Make LogMatchingTracker, SimpleLogMatchingTracker, CombinationLogMatchingTracker, LogTracker, and AtomMatcher naming consistent

Bug: 163421298
Test: `m statsd`
Test: `m statsd_test`
Test: `m`
Test: `atest statsd_test`
Change-Id: I626be9507b64959d3dcb7f260c62229f0f1d0140
diff --git a/cmds/statsd/Android.bp b/cmds/statsd/Android.bp
index 7c41951..88db1d8 100644
--- a/cmds/statsd/Android.bp
+++ b/cmds/statsd/Android.bp
@@ -73,10 +73,10 @@
         "src/HashableDimensionKey.cpp",
         "src/logd/LogEvent.cpp",
         "src/logd/LogEventQueue.cpp",
-        "src/matchers/CombinationLogMatchingTracker.cpp",
+        "src/matchers/CombinationAtomMatchingTracker.cpp",
         "src/matchers/EventMatcherWizard.cpp",
         "src/matchers/matcher_util.cpp",
-        "src/matchers/SimpleLogMatchingTracker.cpp",
+        "src/matchers/SimpleAtomMatchingTracker.cpp",
         "src/metadata_util.cpp",
         "src/metrics/CountMetricProducer.cpp",
         "src/metrics/duration_helper/MaxDurationTracker.cpp",
diff --git a/cmds/statsd/src/condition/CombinationConditionTracker.cpp b/cmds/statsd/src/condition/CombinationConditionTracker.cpp
index e9875ba..7a1ece9 100644
--- a/cmds/statsd/src/condition/CombinationConditionTracker.cpp
+++ b/cmds/statsd/src/condition/CombinationConditionTracker.cpp
@@ -92,8 +92,8 @@
             mUnSlicedChildren.push_back(childIndex);
         }
         mChildren.push_back(childIndex);
-        mTrackerIndex.insert(childTracker->getLogTrackerIndex().begin(),
-                             childTracker->getLogTrackerIndex().end());
+        mTrackerIndex.insert(childTracker->getAtomMatchingTrackerIndex().begin(),
+                             childTracker->getAtomMatchingTrackerIndex().end());
     }
 
     mUnSlicedPartCondition = evaluateCombinationCondition(mUnSlicedChildren, mLogicalOperation,
diff --git a/cmds/statsd/src/condition/ConditionTracker.h b/cmds/statsd/src/condition/ConditionTracker.h
index 62736c8..9da1af4 100644
--- a/cmds/statsd/src/condition/ConditionTracker.h
+++ b/cmds/statsd/src/condition/ConditionTracker.h
@@ -18,7 +18,7 @@
 
 #include "condition/condition_util.h"
 #include "frameworks/base/cmds/statsd/src/statsd_config.pb.h"
-#include "matchers/LogMatchingTracker.h"
+#include "matchers/AtomMatchingTracker.h"
 #include "matchers/matcher_util.h"
 
 #include <utils/RefBase.h>
@@ -60,9 +60,9 @@
 
     // evaluate current condition given the new event.
     // event: the new log event
-    // eventMatcherValues: the results of the LogMatcherTrackers. LogMatcherTrackers always process
-    //                     event before ConditionTrackers, because ConditionTracker depends on
-    //                     LogMatchingTrackers.
+    // eventMatcherValues: the results of the AtomMatchingTrackers. AtomMatchingTrackers always
+    //                     process event before ConditionTrackers, because ConditionTracker depends
+    //                     on AtomMatchingTrackers.
     // mAllConditions: the list of all ConditionTracker
     // conditionCache: the cached non-sliced condition of the ConditionTrackers for this new event.
     // conditionChanged: the bit map to record whether the condition has changed.
@@ -88,8 +88,8 @@
             const bool isPartialLink,
             std::vector<ConditionState>& conditionCache) const = 0;
 
-    // return the list of LogMatchingTracker index that this ConditionTracker uses.
-    virtual const std::set<int>& getLogTrackerIndex() const {
+    // return the list of AtomMatchingTracker index that this ConditionTracker uses.
+    virtual const std::set<int>& getAtomMatchingTrackerIndex() const {
         return mTrackerIndex;
     }
 
@@ -136,7 +136,7 @@
     // if it's properly initialized.
     bool mInitialized;
 
-    // the list of LogMatchingTracker index that this ConditionTracker uses.
+    // the list of AtomMatchingTracker index that this ConditionTracker uses.
     std::set<int> mTrackerIndex;
 
     // This variable is only used for CombinationConditionTrackers.
diff --git a/cmds/statsd/src/matchers/LogMatchingTracker.h b/cmds/statsd/src/matchers/AtomMatchingTracker.h
similarity index 62%
rename from cmds/statsd/src/matchers/LogMatchingTracker.h
rename to cmds/statsd/src/matchers/AtomMatchingTracker.h
index 49a41ad..5194f99 100644
--- a/cmds/statsd/src/matchers/LogMatchingTracker.h
+++ b/cmds/statsd/src/matchers/AtomMatchingTracker.h
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#ifndef LOG_MATCHING_TRACKER_H
-#define LOG_MATCHING_TRACKER_H
+#ifndef ATOM_MATCHING_TRACKER_H
+#define ATOM_MATCHING_TRACKER_H
 
 #include "frameworks/base/cmds/statsd/src/statsd_config.pb.h"
 #include "logd/LogEvent.h"
@@ -31,35 +31,36 @@
 namespace os {
 namespace statsd {
 
-class LogMatchingTracker : public virtual RefBase {
+class AtomMatchingTracker : public virtual RefBase {
 public:
-    LogMatchingTracker(const int64_t& id, const int index, const uint64_t protoHash)
+    AtomMatchingTracker(const int64_t& id, const int index, const uint64_t protoHash)
         : mId(id), mIndex(index), mInitialized(false), mProtoHash(protoHash){};
 
-    virtual ~LogMatchingTracker(){};
+    virtual ~AtomMatchingTracker(){};
 
-    // Initialize this LogMatchingTracker.
-    // allLogMatchers: the list of the AtomMatcher proto config. This is needed because we don't
-    //                 store the proto object in memory. We only need it during initilization.
-    // allTrackers: the list of the LogMatchingTracker objects. It's a one-to-one mapping with
-    //              allLogMatchers. This is needed because the initialization is done recursively
-    //              for CombinationLogMatchingTrackers using DFS.
+    // Initialize this AtomMatchingTracker.
+    // allAtomMatchers: the list of the AtomMatcher proto config. This is needed because we don't
+    //                  store the proto object in memory. We only need it during initilization.
+    // allAtomMatchingTrackers: the list of the AtomMatchingTracker objects. It's a one-to-one
+    //                          mapping with allAtomMatchers. This is needed because the
+    //                          initialization is done recursively for
+    //                          CombinationAtomMatchingTrackers using DFS.
     // stack: a bit map to record which matcher has been visited on the stack. This is for detecting
     //        circle dependency.
-    virtual bool init(const std::vector<AtomMatcher>& allLogMatchers,
-                      const std::vector<sp<LogMatchingTracker>>& allTrackers,
+    virtual bool init(const std::vector<AtomMatcher>& allAtomMatchers,
+                      const std::vector<sp<AtomMatchingTracker>>& allAtomMatchingTrackers,
                       const std::unordered_map<int64_t, int>& matcherMap,
                       std::vector<bool>& stack) = 0;
 
     // Called when a log event comes.
     // event: the log event.
-    // allTrackers: the list of all LogMatchingTrackers. This is needed because the log processing
-    //              is done recursively.
+    // allAtomMatchingTrackers: the list of all AtomMatchingTrackers. This is needed because the log
+    //                          processing is done recursively.
     // matcherResults: The cached results for all matchers for this event. Parent matchers can
     //                 directly access the children's matching results if they have been evaluated.
     //                 Otherwise, call children matchers' onLogEvent.
     virtual void onLogEvent(const LogEvent& event,
-                            const std::vector<sp<LogMatchingTracker>>& allTrackers,
+                            const std::vector<sp<AtomMatchingTracker>>& allAtomMatchingTrackers,
                             std::vector<MatchingState>& matcherResults) = 0;
 
     // Get the tagIds that this matcher cares about. The combined collection is stored
@@ -81,23 +82,23 @@
     // Name of this matching. We don't really need the name, but it makes log message easy to debug.
     const int64_t mId;
 
-    // Index of this LogMatchingTracker in MetricsManager's container.
+    // Index of this AtomMatchingTracker in MetricsManager's container.
     const int mIndex;
 
-    // Whether this LogMatchingTracker has been properly initialized.
+    // Whether this AtomMatchingTracker has been properly initialized.
     bool mInitialized;
 
-    // The collection of the event tag ids that this LogMatchingTracker cares. So we can quickly
+    // The collection of the event tag ids that this AtomMatchingTracker cares. So we can quickly
     // return kNotMatched when we receive an event with an id not in the list. This is especially
-    // useful when we have a complex CombinationLogMatcherTracker.
+    // useful when we have a complex CombinationAtomMatchingTracker.
     std::set<int> mAtomIds;
 
     // Hash of the AtomMatcher's proto bytes from StatsdConfig.
     // Used to determine if the definition of this matcher has changed across a config update.
     const uint64_t mProtoHash;
 
-    FRIEND_TEST(MetricsManagerTest, TestCreateLogTrackerSimple);
-    FRIEND_TEST(MetricsManagerTest, TestCreateLogTrackerCombination);
+    FRIEND_TEST(MetricsManagerTest, TestCreateAtomMatchingTrackerSimple);
+    FRIEND_TEST(MetricsManagerTest, TestCreateAtomMatchingTrackerCombination);
     FRIEND_TEST(ConfigUpdateTest, TestUpdateMatchers);
 };
 
@@ -105,4 +106,4 @@
 }  // namespace os
 }  // namespace android
 
-#endif  // LOG_MATCHING_TRACKER_H
+#endif  // ATOM_MATCHING_TRACKER_H
diff --git a/cmds/statsd/src/matchers/CombinationLogMatchingTracker.cpp b/cmds/statsd/src/matchers/CombinationAtomMatchingTracker.cpp
similarity index 67%
rename from cmds/statsd/src/matchers/CombinationLogMatchingTracker.cpp
rename to cmds/statsd/src/matchers/CombinationAtomMatchingTracker.cpp
index 60bcc26..19637a4 100644
--- a/cmds/statsd/src/matchers/CombinationLogMatchingTracker.cpp
+++ b/cmds/statsd/src/matchers/CombinationAtomMatchingTracker.cpp
@@ -16,7 +16,8 @@
 
 #include "Log.h"
 
-#include "CombinationLogMatchingTracker.h"
+#include "CombinationAtomMatchingTracker.h"
+
 #include "matchers/matcher_util.h"
 
 namespace android {
@@ -27,18 +28,18 @@
 using std::unordered_map;
 using std::vector;
 
-CombinationLogMatchingTracker::CombinationLogMatchingTracker(const int64_t& id, const int index,
-                                                             const uint64_t protoHash)
-    : LogMatchingTracker(id, index, protoHash) {
+CombinationAtomMatchingTracker::CombinationAtomMatchingTracker(const int64_t& id, const int index,
+                                                               const uint64_t protoHash)
+    : AtomMatchingTracker(id, index, protoHash) {
 }
 
-CombinationLogMatchingTracker::~CombinationLogMatchingTracker() {
+CombinationAtomMatchingTracker::~CombinationAtomMatchingTracker() {
 }
 
-bool CombinationLogMatchingTracker::init(const vector<AtomMatcher>& allLogMatchers,
-                                         const vector<sp<LogMatchingTracker>>& allTrackers,
-                                         const unordered_map<int64_t, int>& matcherMap,
-                                         vector<bool>& stack) {
+bool CombinationAtomMatchingTracker::init(
+        const vector<AtomMatcher>& allAtomMatchers,
+        const vector<sp<AtomMatchingTracker>>& allAtomMatchingTrackers,
+        const unordered_map<int64_t, int>& matcherMap, vector<bool>& stack) {
     if (mInitialized) {
         return true;
     }
@@ -46,7 +47,7 @@
     // mark this node as visited in the recursion stack.
     stack[mIndex] = true;
 
-    AtomMatcher_Combination matcher = allLogMatchers[mIndex].combination();
+    AtomMatcher_Combination matcher = allAtomMatchers[mIndex].combination();
 
     // LogicalOperation is missing in the config
     if (!matcher.has_operation()) {
@@ -74,14 +75,15 @@
             return false;
         }
 
-        if (!allTrackers[childIndex]->init(allLogMatchers, allTrackers, matcherMap, stack)) {
+        if (!allAtomMatchingTrackers[childIndex]->init(allAtomMatchers, allAtomMatchingTrackers,
+                                                       matcherMap, stack)) {
             ALOGW("child matcher init failed %lld", (long long)child);
             return false;
         }
 
         mChildren.push_back(childIndex);
 
-        const set<int>& childTagIds = allTrackers[childIndex]->getAtomIds();
+        const set<int>& childTagIds = allAtomMatchingTrackers[childIndex]->getAtomIds();
         mAtomIds.insert(childTagIds.begin(), childTagIds.end());
     }
 
@@ -91,9 +93,9 @@
     return true;
 }
 
-void CombinationLogMatchingTracker::onLogEvent(const LogEvent& event,
-                                               const vector<sp<LogMatchingTracker>>& allTrackers,
-                                               vector<MatchingState>& matcherResults) {
+void CombinationAtomMatchingTracker::onLogEvent(
+        const LogEvent& event, const vector<sp<AtomMatchingTracker>>& allAtomMatchingTrackers,
+        vector<MatchingState>& matcherResults) {
     // this event has been processed.
     if (matcherResults[mIndex] != MatchingState::kNotComputed) {
         return;
@@ -107,8 +109,8 @@
     // evaluate children matchers if they haven't been evaluated.
     for (const int childIndex : mChildren) {
         if (matcherResults[childIndex] == MatchingState::kNotComputed) {
-            const sp<LogMatchingTracker>& child = allTrackers[childIndex];
-            child->onLogEvent(event, allTrackers, matcherResults);
+            const sp<AtomMatchingTracker>& child = allAtomMatchingTrackers[childIndex];
+            child->onLogEvent(event, allAtomMatchingTrackers, matcherResults);
         }
     }
 
diff --git a/cmds/statsd/src/matchers/CombinationLogMatchingTracker.h b/cmds/statsd/src/matchers/CombinationAtomMatchingTracker.h
similarity index 64%
rename from cmds/statsd/src/matchers/CombinationLogMatchingTracker.h
rename to cmds/statsd/src/matchers/CombinationAtomMatchingTracker.h
index 6b8a7fb..06a4932 100644
--- a/cmds/statsd/src/matchers/CombinationLogMatchingTracker.h
+++ b/cmds/statsd/src/matchers/CombinationAtomMatchingTracker.h
@@ -13,12 +13,13 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-#ifndef COMBINATION_LOG_MATCHING_TRACKER_H
-#define COMBINATION_LOG_MATCHING_TRACKER_H
+#ifndef COMBINATION_ATOM_MATCHING_TRACKER_H
+#define COMBINATION_ATOM_MATCHING_TRACKER_H
 
 #include <unordered_map>
 #include <vector>
-#include "LogMatchingTracker.h"
+
+#include "AtomMatchingTracker.h"
 #include "frameworks/base/cmds/statsd/src/statsd_config.pb.h"
 
 namespace android {
@@ -26,19 +27,18 @@
 namespace statsd {
 
 // Represents a AtomMatcher_Combination in the StatsdConfig.
-class CombinationLogMatchingTracker : public virtual LogMatchingTracker {
+class CombinationAtomMatchingTracker : public virtual AtomMatchingTracker {
 public:
-    CombinationLogMatchingTracker(const int64_t& id, const int index, const uint64_t protoHash);
+    CombinationAtomMatchingTracker(const int64_t& id, const int index, const uint64_t protoHash);
 
-    bool init(const std::vector<AtomMatcher>& allLogMatchers,
-              const std::vector<sp<LogMatchingTracker>>& allTrackers,
-              const std::unordered_map<int64_t, int>& matcherMap,
-              std::vector<bool>& stack);
+    bool init(const std::vector<AtomMatcher>& allAtomMatchers,
+              const std::vector<sp<AtomMatchingTracker>>& allAtomMatchingTrackers,
+              const std::unordered_map<int64_t, int>& matcherMap, std::vector<bool>& stack);
 
-    ~CombinationLogMatchingTracker();
+    ~CombinationAtomMatchingTracker();
 
     void onLogEvent(const LogEvent& event,
-                    const std::vector<sp<LogMatchingTracker>>& allTrackers,
+                    const std::vector<sp<AtomMatchingTracker>>& allAtomMatchingTrackers,
                     std::vector<MatchingState>& matcherResults) override;
 
 private:
@@ -50,4 +50,4 @@
 }  // namespace statsd
 }  // namespace os
 }  // namespace android
-#endif  // COMBINATION_LOG_MATCHING_TRACKER_H
+#endif  // COMBINATION_ATOM_MATCHING_TRACKER_H
diff --git a/cmds/statsd/src/matchers/EventMatcherWizard.h b/cmds/statsd/src/matchers/EventMatcherWizard.h
index 57ec2b3..5d780f2 100644
--- a/cmds/statsd/src/matchers/EventMatcherWizard.h
+++ b/cmds/statsd/src/matchers/EventMatcherWizard.h
@@ -16,7 +16,7 @@
 
 #pragma once
 
-#include "LogMatchingTracker.h"
+#include "AtomMatchingTracker.h"
 
 namespace android {
 namespace os {
@@ -25,7 +25,7 @@
 class EventMatcherWizard : public virtual android::RefBase {
 public:
     EventMatcherWizard(){};  // for testing
-    EventMatcherWizard(const std::vector<sp<LogMatchingTracker>>& eventTrackers)
+    EventMatcherWizard(const std::vector<sp<AtomMatchingTracker>>& eventTrackers)
         : mAllEventMatchers(eventTrackers){};
 
     virtual ~EventMatcherWizard(){};
@@ -33,7 +33,7 @@
     MatchingState matchLogEvent(const LogEvent& event, int matcher_index);
 
 private:
-    std::vector<sp<LogMatchingTracker>> mAllEventMatchers;
+    std::vector<sp<AtomMatchingTracker>> mAllEventMatchers;
 };
 
 }  // namespace statsd
diff --git a/cmds/statsd/src/matchers/SimpleLogMatchingTracker.cpp b/cmds/statsd/src/matchers/SimpleAtomMatchingTracker.cpp
similarity index 60%
rename from cmds/statsd/src/matchers/SimpleLogMatchingTracker.cpp
rename to cmds/statsd/src/matchers/SimpleAtomMatchingTracker.cpp
index ff47d35..744ec37 100644
--- a/cmds/statsd/src/matchers/SimpleLogMatchingTracker.cpp
+++ b/cmds/statsd/src/matchers/SimpleAtomMatchingTracker.cpp
@@ -17,7 +17,7 @@
 #define DEBUG false  // STOPSHIP if true
 #include "Log.h"
 
-#include "SimpleLogMatchingTracker.h"
+#include "SimpleAtomMatchingTracker.h"
 
 namespace android {
 namespace os {
@@ -26,11 +26,11 @@
 using std::unordered_map;
 using std::vector;
 
-SimpleLogMatchingTracker::SimpleLogMatchingTracker(const int64_t& id, const int index,
-                                                   const uint64_t protoHash,
-                                                   const SimpleAtomMatcher& matcher,
-                                                   const sp<UidMap>& uidMap)
-    : LogMatchingTracker(id, index, protoHash), mMatcher(matcher), mUidMap(uidMap) {
+SimpleAtomMatchingTracker::SimpleAtomMatchingTracker(const int64_t& id, const int index,
+                                                     const uint64_t protoHash,
+                                                     const SimpleAtomMatcher& matcher,
+                                                     const sp<UidMap>& uidMap)
+    : AtomMatchingTracker(id, index, protoHash), mMatcher(matcher), mUidMap(uidMap) {
     if (!matcher.has_atom_id()) {
         mInitialized = false;
     } else {
@@ -39,20 +39,20 @@
     }
 }
 
-SimpleLogMatchingTracker::~SimpleLogMatchingTracker() {
+SimpleAtomMatchingTracker::~SimpleAtomMatchingTracker() {
 }
 
-bool SimpleLogMatchingTracker::init(const vector<AtomMatcher>& allLogMatchers,
-                                    const vector<sp<LogMatchingTracker>>& allTrackers,
-                                    const unordered_map<int64_t, int>& matcherMap,
-                                    vector<bool>& stack) {
+bool SimpleAtomMatchingTracker::init(const vector<AtomMatcher>& allAtomMatchers,
+                                     const vector<sp<AtomMatchingTracker>>& allAtomMatchingTrackers,
+                                     const unordered_map<int64_t, int>& matcherMap,
+                                     vector<bool>& stack) {
     // no need to do anything.
     return mInitialized;
 }
 
-void SimpleLogMatchingTracker::onLogEvent(const LogEvent& event,
-                                          const vector<sp<LogMatchingTracker>>& allTrackers,
-                                          vector<MatchingState>& matcherResults) {
+void SimpleAtomMatchingTracker::onLogEvent(
+        const LogEvent& event, const vector<sp<AtomMatchingTracker>>& allAtomMatchingTrackers,
+        vector<MatchingState>& matcherResults) {
     if (matcherResults[mIndex] != MatchingState::kNotComputed) {
         VLOG("Matcher %lld already evaluated ", (long long)mId);
         return;
diff --git a/cmds/statsd/src/matchers/SimpleLogMatchingTracker.h b/cmds/statsd/src/matchers/SimpleAtomMatchingTracker.h
similarity index 64%
rename from cmds/statsd/src/matchers/SimpleLogMatchingTracker.h
rename to cmds/statsd/src/matchers/SimpleAtomMatchingTracker.h
index e58e012..49cbe09 100644
--- a/cmds/statsd/src/matchers/SimpleLogMatchingTracker.h
+++ b/cmds/statsd/src/matchers/SimpleAtomMatchingTracker.h
@@ -14,12 +14,13 @@
  * limitations under the License.
  */
 
-#ifndef SIMPLE_LOG_MATCHING_TRACKER_H
-#define SIMPLE_LOG_MATCHING_TRACKER_H
+#ifndef SIMPLE_ATOM_MATCHING_TRACKER_H
+#define SIMPLE_ATOM_MATCHING_TRACKER_H
 
 #include <unordered_map>
 #include <vector>
-#include "LogMatchingTracker.h"
+
+#include "AtomMatchingTracker.h"
 #include "frameworks/base/cmds/statsd/src/statsd_config.pb.h"
 #include "packages/UidMap.h"
 
@@ -27,20 +28,20 @@
 namespace os {
 namespace statsd {
 
-class SimpleLogMatchingTracker : public virtual LogMatchingTracker {
+class SimpleAtomMatchingTracker : public virtual AtomMatchingTracker {
 public:
-    SimpleLogMatchingTracker(const int64_t& id, const int index, const uint64_t protoHash,
-                             const SimpleAtomMatcher& matcher, const sp<UidMap>& uidMap);
+    SimpleAtomMatchingTracker(const int64_t& id, const int index, const uint64_t protoHash,
+                              const SimpleAtomMatcher& matcher, const sp<UidMap>& uidMap);
 
-    ~SimpleLogMatchingTracker();
+    ~SimpleAtomMatchingTracker();
 
-    bool init(const std::vector<AtomMatcher>& allLogMatchers,
-              const std::vector<sp<LogMatchingTracker>>& allTrackers,
+    bool init(const std::vector<AtomMatcher>& allAtomMatchers,
+              const std::vector<sp<AtomMatchingTracker>>& allAtomMatchingTrackers,
               const std::unordered_map<int64_t, int>& matcherMap,
               std::vector<bool>& stack) override;
 
     void onLogEvent(const LogEvent& event,
-                    const std::vector<sp<LogMatchingTracker>>& allTrackers,
+                    const std::vector<sp<AtomMatchingTracker>>& allAtomMatchingTrackers,
                     std::vector<MatchingState>& matcherResults) override;
 
 private:
@@ -51,4 +52,4 @@
 }  // namespace statsd
 }  // namespace os
 }  // namespace android
-#endif  // SIMPLE_LOG_MATCHING_TRACKER_H
+#endif  // SIMPLE_ATOM_MATCHING_TRACKER_H
diff --git a/cmds/statsd/src/matchers/matcher_util.cpp b/cmds/statsd/src/matchers/matcher_util.cpp
index e6d9122..a7454c5 100644
--- a/cmds/statsd/src/matchers/matcher_util.cpp
+++ b/cmds/statsd/src/matchers/matcher_util.cpp
@@ -17,7 +17,7 @@
 #include "Log.h"
 
 #include "frameworks/base/cmds/statsd/src/statsd_config.pb.h"
-#include "matchers/LogMatchingTracker.h"
+#include "matchers/AtomMatchingTracker.h"
 #include "matchers/matcher_util.h"
 #include "stats_util.h"
 
diff --git a/cmds/statsd/src/metrics/MetricsManager.cpp b/cmds/statsd/src/metrics/MetricsManager.cpp
index 2c3deca..7cfe4bc 100644
--- a/cmds/statsd/src/metrics/MetricsManager.cpp
+++ b/cmds/statsd/src/metrics/MetricsManager.cpp
@@ -24,8 +24,8 @@
 #include "condition/CombinationConditionTracker.h"
 #include "condition/SimpleConditionTracker.h"
 #include "guardrail/StatsdStats.h"
-#include "matchers/CombinationLogMatchingTracker.h"
-#include "matchers/SimpleLogMatchingTracker.h"
+#include "matchers/CombinationAtomMatchingTracker.h"
+#include "matchers/SimpleAtomMatchingTracker.h"
 #include "parsing_utils/config_update_utils.h"
 #include "parsing_utils/metrics_manager_util.h"
 #include "state/StateManager.h"
@@ -77,14 +77,14 @@
     // Init the ttl end timestamp.
     refreshTtl(timeBaseNs);
 
-    mConfigValid =
-            initStatsdConfig(key, config, uidMap, pullerManager, anomalyAlarmMonitor,
-                             periodicAlarmMonitor, timeBaseNs, currentTimeNs, mTagIds,
-                             mAllAtomMatchers, mLogTrackerMap, mAllConditionTrackers,
-                             mAllMetricProducers, mAllAnomalyTrackers, mAllPeriodicAlarmTrackers,
-                             mConditionToMetricMap, mTrackerToMetricMap, mTrackerToConditionMap,
-                             mActivationAtomTrackerToMetricMap, mDeactivationAtomTrackerToMetricMap,
-                             mAlertTrackerMap, mMetricIndexesWithActivation, mNoReportMetricIds);
+    mConfigValid = initStatsdConfig(
+            key, config, uidMap, pullerManager, anomalyAlarmMonitor, periodicAlarmMonitor,
+            timeBaseNs, currentTimeNs, mTagIds, mAllAtomMatchingTrackers, mAtomMatchingTrackerMap,
+            mAllConditionTrackers, mAllMetricProducers, mAllAnomalyTrackers,
+            mAllPeriodicAlarmTrackers, mConditionToMetricMap, mTrackerToMetricMap,
+            mTrackerToConditionMap, mActivationAtomTrackerToMetricMap,
+            mDeactivationAtomTrackerToMetricMap, mAlertTrackerMap, mMetricIndexesWithActivation,
+            mNoReportMetricIds);
 
     mHashStringsInReport = config.hash_strings_in_metric_report();
     mVersionStringsInReport = config.version_strings_in_metric_report();
@@ -155,7 +155,7 @@
     // Guardrail. Reject the config if it's too big.
     if (mAllMetricProducers.size() > StatsdStats::kMaxMetricCountPerConfig ||
         mAllConditionTrackers.size() > StatsdStats::kMaxConditionCountPerConfig ||
-        mAllAtomMatchers.size() > StatsdStats::kMaxMatcherCountPerConfig) {
+        mAllAtomMatchingTrackers.size() > StatsdStats::kMaxMatcherCountPerConfig) {
         ALOGE("This config is too big! Reject!");
         mConfigValid = false;
     }
@@ -175,8 +175,9 @@
 
     // no matter whether this config is valid, log it in the stats.
     StatsdStats::getInstance().noteConfigReceived(
-            key, mAllMetricProducers.size(), mAllConditionTrackers.size(), mAllAtomMatchers.size(),
-            mAllAnomalyTrackers.size(), mAnnotations, mConfigValid);
+            key, mAllMetricProducers.size(), mAllConditionTrackers.size(),
+            mAllAtomMatchingTrackers.size(), mAllAnomalyTrackers.size(), mAnnotations,
+            mConfigValid);
     // Check active
     for (const auto& metric : mAllMetricProducers) {
         if (metric->isActive()) {
@@ -201,15 +202,15 @@
                                   const int64_t currentTimeNs,
                                   const sp<AlarmMonitor>& anomalyAlarmMonitor,
                                   const sp<AlarmMonitor>& periodicAlarmMonitor) {
-    vector<sp<LogMatchingTracker>> newAtomMatchers;
-    unordered_map<int64_t, int> newLogTrackerMap;
+    vector<sp<AtomMatchingTracker>> newAtomMatchingTrackers;
+    unordered_map<int64_t, int> newAtomMatchingTrackerMap;
     mTagIds.clear();
-    mConfigValid =
-            updateStatsdConfig(mConfigKey, config, mUidMap, mPullerManager, anomalyAlarmMonitor,
-                               periodicAlarmMonitor, timeBaseNs, currentTimeNs, mAllAtomMatchers,
-                               mLogTrackerMap, mTagIds, newAtomMatchers, newLogTrackerMap);
-    mAllAtomMatchers = newAtomMatchers;
-    mLogTrackerMap = newLogTrackerMap;
+    mConfigValid = updateStatsdConfig(
+            mConfigKey, config, mUidMap, mPullerManager, anomalyAlarmMonitor, periodicAlarmMonitor,
+            timeBaseNs, currentTimeNs, mAllAtomMatchingTrackers, mAtomMatchingTrackerMap, mTagIds,
+            newAtomMatchingTrackers, newAtomMatchingTrackerMap);
+    mAllAtomMatchingTrackers = newAtomMatchingTrackers;
+    mAtomMatchingTrackerMap = newAtomMatchingTrackerMap;
     return mConfigValid;
 }
 
@@ -502,11 +503,12 @@
         return;
     }
 
-    vector<MatchingState> matcherCache(mAllAtomMatchers.size(), MatchingState::kNotComputed);
+    vector<MatchingState> matcherCache(mAllAtomMatchingTrackers.size(),
+                                       MatchingState::kNotComputed);
 
     // Evaluate all atom matchers.
-    for (auto& matcher : mAllAtomMatchers) {
-        matcher->onLogEvent(event, mAllAtomMatchers, matcherCache);
+    for (auto& matcher : mAllAtomMatchingTrackers) {
+        matcher->onLogEvent(event, mAllAtomMatchingTrackers, matcherCache);
     }
 
     // Set of metrics that received an activation cancellation.
@@ -596,10 +598,10 @@
     }
 
     // For matched AtomMatchers, tell relevant metrics that a matched event has come.
-    for (size_t i = 0; i < mAllAtomMatchers.size(); i++) {
+    for (size_t i = 0; i < mAllAtomMatchingTrackers.size(); i++) {
         if (matcherCache[i] == MatchingState::kMatched) {
             StatsdStats::getInstance().noteMatcherMatched(mConfigKey,
-                                                          mAllAtomMatchers[i]->getId());
+                                                          mAllAtomMatchingTrackers[i]->getId());
             auto pair = mTrackerToMetricMap.find(i);
             if (pair != mTrackerToMetricMap.end()) {
                 auto& metricList = pair->second;
diff --git a/cmds/statsd/src/metrics/MetricsManager.h b/cmds/statsd/src/metrics/MetricsManager.h
index 6f9a2336..6f4b2d7 100644
--- a/cmds/statsd/src/metrics/MetricsManager.h
+++ b/cmds/statsd/src/metrics/MetricsManager.h
@@ -25,7 +25,7 @@
 #include "frameworks/base/cmds/statsd/src/statsd_config.pb.h"
 #include "frameworks/base/cmds/statsd/src/statsd_metadata.pb.h"
 #include "logd/LogEvent.h"
-#include "matchers/LogMatchingTracker.h"
+#include "matchers/AtomMatchingTracker.h"
 #include "metrics/MetricProducer.h"
 #include "packages/UidMap.h"
 
@@ -217,7 +217,7 @@
     // All event tags that are interesting to my metrics.
     std::set<int> mTagIds;
 
-    // We only store the sp of LogMatchingTracker, MetricProducer, and ConditionTracker in
+    // We only store the sp of AtomMatchingTracker, MetricProducer, and ConditionTracker in
     // MetricsManager. There are relationships between them, and the relationships are denoted by
     // index instead of pointers. The reasons for this are: (1) the relationship between them are
     // complicated, so storing index instead of pointers reduces the risk that A holds B's sp, and B
@@ -225,7 +225,7 @@
     // the related results from a cache using the index.
 
     // Hold all the atom matchers from the config.
-    std::vector<sp<LogMatchingTracker>> mAllAtomMatchers;
+    std::vector<sp<AtomMatchingTracker>> mAllAtomMatchingTrackers;
 
     // Hold all the conditions from the config.
     std::vector<sp<ConditionTracker>> mAllConditionTrackers;
@@ -239,29 +239,29 @@
     // Hold all periodic alarm trackers.
     std::vector<sp<AlarmTracker>> mAllPeriodicAlarmTrackers;
 
-    // To make updating configs faster, we map the id of a LogMatchingTracker, MetricProducer, and
+    // To make updating configs faster, we map the id of a AtomMatchingTracker, MetricProducer, and
     // ConditionTracker to its index in the corresponding vector.
 
-    // Maps the id of an atom matcher to its index in mAllAtomMatchers.
-    std::unordered_map<int64_t, int> mLogTrackerMap;
+    // Maps the id of an atom matcher to its index in mAllAtomMatchingTrackers.
+    std::unordered_map<int64_t, int> mAtomMatchingTrackerMap;
 
     // To make the log processing more efficient, we want to do as much filtering as possible
     // before we go into individual trackers and conditions to match.
 
     // 1st filter: check if the event tag id is in mTagIds.
     // 2nd filter: if it is, we parse the event because there is at least one member is interested.
-    //             then pass to all LogMatchingTrackers (itself also filter events by ids).
-    // 3nd filter: for LogMatchingTrackers that matched this event, we pass this event to the
+    //             then pass to all AtomMatchingTrackers (itself also filter events by ids).
+    // 3nd filter: for AtomMatchingTrackers that matched this event, we pass this event to the
     //             ConditionTrackers and MetricProducers that use this matcher.
     // 4th filter: for ConditionTrackers that changed value due to this event, we pass
     //             new conditions to  metrics that use this condition.
 
     // The following map is initialized from the statsd_config.
 
-    // Maps from the index of the LogMatchingTracker to index of MetricProducer.
+    // Maps from the index of the AtomMatchingTracker to index of MetricProducer.
     std::unordered_map<int, std::vector<int>> mTrackerToMetricMap;
 
-    // Maps from LogMatchingTracker to ConditionTracker
+    // Maps from AtomMatchingTracker to ConditionTracker
     std::unordered_map<int, std::vector<int>> mTrackerToConditionMap;
 
     // Maps from ConditionTracker to MetricProducer
diff --git a/cmds/statsd/src/metrics/parsing_utils/config_update_utils.cpp b/cmds/statsd/src/metrics/parsing_utils/config_update_utils.cpp
index 562e291..a9ae5a4 100644
--- a/cmds/statsd/src/metrics/parsing_utils/config_update_utils.cpp
+++ b/cmds/statsd/src/metrics/parsing_utils/config_update_utils.cpp
@@ -29,9 +29,9 @@
 // Recursive function to determine if a matcher needs to be updated. Populates matcherToUpdate.
 // Returns whether the function was successful or not.
 bool determineMatcherUpdateStatus(const StatsdConfig& config, const int matcherIdx,
-                                  const unordered_map<int64_t, int>& oldLogTrackerMap,
-                                  const vector<sp<LogMatchingTracker>>& oldAtomMatchers,
-                                  const unordered_map<int64_t, int>& newLogTrackerMap,
+                                  const unordered_map<int64_t, int>& oldAtomMatchingTrackerMap,
+                                  const vector<sp<AtomMatchingTracker>>& oldAtomMatchingTrackers,
+                                  const unordered_map<int64_t, int>& newAtomMatchingTrackerMap,
                                   vector<UpdateStatus>& matchersToUpdate,
                                   vector<bool>& cycleTracker) {
     // Have already examined this matcher.
@@ -42,8 +42,8 @@
     const AtomMatcher& matcher = config.atom_matcher(matcherIdx);
     int64_t id = matcher.id();
     // Check if new matcher.
-    const auto& oldLogTrackerIt = oldLogTrackerMap.find(id);
-    if (oldLogTrackerIt == oldLogTrackerMap.end()) {
+    const auto& oldAtomMatchingTrackerIt = oldAtomMatchingTrackerMap.find(id);
+    if (oldAtomMatchingTrackerIt == oldAtomMatchingTrackerMap.end()) {
         matchersToUpdate[matcherIdx] = UPDATE_REPLACE;
         return true;
     }
@@ -55,7 +55,7 @@
         return false;
     }
     uint64_t newProtoHash = Hash64(serializedMatcher);
-    if (newProtoHash != oldAtomMatchers[oldLogTrackerIt->second]->getProtoHash()) {
+    if (newProtoHash != oldAtomMatchingTrackers[oldAtomMatchingTrackerIt->second]->getProtoHash()) {
         matchersToUpdate[matcherIdx] = UPDATE_REPLACE;
         return true;
     }
@@ -70,8 +70,8 @@
             cycleTracker[matcherIdx] = true;
             UpdateStatus status = UPDATE_PRESERVE;
             for (const int64_t childMatcherId : matcher.combination().matcher()) {
-                const auto& childIt = newLogTrackerMap.find(childMatcherId);
-                if (childIt == newLogTrackerMap.end()) {
+                const auto& childIt = newAtomMatchingTrackerMap.find(childMatcherId);
+                if (childIt == newAtomMatchingTrackerMap.end()) {
                     ALOGW("Matcher %lld not found in the config", (long long)childMatcherId);
                     return false;
                 }
@@ -80,9 +80,9 @@
                     ALOGE("Cycle detected in matcher config");
                     return false;
                 }
-                if (!determineMatcherUpdateStatus(config, childIdx, oldLogTrackerMap,
-                                                  oldAtomMatchers, newLogTrackerMap,
-                                                  matchersToUpdate, cycleTracker)) {
+                if (!determineMatcherUpdateStatus(
+                            config, childIdx, oldAtomMatchingTrackerMap, oldAtomMatchingTrackers,
+                            newAtomMatchingTrackerMap, matchersToUpdate, cycleTracker)) {
                     return false;
                 }
 
@@ -103,25 +103,25 @@
     return true;
 }
 
-bool updateLogTrackers(const StatsdConfig& config, const sp<UidMap>& uidMap,
-                       const unordered_map<int64_t, int>& oldLogTrackerMap,
-                       const vector<sp<LogMatchingTracker>>& oldAtomMatchers, set<int>& allTagIds,
-                       unordered_map<int64_t, int>& newLogTrackerMap,
-                       vector<sp<LogMatchingTracker>>& newAtomMatchers) {
+bool updateAtomTrackers(const StatsdConfig& config, const sp<UidMap>& uidMap,
+                        const unordered_map<int64_t, int>& oldAtomMatchingTrackerMap,
+                        const vector<sp<AtomMatchingTracker>>& oldAtomMatchingTrackers,
+                        set<int>& allTagIds, unordered_map<int64_t, int>& newAtomMatchingTrackerMap,
+                        vector<sp<AtomMatchingTracker>>& newAtomMatchingTrackers) {
     const int atomMatcherCount = config.atom_matcher_size();
 
     vector<AtomMatcher> matcherProtos;
     matcherProtos.reserve(atomMatcherCount);
-    newAtomMatchers.reserve(atomMatcherCount);
+    newAtomMatchingTrackers.reserve(atomMatcherCount);
 
     // Maps matcher id to their position in the config. For fast lookup of dependencies.
     for (int i = 0; i < atomMatcherCount; i++) {
         const AtomMatcher& matcher = config.atom_matcher(i);
-        if (newLogTrackerMap.find(matcher.id()) != newLogTrackerMap.end()) {
+        if (newAtomMatchingTrackerMap.find(matcher.id()) != newAtomMatchingTrackerMap.end()) {
             ALOGE("Duplicate atom matcher found for id %lld", (long long)matcher.id());
             return false;
         }
-        newLogTrackerMap[matcher.id()] = i;
+        newAtomMatchingTrackerMap[matcher.id()] = i;
         matcherProtos.push_back(matcher);
     }
 
@@ -129,8 +129,9 @@
     vector<UpdateStatus> matchersToUpdate(atomMatcherCount, UPDATE_UNKNOWN);
     vector<bool> cycleTracker(atomMatcherCount, false);
     for (int i = 0; i < atomMatcherCount; i++) {
-        if (!determineMatcherUpdateStatus(config, i, oldLogTrackerMap, oldAtomMatchers,
-                                          newLogTrackerMap, matchersToUpdate, cycleTracker)) {
+        if (!determineMatcherUpdateStatus(config, i, oldAtomMatchingTrackerMap,
+                                          oldAtomMatchingTrackers, newAtomMatchingTrackerMap,
+                                          matchersToUpdate, cycleTracker)) {
             return false;
         }
     }
@@ -140,23 +141,23 @@
         const int64_t id = matcher.id();
         switch (matchersToUpdate[i]) {
             case UPDATE_PRESERVE: {
-                const auto& oldLogTrackerIt = oldLogTrackerMap.find(id);
-                if (oldLogTrackerIt == oldLogTrackerMap.end()) {
+                const auto& oldAtomMatchingTrackerIt = oldAtomMatchingTrackerMap.find(id);
+                if (oldAtomMatchingTrackerIt == oldAtomMatchingTrackerMap.end()) {
                     ALOGE("Could not find AtomMatcher %lld in the previous config, but expected it "
                           "to be there",
                           (long long)id);
                     return false;
                 }
-                const int oldIndex = oldLogTrackerIt->second;
-                newAtomMatchers.push_back(oldAtomMatchers[oldIndex]);
+                const int oldIndex = oldAtomMatchingTrackerIt->second;
+                newAtomMatchingTrackers.push_back(oldAtomMatchingTrackers[oldIndex]);
                 break;
             }
             case UPDATE_REPLACE: {
-                sp<LogMatchingTracker> tracker = createLogTracker(matcher, i, uidMap);
+                sp<AtomMatchingTracker> tracker = createAtomMatchingTracker(matcher, i, uidMap);
                 if (tracker == nullptr) {
                     return false;
                 }
-                newAtomMatchers.push_back(tracker);
+                newAtomMatchingTrackers.push_back(tracker);
                 break;
             }
             default: {
@@ -168,8 +169,9 @@
     }
 
     std::fill(cycleTracker.begin(), cycleTracker.end(), false);
-    for (auto& matcher : newAtomMatchers) {
-        if (!matcher->init(matcherProtos, newAtomMatchers, newLogTrackerMap, cycleTracker)) {
+    for (auto& matcher : newAtomMatchingTrackers) {
+        if (!matcher->init(matcherProtos, newAtomMatchingTrackers, newAtomMatchingTrackerMap,
+                           cycleTracker)) {
             return false;
         }
         // Collect all the tag ids that are interesting. TagIds exist in leaf nodes only.
@@ -185,13 +187,14 @@
                         const sp<AlarmMonitor>& anomalyAlarmMonitor,
                         const sp<AlarmMonitor>& periodicAlarmMonitor, const int64_t timeBaseNs,
                         const int64_t currentTimeNs,
-                        const vector<sp<LogMatchingTracker>>& oldAtomMatchers,
-                        const unordered_map<int64_t, int>& oldLogTrackerMap, set<int>& allTagIds,
-                        vector<sp<LogMatchingTracker>>& newAtomMatchers,
-                        unordered_map<int64_t, int>& newLogTrackerMap) {
-    if (!updateLogTrackers(config, uidMap, oldLogTrackerMap, oldAtomMatchers, allTagIds,
-                           newLogTrackerMap, newAtomMatchers)) {
-        ALOGE("updateLogMatchingTrackers failed");
+                        const vector<sp<AtomMatchingTracker>>& oldAtomMatchingTrackers,
+                        const unordered_map<int64_t, int>& oldAtomMatchingTrackerMap,
+                        set<int>& allTagIds,
+                        vector<sp<AtomMatchingTracker>>& newAtomMatchingTrackers,
+                        unordered_map<int64_t, int>& newAtomMatchingTrackerMap) {
+    if (!updateAtomTrackers(config, uidMap, oldAtomMatchingTrackerMap, oldAtomMatchingTrackers,
+                            allTagIds, newAtomMatchingTrackerMap, newAtomMatchingTrackers)) {
+        ALOGE("updateAtomMatchingTrackers failed");
         return false;
     }
 
@@ -200,4 +203,4 @@
 
 }  // namespace statsd
 }  // namespace os
-}  // namespace android
\ No newline at end of file
+}  // namespace android
diff --git a/cmds/statsd/src/metrics/parsing_utils/config_update_utils.h b/cmds/statsd/src/metrics/parsing_utils/config_update_utils.h
index 951ab03..ae7b216 100644
--- a/cmds/statsd/src/metrics/parsing_utils/config_update_utils.h
+++ b/cmds/statsd/src/metrics/parsing_utils/config_update_utils.h
@@ -20,7 +20,7 @@
 
 #include "anomaly/AlarmMonitor.h"
 #include "external/StatsPullerManager.h"
-#include "matchers/LogMatchingTracker.h"
+#include "matchers/AtomMatchingTracker.h"
 
 namespace android {
 namespace os {
@@ -42,34 +42,34 @@
 // input:
 // [config]: the input StatsdConfig
 // [matcherIdx]: the index of the current matcher to be updated
-// [newLogTrackerMap]: matcher id to index mapping in the input StatsdConfig
-// [oldLogTrackerMap]: matcher id to index mapping in the existing MetricsManager
-// [oldAtomMatchers]: stores the existing LogMatchingTrackers
+// [newAtomMatchingTrackerMap]: matcher id to index mapping in the input StatsdConfig
+// [oldAtomMatchingTrackerMap]: matcher id to index mapping in the existing MetricsManager
+// [oldAtomMatchingTrackers]: stores the existing AtomMatchingTrackers
 // output:
 // [matchersToUpdate]: vector of the update status of each matcher. The matcherIdx index will
 //                     be updated from UPDATE_UNKNOWN after this call.
 // [cycleTracker]: intermediate param used during recursion.
 bool determineMatcherUpdateStatus(const StatsdConfig& config, const int matcherIdx,
-                                  const unordered_map<int64_t, int>& oldLogTrackerMap,
-                                  const vector<sp<LogMatchingTracker>>& oldAtomMatchers,
-                                  const unordered_map<int64_t, int>& newLogTrackerMap,
+                                  const unordered_map<int64_t, int>& oldAtomMatchingTrackerMap,
+                                  const vector<sp<AtomMatchingTracker>>& oldAtomMatchingTrackers,
+                                  const unordered_map<int64_t, int>& newAtomMatchingTrackerMap,
                                   vector<UpdateStatus>& matchersToUpdate,
                                   vector<bool>& cycleTracker);
 
-// Updates the LogMatchingTrackers.
+// Updates the AtomMatchingTrackers.
 // input:
 // [config]: the input StatsdConfig
-// [oldLogTrackerMap]: existing matcher id to index mapping
-// [oldAtomMatchers]: stores the existing LogMatchingTrackers
+// [oldAtomMatchingTrackerMap]: existing matcher id to index mapping
+// [oldAtomMatchingTrackers]: stores the existing AtomMatchingTrackers
 // output:
 // [allTagIds]: contains the set of all interesting tag ids to this config.
-// [newLogTrackerMap]: new matcher id to index mapping
-// [newAtomMatchers]: stores the new LogMatchingTrackers
-bool updateLogTrackers(const StatsdConfig& config, const sp<UidMap>& uidMap,
-                       const unordered_map<int64_t, int>& oldLogTrackerMap,
-                       const vector<sp<LogMatchingTracker>>& oldAtomMatchers, set<int>& allTagIds,
-                       unordered_map<int64_t, int>& newLogTrackerMap,
-                       vector<sp<LogMatchingTracker>>& newAtomMatchers);
+// [newAtomMatchingTrackerMap]: new matcher id to index mapping
+// [newAtomMatchers]: stores the new AtomMatchingTrackers
+bool updateAtomTrackers(const StatsdConfig& config, const sp<UidMap>& uidMap,
+                        const unordered_map<int64_t, int>& oldAtomMatchingTrackerMap,
+                        const vector<sp<AtomMatchingTracker>>& oldAtomMatchingTrackers,
+                        set<int>& allTagIds, unordered_map<int64_t, int>& newAtomMatchingTrackerMap,
+                        vector<sp<AtomMatchingTracker>>& newAtomMatchingTrackers);
 
 // Updates the existing MetricsManager from a new StatsdConfig.
 // Parameters are the members of MetricsManager. See MetricsManager for declaration.
@@ -78,12 +78,12 @@
                         const sp<AlarmMonitor>& anomalyAlarmMonitor,
                         const sp<AlarmMonitor>& periodicAlarmMonitor, const int64_t timeBaseNs,
                         const int64_t currentTimeNs,
-                        const std::vector<sp<LogMatchingTracker>>& oldAtomMatchers,
-                        const unordered_map<int64_t, int>& oldLogTrackerMap,
+                        const std::vector<sp<AtomMatchingTracker>>& oldAtomMatchingTrackers,
+                        const unordered_map<int64_t, int>& oldAtomMatchingTrackerMap,
                         std::set<int>& allTagIds,
-                        std::vector<sp<LogMatchingTracker>>& newAtomMatchers,
-                        unordered_map<int64_t, int>& newLogTrackerMap);
+                        std::vector<sp<AtomMatchingTracker>>& newAtomMatchingTrackers,
+                        unordered_map<int64_t, int>& newAtomMatchingTrackerMap);
 
 }  // namespace statsd
 }  // namespace os
-}  // namespace android
\ No newline at end of file
+}  // namespace android
diff --git a/cmds/statsd/src/metrics/parsing_utils/metrics_manager_util.cpp b/cmds/statsd/src/metrics/parsing_utils/metrics_manager_util.cpp
index 52ef95d..58262aa 100644
--- a/cmds/statsd/src/metrics/parsing_utils/metrics_manager_util.cpp
+++ b/cmds/statsd/src/metrics/parsing_utils/metrics_manager_util.cpp
@@ -26,9 +26,9 @@
 #include "condition/SimpleConditionTracker.h"
 #include "external/StatsPullerManager.h"
 #include "hash.h"
-#include "matchers/CombinationLogMatchingTracker.h"
+#include "matchers/CombinationAtomMatchingTracker.h"
 #include "matchers/EventMatcherWizard.h"
-#include "matchers/SimpleLogMatchingTracker.h"
+#include "matchers/SimpleAtomMatchingTracker.h"
 #include "metrics/CountMetricProducer.h"
 #include "metrics/DurationMetricProducer.h"
 #include "metrics/EventMetricProducer.h"
@@ -62,8 +62,8 @@
 
 }  // namespace
 
-sp<LogMatchingTracker> createLogTracker(const AtomMatcher& logMatcher, const int index,
-                                        const sp<UidMap>& uidMap) {
+sp<AtomMatchingTracker> createAtomMatchingTracker(const AtomMatcher& logMatcher, const int index,
+                                                  const sp<UidMap>& uidMap) {
     string serializedMatcher;
     if (!logMatcher.SerializeToString(&serializedMatcher)) {
         ALOGE("Unable to serialize matcher %lld", (long long)logMatcher.id());
@@ -72,11 +72,11 @@
     uint64_t protoHash = Hash64(serializedMatcher);
     switch (logMatcher.contents_case()) {
         case AtomMatcher::ContentsCase::kSimpleAtomMatcher:
-            return new SimpleLogMatchingTracker(logMatcher.id(), index, protoHash,
-                                                logMatcher.simple_atom_matcher(), uidMap);
+            return new SimpleAtomMatchingTracker(logMatcher.id(), index, protoHash,
+                                                 logMatcher.simple_atom_matcher(), uidMap);
             break;
         case AtomMatcher::ContentsCase::kCombination:
-            return new CombinationLogMatchingTracker(logMatcher.id(), index, protoHash);
+            return new CombinationAtomMatchingTracker(logMatcher.id(), index, protoHash);
             break;
         default:
             ALOGE("Matcher \"%lld\" malformed", (long long)logMatcher.id());
@@ -84,18 +84,18 @@
     }
 }
 
-bool handleMetricWithLogTrackers(const int64_t what, const int metricIndex,
-                                 const bool usedForDimension,
-                                 const vector<sp<LogMatchingTracker>>& allAtomMatchers,
-                                 const unordered_map<int64_t, int>& logTrackerMap,
-                                 unordered_map<int, std::vector<int>>& trackerToMetricMap,
-                                 int& logTrackerIndex) {
-    auto logTrackerIt = logTrackerMap.find(what);
-    if (logTrackerIt == logTrackerMap.end()) {
+bool handleMetricWithAtomMatchingTrackers(
+        const int64_t what, const int metricIndex, const bool usedForDimension,
+        const vector<sp<AtomMatchingTracker>>& allAtomMatchingTrackers,
+        const unordered_map<int64_t, int>& atomMatchingTrackerMap,
+        unordered_map<int, std::vector<int>>& trackerToMetricMap, int& logTrackerIndex) {
+    auto logTrackerIt = atomMatchingTrackerMap.find(what);
+    if (logTrackerIt == atomMatchingTrackerMap.end()) {
         ALOGW("cannot find the AtomMatcher \"%lld\" in config", (long long)what);
         return false;
     }
-    if (usedForDimension && allAtomMatchers[logTrackerIt->second]->getAtomIds().size() > 1) {
+    if (usedForDimension &&
+        allAtomMatchingTrackers[logTrackerIt->second]->getAtomIds().size() > 1) {
         ALOGE("AtomMatcher \"%lld\" has more than one tag ids. When a metric has dimension, "
               "the \"what\" can only about one atom type.",
               (long long)what);
@@ -107,17 +107,17 @@
     return true;
 }
 
-bool handlePullMetricTriggerWithLogTrackers(
+bool handlePullMetricTriggerWithAtomMatchingTrackers(
         const int64_t trigger, const int metricIndex,
-        const vector<sp<LogMatchingTracker>>& allAtomMatchers,
-        const unordered_map<int64_t, int>& logTrackerMap,
+        const vector<sp<AtomMatchingTracker>>& allAtomMatchingTrackers,
+        const unordered_map<int64_t, int>& atomMatchingTrackerMap,
         unordered_map<int, std::vector<int>>& trackerToMetricMap, int& logTrackerIndex) {
-    auto logTrackerIt = logTrackerMap.find(trigger);
-    if (logTrackerIt == logTrackerMap.end()) {
+    auto logTrackerIt = atomMatchingTrackerMap.find(trigger);
+    if (logTrackerIt == atomMatchingTrackerMap.end()) {
         ALOGW("cannot find the AtomMatcher \"%lld\" in config", (long long)trigger);
         return false;
     }
-    if (allAtomMatchers[logTrackerIt->second]->getAtomIds().size() > 1) {
+    if (allAtomMatchingTrackers[logTrackerIt->second]->getAtomIds().size() > 1) {
         ALOGE("AtomMatcher \"%lld\" has more than one tag ids."
               "Trigger can only be one atom type.",
               (long long)trigger);
@@ -209,7 +209,7 @@
 bool handleMetricActivation(
         const StatsdConfig& config, const int64_t metricId, const int metricIndex,
         const unordered_map<int64_t, int>& metricToActivationMap,
-        const unordered_map<int64_t, int>& logTrackerMap,
+        const unordered_map<int64_t, int>& atomMatchingTrackerMap,
         unordered_map<int, vector<int>>& activationAtomTrackerToMetricMap,
         unordered_map<int, vector<int>>& deactivationAtomTrackerToMetricMap,
         vector<int>& metricsWithActivation,
@@ -225,8 +225,8 @@
     for (int i = 0; i < metricActivation.event_activation_size(); i++) {
         const EventActivation& activation = metricActivation.event_activation(i);
 
-        auto itr = logTrackerMap.find(activation.atom_matcher_id());
-        if (itr == logTrackerMap.end()) {
+        auto itr = atomMatchingTrackerMap.find(activation.atom_matcher_id());
+        if (itr == atomMatchingTrackerMap.end()) {
             ALOGE("Atom matcher not found for event activation.");
             return false;
         }
@@ -242,8 +242,8 @@
         eventActivationMap.emplace(atomMatcherIndex, activationWrapper);
 
         if (activation.has_deactivation_atom_matcher_id()) {
-            itr = logTrackerMap.find(activation.deactivation_atom_matcher_id());
-            if (itr == logTrackerMap.end()) {
+            itr = atomMatchingTrackerMap.find(activation.deactivation_atom_matcher_id());
+            if (itr == atomMatchingTrackerMap.end()) {
                 ALOGE("Atom matcher not found for event deactivation.");
                 return false;
             }
@@ -257,33 +257,35 @@
     return true;
 }
 
-bool initLogTrackers(const StatsdConfig& config, const sp<UidMap>& uidMap,
-                     unordered_map<int64_t, int>& logTrackerMap,
-                     vector<sp<LogMatchingTracker>>& allAtomMatchers, set<int>& allTagIds) {
+bool initAtomMatchingTrackers(const StatsdConfig& config, const sp<UidMap>& uidMap,
+                              unordered_map<int64_t, int>& atomMatchingTrackerMap,
+                              vector<sp<AtomMatchingTracker>>& allAtomMatchingTrackers,
+                              set<int>& allTagIds) {
     vector<AtomMatcher> matcherConfigs;
     const int atomMatcherCount = config.atom_matcher_size();
     matcherConfigs.reserve(atomMatcherCount);
-    allAtomMatchers.reserve(atomMatcherCount);
+    allAtomMatchingTrackers.reserve(atomMatcherCount);
 
     for (int i = 0; i < atomMatcherCount; i++) {
         const AtomMatcher& logMatcher = config.atom_matcher(i);
-        int index = allAtomMatchers.size();
-        sp<LogMatchingTracker> tracker = createLogTracker(logMatcher, index, uidMap);
+        int index = allAtomMatchingTrackers.size();
+        sp<AtomMatchingTracker> tracker = createAtomMatchingTracker(logMatcher, index, uidMap);
         if (tracker == nullptr) {
             return false;
         }
-        allAtomMatchers.push_back(tracker);
-        if (logTrackerMap.find(logMatcher.id()) != logTrackerMap.end()) {
+        allAtomMatchingTrackers.push_back(tracker);
+        if (atomMatchingTrackerMap.find(logMatcher.id()) != atomMatchingTrackerMap.end()) {
             ALOGE("Duplicate AtomMatcher found!");
             return false;
         }
-        logTrackerMap[logMatcher.id()] = index;
+        atomMatchingTrackerMap[logMatcher.id()] = index;
         matcherConfigs.push_back(logMatcher);
     }
 
-    vector<bool> stackTracker2(allAtomMatchers.size(), false);
-    for (auto& matcher : allAtomMatchers) {
-        if (!matcher->init(matcherConfigs, allAtomMatchers, logTrackerMap, stackTracker2)) {
+    vector<bool> stackTracker2(allAtomMatchingTrackers.size(), false);
+    for (auto& matcher : allAtomMatchingTrackers) {
+        if (!matcher->init(matcherConfigs, allAtomMatchingTrackers, atomMatchingTrackerMap,
+                           stackTracker2)) {
             return false;
         }
         // Collect all the tag ids that are interesting. TagIds exist in leaf nodes only.
@@ -294,7 +296,7 @@
 }
 
 bool initConditions(const ConfigKey& key, const StatsdConfig& config,
-                    const unordered_map<int64_t, int>& logTrackerMap,
+                    const unordered_map<int64_t, int>& atomMatchingTrackerMap,
                     unordered_map<int64_t, int>& conditionTrackerMap,
                     vector<sp<ConditionTracker>>& allConditionTrackers,
                     unordered_map<int, std::vector<int>>& trackerToConditionMap,
@@ -312,7 +314,8 @@
         switch (condition.contents_case()) {
             case Predicate::ContentsCase::kSimplePredicate: {
                 allConditionTrackers.push_back(new SimpleConditionTracker(
-                        key, condition.id(), index, condition.simple_predicate(), logTrackerMap));
+                        key, condition.id(), index, condition.simple_predicate(),
+                        atomMatchingTrackerMap));
                 break;
             }
             case Predicate::ContentsCase::kCombination: {
@@ -339,7 +342,7 @@
                                     stackTracker, initialConditionCache)) {
             return false;
         }
-        for (const int trackerIndex : conditionTracker->getLogTrackerIndex()) {
+        for (const int trackerIndex : conditionTracker->getAtomMatchingTrackerIndex()) {
             auto& conditionList = trackerToConditionMap[trackerIndex];
             conditionList.push_back(i);
         }
@@ -367,9 +370,9 @@
 
 bool initMetrics(const ConfigKey& key, const StatsdConfig& config, const int64_t timeBaseTimeNs,
                  const int64_t currentTimeNs, const sp<StatsPullerManager>& pullerManager,
-                 const unordered_map<int64_t, int>& logTrackerMap,
+                 const unordered_map<int64_t, int>& atomMatchingTrackerMap,
                  const unordered_map<int64_t, int>& conditionTrackerMap,
-                 const vector<sp<LogMatchingTracker>>& allAtomMatchers,
+                 const vector<sp<AtomMatchingTracker>>& allAtomMatchingTrackers,
                  const unordered_map<int64_t, int>& stateAtomIdMap,
                  const unordered_map<int64_t, unordered_map<int, int64_t>>& allStateGroupMaps,
                  vector<sp<ConditionTracker>>& allConditionTrackers,
@@ -382,7 +385,7 @@
                  unordered_map<int, vector<int>>& deactivationAtomTrackerToMetricMap,
                  vector<int>& metricsWithActivation) {
     sp<ConditionWizard> wizard = new ConditionWizard(allConditionTrackers);
-    sp<EventMatcherWizard> matcherWizard = new EventMatcherWizard(allAtomMatchers);
+    sp<EventMatcherWizard> matcherWizard = new EventMatcherWizard(allAtomMatchingTrackers);
     const int allMetricsCount = config.count_metric_size() + config.duration_metric_size() +
                                 config.event_metric_size() + config.gauge_metric_size() +
                                 config.value_metric_size();
@@ -413,9 +416,10 @@
         int metricIndex = allMetricProducers.size();
         metricMap.insert({metric.id(), metricIndex});
         int trackerIndex;
-        if (!handleMetricWithLogTrackers(metric.what(), metricIndex,
-                                         metric.has_dimensions_in_what(), allAtomMatchers,
-                                         logTrackerMap, trackerToMetricMap, trackerIndex)) {
+        if (!handleMetricWithAtomMatchingTrackers(metric.what(), metricIndex,
+                                                  metric.has_dimensions_in_what(),
+                                                  allAtomMatchingTrackers, atomMatchingTrackerMap,
+                                                  trackerToMetricMap, trackerIndex)) {
             return false;
         }
 
@@ -450,7 +454,7 @@
         unordered_map<int, shared_ptr<Activation>> eventActivationMap;
         unordered_map<int, vector<shared_ptr<Activation>>> eventDeactivationMap;
         bool success = handleMetricActivation(
-                config, metric.id(), metricIndex, metricToActivationMap, logTrackerMap,
+                config, metric.id(), metricIndex, metricToActivationMap, atomMatchingTrackerMap,
                 activationAtomTrackerToMetricMap, deactivationAtomTrackerToMetricMap,
                 metricsWithActivation, eventActivationMap, eventDeactivationMap);
         if (!success) return false;
@@ -487,24 +491,27 @@
 
         int trackerIndices[3] = {-1, -1, -1};
         if (!simplePredicate.has_start() ||
-            !handleMetricWithLogTrackers(simplePredicate.start(), metricIndex,
-                                         metric.has_dimensions_in_what(), allAtomMatchers,
-                                         logTrackerMap, trackerToMetricMap, trackerIndices[0])) {
+            !handleMetricWithAtomMatchingTrackers(simplePredicate.start(), metricIndex,
+                                                  metric.has_dimensions_in_what(),
+                                                  allAtomMatchingTrackers, atomMatchingTrackerMap,
+                                                  trackerToMetricMap, trackerIndices[0])) {
             ALOGE("Duration metrics must specify a valid the start event matcher");
             return false;
         }
 
         if (simplePredicate.has_stop() &&
-            !handleMetricWithLogTrackers(simplePredicate.stop(), metricIndex,
-                                         metric.has_dimensions_in_what(), allAtomMatchers,
-                                         logTrackerMap, trackerToMetricMap, trackerIndices[1])) {
+            !handleMetricWithAtomMatchingTrackers(simplePredicate.stop(), metricIndex,
+                                                  metric.has_dimensions_in_what(),
+                                                  allAtomMatchingTrackers, atomMatchingTrackerMap,
+                                                  trackerToMetricMap, trackerIndices[1])) {
             return false;
         }
 
         if (simplePredicate.has_stop_all() &&
-            !handleMetricWithLogTrackers(simplePredicate.stop_all(), metricIndex,
-                                         metric.has_dimensions_in_what(), allAtomMatchers,
-                                         logTrackerMap, trackerToMetricMap, trackerIndices[2])) {
+            !handleMetricWithAtomMatchingTrackers(simplePredicate.stop_all(), metricIndex,
+                                                  metric.has_dimensions_in_what(),
+                                                  allAtomMatchingTrackers, atomMatchingTrackerMap,
+                                                  trackerToMetricMap, trackerIndices[2])) {
             return false;
         }
 
@@ -556,7 +563,7 @@
         unordered_map<int, shared_ptr<Activation>> eventActivationMap;
         unordered_map<int, vector<shared_ptr<Activation>>> eventDeactivationMap;
         bool success = handleMetricActivation(
-                config, metric.id(), metricIndex, metricToActivationMap, logTrackerMap,
+                config, metric.id(), metricIndex, metricToActivationMap, atomMatchingTrackerMap,
                 activationAtomTrackerToMetricMap, deactivationAtomTrackerToMetricMap,
                 metricsWithActivation, eventActivationMap, eventDeactivationMap);
         if (!success) return false;
@@ -580,8 +587,9 @@
             return false;
         }
         int trackerIndex;
-        if (!handleMetricWithLogTrackers(metric.what(), metricIndex, false, allAtomMatchers,
-                                         logTrackerMap, trackerToMetricMap, trackerIndex)) {
+        if (!handleMetricWithAtomMatchingTrackers(metric.what(), metricIndex, false,
+                                                  allAtomMatchingTrackers, atomMatchingTrackerMap,
+                                                  trackerToMetricMap, trackerIndex)) {
             return false;
         }
 
@@ -603,7 +611,7 @@
         unordered_map<int, shared_ptr<Activation>> eventActivationMap;
         unordered_map<int, vector<shared_ptr<Activation>>> eventDeactivationMap;
         bool success = handleMetricActivation(
-                config, metric.id(), metricIndex, metricToActivationMap, logTrackerMap,
+                config, metric.id(), metricIndex, metricToActivationMap, atomMatchingTrackerMap,
                 activationAtomTrackerToMetricMap, deactivationAtomTrackerToMetricMap,
                 metricsWithActivation, eventActivationMap, eventDeactivationMap);
         if (!success) return false;
@@ -636,13 +644,14 @@
         int metricIndex = allMetricProducers.size();
         metricMap.insert({metric.id(), metricIndex});
         int trackerIndex;
-        if (!handleMetricWithLogTrackers(metric.what(), metricIndex,
-                                         metric.has_dimensions_in_what(), allAtomMatchers,
-                                         logTrackerMap, trackerToMetricMap, trackerIndex)) {
+        if (!handleMetricWithAtomMatchingTrackers(metric.what(), metricIndex,
+                                                  metric.has_dimensions_in_what(),
+                                                  allAtomMatchingTrackers, atomMatchingTrackerMap,
+                                                  trackerToMetricMap, trackerIndex)) {
             return false;
         }
 
-        sp<LogMatchingTracker> atomMatcher = allAtomMatchers.at(trackerIndex);
+        sp<AtomMatchingTracker> atomMatcher = allAtomMatchingTrackers.at(trackerIndex);
         // If it is pulled atom, it should be simple matcher with one tagId.
         if (atomMatcher->getAtomIds().size() != 1) {
             return false;
@@ -691,7 +700,7 @@
         unordered_map<int, shared_ptr<Activation>> eventActivationMap;
         unordered_map<int, vector<shared_ptr<Activation>>> eventDeactivationMap;
         bool success = handleMetricActivation(
-                config, metric.id(), metricIndex, metricToActivationMap, logTrackerMap,
+                config, metric.id(), metricIndex, metricToActivationMap, atomMatchingTrackerMap,
                 activationAtomTrackerToMetricMap, deactivationAtomTrackerToMetricMap,
                 metricsWithActivation, eventActivationMap, eventDeactivationMap);
         if (!success) return false;
@@ -727,13 +736,14 @@
         int metricIndex = allMetricProducers.size();
         metricMap.insert({metric.id(), metricIndex});
         int trackerIndex;
-        if (!handleMetricWithLogTrackers(metric.what(), metricIndex,
-                                         metric.has_dimensions_in_what(), allAtomMatchers,
-                                         logTrackerMap, trackerToMetricMap, trackerIndex)) {
+        if (!handleMetricWithAtomMatchingTrackers(metric.what(), metricIndex,
+                                                  metric.has_dimensions_in_what(),
+                                                  allAtomMatchingTrackers, atomMatchingTrackerMap,
+                                                  trackerToMetricMap, trackerIndex)) {
             return false;
         }
 
-        sp<LogMatchingTracker> atomMatcher = allAtomMatchers.at(trackerIndex);
+        sp<AtomMatchingTracker> atomMatcher = allAtomMatchingTrackers.at(trackerIndex);
         // For GaugeMetric atom, it should be simple matcher with one tagId.
         if (atomMatcher->getAtomIds().size() != 1) {
             return false;
@@ -752,12 +762,13 @@
             if (metric.sampling_type() != GaugeMetric::FIRST_N_SAMPLES) {
                 return false;
             }
-            if (!handlePullMetricTriggerWithLogTrackers(metric.trigger_event(), metricIndex,
-                                                        allAtomMatchers, logTrackerMap,
-                                                        trackerToMetricMap, triggerTrackerIndex)) {
+            if (!handlePullMetricTriggerWithAtomMatchingTrackers(
+                        metric.trigger_event(), metricIndex, allAtomMatchingTrackers,
+                        atomMatchingTrackerMap, trackerToMetricMap, triggerTrackerIndex)) {
                 return false;
             }
-            sp<LogMatchingTracker> triggerAtomMatcher = allAtomMatchers.at(triggerTrackerIndex);
+            sp<AtomMatchingTracker> triggerAtomMatcher =
+                    allAtomMatchingTrackers.at(triggerTrackerIndex);
             triggerAtomId = *(triggerAtomMatcher->getAtomIds().begin());
         }
 
@@ -785,7 +796,7 @@
         unordered_map<int, shared_ptr<Activation>> eventActivationMap;
         unordered_map<int, vector<shared_ptr<Activation>>> eventDeactivationMap;
         bool success = handleMetricActivation(
-                config, metric.id(), metricIndex, metricToActivationMap, logTrackerMap,
+                config, metric.id(), metricIndex, metricToActivationMap, atomMatchingTrackerMap,
                 activationAtomTrackerToMetricMap, deactivationAtomTrackerToMetricMap,
                 metricsWithActivation, eventActivationMap, eventDeactivationMap);
         if (!success) return false;
@@ -923,8 +934,8 @@
                       const sp<AlarmMonitor>& anomalyAlarmMonitor,
                       const sp<AlarmMonitor>& periodicAlarmMonitor, const int64_t timeBaseNs,
                       const int64_t currentTimeNs, set<int>& allTagIds,
-                      vector<sp<LogMatchingTracker>>& allAtomMatchers,
-                      unordered_map<int64_t, int>& logTrackerMap,
+                      vector<sp<AtomMatchingTracker>>& allAtomMatchingTrackers,
+                      unordered_map<int64_t, int>& atomMatchingTrackerMap,
                       vector<sp<ConditionTracker>>& allConditionTrackers,
                       vector<sp<MetricProducer>>& allMetricProducers,
                       vector<sp<AnomalyTracker>>& allAnomalyTrackers,
@@ -942,14 +953,15 @@
     unordered_map<int64_t, int> stateAtomIdMap;
     unordered_map<int64_t, unordered_map<int, int64_t>> allStateGroupMaps;
 
-    if (!initLogTrackers(config, uidMap, logTrackerMap, allAtomMatchers, allTagIds)) {
-        ALOGE("initLogMatchingTrackers failed");
+    if (!initAtomMatchingTrackers(config, uidMap, atomMatchingTrackerMap, allAtomMatchingTrackers,
+                                  allTagIds)) {
+        ALOGE("initAtomMatchingTrackers failed");
         return false;
     }
-    VLOG("initLogMatchingTrackers succeed...");
+    VLOG("initAtomMatchingTrackers succeed...");
 
-    if (!initConditions(key, config, logTrackerMap, conditionTrackerMap, allConditionTrackers,
-                        trackerToConditionMap, initialConditionCache)) {
+    if (!initConditions(key, config, atomMatchingTrackerMap, conditionTrackerMap,
+                        allConditionTrackers, trackerToConditionMap, initialConditionCache)) {
         ALOGE("initConditionTrackers failed");
         return false;
     }
@@ -958,12 +970,12 @@
         ALOGE("initStates failed");
         return false;
     }
-    if (!initMetrics(key, config, timeBaseNs, currentTimeNs, pullerManager, logTrackerMap,
-                     conditionTrackerMap, allAtomMatchers, stateAtomIdMap, allStateGroupMaps,
-                     allConditionTrackers, initialConditionCache, allMetricProducers,
-                     conditionToMetricMap, trackerToMetricMap, metricProducerMap, noReportMetricIds,
-                     activationAtomTrackerToMetricMap, deactivationAtomTrackerToMetricMap,
-                     metricsWithActivation)) {
+    if (!initMetrics(key, config, timeBaseNs, currentTimeNs, pullerManager, atomMatchingTrackerMap,
+                     conditionTrackerMap, allAtomMatchingTrackers, stateAtomIdMap,
+                     allStateGroupMaps, allConditionTrackers, initialConditionCache,
+                     allMetricProducers, conditionToMetricMap, trackerToMetricMap,
+                     metricProducerMap, noReportMetricIds, activationAtomTrackerToMetricMap,
+                     deactivationAtomTrackerToMetricMap, metricsWithActivation)) {
         ALOGE("initMetricProducers failed");
         return false;
     }
diff --git a/cmds/statsd/src/metrics/parsing_utils/metrics_manager_util.h b/cmds/statsd/src/metrics/parsing_utils/metrics_manager_util.h
index ed9951f..4cfd1b0 100644
--- a/cmds/statsd/src/metrics/parsing_utils/metrics_manager_util.h
+++ b/cmds/statsd/src/metrics/parsing_utils/metrics_manager_util.h
@@ -23,7 +23,7 @@
 #include "anomaly/AlarmTracker.h"
 #include "condition/ConditionTracker.h"
 #include "external/StatsPullerManager.h"
-#include "matchers/LogMatchingTracker.h"
+#include "matchers/AtomMatchingTracker.h"
 #include "metrics/MetricProducer.h"
 
 namespace android {
@@ -33,14 +33,14 @@
 // Helper functions for creating individual config components from StatsdConfig.
 // Should only be called from metrics_manager_util and config_update_utils.
 
-// Create a LogMatchingTracker.
+// Create a AtomMatchingTracker.
 // input:
 // [logMatcher]: the input AtomMatcher from the StatsdConfig
 // [index]: the index of the matcher
 // output:
-// new LogMatchingTracker, or null if the tracker is unable to be created
-sp<LogMatchingTracker> createLogTracker(const AtomMatcher& logMatcher, const int index,
-                                        const sp<UidMap>& uidMap);
+// new AtomMatchingTracker, or null if the tracker is unable to be created
+sp<AtomMatchingTracker> createAtomMatchingTracker(const AtomMatcher& logMatcher, const int index,
+                                                  const sp<UidMap>& uidMap);
 
 // Helper functions for MetricsManager to initialize from StatsdConfig.
 // *Note*: only initStatsdConfig() should be called from outside.
@@ -48,24 +48,24 @@
 // steps, created to make unit tests easier. And most of the parameters in these
 // functions are temporary objects in the initialization phase.
 
-// Initialize the LogMatchingTrackers.
+// Initialize the AtomMatchingTrackers.
 // input:
 // [key]: the config key that this config belongs to
 // [config]: the input StatsdConfig
 // output:
-// [logTrackerMap]: this map should contain matcher name to index mapping
-// [allAtomMatchers]: should store the sp to all the LogMatchingTracker
+// [atomMatchingTrackerMap]: this map should contain matcher name to index mapping
+// [allAtomMatchingTrackers]: should store the sp to all the AtomMatchingTracker
 // [allTagIds]: contains the set of all interesting tag ids to this config.
-bool initLogTrackers(const StatsdConfig& config, const sp<UidMap>& uidMap,
-                     std::unordered_map<int64_t, int>& logTrackerMap,
-                     std::vector<sp<LogMatchingTracker>>& allAtomMatchers,
-                     std::set<int>& allTagIds);
+bool initAtomMatchingTrackers(const StatsdConfig& config, const sp<UidMap>& uidMap,
+                              std::unordered_map<int64_t, int>& atomMatchingTrackerMap,
+                              std::vector<sp<AtomMatchingTracker>>& allAtomMatchingTrackers,
+                              std::set<int>& allTagIds);
 
 // Initialize ConditionTrackers
 // input:
 // [key]: the config key that this config belongs to
 // [config]: the input config
-// [logTrackerMap]: LogMatchingTracker name to index mapping from previous step.
+// [atomMatchingTrackerMap]: AtomMatchingTracker name to index mapping from previous step.
 // output:
 // [conditionTrackerMap]: this map should contain condition name to index mapping
 // [allConditionTrackers]: stores the sp to all the ConditionTrackers
@@ -73,7 +73,7 @@
 //                        log tracker to condition trackers that use the log tracker
 // [initialConditionCache]: stores the initial conditions for each ConditionTracker
 bool initConditions(const ConfigKey& key, const StatsdConfig& config,
-                    const std::unordered_map<int64_t, int>& logTrackerMap,
+                    const std::unordered_map<int64_t, int>& atomMatchingTrackerMap,
                     std::unordered_map<int64_t, int>& conditionTrackerMap,
                     std::vector<sp<ConditionTracker>>& allConditionTrackers,
                     std::unordered_map<int, std::vector<int>>& trackerToConditionMap,
@@ -96,7 +96,7 @@
 // [key]: the config key that this config belongs to
 // [config]: the input config
 // [timeBaseSec]: start time base for all metrics
-// [logTrackerMap]: LogMatchingTracker name to index mapping from previous step.
+// [atomMatchingTrackerMap]: AtomMatchingTracker name to index mapping from previous step.
 // [conditionTrackerMap]: condition name to index mapping
 // [stateAtomIdMap]: contains the mapping from state ids to atom ids
 // [allStateGroupMaps]: contains the mapping from atom ids and state values to
@@ -109,10 +109,10 @@
 bool initMetrics(
         const ConfigKey& key, const StatsdConfig& config, const int64_t timeBaseTimeNs,
         const int64_t currentTimeNs, const sp<StatsPullerManager>& pullerManager,
-        const std::unordered_map<int64_t, int>& logTrackerMap,
+        const std::unordered_map<int64_t, int>& atomMatchingTrackerMap,
         const std::unordered_map<int64_t, int>& conditionTrackerMap,
         const std::unordered_map<int, std::vector<MetricConditionLink>>& eventConditionLinks,
-        const vector<sp<LogMatchingTracker>>& allAtomMatchers,
+        const vector<sp<AtomMatchingTracker>>& allAtomMatchingTrackers,
         const unordered_map<int64_t, int>& stateAtomIdMap,
         const unordered_map<int64_t, unordered_map<int, int64_t>>& allStateGroupMaps,
         vector<sp<ConditionTracker>>& allConditionTrackers,
@@ -132,8 +132,8 @@
                       const sp<AlarmMonitor>& anomalyAlarmMonitor,
                       const sp<AlarmMonitor>& periodicAlarmMonitor, const int64_t timeBaseNs,
                       const int64_t currentTimeNs, std::set<int>& allTagIds,
-                      std::vector<sp<LogMatchingTracker>>& allAtomMatchers,
-                      std::unordered_map<int64_t, int>& logTrackerMap,
+                      std::vector<sp<AtomMatchingTracker>>& allAtomMatchingTrackers,
+                      std::unordered_map<int64_t, int>& atomMatchingTrackerMap,
                       std::vector<sp<ConditionTracker>>& allConditionTrackers,
                       std::vector<sp<MetricProducer>>& allMetricProducers,
                       vector<sp<AnomalyTracker>>& allAnomalyTrackers,
diff --git a/cmds/statsd/tests/MetricsManager_test.cpp b/cmds/statsd/tests/MetricsManager_test.cpp
index 8dd6083..2dd774e 100644
--- a/cmds/statsd/tests/MetricsManager_test.cpp
+++ b/cmds/statsd/tests/MetricsManager_test.cpp
@@ -23,7 +23,7 @@
 #include "frameworks/base/cmds/statsd/src/statsd_config.pb.h"
 #include "metrics/metrics_test_helper.h"
 #include "src/condition/ConditionTracker.h"
-#include "src/matchers/LogMatchingTracker.h"
+#include "src/matchers/AtomMatchingTracker.h"
 #include "src/metrics/CountMetricProducer.h"
 #include "src/metrics/GaugeMetricProducer.h"
 #include "src/metrics/MetricProducer.h"
diff --git a/cmds/statsd/tests/StatsLogProcessor_test.cpp b/cmds/statsd/tests/StatsLogProcessor_test.cpp
index 1e6680c..f0ebc98 100644
--- a/cmds/statsd/tests/StatsLogProcessor_test.cpp
+++ b/cmds/statsd/tests/StatsLogProcessor_test.cpp
@@ -896,8 +896,8 @@
     EXPECT_TRUE(metricProducer2->isActive());
 
     int i = 0;
-    for (; i < metricsManager1->mAllAtomMatchers.size(); i++) {
-        if (metricsManager1->mAllAtomMatchers[i]->getId() ==
+    for (; i < metricsManager1->mAllAtomMatchingTrackers.size(); i++) {
+        if (metricsManager1->mAllAtomMatchingTrackers[i]->getId() ==
             metric1ActivationTrigger1->atom_matcher_id()) {
             break;
         }
@@ -908,8 +908,8 @@
     EXPECT_EQ(kNotActive, activation1->state);
 
     i = 0;
-    for (; i < metricsManager1->mAllAtomMatchers.size(); i++) {
-        if (metricsManager1->mAllAtomMatchers[i]->getId() ==
+    for (; i < metricsManager1->mAllAtomMatchingTrackers.size(); i++) {
+        if (metricsManager1->mAllAtomMatchingTrackers[i]->getId() ==
             metric1ActivationTrigger2->atom_matcher_id()) {
             break;
         }
@@ -981,8 +981,8 @@
     EXPECT_TRUE(metricProducer1002->isActive());
 
     i = 0;
-    for (; i < metricsManager1001->mAllAtomMatchers.size(); i++) {
-        if (metricsManager1001->mAllAtomMatchers[i]->getId() ==
+    for (; i < metricsManager1001->mAllAtomMatchingTrackers.size(); i++) {
+        if (metricsManager1001->mAllAtomMatchingTrackers[i]->getId() ==
             metric1ActivationTrigger1->atom_matcher_id()) {
             break;
         }
@@ -993,8 +993,8 @@
     EXPECT_EQ(kNotActive, activation1001_1->state);
 
     i = 0;
-    for (; i < metricsManager1001->mAllAtomMatchers.size(); i++) {
-        if (metricsManager1001->mAllAtomMatchers[i]->getId() ==
+    for (; i < metricsManager1001->mAllAtomMatchingTrackers.size(); i++) {
+        if (metricsManager1001->mAllAtomMatchingTrackers[i]->getId() ==
             metric1ActivationTrigger2->atom_matcher_id()) {
             break;
         }
@@ -1082,8 +1082,8 @@
     EXPECT_TRUE(metricProducerTimeBase3_2->isActive());
 
     i = 0;
-    for (; i < metricsManagerTimeBase3->mAllAtomMatchers.size(); i++) {
-        if (metricsManagerTimeBase3->mAllAtomMatchers[i]->getId() ==
+    for (; i < metricsManagerTimeBase3->mAllAtomMatchingTrackers.size(); i++) {
+        if (metricsManagerTimeBase3->mAllAtomMatchingTrackers[i]->getId() ==
             metric1ActivationTrigger1->atom_matcher_id()) {
             break;
         }
@@ -1094,8 +1094,8 @@
     EXPECT_EQ(kNotActive, activationTimeBase3_1->state);
 
     i = 0;
-    for (; i < metricsManagerTimeBase3->mAllAtomMatchers.size(); i++) {
-        if (metricsManagerTimeBase3->mAllAtomMatchers[i]->getId() ==
+    for (; i < metricsManagerTimeBase3->mAllAtomMatchingTrackers.size(); i++) {
+        if (metricsManagerTimeBase3->mAllAtomMatchingTrackers[i]->getId() ==
             metric1ActivationTrigger2->atom_matcher_id()) {
             break;
         }
@@ -1184,8 +1184,8 @@
     EXPECT_TRUE(metricProducerTimeBase4_2->isActive());
 
     i = 0;
-    for (; i < metricsManagerTimeBase4->mAllAtomMatchers.size(); i++) {
-        if (metricsManagerTimeBase4->mAllAtomMatchers[i]->getId() ==
+    for (; i < metricsManagerTimeBase4->mAllAtomMatchingTrackers.size(); i++) {
+        if (metricsManagerTimeBase4->mAllAtomMatchingTrackers[i]->getId() ==
             metric1ActivationTrigger1->atom_matcher_id()) {
             break;
         }
@@ -1196,8 +1196,8 @@
     EXPECT_EQ(kNotActive, activationTimeBase4_1->state);
 
     i = 0;
-    for (; i < metricsManagerTimeBase4->mAllAtomMatchers.size(); i++) {
-        if (metricsManagerTimeBase4->mAllAtomMatchers[i]->getId() ==
+    for (; i < metricsManagerTimeBase4->mAllAtomMatchingTrackers.size(); i++) {
+        if (metricsManagerTimeBase4->mAllAtomMatchingTrackers[i]->getId() ==
             metric1ActivationTrigger2->atom_matcher_id()) {
             break;
         }
@@ -1585,8 +1585,8 @@
     EXPECT_TRUE(metricProducer3->isActive());
 
     // Check event activations.
-    ASSERT_EQ(metricsManager1->mAllAtomMatchers.size(), 4);
-    EXPECT_EQ(metricsManager1->mAllAtomMatchers[0]->getId(),
+    ASSERT_EQ(metricsManager1->mAllAtomMatchingTrackers.size(), 4);
+    EXPECT_EQ(metricsManager1->mAllAtomMatchingTrackers[0]->getId(),
               metric1ActivationTrigger1->atom_matcher_id());
     const auto& activation1 = metricProducer1->mEventActivationMap.at(0);
     EXPECT_EQ(100 * NS_PER_SEC, activation1->ttl_ns);
@@ -1594,7 +1594,7 @@
     EXPECT_EQ(kNotActive, activation1->state);
     EXPECT_EQ(ACTIVATE_ON_BOOT, activation1->activationType);
 
-    EXPECT_EQ(metricsManager1->mAllAtomMatchers[1]->getId(),
+    EXPECT_EQ(metricsManager1->mAllAtomMatchingTrackers[1]->getId(),
               metric1ActivationTrigger2->atom_matcher_id());
     const auto& activation2 = metricProducer1->mEventActivationMap.at(1);
     EXPECT_EQ(200 * NS_PER_SEC, activation2->ttl_ns);
@@ -1602,7 +1602,7 @@
     EXPECT_EQ(kNotActive, activation2->state);
     EXPECT_EQ(ACTIVATE_IMMEDIATELY, activation2->activationType);
 
-    EXPECT_EQ(metricsManager1->mAllAtomMatchers[2]->getId(),
+    EXPECT_EQ(metricsManager1->mAllAtomMatchingTrackers[2]->getId(),
               metric2ActivationTrigger1->atom_matcher_id());
     const auto& activation3 = metricProducer2->mEventActivationMap.at(2);
     EXPECT_EQ(100 * NS_PER_SEC, activation3->ttl_ns);
@@ -1610,7 +1610,7 @@
     EXPECT_EQ(kNotActive, activation3->state);
     EXPECT_EQ(ACTIVATE_ON_BOOT, activation3->activationType);
 
-    EXPECT_EQ(metricsManager1->mAllAtomMatchers[3]->getId(),
+    EXPECT_EQ(metricsManager1->mAllAtomMatchingTrackers[3]->getId(),
               metric2ActivationTrigger2->atom_matcher_id());
     const auto& activation4 = metricProducer2->mEventActivationMap.at(3);
     EXPECT_EQ(200 * NS_PER_SEC, activation4->ttl_ns);
@@ -1685,8 +1685,8 @@
     // Activation 1 is kActiveOnBoot.
     // Activation 2 and 3 are not active.
     // Activation 4 is active.
-    ASSERT_EQ(metricsManager2->mAllAtomMatchers.size(), 4);
-    EXPECT_EQ(metricsManager2->mAllAtomMatchers[0]->getId(),
+    ASSERT_EQ(metricsManager2->mAllAtomMatchingTrackers.size(), 4);
+    EXPECT_EQ(metricsManager2->mAllAtomMatchingTrackers[0]->getId(),
               metric1ActivationTrigger1->atom_matcher_id());
     const auto& activation1001 = metricProducer1001->mEventActivationMap.at(0);
     EXPECT_EQ(100 * NS_PER_SEC, activation1001->ttl_ns);
@@ -1694,7 +1694,7 @@
     EXPECT_EQ(kActiveOnBoot, activation1001->state);
     EXPECT_EQ(ACTIVATE_ON_BOOT, activation1001->activationType);
 
-    EXPECT_EQ(metricsManager2->mAllAtomMatchers[1]->getId(),
+    EXPECT_EQ(metricsManager2->mAllAtomMatchingTrackers[1]->getId(),
               metric1ActivationTrigger2->atom_matcher_id());
     const auto& activation1002 = metricProducer1001->mEventActivationMap.at(1);
     EXPECT_EQ(200 * NS_PER_SEC, activation1002->ttl_ns);
@@ -1702,7 +1702,7 @@
     EXPECT_EQ(kNotActive, activation1002->state);
     EXPECT_EQ(ACTIVATE_IMMEDIATELY, activation1002->activationType);
 
-    EXPECT_EQ(metricsManager2->mAllAtomMatchers[2]->getId(),
+    EXPECT_EQ(metricsManager2->mAllAtomMatchingTrackers[2]->getId(),
               metric2ActivationTrigger1->atom_matcher_id());
     const auto& activation1003 = metricProducer1002->mEventActivationMap.at(2);
     EXPECT_EQ(100 * NS_PER_SEC, activation1003->ttl_ns);
@@ -1710,7 +1710,7 @@
     EXPECT_EQ(kNotActive, activation1003->state);
     EXPECT_EQ(ACTIVATE_ON_BOOT, activation1003->activationType);
 
-    EXPECT_EQ(metricsManager2->mAllAtomMatchers[3]->getId(),
+    EXPECT_EQ(metricsManager2->mAllAtomMatchingTrackers[3]->getId(),
               metric2ActivationTrigger2->atom_matcher_id());
     const auto& activation1004 = metricProducer1002->mEventActivationMap.at(3);
     EXPECT_EQ(200 * NS_PER_SEC, activation1004->ttl_ns);
diff --git a/cmds/statsd/tests/metrics/GaugeMetricProducer_test.cpp b/cmds/statsd/tests/metrics/GaugeMetricProducer_test.cpp
index d96ff8a..ba919f1 100644
--- a/cmds/statsd/tests/metrics/GaugeMetricProducer_test.cpp
+++ b/cmds/statsd/tests/metrics/GaugeMetricProducer_test.cpp
@@ -23,7 +23,7 @@
 
 #include "logd/LogEvent.h"
 #include "metrics_test_helper.h"
-#include "src/matchers/SimpleLogMatchingTracker.h"
+#include "src/matchers/SimpleAtomMatchingTracker.h"
 #include "src/metrics/MetricProducer.h"
 #include "src/stats_log_util.h"
 #include "stats_event.h"
diff --git a/cmds/statsd/tests/metrics/ValueMetricProducer_test.cpp b/cmds/statsd/tests/metrics/ValueMetricProducer_test.cpp
index 5524ebc..1000aea 100644
--- a/cmds/statsd/tests/metrics/ValueMetricProducer_test.cpp
+++ b/cmds/statsd/tests/metrics/ValueMetricProducer_test.cpp
@@ -22,7 +22,7 @@
 #include <vector>
 
 #include "metrics_test_helper.h"
-#include "src/matchers/SimpleLogMatchingTracker.h"
+#include "src/matchers/SimpleAtomMatchingTracker.h"
 #include "src/metrics/MetricProducer.h"
 #include "src/stats_log_util.h"
 #include "tests/statsd_test_util.h"
diff --git a/cmds/statsd/tests/metrics/parsing_utils/config_update_utils_test.cpp b/cmds/statsd/tests/metrics/parsing_utils/config_update_utils_test.cpp
index 6b50fe5..f6d3061 100644
--- a/cmds/statsd/tests/metrics/parsing_utils/config_update_utils_test.cpp
+++ b/cmds/statsd/tests/metrics/parsing_utils/config_update_utils_test.cpp
@@ -49,8 +49,8 @@
 sp<AlarmMonitor> anomalyAlarmMonitor;
 sp<AlarmMonitor> periodicAlarmMonitor;
 set<int> allTagIds;
-vector<sp<LogMatchingTracker>> oldAtomMatchers;
-unordered_map<int64_t, int> oldLogTrackerMap;
+vector<sp<AtomMatchingTracker>> oldAtomMatchingTrackers;
+unordered_map<int64_t, int> oldAtomMatchingTrackerMap;
 vector<sp<ConditionTracker>> oldConditionTrackers;
 vector<sp<MetricProducer>> oldMetricProducers;
 std::vector<sp<AnomalyTracker>> oldAnomalyTrackers;
@@ -71,8 +71,8 @@
 
     void SetUp() override {
         allTagIds.clear();
-        oldAtomMatchers.clear();
-        oldLogTrackerMap.clear();
+        oldAtomMatchingTrackers.clear();
+        oldAtomMatchingTrackerMap.clear();
         oldConditionTrackers.clear();
         oldMetricProducers.clear();
         oldAnomalyTrackers.clear();
@@ -89,13 +89,13 @@
 };
 
 bool initConfig(const StatsdConfig& config) {
-    return initStatsdConfig(key, config, uidMap, pullerManager, anomalyAlarmMonitor,
-                            periodicAlarmMonitor, timeBaseNs, timeBaseNs, allTagIds,
-                            oldAtomMatchers, oldLogTrackerMap, oldConditionTrackers,
-                            oldMetricProducers, oldAnomalyTrackers, oldAlarmTrackers,
-                            conditionToMetricMap, trackerToMetricMap, trackerToConditionMap,
-                            activationAtomTrackerToMetricMap, deactivationAtomTrackerToMetricMap,
-                            alertTrackerMap, metricsWithActivation, noReportMetricIds);
+    return initStatsdConfig(
+            key, config, uidMap, pullerManager, anomalyAlarmMonitor, periodicAlarmMonitor,
+            timeBaseNs, timeBaseNs, allTagIds, oldAtomMatchingTrackers, oldAtomMatchingTrackerMap,
+            oldConditionTrackers, oldMetricProducers, oldAnomalyTrackers, oldAlarmTrackers,
+            conditionToMetricMap, trackerToMetricMap, trackerToConditionMap,
+            activationAtomTrackerToMetricMap, deactivationAtomTrackerToMetricMap, alertTrackerMap,
+            metricsWithActivation, noReportMetricIds);
 }
 
 }  // anonymous namespace
@@ -111,10 +111,11 @@
 
     vector<UpdateStatus> matchersToUpdate(1, UPDATE_UNKNOWN);
     vector<bool> cycleTracker(1, false);
-    unordered_map<int64_t, int> newLogTrackerMap;
-    newLogTrackerMap[matcherId] = 0;
-    EXPECT_TRUE(determineMatcherUpdateStatus(config, 0, oldLogTrackerMap, oldAtomMatchers,
-                                             newLogTrackerMap, matchersToUpdate, cycleTracker));
+    unordered_map<int64_t, int> newAtomMatchingTrackerMap;
+    newAtomMatchingTrackerMap[matcherId] = 0;
+    EXPECT_TRUE(determineMatcherUpdateStatus(config, 0, oldAtomMatchingTrackerMap,
+                                             oldAtomMatchingTrackers, newAtomMatchingTrackerMap,
+                                             matchersToUpdate, cycleTracker));
     EXPECT_EQ(matchersToUpdate[0], UPDATE_PRESERVE);
 }
 
@@ -134,10 +135,11 @@
 
     vector<UpdateStatus> matchersToUpdate(1, UPDATE_UNKNOWN);
     vector<bool> cycleTracker(1, false);
-    unordered_map<int64_t, int> newLogTrackerMap;
-    newLogTrackerMap[matcherId] = 0;
-    EXPECT_TRUE(determineMatcherUpdateStatus(newConfig, 0, oldLogTrackerMap, oldAtomMatchers,
-                                             newLogTrackerMap, matchersToUpdate, cycleTracker));
+    unordered_map<int64_t, int> newAtomMatchingTrackerMap;
+    newAtomMatchingTrackerMap[matcherId] = 0;
+    EXPECT_TRUE(determineMatcherUpdateStatus(newConfig, 0, oldAtomMatchingTrackerMap,
+                                             oldAtomMatchingTrackers, newAtomMatchingTrackerMap,
+                                             matchersToUpdate, cycleTracker));
     EXPECT_EQ(matchersToUpdate[0], UPDATE_REPLACE);
 }
 
@@ -163,20 +165,21 @@
     EXPECT_TRUE(initConfig(config));
 
     StatsdConfig newConfig;
-    unordered_map<int64_t, int> newLogTrackerMap;
+    unordered_map<int64_t, int> newAtomMatchingTrackerMap;
     // Same matchers, different order, all should be preserved.
     *newConfig.add_atom_matcher() = matcher2;
-    newLogTrackerMap[matcher2Id] = 0;
+    newAtomMatchingTrackerMap[matcher2Id] = 0;
     *newConfig.add_atom_matcher() = matcher3;
-    newLogTrackerMap[matcher3Id] = 1;
+    newAtomMatchingTrackerMap[matcher3Id] = 1;
     *newConfig.add_atom_matcher() = matcher1;
-    newLogTrackerMap[matcher1Id] = 2;
+    newAtomMatchingTrackerMap[matcher1Id] = 2;
 
     vector<UpdateStatus> matchersToUpdate(3, UPDATE_UNKNOWN);
     vector<bool> cycleTracker(3, false);
     // Only update the combination. It should recurse the two child matchers and preserve all 3.
-    EXPECT_TRUE(determineMatcherUpdateStatus(newConfig, 1, oldLogTrackerMap, oldAtomMatchers,
-                                             newLogTrackerMap, matchersToUpdate, cycleTracker));
+    EXPECT_TRUE(determineMatcherUpdateStatus(newConfig, 1, oldAtomMatchingTrackerMap,
+                                             oldAtomMatchingTrackers, newAtomMatchingTrackerMap,
+                                             matchersToUpdate, cycleTracker));
     EXPECT_EQ(matchersToUpdate[0], UPDATE_PRESERVE);
     EXPECT_EQ(matchersToUpdate[1], UPDATE_PRESERVE);
     EXPECT_EQ(matchersToUpdate[2], UPDATE_PRESERVE);
@@ -207,19 +210,20 @@
     matcher3.mutable_combination()->set_operation(LogicalOperation::AND);
 
     StatsdConfig newConfig;
-    unordered_map<int64_t, int> newLogTrackerMap;
+    unordered_map<int64_t, int> newAtomMatchingTrackerMap;
     *newConfig.add_atom_matcher() = matcher2;
-    newLogTrackerMap[matcher2Id] = 0;
+    newAtomMatchingTrackerMap[matcher2Id] = 0;
     *newConfig.add_atom_matcher() = matcher3;
-    newLogTrackerMap[matcher3Id] = 1;
+    newAtomMatchingTrackerMap[matcher3Id] = 1;
     *newConfig.add_atom_matcher() = matcher1;
-    newLogTrackerMap[matcher1Id] = 2;
+    newAtomMatchingTrackerMap[matcher1Id] = 2;
 
     vector<UpdateStatus> matchersToUpdate(3, UPDATE_UNKNOWN);
     vector<bool> cycleTracker(3, false);
     // Only update the combination. The simple matchers should not be evaluated.
-    EXPECT_TRUE(determineMatcherUpdateStatus(newConfig, 1, oldLogTrackerMap, oldAtomMatchers,
-                                             newLogTrackerMap, matchersToUpdate, cycleTracker));
+    EXPECT_TRUE(determineMatcherUpdateStatus(newConfig, 1, oldAtomMatchingTrackerMap,
+                                             oldAtomMatchingTrackers, newAtomMatchingTrackerMap,
+                                             matchersToUpdate, cycleTracker));
     EXPECT_EQ(matchersToUpdate[0], UPDATE_UNKNOWN);
     EXPECT_EQ(matchersToUpdate[1], UPDATE_REPLACE);
     EXPECT_EQ(matchersToUpdate[2], UPDATE_UNKNOWN);
@@ -250,19 +254,20 @@
     matcher2.mutable_simple_atom_matcher()->set_atom_id(12);
 
     StatsdConfig newConfig;
-    unordered_map<int64_t, int> newLogTrackerMap;
+    unordered_map<int64_t, int> newAtomMatchingTrackerMap;
     *newConfig.add_atom_matcher() = matcher2;
-    newLogTrackerMap[matcher2Id] = 0;
+    newAtomMatchingTrackerMap[matcher2Id] = 0;
     *newConfig.add_atom_matcher() = matcher3;
-    newLogTrackerMap[matcher3Id] = 1;
+    newAtomMatchingTrackerMap[matcher3Id] = 1;
     *newConfig.add_atom_matcher() = matcher1;
-    newLogTrackerMap[matcher1Id] = 2;
+    newAtomMatchingTrackerMap[matcher1Id] = 2;
 
     vector<UpdateStatus> matchersToUpdate(3, UPDATE_UNKNOWN);
     vector<bool> cycleTracker(3, false);
     // Only update the combination.
-    EXPECT_TRUE(determineMatcherUpdateStatus(newConfig, 1, oldLogTrackerMap, oldAtomMatchers,
-                                             newLogTrackerMap, matchersToUpdate, cycleTracker));
+    EXPECT_TRUE(determineMatcherUpdateStatus(newConfig, 1, oldAtomMatchingTrackerMap,
+                                             oldAtomMatchingTrackers, newAtomMatchingTrackerMap,
+                                             matchersToUpdate, cycleTracker));
     // Matcher 2 and matcher3 must be reevaluated. Matcher 1 might, but does not need to be.
     EXPECT_EQ(matchersToUpdate[0], UPDATE_REPLACE);
     EXPECT_EQ(matchersToUpdate[1], UPDATE_REPLACE);
@@ -330,47 +335,48 @@
     *newConfig.add_atom_matcher() = combination1;
 
     set<int> newTagIds;
-    unordered_map<int64_t, int> newLogTrackerMap;
-    vector<sp<LogMatchingTracker>> newAtomMatchers;
-    EXPECT_TRUE(updateLogTrackers(newConfig, uidMap, oldLogTrackerMap, oldAtomMatchers, newTagIds,
-                                  newLogTrackerMap, newAtomMatchers));
+    unordered_map<int64_t, int> newAtomMatchingTrackerMap;
+    vector<sp<AtomMatchingTracker>> newAtomMatchingTrackers;
+    EXPECT_TRUE(updateAtomTrackers(newConfig, uidMap, oldAtomMatchingTrackerMap,
+                                   oldAtomMatchingTrackers, newTagIds, newAtomMatchingTrackerMap,
+                                   newAtomMatchingTrackers));
 
     ASSERT_EQ(newTagIds.size(), 3);
     EXPECT_EQ(newTagIds.count(10), 1);
     EXPECT_EQ(newTagIds.count(111), 1);
     EXPECT_EQ(newTagIds.count(13), 1);
 
-    ASSERT_EQ(newLogTrackerMap.size(), 6);
-    EXPECT_EQ(newLogTrackerMap.at(combination3Id), 0);
-    EXPECT_EQ(newLogTrackerMap.at(simple2Id), 1);
-    EXPECT_EQ(newLogTrackerMap.at(combination2Id), 2);
-    EXPECT_EQ(newLogTrackerMap.at(simple1Id), 3);
-    EXPECT_EQ(newLogTrackerMap.at(simple4Id), 4);
-    EXPECT_EQ(newLogTrackerMap.at(combination1Id), 5);
+    ASSERT_EQ(newAtomMatchingTrackerMap.size(), 6);
+    EXPECT_EQ(newAtomMatchingTrackerMap.at(combination3Id), 0);
+    EXPECT_EQ(newAtomMatchingTrackerMap.at(simple2Id), 1);
+    EXPECT_EQ(newAtomMatchingTrackerMap.at(combination2Id), 2);
+    EXPECT_EQ(newAtomMatchingTrackerMap.at(simple1Id), 3);
+    EXPECT_EQ(newAtomMatchingTrackerMap.at(simple4Id), 4);
+    EXPECT_EQ(newAtomMatchingTrackerMap.at(combination1Id), 5);
 
-    ASSERT_EQ(newAtomMatchers.size(), 6);
+    ASSERT_EQ(newAtomMatchingTrackers.size(), 6);
     // Make sure all atom matchers are initialized:
-    for (const sp<LogMatchingTracker>& tracker : newAtomMatchers) {
+    for (const sp<AtomMatchingTracker>& tracker : newAtomMatchingTrackers) {
         EXPECT_TRUE(tracker->mInitialized);
     }
     // Make sure preserved atom matchers are the same.
-    EXPECT_EQ(oldAtomMatchers[oldLogTrackerMap.at(simple1Id)],
-              newAtomMatchers[newLogTrackerMap.at(simple1Id)]);
-    EXPECT_EQ(oldAtomMatchers[oldLogTrackerMap.at(combination1Id)],
-              newAtomMatchers[newLogTrackerMap.at(combination1Id)]);
+    EXPECT_EQ(oldAtomMatchingTrackers[oldAtomMatchingTrackerMap.at(simple1Id)],
+              newAtomMatchingTrackers[newAtomMatchingTrackerMap.at(simple1Id)]);
+    EXPECT_EQ(oldAtomMatchingTrackers[oldAtomMatchingTrackerMap.at(combination1Id)],
+              newAtomMatchingTrackers[newAtomMatchingTrackerMap.at(combination1Id)]);
     // Make sure replaced matchers are different.
-    EXPECT_NE(oldAtomMatchers[oldLogTrackerMap.at(simple2Id)],
-              newAtomMatchers[newLogTrackerMap.at(simple2Id)]);
-    EXPECT_NE(oldAtomMatchers[oldLogTrackerMap.at(combination2Id)],
-              newAtomMatchers[newLogTrackerMap.at(combination2Id)]);
+    EXPECT_NE(oldAtomMatchingTrackers[oldAtomMatchingTrackerMap.at(simple2Id)],
+              newAtomMatchingTrackers[newAtomMatchingTrackerMap.at(simple2Id)]);
+    EXPECT_NE(oldAtomMatchingTrackers[oldAtomMatchingTrackerMap.at(combination2Id)],
+              newAtomMatchingTrackers[newAtomMatchingTrackerMap.at(combination2Id)]);
 
     // Validation, make sure the matchers have the proper ids. Could do more checks here.
-    EXPECT_EQ(newAtomMatchers[0]->getId(), combination3Id);
-    EXPECT_EQ(newAtomMatchers[1]->getId(), simple2Id);
-    EXPECT_EQ(newAtomMatchers[2]->getId(), combination2Id);
-    EXPECT_EQ(newAtomMatchers[3]->getId(), simple1Id);
-    EXPECT_EQ(newAtomMatchers[4]->getId(), simple4Id);
-    EXPECT_EQ(newAtomMatchers[5]->getId(), combination1Id);
+    EXPECT_EQ(newAtomMatchingTrackers[0]->getId(), combination3Id);
+    EXPECT_EQ(newAtomMatchingTrackers[1]->getId(), simple2Id);
+    EXPECT_EQ(newAtomMatchingTrackers[2]->getId(), combination2Id);
+    EXPECT_EQ(newAtomMatchingTrackers[3]->getId(), simple1Id);
+    EXPECT_EQ(newAtomMatchingTrackers[4]->getId(), simple4Id);
+    EXPECT_EQ(newAtomMatchingTrackers[5]->getId(), combination1Id);
 }
 
 }  // namespace statsd
diff --git a/cmds/statsd/tests/metrics/parsing_utils/metrics_manager_util_test.cpp b/cmds/statsd/tests/metrics/parsing_utils/metrics_manager_util_test.cpp
index 4e97eaf..d6db4c1 100644
--- a/cmds/statsd/tests/metrics/parsing_utils/metrics_manager_util_test.cpp
+++ b/cmds/statsd/tests/metrics/parsing_utils/metrics_manager_util_test.cpp
@@ -24,7 +24,7 @@
 
 #include "frameworks/base/cmds/statsd/src/statsd_config.pb.h"
 #include "src/condition/ConditionTracker.h"
-#include "src/matchers/LogMatchingTracker.h"
+#include "src/matchers/AtomMatchingTracker.h"
 #include "src/metrics/CountMetricProducer.h"
 #include "src/metrics/GaugeMetricProducer.h"
 #include "src/metrics/MetricProducer.h"
@@ -383,7 +383,7 @@
     sp<AlarmMonitor> periodicAlarmMonitor;
     StatsdConfig config = buildConfigWithDifferentPredicates();
     set<int> allTagIds;
-    vector<sp<LogMatchingTracker>> allAtomMatchers;
+    vector<sp<AtomMatchingTracker>> allAtomMatchingTrackers;
     unordered_map<int64_t, int> logTrackerMap;
     vector<sp<ConditionTracker>> allConditionTrackers;
     vector<sp<MetricProducer>> allMetricProducers;
@@ -400,7 +400,7 @@
 
     EXPECT_TRUE(initStatsdConfig(
             kConfigKey, config, uidMap, pullerManager, anomalyAlarmMonitor, periodicAlarmMonitor,
-            timeBaseSec, timeBaseSec, allTagIds, allAtomMatchers, logTrackerMap,
+            timeBaseSec, timeBaseSec, allTagIds, allAtomMatchingTrackers, logTrackerMap,
             allConditionTrackers, allMetricProducers, allAnomalyTrackers, allAlarmTrackers,
             conditionToMetricMap, trackerToMetricMap, trackerToConditionMap,
             activationAtomTrackerToMetricMap, deactivationAtomTrackerToMetricMap, alertTrackerMap,
@@ -432,7 +432,7 @@
     sp<AlarmMonitor> periodicAlarmMonitor;
     StatsdConfig config = buildGoodConfig();
     set<int> allTagIds;
-    vector<sp<LogMatchingTracker>> allAtomMatchers;
+    vector<sp<AtomMatchingTracker>> allAtomMatchingTrackers;
     unordered_map<int64_t, int> logTrackerMap;
     vector<sp<ConditionTracker>> allConditionTrackers;
     vector<sp<MetricProducer>> allMetricProducers;
@@ -449,7 +449,7 @@
 
     EXPECT_TRUE(initStatsdConfig(
             kConfigKey, config, uidMap, pullerManager, anomalyAlarmMonitor, periodicAlarmMonitor,
-            timeBaseSec, timeBaseSec, allTagIds, allAtomMatchers, logTrackerMap,
+            timeBaseSec, timeBaseSec, allTagIds, allAtomMatchingTrackers, logTrackerMap,
             allConditionTrackers, allMetricProducers, allAnomalyTrackers, allAlarmTrackers,
             conditionToMetricMap, trackerToMetricMap, trackerToConditionMap,
             activationAtomTrackerToMetricMap, deactivationAtomTrackerToMetricMap, alertTrackerMap,
@@ -469,7 +469,7 @@
     sp<AlarmMonitor> periodicAlarmMonitor;
     StatsdConfig config = buildDimensionMetricsWithMultiTags();
     set<int> allTagIds;
-    vector<sp<LogMatchingTracker>> allAtomMatchers;
+    vector<sp<AtomMatchingTracker>> allAtomMatchingTrackers;
     unordered_map<int64_t, int> logTrackerMap;
     vector<sp<ConditionTracker>> allConditionTrackers;
     vector<sp<MetricProducer>> allMetricProducers;
@@ -486,7 +486,7 @@
 
     EXPECT_FALSE(initStatsdConfig(
             kConfigKey, config, uidMap, pullerManager, anomalyAlarmMonitor, periodicAlarmMonitor,
-            timeBaseSec, timeBaseSec, allTagIds, allAtomMatchers, logTrackerMap,
+            timeBaseSec, timeBaseSec, allTagIds, allAtomMatchingTrackers, logTrackerMap,
             allConditionTrackers, allMetricProducers, allAnomalyTrackers, allAlarmTrackers,
             conditionToMetricMap, trackerToMetricMap, trackerToConditionMap,
             activationAtomTrackerToMetricMap, deactivationAtomTrackerToMetricMap, alertTrackerMap,
@@ -500,7 +500,7 @@
     sp<AlarmMonitor> periodicAlarmMonitor;
     StatsdConfig config = buildCircleMatchers();
     set<int> allTagIds;
-    vector<sp<LogMatchingTracker>> allAtomMatchers;
+    vector<sp<AtomMatchingTracker>> allAtomMatchingTrackers;
     unordered_map<int64_t, int> logTrackerMap;
     vector<sp<ConditionTracker>> allConditionTrackers;
     vector<sp<MetricProducer>> allMetricProducers;
@@ -517,7 +517,7 @@
 
     EXPECT_FALSE(initStatsdConfig(
             kConfigKey, config, uidMap, pullerManager, anomalyAlarmMonitor, periodicAlarmMonitor,
-            timeBaseSec, timeBaseSec, allTagIds, allAtomMatchers, logTrackerMap,
+            timeBaseSec, timeBaseSec, allTagIds, allAtomMatchingTrackers, logTrackerMap,
             allConditionTrackers, allMetricProducers, allAnomalyTrackers, allAlarmTrackers,
             conditionToMetricMap, trackerToMetricMap, trackerToConditionMap,
             activationAtomTrackerToMetricMap, deactivationAtomTrackerToMetricMap, alertTrackerMap,
@@ -531,7 +531,7 @@
     sp<AlarmMonitor> periodicAlarmMonitor;
     StatsdConfig config = buildMissingMatchers();
     set<int> allTagIds;
-    vector<sp<LogMatchingTracker>> allAtomMatchers;
+    vector<sp<AtomMatchingTracker>> allAtomMatchingTrackers;
     unordered_map<int64_t, int> logTrackerMap;
     vector<sp<ConditionTracker>> allConditionTrackers;
     vector<sp<MetricProducer>> allMetricProducers;
@@ -547,7 +547,7 @@
     std::set<int64_t> noReportMetricIds;
     EXPECT_FALSE(initStatsdConfig(
             kConfigKey, config, uidMap, pullerManager, anomalyAlarmMonitor, periodicAlarmMonitor,
-            timeBaseSec, timeBaseSec, allTagIds, allAtomMatchers, logTrackerMap,
+            timeBaseSec, timeBaseSec, allTagIds, allAtomMatchingTrackers, logTrackerMap,
             allConditionTrackers, allMetricProducers, allAnomalyTrackers, allAlarmTrackers,
             conditionToMetricMap, trackerToMetricMap, trackerToConditionMap,
             activationAtomTrackerToMetricMap, deactivationAtomTrackerToMetricMap, alertTrackerMap,
@@ -561,7 +561,7 @@
     sp<AlarmMonitor> periodicAlarmMonitor;
     StatsdConfig config = buildMissingPredicate();
     set<int> allTagIds;
-    vector<sp<LogMatchingTracker>> allAtomMatchers;
+    vector<sp<AtomMatchingTracker>> allAtomMatchingTrackers;
     unordered_map<int64_t, int> logTrackerMap;
     vector<sp<ConditionTracker>> allConditionTrackers;
     vector<sp<MetricProducer>> allMetricProducers;
@@ -577,7 +577,7 @@
     std::set<int64_t> noReportMetricIds;
     EXPECT_FALSE(initStatsdConfig(
             kConfigKey, config, uidMap, pullerManager, anomalyAlarmMonitor, periodicAlarmMonitor,
-            timeBaseSec, timeBaseSec, allTagIds, allAtomMatchers, logTrackerMap,
+            timeBaseSec, timeBaseSec, allTagIds, allAtomMatchingTrackers, logTrackerMap,
             allConditionTrackers, allMetricProducers, allAnomalyTrackers, allAlarmTrackers,
             conditionToMetricMap, trackerToMetricMap, trackerToConditionMap,
             activationAtomTrackerToMetricMap, deactivationAtomTrackerToMetricMap, alertTrackerMap,
@@ -591,7 +591,7 @@
     sp<AlarmMonitor> periodicAlarmMonitor;
     StatsdConfig config = buildCirclePredicates();
     set<int> allTagIds;
-    vector<sp<LogMatchingTracker>> allAtomMatchers;
+    vector<sp<AtomMatchingTracker>> allAtomMatchingTrackers;
     unordered_map<int64_t, int> logTrackerMap;
     vector<sp<ConditionTracker>> allConditionTrackers;
     vector<sp<MetricProducer>> allMetricProducers;
@@ -608,7 +608,7 @@
 
     EXPECT_FALSE(initStatsdConfig(
             kConfigKey, config, uidMap, pullerManager, anomalyAlarmMonitor, periodicAlarmMonitor,
-            timeBaseSec, timeBaseSec, allTagIds, allAtomMatchers, logTrackerMap,
+            timeBaseSec, timeBaseSec, allTagIds, allAtomMatchingTrackers, logTrackerMap,
             allConditionTrackers, allMetricProducers, allAnomalyTrackers, allAlarmTrackers,
             conditionToMetricMap, trackerToMetricMap, trackerToConditionMap,
             activationAtomTrackerToMetricMap, deactivationAtomTrackerToMetricMap, alertTrackerMap,
@@ -622,7 +622,7 @@
     sp<AlarmMonitor> periodicAlarmMonitor;
     StatsdConfig config = buildAlertWithUnknownMetric();
     set<int> allTagIds;
-    vector<sp<LogMatchingTracker>> allAtomMatchers;
+    vector<sp<AtomMatchingTracker>> allAtomMatchingTrackers;
     unordered_map<int64_t, int> logTrackerMap;
     vector<sp<ConditionTracker>> allConditionTrackers;
     vector<sp<MetricProducer>> allMetricProducers;
@@ -639,21 +639,21 @@
 
     EXPECT_FALSE(initStatsdConfig(
             kConfigKey, config, uidMap, pullerManager, anomalyAlarmMonitor, periodicAlarmMonitor,
-            timeBaseSec, timeBaseSec, allTagIds, allAtomMatchers, logTrackerMap,
+            timeBaseSec, timeBaseSec, allTagIds, allAtomMatchingTrackers, logTrackerMap,
             allConditionTrackers, allMetricProducers, allAnomalyTrackers, allAlarmTrackers,
             conditionToMetricMap, trackerToMetricMap, trackerToConditionMap,
             activationAtomTrackerToMetricMap, deactivationAtomTrackerToMetricMap, alertTrackerMap,
             metricsWithActivation, noReportMetricIds));
 }
 
-TEST(MetricsManagerTest, TestCreateLogTrackerInvalidMatcher) {
+TEST(MetricsManagerTest, TestCreateAtomMatchingTrackerInvalidMatcher) {
     sp<UidMap> uidMap = new UidMap();
     AtomMatcher matcher;
     matcher.set_id(21);
-    EXPECT_EQ(createLogTracker(matcher, 0, uidMap), nullptr);
+    EXPECT_EQ(createAtomMatchingTracker(matcher, 0, uidMap), nullptr);
 }
 
-TEST(MetricsManagerTest, TestCreateLogTrackerSimple) {
+TEST(MetricsManagerTest, TestCreateAtomMatchingTrackerSimple) {
     int index = 1;
     int64_t id = 123;
     sp<UidMap> uidMap = new UidMap();
@@ -666,7 +666,7 @@
     simpleAtomMatcher->mutable_field_value_matcher(0)->set_eq_int(
             android::view::DisplayStateEnum::DISPLAY_STATE_ON);
 
-    sp<LogMatchingTracker> tracker = createLogTracker(matcher, index, uidMap);
+    sp<AtomMatchingTracker> tracker = createAtomMatchingTracker(matcher, index, uidMap);
     EXPECT_NE(tracker, nullptr);
 
     EXPECT_TRUE(tracker->mInitialized);
@@ -677,7 +677,7 @@
     EXPECT_EQ(atomIds.count(util::SCREEN_STATE_CHANGED), 1);
 }
 
-TEST(MetricsManagerTest, TestCreateLogTrackerCombination) {
+TEST(MetricsManagerTest, TestCreateAtomMatchingTrackerCombination) {
     int index = 1;
     int64_t id = 123;
     sp<UidMap> uidMap = new UidMap();
@@ -688,7 +688,7 @@
     combination->add_matcher(123);
     combination->add_matcher(223);
 
-    sp<LogMatchingTracker> tracker = createLogTracker(matcher, index, uidMap);
+    sp<AtomMatchingTracker> tracker = createAtomMatchingTracker(matcher, index, uidMap);
     EXPECT_NE(tracker, nullptr);
 
     // Combination matchers need to be initialized first.
diff --git a/cmds/statsd/tests/statsd_test_util.cpp b/cmds/statsd/tests/statsd_test_util.cpp
index 0be983f..1761d5d 100644
--- a/cmds/statsd/tests/statsd_test_util.cpp
+++ b/cmds/statsd/tests/statsd_test_util.cpp
@@ -16,7 +16,7 @@
 
 #include <aidl/android/util/StatsEventParcel.h>
 
-#include "matchers/SimpleLogMatchingTracker.h"
+#include "matchers/SimpleAtomMatchingTracker.h"
 #include "stats_event.h"
 
 using aidl::android::util::StatsEventParcel;
@@ -1008,8 +1008,8 @@
     }
     uint64_t matcherHash = 0x12345678;
     int64_t matcherId = 678;
-    return new EventMatcherWizard({new SimpleLogMatchingTracker(matcherId, matcherIndex,
-                                                                matcherHash, atomMatcher, uidMap)});
+    return new EventMatcherWizard({new SimpleAtomMatchingTracker(
+            matcherId, matcherIndex, matcherHash, atomMatcher, uidMap)});
 }
 
 void ValidateWakelockAttributionUidAndTagDimension(const DimensionsValue& value, const int atomId,