blob: 31c84c7537ac0250f066ffa11d840375d2eb20a8 [file] [log] [blame]
/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// The bootstat command provides options to persist boot events with the current
// timestamp, dump the persisted events, and log all events to EventLog to be
// uploaded to Android log storage via Tron.
#include <getopt.h>
#include <unistd.h>
#include <cstddef>
#include <cstdio>
#include <map>
#include <memory>
#include <string>
#include <android-base/logging.h>
#include <cutils/properties.h>
#include <log/log.h>
#include "boot_event_record_store.h"
#include "event_log_list_builder.h"
namespace {
// Builds an EventLog buffer named |event| containing |data| and writes
// the log into the Tron histogram logs.
void LogBootEvent(const std::string& event, int32_t data) {
LOG(INFO) << "Logging boot metric: " << event << " " << data;
EventLogListBuilder log_builder;
log_builder.Append(event);
log_builder.Append(data);
std::unique_ptr<uint8_t[]> log;
size_t size;
log_builder.Release(&log, &size);
android_bWriteLog(HISTOGRAM_LOG_TAG, log.get(), size);
}
// Scans the boot event record store for record files and logs each boot event
// via EventLog.
void LogBootEvents() {
BootEventRecordStore boot_event_store;
auto events = boot_event_store.GetAllBootEvents();
for (auto i = events.cbegin(); i != events.cend(); ++i) {
LogBootEvent(i->first, i->second);
}
}
void PrintBootEvents() {
printf("Boot events:\n");
printf("------------\n");
BootEventRecordStore boot_event_store;
auto events = boot_event_store.GetAllBootEvents();
for (auto i = events.cbegin(); i != events.cend(); ++i) {
printf("%s\t%d\n", i->first.c_str(), i->second);
}
}
void ShowHelp(const char *cmd) {
fprintf(stderr, "Usage: %s [options]\n", cmd);
fprintf(stderr,
"options include:\n"
" -h, --help Show this help\n"
" -l, --log Log all metrics to logstorage\n"
" -p, --print Dump the boot event records to the console\n"
" -r, --record Record the timestamp of a named boot event\n"
" --record_boot_reason Record the reason why the device booted\n");
}
// Constructs a readable, printable string from the givencommand line
// arguments.
std::string GetCommandLine(int argc, char **argv) {
std::string cmd;
for (int i = 0; i < argc; ++i) {
cmd += argv[i];
cmd += " ";
}
return cmd;
}
// Convenience wrapper over the property API that returns an
// std::string.
std::string GetProperty(const char* key) {
std::vector<char> temp(PROPERTY_VALUE_MAX);
const int len = property_get(key, &temp[0], nullptr);
if (len < 0) {
return "";
}
return std::string(&temp[0], len);
}
// A mapping from boot reason string, as read from the ro.boot.bootreason
// system property, to a unique integer ID. Viewers of log data dashboards for
// the boot_reason metric may refer to this mapping to discern the histogram
// values.
const std::map<std::string, int> kBootReasonMap = {
{"normal", 0},
{"recovery", 1},
{"reboot", 2},
{"PowerKey", 3},
{"hard_reset", 4},
{"kernel_panic", 5},
{"rpm_err", 6},
{"hw_reset", 7},
{"tz_err", 8},
{"adsp_err", 9},
{"modem_err", 10},
{"mba_err", 11},
{"Watchdog", 12},
{"Panic", 13},
};
// Converts a string value representing the reason the system booted to an
// integer representation. This is necessary for logging the boot_reason metric
// via Tron, which does not accept non-integer buckets in histograms.
int32_t BootReasonStrToEnum(const std::string& boot_reason) {
static const int32_t kUnknownBootReason = -1;
auto mapping = kBootReasonMap.find(boot_reason);
if (mapping != kBootReasonMap.end()) {
return mapping->second;
}
LOG(INFO) << "Unknown boot reason: " << boot_reason;
return kUnknownBootReason;
}
// Records the boot_reason metric by querying the ro.boot.bootreason system
// property.
void RecordBootReason() {
int32_t boot_reason = BootReasonStrToEnum(GetProperty("ro.boot.bootreason"));
BootEventRecordStore boot_event_store;
boot_event_store.AddBootEventWithValue("boot_reason", boot_reason);
}
} // namespace
int main(int argc, char **argv) {
android::base::InitLogging(argv);
const std::string cmd_line = GetCommandLine(argc, argv);
LOG(INFO) << "Service started: " << cmd_line;
int option_index = 0;
static const char boot_reason_str[] = "record_boot_reason";
static const struct option long_options[] = {
{ "help", no_argument, NULL, 'h' },
{ "log", no_argument, NULL, 'l' },
{ "print", no_argument, NULL, 'p' },
{ "record", required_argument, NULL, 'r' },
{ boot_reason_str, no_argument, NULL, 0 },
{ NULL, 0, NULL, 0 }
};
int opt = 0;
while ((opt = getopt_long(argc, argv, "hlpr:", long_options, &option_index)) != -1) {
switch (opt) {
// This case handles long options which have no single-character mapping.
case 0: {
const std::string option_name = long_options[option_index].name;
if (option_name == boot_reason_str) {
RecordBootReason();
} else {
LOG(ERROR) << "Invalid option: " << option_name;
}
break;
}
case 'h': {
ShowHelp(argv[0]);
break;
}
case 'l': {
LogBootEvents();
break;
}
case 'p': {
PrintBootEvents();
break;
}
case 'r': {
// |optarg| is an external variable set by getopt representing
// the option argument.
const char* event = optarg;
BootEventRecordStore boot_event_store;
boot_event_store.AddBootEvent(event);
break;
}
default: {
DCHECK_EQ(opt, '?');
// |optopt| is an external variable set by getopt representing
// the value of the invalid option.
LOG(ERROR) << "Invalid option: " << optopt;
ShowHelp(argv[0]);
return EXIT_FAILURE;
}
}
}
return 0;
}