blob: cdfc2d5fda61888be9c574ececee10470eb381bc [file] [log] [blame]
/*
* Copyright (C) 2018 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.
*/
package libcore.util;
import libcore.timezone.TimeZoneDataFiles;
import libcore.timezone.TzDataSetVersion;
import libcore.timezone.TzDataSetVersion.TzDataSetException;
import libcore.timezone.ZoneInfoDB;
import java.io.File;
import java.io.IOException;
/**
* Provides APIs for obtaining metadata for the managed core library and lower-level
* components like bionic and the runtime.
*
* @hide
*/
@libcore.api.CorePlatformApi
public class CoreLibraryDebug {
private static final String CORE_LIBRARY_TIMEZONE_DEBUG_PREFIX = "core_library.timezone.";
private CoreLibraryDebug() {}
/**
* Returns information about the Core Library for debugging.
*/
@libcore.api.CorePlatformApi
public static DebugInfo getDebugInfo() {
DebugInfo debugInfo = new DebugInfo();
populateTimeZoneFilesInfo(debugInfo);
populateTimeZoneLibraryReportedVersion(debugInfo);
return debugInfo;
}
/**
* Adds information about the available time zone file sets on the device to the supplied
* {@link DebugInfo}. See also {@link #populateTimeZoneLibraryReportedVersion(DebugInfo)} for a method
* that provides information about the time zone files actually in use by libraries.
*/
private static void populateTimeZoneFilesInfo(DebugInfo debugInfo) {
String debugKeyPrefix = CORE_LIBRARY_TIMEZONE_DEBUG_PREFIX + "source.";
// Time zone module tz data set.
{
String tzDataModulePrefix = debugKeyPrefix + "tzdata_module_";
String versionFileName =
TimeZoneDataFiles.getTimeZoneModuleFile(TzDataSetVersion.DEFAULT_FILE_NAME);
addTzDataSetVersionDebugInfo(versionFileName, tzDataModulePrefix, debugInfo);
}
// /system tz data set.
{
String systemDirPrefix = debugKeyPrefix + "system_";
String versionFileName =
TimeZoneDataFiles.getSystemTimeZoneFile(TzDataSetVersion.DEFAULT_FILE_NAME);
addTzDataSetVersionDebugInfo(versionFileName, systemDirPrefix, debugInfo);
}
}
private static void addTzDataSetVersionDebugInfo(String tzDataSetVersionFileName,
String debugKeyPrefix, DebugInfo debugInfo) {
File file = new File(tzDataSetVersionFileName);
String statusKey = debugKeyPrefix + "status";
if (file.exists()) {
try {
TzDataSetVersion tzDataSetVersion =
TzDataSetVersion.readFromFile(file);
String formatVersionString = tzDataSetVersion.formatMajorVersion + "."
+ tzDataSetVersion.formatMinorVersion;
debugInfo.addStringEntry(statusKey, "OK")
.addStringEntry(debugKeyPrefix + "formatVersion", formatVersionString)
.addStringEntry(debugKeyPrefix + "rulesVersion",
tzDataSetVersion.rulesVersion)
.addStringEntry(debugKeyPrefix + "revision",
tzDataSetVersion.revision);
} catch (IOException | TzDataSetException e) {
debugInfo.addStringEntry(statusKey, "ERROR");
debugInfo.addStringEntry(debugKeyPrefix + "exception_class", e.getClass().getName());
debugInfo.addStringEntry(debugKeyPrefix + "exception_msg", e.getMessage());
System.logE("Error reading " + file, e);
}
} else {
debugInfo.addStringEntry(statusKey, "NOT_FOUND");
}
}
private static void populateTimeZoneLibraryReportedVersion(DebugInfo debugInfo) {
String debugKeyPrefix = CORE_LIBRARY_TIMEZONE_DEBUG_PREFIX + "lib.";
debugInfo.addStringEntry(
debugKeyPrefix + "icu4j.tzdb_version",
android.icu.util.TimeZone.getTZDataVersion());
debugInfo.addStringEntry(
debugKeyPrefix + "libcore.tzdb_version",
ZoneInfoDB.getInstance().getVersion());
debugInfo.addStringEntry(
debugKeyPrefix + "icu4c.tzdb_version",
libcore.icu.ICU.getTZDataVersion());
}
}