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/*
* 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.
*/
package com.android.loganalysis.parser;
import com.android.loganalysis.item.IItem;
import com.android.loganalysis.item.LatencyItem;
import com.android.loganalysis.item.TransitionDelayItem;
import java.io.BufferedReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Parse the events logs. </p>
*/
public class EventsLogParser implements IParser {
// 08-21 17:53:53.876 1053 2135
private static final String EVENTS_PREFIX = "^\\d{2}-\\d{2} \\d{2}:\\d{2}"
+ ":\\d{2}.\\d{3}\\s+\\d+\\s+\\d+ ";
// 08-21 17:53:53.876 1053 2135 I am_restart_activity:
// [0,188098346,127,com.google.android.gm/.ConversationListActivityGmail]
private static final Pattern ACTIVITY_RESTART = Pattern.compile(
String.format("%s%s", EVENTS_PREFIX, "I am_restart_activity: "
+ "\\[\\d+\\,\\d+\\,\\d+\\,(?<componentname>.*)\\]$"));
// 08-21 17:53:53.876 1053 2135 I am_resume_activity:
// [0,228277756,132,com.google.android.gm/.ConversationListActivityGmail]
private static final Pattern ACTIVITY_RESUME = Pattern.compile(
String.format("%s%s", EVENTS_PREFIX, "I am_resume_activity: "
+ "\\[\\d+\\,\\d+\\,\\d+\\,(?<componentname>.*)\\]$"));
// 08-21 17:53:53.876 1053 2135 I sysui_action: [321,74]
private static final Pattern STARTING_WINDOW_DELAY = Pattern.compile(
String.format("%s%s", EVENTS_PREFIX, "I sysui_action: \\[321,"
+ "(?<startdelay>.*)\\]$"));
// 08-21 17:53:53.876 1053 2135 I sysui_action: [319,99]
private static final Pattern TRANSITION_DELAY = Pattern.compile(
String.format("%s%s", EVENTS_PREFIX, "I sysui_action: \\[319,"
+ "(?<transitdelay>.*)\\]$"));
// 08-21 17:53:53.876 1053 2135 I sysui_latency: [1,50]
private static final Pattern ACTION_LATENCY = Pattern.compile(
String.format("%s%s", EVENTS_PREFIX, "I sysui_latency: \\[(?<action>.*),"
+ "(?<delay>.*)\\]$"));
@Override
public IItem parse(List<String> lines) {
throw new UnsupportedOperationException("Method has not been implemented in lieu"
+ " of others");
}
/**
* Method to parse the transition delay information from the events log
*
* @param input
* @return
* @throws IOException
*/
public List<TransitionDelayItem> parseTransitionDelayInfo(BufferedReader input)
throws IOException {
List<TransitionDelayItem> transitionDelayItems = new ArrayList<TransitionDelayItem>();
String line;
List<String> componentNameStack = new ArrayList<String>();
boolean isRecentStartWindowDelay = false;
while ((line = input.readLine()) != null) {
Matcher match = null;
if ((match = matches(ACTIVITY_RESTART, line)) != null ||
((match = matches(ACTIVITY_RESUME, line)) != null)) {
componentNameStack.add(match.group("componentname"));
isRecentStartWindowDelay = false;
} else if (((match = matches(STARTING_WINDOW_DELAY, line)) != null)
&& (componentNameStack.size() > 0)) {
TransitionDelayItem delayItem = new TransitionDelayItem();
delayItem.setComponentName(
componentNameStack.remove(componentNameStack.size() - 1));
delayItem.setStartingWindowDelay(Long.parseLong(match.group("startdelay")));
delayItem.setTransitionDelay(-1);
transitionDelayItems.add(delayItem);
isRecentStartWindowDelay = true;
} else if (((match = matches(TRANSITION_DELAY, line)) != null)
&& (componentNameStack.size() > 0) && !isRecentStartWindowDelay) {
TransitionDelayItem delayItem = new TransitionDelayItem();
delayItem.setComponentName(
componentNameStack.remove(componentNameStack.size() - 1));
delayItem.setTransitionDelay(Long.parseLong(match.group("transitdelay")));
delayItem.setStartingWindowDelay(-1);
transitionDelayItems.add(delayItem);
}
}
return transitionDelayItems;
}
/**
* Method to parse the latency information from the events log
*
* @param input
* @return
* @throws IOException
*/
public List<LatencyItem> parseLatencyInfo(BufferedReader input) throws IOException {
List<LatencyItem> latencyItems = new ArrayList<LatencyItem>();
String line;
while ((line = input.readLine()) != null) {
Matcher match = null;
if (((match = matches(ACTION_LATENCY, line))) != null) {
LatencyItem latencyItem = new LatencyItem();
latencyItem.setActionId(Integer.parseInt(match.group("action")));
latencyItem.setDelay(Long.parseLong(match.group("delay")));
latencyItems.add(latencyItem);
}
}
return latencyItems;
}
/**
* Checks whether {@code line} matches the given {@link Pattern}.
*
* @return The resulting {@link Matcher} obtained by matching the {@code line} against
* {@code pattern}, or null if the {@code line} does not match.
*/
private static Matcher matches(Pattern pattern, String line) {
Matcher ret = pattern.matcher(line);
return ret.matches() ? ret : null;
}
}
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