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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.HashMap;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Parse the events logs. </p>
*/
public class EventsLogParser implements IParser {
// 09-18 23:56:19.376 1140 1221 I sysui_multi_action:
// [319,51,321,50,322,190,325,670,757,761,758,7,759,1,806,com.google.android.calculator,871,
// com.android.calculator2.Calculator,905,0,945,41]
private static final Pattern SYSUI_TRANSITION_INFO_PATTERN = Pattern.compile(
"^(?<date>[0-9-]*)\\s+(?<time>[0-9:.]*)\\s+\\d+\\s+\\d+ I sysui_multi_action:"
+ " \\[(?<transitioninfo>.*)\\]$");
// 08-21 17:53:53.876 1053 2135 I sysui_latency: [1,50]
private static final Pattern ACTION_LATENCY = Pattern.compile("^(?<date>[0-9-]*)\\s+"
+ "(?<time>[0-9:.]*)\\s+\\d+\\s+\\d+ I sysui_latency: \\[(?<action>.*),"
+ "(?<delay>.*)\\]$");
private static final String DATE = "date";
private static final String TIME = "time";
private static final String TRANSITION_INFO = "transitioninfo";
private static final String PACKAGE_KEY = "806";
private static final String ACTIVITY_KEY = "871";
private static final String TRANSITION_DELAY_KEY = "319";
private static final String STARTING_WINDOW_DELAY_KEY = "321";
private static final String COLD_LAUNCH_KEY = "945";
@Override
public IItem parse(List<String> lines) {
throw new UnsupportedOperationException("Method has not been implemented in lieu"
+ " of others");
}
/**
* Parse the transition delay information from the events log.
* @param input
* @return list of transition delay items.
* @throws IOException
*/
public List<TransitionDelayItem> parseTransitionDelayInfo(BufferedReader input)
throws IOException {
List<TransitionDelayItem> transitionDelayItems = new ArrayList<TransitionDelayItem>();
String line;
Matcher match = null;
while ((line = input.readLine()) != null) {
if ((match = matches(SYSUI_TRANSITION_INFO_PATTERN, line)) != null) {
Map<String, String> transitionInfoMap = getTransitionInfoMap(
match.group(TRANSITION_INFO));
if (transitionInfoMap.containsKey(TRANSITION_DELAY_KEY)) {
TransitionDelayItem delayItem = new TransitionDelayItem();
if (null != transitionInfoMap.get(PACKAGE_KEY)
&& null != transitionInfoMap.get(ACTIVITY_KEY)
&& null != transitionInfoMap.get(TRANSITION_DELAY_KEY)) {
delayItem.setComponentName(transitionInfoMap.get(PACKAGE_KEY) + "/"
+ transitionInfoMap.get(ACTIVITY_KEY));
delayItem.setTransitionDelay(Long.parseLong(transitionInfoMap
.get(TRANSITION_DELAY_KEY)));
delayItem.setDateTime(String.format("%s %s", match.group(DATE),
match.group(TIME)));
}
if (transitionInfoMap.containsKey(COLD_LAUNCH_KEY)) {
if (null != transitionInfoMap.get(STARTING_WINDOW_DELAY_KEY)) {
delayItem.setStartingWindowDelay(Long.parseLong(transitionInfoMap
.get(STARTING_WINDOW_DELAY_KEY)));
}
}
transitionDelayItems.add(delayItem);
}
}
}
return transitionDelayItems;
}
/**
* Split the transition info string in to key, values and return a map.
* @param transitionInfo transition info map in hey value format.
* @return
*/
public Map<String, String> getTransitionInfoMap(String transitionInfo) {
String[] transitionSplit = transitionInfo.split(",");
Map<String, String> transitionInfoMap = new HashMap<>();
if (transitionSplit.length % 2 == 0) {
for (int i = 0; i < transitionSplit.length; i = i + 2) {
transitionInfoMap.put(transitionSplit[i], transitionSplit[i + 1]);
}
}
return transitionInfoMap;
}
/**
* 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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