| /* |
| * Copyright (C) 2013 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.TopItem; |
| import com.android.loganalysis.util.ArrayUtil; |
| |
| import java.util.List; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| /** |
| * A {@link IParser} to handle the output of the top command output. |
| * <p> |
| * The parser only record the last top entry if multiple entries are printed by the top command. It |
| * only parses the total cpu usage. |
| * </p> |
| */ |
| public class TopParser implements IParser { |
| |
| /** |
| * Match a valid cpu ticks line, such as: |
| * "User 5 + Nice 0 + Sys 14 + Idle 207 + IOW 0 + IRQ 0 + SIRQ 0 = 226" |
| */ |
| private static final Pattern TICKS_PAT = Pattern.compile( |
| "User (\\d+) \\+ Nice (\\d+) \\+ Sys (\\d+) \\+ Idle (\\d+) \\+ IOW (\\d+) \\+ " + |
| "IRQ (\\d+) \\+ SIRQ (\\d+) = (\\d+)"); |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public TopItem parse(List<String> lines) { |
| final String text = ArrayUtil.join("\n", lines).trim(); |
| if ("".equals(text)) { |
| return null; |
| } |
| |
| TopItem item = new TopItem(); |
| item.setText(text); |
| |
| for (String line : lines) { |
| Matcher m = TICKS_PAT.matcher(line); |
| if (m.matches()) { |
| item.setUser(Integer.parseInt(m.group(1))); |
| item.setNice(Integer.parseInt(m.group(2))); |
| item.setSystem(Integer.parseInt(m.group(3))); |
| item.setIdle(Integer.parseInt(m.group(4))); |
| item.setIow(Integer.parseInt(m.group(5))); |
| item.setIrq(Integer.parseInt(m.group(6))); |
| item.setSirq(Integer.parseInt(m.group(7))); |
| item.setTotal(Integer.parseInt(m.group(8))); |
| } |
| } |
| return item; |
| } |
| } |