1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package com.android.loganalysis.item; 17 18 import org.json.JSONArray; 19 import org.json.JSONException; 20 import org.json.JSONObject; 21 22 import java.util.HashMap; 23 import java.util.Map; 24 import java.util.Set; 25 26 /** 27 * An {@link IItem} used to cpuinfo. 28 */ 29 public class CpuInfoItem implements IItem { 30 /** Constant for JSON output */ 31 public static final String PROCESSES_KEY = "processes"; 32 /** Constant for JSON output */ 33 public static final String PID_KEY = "pid"; 34 /** Constant for JSON output */ 35 public static final String PERCENT_KEY = "percent"; 36 /** Constant for JSON output */ 37 public static final String NAME_KEY = "name"; 38 39 private Map<Integer, Row> mRows = new HashMap<Integer, Row>(); 40 41 private static class Row { 42 public double percent; 43 public String name; 44 } 45 46 /** 47 * {@inheritDoc} 48 */ 49 @Override merge(IItem other)50 public IItem merge(IItem other) throws ConflictingItemException { 51 throw new ConflictingItemException("CpuInfo items cannot be merged"); 52 } 53 54 /** 55 * {@inheritDoc} 56 */ 57 @Override isConsistent(IItem other)58 public boolean isConsistent(IItem other) { 59 return false; 60 } 61 62 /** 63 * {@inheritDoc} 64 */ 65 @Override toJson()66 public JSONObject toJson() { 67 JSONObject object = new JSONObject(); 68 JSONArray processes = new JSONArray(); 69 for (int pid : getPids()) { 70 JSONObject proc = new JSONObject(); 71 try { 72 proc.put(PID_KEY, pid); 73 proc.put(PERCENT_KEY, getPercent(pid)); 74 proc.put(NAME_KEY, getName(pid)); 75 processes.put(proc); 76 } catch (JSONException e) { 77 // ignore 78 } 79 } 80 81 try { 82 object.put(PROCESSES_KEY, processes); 83 } catch (JSONException e) { 84 // ignore 85 } 86 return object; 87 } 88 89 /** 90 * Get a set of PIDs seen in the cpuinfo output. 91 */ getPids()92 public Set<Integer> getPids() { 93 return mRows.keySet(); 94 } 95 96 /** 97 * Add a row from the cpuinfo output to the {@link CpuInfoItem}. 98 * 99 * @param pid The PID from the output 100 * @param percent The percentage of CPU usage by the process 101 * @param name The process name 102 */ addRow(int pid, double percent, String name)103 public void addRow(int pid, double percent, String name) { 104 Row row = new Row(); 105 row.percent = percent; 106 row.name = name; 107 mRows.put(pid, row); 108 } 109 110 /** 111 * Get the percentage of CPU usage by a given PID. 112 */ getPercent(int pid)113 public double getPercent(int pid) { 114 return mRows.get(pid).percent; 115 } 116 117 /** 118 * Get the process name for a given PID. 119 */ getName(int pid)120 public String getName(int pid) { 121 return mRows.get(pid).name; 122 } 123 } 124