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19 package org.apache.hadoop.hbase.monitoring;
20
21 import org.apache.hadoop.hbase.classification.InterfaceAudience;
22 import org.codehaus.jackson.map.ObjectMapper;
23
24 import java.io.IOException;
25 import java.util.HashMap;
26 import java.util.Map;
27
28 @InterfaceAudience.Private
29 class MonitoredTaskImpl implements MonitoredTask {
30 private long startTime;
31 private long statusTime;
32 private long stateTime;
33
34 private volatile String status;
35 private volatile String description;
36
37 protected volatile State state = State.RUNNING;
38
39 private static final ObjectMapper MAPPER = new ObjectMapper();
40
41 public MonitoredTaskImpl() {
42 startTime = System.currentTimeMillis();
43 statusTime = startTime;
44 stateTime = startTime;
45 }
46
47 @Override
48 public synchronized MonitoredTaskImpl clone() {
49 try {
50 return (MonitoredTaskImpl) super.clone();
51 } catch (CloneNotSupportedException e) {
52 throw new AssertionError();
53 }
54 }
55
56 @Override
57 public long getStartTime() {
58 return startTime;
59 }
60
61 @Override
62 public String getDescription() {
63 return description;
64 }
65
66 @Override
67 public String getStatus() {
68 return status;
69 }
70
71 @Override
72 public long getStatusTime() {
73 return statusTime;
74 }
75
76 @Override
77 public State getState() {
78 return state;
79 }
80
81 @Override
82 public long getStateTime() {
83 return stateTime;
84 }
85
86 @Override
87 public long getCompletionTimestamp() {
88 if (state == State.COMPLETE || state == State.ABORTED) {
89 return stateTime;
90 }
91 return -1;
92 }
93
94 @Override
95 public void markComplete(String status) {
96 setState(State.COMPLETE);
97 setStatus(status);
98 }
99
100 @Override
101 public void pause(String msg) {
102 setState(State.WAITING);
103 setStatus(msg);
104 }
105
106 @Override
107 public void resume(String msg) {
108 setState(State.RUNNING);
109 setStatus(msg);
110 }
111
112 @Override
113 public void abort(String msg) {
114 setStatus(msg);
115 setState(State.ABORTED);
116 }
117
118 @Override
119 public void setStatus(String status) {
120 this.status = status;
121 statusTime = System.currentTimeMillis();
122 }
123
124 protected void setState(State state) {
125 this.state = state;
126 stateTime = System.currentTimeMillis();
127 }
128
129 @Override
130 public void setDescription(String description) {
131 this.description = description;
132 }
133
134 @Override
135 public void cleanup() {
136 if (state == State.RUNNING) {
137 setState(State.ABORTED);
138 }
139 }
140
141
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143
144
145 public void expireNow() {
146 stateTime -= 180 * 1000;
147 }
148
149 @Override
150 public Map<String, Object> toMap() {
151 Map<String, Object> map = new HashMap<String, Object>();
152 map.put("description", getDescription());
153 map.put("status", getStatus());
154 map.put("state", getState());
155 map.put("starttimems", getStartTime());
156 map.put("statustimems", getCompletionTimestamp());
157 map.put("statetimems", getCompletionTimestamp());
158 return map;
159 }
160
161 @Override
162 public String toJSON() throws IOException {
163 return MAPPER.writeValueAsString(toMap());
164 }
165
166 @Override
167 public String toString() {
168 StringBuilder sb = new StringBuilder(512);
169 sb.append(getDescription());
170 sb.append(": status=");
171 sb.append(getStatus());
172 sb.append(", state=");
173 sb.append(getState());
174 sb.append(", startTime=");
175 sb.append(getStartTime());
176 sb.append(", completionTime=");
177 sb.append(getCompletionTimestamp());
178 return sb.toString();
179 }
180
181 }