/
CpuGaugeSet.java
150 lines (136 loc) · 5.14 KB
/
CpuGaugeSet.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
/*
* #%L
* Wisdom-Framework
* %%
* Copyright (C) 2013 - 2014 Wisdom Framework
* %%
* 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.
* #L%
*/
package org.wisdom.monitor.extensions.dashboard;
import com.codahale.metrics.Gauge;
import com.codahale.metrics.Metric;
import com.codahale.metrics.MetricSet;
import com.google.common.collect.ImmutableMap;
import java.lang.management.ManagementFactory;
import java.lang.management.OperatingSystemMXBean;
import java.util.Map;
/**
* Some information about the running system.
*/
public class CpuGaugeSet implements MetricSet {
/**
* The key to retrieve the number of processor.
*/
public static final String PROCESSORS = "processors";
/**
* The key to retrieve the system load.
*/
public static final String SYSTEM_LOAD_AVERAGE = "systemLoadAverage";
/**
* The key to retrieve the CPU system load.
*/
public static final String CPU_SYSTEM_LOAD = "cpuSystemLoad";
/**
* The key to retrieve the CPU process load.
*/
public static final String CPU_PROCESS_LOAD = "cpuProcessLoad";
/**
* The key to retrieve the CPU process time.
*/
public static final String CPU_PROCESS_TIME = "cpuProcessTime";
private OperatingSystemMXBean bean = ManagementFactory.getOperatingSystemMXBean();
/**
* @return the CPU metrics. The returned map contains the following metrics: number of processors,
* average system load, CPU system load, CPU process load, and Process CPU time. These values are retrieved using
* JMX and in particular the Sun's implementation of the OperatingSystemMXBean MBean. This bean is not necessarily
* available. In this case {@literal -1} is returned.
*/
public Map<String, Metric> getMetrics() {
return ImmutableMap.<String, Metric>of(
PROCESSORS, new Gauge<Integer>() {
/**
* @return the number of processor.
*/
public Integer getValue() {
return bean.getAvailableProcessors();
}
},
SYSTEM_LOAD_AVERAGE, new Gauge<Double>() {
/**
* @return the average system load.
*/
public Double getValue() {
return bean.getSystemLoadAverage();
}
},
CPU_SYSTEM_LOAD, new Gauge<Double>() {
/**
* @return the system CPU load.
*/
public Double getValue() {
return getSystemCpuLoad();
}
},
CPU_PROCESS_LOAD, new Gauge<Double>() {
/**
* @return the process CPU load.
*/
public Double getValue() {
return getCpuProcessLoad();
}
},
CPU_PROCESS_TIME, new Gauge<Long>() {
/**
* @return the process CPU load.
*/
public Long getValue() {
return getCpuTime();
}
}
);
}
/**
* This method uses a Sun specific class (implementation of the Operating System MX Bean.
* @return the CPU system load, or {@literal -1.0} if not available.
*/
private Double getSystemCpuLoad() {
if (bean instanceof com.sun.management.OperatingSystemMXBean) { //NOSONAR
return ((com.sun.management.OperatingSystemMXBean) bean).getSystemCpuLoad() * 100.0; //NOSONAR
} else {
return -1.0;
}
}
/**
* This method uses a Sun specific class (implementation of the Operating System MX Bean.
* @return the CPU process load, or {@literal -1.0} if not available.
*/
private Double getCpuProcessLoad() {
if (bean instanceof com.sun.management.OperatingSystemMXBean) { //NOSONAR
return ((com.sun.management.OperatingSystemMXBean) bean).getProcessCpuLoad() * 100.0; //NOSONAR
} else {
return -1.0;
}
}
/**
* This method uses a Sun specific class (implementation of the Operating System MX Bean.
* @return the CPU process time, or {@literal -1L} if not available.
*/
private Long getCpuTime() {
if (bean instanceof com.sun.management.OperatingSystemMXBean) { //NOSONAR
return ((com.sun.management.OperatingSystemMXBean) bean).getProcessCpuTime(); //NOSONAR
} else {
return -1L;
}
}
}