本文整理汇总了Java中org.apache.hadoop.lib.service.Instrumentation.getSnapshot方法的典型用法代码示例。如果您正苦于以下问题：Java Instrumentation.getSnapshot方法的具体用法？Java Instrumentation.getSnapshot怎么用？Java Instrumentation.getSnapshot使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.hadoop.lib.service.Instrumentation的用法示例。
在下文中一共展示了Instrumentation.getSnapshot方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: sampling
import org.apache.hadoop.lib.service.Instrumentation; //导入方法依赖的package包/类
@Test
@TestDir
@SuppressWarnings("unchecked")
public void sampling() throws Exception {
String dir = TestDirHelper.getTestDir().getAbsolutePath();
String services = StringUtils.join(",", Arrays.asList(InstrumentationService.class.getName(),
SchedulerService.class.getName()));
Configuration conf = new Configuration(false);
conf.set("server.services", services);
Server server = new Server("server", dir, dir, dir, dir, conf);
server.init();
Instrumentation instrumentation = server.get(Instrumentation.class);
final AtomicInteger count = new AtomicInteger();
Instrumentation.Variable<Long> varToSample = new Instrumentation.Variable<Long>() {
@Override
public Long getValue() {
return (long) count.incrementAndGet();
}
};
instrumentation.addSampler("g", "s", 10, varToSample);
sleep(2000);
int i = count.get();
assertTrue(i > 0);
Map<String, Map<String, ?>> snapshot = instrumentation.getSnapshot();
Map<String, Map<String, Object>> samplers = (Map<String, Map<String, Object>>) snapshot.get("samplers");
InstrumentationService.Sampler sampler = (InstrumentationService.Sampler) samplers.get("g").get("s");
assertTrue(sampler.getRate() > 0);
server.destroy();
}
示例2: sampling
import org.apache.hadoop.lib.service.Instrumentation; //导入方法依赖的package包/类
@Test
@TestDir
@SuppressWarnings("unchecked")
public void sampling() throws Exception {
String dir = TestDirHelper.getTestDir().getAbsolutePath();
String services = StringUtils.join(",", Arrays
.asList(InstrumentationService.class.getName(),
SchedulerService.class.getName()));
Configuration conf = new Configuration(false);
conf.set("server.services", services);
Server server = new Server("server", dir, dir, dir, dir, conf);
server.init();
Instrumentation instrumentation = server.get(Instrumentation.class);
final AtomicInteger count = new AtomicInteger();
Instrumentation.Variable<Long> varToSample =
new Instrumentation.Variable<Long>() {
@Override
public Long getValue() {
return (long) count.incrementAndGet();
}
};
instrumentation.addSampler("g", "s", 10, varToSample);
sleep(2000);
int i = count.get();
assertTrue(i > 0);
Map<String, Map<String, ?>> snapshot = instrumentation.getSnapshot();
Map<String, Map<String, Object>> samplers =
(Map<String, Map<String, Object>>) snapshot.get("samplers");
InstrumentationService.Sampler sampler =
(InstrumentationService.Sampler) samplers.get("g").get("s");
assertTrue(sampler.getRate() > 0);
server.destroy();
}
示例3: service
import org.apache.hadoop.lib.service.Instrumentation; //导入方法依赖的package包/类
@Test
@TestDir
@SuppressWarnings("unchecked")
public void service() throws Exception {
String dir = TestDirHelper.getTestDir().getAbsolutePath();
String services = StringUtils.join(",", Arrays.asList(InstrumentationService.class.getName()));
Configuration conf = new Configuration(false);
conf.set("server.services", services);
Server server = new Server("server", dir, dir, dir, dir, conf);
server.init();
Instrumentation instrumentation = server.get(Instrumentation.class);
assertNotNull(instrumentation);
instrumentation.incr("g", "c", 1);
instrumentation.incr("g", "c", 2);
instrumentation.incr("g", "c1", 2);
Instrumentation.Cron cron = instrumentation.createCron();
cron.start();
sleep(100);
cron.stop();
instrumentation.addCron("g", "t", cron);
cron = instrumentation.createCron();
cron.start();
sleep(200);
cron.stop();
instrumentation.addCron("g", "t", cron);
Instrumentation.Variable<String> var = new Instrumentation.Variable<String>() {
@Override
public String getValue() {
return "foo";
}
};
instrumentation.addVariable("g", "v", var);
Instrumentation.Variable<Long> varToSample = new Instrumentation.Variable<Long>() {
@Override
public Long getValue() {
return 1L;
}
};
instrumentation.addSampler("g", "s", 10, varToSample);
Map<String, ?> snapshot = instrumentation.getSnapshot();
assertNotNull(snapshot.get("os-env"));
assertNotNull(snapshot.get("sys-props"));
assertNotNull(snapshot.get("jvm"));
assertNotNull(snapshot.get("counters"));
assertNotNull(snapshot.get("timers"));
assertNotNull(snapshot.get("variables"));
assertNotNull(snapshot.get("samplers"));
assertNotNull(((Map<String, String>) snapshot.get("os-env")).get("PATH"));
assertNotNull(((Map<String, String>) snapshot.get("sys-props")).get("java.version"));
assertNotNull(((Map<String, ?>) snapshot.get("jvm")).get("free.memory"));
assertNotNull(((Map<String, ?>) snapshot.get("jvm")).get("max.memory"));
assertNotNull(((Map<String, ?>) snapshot.get("jvm")).get("total.memory"));
assertNotNull(((Map<String, Map<String, Object>>) snapshot.get("counters")).get("g"));
assertNotNull(((Map<String, Map<String, Object>>) snapshot.get("timers")).get("g"));
assertNotNull(((Map<String, Map<String, Object>>) snapshot.get("variables")).get("g"));
assertNotNull(((Map<String, Map<String, Object>>) snapshot.get("samplers")).get("g"));
assertNotNull(((Map<String, Map<String, Object>>) snapshot.get("counters")).get("g").get("c"));
assertNotNull(((Map<String, Map<String, Object>>) snapshot.get("counters")).get("g").get("c1"));
assertNotNull(((Map<String, Map<String, Object>>) snapshot.get("timers")).get("g").get("t"));
assertNotNull(((Map<String, Map<String, Object>>) snapshot.get("variables")).get("g").get("v"));
assertNotNull(((Map<String, Map<String, Object>>) snapshot.get("samplers")).get("g").get("s"));
StringWriter writer = new StringWriter();
JSONObject.writeJSONString(snapshot, writer);
writer.close();
server.destroy();
}