hadoop Probe 源码
haddop Probe 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core/src/main/java/org/apache/hadoop/yarn/service/monitor/probe/Probe.java
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.hadoop.yarn.service.monitor.probe;
import org.apache.commons.lang3.StringUtils;
import org.apache.hadoop.yarn.service.component.instance.ComponentInstance;
import java.io.IOException;
import java.util.Map;
/**
* Base class of all probes.
*/
public abstract class Probe implements MonitorKeys {
private String name;
protected Probe() {
}
/**
* Create a probe of a specific name
*
* @param name probe name
*/
public Probe(String name) {
this.name = name;
}
protected void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
@Override
public String toString() {
return getName();
}
public static String getProperty(Map<String, String> props, String name,
String defaultValue) throws IOException {
String value = props.get(name);
if (StringUtils.isEmpty(value)) {
if (defaultValue == null) {
throw new IOException(name + " not specified");
}
return defaultValue;
}
return value;
}
public static int getPropertyInt(Map<String, String> props, String name,
Integer defaultValue) throws IOException {
String value = props.get(name);
if (StringUtils.isEmpty(value)) {
if (defaultValue == null) {
throw new IOException(name + " not specified");
}
return defaultValue;
}
return Integer.parseInt(value);
}
public static boolean getPropertyBool(Map<String, String> props, String name,
boolean defaultValue) {
String value = props.get(name);
if (StringUtils.isEmpty(value)) {
return defaultValue;
}
return Boolean.parseBoolean(value);
}
/**
* perform any prelaunch initialization
*/
public void init() throws IOException {
}
/**
* Ping the endpoint. All exceptions must be caught and included in the
* (failure) status.
*
* @param instance instance to ping
* @return the status
*/
public abstract ProbeStatus ping(ComponentInstance instance);
}
相关信息
相关文章
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
7、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦