dubbo Live 源码
dubbo Live 代码
文件路径：/dubbo-plugin/dubbo-qos/src/main/java/org/apache/dubbo/qos/command/impl/Live.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.dubbo.qos.command.impl;
import org.apache.dubbo.common.URL;
import org.apache.dubbo.common.constants.CommonConstants;
import org.apache.dubbo.config.ApplicationConfig;
import org.apache.dubbo.qos.command.BaseCommand;
import org.apache.dubbo.qos.command.CommandContext;
import org.apache.dubbo.qos.command.annotation.Cmd;
import org.apache.dubbo.qos.probe.LivenessProbe;
import org.apache.dubbo.rpc.model.FrameworkModel;
import java.util.List;
import java.util.Objects;
import java.util.stream.Collectors;
@Cmd(name = "live", summary = "Judge if service is alive? ")
public class Live implements BaseCommand {
private FrameworkModel frameworkModel;
public Live(FrameworkModel frameworkModel) {
this.frameworkModel = frameworkModel;
}
@Override
public String execute(CommandContext commandContext, String[] args) {
String config = frameworkModel.getApplicationModels()
.stream()
.map(applicationModel -> applicationModel.getApplicationConfigManager().getApplication())
.map(o -> o.orElse(null))
.filter(Objects::nonNull)
.map(ApplicationConfig::getLivenessProbe)
.filter(Objects::nonNull)
.collect(Collectors.joining(","));
URL url = URL.valueOf("application://")
.addParameter(CommonConstants.QOS_LIVE_PROBE_EXTENSION, config);
List<LivenessProbe> livenessProbes = frameworkModel.getExtensionLoader(LivenessProbe.class)
.getActivateExtension(url, CommonConstants.QOS_LIVE_PROBE_EXTENSION);
if (!livenessProbes.isEmpty()) {
for (LivenessProbe livenessProbe : livenessProbes) {
if (!livenessProbe.check()) {
// 503 Service Unavailable
commandContext.setHttpCode(503);
return "false";
}
}
}
// 200 OK
commandContext.setHttpCode(200);
return "true";
}
}
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