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SpringStatusChecker.java
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SpringStatusChecker.java
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/*
* 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.config.spring.status;
import org.apache.dubbo.common.extension.Activate;
import org.apache.dubbo.common.logger.Logger;
import org.apache.dubbo.common.logger.LoggerFactory;
import org.apache.dubbo.common.status.Status;
import org.apache.dubbo.common.status.StatusChecker;
import org.apache.dubbo.config.spring.extension.SpringExtensionFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.Lifecycle;
import org.springframework.web.context.support.GenericWebApplicationContext;
import java.lang.reflect.Method;
/**
* SpringStatusChecker
*/
@Activate
public class SpringStatusChecker implements StatusChecker {
private static final Logger logger = LoggerFactory.getLogger(SpringStatusChecker.class);
@Override
public Status check() {
ApplicationContext context = null;
for (ApplicationContext c : SpringExtensionFactory.getContexts()) {
// [Issue] SpringStatusChecker execute errors on non-XML Spring configuration
// issue : https://github.com/apache/incubator-dubbo/issues/3615
if(c instanceof GenericWebApplicationContext) { // ignore GenericXmlApplicationContext
continue;
}
if (c != null) {
context = c;
break;
}
}
if (context == null) {
return new Status(Status.Level.UNKNOWN);
}
Status.Level level = Status.Level.OK;
if (context instanceof Lifecycle) {
if (((Lifecycle) context).isRunning()) {
level = Status.Level.OK;
} else {
level = Status.Level.ERROR;
}
} else {
level = Status.Level.UNKNOWN;
}
StringBuilder buf = new StringBuilder();
try {
Class<?> cls = context.getClass();
Method method = null;
while (cls != null && method == null) {
try {
method = cls.getDeclaredMethod("getConfigLocations", new Class<?>[0]);
} catch (NoSuchMethodException t) {
cls = cls.getSuperclass();
}
}
if (method != null) {
if (!method.isAccessible()) {
method.setAccessible(true);
}
String[] configs = (String[]) method.invoke(context, new Object[0]);
if (configs != null && configs.length > 0) {
for (String config : configs) {
if (buf.length() > 0) {
buf.append(",");
}
buf.append(config);
}
}
}
} catch (Throwable t) {
logger.warn(t.getMessage(), t);
}
return new Status(level, buf.toString());
}
}