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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.qos.legacy;
import org.apache.dubbo.common.extension.Activate;
import org.apache.dubbo.common.utils.ReflectUtils;
import org.apache.dubbo.common.utils.StringUtils;
import org.apache.dubbo.qos.command.util.ServiceCheckUtils;
import org.apache.dubbo.remoting.Channel;
import org.apache.dubbo.remoting.telnet.TelnetHandler;
import org.apache.dubbo.remoting.telnet.support.Help;
import org.apache.dubbo.rpc.model.ApplicationModel;
import org.apache.dubbo.rpc.model.ConsumerModel;
import org.apache.dubbo.rpc.model.MethodDescriptor;
import org.apache.dubbo.rpc.model.ProviderModel;
import org.apache.dubbo.rpc.model.ServiceRepository;
import java.lang.reflect.Method;
import java.util.List;
/**
* ListTelnetHandler handler list services and its methods details.
*/
@Activate
@Help(parameter = "[-l] [service]", summary = "List services and methods.", detail = "List services and methods.")
public class ListTelnetHandler implements TelnetHandler {
private ServiceRepository serviceRepository = ApplicationModel.getServiceRepository();
@Override
public String telnet(Channel channel, String message) {
StringBuilder buf = new StringBuilder();
String service = null;
boolean detail = false;
if (message.length() > 0) {
String[] parts = message.split("\\s+");
for (String part : parts) {
if ("-l".equals(part)) {
detail = true;
} else {
if (!StringUtils.isEmpty(service)) {
return "Invalid parameter " + part;
}
service = part;
}
}
} else {
service = (String) channel.getAttribute(ChangeTelnetHandler.SERVICE_KEY);
if (StringUtils.isNotEmpty(service)) {
buf.append("Use default service ").append(service).append(".\r\n");
}
}
if (StringUtils.isEmpty(service)) {
printAllServices(buf, detail);
} else {
printSpecifiedService(service, buf, detail);
if (buf.length() == 0) {
buf.append("No such service: ").append(service);
}
}
return buf.toString();
}
private void printAllServices(StringBuilder buf, boolean detail) {
printAllProvidedServices(buf, detail);
printAllReferredServices(buf, detail);
}
private void printAllProvidedServices(StringBuilder buf, boolean detail) {
List providerModels = serviceRepository.getExportedServices();
if (!providerModels.isEmpty()) {
buf.append("PROVIDER:\r\n");
}
for (ProviderModel provider : providerModels) {
buf.append(provider.getServiceKey());
if (detail) {
buf.append(" -> ");
buf.append(" published: ");
buf.append(ServiceCheckUtils.isRegistered(provider) ? "Y" : "N");
}
buf.append("\r\n");
}
}
private void printAllReferredServices(StringBuilder buf, boolean detail) {
List consumerModels = serviceRepository.getReferredServices();
if (!consumerModels.isEmpty()) {
buf.append("CONSUMER:\r\n");
}
for (ConsumerModel consumer : consumerModels) {
buf.append(consumer.getServiceKey());
if (detail) {
buf.append(" -> ");
buf.append(" addresses: ");
buf.append(ServiceCheckUtils.getConsumerAddressNum(consumer));
}
buf.append("\r\n");
}
}
private void printSpecifiedService(String service, StringBuilder buf, boolean detail) {
printSpecifiedProvidedService(service, buf, detail);
printSpecifiedReferredService(service, buf, detail);
}
private void printSpecifiedProvidedService(String service, StringBuilder buf, boolean detail) {
for (ProviderModel provider : ApplicationModel.allProviderModels()) {
if (isProviderMatched(service,provider)) {
buf.append(provider.getServiceKey()).append(" (as provider):\r\n");
for (MethodDescriptor method : provider.getAllMethods()) {
printMethod(method.getMethod(), buf, detail);
}
}
}
}
private void printSpecifiedReferredService(String service, StringBuilder buf, boolean detail) {
for (ConsumerModel consumer : ApplicationModel.allConsumerModels()) {
if (isConsumerMatcher(service,consumer)) {
buf.append(consumer.getServiceKey()).append(" (as consumer):\r\n");
for (MethodDescriptor method : consumer.getAllMethods()) {
printMethod(method.getMethod(), buf, detail);
}
}
}
}
private void printMethod(Method method, StringBuilder buf, boolean detail) {
if (detail) {
buf.append('\t').append(ReflectUtils.getName(method));
} else {
buf.append('\t').append(method.getName());
}
buf.append("\r\n");
}
private boolean isProviderMatched(String service, ProviderModel provider) {
return service.equalsIgnoreCase(provider.getServiceKey())
|| service.equalsIgnoreCase(provider.getServiceInterfaceClass().getName())
|| service.equalsIgnoreCase(provider.getServiceInterfaceClass().getSimpleName());
}
private boolean isConsumerMatcher(String service,ConsumerModel consumer) {
return service.equalsIgnoreCase(consumer.getServiceKey())
|| service.equalsIgnoreCase(consumer.getServiceInterfaceClass().getName())
|| service.equalsIgnoreCase(consumer.getServiceInterfaceClass().getSimpleName());
}
}