org.apache.camel.component.service.ServiceEndpoint Maven / Gradle / Ivy
/**
* 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.camel.component.service;
import java.util.HashMap;
import java.util.Map;
import org.apache.camel.CamelContext;
import org.apache.camel.Consumer;
import org.apache.camel.DelegateEndpoint;
import org.apache.camel.Endpoint;
import org.apache.camel.Processor;
import org.apache.camel.Producer;
import org.apache.camel.api.management.ManagedAttribute;
import org.apache.camel.api.management.ManagedResource;
import org.apache.camel.cloud.DiscoverableService;
import org.apache.camel.cloud.ServiceDefinition;
import org.apache.camel.cloud.ServiceRegistry;
import org.apache.camel.impl.cloud.DefaultServiceDefinition;
import org.apache.camel.spi.Metadata;
import org.apache.camel.spi.UriEndpoint;
import org.apache.camel.spi.UriPath;
import org.apache.camel.support.DefaultEndpoint;
/**
* Represents an endpoint which is registered to a Service Registry such as Consul, Etcd.
*/
@ManagedResource(description = "Managed Service Endpoint")
@UriEndpoint(
firstVersion = "2.22.0",
scheme = "service",
syntax = "service:serviceName:delegateUri",
consumerOnly = true,
title = "Service",
lenientProperties = true,
label = "cloud")
public class ServiceEndpoint extends DefaultEndpoint implements DelegateEndpoint {
private final Endpoint delegateEndpoint;
private final ServiceRegistry serviceRegistry;
private final Map serviceParameters;
private final ServiceDefinition serviceDefinition;
@UriPath(description = "The endpoint uri to expose as service")
@Metadata(required = true)
private final String delegateUri;
public ServiceEndpoint(String uri, ServiceComponent component, ServiceRegistry serviceRegistry, Map serviceParameters, String delegateUri) {
super(uri, component);
this.serviceRegistry = serviceRegistry;
this.serviceParameters = serviceParameters;
this.delegateUri = delegateUri;
this.delegateEndpoint = getCamelContext().getEndpoint(delegateUri);
// The service properties set on uri override parameter provided by a
// an endpoint of type DiscoverableService.
this.serviceDefinition = computeServiceDefinition(component.getCamelContext(), delegateEndpoint);
}
@Override
public Endpoint getEndpoint() {
return this.delegateEndpoint;
}
@ManagedAttribute(description = "The consumer endpoint to expose as a service", mask = true)
public String getDelegateEndpointUri() {
return this.delegateEndpoint.getEndpointUri();
}
public ServiceDefinition getServiceDefinition() {
return this.serviceDefinition;
}
@Override
public Producer createProducer() throws Exception {
throw new UnsupportedOperationException("Not yet implemented");
}
@Override
public Consumer createConsumer(Processor processor) throws Exception {
return new ServiceConsumer(this, processor, serviceRegistry);
}
@Override
public boolean isSingleton() {
return true;
}
private ServiceDefinition computeServiceDefinition(CamelContext context, Endpoint delegateEndpoint) {
Map parameters = new HashMap<>();
if (delegateEndpoint instanceof DiscoverableService) {
parameters.putAll(((DiscoverableService)delegateEndpoint).getServiceProperties());
}
parameters.putAll(serviceParameters);
parameters.computeIfAbsent(ServiceDefinition.SERVICE_META_ID, k -> context.getUuidGenerator().generateUuid());
return DefaultServiceDefinition.builder().from(parameters).build();
}
}