lburgazzoli commented on a change in pull request #456: URL: https://github.com/apache/camel-k-runtime/pull/456#discussion_r478895744
########## File path: camel-kamelet/src/main/java/org/apache/camel/component/kamelet/KameletEndpoint.java ########## @@ -0,0 +1,173 @@ +/* + * 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.kamelet; + +import java.util.Collections; +import java.util.Map; + +import org.apache.camel.AsyncCallback; +import org.apache.camel.AsyncProducer; +import org.apache.camel.Consumer; +import org.apache.camel.Endpoint; +import org.apache.camel.Exchange; +import org.apache.camel.Processor; +import org.apache.camel.Producer; +import org.apache.camel.spi.Metadata; +import org.apache.camel.spi.UriEndpoint; +import org.apache.camel.spi.UriPath; +import org.apache.camel.support.DefaultAsyncProducer; +import org.apache.camel.support.DefaultConsumer; +import org.apache.camel.support.DefaultEndpoint; +import org.apache.camel.support.service.ServiceHelper; +import org.apache.camel.util.ObjectHelper; + +@UriEndpoint( + firstVersion = "3.5.0", + scheme = "kamelet", + syntax = "kamelet:templateId/routeId", + title = "Kamelet", + label = "camel-k") +public class KameletEndpoint extends DefaultEndpoint { + @Metadata(required = true) + @UriPath(description = "The Route Template ID") + private final String templateId; + + @Metadata(required = false) + @UriPath(description = "The Route ID", defaultValueNote = "The ID will be auto-generated if not provided") + private final String routeId; + + private final Map<String, Object> kameletProperties; + private final String kameletUri; + + public KameletEndpoint( + String uri, + KameletComponent component, + String templateId, + String routeId, + Map<String, Object> kameletProperties) { + + super(uri, component); + + ObjectHelper.notNull(templateId, "template id"); + ObjectHelper.notNull(routeId, "route id"); + ObjectHelper.notNull(kameletProperties, "kamelet properties"); + + this.templateId = templateId; + this.routeId = routeId; + this.kameletProperties = Collections.unmodifiableMap(kameletProperties); + this.kameletUri = "direct:" + routeId; + } + + @Override + public KameletComponent getComponent() { + return (KameletComponent) super.getComponent(); + } + + public String getTemplateId() { + return templateId; + } + + public String getRouteId() { + return routeId; + } + + public Map<String, Object> getKameletProperties() { + return kameletProperties; + } + + @Override + public Producer createProducer() throws Exception { + return new KameletProducer(); + } + + @Override + public Consumer createConsumer(Processor processor) throws Exception { + Consumer answer = new KemeletConsumer(processor); + configureConsumer(answer); + return answer; + } + + @Override + protected void doInit() throws Exception { + super.doInit(); + + getComponent().onEndpointAdd(this); + } + + // ********************************* + // + // Helpers + // + // ********************************* + + private class KemeletConsumer extends DefaultConsumer { + private volatile Endpoint endpoint; + private volatile Consumer consumer; + + public KemeletConsumer(Processor processor) { + super(KameletEndpoint.this, processor); + } + + @Override + protected void doStart() throws Exception { + endpoint = getCamelContext().getEndpoint(kameletUri); + consumer = endpoint.createConsumer(getProcessor()); + + ServiceHelper.startService(endpoint, consumer); + super.doStart(); + } + + @Override + protected void doStop() throws Exception { + ServiceHelper.stopService(consumer, endpoint); + super.doStop(); + } + } + + private class KameletProducer extends DefaultAsyncProducer { + private volatile Endpoint endpoint; + private volatile AsyncProducer producer; + + public KameletProducer() { + super(KameletEndpoint.this); + } + + @Override + public boolean process(Exchange exchange, AsyncCallback callback) { + if (producer != null) { + return producer.process(exchange, callback); + } else { + callback.done(true); + return true; + } + } + + @Override + protected void doStart() throws Exception { Review comment: I can probably do it for the producer but the consumer needs the processor so I can't eagerly create it right ? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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