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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.camel.component.kubernetes.services;
import java.util.List;
import java.util.Map;
import java.util.function.Function;
import io.fabric8.kubernetes.api.model.Service;
import io.fabric8.kubernetes.api.model.ServiceBuilder;
import io.fabric8.kubernetes.api.model.ServiceList;
import io.fabric8.kubernetes.api.model.ServiceSpec;
import io.fabric8.kubernetes.api.model.StatusDetails;
import io.fabric8.kubernetes.client.dsl.Resource;
import org.apache.camel.Exchange;
import org.apache.camel.component.kubernetes.AbstractKubernetesEndpoint;
import org.apache.camel.component.kubernetes.KubernetesConstants;
import org.apache.camel.component.kubernetes.KubernetesHelper;
import org.apache.camel.component.kubernetes.KubernetesOperations;
import org.apache.camel.support.DefaultProducer;
import org.apache.camel.util.ObjectHelper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static org.apache.camel.component.kubernetes.KubernetesHelper.prepareOutboundMessage;
public class KubernetesServicesProducer extends DefaultProducer {
private static final Logger LOG = LoggerFactory.getLogger(KubernetesServicesProducer.class);
public KubernetesServicesProducer(AbstractKubernetesEndpoint endpoint) {
super(endpoint);
}
@Override
public AbstractKubernetesEndpoint getEndpoint() {
return (AbstractKubernetesEndpoint) super.getEndpoint();
}
@Override
public void process(Exchange exchange) throws Exception {
String operation = KubernetesHelper.extractOperation(getEndpoint(), exchange);
switch (operation) {
case KubernetesOperations.LIST_SERVICES_OPERATION:
doList(exchange);
break;
case KubernetesOperations.LIST_SERVICES_BY_LABELS_OPERATION:
doListServiceByLabels(exchange);
break;
case KubernetesOperations.GET_SERVICE_OPERATION:
doGetService(exchange);
break;
case KubernetesOperations.CREATE_SERVICE_OPERATION:
doCreateService(exchange);
break;
case KubernetesOperations.UPDATE_SERVICE_OPERATION:
doUpdateService(exchange);
break;
case KubernetesOperations.DELETE_SERVICE_OPERATION:
doDeleteService(exchange);
break;
default:
throw new IllegalArgumentException("Unsupported operation " + operation);
}
}
protected void doList(Exchange exchange) {
String namespaceName = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_NAMESPACE_NAME, String.class);
ServiceList servicesList;
if (!ObjectHelper.isEmpty(namespaceName)) {
servicesList = getEndpoint().getKubernetesClient().services().inNamespace(namespaceName).list();
} else {
servicesList = getEndpoint().getKubernetesClient().services().inAnyNamespace().list();
}
prepareOutboundMessage(exchange, servicesList.getItems());
}
protected void doListServiceByLabels(Exchange exchange) {
Map labels = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_SERVICE_LABELS, Map.class);
String namespaceName = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_NAMESPACE_NAME, String.class);
ServiceList servicesList;
if (!ObjectHelper.isEmpty(namespaceName)) {
servicesList = getEndpoint()
.getKubernetesClient()
.services()
.inNamespace(namespaceName)
.withLabels(labels)
.list();
} else {
servicesList = getEndpoint()
.getKubernetesClient()
.services()
.inAnyNamespace()
.withLabels(labels)
.list();
}
prepareOutboundMessage(exchange, servicesList.getItems());
}
protected void doGetService(Exchange exchange) {
String serviceName = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_SERVICE_NAME, String.class);
String namespaceName = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_NAMESPACE_NAME, String.class);
if (ObjectHelper.isEmpty(serviceName)) {
LOG.error("Get a specific service require specify a service name");
throw new IllegalArgumentException("Get a specific service require specify a service name");
}
if (ObjectHelper.isEmpty(namespaceName)) {
LOG.error("Get a specific service require specify a namespace name");
throw new IllegalArgumentException("Get a specific service require specify a namespace name");
}
Service service = getEndpoint().getKubernetesClient().services().inNamespace(namespaceName).withName(serviceName).get();
prepareOutboundMessage(exchange, service);
}
protected void doUpdateService(Exchange exchange) {
doCreateOrUpdateService(exchange, "Update", Resource::update);
}
protected void doCreateService(Exchange exchange) {
doCreateOrUpdateService(exchange, "Create", Resource::create);
}
private void doCreateOrUpdateService(
Exchange exchange, String operationName, Function, Service> operation) {
String serviceName = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_SERVICE_NAME, String.class);
String namespaceName = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_NAMESPACE_NAME, String.class);
ServiceSpec serviceSpec = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_SERVICE_SPEC, ServiceSpec.class);
if (ObjectHelper.isEmpty(serviceName)) {
LOG.error("{} a specific service require specify a service name", operationName);
throw new IllegalArgumentException(
String.format("%s a specific service require specify a service name", operationName));
}
if (ObjectHelper.isEmpty(namespaceName)) {
LOG.error("{} a specific service require specify a namespace name", operationName);
throw new IllegalArgumentException(
String.format("%s a specific service require specify a namespace name", operationName));
}
if (ObjectHelper.isEmpty(serviceSpec)) {
LOG.error("{} a specific service require specify a service spec bean", operationName);
throw new IllegalArgumentException(
String.format("%s a specific service require specify a service spec bean", operationName));
}
Map labels = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_SERVICE_LABELS, Map.class);
Service serviceCreating = new ServiceBuilder().withNewMetadata().withName(serviceName).withLabels(labels).endMetadata()
.withSpec(serviceSpec).build();
Service service
= operation.apply(
getEndpoint().getKubernetesClient().services().inNamespace(namespaceName).resource(serviceCreating));
prepareOutboundMessage(exchange, service);
}
protected void doDeleteService(Exchange exchange) {
String serviceName = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_SERVICE_NAME, String.class);
String namespaceName = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_NAMESPACE_NAME, String.class);
if (ObjectHelper.isEmpty(serviceName)) {
LOG.error("Delete a specific service require specify a service name");
throw new IllegalArgumentException("Delete a specific service require specify a service name");
}
if (ObjectHelper.isEmpty(namespaceName)) {
LOG.error("Delete a specific service require specify a namespace name");
throw new IllegalArgumentException("Delete a specific service require specify a namespace name");
}
List statusDetails
= getEndpoint().getKubernetesClient().services().inNamespace(namespaceName).withName(serviceName).delete();
boolean serviceDeleted = ObjectHelper.isNotEmpty(statusDetails);
prepareOutboundMessage(exchange, serviceDeleted);
}
}
