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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.pods;
import java.util.List;
import java.util.Map;
import java.util.function.Function;
import io.fabric8.kubernetes.api.model.Pod;
import io.fabric8.kubernetes.api.model.PodBuilder;
import io.fabric8.kubernetes.api.model.PodList;
import io.fabric8.kubernetes.api.model.PodSpec;
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 KubernetesPodsProducer extends DefaultProducer {
private static final Logger LOG = LoggerFactory.getLogger(KubernetesPodsProducer.class);
public KubernetesPodsProducer(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_PODS_OPERATION:
doList(exchange);
break;
case KubernetesOperations.LIST_PODS_BY_LABELS_OPERATION:
doListPodsByLabel(exchange);
break;
case KubernetesOperations.GET_POD_OPERATION:
doGetPod(exchange);
break;
case KubernetesOperations.CREATE_POD_OPERATION:
doCreatePod(exchange);
break;
case KubernetesOperations.UPDATE_POD_OPERATION:
doUpdatePod(exchange);
break;
case KubernetesOperations.DELETE_POD_OPERATION:
doDeletePod(exchange);
break;
default:
throw new IllegalArgumentException("Unsupported operation " + operation);
}
}
protected void doList(Exchange exchange) {
PodList podList;
String namespaceName = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_NAMESPACE_NAME, String.class);
if (ObjectHelper.isNotEmpty(namespaceName)) {
podList = getEndpoint().getKubernetesClient().pods().inNamespace(namespaceName).list();
} else {
podList = getEndpoint().getKubernetesClient().pods().inAnyNamespace().list();
}
prepareOutboundMessage(exchange, podList.getItems());
}
protected void doListPodsByLabel(Exchange exchange) {
Map labels = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_PODS_LABELS, Map.class);
if (ObjectHelper.isEmpty(labels)) {
LOG.error("Get pods by labels require specify a labels set");
throw new IllegalArgumentException("Get pods by labels require specify a labels set");
}
PodList podList = getEndpoint().getKubernetesClient()
.pods()
.inAnyNamespace()
.withLabels(labels)
.list();
prepareOutboundMessage(exchange, podList.getItems());
}
protected void doGetPod(Exchange exchange) {
String podName = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_POD_NAME, String.class);
String namespaceName = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_NAMESPACE_NAME, String.class);
if (ObjectHelper.isEmpty(podName)) {
LOG.error("Get a specific pod require specify a pod name");
throw new IllegalArgumentException("Get a specific pod require specify a pod name");
}
if (ObjectHelper.isEmpty(namespaceName)) {
LOG.error("Get a specific pod require specify a namespace name");
throw new IllegalArgumentException("Get a specific pod require specify a namespace name");
}
Pod pod = getEndpoint().getKubernetesClient().pods().inNamespace(namespaceName).withName(podName).get();
prepareOutboundMessage(exchange, pod);
}
protected void doUpdatePod(Exchange exchange) {
doCreateOrUpdatePod(exchange, "Update", Resource::update);
}
protected void doCreatePod(Exchange exchange) {
doCreateOrUpdatePod(exchange, "Create", Resource::create);
}
private void doCreateOrUpdatePod(Exchange exchange, String operationName, Function, Pod> operation) {
String podName = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_POD_NAME, String.class);
String namespaceName = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_NAMESPACE_NAME, String.class);
PodSpec podSpec = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_POD_SPEC, PodSpec.class);
if (ObjectHelper.isEmpty(podName)) {
LOG.error("{} a specific pod require specify a pod name", operationName);
throw new IllegalArgumentException(String.format("%s a specific pod require specify a pod name", operationName));
}
if (ObjectHelper.isEmpty(namespaceName)) {
LOG.error("{} a specific pod require specify a namespace name", operationName);
throw new IllegalArgumentException(
String.format("%s a specific pod require specify a namespace name", operationName));
}
if (ObjectHelper.isEmpty(podSpec)) {
LOG.error("{} a specific pod require specify a pod spec bean", operationName);
throw new IllegalArgumentException(
String.format("%s a specific pod require specify a pod spec bean", operationName));
}
Map labels = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_PODS_LABELS, Map.class);
Pod podCreating = new PodBuilder().withNewMetadata().withName(podName).withLabels(labels).endMetadata()
.withSpec(podSpec).build();
Pod pod = operation.apply(getEndpoint().getKubernetesClient().pods().inNamespace(namespaceName).resource(podCreating));
prepareOutboundMessage(exchange, pod);
}
protected void doDeletePod(Exchange exchange) {
String podName = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_POD_NAME, String.class);
String namespaceName = exchange.getIn().getHeader(KubernetesConstants.KUBERNETES_NAMESPACE_NAME, String.class);
if (ObjectHelper.isEmpty(podName)) {
LOG.error("Delete a specific pod require specify a pod name");
throw new IllegalArgumentException("Delete a specific pod require specify a pod name");
}
if (ObjectHelper.isEmpty(namespaceName)) {
LOG.error("Delete a specific pod require specify a namespace name");
throw new IllegalArgumentException("Delete a specific pod require specify a namespace name");
}
List statusDetails
= getEndpoint().getKubernetesClient().pods().inNamespace(namespaceName).withName(podName).delete();
boolean podDeleted = ObjectHelper.isNotEmpty(statusDetails);
prepareOutboundMessage(exchange, podDeleted);
}
}
