/**
* Copyright 2015-2016 Red Hat, Inc, and individual contributors.
*
* Licensed 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.wildfly.swarm.topology.openshift.runtime;
import java.util.List;
import com.openshift.restclient.IClient;
import com.openshift.restclient.ResourceKind;
import com.openshift.restclient.model.IProject;
import org.jboss.msc.inject.Injector;
import org.jboss.msc.service.Service;
import org.jboss.msc.service.ServiceName;
import org.jboss.msc.service.StartContext;
import org.jboss.msc.service.StartException;
import org.jboss.msc.service.StopContext;
import org.jboss.msc.value.InjectedValue;
public class NamespaceService implements Service<String> {
public static final ServiceName SERVICE_NAME = OpenShiftTopologyConnector.SERVICE_NAME.append("namespace");
public Injector<IClient> getClientInjector() {
return this.clientInjector;
}
@Override
public void start(StartContext context) throws StartException {
this.client = this.clientInjector.getValue();
this.namespace = System.getenv("KUBERNETES_NAMESPACE");
if (this.namespace == null) {
this.namespace = System.getenv("OPENSHIFT_BUILD_NAMESPACE");
}
if (this.namespace == null) {
List<IProject> projects = this.client.list(ResourceKind.PROJECT);
if (projects.size() != 1) {
throw new StartException("Unable to automatically detect the " +
"Kubernetes namespace to use. Set the environment " +
"variable KUBERNETES_NAMESPACE and try again.");
}
this.namespace = projects.get(0).getNamespace();
}
}
@Override
public void stop(StopContext context) {
this.client = null;
this.namespace = null;
}
@Override
public String getValue() throws IllegalStateException, IllegalArgumentException {
return this.namespace;
}
private InjectedValue<IClient> clientInjector = new InjectedValue<>();
private IClient client;
private String namespace;
}