/**
* 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.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import com.openshift.restclient.ClientBuilder;
import com.openshift.restclient.IClient;
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;
public class ClientService implements Service<IClient> {
public static final ServiceName SERVICE_NAME = OpenShiftTopologyConnector.SERVICE_NAME.append("client");
public static int servicePort(String serviceName) {
String envName = serviceName.replace("-", "_").toUpperCase() + "_SERVICE_PORT";
String envPort = System.getenv(envName);
if (envPort == null) {
return -1;
}
return Integer.parseInt(envPort);
}
@Override
public void start(StartContext context) throws StartException {
try {
this.client = openshiftClient();
// Trigger an API call to ensure we fail-fast if we can't talk
// to the API
this.client.getServerReadyStatus();
} catch (IOException ex) {
throw new StartException(ex);
}
}
@Override
public void stop(StopContext context) {
this.client = null;
}
@Override
public IClient getValue() throws IllegalStateException, IllegalArgumentException {
return this.client;
}
private IClient openshiftClient() throws IOException {
String kubeHost = serviceHost("kubernetes");
int kubePort = servicePort("kubernetes");
Path tokenFile = Paths.get("/var/run/secrets/kubernetes.io/serviceaccount/token");
String scheme = "http";
String token = null;
if (Files.exists(tokenFile)) {
token = new String(Files.readAllBytes(tokenFile));
scheme = "https";
}
return new ClientBuilder(scheme + "://" + kubeHost + ":" + kubePort)
.usingToken(token)
.build();
}
protected String serviceHost(String serviceName) {
String envName = serviceName.replace("-", "_").toUpperCase() + "_SERVICE_HOST";
return System.getenv(envName);
}
private IClient client;
}