/*
* Copyright (c) 2012 S.C. Axemblr Software Solutions S.R.L
*
* 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 com.axemblr.provisionr.commands;
import com.axemblr.provisionr.api.pool.Machine;
import com.axemblr.provisionr.api.pool.Pool;
import com.axemblr.provisionr.core.CoreProcessVariables;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Objects;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.reflect.TypeToken;
import java.io.PrintStream;
import java.util.List;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.runtime.ProcessInstance;
import org.apache.felix.gogo.commands.Command;
import org.apache.felix.gogo.commands.Option;
import org.apache.karaf.shell.console.OsgiCommandSupport;
@Command(scope = "provisionr", name = "pools", description = "List active pools")
public class ListPoolsCommand extends OsgiCommandSupport {
private PrintStream out = System.out;
@Option(name = "-k", aliases = "--key", description = "Key for filtering a specific pool",
required = false)
private String key = "";
private final ProcessEngine processEngine;
public ListPoolsCommand(ProcessEngine processEngine) {
this.processEngine = checkNotNull(processEngine, "processEngine is null");
}
@Override
protected Object doExecute() throws Exception {
List<ProcessInstance> processes;
if (key.isEmpty()) {
processes = processEngine.getRuntimeService().createProcessInstanceQuery().list();
} else {
processes = processEngine.getRuntimeService().createProcessInstanceQuery()
.processInstanceBusinessKey(key).list();
}
if (processes.isEmpty()) {
out.println("No active pools found. You can create one using provisionr:create");
return null;
}
final Gson gson = new GsonBuilder().setPrettyPrinting().create();
for (ProcessInstance instance : processes) {
Pool pool = (Pool) processEngine.getRuntimeService()
.getVariable(instance.getId(), CoreProcessVariables.POOL);
if (pool == null) {
continue; /* skip - this process is not a provisionr process */
}
String businessKey = (String) processEngine.getRuntimeService()
.getVariable(instance.getId(), CoreProcessVariables.POOL_BUSINESS_KEY);
if (!Objects.equal(instance.getBusinessKey(), businessKey)) {
continue; /* ignore - this is a process started by the main pool management process */
}
@SuppressWarnings("unchecked")
List<Machine> machines = (List<Machine>) processEngine.getRuntimeService()
.getVariable(instance.getId(), CoreProcessVariables.MACHINES);
out.println("****** Pool Description ******");
out.println(gson.toJson(pool));
out.println("****** List of Machines ******");
if (machines != null) {
out.println(gson.toJson(machines, new TypeToken<List<Machine>>() {
}.getType()));
}
out.println("Pool Key: " + instance.getBusinessKey());
out.println();
}
return null;
}
@VisibleForTesting
void setOut(PrintStream out) {
this.out = checkNotNull(out, "out is null");
}
@VisibleForTesting
void setKey(String key) {
this.key = checkNotNull(key, "key is null");
}
}