/*
* 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.karaf.instance.command;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.karaf.instance.core.Instance;
import org.apache.karaf.instance.core.InstanceService;
import org.apache.karaf.shell.api.action.Action;
import org.apache.karaf.shell.api.action.lifecycle.Reference;
public abstract class InstanceCommandSupport implements Action {
@Reference
private InstanceService instanceService;
public InstanceService getInstanceService() {
return instanceService;
}
public void setInstanceService(InstanceService instanceService) {
this.instanceService = instanceService;
}
protected Instance getExistingInstance(String name) {
Instance i = instanceService.getInstance(name);
if (i == null) {
throw new IllegalArgumentException("Instances '" + name + "' does not exist");
}
return i;
}
protected List<Instance> getMatchingInstances(List<String> patterns) {
List<Instance> instances = new ArrayList<>();
Instance[] allInstances = instanceService.getInstances();
for (Instance instance : allInstances) {
if (match(instance.getName(), patterns)) {
instances.add(instance);
}
}
if (instances.isEmpty()) {
throw new IllegalArgumentException("No matching instances");
}
return instances;
}
protected static Map<String, URL> getResources(List<String> resources) throws MalformedURLException {
Map<String, URL> result = new HashMap<>();
if (resources != null) {
for (String resource : resources) {
String path = resource.substring(0, resource.indexOf("="));
String location = resource.substring(path.length() + 1);
URL url = new URL(location);
result.put(path, url);
}
}
return result;
}
private boolean match(String name, List<String> patterns) {
for (String pattern : patterns) {
if (name.matches(pattern)) {
return true;
}
}
return false;
}
@Override
public Object execute() throws Exception {
return doExecute();
}
protected abstract Object doExecute() throws Exception;
}