/*
* 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.brooklyn.rest.util;
import java.util.LinkedHashMap;
import java.util.Map;
import org.apache.brooklyn.api.entity.Entity;
import org.apache.brooklyn.api.location.Location;
import org.apache.brooklyn.api.mgmt.ManagementContext;
import org.apache.brooklyn.core.location.LocationConfigKeys;
public class EntityLocationUtils {
protected final ManagementContext context;
public EntityLocationUtils(ManagementContext ctx) {
this.context = ctx;
}
/* Returns the number of entites at each location for which the geographic coordinates are known. */
public Map<Location, Integer> countLeafEntitiesByLocatedLocations() {
Map<Location, Integer> result = new LinkedHashMap<Location, Integer>();
for (Entity e: context.getApplications()) {
countLeafEntitiesByLocatedLocations(e, null, result);
}
return result;
}
protected void countLeafEntitiesByLocatedLocations(Entity target, Entity locatedParent, Map<Location, Integer> result) {
if (isLocatedLocation(target))
locatedParent = target;
if (!target.getChildren().isEmpty()) {
// non-leaf - inspect children
for (Entity child: target.getChildren())
countLeafEntitiesByLocatedLocations(child, locatedParent, result);
} else {
// leaf node - increment location count
if (locatedParent!=null) {
for (Location l: locatedParent.getLocations()) {
Location ll = getMostGeneralLocatedLocation(l);
if (ll!=null) {
Integer count = result.get(ll);
if (count==null) count = 1;
else count++;
result.put(ll, count);
}
}
}
}
}
protected Location getMostGeneralLocatedLocation(Location l) {
if (l==null) return null;
if (!isLocatedLocation(l)) return null;
Location ll = getMostGeneralLocatedLocation(l.getParent());
if (ll!=null) return ll;
return l;
}
protected boolean isLocatedLocation(Entity target) {
for (Location l: target.getLocations())
if (isLocatedLocation(l)) return true;
return false;
}
protected boolean isLocatedLocation(Location l) {
return l.getConfig(LocationConfigKeys.LATITUDE)!=null && l.getConfig(LocationConfigKeys.LONGITUDE)!=null;
}
}