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/*
* 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.zookeeper.server.watch;
import java.util.LinkedHashMap;
import java.util.Map;
/**
* A summary of watch information. This class is immutable.
*/
public class WatchesSummary {
/**
* The key in the map returned by {@link #toMap()} for the number of
* connections.
*/
public static final String KEY_NUM_CONNECTIONS = "num_connections";
/**
* The key in the map returned by {@link #toMap()} for the number of paths.
*/
public static final String KEY_NUM_PATHS = "num_paths";
/**
* The key in the map returned by {@link #toMap()} for the total number of
* watches.
*/
public static final String KEY_NUM_TOTAL_WATCHES = "num_total_watches";
private final int numConnections;
private final int numPaths;
private final int totalWatches;
/**
* Creates a new summary.
*
* @param numConnections the number of sessions that have set watches
* @param numPaths the number of paths that have watches set on them
* @param totalWatches the total number of watches set
*/
WatchesSummary(int numConnections, int numPaths, int totalWatches) {
this.numConnections = numConnections;
this.numPaths = numPaths;
this.totalWatches = totalWatches;
}
/**
* Gets the number of connections (sessions) that have set watches.
*
* @return number of connections
*/
public int getNumConnections() {
return numConnections;
}
/**
* Gets the number of paths that have watches set on them.
*
* @return number of paths
*/
public int getNumPaths() {
return numPaths;
}
/**
* Gets the total number of watches set.
*
* @return total watches
*/
public int getTotalWatches() {
return totalWatches;
}
/**
* Converts this summary to a map. The returned map is mutable, and changes
* to it do not reflect back into this summary.
*
* @return map representation of summary
*/
public Map<String, Object> toMap() {
Map<String, Object> summary = new LinkedHashMap<String, Object>();
summary.put(KEY_NUM_CONNECTIONS, numConnections);
summary.put(KEY_NUM_PATHS, numPaths);
summary.put(KEY_NUM_TOTAL_WATCHES, totalWatches);
return summary;
}
}
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