ReplicationMetrics.java

/**
 * Copyright 2016 Yahoo Inc.
 *
 * 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.yahoo.pulsar.broker.stats;

import com.google.common.collect.Maps;
import com.yahoo.pulsar.common.stats.Metrics;

import io.netty.util.Recycler;
import java.util.Map;
import io.netty.util.Recycler.Handle;

/**
 */
public class ReplicationMetrics {
    public double msgRateOut;
    public double msgThroughputOut;
    public double msgReplBacklog;
    public int connected;

    public void reset() {
        msgRateOut = 0;
        msgThroughputOut = 0;
        msgReplBacklog = 0;
        connected = 0;
    }

    public static ReplicationMetrics get() {
        ReplicationMetrics replicationMetrics = RECYCLER.get();
        replicationMetrics.reset();
        return replicationMetrics;
    }

    private final Handle recyclerHandle;

    private ReplicationMetrics(Handle recyclerHandle) {
        this.recyclerHandle = recyclerHandle;
    }

    private static final Recycler<ReplicationMetrics> RECYCLER = new Recycler<ReplicationMetrics>() {
        @Override
        protected ReplicationMetrics newObject(Recycler.Handle handle) {
            return new ReplicationMetrics(handle);
        }
    };

    public void recycle() {
        msgRateOut = -1;
        msgThroughputOut = -1;
        msgReplBacklog = -1;
        connected = -1;
        RECYCLER.recycle(this, recyclerHandle);
    }

    public Metrics add(String namespace, String local, String remote) {

        Map<String, String> dimensionMap = Maps.newHashMap();
        dimensionMap.put("namespace", namespace);
        dimensionMap.put("from_cluster", local);
        dimensionMap.put("to_cluster", remote);
        Metrics dMetrics = Metrics.create(dimensionMap);

        dMetrics.put("brk_repl_out_rate", msgRateOut);
        dMetrics.put("brk_repl_out_tp_rate", msgThroughputOut);
        dMetrics.put("brk_replication_backlog", msgReplBacklog);
        dMetrics.put("brk_repl_is_connected", connected);

        return dMetrics;

    }
}