io.druid.java.util.metrics.CompoundMonitor.java Source code

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Here is the source code for io.druid.java.util.metrics.CompoundMonitor.java

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/*
 * Licensed to Metamarkets Group Inc. (Metamarkets) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. Metamarkets 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 io.druid.java.util.metrics;

import com.google.common.collect.Lists;
import io.druid.java.util.emitter.service.ServiceEmitter;

import java.util.Arrays;
import java.util.List;

public abstract class CompoundMonitor implements Monitor {
    private final List<Monitor> monitors;

    public CompoundMonitor(List<Monitor> monitors) {
        this.monitors = monitors;
    }

    public CompoundMonitor(Monitor... monitors) {
        this(Arrays.asList(monitors));
    }

    @Override
    public void start() {
        for (Monitor monitor : monitors) {
            monitor.start();
        }
    }

    @Override
    public void stop() {
        for (Monitor monitor : monitors) {
            monitor.stop();
        }
    }

    @Override
    public boolean monitor(final ServiceEmitter emitter) {
        return shouldReschedule(Lists.transform(monitors, monitor -> monitor.monitor(emitter)));
    }

    public abstract boolean shouldReschedule(List<Boolean> reschedules);
}