io.druid.server.coordinator.ServerHolder.java Source code

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Here is the source code for io.druid.server.coordinator.ServerHolder.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.server.coordinator;

import com.google.common.primitives.Longs;
import io.druid.client.ImmutableDruidServer;
import io.druid.java.util.common.logger.Logger;
import io.druid.timeline.DataSegment;

import java.util.Objects;

/**
 */
public class ServerHolder implements Comparable<ServerHolder> {
    private static final Logger log = new Logger(ServerHolder.class);
    private final ImmutableDruidServer server;
    private final LoadQueuePeon peon;

    public ServerHolder(ImmutableDruidServer server, LoadQueuePeon peon) {
        this.server = server;
        this.peon = peon;
    }

    public ImmutableDruidServer getServer() {
        return server;
    }

    public LoadQueuePeon getPeon() {
        return peon;
    }

    public long getMaxSize() {
        return server.getMaxSize();
    }

    public long getCurrServerSize() {
        return server.getCurrSize();
    }

    public long getLoadQueueSize() {
        return peon.getLoadQueueSize();
    }

    public long getSizeUsed() {
        return getCurrServerSize() + getLoadQueueSize();
    }

    public double getPercentUsed() {
        return (100.0 * getSizeUsed()) / getMaxSize();
    }

    public long getAvailableSize() {
        long maxSize = getMaxSize();
        long sizeUsed = getSizeUsed();
        long availableSize = maxSize - sizeUsed;

        log.debug("Server[%s], MaxSize[%,d], CurrSize[%,d], QueueSize[%,d], SizeUsed[%,d], AvailableSize[%,d]",
                server.getName(), maxSize, getCurrServerSize(), getLoadQueueSize(), sizeUsed, availableSize);

        return availableSize;
    }

    public boolean isServingSegment(DataSegment segment) {
        return (server.getSegment(segment.getIdentifier()) != null);
    }

    public boolean isLoadingSegment(DataSegment segment) {
        return peon.getSegmentsToLoad().contains(segment);
    }

    public int getNumberOfSegmentsInQueue() {
        return peon.getNumberOfSegmentsInQueue();
    }

    @Override
    public int compareTo(ServerHolder serverHolder) {
        int result = Longs.compare(getAvailableSize(), serverHolder.getAvailableSize());
        if (result != 0) {
            return result;
        }

        result = server.getHost().compareTo(serverHolder.server.getHost());
        if (result != 0) {
            return result;
        }

        result = server.getTier().compareTo(serverHolder.server.getTier());
        if (result != 0) {
            return result;
        }

        return server.getType().compareTo(serverHolder.server.getType());
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }

        ServerHolder that = (ServerHolder) o;

        if (!this.server.getHost().equals(that.server.getHost())) {
            return false;
        }

        if (!this.server.getTier().equals(that.getServer().getTier())) {
            return false;
        }

        return this.server.getType().equals(that.getServer().getType());
    }

    @Override
    public int hashCode() {
        return Objects.hash(server.getHost(), server.getTier(), server.getType());
    }
}