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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.cluster.health;
import org.elasticsearch.cluster.routing.IndexShardRoutingTable;
import org.elasticsearch.cluster.routing.ShardRouting;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.io.stream.Streamable;
import java.io.IOException;
public final class ClusterShardHealth implements Streamable {
private int shardId;
ClusterHealthStatus status = ClusterHealthStatus.RED;
private int activeShards = 0;
private int relocatingShards = 0;
private int initializingShards = 0;
private int unassignedShards = 0;
private boolean primaryActive = false;
private ClusterShardHealth() {
}
public ClusterShardHealth(int shardId, final IndexShardRoutingTable shardRoutingTable) {
this.shardId = shardId;
for (ShardRouting shardRouting : shardRoutingTable) {
if (shardRouting.active()) {
activeShards++;
if (shardRouting.relocating()) {
// the shard is relocating, the one it is relocating to will be in initializing state, so we don't count it
relocatingShards++;
}
if (shardRouting.primary()) {
primaryActive = true;
}
} else if (shardRouting.initializing()) {
initializingShards++;
} else if (shardRouting.unassigned()) {
unassignedShards++;
}
}
if (primaryActive) {
if (activeShards == shardRoutingTable.size()) {
status = ClusterHealthStatus.GREEN;
} else {
status = ClusterHealthStatus.YELLOW;
}
} else {
status = ClusterHealthStatus.RED;
}
}
public int getId() {
return shardId;
}
public ClusterHealthStatus getStatus() {
return status;
}
public int getRelocatingShards() {
return relocatingShards;
}
public int getActiveShards() {
return activeShards;
}
public boolean isPrimaryActive() {
return primaryActive;
}
public int getInitializingShards() {
return initializingShards;
}
public int getUnassignedShards() {
return unassignedShards;
}
static ClusterShardHealth readClusterShardHealth(StreamInput in) throws IOException {
ClusterShardHealth ret = new ClusterShardHealth();
ret.readFrom(in);
return ret;
}
@Override
public void readFrom(StreamInput in) throws IOException {
shardId = in.readVInt();
status = ClusterHealthStatus.fromValue(in.readByte());
activeShards = in.readVInt();
relocatingShards = in.readVInt();
initializingShards = in.readVInt();
unassignedShards = in.readVInt();
primaryActive = in.readBoolean();
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeVInt(shardId);
out.writeByte(status.value());
out.writeVInt(activeShards);
out.writeVInt(relocatingShards);
out.writeVInt(initializingShards);
out.writeVInt(unassignedShards);
out.writeBoolean(primaryActive);
}
}