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Expose retention leases in shard stats (#37991)
This commit exposes retention leases via shard-level stats.
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124 changes: 124 additions & 0 deletions
124
server/src/main/java/org/elasticsearch/index/seqno/RetentionLeaseStats.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,124 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
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| package org.elasticsearch.index.seqno; | ||
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| import org.elasticsearch.common.io.stream.StreamInput; | ||
| import org.elasticsearch.common.io.stream.StreamOutput; | ||
| import org.elasticsearch.common.io.stream.Writeable; | ||
| import org.elasticsearch.common.xcontent.ToXContentFragment; | ||
| import org.elasticsearch.common.xcontent.XContentBuilder; | ||
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| import java.io.IOException; | ||
| import java.util.Collection; | ||
| import java.util.Objects; | ||
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| /** | ||
| * Represents retention lease stats. | ||
| */ | ||
| public final class RetentionLeaseStats implements ToXContentFragment, Writeable { | ||
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| private final Collection<RetentionLease> leases; | ||
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| /** | ||
| * The underlying retention leases backing this stats object. | ||
| * | ||
| * @return the leases | ||
| */ | ||
| public Collection<RetentionLease> leases() { | ||
| return leases; | ||
| } | ||
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| /** | ||
| * Constructs a new retention lease stats object from the specified leases. | ||
| * | ||
| * @param leases the leases | ||
| */ | ||
| public RetentionLeaseStats(final Collection<RetentionLease> leases) { | ||
| this.leases = Objects.requireNonNull(leases); | ||
| } | ||
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| /** | ||
| * Constructs a new retention lease stats object from a stream. The retention lease stats should have been written via | ||
| * {@link #writeTo(StreamOutput)}. | ||
| * | ||
| * @param in the stream to construct the retention lease stats from | ||
| * @throws IOException if an I/O exception occurs reading from the stream | ||
| */ | ||
| public RetentionLeaseStats(final StreamInput in) throws IOException { | ||
| leases = in.readList(RetentionLease::new); | ||
| } | ||
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| /** | ||
| * Writes a retention lease stats object to a stream in a manner suitable for later reconstruction via | ||
| * {@link #RetentionLeaseStats(StreamInput)} (StreamInput)}. | ||
| * | ||
| * @param out the stream to write the retention lease stats to | ||
| * @throws IOException if an I/O exception occurs writing to the stream | ||
| */ | ||
| @Override | ||
| public void writeTo(final StreamOutput out) throws IOException { | ||
| out.writeCollection(leases); | ||
| } | ||
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| /** | ||
| * Converts the retention lease stats to {@link org.elasticsearch.common.xcontent.XContent} using the specified builder and pararms. | ||
| * | ||
| * @param builder the builder | ||
| * @param params the params | ||
| * @return the builder that these retention leases were converted to {@link org.elasticsearch.common.xcontent.XContent} into | ||
| * @throws IOException if an I/O exception occurs writing to the builder | ||
| */ | ||
| @Override | ||
| public XContentBuilder toXContent(final XContentBuilder builder, final Params params) throws IOException { | ||
| builder.startObject("retention_leases"); | ||
| { | ||
| builder.startArray("leases"); | ||
| { | ||
| for (final RetentionLease retentionLease : leases) { | ||
| builder.startObject(); | ||
| { | ||
| builder.field("id", retentionLease.id()); | ||
| builder.field("retaining_seq_no", retentionLease.retainingSequenceNumber()); | ||
| builder.field("timestamp", retentionLease.timestamp()); | ||
| builder.field("source", retentionLease.source()); | ||
| } | ||
| builder.endObject(); | ||
| } | ||
| } | ||
| builder.endArray(); | ||
| } | ||
| builder.endObject(); | ||
| return builder; | ||
| } | ||
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| @Override | ||
| public boolean equals(Object o) { | ||
| if (this == o) return true; | ||
| if (o == null || getClass() != o.getClass()) return false; | ||
| final RetentionLeaseStats that = (RetentionLeaseStats) o; | ||
| return Objects.equals(leases, that.leases); | ||
| } | ||
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| @Override | ||
| public int hashCode() { | ||
| return Objects.hash(leases); | ||
| } | ||
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| } |
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