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Elasticsearch Expanded Pack Plugin - Core
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0; you may not use this file except in compliance with the Elastic License
* 2.0.
*/
package org.elasticsearch.xpack.core.ilm;
import org.elasticsearch.client.Client;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.ParseField;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.settings.Setting;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.unit.ByteSizeValue;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.common.xcontent.ConstructingObjectParser;
import org.elasticsearch.common.xcontent.ObjectParser.ValueType;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.xpack.core.ilm.Step.StepKey;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;
import java.util.Objects;
/**
* A {@link LifecycleAction} which rolls over the index.
*/
public class RolloverAction implements LifecycleAction {
public static final String NAME = "rollover";
public static final String INDEXING_COMPLETE_STEP_NAME = "set-indexing-complete";
public static final ParseField MAX_SIZE_FIELD = new ParseField("max_size");
public static final ParseField MAX_DOCS_FIELD = new ParseField("max_docs");
public static final ParseField MAX_AGE_FIELD = new ParseField("max_age");
public static final String LIFECYCLE_ROLLOVER_ALIAS = "index.lifecycle.rollover_alias";
public static final Setting LIFECYCLE_ROLLOVER_ALIAS_SETTING = Setting.simpleString(LIFECYCLE_ROLLOVER_ALIAS,
Setting.Property.Dynamic, Setting.Property.IndexScope);
private static final ConstructingObjectParser PARSER = new ConstructingObjectParser<>(NAME,
a -> new RolloverAction((ByteSizeValue) a[0], (TimeValue) a[1], (Long) a[2]));
static {
PARSER.declareField(ConstructingObjectParser.optionalConstructorArg(),
(p, c) -> ByteSizeValue.parseBytesSizeValue(p.text(), MAX_SIZE_FIELD.getPreferredName()), MAX_SIZE_FIELD, ValueType.VALUE);
PARSER.declareField(ConstructingObjectParser.optionalConstructorArg(),
(p, c) -> TimeValue.parseTimeValue(p.text(), MAX_AGE_FIELD.getPreferredName()), MAX_AGE_FIELD, ValueType.VALUE);
PARSER.declareLong(ConstructingObjectParser.optionalConstructorArg(), MAX_DOCS_FIELD);
}
private final ByteSizeValue maxSize;
private final Long maxDocs;
private final TimeValue maxAge;
public static RolloverAction parse(XContentParser parser) {
return PARSER.apply(parser, null);
}
public RolloverAction(@Nullable ByteSizeValue maxSize, @Nullable TimeValue maxAge, @Nullable Long maxDocs) {
if (maxSize == null && maxAge == null && maxDocs == null) {
throw new IllegalArgumentException("At least one rollover condition must be set.");
}
this.maxSize = maxSize;
this.maxAge = maxAge;
this.maxDocs = maxDocs;
}
public RolloverAction(StreamInput in) throws IOException {
if (in.readBoolean()) {
maxSize = new ByteSizeValue(in);
} else {
maxSize = null;
}
maxAge = in.readOptionalTimeValue();
if (in.readBoolean()) {
maxDocs = in.readVLong();
} else {
maxDocs = null;
}
}
@Override
public void writeTo(StreamOutput out) throws IOException {
boolean hasMaxSize = maxSize != null;
out.writeBoolean(hasMaxSize);
if (hasMaxSize) {
maxSize.writeTo(out);
}
out.writeOptionalTimeValue(maxAge);
boolean hasMaxDocs = maxDocs != null;
out.writeBoolean(hasMaxDocs);
if (hasMaxDocs) {
out.writeVLong(maxDocs);
}
}
@Override
public String getWriteableName() {
return NAME;
}
public ByteSizeValue getMaxSize() {
return maxSize;
}
public TimeValue getMaxAge() {
return maxAge;
}
public Long getMaxDocs() {
return maxDocs;
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject();
if (maxSize != null) {
builder.field(MAX_SIZE_FIELD.getPreferredName(), maxSize.getStringRep());
}
if (maxAge != null) {
builder.field(MAX_AGE_FIELD.getPreferredName(), maxAge.getStringRep());
}
if (maxDocs != null) {
builder.field(MAX_DOCS_FIELD.getPreferredName(), maxDocs);
}
builder.endObject();
return builder;
}
@Override
public boolean isSafeAction() {
return true;
}
@Override
public List toSteps(Client client, String phase, Step.StepKey nextStepKey) {
Settings indexingComplete = Settings.builder().put(LifecycleSettings.LIFECYCLE_INDEXING_COMPLETE, true).build();
StepKey waitForRolloverReadyStepKey = new StepKey(phase, NAME, WaitForRolloverReadyStep.NAME);
StepKey rolloverStepKey = new StepKey(phase, NAME, RolloverStep.NAME);
StepKey waitForActiveShardsKey = new StepKey(phase, NAME, WaitForActiveShardsStep.NAME);
StepKey updateDateStepKey = new StepKey(phase, NAME, UpdateRolloverLifecycleDateStep.NAME);
StepKey setIndexingCompleteStepKey = new StepKey(phase, NAME, INDEXING_COMPLETE_STEP_NAME);
WaitForRolloverReadyStep waitForRolloverReadyStep = new WaitForRolloverReadyStep(waitForRolloverReadyStepKey, rolloverStepKey,
client, maxSize, maxAge, maxDocs);
RolloverStep rolloverStep = new RolloverStep(rolloverStepKey, waitForActiveShardsKey, client);
WaitForActiveShardsStep waitForActiveShardsStep = new WaitForActiveShardsStep(waitForActiveShardsKey, updateDateStepKey);
UpdateRolloverLifecycleDateStep updateDateStep = new UpdateRolloverLifecycleDateStep(updateDateStepKey, setIndexingCompleteStepKey,
System::currentTimeMillis);
UpdateSettingsStep setIndexingCompleteStep = new UpdateSettingsStep(setIndexingCompleteStepKey, nextStepKey,
client, indexingComplete);
return Arrays.asList(waitForRolloverReadyStep, rolloverStep, waitForActiveShardsStep, updateDateStep, setIndexingCompleteStep);
}
@Override
public int hashCode() {
return Objects.hash(maxSize, maxAge, maxDocs);
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (obj.getClass() != getClass()) {
return false;
}
RolloverAction other = (RolloverAction) obj;
return Objects.equals(maxSize, other.maxSize) &&
Objects.equals(maxAge, other.maxAge) &&
Objects.equals(maxDocs, other.maxDocs);
}
@Override
public String toString() {
return Strings.toString(this);
}
}