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org.elasticsearch.xpack.core.ilm.AllocateAction Maven / Gradle / Ivy
/*
* 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.cluster.metadata.IndexMetadata;
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.Settings;
import org.elasticsearch.common.xcontent.ConstructingObjectParser;
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.Collections;
import java.util.List;
import java.util.Map;
import java.util.Objects;
public class AllocateAction implements LifecycleAction {
public static final String NAME = "allocate";
public static final ParseField NUMBER_OF_REPLICAS_FIELD = new ParseField("number_of_replicas");
public static final ParseField INCLUDE_FIELD = new ParseField("include");
public static final ParseField EXCLUDE_FIELD = new ParseField("exclude");
public static final ParseField REQUIRE_FIELD = new ParseField("require");
@SuppressWarnings("unchecked")
private static final ConstructingObjectParser PARSER = new ConstructingObjectParser<>(NAME,
a -> new AllocateAction((Integer) a[0], (Map) a[1], (Map) a[2], (Map) a[3]));
static {
PARSER.declareInt(ConstructingObjectParser.optionalConstructorArg(), NUMBER_OF_REPLICAS_FIELD);
PARSER.declareObject(ConstructingObjectParser.optionalConstructorArg(), (p, c) -> p.mapStrings(), INCLUDE_FIELD);
PARSER.declareObject(ConstructingObjectParser.optionalConstructorArg(), (p, c) -> p.mapStrings(), EXCLUDE_FIELD);
PARSER.declareObject(ConstructingObjectParser.optionalConstructorArg(), (p, c) -> p.mapStrings(), REQUIRE_FIELD);
}
private final Integer numberOfReplicas;
private final Map include;
private final Map exclude;
private final Map require;
public static AllocateAction parse(XContentParser parser) {
return PARSER.apply(parser, null);
}
public AllocateAction(Integer numberOfReplicas, Map include, Map exclude, Map require) {
if (include == null) {
this.include = Collections.emptyMap();
} else {
this.include = include;
}
if (exclude == null) {
this.exclude = Collections.emptyMap();
} else {
this.exclude = exclude;
}
if (require == null) {
this.require = Collections.emptyMap();
} else {
this.require = require;
}
if (this.include.isEmpty() && this.exclude.isEmpty() && this.require.isEmpty() && numberOfReplicas == null) {
throw new IllegalArgumentException(
"At least one of " + INCLUDE_FIELD.getPreferredName() + ", " + EXCLUDE_FIELD.getPreferredName() + " or "
+ REQUIRE_FIELD.getPreferredName() + "must contain attributes for action " + NAME);
}
if (numberOfReplicas != null && numberOfReplicas < 0) {
throw new IllegalArgumentException("[" + NUMBER_OF_REPLICAS_FIELD.getPreferredName() + "] must be >= 0");
}
this.numberOfReplicas = numberOfReplicas;
}
@SuppressWarnings("unchecked")
public AllocateAction(StreamInput in) throws IOException {
this(in.readOptionalVInt(), (Map) in.readGenericValue(), (Map) in.readGenericValue(),
(Map) in.readGenericValue());
}
public Integer getNumberOfReplicas() {
return numberOfReplicas;
}
public Map getInclude() {
return include;
}
public Map getExclude() {
return exclude;
}
public Map getRequire() {
return require;
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeOptionalVInt(numberOfReplicas);
out.writeGenericValue(include);
out.writeGenericValue(exclude);
out.writeGenericValue(require);
}
@Override
public String getWriteableName() {
return NAME;
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject();
if (numberOfReplicas != null) {
builder.field(NUMBER_OF_REPLICAS_FIELD.getPreferredName(), numberOfReplicas);
}
builder.field(INCLUDE_FIELD.getPreferredName(), include);
builder.field(EXCLUDE_FIELD.getPreferredName(), exclude);
builder.field(REQUIRE_FIELD.getPreferredName(), require);
builder.endObject();
return builder;
}
@Override
public boolean isSafeAction() {
return true;
}
@Override
public List toSteps(Client client, String phase, StepKey nextStepKey) {
StepKey allocateKey = new StepKey(phase, NAME, NAME);
StepKey allocationRoutedKey = new StepKey(phase, NAME, AllocationRoutedStep.NAME);
Settings.Builder newSettings = Settings.builder();
if (numberOfReplicas != null) {
newSettings.put(IndexMetadata.SETTING_NUMBER_OF_REPLICAS, numberOfReplicas);
}
include.forEach((key, value) -> newSettings.put(IndexMetadata.INDEX_ROUTING_INCLUDE_GROUP_SETTING.getKey() + key, value));
exclude.forEach((key, value) -> newSettings.put(IndexMetadata.INDEX_ROUTING_EXCLUDE_GROUP_SETTING.getKey() + key, value));
require.forEach((key, value) -> newSettings.put(IndexMetadata.INDEX_ROUTING_REQUIRE_GROUP_SETTING.getKey() + key, value));
UpdateSettingsStep allocateStep = new UpdateSettingsStep(allocateKey, allocationRoutedKey, client, newSettings.build());
AllocationRoutedStep routedCheckStep = new AllocationRoutedStep(allocationRoutedKey, nextStepKey);
return Arrays.asList(allocateStep, routedCheckStep);
}
@Override
public int hashCode() {
return Objects.hash(numberOfReplicas, include, exclude, require);
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (obj.getClass() != getClass()) {
return false;
}
AllocateAction other = (AllocateAction) obj;
return Objects.equals(numberOfReplicas, other.numberOfReplicas) &&
Objects.equals(include, other.include) &&
Objects.equals(exclude, other.exclude) &&
Objects.equals(require, other.require);
}
@Override
public String toString() {
return Strings.toString(this);
}
}