org.elasticsearch.xpack.core.ilm.Step 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.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.io.stream.Writeable;
import org.elasticsearch.common.xcontent.ConstructingObjectParser;
import org.elasticsearch.common.xcontent.ToXContentObject;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentParser;
import java.io.IOException;
import java.util.Objects;
/**
* Represents one part of the execution of a {@link LifecycleAction}.
*/
public abstract class Step {
private final StepKey key;
private final StepKey nextStepKey;
public Step(StepKey key, StepKey nextStepKey) {
this.key = key;
this.nextStepKey = nextStepKey;
}
public final StepKey getKey() {
return key;
}
public StepKey getNextStepKey() {
return nextStepKey;
}
/**
* Indicates if the step can be automatically retried when it encounters an execution error.
*/
public boolean isRetryable() {
return false;
}
@Override
public int hashCode() {
return Objects.hash(key, nextStepKey);
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
Step other = (Step) obj;
return Objects.equals(key, other.key) &&
Objects.equals(nextStepKey, other.nextStepKey);
}
@Override
public String toString() {
return key + " => " + nextStepKey;
}
public static final class StepKey implements Writeable, ToXContentObject {
private final String phase;
private final String action;
private final String name;
public static final ParseField PHASE_FIELD = new ParseField("phase");
public static final ParseField ACTION_FIELD = new ParseField("action");
public static final ParseField NAME_FIELD = new ParseField("name");
private static final ConstructingObjectParser PARSER =
new ConstructingObjectParser<>("stepkey", a -> new StepKey((String) a[0], (String) a[1], (String) a[2]));
static {
PARSER.declareString(ConstructingObjectParser.constructorArg(), PHASE_FIELD);
PARSER.declareString(ConstructingObjectParser.constructorArg(), ACTION_FIELD);
PARSER.declareString(ConstructingObjectParser.constructorArg(), NAME_FIELD);
}
public StepKey(String phase, String action, String name) {
this.phase = phase;
this.action = action;
this.name = name;
}
public StepKey(StreamInput in) throws IOException {
this.phase = in.readString();
this.action = in.readString();
this.name = in.readString();
}
public static StepKey parse(XContentParser parser) {
return PARSER.apply(parser, null);
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeString(phase);
out.writeString(action);
out.writeString(name);
}
public String getPhase() {
return phase;
}
public String getAction() {
return action;
}
public String getName() {
return name;
}
@Override
public int hashCode() {
return Objects.hash(phase, action, name);
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
StepKey other = (StepKey) obj;
return Objects.equals(phase, other.phase) &&
Objects.equals(action, other.action) &&
Objects.equals(name, other.name);
}
@Override
public String toString() {
return Strings.toString(this);
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject();
builder.field(PHASE_FIELD.getPreferredName(), phase);
builder.field(ACTION_FIELD.getPreferredName(), action);
builder.field(NAME_FIELD.getPreferredName(), name);
builder.endObject();
return builder;
}
}
}