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/*
* 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.transform.transforms;
import org.elasticsearch.Version;
import org.elasticsearch.action.ActionRequestValidationException;
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.ObjectParser.ValueType;
import org.elasticsearch.common.xcontent.ToXContentObject;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.xpack.core.transform.TransformField;
import java.io.IOException;
import java.util.Objects;
import static org.elasticsearch.action.ValidateActions.addValidationError;
import static org.elasticsearch.common.xcontent.ConstructingObjectParser.optionalConstructorArg;
public class SettingsConfig implements Writeable, ToXContentObject {
public static final ConstructingObjectParser STRICT_PARSER = createParser(false);
public static final ConstructingObjectParser LENIENT_PARSER = createParser(true);
private static final int DEFAULT_MAX_PAGE_SEARCH_SIZE = -1;
private static final float DEFAULT_DOCS_PER_SECOND = -1F;
private static final int DEFAULT_DATES_AS_EPOCH_MILLIS = -1;
private static ConstructingObjectParser createParser(boolean lenient) {
ConstructingObjectParser parser = new ConstructingObjectParser<>(
"transform_config_settings",
lenient,
args -> new SettingsConfig((Integer) args[0], (Float) args[1], (Integer) args[2])
);
parser.declareIntOrNull(optionalConstructorArg(), DEFAULT_MAX_PAGE_SEARCH_SIZE, TransformField.MAX_PAGE_SEARCH_SIZE);
parser.declareFloatOrNull(optionalConstructorArg(), DEFAULT_DOCS_PER_SECOND, TransformField.DOCS_PER_SECOND);
// this boolean requires 4 possible values: true, false, not_specified, default, therefore using a custom parser
parser.declareField(
optionalConstructorArg(),
p -> p.currentToken() == XContentParser.Token.VALUE_NULL ? DEFAULT_DATES_AS_EPOCH_MILLIS : p.booleanValue() ? 1 : 0,
TransformField.DATES_AS_EPOCH_MILLIS,
ValueType.BOOLEAN_OR_NULL
);
return parser;
}
private final Integer maxPageSearchSize;
private final Float docsPerSecond;
private final Integer datesAsEpochMillis;
public SettingsConfig() {
this(null, null, (Integer) null);
}
public SettingsConfig(Integer maxPageSearchSize, Float docsPerSecond, Boolean datesAsEpochMillis) {
this(maxPageSearchSize, docsPerSecond, datesAsEpochMillis == null ? null : datesAsEpochMillis ? 1 : 0);
}
public SettingsConfig(Integer maxPageSearchSize, Float docsPerSecond, Integer datesAsEpochMillis) {
this.maxPageSearchSize = maxPageSearchSize;
this.docsPerSecond = docsPerSecond;
this.datesAsEpochMillis = datesAsEpochMillis;
}
public SettingsConfig(final StreamInput in) throws IOException {
this.maxPageSearchSize = in.readOptionalInt();
this.docsPerSecond = in.readOptionalFloat();
if (in.getVersion().onOrAfter(Version.V_7_11_0)) {
this.datesAsEpochMillis = in.readOptionalInt();
} else {
this.datesAsEpochMillis = DEFAULT_DATES_AS_EPOCH_MILLIS;
}
}
public Integer getMaxPageSearchSize() {
return maxPageSearchSize;
}
public Float getDocsPerSecond() {
return docsPerSecond;
}
public Boolean getDatesAsEpochMillis() {
return datesAsEpochMillis != null ? datesAsEpochMillis > 0 : null;
}
public Integer getDatesAsEpochMillisForUpdate() {
return datesAsEpochMillis;
}
public ActionRequestValidationException validate(ActionRequestValidationException validationException) {
// TODO: make this dependent on search.max_buckets
if (maxPageSearchSize != null && (maxPageSearchSize < 10 || maxPageSearchSize > 10_000)) {
validationException = addValidationError(
"settings.max_page_search_size [" + maxPageSearchSize + "] must be greater than 10 and less than 10,000",
validationException
);
}
return validationException;
}
public boolean isValid() {
return true;
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeOptionalInt(maxPageSearchSize);
out.writeOptionalFloat(docsPerSecond);
if (out.getVersion().onOrAfter(Version.V_7_11_0)) {
out.writeOptionalInt(datesAsEpochMillis);
}
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject();
// do not write default values
if (maxPageSearchSize != null && (maxPageSearchSize.equals(DEFAULT_MAX_PAGE_SEARCH_SIZE) == false)) {
builder.field(TransformField.MAX_PAGE_SEARCH_SIZE.getPreferredName(), maxPageSearchSize);
}
if (docsPerSecond != null && (docsPerSecond.equals(DEFAULT_DOCS_PER_SECOND) == false)) {
builder.field(TransformField.DOCS_PER_SECOND.getPreferredName(), docsPerSecond);
}
if (datesAsEpochMillis != null && (datesAsEpochMillis.equals(DEFAULT_DATES_AS_EPOCH_MILLIS) == false)) {
builder.field(TransformField.DATES_AS_EPOCH_MILLIS.getPreferredName(), datesAsEpochMillis > 0 ? true : false);
}
builder.endObject();
return builder;
}
@Override
public boolean equals(Object other) {
if (other == this) {
return true;
}
if (other == null || other.getClass() != getClass()) {
return false;
}
SettingsConfig that = (SettingsConfig) other;
return Objects.equals(maxPageSearchSize, that.maxPageSearchSize)
&& Objects.equals(docsPerSecond, that.docsPerSecond)
&& Objects.equals(datesAsEpochMillis, that.datesAsEpochMillis);
}
@Override
public int hashCode() {
return Objects.hash(maxPageSearchSize, docsPerSecond, datesAsEpochMillis);
}
@Override
public String toString() {
return Strings.toString(this, true, true);
}
public static SettingsConfig fromXContent(final XContentParser parser, boolean lenient) throws IOException {
return lenient ? LENIENT_PARSER.apply(parser, null) : STRICT_PARSER.apply(parser, null);
}
public static class Builder {
private Integer maxPageSearchSize;
private Float docsPerSecond;
private Integer datesAsEpochMillis;
/**
* Default builder
*/
public Builder() {}
/**
* Builder starting from existing settings as base, for the purpose of partially updating settings.
*
* @param base base settings
*/
public Builder(SettingsConfig base) {
this.maxPageSearchSize = base.maxPageSearchSize;
this.docsPerSecond = base.docsPerSecond;
this.datesAsEpochMillis = base.datesAsEpochMillis;
}
/**
* Sets the paging maximum paging maxPageSearchSize that transform can use when
* pulling the data from the source index.
*
* If OOM is triggered, the paging maxPageSearchSize is dynamically reduced so that the transform can continue to gather data.
*
* @param maxPageSearchSize Integer value between 10 and 10_000
* @return the {@link Builder} with the paging maxPageSearchSize set.
*/
public Builder setMaxPageSearchSize(Integer maxPageSearchSize) {
this.maxPageSearchSize = maxPageSearchSize == null ? DEFAULT_MAX_PAGE_SEARCH_SIZE : maxPageSearchSize;
return this;
}
/**
* Sets the docs per second that transform can use when pulling the data from the source index.
*
* This setting throttles transform by issuing queries less often, however processing still happens in
* batches. A value of 0 disables throttling (default).
*
* @param docsPerSecond Integer value
* @return the {@link Builder} with requestsPerSecond set.
*/
public Builder setRequestsPerSecond(Float docsPerSecond) {
this.docsPerSecond = docsPerSecond == null ? DEFAULT_DOCS_PER_SECOND : docsPerSecond;
return this;
}
/**
* Whether to write the output of a date aggregation as millis since epoch or as formatted string (ISO format).
*
* Transforms created before 7.11 write dates as epoch_millis. The new default is ISO string.
* You can use this setter to configure the old style writing as epoch millis.
*
* An explicit `null` resets to default.
*
* @param datesAsEpochMillis true if dates should be written as epoch_millis.
* @return the {@link Builder} with datesAsEpochMilli set.
*/
public Builder setDatesAsEpochMillis(Boolean datesAsEpochMillis) {
this.datesAsEpochMillis = datesAsEpochMillis == null ? DEFAULT_DATES_AS_EPOCH_MILLIS : datesAsEpochMillis ? 1 : 0;
return this;
}
/**
* Update settings according to given settings config.
*
* @param update update settings
* @return the {@link Builder} with applied updates.
*/
public Builder update(SettingsConfig update) {
// if explicit {@code null}s have been set in the update, we do not want to carry the default, but get rid
// of the setting
if (update.getDocsPerSecond() != null) {
this.docsPerSecond = update.getDocsPerSecond().equals(DEFAULT_DOCS_PER_SECOND) ? null : update.getDocsPerSecond();
}
if (update.getMaxPageSearchSize() != null) {
this.maxPageSearchSize = update.getMaxPageSearchSize().equals(DEFAULT_MAX_PAGE_SEARCH_SIZE)
? null
: update.getMaxPageSearchSize();
}
if (update.getDatesAsEpochMillisForUpdate() != null) {
this.datesAsEpochMillis = update.getDatesAsEpochMillisForUpdate().equals(DEFAULT_DATES_AS_EPOCH_MILLIS)
? null
: update.getDatesAsEpochMillisForUpdate();
}
return this;
}
public SettingsConfig build() {
return new SettingsConfig(maxPageSearchSize, docsPerSecond, datesAsEpochMillis);
}
}
}