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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.model.container.xml;
import com.yahoo.config.model.deploy.DeployState;
import com.yahoo.config.model.producer.AnyConfigProducer;
import com.yahoo.config.model.producer.TreeConfigProducer;
import com.yahoo.vespa.model.builder.xml.dom.VespaDomBuilder;
import com.yahoo.vespa.model.container.ContainerCluster;
import com.yahoo.vespa.model.container.component.AccessLogComponent;
import com.yahoo.vespa.model.container.component.AccessLogComponent.AccessLogType;
import org.w3c.dom.Element;
import java.util.Optional;
import static com.yahoo.collections.CollectionUtil.firstMatching;
import static com.yahoo.config.model.builder.xml.XmlHelper.getOptionalAttribute;
import static com.yahoo.config.model.builder.xml.XmlHelper.nullIfEmpty;
/**
* @author Tony Vaagenes
*/
public class AccessLogBuilder {
/*
* Valid values for the type attribute in services.xml
* Must be kept in sync with containercluster.rnc:AccessLog
*/
private enum AccessLogTypeLiteral {
VESPA("vespa"),
JSON("json"),
DISABLED("disabled");
final String attributeValue;
AccessLogTypeLiteral(String attributeValue) {
this.attributeValue = attributeValue;
}
static AccessLogTypeLiteral fromAttributeValue(String value) {
return firstMatching(
AccessLogTypeLiteral.values(),
typeLiteral -> typeLiteral.attributeValue.equals(value)).get();
}
}
private static class DomBuilder extends VespaDomBuilder.DomConfigProducerBuilderBase<AccessLogComponent> {
private final AccessLogType accessLogType;
private final boolean isHostedVespa;
public DomBuilder(AccessLogType accessLogType, boolean isHostedVespa) {
this.accessLogType = accessLogType;
this.isHostedVespa = isHostedVespa;
}
@Override
protected AccessLogComponent doBuild(DeployState deployState, TreeConfigProducer<AnyConfigProducer> ancestor, Element spec) {
String fallback = deployState.featureFlags().logFileCompressionAlgorithm("zstd");
return new AccessLogComponent(
accessLogType,
compressionType(spec, fallback),
fileNamePattern(spec),
rotationInterval(spec),
compressOnRotation(spec),
isHostedVespa,
symlinkName(spec),
queueSize(spec),
bufferSize(spec));
}
private String symlinkName(Element spec) {
return nullIfEmpty(spec.getAttribute("symlinkName"));
}
private Boolean compressOnRotation(Element spec) {
String compress = spec.getAttribute("compressOnRotation");
return (compress.isEmpty() ? null : Boolean.parseBoolean(compress));
}
private Integer bufferSize(Element spec) {
String value = spec.getAttribute("bufferSize");
return (value.isEmpty() ? null : Integer.parseInt(value));
}
private Integer queueSize(Element spec) {
String value = spec.getAttribute("queueSize");
return (value.isEmpty() ? null : Integer.parseInt(value));
}
private String rotationInterval(Element spec) {
return nullIfEmpty(spec.getAttribute("rotationInterval"));
}
private String fileNamePattern(Element spec) {
return nullIfEmpty(spec.getAttribute("fileNamePattern"));
}
private static String compressionType(Element spec, String fallback) {
return Optional.ofNullable(spec.getAttribute("compressionType"))
.filter(value -> !value.isBlank())
.orElse(fallback);
}
}
private static AccessLogType logTypeFor(AccessLogTypeLiteral typeLiteral) {
return switch (typeLiteral) {
case DISABLED -> null;
case VESPA -> AccessLogType.queryAccessLog;
case JSON -> AccessLogType.jsonAccessLog;
};
}
public static Optional<AccessLogComponent> buildIfNotDisabled(DeployState deployState, ContainerCluster<?> cluster, Element accessLogSpec) {
AccessLogTypeLiteral typeLiteral =
getOptionalAttribute(accessLogSpec, "type").
map(AccessLogTypeLiteral::fromAttributeValue).
orElse(AccessLogTypeLiteral.JSON);
AccessLogType logType = logTypeFor(typeLiteral);
if (logType == null) {
return Optional.empty();
}
boolean hosted = cluster.isHostedVespa();
return Optional.of(new DomBuilder(logType, hosted).build(deployState, cluster, accessLogSpec));
}
}
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