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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.model.builder.xml.dom;
import com.yahoo.config.model.ConfigModelContext;
import com.yahoo.config.model.api.ConfigServerSpec;
import com.yahoo.config.model.producer.AbstractConfigProducer;
import com.yahoo.text.XML;
import com.yahoo.log.LogLevel;
import com.yahoo.vespa.model.SimpleConfigProducer;
import com.yahoo.vespa.model.admin.Admin;
import com.yahoo.vespa.model.admin.Configserver;
import com.yahoo.vespa.model.admin.Logserver;
import com.yahoo.vespa.model.admin.Slobrok;
import com.yahoo.vespa.model.admin.clustercontroller.ClusterControllerCluster;
import com.yahoo.vespa.model.admin.clustercontroller.ClusterControllerContainer;
import com.yahoo.vespa.model.admin.clustercontroller.ClusterControllerClusterVerifier;
import com.yahoo.vespa.model.builder.xml.dom.VespaDomBuilder.DomConfigProducerBuilder;
import com.yahoo.vespa.model.container.Container;
import com.yahoo.vespa.model.container.ContainerCluster;
import com.yahoo.vespa.model.container.xml.ContainerModelBuilder;
import com.yahoo.config.application.api.FileRegistry;
import org.w3c.dom.Element;
import java.util.List;
import java.util.ArrayList;
import java.util.logging.Level;
/**
* Builds the admin model from a V2 admin XML tag.
*
* @author vegardh
*/
public class DomAdminV2Builder extends DomAdminBuilderBase {
private static final String ATTRIBUTE_CLUSTER_CONTROLLER_STANDALONE_ZK = "standalone-zookeeper";
public DomAdminV2Builder(ConfigModelContext.ApplicationType applicationType,
FileRegistry fileRegistry,
boolean multitenant,
List<ConfigServerSpec> configServerSpecs) {
super(applicationType, fileRegistry, multitenant, configServerSpecs);
}
@Override
protected void doBuildAdmin(Admin admin, Element adminE) {
List<Configserver> configservers = parseConfigservers(admin, adminE);
admin.setLogserver(parseLogserver(admin, adminE));
admin.addConfigservers(configservers);
admin.addSlobroks(getSlobroks(admin, XML.getChild(adminE, "slobroks")));
if ( ! admin.multitenant())
admin.setClusterControllers(addConfiguredClusterControllers(admin, adminE));
ModelElement adminElement = new ModelElement(adminE);
addLogForwarders(adminElement.getChild("logforwarding"), admin);
}
private List<Configserver> parseConfigservers(Admin admin, Element adminE) {
List<Configserver> configservers;
if (multitenant) {
configservers = getConfigServersFromSpec(admin);
} else {
configservers = getConfigServers(admin, adminE);
}
int count = configservers.size();
if (count % 2 == 0) {
admin.deployLogger().log(Level.WARNING, "An even number (" + count + ") of config servers have been configured. " +
"This is discouraged, see doc for configuration server ");
}
return configservers;
}
private Logserver parseLogserver(Admin admin, Element adminE) {
Element logserverE = XML.getChild(adminE, "logserver");
if (logserverE == null) {
logserverE = XML.getChild(adminE, "adminserver");
}
return new LogserverBuilder().build(admin, logserverE);
}
private ContainerCluster addConfiguredClusterControllers(AbstractConfigProducer parent, Element admin) {
Element controllersElements = XML.getChild(admin, "cluster-controllers");
if (controllersElements == null) return null;
List<Element> controllers = XML.getChildren(controllersElements, "cluster-controller");
if (controllers.isEmpty()) return null;
boolean standaloneZooKeeper = "true".equals(controllersElements.getAttribute(ATTRIBUTE_CLUSTER_CONTROLLER_STANDALONE_ZK)) || multitenant;
if (standaloneZooKeeper) {
parent = new ClusterControllerCluster(parent, "standalone");
}
ContainerCluster cluster = new ContainerCluster(parent, "cluster-controllers", "cluster-controllers", new ClusterControllerClusterVerifier());
ContainerModelBuilder.addDefaultHandler_legacyBuilder(cluster);
List<Container> containers = new ArrayList<>();
for (Element controller : controllers) {
ClusterControllerContainer clusterController = new ClusterControllerBuilder(containers.size(), standaloneZooKeeper).build(cluster, controller);
containers.add(clusterController);
}
cluster.addContainers(containers);
return cluster;
}
// Extra stupid because configservers tag is voluntary
private List<Configserver> getConfigServers(AbstractConfigProducer parent, Element adminE) {
SimpleConfigProducer configServers = new SimpleConfigProducer(parent, "configservers");
List<Configserver> cfgs = new ArrayList<>();
Element configserversE = XML.getChild(adminE, "configservers");
if (configserversE == null) {
Element configserverE = XML.getChild(adminE, "configserver");
if (configserverE == null) {
configserverE = XML.getChild(adminE, "adminserver");
} else {
parent.deployLogger().log(LogLevel.INFO, "Specifying configserver without parent element configservers in services.xml is deprecated");
}
Configserver cfgs0 = new ConfigserverBuilder(0).build(configServers, configserverE);
cfgs0.setProp("index", 0);
cfgs.add(cfgs0);
return cfgs;
}
// configservers tag in use
int i = 0;
for (Element configserverE : XML.getChildren(configserversE, "configserver")) {
Configserver cfgsrv = new ConfigserverBuilder(i).build(configServers, configserverE);
cfgsrv.setProp("index", i);
cfgs.add(cfgsrv);
i++;
}
return cfgs;
}
private List<Slobrok> getSlobroks(AbstractConfigProducer parent, Element slobroksE) {
List<Slobrok> slobs = new ArrayList<>();
if (slobroksE != null) {
slobs = getExplicitSlobrokSetup(parent, slobroksE);
}
return slobs;
}
private List<Slobrok> getExplicitSlobrokSetup(AbstractConfigProducer parent, Element slobroksE) {
List<Slobrok> slobs = new ArrayList<>();
List<Element> slobsE = XML.getChildren(slobroksE, "slobrok");
int i = 0;
for (Element e : slobsE) {
Slobrok slob = new SlobrokBuilder(i).build(parent, e);
slobs.add(slob);
i++;
}
return slobs;
}
private static class LogserverBuilder extends DomConfigProducerBuilder<Logserver> {
public LogserverBuilder() {
}
@Override
protected Logserver doBuild(AbstractConfigProducer parent, Element producerSpec) {
return new Logserver(parent);
}
}
private static class ConfigserverBuilder extends DomConfigProducerBuilder<Configserver> {
int i;
public ConfigserverBuilder(int i) {
this.i = i;
}
@Override
protected Configserver doBuild(AbstractConfigProducer parent,
Element spec) {
return new Configserver(parent, "configserver." + i);
}
}
private static class SlobrokBuilder extends DomConfigProducerBuilder<Slobrok> {
int i;
public SlobrokBuilder(int i) {
this.i = i;
}
@Override
protected Slobrok doBuild(AbstractConfigProducer parent,
Element spec) {
return new Slobrok(parent, i);
}
}
private static class ClusterControllerBuilder extends DomConfigProducerBuilder<ClusterControllerContainer> {
int i;
boolean runStandaloneZooKeeper;
public ClusterControllerBuilder(int i, boolean runStandaloneZooKeeper) {
this.i = i;
this.runStandaloneZooKeeper = runStandaloneZooKeeper;
}
@Override
protected ClusterControllerContainer doBuild(AbstractConfigProducer parent,
Element spec) {
return new ClusterControllerContainer(parent, i, runStandaloneZooKeeper);
}
}
}
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