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// Copyright Yahoo. 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.application.api.DeployLogger;
import com.yahoo.config.model.deploy.DeployState;
import com.yahoo.config.model.producer.AnyConfigProducer;
import com.yahoo.config.model.producer.TreeConfigProducer;
import com.yahoo.container.bundle.BundleInstantiationSpecification;
import com.yahoo.osgi.provider.model.ComponentModel;
import com.yahoo.text.XML;
import com.yahoo.vespa.model.container.ApplicationContainerCluster;
import com.yahoo.vespa.model.container.component.BindingPattern;
import com.yahoo.vespa.model.container.component.Handler;
import com.yahoo.vespa.model.container.component.UserBindingPattern;
import com.yahoo.vespa.model.container.xml.BundleInstantiationSpecificationBuilder;
import org.w3c.dom.Element;
import java.util.Collection;
import java.util.Set;
import static com.yahoo.vespa.model.container.ApplicationContainerCluster.METRICS_V2_HANDLER_BINDING_1;
import static com.yahoo.vespa.model.container.ApplicationContainerCluster.METRICS_V2_HANDLER_BINDING_2;
import static com.yahoo.vespa.model.container.ContainerCluster.STATE_HANDLER_BINDING_1;
import static com.yahoo.vespa.model.container.ContainerCluster.STATE_HANDLER_BINDING_2;
import static com.yahoo.vespa.model.container.ContainerCluster.VIP_HANDLER_BINDING;
import static java.util.logging.Level.INFO;
/**
* @author gjoranv
*/
public class DomHandlerBuilder extends VespaDomBuilder.DomConfigProducerBuilderBase<Handler> {
private static final Set<BindingPattern> reservedBindings =
Set.of(METRICS_V2_HANDLER_BINDING_1,
METRICS_V2_HANDLER_BINDING_2,
STATE_HANDLER_BINDING_1,
STATE_HANDLER_BINDING_2,
VIP_HANDLER_BINDING);
private final ApplicationContainerCluster cluster;
private final Set<Integer> portBindingOverride;
public DomHandlerBuilder(ApplicationContainerCluster cluster, Set<Integer> portBindingOverride) {
this.cluster = cluster;
this.portBindingOverride = portBindingOverride;
}
@Override
protected Handler doBuild(DeployState deployState, TreeConfigProducer<AnyConfigProducer> parent, Element handlerElement) {
Handler handler = createHandler(handlerElement);
var ports = deployState.isHosted()
? portBindingOverride : Set.<Integer>of();
for (Element xmlBinding : XML.getChildren(handlerElement, "binding"))
for (var binding : userBindingPattern(XML.getValue(xmlBinding), ports))
addServerBinding(handler, binding, deployState.getDeployLogger());
DomComponentBuilder.addChildren(deployState, parent, handlerElement, handler);
return handler;
}
private static Collection<UserBindingPattern> userBindingPattern(String path, Set<Integer> portBindingOverride) {
UserBindingPattern bindingPattern = UserBindingPattern.fromPattern(path);
if (portBindingOverride.isEmpty()) return Set.of(bindingPattern);
return portBindingOverride.stream()
.map(bindingPattern::withOverriddenPort)
.toList();
}
Handler createHandler(Element handlerElement) {
BundleInstantiationSpecification bundleSpec = BundleInstantiationSpecificationBuilder.build(handlerElement);
return new Handler(new ComponentModel(bundleSpec));
}
private void addServerBinding(Handler handler, BindingPattern binding, DeployLogger log) {
throwIfBindingIsReserved(binding, handler);
handler.addServerBindings(binding);
removeExistingServerBinding(binding, handler, log);
}
private void throwIfBindingIsReserved(BindingPattern binding, Handler newHandler) {
for (var reserved : reservedBindings) {
if (binding.hasSamePattern(reserved)) {
throw new IllegalArgumentException("Binding '" + binding.patternString() + "' is a reserved Vespa binding and " +
"cannot be used by handler: " + newHandler.getComponentId());
}
}
}
private void removeExistingServerBinding(BindingPattern binding, Handler newHandler, DeployLogger log) {
for (var handler : cluster.getHandlers()) {
for (BindingPattern serverBinding : handler.getServerBindings()) {
if (serverBinding.hasSamePattern(binding)) {
handler.removeServerBinding(serverBinding);
log.logApplicationPackage(INFO, "Binding '" + binding.patternString() + "' was already in use by handler '" +
handler.getComponentId() + "', but will now be taken over by handler: " + newHandler.getComponentId());
}
}
}
}
}
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