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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.container.http;
import com.yahoo.component.ComponentSpecification;
import com.yahoo.component.provider.ComponentRegistry;
import com.yahoo.config.model.producer.AbstractConfigProducer;
import com.yahoo.jdisc.http.ServerConfig;
import com.yahoo.vespa.model.container.component.chain.Chain;
import com.yahoo.vespa.model.container.component.chain.ChainedComponent;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Optional;
/**
* Represents the http servers and filters of a Jdisc cluster.
*
* @author Tony Vaagenes
*/
public class Http extends AbstractConfigProducer<AbstractConfigProducer<?>> implements ServerConfig.Producer {
public static class Binding {
public final ComponentSpecification filterId;
public final String binding;
public Binding(ComponentSpecification filterId, String binding) {
this.filterId = filterId;
this.binding = binding;
}
}
private FilterChains filterChains;
private JettyHttpServer httpServer;
public final List<Binding> bindings;
private final Optional<AccessControl> accessControl;
public Http(List<Binding> bindings) {
this(bindings, null);
}
public Http(List<Binding> bindings, AccessControl accessControl) {
super( "http");
this.bindings = Collections.unmodifiableList(bindings);
this.accessControl = Optional.ofNullable(accessControl);
}
public void setFilterChains(FilterChains filterChains) {
this.filterChains = filterChains;
}
public FilterChains getFilterChains() {
return filterChains;
}
public JettyHttpServer getHttpServer() {
return httpServer;
}
public void setHttpServer(JettyHttpServer newServer) {
JettyHttpServer oldServer = this.httpServer;
this.httpServer = newServer;
if (oldServer == null && newServer != null) {
addChild(newServer);
} else if (newServer == null && oldServer != null) {
removeChild(oldServer);
} else if (newServer == null && oldServer == null) {
//do nothing
} else {
//none of them are null
removeChild(oldServer);
addChild(newServer);
}
}
public void removeAllServers() {
setHttpServer(null);
}
public List<Binding> getBindings() {
return bindings;
}
public Optional<AccessControl> getAccessControl() {
return accessControl;
}
@Override
public void getConfig(ServerConfig.Builder builder) {
for (final Binding binding : bindings) {
builder.filter(
new ServerConfig.Filter.Builder()
.id(binding.filterId.stringValue())
.binding(binding.binding));
}
}
@Override
public void validate() throws Exception {
validate(bindings);
}
void validate(Collection<Binding> bindings) {
if (!bindings.isEmpty()) {
if (filterChains == null)
throw new IllegalArgumentException("Null FilterChains is not allowed when there are filter bindings!");
ComponentRegistry<ChainedComponent<?>> filters = filterChains.componentsRegistry();
ComponentRegistry<Chain<Filter>> chains = filterChains.allChains();
for (Binding binding: bindings) {
if (filters.getComponent(binding.filterId) == null && chains.getComponent(binding.filterId) == null)
throw new RuntimeException("Can't find filter " + binding.filterId + " for binding " + binding.binding);
}
}
}
}
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