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// Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.controller.application;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.NodeType;
import com.yahoo.config.provision.zone.ZoneId;
import com.yahoo.vespa.hosted.controller.Controller;
import com.yahoo.vespa.hosted.controller.api.identifiers.DeploymentId;
import com.yahoo.vespa.hosted.controller.api.integration.configserver.ServiceConvergence;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;
/**
* This represents a system-level application in hosted Vespa. All infrastructure nodes in a hosted Vespa zones are
* allocated to a system application.
*
* @author mpolden
*/
public enum SystemApplication {
configServerHost(ApplicationId.from("hosted-vespa", "configserver-host", "default"), NodeType.confighost),
proxyHost(ApplicationId.from("hosted-vespa", "proxy-host", "default"), NodeType.proxyhost),
configServer(ApplicationId.from("hosted-vespa", "zone-config-servers", "default"), NodeType.config, configServerHost),
zone(ApplicationId.from("hosted-vespa", "routing", "default"), Set.of(NodeType.proxy, NodeType.host),
configServerHost, proxyHost, configServer);
private final ApplicationId id;
private final Set<NodeType> nodeTypes;
private final List<SystemApplication> dependencies;
SystemApplication(ApplicationId id, NodeType nodeType, SystemApplication... dependencies) {
this(id, Set.of(nodeType), dependencies);
}
SystemApplication(ApplicationId id, Set<NodeType> nodeTypes, SystemApplication... dependencies) {
if (nodeTypes.isEmpty()) {
throw new IllegalArgumentException("Node types must be non-empty");
}
this.id = id;
this.nodeTypes = Set.copyOf(nodeTypes);
this.dependencies = List.of(dependencies);
}
public ApplicationId id() {
return id;
}
/** The node type(s) that are implicitly allocated to this */
public Set<NodeType> nodeTypes() {
return nodeTypes;
}
/** Returns the system applications that should upgrade before this */
public List<SystemApplication> dependencies() { return dependencies; }
/** Returns whether this system application has an application package */
public boolean hasApplicationPackage() {
return this == zone;
}
/** Returns whether config for this application has converged in given zone */
public boolean configConvergedIn(ZoneId zone, Controller controller) {
if (!hasApplicationPackage()) {
return true;
}
return controller.configServer().serviceConvergence(new DeploymentId(id(), zone))
.map(ServiceConvergence::converged)
.orElse(false);
}
/** Returns the node types of this that should receive OS upgrades */
public Set<NodeType> nodeTypesWithUpgradableOs() {
return nodeTypes().stream().filter(NodeType::isDockerHost).collect(Collectors.toSet());
}
/** All known system applications */
public static List<SystemApplication> all() {
return List.of(values());
}
@Override
public String toString() {
return String.format("system application %s of type %s", id, nodeTypes);
}
}
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