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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.hosted.controller.routing.context;
import com.yahoo.config.application.api.DeploymentSpec;
import com.yahoo.config.provision.ClusterSpec;
import com.yahoo.config.provision.zone.RoutingMethod;
import com.yahoo.vespa.hosted.controller.LockedApplication;
import com.yahoo.vespa.hosted.controller.RoutingController;
import com.yahoo.vespa.hosted.controller.api.application.v4.model.EndpointStatus;
import com.yahoo.vespa.hosted.controller.api.identifiers.DeploymentId;
import com.yahoo.vespa.hosted.controller.api.integration.configserver.ConfigServer;
import com.yahoo.vespa.hosted.controller.api.integration.configserver.ContainerEndpoint;
import com.yahoo.vespa.hosted.controller.application.Endpoint;
import com.yahoo.vespa.hosted.controller.routing.RoutingPolicy;
import com.yahoo.vespa.hosted.controller.routing.RoutingPolicyId;
import com.yahoo.vespa.hosted.controller.routing.RoutingStatus;
import java.time.Clock;
import java.util.List;
import java.util.Objects;
import java.util.Optional;
import java.util.Set;
import java.util.stream.Collectors;
/**
* A deployment routing context, which extends {@link RoutingContext} to support routing configuration of a deployment.
*
* @author mpolden
*/
public abstract class DeploymentRoutingContext implements RoutingContext {
final DeploymentId deployment;
final RoutingController controller;
final RoutingMethod method;
public DeploymentRoutingContext(DeploymentId deployment, RoutingMethod method, RoutingController controller) {
this.deployment = Objects.requireNonNull(deployment);
this.controller = Objects.requireNonNull(controller);
this.method = Objects.requireNonNull(method);
}
/**
* Prepare routing configuration for the deployment in this context
*
* @return the container endpoints relevant for this deployment, as declared in deployment spec
*/
public final Set<ContainerEndpoint> prepare(LockedApplication application) {
return controller.containerEndpointsOf(application, deployment.applicationId().instance(), deployment.zoneId());
}
/** Configure routing for the deployment in this context, using given deployment spec */
public final void configure(DeploymentSpec deploymentSpec) {
controller.policies().refresh(deployment, deploymentSpec);
}
/** Routing method of this context */
public final RoutingMethod routingMethod() {
return method;
}
/** Read the routing policy for given cluster in this deployment */
public final Optional<RoutingPolicy> routingPolicy(ClusterSpec.Id cluster) {
RoutingPolicyId id = new RoutingPolicyId(deployment.applicationId(), cluster, deployment.zoneId());
return controller.policies().read(deployment).of(id);
}
/** Extension of a {@link DeploymentRoutingContext} for deployments using {@link RoutingMethod#sharedLayer4} routing */
public static class SharedDeploymentRoutingContext extends DeploymentRoutingContext {
private final Clock clock;
private final ConfigServer configServer;
public SharedDeploymentRoutingContext(DeploymentId deployment, RoutingController controller, ConfigServer configServer, Clock clock) {
super(deployment, RoutingMethod.sharedLayer4, controller);
this.clock = Objects.requireNonNull(clock);
this.configServer = Objects.requireNonNull(configServer);
}
@Override
public void setRoutingStatus(RoutingStatus.Value value, RoutingStatus.Agent agent) {
EndpointStatus newStatus = new EndpointStatus(value == RoutingStatus.Value.in
? EndpointStatus.Status.in
: EndpointStatus.Status.out,
agent.name(),
clock.instant());
try {
configServer.setGlobalRotationStatus(deployment, upstreamNames(), newStatus);
} catch (Exception e) {
throw new RuntimeException("Failed to change rotation status of " + deployment, e);
}
}
@Override
public RoutingStatus routingStatus() {
// In a given deployment, all upstreams (clusters) share the same status, so we can query using any
// upstream name
String upstreamName = upstreamNames().get(0);
EndpointStatus status = configServer.getGlobalRotationStatus(deployment, upstreamName);
RoutingStatus.Agent agent;
try {
agent = RoutingStatus.Agent.valueOf(status.agent().toLowerCase());
} catch (IllegalArgumentException e) {
agent = RoutingStatus.Agent.unknown;
}
return new RoutingStatus(status.status() == EndpointStatus.Status.in
? RoutingStatus.Value.in
: RoutingStatus.Value.out,
agent,
status.changedAt());
}
private List<String> upstreamNames() {
List<String> upstreamNames = controller.readEndpointsOf(deployment)
.scope(Endpoint.Scope.zone)
.shared()
.asList().stream()
.map(endpoint -> endpoint.upstreamName(deployment))
.distinct()
.collect(Collectors.toList());
if (upstreamNames.isEmpty()) {
throw new IllegalArgumentException("No upstream names found for " + deployment);
}
return upstreamNames;
}
}
/**
* Implementation of a {@link DeploymentRoutingContext} for deployments using {@link RoutingMethod#exclusive}
* routing.
*/
public static class ExclusiveDeploymentRoutingContext extends DeploymentRoutingContext {
public ExclusiveDeploymentRoutingContext(DeploymentId deployment, RoutingController controller) {
super(deployment, RoutingMethod.exclusive, controller);
}
@Override
public void setRoutingStatus(RoutingStatus.Value value, RoutingStatus.Agent agent) {
controller.policies().setRoutingStatus(deployment, value, agent);
}
@Override
public RoutingStatus routingStatus() {
// Status for a deployment applies to all clusters within the deployment, so we use the status from the
// first matching policy here
return controller.policies().read(deployment)
.first()
.map(RoutingPolicy::status)
.map(RoutingPolicy.Status::routingStatus)
.orElse(RoutingStatus.DEFAULT);
}
}
}
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