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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.orchestrator.resources;
import com.google.common.util.concurrent.UncheckedTimeoutException;
import com.yahoo.container.jaxrs.annotation.Component;
import java.util.logging.Level;
import com.yahoo.vespa.applicationmodel.HostName;
import com.yahoo.vespa.orchestrator.Host;
import com.yahoo.vespa.orchestrator.HostNameNotFoundException;
import com.yahoo.vespa.orchestrator.OrchestrationException;
import com.yahoo.vespa.orchestrator.Orchestrator;
import com.yahoo.vespa.orchestrator.policy.HostStateChangeDeniedException;
import com.yahoo.vespa.orchestrator.policy.HostedVespaPolicy;
import com.yahoo.vespa.orchestrator.restapi.HostApi;
import com.yahoo.vespa.orchestrator.restapi.wire.GetHostResponse;
import com.yahoo.vespa.orchestrator.restapi.wire.HostService;
import com.yahoo.vespa.orchestrator.restapi.wire.HostStateChangeDenialReason;
import com.yahoo.vespa.orchestrator.restapi.wire.PatchHostRequest;
import com.yahoo.vespa.orchestrator.restapi.wire.PatchHostResponse;
import com.yahoo.vespa.orchestrator.restapi.wire.UpdateHostResponse;
import com.yahoo.vespa.orchestrator.status.HostStatus;
import javax.inject.Inject;
import javax.ws.rs.BadRequestException;
import javax.ws.rs.InternalServerErrorException;
import javax.ws.rs.NotFoundException;
import javax.ws.rs.Path;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriInfo;
import java.net.URI;
import java.time.Instant;
import java.util.List;
import java.util.logging.Logger;
import java.util.stream.Collectors;
/**
* @author oyving
*/
@Path(HostApi.PATH_PREFIX)
public class HostResource implements HostApi {
private static final Logger log = Logger.getLogger(HostResource.class.getName());
private final Orchestrator orchestrator;
private final UriInfo uriInfo;
@Inject
public HostResource(@Component Orchestrator orchestrator, @Context UriInfo uriInfo) {
this.orchestrator = orchestrator;
this.uriInfo = uriInfo;
}
@Override
public GetHostResponse getHost(String hostNameString) {
HostName hostName = new HostName(hostNameString);
try {
Host host = orchestrator.getHost(hostName);
URI applicationUri = uriInfo.getBaseUriBuilder()
.path(InstanceResource.class)
.path(host.getApplicationInstanceReference().asString())
.build();
List<HostService> hostServices = host.getServiceInstances().stream()
.map(serviceInstance -> new HostService(
serviceInstance.getServiceCluster().clusterId().s(),
serviceInstance.getServiceCluster().serviceType().s(),
serviceInstance.configId().s(),
serviceInstance.serviceStatus().name()))
.collect(Collectors.toList());
return new GetHostResponse(
host.getHostName().s(),
host.getHostInfo().status().name(),
host.getHostInfo().suspendedSince().map(Instant::toString).orElse(null),
applicationUri.toString(),
hostServices);
} catch (UncheckedTimeoutException e) {
log.log(LogLevel.DEBUG, "Failed to get host " + hostName + ": " + e.getMessage());
throw webExceptionFromTimeout("getHost", hostName, e);
} catch (HostNameNotFoundException e) {
log.log(LogLevel.DEBUG, "Host not found: " + hostName);
throw new NotFoundException(e);
}
}
@Override
public PatchHostResponse patch(String hostNameString, PatchHostRequest request) {
HostName hostName = new HostName(hostNameString);
if (request.state != null) {
HostStatus state;
try {
state = HostStatus.valueOf(request.state);
} catch (IllegalArgumentException dummy) {
throw new BadRequestException("Bad state in request: '" + request.state + "'");
}
try {
orchestrator.setNodeStatus(hostName, state);
} catch (HostNameNotFoundException e) {
log.log(LogLevel.DEBUG, "Host not found: " + hostName);
throw new NotFoundException(e);
} catch (UncheckedTimeoutException e) {
log.log(LogLevel.DEBUG, "Failed to patch " + hostName + ": " + e.getMessage());
throw webExceptionFromTimeout("patch", hostName, e);
} catch (OrchestrationException e) {
String message = "Failed to set " + hostName + " to " + state + ": " + e.getMessage();
log.log(LogLevel.DEBUG, message, e);
throw new InternalServerErrorException(message);
}
}
PatchHostResponse response = new PatchHostResponse();
response.description = "ok";
return response;
}
@Override
public UpdateHostResponse suspend(String hostNameString) {
HostName hostName = new HostName(hostNameString);
try {
orchestrator.suspend(hostName);
} catch (HostNameNotFoundException e) {
log.log(LogLevel.DEBUG, "Host not found: " + hostName);
throw new NotFoundException(e);
} catch (UncheckedTimeoutException e) {
log.log(LogLevel.DEBUG, "Failed to suspend " + hostName + ": " + e.getMessage());
throw webExceptionFromTimeout("suspend", hostName, e);
} catch (HostStateChangeDeniedException e) {
log.log(LogLevel.DEBUG, "Failed to suspend " + hostName + ": " + e.getMessage());
throw webExceptionWithDenialReason("suspend", hostName, e);
}
return new UpdateHostResponse(hostName.s(), null);
}
@Override
public UpdateHostResponse resume(final String hostNameString) {
HostName hostName = new HostName(hostNameString);
try {
orchestrator.resume(hostName);
} catch (HostNameNotFoundException e) {
log.log(LogLevel.DEBUG, "Host not found: " + hostName);
throw new NotFoundException(e);
} catch (UncheckedTimeoutException e) {
log.log(LogLevel.DEBUG, "Failed to resume " + hostName + ": " + e.getMessage());
throw webExceptionFromTimeout("resume", hostName, e);
} catch (HostStateChangeDeniedException e) {
log.log(LogLevel.DEBUG, "Failed to resume " + hostName + ": " + e.getMessage());
throw webExceptionWithDenialReason("resume", hostName, e);
}
return new UpdateHostResponse(hostName.s(), null);
}
private static WebApplicationException webExceptionFromTimeout(String operationDescription,
HostName hostName,
UncheckedTimeoutException e) {
// Return timeouts as 409 Conflict instead of 504 Gateway Timeout to reduce noise in 5xx graphs.
return createWebException(operationDescription, hostName, e,
HostedVespaPolicy.DEADLINE_CONSTRAINT, e.getMessage(), Response.Status.CONFLICT);
}
private static WebApplicationException webExceptionWithDenialReason(
String operationDescription,
HostName hostName,
HostStateChangeDeniedException e) {
return createWebException(operationDescription, hostName, e, e.getConstraintName(), e.getMessage(),
Response.Status.CONFLICT);
}
private static WebApplicationException createWebException(String operationDescription,
HostName hostname,
Exception e,
String constraint,
String message,
Response.Status status) {
HostStateChangeDenialReason hostStateChangeDenialReason = new HostStateChangeDenialReason(
constraint, operationDescription + " failed: " + message);
UpdateHostResponse response = new UpdateHostResponse(hostname.s(), hostStateChangeDenialReason);
return new WebApplicationException(
hostStateChangeDenialReason.toString(),
e,
Response.status(status)
.entity(response)
.type(MediaType.APPLICATION_JSON_TYPE)
.build());
}
}
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