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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.hosted.controller.restapi.deployment;
import com.yahoo.config.application.api.DeploymentSpec;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.container.jdisc.HttpRequest;
import com.yahoo.container.jdisc.HttpResponse;
import com.yahoo.container.jdisc.LoggingRequestHandler;
import com.yahoo.container.logging.AccessLog;
import com.yahoo.slime.Cursor;
import com.yahoo.slime.Slime;
import com.yahoo.vespa.hosted.controller.Application;
import com.yahoo.vespa.hosted.controller.Controller;
import com.yahoo.vespa.hosted.controller.versions.VespaVersion;
import com.yahoo.vespa.hosted.controller.restapi.ErrorResponse;
import com.yahoo.vespa.hosted.controller.restapi.SlimeJsonResponse;
import com.yahoo.vespa.hosted.controller.restapi.Uri;
import com.yahoo.vespa.hosted.controller.restapi.application.EmptyJsonResponse;
import com.yahoo.vespa.hosted.controller.restapi.Path;
import com.yahoo.yolean.Exceptions;
import java.time.Instant;
import java.util.Optional;
import java.util.concurrent.Executor;
import java.util.logging.Level;
/**
* This implements the deployment/v1 API which provides information about the status of Vespa platform and
* application deployments.
*
* @author bratseth
*/
public class DeploymentApiHandler extends LoggingRequestHandler {
private final Controller controller;
public DeploymentApiHandler(Executor executor, AccessLog accessLog, Controller controller) {
super(executor, accessLog);
this.controller = controller;
}
@Override
public HttpResponse handle(HttpRequest request) {
try {
switch (request.getMethod()) {
case GET: return handleGET(request);
case OPTIONS: return handleOPTIONS();
default: return ErrorResponse.methodNotAllowed("Method '" + request.getMethod() + "' is not supported");
}
}
catch (IllegalArgumentException e) {
return ErrorResponse.badRequest(Exceptions.toMessageString(e));
}
catch (RuntimeException e) {
log.log(Level.WARNING, "Unexpected error handling '" + request.getUri() + "'", e);
return ErrorResponse.internalServerError(Exceptions.toMessageString(e));
}
}
private HttpResponse handleGET(HttpRequest request) {
Path path = new Path(request.getUri().getPath());
if (path.matches("/deployment/v1/")) return root(request);
return ErrorResponse.notFoundError("Nothing at " + path);
}
private HttpResponse handleOPTIONS() {
// We implement this to avoid redirect loops on OPTIONS requests from browsers, but do not really bother
// spelling out the methods supported at each path, which we should
EmptyJsonResponse response = new EmptyJsonResponse();
response.headers().put("Allow", "GET,OPTIONS");
return response;
}
private HttpResponse root(HttpRequest request) {
Slime slime = new Slime();
Cursor root = slime.setObject();
Cursor platformArray = root.setArray("versions");
for (VespaVersion version : controller.versionStatus().versions()) {
Cursor versionObject = platformArray.addObject();
versionObject.setString("version", version.versionNumber().toString());
versionObject.setString("confidence", version.confidence().name());
versionObject.setString("commit", version.releaseCommit());
versionObject.setLong("date", version.releasedAt().toEpochMilli());
versionObject.setBool("controllerVersion", version.isSelfVersion());
versionObject.setBool("systemVersion", version.isCurrentSystemVersion());
Cursor configServerArray = versionObject.setArray("configServers");
for (String configServerHostnames : version.configServerHostnames()) {
Cursor configServerObject = configServerArray.addObject();
configServerObject.setString("hostname", configServerHostnames);
}
Cursor failingArray = versionObject.setArray("failingApplications");
for (ApplicationId id : version.statistics().failing()) {
Optional<Application> application = controller.applications().get(id);
if ( ! application.isPresent()) continue; // deleted just now
Instant failingSince = application.get().deploymentJobs().failingSince();
if (failingSince == null) continue; // started working just now
Cursor applicationObject = failingArray.addObject();
toSlime(application.get(), applicationObject, request);
applicationObject.setLong("failingSince", failingSince.toEpochMilli());
}
Cursor productionArray = versionObject.setArray("productionApplications");
for (ApplicationId id : version.statistics().production()) {
Optional<Application> application = controller.applications().get(id);
if ( ! application.isPresent()) continue; // deleted just now
toSlime(application.get(), productionArray.addObject(), request);
}
}
return new SlimeJsonResponse(slime);
}
private void toSlime(Application application, Cursor object, HttpRequest request) {
object.setString("tenant", application.id().tenant().value());
object.setString("application", application.id().application().value());
object.setString("instance", application.id().instance().value());
object.setString("url", new Uri(request.getUri()).withPath("/application/v4/tenant/" +
application.id().tenant().value() +
"/application/" +
application.id().application().value()).toString());
object.setString("upgradePolicy", toString(application.deploymentSpec().upgradePolicy()));
}
private static String toString(DeploymentSpec.UpgradePolicy upgradePolicy) {
if (upgradePolicy == DeploymentSpec.UpgradePolicy.defaultPolicy) {
return "default";
}
return upgradePolicy.name();
}
}
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