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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.config.server.http.v2;
import com.google.inject.Inject;
import com.yahoo.cloud.config.ConfigserverConfig;
import com.yahoo.config.application.api.DeployLogger;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.TenantName;
import com.yahoo.container.jdisc.HttpRequest;
import com.yahoo.container.jdisc.HttpResponse;
import com.yahoo.container.logging.AccessLog;
import com.yahoo.log.LogLevel;
import com.yahoo.slime.Slime;
import com.yahoo.vespa.config.server.ApplicationRepository;
import com.yahoo.vespa.config.server.configchange.RestartActions;
import com.yahoo.vespa.config.server.session.PrepareParams;
import com.yahoo.vespa.config.server.tenant.Tenant;
import com.yahoo.vespa.config.server.tenant.Tenants;
import com.yahoo.vespa.config.server.configchange.ConfigChangeActions;
import com.yahoo.vespa.config.server.configchange.RefeedActions;
import com.yahoo.vespa.config.server.http.SessionHandler;
import com.yahoo.vespa.config.server.http.Utils;
import java.time.Duration;
import java.util.concurrent.Executor;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* A handler that prepares a session given by an id in the request. v2 of application API
*
* @author hmusum
* @since 5.1.29
*/
// TODO: Move business logic out of the HTTP layer and delegate to a ApplicationRepository
public class SessionPrepareHandler extends SessionHandler {
private static final Logger log = Logger.getLogger(SessionPrepareHandler.class.getName());
private final Tenants tenants;
private final Duration zookeeperBarrierTimeout;
@Inject
public SessionPrepareHandler(Executor executor,
AccessLog accessLog,
Tenants tenants,
ConfigserverConfig configserverConfig,
ApplicationRepository applicationRepository) {
super(executor, accessLog, applicationRepository);
this.tenants = tenants;
this.zookeeperBarrierTimeout = Duration.ofSeconds(configserverConfig.zookeeper().barrierTimeout());
}
@Override
protected HttpResponse handlePUT(HttpRequest request) {
Tenant tenant = getExistingTenant(request);
TenantName tenantName = tenant.getName();
long sessionId = getSessionIdV2(request);
applicationRepository.validateThatLocalSessionIsNotActive(tenant, sessionId);
PrepareParams prepareParams = PrepareParams.fromHttpRequest(request, tenantName, zookeeperBarrierTimeout);
// An app id currently using only the name
ApplicationId appId = prepareParams.getApplicationId();
Slime rawDeployLog = createDeployLog();
DeployLogger logger = createLogger(rawDeployLog, request.getBooleanProperty("verbose"), appId);
ConfigChangeActions actions = applicationRepository.prepare(tenant,
sessionId,
logger,
prepareParams);
logConfigChangeActions(actions, logger);
log.log(LogLevel.INFO, Tenants.logPre(appId) + "Session " + sessionId + " prepared successfully. ");
return new SessionPrepareResponse(rawDeployLog, tenantName, request, sessionId, actions);
}
private static void logConfigChangeActions(ConfigChangeActions actions, DeployLogger logger) {
RestartActions restartActions = actions.getRestartActions();
if ( ! restartActions.isEmpty()) {
logger.log(Level.WARNING, "Change(s) between active and new application that require restart:\n" +
restartActions.format());
}
RefeedActions refeedActions = actions.getRefeedActions();
if ( ! refeedActions.isEmpty()) {
boolean allAllowed = refeedActions.getEntries().stream().allMatch(RefeedActions.Entry::allowed);
logger.log(allAllowed ? Level.INFO : Level.WARNING,
"Change(s) between active and new application that may require re-feed:\n" +
refeedActions.format());
}
}
@Override
protected HttpResponse handleGET(HttpRequest request) {
Tenant tenant = getExistingTenant(request);
long sessionId = getSessionIdV2(request);
applicationRepository.validateThatRemoteSessionIsNotActive(tenant, sessionId);
applicationRepository.validateThatRemoteSessionIsPrepared(tenant, sessionId);
return new SessionPrepareResponse(createDeployLog(), tenant.getName(), request, sessionId);
}
private Tenant getExistingTenant(HttpRequest request) {
TenantName tenantName = Utils.getTenantNameFromSessionRequest(request);
Utils.checkThatTenantExists(tenants, tenantName);
return tenants.getTenant(tenantName);
}
}
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