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// Copyright Verizon Media. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.config.server.modelfactory;
import com.yahoo.cloud.config.ConfigserverConfig;
import com.yahoo.component.Version;
import com.yahoo.config.application.api.ApplicationPackage;
import com.yahoo.config.application.api.DeployLogger;
import com.yahoo.config.model.api.ConfigChangeAction;
import com.yahoo.config.model.api.ConfigDefinitionRepo;
import com.yahoo.config.model.api.HostInfo;
import com.yahoo.config.model.api.HostProvisioner;
import com.yahoo.config.model.api.Model;
import com.yahoo.config.model.api.ModelContext;
import com.yahoo.config.model.api.ModelCreateResult;
import com.yahoo.config.model.api.ModelFactory;
import com.yahoo.config.model.api.Provisioned;
import com.yahoo.config.model.api.ValidationParameters;
import com.yahoo.config.model.api.ValidationParameters.IgnoreValidationErrors;
import com.yahoo.config.model.application.provider.FilesApplicationPackage;
import com.yahoo.config.model.deploy.DeployState;
import com.yahoo.config.provision.AllocatedHosts;
import com.yahoo.config.provision.ApplicationId;
import com.yahoo.config.provision.DockerImage;
import com.yahoo.vespa.config.server.application.Application;
import com.yahoo.vespa.config.server.application.ApplicationCuratorDatabase;
import com.yahoo.vespa.config.server.application.ApplicationSet;
import com.yahoo.vespa.config.server.application.PermanentApplicationPackage;
import com.yahoo.vespa.config.server.deploy.ModelContextImpl;
import com.yahoo.vespa.config.server.filedistribution.FileDistributionProvider;
import com.yahoo.vespa.config.server.host.HostValidator;
import com.yahoo.vespa.config.server.provision.HostProvisionerProvider;
import com.yahoo.vespa.config.server.session.PrepareParams;
import com.yahoo.vespa.curator.Curator;
import java.io.File;
import java.io.IOException;
import java.time.Duration;
import java.time.Instant;
import java.util.List;
import java.util.Optional;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.stream.Collectors;
/**
* @author bratseth
*/
public class PreparedModelsBuilder extends ModelsBuilder<PreparedModelsBuilder.PreparedModelResult> {
private static final Logger log = Logger.getLogger(PreparedModelsBuilder.class.getName());
private final PermanentApplicationPackage permanentApplicationPackage;
private final ConfigDefinitionRepo configDefinitionRepo;
private final HostValidator<ApplicationId> hostValidator;
private final PrepareParams params;
private final FileDistributionProvider fileDistributionProvider;
private final Optional<ApplicationSet> currentActiveApplicationSet;
private final ModelContext.Properties properties;
private final Curator curator;
public PreparedModelsBuilder(ModelFactoryRegistry modelFactoryRegistry,
PermanentApplicationPackage permanentApplicationPackage,
ConfigDefinitionRepo configDefinitionRepo,
FileDistributionProvider fileDistributionProvider,
HostProvisionerProvider hostProvisionerProvider,
Curator curator,
HostValidator<ApplicationId> hostValidator,
DeployLogger deployLogger,
PrepareParams params,
Optional<ApplicationSet> currentActiveApplicationSet,
ModelContext.Properties properties,
ConfigserverConfig configserverConfig) {
super(modelFactoryRegistry, configserverConfig, properties.zone(), hostProvisionerProvider, deployLogger);
this.permanentApplicationPackage = permanentApplicationPackage;
this.configDefinitionRepo = configDefinitionRepo;
this.fileDistributionProvider = fileDistributionProvider;
this.hostValidator = hostValidator;
this.curator = curator;
this.params = params;
this.currentActiveApplicationSet = currentActiveApplicationSet;
this.properties = properties;
}
@Override
protected PreparedModelResult buildModelVersion(ModelFactory modelFactory,
ApplicationPackage applicationPackage,
ApplicationId applicationId,
Optional<DockerImage> wantedDockerImageRepository,
Version wantedNodeVespaVersion,
Optional<AllocatedHosts> allocatedHosts) {
Version modelVersion = modelFactory.version();
log.log(Level.FINE, () -> "Building model " + modelVersion + " for " + applicationId);
// Use empty on non-hosted systems, use already allocated hosts if available, create connection to a host provisioner otherwise
Provisioned provisioned = new Provisioned();
ModelContext modelContext = new ModelContextImpl(
applicationPackage,
modelOf(modelVersion),
permanentApplicationPackage.applicationPackage(),
deployLogger(),
configDefinitionRepo,
fileDistributionProvider.getFileRegistry(),
new ApplicationCuratorDatabase(applicationId.tenant(), curator).readReindexingStatus(applicationId),
createHostProvisioner(applicationPackage, provisioned),
provisioned,
properties,
getAppDir(applicationPackage),
wantedDockerImageRepository,
modelVersion,
wantedNodeVespaVersion);
ModelCreateResult result = createAndValidateModel(modelFactory, applicationId, modelVersion, modelContext);
return new PreparedModelResult(modelVersion, result.getModel(), fileDistributionProvider, result.getConfigChangeActions());
}
private ModelCreateResult createAndValidateModel(ModelFactory modelFactory, ApplicationId applicationId, Version modelVersion, ModelContext modelContext) {
log.log(properties.zone().system().isCd() ? Level.INFO : Level.FINE,
() -> "Create and validate model " + modelVersion + " for " + applicationId + ", previous model is " +
modelOf(modelVersion).map(Model::version).map(Version::toFullString).orElse("non-existing"));
ValidationParameters validationParameters =
new ValidationParameters(params.ignoreValidationErrors() ? IgnoreValidationErrors.TRUE : IgnoreValidationErrors.FALSE);
ModelCreateResult result = modelFactory.createAndValidateModel(modelContext, validationParameters);
validateModelHosts(hostValidator, applicationId, result.getModel());
log.log(Level.FINE, () -> "Done building model " + modelVersion + " for " + applicationId);
params.getTimeoutBudget().assertNotTimedOut(() -> "prepare timed out after building model " + modelVersion +
" (timeout " + params.getTimeoutBudget().timeout() + "): " + applicationId);
return result;
}
private Optional<Model> modelOf(Version version) {
if (currentActiveApplicationSet.isEmpty()) return Optional.empty();
return currentActiveApplicationSet.get().get(version).map(Application::getModel);
}
private HostProvisioner createHostProvisioner(ApplicationPackage applicationPackage, Provisioned provisioned) {
HostProvisioner defaultHostProvisioner = DeployState.getDefaultModelHostProvisioner(applicationPackage);
// Note: nodeRepositoryProvisioner will always be present when hosted is true
Optional<HostProvisioner> nodeRepositoryProvisioner = createNodeRepositoryProvisioner(properties.applicationId(), provisioned);
Optional<AllocatedHosts> allocatedHosts = applicationPackage.getAllocatedHosts();
if (allocatedHosts.isEmpty()) return nodeRepositoryProvisioner.orElse(defaultHostProvisioner);
// Nodes are already allocated by a model and we should use them unless this model requests hosts from a
// previously unallocated cluster. This allows future models to stop allocate certain clusters.
if (hosted) return createStaticProvisionerForHosted(allocatedHosts.get(), nodeRepositoryProvisioner.get());
return defaultHostProvisioner;
}
private Optional<File> getAppDir(ApplicationPackage applicationPackage) {
try {
return applicationPackage instanceof FilesApplicationPackage ?
Optional.of(((FilesApplicationPackage) applicationPackage).getAppDir()) :
Optional.empty();
} catch (IOException e) {
throw new RuntimeException("Could not find app dir", e);
}
}
private void validateModelHosts(HostValidator<ApplicationId> hostValidator, ApplicationId applicationId, Model model) {
// Will retry here, since hosts used might not be in sync on all config servers (we wait for 2/3 servers
// to respond to deployments and deletions).
Instant end = Instant.now().plus(Duration.ofSeconds(1));
IllegalArgumentException exception;
do {
try {
hostValidator.verifyHosts(applicationId, model.getHosts().stream()
.map(HostInfo::getHostname)
.collect(Collectors.toList()));
return;
} catch (IllegalArgumentException e) {
exception = e;
log.log(Level.INFO, "Verifying hosts failed, will retry: " + e.getMessage());
try {
Thread.sleep(100);
} catch (InterruptedException interruptedException) {/* ignore */}
}
} while (Instant.now().isBefore(end));
throw exception;
}
/** The result of preparing a single model version */
public static class PreparedModelResult implements ModelResult {
public final Version version;
public final Model model;
public final FileDistributionProvider fileDistributionProvider;
public final List<ConfigChangeAction> actions;
public PreparedModelResult(Version version,
Model model,
FileDistributionProvider fileDistributionProvider,
List<ConfigChangeAction> actions) {
this.version = version;
this.model = model;
this.fileDistributionProvider = fileDistributionProvider;
this.actions = actions;
}
@Override
public Model getModel() {
return model;
}
}
}
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