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org.apache.pulsar.functions.runtime.JavaInstanceStarter Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.pulsar.functions.runtime;
import static org.apache.pulsar.functions.utils.FunctionCommon.getSinkType;
import static org.apache.pulsar.functions.utils.FunctionCommon.getSourceType;
import com.beust.jcommander.JCommander;
import com.beust.jcommander.Parameter;
import com.beust.jcommander.converters.StringConverter;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;
import com.google.protobuf.Empty;
import com.google.protobuf.util.JsonFormat;
import io.grpc.Server;
import io.grpc.ServerBuilder;
import io.grpc.stub.StreamObserver;
import io.prometheus.client.exporter.HTTPServer;
import java.lang.reflect.Type;
import java.net.InetSocketAddress;
import java.util.Map;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
import lombok.extern.slf4j.Slf4j;
import net.bytebuddy.description.type.TypeDefinition;
import net.bytebuddy.dynamic.ClassFileLocator;
import net.bytebuddy.pool.TypePool;
import org.apache.commons.lang3.StringUtils;
import org.apache.pulsar.common.functions.WindowConfig;
import org.apache.pulsar.common.nar.NarClassLoader;
import org.apache.pulsar.common.util.Reflections;
import org.apache.pulsar.functions.instance.AuthenticationConfig;
import org.apache.pulsar.functions.instance.InstanceCache;
import org.apache.pulsar.functions.instance.InstanceConfig;
import org.apache.pulsar.functions.instance.stats.FunctionCollectorRegistry;
import org.apache.pulsar.functions.proto.Function;
import org.apache.pulsar.functions.proto.InstanceCommunication;
import org.apache.pulsar.functions.proto.InstanceControlGrpc;
import org.apache.pulsar.functions.runtime.thread.ThreadRuntime;
import org.apache.pulsar.functions.runtime.thread.ThreadRuntimeFactory;
import org.apache.pulsar.functions.secretsprovider.ClearTextSecretsProvider;
import org.apache.pulsar.functions.secretsprovider.SecretsProvider;
import org.apache.pulsar.functions.utils.FunctionCommon;
import org.apache.pulsar.functions.utils.functioncache.FunctionCacheManager;
import org.apache.pulsar.functions.utils.functioncache.FunctionCacheManagerImpl;
@Slf4j
public class JavaInstanceStarter implements AutoCloseable {
@Parameter(names = "--function_details", description = "Function details json\n", required = true)
public String functionDetailsJsonString;
@Parameter(
names = "--jar",
description = "Path to Jar\n",
listConverter = StringConverter.class)
public String jarFile;
@Parameter(
names = "--transform_function_jar",
description = "Path to Transform Function Jar\n",
listConverter = StringConverter.class)
public String transformFunctionJarFile;
@Parameter(names = "--instance_id", description = "Instance Id\n", required = true)
public int instanceId;
@Parameter(names = "--function_id", description = "Function Id\n", required = true)
public String functionId;
@Parameter(names = "--function_version", description = "Function Version\n", required = true)
public String functionVersion;
@Parameter(names = "--pulsar_serviceurl", description = "Pulsar Service Url\n", required = true)
public String pulsarServiceUrl;
@Parameter(names = "--transform_function_id", description = "Transform Function Id\n")
public String transformFunctionId;
@Parameter(names = "--client_auth_plugin", description = "Client auth plugin name\n")
public String clientAuthenticationPlugin;
@Parameter(names = "--client_auth_params", description = "Client auth param\n")
public String clientAuthenticationParameters;
@Parameter(names = "--use_tls", description = "Use tls connection\n")
public String useTls = Boolean.FALSE.toString();
@Parameter(names = "--tls_allow_insecure", description = "Allow insecure tls connection\n")
public String tlsAllowInsecureConnection = Boolean.TRUE.toString();
@Parameter(names = "--hostname_verification_enabled", description = "Enable hostname verification")
public String tlsHostNameVerificationEnabled = Boolean.FALSE.toString();
@Parameter(names = "--tls_trust_cert_path", description = "tls trust cert file path")
public String tlsTrustCertFilePath;
@Parameter(names = "--state_storage_impl_class", description = "State Storage Service "
+ "Implementation class\n", required = false)
public String stateStorageImplClass;
@Parameter(names = "--state_storage_serviceurl", description = "State Storage Service Url\n", required = false)
public String stateStorageServiceUrl;
@Parameter(names = "--port", description = "Port to listen on\n", required = true)
public int port;
@Parameter(names = "--metrics_port", description = "Port metrics will be exposed on\n", required = true)
public int metricsPort;
@Parameter(names = "--max_buffered_tuples", description = "Maximum number of tuples to buffer\n", required = true)
public int maxBufferedTuples;
@Parameter(names = "--expected_healthcheck_interval", description = "Expected interval in "
+ "seconds between healtchecks", required = true)
public int expectedHealthCheckInterval;
@Parameter(names = "--secrets_provider", description = "The classname of the secrets provider", required = false)
public String secretsProviderClassName;
@Parameter(names = "--secrets_provider_config", description = "The config that needs to be "
+ "passed to secrets provider", required = false)
public String secretsProviderConfig;
@Parameter(names = "--cluster_name", description = "The name of the cluster this "
+ "instance is running on", required = true)
public String clusterName;
@Parameter(names = "--nar_extraction_directory", description = "The directory where "
+ "extraction of nar packages happen", required = false)
public String narExtractionDirectory = NarClassLoader.DEFAULT_NAR_EXTRACTION_DIR;
@Parameter(names = "--pending_async_requests", description = "Max pending async requests per instance",
required = false)
public int maxPendingAsyncRequests = 1000;
@Parameter(names = "--web_serviceurl", description = "Pulsar Web Service Url", required = false)
public String webServiceUrl = null;
@Parameter(names = "--expose_pulsaradmin", description = "Whether the pulsar admin client "
+ "exposed to function context, default is disabled.", required = false)
public Boolean exposePulsarAdminClientEnabled = false;
private Server server;
private RuntimeSpawner runtimeSpawner;
private ThreadRuntimeFactory containerFactory;
private Long lastHealthCheckTs = null;
private HTTPServer metricsServer;
private ScheduledFuture healthCheckTimer;
public JavaInstanceStarter() {
}
public void start(String[] args, ClassLoader functionInstanceClassLoader, ClassLoader rootClassLoader)
throws Exception {
Thread.currentThread().setContextClassLoader(functionInstanceClassLoader);
JCommander jcommander = new JCommander(this);
// parse args by JCommander
jcommander.parse(args);
InstanceConfig instanceConfig = new InstanceConfig();
instanceConfig.setFunctionId(functionId);
instanceConfig.setTransformFunctionId(transformFunctionId);
instanceConfig.setFunctionVersion(functionVersion);
instanceConfig.setInstanceId(instanceId);
instanceConfig.setMaxBufferedTuples(maxBufferedTuples);
instanceConfig.setClusterName(clusterName);
instanceConfig.setMaxPendingAsyncRequests(maxPendingAsyncRequests);
instanceConfig.setExposePulsarAdminClientEnabled(exposePulsarAdminClientEnabled);
Function.FunctionDetails.Builder functionDetailsBuilder = Function.FunctionDetails.newBuilder();
if (functionDetailsJsonString.charAt(0) == '\'') {
functionDetailsJsonString = functionDetailsJsonString.substring(1);
}
if (functionDetailsJsonString.charAt(functionDetailsJsonString.length() - 1) == '\'') {
functionDetailsJsonString = functionDetailsJsonString.substring(0, functionDetailsJsonString.length() - 1);
}
JsonFormat.parser().merge(functionDetailsJsonString, functionDetailsBuilder);
FunctionCacheManager fnCache = new FunctionCacheManagerImpl(rootClassLoader);
ClassLoader functionClassLoader = ThreadRuntime.loadJars(jarFile, instanceConfig, functionId,
functionDetailsBuilder.getName(), narExtractionDirectory, fnCache);
inferringMissingTypeClassName(functionDetailsBuilder, functionClassLoader);
Function.FunctionDetails functionDetails = functionDetailsBuilder.build();
instanceConfig.setFunctionDetails(functionDetails);
instanceConfig.setPort(port);
instanceConfig.setMetricsPort(metricsPort);
Map secretsProviderConfigMap = null;
if (!StringUtils.isEmpty(secretsProviderConfig)) {
if (secretsProviderConfig.charAt(0) == '\'') {
secretsProviderConfig = secretsProviderConfig.substring(1);
}
if (secretsProviderConfig.charAt(secretsProviderConfig.length() - 1) == '\'') {
secretsProviderConfig = secretsProviderConfig.substring(0, secretsProviderConfig.length() - 1);
}
Type type = new TypeToken>() {
}.getType();
secretsProviderConfigMap = new Gson().fromJson(secretsProviderConfig, type);
}
if (StringUtils.isEmpty(secretsProviderClassName)) {
secretsProviderClassName = ClearTextSecretsProvider.class.getName();
}
SecretsProvider secretsProvider;
try {
secretsProvider =
(SecretsProvider) Reflections.createInstance(secretsProviderClassName, functionInstanceClassLoader);
} catch (Exception e) {
throw new RuntimeException(e);
}
secretsProvider.init(secretsProviderConfigMap);
// Collector Registry for prometheus metrics
FunctionCollectorRegistry collectorRegistry = FunctionCollectorRegistry.getDefaultImplementation();
RuntimeUtils.registerDefaultCollectors(collectorRegistry);
containerFactory = new ThreadRuntimeFactory("LocalRunnerThreadGroup", pulsarServiceUrl,
stateStorageImplClass,
stateStorageServiceUrl,
AuthenticationConfig.builder().clientAuthenticationPlugin(clientAuthenticationPlugin)
.clientAuthenticationParameters(clientAuthenticationParameters).useTls(isTrue(useTls))
.tlsAllowInsecureConnection(isTrue(tlsAllowInsecureConnection))
.tlsHostnameVerificationEnable(isTrue(tlsHostNameVerificationEnabled))
.tlsTrustCertsFilePath(tlsTrustCertFilePath).build(),
secretsProvider, collectorRegistry, narExtractionDirectory, rootClassLoader,
exposePulsarAdminClientEnabled, webServiceUrl, fnCache);
runtimeSpawner = new RuntimeSpawner(
instanceConfig,
jarFile,
null, // we really dont use this in thread container
transformFunctionJarFile,
null, // we really dont use this in thread container
containerFactory,
expectedHealthCheckInterval * 1000);
server = ServerBuilder.forPort(port)
.addService(new InstanceControlImpl(runtimeSpawner))
.build()
.start();
log.info("JavaInstance Server started, listening on " + port);
java.lang.Runtime.getRuntime().addShutdownHook(new Thread(() -> {
// Use stderr here since the logger may have been reset by its JVM shutdown hook.
try {
close();
} catch (Exception ex) {
System.err.println(ex);
}
}));
log.info("Starting runtimeSpawner");
runtimeSpawner.start();
// starting metrics server
log.info("Starting metrics server on port {}", metricsPort);
metricsServer = new HTTPServer(new InetSocketAddress(metricsPort), collectorRegistry, true);
if (expectedHealthCheckInterval > 0) {
healthCheckTimer =
InstanceCache.getInstanceCache().getScheduledExecutorService().scheduleAtFixedRate(() -> {
try {
if (System.currentTimeMillis() - lastHealthCheckTs
> 3 * expectedHealthCheckInterval * 1000) {
log.info("Haven't received health check from spawner in a while. Stopping instance...");
close();
}
} catch (Exception e) {
log.error("Error occurred when checking for latest health check", e);
}
}, expectedHealthCheckInterval * 1000, expectedHealthCheckInterval * 1000, TimeUnit.MILLISECONDS);
}
runtimeSpawner.join();
log.info("RuntimeSpawner quit, shutting down JavaInstance");
close();
}
private static boolean isTrue(String param) {
return Boolean.TRUE.toString().equals(param);
}
@Override
public void close() {
try {
// Use stderr here since the logger may have been reset by its JVM shutdown hook.
if (server != null) {
server.shutdown();
}
if (runtimeSpawner != null) {
runtimeSpawner.close();
}
if (healthCheckTimer != null) {
healthCheckTimer.cancel(false);
}
if (containerFactory != null) {
containerFactory.close();
}
if (metricsServer != null) {
metricsServer.stop();
}
InstanceCache.shutdown();
} catch (Exception ex) {
System.err.println(ex);
}
}
private void inferringMissingTypeClassName(Function.FunctionDetails.Builder functionDetailsBuilder,
ClassLoader classLoader) {
TypePool typePool = TypePool.Default.of(ClassFileLocator.ForClassLoader.of(classLoader));
switch (functionDetailsBuilder.getComponentType()) {
case FUNCTION:
if ((functionDetailsBuilder.hasSource()
&& functionDetailsBuilder.getSource().getTypeClassName().isEmpty())
|| (functionDetailsBuilder.hasSink()
&& functionDetailsBuilder.getSink().getTypeClassName().isEmpty())) {
Map userConfigs = new Gson().fromJson(functionDetailsBuilder.getUserConfig(),
new TypeToken>() {
}.getType());
boolean isWindowConfigPresent =
userConfigs != null && userConfigs.containsKey(WindowConfig.WINDOW_CONFIG_KEY);
String className = functionDetailsBuilder.getClassName();
if (isWindowConfigPresent) {
WindowConfig windowConfig = new Gson().fromJson(
(new Gson().toJson(userConfigs.get(WindowConfig.WINDOW_CONFIG_KEY))),
WindowConfig.class);
className = windowConfig.getActualWindowFunctionClassName();
}
TypeDefinition[] typeArgs = FunctionCommon.getFunctionTypes(typePool.describe(className).resolve(),
isWindowConfigPresent);
if (functionDetailsBuilder.hasSource()
&& functionDetailsBuilder.getSource().getTypeClassName().isEmpty()
&& typeArgs[0] != null) {
Function.SourceSpec.Builder sourceBuilder = functionDetailsBuilder.getSource().toBuilder();
sourceBuilder.setTypeClassName(typeArgs[0].asErasure().getTypeName());
functionDetailsBuilder.setSource(sourceBuilder.build());
}
if (functionDetailsBuilder.hasSink()
&& functionDetailsBuilder.getSink().getTypeClassName().isEmpty()
&& typeArgs[1] != null) {
Function.SinkSpec.Builder sinkBuilder = functionDetailsBuilder.getSink().toBuilder();
sinkBuilder.setTypeClassName(typeArgs[1].asErasure().getTypeName());
functionDetailsBuilder.setSink(sinkBuilder.build());
}
}
break;
case SINK:
if ((functionDetailsBuilder.hasSink()
&& functionDetailsBuilder.getSink().getTypeClassName().isEmpty())) {
String typeArg =
getSinkType(functionDetailsBuilder.getSink().getClassName(), typePool).asErasure()
.getTypeName();
Function.SinkSpec.Builder sinkBuilder =
Function.SinkSpec.newBuilder(functionDetailsBuilder.getSink());
sinkBuilder.setTypeClassName(typeArg);
functionDetailsBuilder.setSink(sinkBuilder);
Function.SourceSpec sourceSpec = functionDetailsBuilder.getSource();
if (null == sourceSpec || StringUtils.isEmpty(sourceSpec.getTypeClassName())) {
Function.SourceSpec.Builder sourceBuilder = Function.SourceSpec.newBuilder(sourceSpec);
sourceBuilder.setTypeClassName(typeArg);
functionDetailsBuilder.setSource(sourceBuilder);
}
}
break;
case SOURCE:
if ((functionDetailsBuilder.hasSource()
&& functionDetailsBuilder.getSource().getTypeClassName().isEmpty())) {
String typeArg =
getSourceType(functionDetailsBuilder.getSource().getClassName(), typePool).asErasure()
.getTypeName();
Function.SourceSpec.Builder sourceBuilder =
Function.SourceSpec.newBuilder(functionDetailsBuilder.getSource());
sourceBuilder.setTypeClassName(typeArg);
functionDetailsBuilder.setSource(sourceBuilder);
Function.SinkSpec sinkSpec = functionDetailsBuilder.getSink();
if (null == sinkSpec || StringUtils.isEmpty(sinkSpec.getTypeClassName())) {
Function.SinkSpec.Builder sinkBuilder = Function.SinkSpec.newBuilder(sinkSpec);
sinkBuilder.setTypeClassName(typeArg);
functionDetailsBuilder.setSink(sinkBuilder);
}
}
break;
}
}
class InstanceControlImpl extends InstanceControlGrpc.InstanceControlImplBase {
private RuntimeSpawner runtimeSpawner;
public InstanceControlImpl(RuntimeSpawner runtimeSpawner) {
this.runtimeSpawner = runtimeSpawner;
lastHealthCheckTs = System.currentTimeMillis();
}
@Override
public void getFunctionStatus(Empty request,
StreamObserver responseObserver) {
try {
InstanceCommunication.FunctionStatus response =
runtimeSpawner.getFunctionStatus(runtimeSpawner.getInstanceConfig().getInstanceId()).get();
responseObserver.onNext(response);
responseObserver.onCompleted();
} catch (Exception e) {
log.error("Exception in JavaInstance doing getFunctionStatus", e);
throw new RuntimeException(e);
}
}
@Override
public void getAndResetMetrics(com.google.protobuf.Empty request,
io.grpc.stub.StreamObserver
responseObserver) {
Runtime runtime = runtimeSpawner.getRuntime();
if (runtime != null) {
try {
InstanceCommunication.MetricsData metrics = runtime.getAndResetMetrics().get();
responseObserver.onNext(metrics);
responseObserver.onCompleted();
} catch (InterruptedException | ExecutionException e) {
log.error("Exception in JavaInstance doing getAndResetMetrics", e);
throw new RuntimeException(e);
}
}
}
@Override
public void getMetrics(com.google.protobuf.Empty request,
io.grpc.stub.StreamObserver
responseObserver) {
Runtime runtime = runtimeSpawner.getRuntime();
if (runtime != null) {
try {
InstanceCommunication.MetricsData metrics = runtime.getMetrics(instanceId).get();
responseObserver.onNext(metrics);
responseObserver.onCompleted();
} catch (InterruptedException | ExecutionException e) {
log.error("Exception in JavaInstance doing getAndResetMetrics", e);
throw new RuntimeException(e);
}
}
}
public void resetMetrics(com.google.protobuf.Empty request,
io.grpc.stub.StreamObserver responseObserver) {
Runtime runtime = runtimeSpawner.getRuntime();
if (runtime != null) {
try {
runtime.resetMetrics().get();
responseObserver.onNext(com.google.protobuf.Empty.getDefaultInstance());
responseObserver.onCompleted();
} catch (InterruptedException | ExecutionException e) {
log.error("Exception in JavaInstance doing resetMetrics", e);
throw new RuntimeException(e);
}
}
}
@Override
public void healthCheck(com.google.protobuf.Empty request,
io.grpc.stub.StreamObserver
responseObserver) {
log.debug("Received health check request...");
InstanceCommunication.HealthCheckResult healthCheckResult =
InstanceCommunication.HealthCheckResult.newBuilder().setSuccess(true).build();
responseObserver.onNext(healthCheckResult);
responseObserver.onCompleted();
lastHealthCheckTs = System.currentTimeMillis();
}
}
}
