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org.apache.pulsar.client.cli.CmdConsume 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.client.cli;
import static org.apache.commons.lang3.StringUtils.isNotBlank;
import static org.apache.pulsar.client.internal.PulsarClientImplementationBinding.getBytes;
import com.beust.jcommander.Parameter;
import com.beust.jcommander.ParameterException;
import com.beust.jcommander.Parameters;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.ImmutableMap;
import com.google.common.util.concurrent.RateLimiter;
import com.google.gson.Gson;
import com.google.gson.JsonObject;
import com.google.gson.JsonPrimitive;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.net.URI;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Base64;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.regex.Pattern;
import org.apache.commons.io.HexDump;
import org.apache.commons.lang3.StringUtils;
import org.apache.pulsar.client.api.Authentication;
import org.apache.pulsar.client.api.AuthenticationDataProvider;
import org.apache.pulsar.client.api.ClientBuilder;
import org.apache.pulsar.client.api.Consumer;
import org.apache.pulsar.client.api.ConsumerBuilder;
import org.apache.pulsar.client.api.Message;
import org.apache.pulsar.client.api.PulsarClient;
import org.apache.pulsar.client.api.PulsarClientException;
import org.apache.pulsar.client.api.Schema;
import org.apache.pulsar.client.api.SubscriptionInitialPosition;
import org.apache.pulsar.client.api.SubscriptionMode;
import org.apache.pulsar.client.api.SubscriptionType;
import org.apache.pulsar.client.api.schema.Field;
import org.apache.pulsar.client.api.schema.GenericObject;
import org.apache.pulsar.client.api.schema.GenericRecord;
import org.apache.pulsar.common.naming.TopicName;
import org.apache.pulsar.common.schema.KeyValue;
import org.apache.pulsar.common.util.collections.GrowableArrayBlockingQueue;
import org.eclipse.jetty.util.ssl.SslContextFactory;
import org.eclipse.jetty.websocket.api.RemoteEndpoint;
import org.eclipse.jetty.websocket.api.Session;
import org.eclipse.jetty.websocket.api.annotations.OnWebSocketClose;
import org.eclipse.jetty.websocket.api.annotations.OnWebSocketConnect;
import org.eclipse.jetty.websocket.api.annotations.OnWebSocketMessage;
import org.eclipse.jetty.websocket.api.annotations.WebSocket;
import org.eclipse.jetty.websocket.client.ClientUpgradeRequest;
import org.eclipse.jetty.websocket.client.WebSocketClient;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* pulsar-client consume command implementation.
*
*/
@Parameters(commandDescription = "Consume messages from a specified topic")
public class CmdConsume {
private static final Logger LOG = LoggerFactory.getLogger(PulsarClientTool.class);
private static final String MESSAGE_BOUNDARY = "----- got message -----";
@Parameter(description = "TopicName", required = true)
private List mainOptions = new ArrayList();
@Parameter(names = { "-t", "--subscription-type" }, description = "Subscription type.")
private SubscriptionType subscriptionType = SubscriptionType.Exclusive;
@Parameter(names = { "-m", "--subscription-mode" }, description = "Subscription mode.")
private SubscriptionMode subscriptionMode = SubscriptionMode.Durable;
@Parameter(names = { "-p", "--subscription-position" }, description = "Subscription position.")
private SubscriptionInitialPosition subscriptionInitialPosition = SubscriptionInitialPosition.Latest;
@Parameter(names = { "-s", "--subscription-name" }, required = true, description = "Subscription name.")
private String subscriptionName;
@Parameter(names = { "-n",
"--num-messages" }, description = "Number of messages to consume, 0 means to consume forever.")
private int numMessagesToConsume = 1;
@Parameter(names = { "--hex" }, description = "Display binary messages in hex.")
private boolean displayHex = false;
@Parameter(names = { "--hide-content" }, description = "Do not write the message to console.")
private boolean hideContent = false;
@Parameter(names = { "-r", "--rate" }, description = "Rate (in msg/sec) at which to consume, "
+ "value 0 means to consume messages as fast as possible.")
private double consumeRate = 0;
@Parameter(names = { "--regex" }, description = "Indicate the topic name is a regex pattern")
private boolean isRegex = false;
@Parameter(names = { "-q", "--queue-size" }, description = "Consumer receiver queue size.")
private int receiverQueueSize = 0;
@Parameter(names = { "-mc", "--max_chunked_msg" }, description = "Max pending chunk messages")
private int maxPendingChunkedMessage = 0;
@Parameter(names = { "-ac",
"--auto_ack_chunk_q_full" }, description = "Auto ack for oldest message on queue is full")
private boolean autoAckOldestChunkedMessageOnQueueFull = false;
@Parameter(names = { "-ekv",
"--encryption-key-value" }, description = "The URI of private key to decrypt payload, for example "
+ "file:///path/to/private.key or data:application/x-pem-file;base64,*****")
private String encKeyValue;
@Parameter(names = { "-st", "--schema-type"}, description = "Set a schema type on the consumer, it can be 'bytes' or 'auto_consume'")
private String schematype = "bytes";
@Parameter(names = { "-pm", "--pool-messages" }, description = "Use the pooled message", arity = 1)
private boolean poolMessages = true;
private ClientBuilder clientBuilder;
private Authentication authentication;
private String serviceURL;
public CmdConsume() {
// Do nothing
}
/**
* Set client configuration.
*
*/
public void updateConfig(ClientBuilder clientBuilder, Authentication authentication, String serviceURL) {
this.clientBuilder = clientBuilder;
this.authentication = authentication;
this.serviceURL = serviceURL;
}
/**
* Interprets the message to create a string representation
*
* @param message
* The message to interpret
* @param displayHex
* Whether to display BytesMessages in hexdump style, ignored for simple text messages
* @return String representation of the message
*/
private String interpretMessage(Message message, boolean displayHex) throws IOException {
StringBuilder sb = new StringBuilder();
String properties = Arrays.toString(message.getProperties().entrySet().toArray());
String data;
Object value = message.getValue();
if (value == null) {
data = "null";
} else if (value instanceof byte[]) {
byte[] msgData = (byte[]) value;
data = interpretByteArray(displayHex, msgData);
} else if (value instanceof GenericObject) {
Map asMap = genericObjectToMap((GenericObject) value, displayHex);
data = asMap.toString();
} else if (value instanceof ByteBuffer) {
data = new String(getBytes((ByteBuffer) value));
} else {
data = value.toString();
}
String key = null;
if (message.hasKey()) {
key = message.getKey();
}
sb.append("key:[").append(key).append("], ");
if (!properties.isEmpty()) {
sb.append("properties:").append(properties).append(", ");
}
sb.append("content:").append(data);
return sb.toString();
}
private static String interpretByteArray(boolean displayHex, byte[] msgData) throws IOException {
String data;
ByteArrayOutputStream out = new ByteArrayOutputStream();
if (!displayHex) {
return new String(msgData);
} else {
HexDump.dump(msgData, 0, out, 0);
return out.toString();
}
}
private static Map genericObjectToMap(GenericObject value, boolean displayHex) throws IOException {
switch (value.getSchemaType()) {
case AVRO:
case JSON:
case PROTOBUF_NATIVE:
return genericRecordToMap((GenericRecord) value, displayHex);
case KEY_VALUE:
return keyValueToMap((KeyValue) value.getNativeObject(), displayHex);
default:
return primitiveValueToMap(value.getNativeObject(), displayHex);
}
}
private static Map keyValueToMap(KeyValue value, boolean displayHex) throws IOException {
if (value == null) {
return ImmutableMap.of("value", "NULL");
}
return ImmutableMap.of("key", primitiveValueToMap(value.getKey(), displayHex),
"value", primitiveValueToMap(value.getValue(), displayHex));
}
private static Map primitiveValueToMap(Object value, boolean displayHex) throws IOException {
if (value == null) {
return ImmutableMap.of("value", "NULL");
}
if (value instanceof GenericObject) {
return genericObjectToMap((GenericObject) value, displayHex);
}
if (value instanceof byte[]) {
value = interpretByteArray(displayHex, (byte[]) value);
}
return ImmutableMap.of("value", value.toString(), "type", value.getClass());
}
private static Map genericRecordToMap(GenericRecord value, boolean displayHex) throws IOException {
Map res = new HashMap<>();
for (Field f : value.getFields()) {
Object fieldValue = value.getField(f);
if (fieldValue instanceof GenericRecord) {
fieldValue = genericRecordToMap((GenericRecord) fieldValue, displayHex);
} else if (fieldValue == null) {
fieldValue = "NULL";
} else if (fieldValue instanceof byte[]) {
fieldValue = interpretByteArray(displayHex, (byte[]) fieldValue);
}
res.put(f.getName(), fieldValue);
}
return res;
}
/**
* Run the consume command.
*
* @return 0 for success, < 0 otherwise
*/
public int run() throws PulsarClientException, IOException {
if (mainOptions.size() != 1)
throw (new ParameterException("Please provide one and only one topic name."));
if (this.subscriptionName == null || this.subscriptionName.isEmpty())
throw (new ParameterException("Subscription name is not provided."));
if (this.numMessagesToConsume < 0)
throw (new ParameterException("Number of messages should be zero or positive."));
String topic = this.mainOptions.get(0);
if(this.serviceURL.startsWith("ws")) {
return consumeFromWebSocket(topic);
}else {
return consume(topic);
}
}
private int consume(String topic) {
int numMessagesConsumed = 0;
int returnCode = 0;
try {
ConsumerBuilder builder;
PulsarClient client = clientBuilder.build();
Schema schema = poolMessages ? Schema.BYTEBUFFER : Schema.BYTES;
if ("auto_consume".equals(schematype)) {
schema = Schema.AUTO_CONSUME();
} else if (!"bytes".equals(schematype)) {
throw new IllegalArgumentException("schema type must be 'bytes' or 'auto_consume");
}
builder = client.newConsumer(schema)
.subscriptionName(this.subscriptionName)
.subscriptionType(subscriptionType)
.subscriptionMode(subscriptionMode)
.subscriptionInitialPosition(subscriptionInitialPosition)
.poolMessages(poolMessages);
if (isRegex) {
builder.topicsPattern(Pattern.compile(topic));
} else {
builder.topic(topic);
}
if (this.maxPendingChunkedMessage > 0) {
builder.maxPendingChunkedMessage(this.maxPendingChunkedMessage);
}
if (this.receiverQueueSize > 0) {
builder.receiverQueueSize(this.receiverQueueSize);
}
builder.autoAckOldestChunkedMessageOnQueueFull(this.autoAckOldestChunkedMessageOnQueueFull);
if (isNotBlank(this.encKeyValue)) {
builder.defaultCryptoKeyReader(this.encKeyValue);
}
Consumer consumer = builder.subscribe();
RateLimiter limiter = (this.consumeRate > 0) ? RateLimiter.create(this.consumeRate) : null;
while (this.numMessagesToConsume == 0 || numMessagesConsumed < this.numMessagesToConsume) {
if (limiter != null) {
limiter.acquire();
}
Message msg = consumer.receive(5, TimeUnit.SECONDS);
if (msg == null) {
LOG.debug("No message to consume after waiting for 5 seconds.");
} else {
try {
numMessagesConsumed += 1;
if (!hideContent) {
System.out.println(MESSAGE_BOUNDARY);
String output = this.interpretMessage(msg, displayHex);
System.out.println(output);
} else if (numMessagesConsumed % 1000 == 0) {
System.out.println("Received " + numMessagesConsumed + " messages");
}
consumer.acknowledge(msg);
} finally {
msg.release();
}
}
}
client.close();
} catch (Exception e) {
LOG.error("Error while consuming messages");
LOG.error(e.getMessage(), e);
returnCode = -1;
} finally {
LOG.info("{} messages successfully consumed", numMessagesConsumed);
}
return returnCode;
}
@SuppressWarnings("deprecation")
@VisibleForTesting
public String getWebSocketConsumeUri(String topic) {
String serviceURLWithoutTrailingSlash = serviceURL.substring(0,
serviceURL.endsWith("/") ? serviceURL.length() - 1 : serviceURL.length());
TopicName topicName = TopicName.get(topic);
String wsTopic;
if (topicName.isV2()) {
wsTopic = String.format("%s/%s/%s/%s", topicName.getDomain(), topicName.getTenant(),
topicName.getNamespacePortion(), topicName.getLocalName());
} else {
wsTopic = String.format("%s/%s/%s/%s/%s", topicName.getDomain(), topicName.getTenant(),
topicName.getCluster(), topicName.getNamespacePortion(), topicName.getLocalName());
}
String uriFormat = "%s/ws" + (topicName.isV2() ? "/v2/" : "/")
+ "consumer/%s/%s?subscriptionType=%s&subscriptionMode=%s";
return String.format(uriFormat, serviceURLWithoutTrailingSlash, wsTopic, subscriptionName,
subscriptionType.toString(), subscriptionMode.toString());
}
@SuppressWarnings("deprecation")
private int consumeFromWebSocket(String topic) {
int numMessagesConsumed = 0;
int returnCode = 0;
URI consumerUri = URI.create(getWebSocketConsumeUri(topic));
WebSocketClient consumeClient = new WebSocketClient(new SslContextFactory(true));
ClientUpgradeRequest consumeRequest = new ClientUpgradeRequest();
try {
if (authentication != null) {
authentication.start();
AuthenticationDataProvider authData = authentication.getAuthData();
if (authData.hasDataForHttp()) {
for (Map.Entry kv : authData.getHttpHeaders()) {
consumeRequest.setHeader(kv.getKey(), kv.getValue());
}
}
}
} catch (Exception e) {
LOG.error("Authentication plugin error: " + e.getMessage());
return -1;
}
CompletableFuture connected = new CompletableFuture<>();
ConsumerSocket consumerSocket = new ConsumerSocket(connected);
try {
consumeClient.start();
} catch (Exception e) {
LOG.error("Failed to start websocket-client", e);
return -1;
}
try {
LOG.info("Trying to create websocket session..{}",consumerUri);
consumeClient.connect(consumerSocket, consumerUri, consumeRequest);
connected.get();
} catch (Exception e) {
LOG.error("Failed to create web-socket session", e);
return -1;
}
try {
RateLimiter limiter = (this.consumeRate > 0) ? RateLimiter.create(this.consumeRate) : null;
while (this.numMessagesToConsume == 0 || numMessagesConsumed < this.numMessagesToConsume) {
if (limiter != null) {
limiter.acquire();
}
String msg = consumerSocket.receive(5, TimeUnit.SECONDS);
if (msg == null) {
LOG.debug("No message to consume after waiting for 5 seconds.");
} else {
try {
String output = interpretByteArray(displayHex, Base64.getDecoder().decode(msg));
System.out.println(output); // print decode
} catch (Exception e) {
System.out.println(msg);
}
numMessagesConsumed += 1;
}
}
consumerSocket.awaitClose(2, TimeUnit.SECONDS);
} catch (Exception e) {
LOG.error("Error while consuming messages");
LOG.error(e.getMessage(), e);
returnCode = -1;
} finally {
LOG.info("{} messages successfully consumed", numMessagesConsumed);
}
return returnCode;
}
@WebSocket(maxTextMessageSize = 64 * 1024)
public static class ConsumerSocket {
private static final String X_PULSAR_MESSAGE_ID = "messageId";
private final CountDownLatch closeLatch;
private Session session;
private CompletableFuture connected;
final BlockingQueue incomingMessages;
public ConsumerSocket(CompletableFuture connected) {
this.closeLatch = new CountDownLatch(1);
this.connected = connected;
this.incomingMessages = new GrowableArrayBlockingQueue<>();
}
public boolean awaitClose(int duration, TimeUnit unit) throws InterruptedException {
return this.closeLatch.await(duration, unit);
}
@OnWebSocketClose
public void onClose(int statusCode, String reason) {
log.info("Connection closed: {} - {}", statusCode, reason);
this.session = null;
this.closeLatch.countDown();
}
@OnWebSocketConnect
public void onConnect(Session session) throws InterruptedException {
log.info("Got connect: {}", session);
this.session = session;
this.connected.complete(null);
}
@OnWebSocketMessage
public synchronized void onMessage(String msg) throws Exception {
JsonObject message = new Gson().fromJson(msg, JsonObject.class);
JsonObject ack = new JsonObject();
String messageId = message.get(X_PULSAR_MESSAGE_ID).getAsString();
ack.add("messageId", new JsonPrimitive(messageId));
// Acking the proxy
this.getRemote().sendString(ack.toString());
this.incomingMessages.put(msg);
}
public String receive(long timeout, TimeUnit unit) throws Exception {
return incomingMessages.poll(timeout, unit);
}
public RemoteEndpoint getRemote() {
return this.session.getRemote();
}
public Session getSession() {
return this.session;
}
public void close() {
this.session.close();
}
private static final Logger log = LoggerFactory.getLogger(ConsumerSocket.class);
}
}
