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org.apache.pulsar.client.cli.AbstractCmdConsume 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.pulsar.client.internal.PulsarClientImplementationBinding.getBytes;
import com.google.common.collect.ImmutableMap;
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.nio.ByteBuffer;
import java.util.Arrays;
import java.util.HashMap;
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 org.apache.commons.io.HexDump;
import org.apache.pulsar.client.api.Authentication;
import org.apache.pulsar.client.api.ClientBuilder;
import org.apache.pulsar.client.api.Message;
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.schema.KeyValue;
import org.apache.pulsar.common.util.collections.GrowableArrayBlockingQueue;
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.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* common part of consume command and read command of pulsar-client.
*
*/
public abstract class AbstractCmdConsume {
protected static final Logger LOG = LoggerFactory.getLogger(PulsarClientTool.class);
protected static final String MESSAGE_BOUNDARY = "----- got message -----";
protected ClientBuilder clientBuilder;
protected Authentication authentication;
protected String serviceURL;
public AbstractCmdConsume() {
// 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
*/
protected 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();
}
protected 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();
}
}
protected 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);
}
}
protected 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));
}
protected 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());
}
protected 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;
}
@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);
}
}
