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/**
* 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.activemq.console.command;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import java.util.StringTokenizer;
import javax.jms.Destination;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.command.ActiveMQTopic;
import org.apache.activemq.console.util.AmqMessagesUtil;
public class AmqBrowseCommand extends AbstractAmqCommand {
public static final String QUEUE_PREFIX = "queue:";
public static final String TOPIC_PREFIX = "topic:";
public static final String VIEW_GROUP_HEADER = "header:";
public static final String VIEW_GROUP_CUSTOM = "custom:";
public static final String VIEW_GROUP_BODY = "body:";
protected String[] helpFile = new String[] {
"Task Usage: Main browse --amqurl [browse-options] ",
"Description: Display selected destination's messages.",
"",
"Browse Options:",
" --amqurl Set the broker URL to connect to.",
" --msgsel Add to the search list messages matched by the query similar to",
" the messages selector format.",
" --factory Load className as the javax.jms.ConnectionFactory to use for creating connections.",
" --passwordFactory Load className as the org.apache.activemq.console.command.PasswordFactory",
" for retrieving the password from a keystore.",
" --user Username to use for JMS connections.",
" --password Password to use for JMS connections.",
" -V Predefined view that allows you to view the message header, custom",
" message header, or the message body.",
" --view ,,... Select the specific attribute of the message to view.",
" --version Display the version information.",
" -h,-?,--help Display the browse broker help information.",
"",
"Examples:",
" Main browse --amqurl tcp://localhost:61616 FOO.BAR",
" - Print the message header, custom message header, and message body of all messages in the",
" queue FOO.BAR",
"",
" Main browse --amqurl tcp://localhost:61616 -Vheader,body queue:FOO.BAR",
" - Print only the message header and message body of all messages in the queue FOO.BAR",
"",
" Main browse --amqurl tcp://localhost:61616 -Vheader --view custom:MyField queue:FOO.BAR",
" - Print the message header and the custom field 'MyField' of all messages in the queue FOO.BAR",
"",
" Main browse --amqurl tcp://localhost:61616 --msgsel JMSMessageID='*:10',JMSPriority>5 FOO.BAR",
" - Print all the message fields that has a JMSMessageID in the header field that matches the",
" wildcard *:10, and has a JMSPriority field > 5 in the queue FOO.BAR",
" * To use wildcard queries, the field must be a string and the query enclosed in ''",
"",
" Main browse --amqurl tcp://localhost:61616 --user someUser --password somePass FOO.BAR",
" - Print the message header, custom message header, and message body of all messages in the",
" queue FOO.BAR, using someUser as the user name, and somePass as the password",
"",
" Main browse --amqurl tcp://localhost:61616 --user someUser --password somePass --factory org.apache.activemq.ActiveMQConnectionFactory --passwordFactory org.apache.activemq.AMQPasswordFactory FOO.BAR",
" - Print the message header, custom message header, and message body of all messages in the",
" queue FOO.BAR, using someUser as the user name, org.apache.activemq.AMQFactorySubClass to create JMS connections,",
" and org.apache.activemq.console.command.DefaultPasswordFactory to turn somePass into the password to be used.",
"",
};
private final List queryAddObjects = new ArrayList(10);
private final List querySubObjects = new ArrayList(10);
private final Set groupViews = new HashSet(10);
private final Set queryViews = new HashSet(10);
@Override
public String getName() {
return "browse";
}
@Override
public String getOneLineDescription() {
return "Display selected messages in a specified destination.";
}
/**
* Execute the browse command, which allows you to browse the messages in a
* given JMS destination
*
* @param tokens - command arguments
* @throws Exception
*/
protected void runTask(List tokens) throws Exception {
try {
// If no destination specified
if (tokens.isEmpty()) {
context.printException(new IllegalArgumentException("No JMS destination specified."));
return;
}
// If no broker url specified
if (getBrokerUrl() == null) {
context.printException(new IllegalStateException("No broker url specified. Use the --amqurl option to specify a broker url."));
return;
}
// Display the messages for each destination
for (Iterator i = tokens.iterator(); i.hasNext();) {
String destName = (String)i.next();
Destination dest;
// If destination has been explicitly specified as a queue
if (destName.startsWith(QUEUE_PREFIX)) {
dest = new ActiveMQQueue(destName.substring(QUEUE_PREFIX.length()));
// If destination has been explicitly specified as a topic
} else if (destName.startsWith(TOPIC_PREFIX)) {
dest = new ActiveMQTopic(destName.substring(TOPIC_PREFIX.length()));
// By default destination is assumed to be a queue
} else {
dest = new ActiveMQQueue(destName);
}
// Query for the messages to view
List addMsgs = AmqMessagesUtil.getMessages(getConnectionFactory(), dest, queryAddObjects);
// Query for the messages to remove from view
if (querySubObjects.size() > 0) {
List subMsgs = AmqMessagesUtil.getMessages(getConnectionFactory(), dest, querySubObjects);
addMsgs.removeAll(subMsgs);
}
// Display the messages
context.printMessage(AmqMessagesUtil.filterMessagesView(addMsgs, groupViews, queryViews));
}
} catch (Exception e) {
context.printException(new RuntimeException("Failed to execute browse task. Reason: " + e));
throw new Exception(e);
}
}
/**
* Handle the --msgsel, --xmsgsel, --view, -V options.
*
* @param token - option token to handle
* @param tokens - succeeding command arguments
* @throws Exception
*/
protected void handleOption(String token, List tokens) throws Exception {
// If token is an additive message selector option
if (token.startsWith("--msgsel")) {
// If no message selector is specified, or next token is a new
// option
if (tokens.isEmpty() || ((String)tokens.get(0)).startsWith("-")) {
context.printException(new IllegalArgumentException("Message selector not specified"));
return;
}
StringTokenizer queryTokens = new StringTokenizer((String)tokens.remove(0), COMMAND_OPTION_DELIMETER);
while (queryTokens.hasMoreTokens()) {
queryAddObjects.add(queryTokens.nextToken());
}
} else if (token.startsWith("--xmsgsel")) {
// If token is a substractive message selector option
// If no message selector is specified, or next token is a new option
if (tokens.isEmpty() || ((String)tokens.get(0)).startsWith("-")) {
context.printException(new IllegalArgumentException("Message selector not specified"));
return;
}
StringTokenizer queryTokens = new StringTokenizer((String)tokens.remove(0), COMMAND_OPTION_DELIMETER);
while (queryTokens.hasMoreTokens()) {
querySubObjects.add(queryTokens.nextToken());
}
} else if (token.startsWith("--view")) {
// If token is a view option
// If no view specified, or next token is a new option
if (tokens.isEmpty() || ((String)tokens.get(0)).startsWith("-")) {
context.printException(new IllegalArgumentException("Attributes to view not specified"));
return;
}
// Add the attributes to view
StringTokenizer viewTokens = new StringTokenizer((String)tokens.remove(0), COMMAND_OPTION_DELIMETER);
while (viewTokens.hasMoreTokens()) {
String viewToken = viewTokens.nextToken();
// If view is explicitly specified to belong to the JMS header
if (viewToken.equals(VIEW_GROUP_HEADER)) {
queryViews.add(AmqMessagesUtil.JMS_MESSAGE_HEADER_PREFIX + viewToken.substring(VIEW_GROUP_HEADER.length()));
// If view is explicitly specified to belong to the JMS
// custom header
} else if (viewToken.equals(VIEW_GROUP_CUSTOM)) {
queryViews.add(AmqMessagesUtil.JMS_MESSAGE_CUSTOM_PREFIX + viewToken.substring(VIEW_GROUP_CUSTOM.length()));
// If view is explicitly specified to belong to the JMS body
} else if (viewToken.equals(VIEW_GROUP_BODY)) {
queryViews.add(AmqMessagesUtil.JMS_MESSAGE_BODY_PREFIX + viewToken.substring(VIEW_GROUP_BODY.length()));
// If no view explicitly specified, let's check the view for
// each group
} else {
queryViews.add(AmqMessagesUtil.JMS_MESSAGE_HEADER_PREFIX + viewToken);
queryViews.add(AmqMessagesUtil.JMS_MESSAGE_CUSTOM_PREFIX + viewToken);
queryViews.add(AmqMessagesUtil.JMS_MESSAGE_BODY_PREFIX + viewToken);
}
}
} else if (token.startsWith("-V")) {
// If token is a predefined group view option
String viewGroup = token.substring(2);
// If option is a header group view
if (viewGroup.equals("header")) {
groupViews.add(AmqMessagesUtil.JMS_MESSAGE_HEADER_PREFIX);
// If option is a custom header group view
} else if (viewGroup.equals("custom")) {
groupViews.add(AmqMessagesUtil.JMS_MESSAGE_CUSTOM_PREFIX);
// If option is a body group view
} else if (viewGroup.equals("body")) {
groupViews.add(AmqMessagesUtil.JMS_MESSAGE_BODY_PREFIX);
// Unknown group view
} else {
context.printInfo("Unknown group view: " + viewGroup + ". Ignoring group view option.");
}
} else {
// Let super class handle unknown option
super.handleOption(token, tokens);
}
}
/**
* Print the help messages for the browse command
*/
protected void printHelp() {
context.printHelp(helpFile);
}
}