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ActiveMQ example source code file (CommandShellOutputFormatter.java)

This example ActiveMQ source code file (CommandShellOutputFormatter.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - ActiveMQ tags/keywords

collection, io, iterator, iterator, management, map, object, object, objectinstance, objectname, outputstream, printstream, printstream, string, string, unknown, util

The ActiveMQ CommandShellOutputFormatter.java source code

/**
 * 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.formatter;

import java.io.OutputStream;
import java.io.PrintStream;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
import java.util.Arrays;

import javax.jms.Message;
import javax.management.Attribute;
import javax.management.AttributeList;
import javax.management.ObjectInstance;
import javax.management.ObjectName;

public class CommandShellOutputFormatter implements OutputFormatter {
    private OutputStream outputStream;
    private PrintStream out;

    public CommandShellOutputFormatter(OutputStream out) {

        this.outputStream = out;
        if (out instanceof PrintStream) {
            this.out = (PrintStream)out;
        } else {
            this.out = new PrintStream(out);
        }
    }

    /**
     * Retrieve the output stream being used by the formatter
     * 
     * @return
     */
    public OutputStream getOutputStream() {
        return outputStream;
    }

    /**
     * Print an ObjectInstance format of an mbean
     * 
     * @param mbean - mbean to print
     */
    public void printMBean(ObjectInstance mbean) {
        printMBean(mbean.getObjectName());
    }

    /**
     * Print an ObjectName format of an mbean
     * 
     * @param mbean - mbean to print
     */
    public void printMBean(ObjectName mbean) {
        printMBean(mbean.getKeyPropertyList());
    }

    /**
     * Print an AttributeList format of an mbean
     * 
     * @param mbean - mbean to print
     */
    public void printMBean(AttributeList mbean) {
        for (Iterator i = mbean.iterator(); i.hasNext();) {
            Attribute attrib = (Attribute)i.next();
            if (attrib.getValue() instanceof ObjectName) {
                printMBean((ObjectName)attrib.getValue());
            } else if (attrib.getValue() instanceof ObjectInstance) {
                printMBean((ObjectInstance)attrib.getValue());
            } else {
                out.println(attrib.getName() + " = " + attrib.getValue().toString());
                out.println();
            }
        }
    }

    /**
     * Print a Map format of an mbean
     * 
     * @param mbean - mbean to print
     */
    public void printMBean(Map mbean) {
        for (Iterator i = mbean.keySet().iterator(); i.hasNext();) {
            String key = (String)i.next();
            String val = mbean.get(key).toString();
            out.println(key + " = " + val);
        }
        out.println();
    }

    /**
     * Print a collection of mbean
     * 
     * @param mbean - collection of mbeans
     */
    public void printMBean(Collection mbean) {
        for (Iterator i = mbean.iterator(); i.hasNext();) {
            Object obj = i.next();
            if (obj instanceof ObjectInstance) {
                printMBean((ObjectInstance)obj);
            } else if (obj instanceof ObjectName) {
                printMBean((ObjectName)obj);
            } else if (obj instanceof Map) {
                printMBean((Map)obj);
            } else if (obj instanceof AttributeList) {
                printMBean((AttributeList)obj);
            } else if (obj instanceof Collection) {
                printMessage((Collection)obj);
            } else {
                printException(new UnsupportedOperationException("Unknown mbean type: " + obj.getClass().getName()));
            }
        }
    }

    /**
     * Print a Map format of a JMS message
     * 
     * @param msg
     */
    public void printMessage(Map msg) {
        for (Iterator i = msg.keySet().iterator(); i.hasNext();) {
            String key = (String)i.next();
            String val = msg.get(key).toString();
            out.println(key + " = " + val);
        }
        out.println();
    }

    /**
     * Print a Message format of a JMS message
     * 
     * @param msg - JMS message to print
     */
    public void printMessage(Message msg) {
        // TODO
    }

    /**
     * Print a collection of JMS messages
     * 
     * @param msg - collection of JMS messages
     */
    public void printMessage(Collection msg) {
        for (Iterator i = msg.iterator(); i.hasNext();) {
            Object obj = i.next();
            if (obj instanceof Message) {
                printMessage((Message)obj);
            } else if (obj instanceof Map) {
                printMessage((Map)obj);
            } else if (obj instanceof Collection) {
                printMessage((Collection)obj);
            } else {
                printException(new UnsupportedOperationException("Unknown message type: " + obj.getClass().getName()));
            }
        }
    }

    /**
     * Print help messages
     * 
     * @param helpMsgs - help messages to print
     */
    public void printHelp(String[] helpMsgs) {
        for (int i = 0; i < helpMsgs.length; i++) {
            out.println(helpMsgs[i]);
        }
        out.println();
    }

    /**
     * Print an information message
     * 
     * @param info - information message to print
     */
    public void printInfo(String info) {
        out.println("INFO: " + info);
    }

    /**
     * Print an exception message
     * 
     * @param e - exception to print
     */
    public void printException(Exception e) {
        out.println("ERROR: " + e);
        e.printStackTrace(out);
    }

    /**
     * Print a version information
     * 
     * @param version - version info to print
     */
    public void printVersion(String version) {
        out.println("");
        out.println("ActiveMQ " + version);
        out.println("For help or more information please see: http://activemq.apache.org");
        out.println("");
    }

    /**
     * Print a generic key value mapping
     * 
     * @param map to print
     */
    public void print(Map map) {
        for (Iterator i = map.keySet().iterator(); i.hasNext();) {
            String key = (String)i.next();
            String val = map.get(key).toString();
            out.println(key + " = " + val);
        }
        out.println();
    }

    /**
     * Print a generic array of strings
     * 
     * @param strings - string array to print
     */
    public void print(String[] strings) {
        for (int i = 0; i < strings.length; i++) {
            out.println(strings[i]);
        }
        out.println();
    }

    /**
     * Print a collection of objects
     * 
     * @param collection - collection to print
     */
    public void print(Collection collection) {
        for (Iterator i = collection.iterator(); i.hasNext();) {
            out.println(i.next().toString());
        }
        out.println();
    }

    /**
     * Print a java string
     * 
     * @param string - string to print
     */
    public void print(String string) {
        out.println(string);
    }

}

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