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Chapter 2. Installation

This chapter guides you through the steps to install AMQ JavaScript in your environment.

2.1. Prerequisites
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To begin installation, use your subscription to access AMQ distribution files and repositories.

To use AMQ JavaScript, you must also install and configure Node.js for your environment. See the Node.js website for more information.

AMQ JavaScript depends on the Node.js debug module. See the npm page for installation instructions.

2.2. Installing on Red Hat Enterprise Linux
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AMQ JavaScript is distributed as a zip archive. Follow these steps to install it in your environment.

  1. Open a browser and log in to the Red Hat Customer Portal Product Downloads page at access.redhat.com/downloads.
  2. Locate the Red Hat AMQ Clients entry in the JBOSS INTEGRATION AND AUTOMATION category.
  3. Click Red Hat AMQ Clients. The Software Downloads page opens.
  4. Download the AMQ JavaScript Client zip file.

  5. Use the unzip command to extract the file contents into a directory of your choosing. This creates a new subdirectory named nodejs-rhea-<version>. 

    $ unzip nodejs-rhea-<version>.zip
Archive:  nodejs-rhea-<version>.zip
   creating: nodejs-rhea-<version>/
   creating: nodejs-rhea-<version>/node_modules/
   creating: nodejs-rhea-<version>/node_modules/rhea/
[...]
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  6. Configure your environment to use the installed library. Add the node_modules directory to the NODE_PATH environment variable. 

    $ cd nodejs-rhea-<version>
$ export NODE_PATH=$PWD/node_modules:$NODE_PATH
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    To make this configuration take effect for all new console sessions, set NODE_PATH in your $HOME/.bashrc file.

  7. Test your installation. The following command returns zero if it can successfully import the installed library. 

    $ node -e 'require("rhea")'; echo $?
0
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2.3. Installing on Microsoft Windows
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  1. Open a browser and log in to the Red Hat Customer Portal Product Downloads page at access.redhat.com/downloads.
  2. Locate the Red Hat AMQ Clients entry in the JBOSS INTEGRATION AND AUTOMATION category.
  3. Click Red Hat AMQ Clients. The Software Downloads page opens.
  4. Download the AMQ JavaScript Client zip file.
  5. Extract the file contents into a directory of your choosing by right-clicking on the zip file and selecting Extract All. This creates a new subdirectory named nodejs-rhea-<version>.

  6. Configure your environment to use the installed library. Add the node_modules directory to the NODE_PATH environment variable. 

    $ cd nodejs-rhea-<version>
$ set NODE_PATH=%cd%\node_modules;%NODE_PATH%
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2.4. Preparing the library for use in browsers
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AMQ JavaScript can run inside a web browser. To create a browser-compatible version of the library, use the npm run browserify command. 

$ cd nodejs-rhea-<version>/node_modules/rhea
$ npm install
$ npm run browserify
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This produces a file named rhea.js that can be used in browser-based applications.

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