#download_uncompress

####Table of Contents

1. Overview
2. Module Description - What the module does and why it is useful
3. Setup - The basics of getting started with download_uncompress
   • What download_uncompress affects
   • Setup requirements
   • Beginning with download_uncompress
4. Usage - Configuration options and additional functionality
5. Reference - An under-the-hood peek at what the module is doing and how
6. Limitations - OS compatibility, etc.
7. Development - Guide for contributing to the module

##Overview

This is the download_uncompress module. It allows to download and uncompress a software distribution in a specified directory.

##Module Description

The module provides a utility define that takes care to download and uncompress a software distribution in a specified directory. The software distribution can be uncompressed with unzip or untar or leaved as it is. The operations are performed only if the expected file or folder does not yet exists.

##Setup

###What download_uncompress affects

The module installs the unzip package if it is not installed using stdlib ensure_packages type.

The module performs a wget from the specified url into the /tmp directory and possibly unzip the downloaded file into the destination folder. The base_url from which to download can be provided as a parameter and defaults to the value of the key distributions_base_url defined in hiera.

###Setup Requirements

This modules requires the following other modules to be installed:

• puppetlabs/stdlib

  to use the ensure_packages resource.

###Beginning with download_uncompress

To download and unzip SoftwareXY.zip from the base url specified by the key distributions_base_url defined in hiera, it is possible to use a declaration as the following:

download_uncompress {'dwnl_inst_swxy':
   download_base_url  => "http://jee.invallee.it/dist",
   distribution_name  => "SoftwareXY.zip"
   dest_folder   => '/tmp',
   creates       => "/tmp/SXYInstallFolder",
   uncompress    => 'tar.gz',
}

##Usage

It is convenient to specify via hiera the default bae url to be used to download software distributions; typically it would be some kind of internal repository where software binary packages are made available. An example hiera (JSON) declaration would be as follows:

{
  "distributions_base_url" : "http://site.x.y/dist"
}

Then, a typical declaration would be:

  download_uncompress { 'install_jboss_5':
    distribution_name => 'jboss-5.1.0.GA-jdk6.zip',
    dest_folder       => '/opt',
    creates           => '/opt/jboss-5.1.0.GA',
    uncompress        => 'zip',
    user              => jboss,
    group             => jboss,
  }

Alternatively, the base url can be given as a parameter:

  download_uncompress { "install_jboss-4.2.3.GA":
    download_base_url => "http://sourceforge.net/projects/jboss/files/JBoss",
    distribution_name => "JBoss-4.2.3.GA/jboss-4.2.3-jdk6.zip/download",
    dest_folder       => "/opt",
    creates           => "/opt/jboss-4.2.3.GA",
    uncompress        => 'zip',
    user              => jboss,
    group             => jboss,
  }

Or, the full url can be specified in one place:

  download_uncompress { "install_jboss-4.2.3.GA":
    distribution_name => "http://sourceforge.nt/projects/jboss/files/JBoss/JBoss-4.2.3.GA/jboss-4.2.3-jdk6.zip/download",
    dest_folder       => "/opt",
    creates           => "/opt/jboss-4.2.3.GA",
    uncompress        => 'zip',
    user              => jboss,
    group             => jboss,
  }

Another example, to put in place a JBoss library (no uncompression in this case):

  download_uncompress { "${postgresqlModulePath}/postgresql-9.1-903.jdbc4.jar":
    distribution_name => 'lib/postgresql-9.1-903.jdbc4.jar',
    dest_folder       => "${postgresqlModulePath}",
    creates           => "${postgresqlModulePath}/postgresql-9.1-903.jdbc4.jar",
    user              => jboss,
    group             => jboss,
  }

##Reference

###Public Defines

• download_uncompress::download_uncompress: Downloads and possibly uncompress a file from a given url to a specified destination folder

###Private Classes

• download_uncompress::dependencies: Install dependencies needed for the module, specifically the package unzip

###download_uncompress::download_uncompress Downloads and possibly uncompress a file from a given url to a specified destination folder.

####Parameters

#####download_base_url Base URL from which to download. Defaults to the distributions_base_url key defined in hiera.

#####distribution_name Name of the distribution to download or full URL, in which case the parameter download_base_url is ignored.

#####dest_folder Destination folder where to unzip (or possibly only download) the distribution.

#####creates Folder created after downloading and possibly unzipping, useful to make the resource type idempotent.

#####uncompress Specify the type of compression used by the distribution or if no uncompression is needed. Possible values are zip, tar.gz, jar. Any other value is interpreted as no uncompression needed. Defaults to false.

#####user user to be used when performing the download and the eventual uncompression. Defaults to root.

#####group group to be used when performing the download and the eventual uncompression. Defaults to root.

#####install_unzip Choose whether to install unzip or not. Defaults to true.

#####wget_options options to pass to the wget command. Defaults to the empty string.

##Limitations

At the moment the module targets only OpenJDK on Ubuntu platforms. Specifically, it is tested only on Ubuntu 10.04, 12.04, and 14.04 distributions, although probably it will work also on more recent versions.

##Development

If you need some feature please send me a (pull) request or send me an email at: dsestero 'at' gmail 'dot' com.