A puppet recipe for wget, a useful tool to download arbitary files from the web
Ruby Puppet
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README.md

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A Puppet module to download files with wget, supporting authentication.

Example

install wget:

    include wget
    wget::fetch { "download Google's index":
      source      => 'http://www.google.com/index.html',
      destination => '/tmp/',
      timeout     => 0,
      verbose     => false,
    }

or alternatively:

    wget::fetch { 'http://www.google.com/index.html':
      destination => '/tmp/',
      timeout     => 0,
      verbose     => false,
    }

If $destination ends in either a forward or backward slash, it will treat the destination as a directory and name the file with the basename of the $source.

  wget::fetch { 'http://mywebsite.com/apples':
    destination => '/downloads/',
  }

Download from an array of URLs into one directory

  $manyfiles = [
    'http://mywebsite.com/apples',
    'http://mywebsite.com/oranges',
    'http://mywebsite.com/bananas',
  ]

  wget::fetch { $manyfiles:
    destination => '/downloads/',
  }

This fetches a document which requires authentication:

    wget::fetch { 'Fetch secret PDF':
      source      => 'https://confidential.example.com/secret.pdf',
      destination => '/tmp/',
      user        => 'user',
      password    => 'p$ssw0rd',
      timeout     => 0,
      verbose     => false,
    }

This caches the downloaded file in an intermediate directory to avoid repeatedly downloading it. This uses the timestamping (-N) and prefix (-P) wget options to only re-download if the source file has been updated.

    wget::fetch { 'https://tool.com/downloads/tool-1.0.tgz':
      destination => '/tmp/',
      cache_dir   => '/var/cache/wget',
    }

It's assumed that the cached file will be named after the source's URL basename but this assumption can be broken if wget follows some redirects. In this case you must inform the correct filename in the cache like this:

    wget::fetch { 'https://tool.com/downloads/tool-latest.tgz':
      destination => '/tmp/tool-1.0.tgz',
      cache_dir   => '/var/cache/wget',
      cache_file  => 'tool-1.1.tgz',
      execuser    => 'fileowner',
      group       => 'filegroup',
    }

Checksum can be used in the source_hash parameter, with the MD5-sum of the content to be downloaded. If content exists, but does not match it is removed before downloading.

If you want to use your own unless condition, you can do it. This example uses wget to download the latest version of Wordpress to your destination folder only if the folder is empty (test used returns 1 if directory is empty or 0 if not).

    wget::fetch { 'wordpress':
        source      => 'https://wordpress.org/latest.tar.gz',
        destination => "/var/www/html/latest_wordpress.tar.gz",
        timeout     => 0,
        unless      => "test $(ls -A /var/www/html 2>/dev/null)",
    }

Building

Testing is done with rspec, Beaker-rspec, Beaker)

To test and build the module

bundle install
# run specs
rake

# run Beaker system tests with vagrant vms
rake beaker
# to use other vm from the list spec/acceptance/nodesets and not destroy the vm after the tests
BEAKER_destroy=no BEAKER_set=centos-65-x64-docker bundle exec rake beaker

# Release the Puppet module to the Forge, doing a clean, build, tag, push, bump_commit and git push
rake module:release

License

Copyright 2011-2013 MaestroDev

Licensed 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.