init.pp

# Class: java
#
# This module manages the Java runtime package
#
# Parameters:
#
#  [*distribution*]
#    The java distribution to install. Can be one of "jdk" or "jre",
#    or other platform-specific options where there are multiple
#    implementations available (eg: OpenJDK vs Oracle JDK).
#
#
#  [*version*]
#    The version of java to install. By default, this module simply ensures
#    that java is present, and does not require a specific version.
#
#  [*package*]
#    The name of the java package. This is configurable in case a non-standard
#    java package is desired.
#
#  [*java_alternative*]
#    The name of the java alternative to use on Debian systems.
#    "update-java-alternatives -l" will show which choices are available.
#    If you specify a particular package, you will almost always also
#    want to specify which java_alternative to choose. If you set
#    this, you also need to set the path below.
#
#  [*java_alternative_path*]
#    The path to the "java" command on Debian systems. Since the
#    alternatives system makes it difficult to verify which
#    alternative is actually enabled, this is required to ensure the
#    correct JVM is enabled.
#
# Actions:
#
# Requires:
#
# Sample Usage:
#
class java(
  $distribution          = 'jdk',
  $version               = 'present',
  $package               = undef,
  $java_alternative      = undef,
  $java_alternative_path = undef
) {
  include java::params

  case $::osfamily {
    default: {
      validate_re($version, 'present|installed|latest|^[._0-9a-zA-Z:-]+$')

      if has_key($java::params::java, $distribution) {
        $default_package_name     = $java::params::java[$distribution]['package']
        $default_alternative      = $java::params::java[$distribution]['alternative']
        $default_alternative_path = $java::params::java[$distribution]['alternative_path']
      } else {
        fail("Java distribution ${distribution} is not supported.")
      }

      $use_java_package_name = $package ? {
        default => $package,
        undef   => $default_package_name,
      }

      ## If $java_alternative is set, use that.
      ## Elsif the DEFAULT package is being used, then use $default_alternative.
      ## Else undef
      $use_java_alternative = $java_alternative ? {
        default => $java_alternative,
        undef   => $use_java_package_name ? {
          $default_package_name => $default_alternative,
          default               => undef,
        }
      }

      ## Same logic as $java_alternative above.
      $use_java_alternative_path = $java_alternative_path ? {
        default => $java_alternative_path,
        undef   => $use_java_package_name ? {
          $default_package_name => $default_alternative_path,
          default               => undef,
        }
      }

      anchor { 'java::begin:': }
      ->
      package { 'java':
        ensure => $version,
        name   => $use_java_package_name,
      }
      ->
      class { 'java::config': }
      -> anchor { 'java::end': }
    }
    'windows': {
      if $distribution == "jdk" {
        fail("The JDK is currently unsupported for Windows via Puppet")
      }

      $sysdrive = $java::params::sysdrive
      $bundleId = $java::params::java[$distribution]['package']
      $jre_file    = ".\java_install.exe"
      $bundle_url  = "http://javadl.sun.com/webapps/download/AutoDL?BundleId=${bundleId}"

      exec { 'download_java':
        command => "powershell -NoProfile -ExecutionPolicy remotesigned -command \"(new-object net.webclient).DownloadFile('${bundle_url}', '${jre_file}')\"",
        path    => "${sysdrive}\\windows\\system32;${sysdrive}\\windows\\system32\\WindowsPowerShell\\v1.0",
        unless  => "cmd.exe /c If NOT EXIST ${jre_file} Exit 1",
      }

      #
      # We should check if we are running on Hyper-V server.  If yes, then
      # do not install the Java Web components, other wise, we probably should...
      #
      $web_java = 'WEB_JAVA=0'

      exec { 'install_jre':
        command => "cmd /c \"${jre_file} /s ${web_java}\"",
        path    => "${sysdrive}\\windows\\system32;${sysdrive}\\windows\\system32\\WindowsPowerShell\\v1.0",
        require => Exec[ 'download_java' ],
        unless  => "cmd.exe /c If NOT EXIST \"${java::params::java_root_dir}\" Exit 1",
      }
      
      Exec['download_java'] -> Exec['install_jre']]
    }
  }
}