delme

gistfile1.pp

node web-1 {
     $role = 'web-app-a'
	$has_apache = true;
 
	include php5
}
 
node web-2 {
       $role = 'web-app-b'
       $has_fcgi=true
 
	include php5
}
 
# has both enabled, but needs a special config
node web-3 {
       $role = 'web-app-c'
       $has_fcgi=true
       $has_apache=true
 
	include php5
}

gistfile2.pp

class php5 {
	if ($::has_fcgi)
		package { 'php5-cli' : ensure => installed }
	}
	if ($::has_apache) {
		package { 'php5-apache' : ensure => installed }
	}
	if ($::role == 'web-app-c')
		package { 'php5-web-app-c-special-module' }
		file { '/etc/php5/php.ini' :
			source => 'puppet:///modules/php5/php.ini-web-app-c'
		}
	}
}
 

gistfile3.pp

class php5(
	$has_fcgi = false,
	$has_apache = false,
	$role = undef
) {
	if ($has_fcgi)
		package { 'php5-cli' : ensure => installed }
	}
	if ($has_apache) {
		package { 'php5-apache' : ensure => installed }
	}
	if ($role == 'web-app-c') {
              package { 'php5-web-app-c-special-module' }

		file { '/etc/php5/php.ini' :
			source => 'puppet:///modules/php5/php.ini-web-app-c'
		}
	}
}

gistfile4.pp

node 'web-1' {
    $role = 'web-app-a'
    $has_apache = true
    class { 'php5' :
        has_apache => true,
        role       => $role
    }
}
 
node 'web-2' {
    $role = 'web-app-b'
    $has_fcgi = true
    class { 'php5' :
        has_fcgi => true,
        role     => $role
    }
}

gistfile5.pp

node 'web-1' {
  $role = 'web-app-a'
  $has_apache = true
  class { 'php5' :
    has_apache => true,
    role       => $role
  }
}
 
node 'web-2' {
  $role = 'web-app-b'
  $has_fcgi = true
  class { 'php5' :
    has_fcgi   => true,
    role       => $role
  }
}

gistfile6.pp

if ($role == 'web-app-c') {
  package { 'php5-web-app-c-special-module' }

  file { '/etc/php5/php.ini' :
    source => 'puppet:///modules/php5/php.ini-web-app-c'
  }
}