Issue 3638 - Introduce class adblockplus::host

modules/adblockplus/manifests/host.pp

+# == Type: adblockplus::host
+#
+# Manage host information for any node associated with the same authority.
+#
+# This is currently a wrapper around base::explicit_host_record(), but meant
+# to become the official resource for host information within the adblockplus::*
+# namespace.
+#
+# === Parameters:
+#
+# Below please find a description of those parameters which are considered
+# official:
+#
+# [*ensure*]
+#   Whether to ensure the host record being 'present' or 'absent'/'purged'.
+#
+# All others have been introduced to resemble the parameter list of type
+# base::explicit_host_record() and subject to change after the base module
+# has been removed (see https://issues.adblockplus.org/ticket/3574).
+#
+# === Properties:
+#
+# The properties listed below are official symbols that may become regular
+# parameters at some point:
+#
+# [*fqdn*]
+#   The fully qualified domain name associated with the host.
+#
+# [*ips*]
+#   A list of one or more IPv4 and IPv6 addresses associated with the host.
+#
+# [*rsa_public_key*]
+#   The host's public RSA key, i.e "ssh-rsa AA.... host1.example.com".
+#
+# For now the values are computed based on the legacy input values.
+#
+# === Examples:
+#
+#   adblockplus::host {'node1':
+#     ensure => 'present',
+#     ip => '10.8.0.1',
+#   }
+#
+#   adblockplus::host {'node2':
+#     ensure => 'absent',
+#     ip => '10.8.0.2',
+#   }
+#
+#   $node1 = Adblockplus::Host['node1']
+#   $public_key = getparam($node1, 'rsa_public_key')
+#   $ensure = getparam(Adblockplus::Host['node2'], 'ensure')
+#
+define adblockplus::host (
+  $ensure         = 'present',
+  $ip,
+  $ssh_public_key = undef,
+  $role           = undef,
+  $dns            = undef,
+  $groups         = undef,
+) {
+
+  include adblockplus
+  include base
+
+  # Officially exported and supported instance properties replacing
+  # undocumented magic, see https://issues.adblockplus.org/ticket/3638
+  $fqdn = $dns ? {undef => "$name.$adblockplus::authority", default => "$dns"}
+  $ips = is_array($ip) ? {true => $ip, default => [$ip]}
+  $rsa_public_key = "ssh-rsa $ssh_public_key $fqdn"
+
+  # To become removed together with class base,
+  # see https://issues.adblockplus.org/ticket/3574
+  base::explicit_host_record {$name:
+    ip => $ips,
+    ssh_public_key => $ssh_public_key,
+    role => $role,
+    dns => $fqdn,
+    groups => $groups,
+  }
+
+  # Extracted from base::explicit_host_record() to ensure continuity with
+  # existing records, despite the newly centralized $fqdn computation
+  @host {$fqdn:
+    ensure => $ensure,
+    ip => $ips[0],
+    tag => 'adblockplus::host',
+  }
+}