Merge pull request #465 from darko-poljak/cdist-type__hosts

New type __hosts

cdist/conf/type/__hosts/man.rst

@@ -0,0 +1,57 @@
+cdist-type__hosts(7)
+====================
+
+NAME
+----
+
+cdist-type__hosts - manage entries in /etc/hosts
+
+DESCRIPTION
+-----------
+
+Add or remove entries from */etc/hosts* file.
+
+OPTIONAL PARAMETERS
+-------------------
+
+state
+
+    If state is ``present``, make *object_id* resolve to *ip*. If
+    state is ``absent``, *object_id* will no longer resolve via
+    */etc/hosts*, if it was previously configured with this type.
+    Manually inserted entries are unaffected.
+
+ip
+
+    IP address, to which hostname (=\ *object_id*) must resolve. If
+    state is ``present``, this parameter is mandatory, if state is
+    ``absent``, this parameter is silently ignored.
+
+EXAMPLES
+--------
+
+.. code-block:: sh
+
+    # Now `funny' resolves to 192.168.1.76,
+    __hosts funny --ip 192.168.1.76
+    # and `happy' no longer resolve via /etc/hosts if it was
+    # previously configured via __hosts.
+    __hosts happy --state absent
+
+SEE ALSO
+--------
+
+:strong:`hosts`\ (5)
+
+AUTHORS
+-------
+
+Dmitry Bogatov <KAction@gnu.org>
+
+
+COPYING
+-------
+
+Copyright (C) 2015,2016 Dmitry Bogatov. Free use of this software is granted
+under the terms of the GNU General Public License version 3 or later
+(GPLv3+).

cdist/conf/type/__hosts/manifest

@@ -0,0 +1,29 @@
+#!/bin/sh
+# Copyright (C) 2015  Bogatov Dmitry <KAction@gnu.org>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+set -ue
+
+hostname="$__object_id"
+state="$(cat "$__object/parameter/state")"
+marker="# __hosts/$hostname"
+
+set -- "__hosts/$hostname" --file /etc/hosts --state "$state"
+
+if [ "$state" = absent ] ; then
+	__line "$@" --regex "$marker"
+else
+	ip="$(cat "$__object/parameter/ip")"
+	__line "$@" --line "$ip $hostname $marker"
+fi

cdist/conf/type/__hosts/parameter/default/state

@@ -0,0 +1 @@
+present

cdist/conf/type/__hosts/parameter/optional

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+state
+ip

docs/changelog

@@ -7,6 +7,7 @@ next:
 	* Type __cron: Fix filter for new cron on sles12 sp2 (Daniel Heule)
 	* Type __docker: Support absent state (Dominique Roux)
 	* Type __docker_compose: Support absent state (Dominique Roux)
+	* New type: __hosts (Dmitry Bogatov)
 
 4.4.1: 2016-12-17
 	* Documentation: Update docs for types that used man.rst as symbolic links (Darko Poljak)