Merge pull request #747 from 4nd3r/__check_messages

new type: __check_messages

cdist/conf/type/__check_messages/gencode-remote

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+#!/bin/sh -e
+#
+# 2019 Ander Punnar (ander-at-kvlt-dot-ee)
+#
+# This file is part of cdist.
+#
+# cdist 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.
+#
+# cdist 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 cdist. If not, see <http://www.gnu.org/licenses/>.
+#
+
+if grep -Eq \
+    "$( cat "$__object/parameter/pattern" )" \
+    "$__messages_in"
+then
+    cat "$__object/parameter/execute" \
+        | tee "$__messages_out"
+fi

cdist/conf/type/__check_messages/man.rst

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+cdist-type__check_messages(7)
+=============================
+
+NAME
+----
+cdist-type__check_messages - Check messages for pattern and execute command on match.
+
+
+DESCRIPTION
+-----------
+Check messages for pattern and execute command on match.
+
+This type is useful if you chain together multiple related types using
+dependencies and want to restart service if at least one type changes
+something.
+
+For more information about messages see `cdist messaging <cdist-messaging.html>`_.
+
+For more information about dependencies and execution order see
+`cdist manifest <cdist-manifest.html#dependencies>`_ documentation.
+
+
+REQUIRED PARAMETERS
+-------------------
+pattern
+   Extended regular expression pattern for search (passed to ``grep -E``).
+
+execute
+   Command to execute on pattern match.
+
+
+EXAMPLES
+--------
+
+.. code-block:: sh
+
+    __check_messages munin \
+        --pattern '^__(file|link|line)/etc/munin/' \
+        --execute 'service munin-node restart'
+
+
+AUTHORS
+-------
+Ander Punnar <ander-at-kvlt-dot-ee>
+
+
+COPYING
+-------
+Copyright \(C) 2019 Ander Punnar. 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.

cdist/conf/type/__check_messages/parameter/required

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+pattern
+execute