From b85f8c1b914a09b6001d4c1b5c7d07ef17ac766f Mon Sep 17 00:00:00 2001
From: Micah <micah@leap.se>
Date: Tue, 12 Jul 2016 16:45:27 -0400
Subject: git subrepo clone https://leap.se/git/puppet_concat
 puppet/modules/concat

subrepo:
  subdir:   "puppet/modules/concat"
  merged:   "abce128"
upstream:
  origin:   "https://leap.se/git/puppet_concat"
  branch:   "master"
  commit:   "abce128"
git-subrepo:
  version:  "0.3.0"
  origin:   "https://github.com/ingydotnet/git-subrepo"
  commit:   "1e79595"

Change-Id: Ic28e31bdc5b32fd6c55636bc35d9ca2967daf997
---
 puppet/modules/concat/files/concatfragments.sh | 129 +++++++++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100755 puppet/modules/concat/files/concatfragments.sh

(limited to 'puppet/modules/concat/files/concatfragments.sh')

diff --git a/puppet/modules/concat/files/concatfragments.sh b/puppet/modules/concat/files/concatfragments.sh
new file mode 100755
index 00000000..c9397975
--- /dev/null
+++ b/puppet/modules/concat/files/concatfragments.sh
@@ -0,0 +1,129 @@
+#!/bin/sh
+
+# Script to concat files to a config file.
+#
+# Given a directory like this:
+# /path/to/conf.d
+# |-- fragments
+# |   |-- 00_named.conf
+# |   |-- 10_domain.net
+# |   `-- zz_footer
+#
+# The script supports a test option that will build the concat file to a temp location and 
+# use /usr/bin/cmp to verify if it should be run or not.  This would result in the concat happening
+# twice on each run but gives you the option to have an unless option in your execs to inhibit rebuilds.
+# 
+# Without the test option and the unless combo your services that depend on the final file would end up 
+# restarting on each run, or in other manifest models some changes might get missed.
+#
+# OPTIONS:
+#  -o	The file to create from the sources
+#  -d	The directory where the fragments are kept
+#  -t	Test to find out if a build is needed, basically concats the files to a temp
+#       location and compare with what's in the final location, return codes are designed
+#       for use with unless on an exec resource
+#  -w   Add a shell style comment at the top of the created file to warn users that it 
+#       is generated by puppet
+#  -f   Enables the creation of empty output files when no fragments are found
+#  -n	Sort the output numerically rather than the default alpha sort
+#
+# the command: 
+#
+#   concatfragments.sh -o /path/to/conffile.cfg -d /path/to/conf.d
+#
+# creates /path/to/conf.d/fragments.concat and copies the resulting 
+# file to /path/to/conffile.cfg.  The files will be sorted alphabetically
+# pass the -n switch to sort numerically.
+# 
+# The script does error checking on the various dirs and files to make
+# sure things don't fail.
+
+OUTFILE=""
+WORKDIR=""
+TEST=""
+FORCE=""
+WARN=""
+SORTARG=""
+
+PATH=/sbin:/usr/sbin:/bin:/usr/bin
+
+## Well, if there's ever a bad way to do things, Nexenta has it.
+## http://nexenta.org/projects/site/wiki/Personalities
+unset SUN_PERSONALITY
+
+while getopts "o:s:d:tnw:f" options; do
+	case $options in
+		o ) OUTFILE=$OPTARG;;
+		d ) WORKDIR=$OPTARG;;
+		n ) SORTARG="-n";;
+		w ) WARNMSG="$OPTARG";;
+		f ) FORCE="true";;
+		t ) TEST="true";;
+		* ) echo "Specify output file with -o and fragments directory with -d"
+		    exit 1;;
+	esac
+done
+
+# do we have -o?
+if [ x${OUTFILE} = "x" ]; then
+	echo "Please specify an output file with -o"
+	exit 1
+fi
+
+# do we have -d?
+if [ x${WORKDIR} = "x" ]; then
+	echo "Please fragments directory with -d"
+	exit 1
+fi
+
+# can we write to -o?
+if [ -f ${OUTFILE} ]; then
+	if [ ! -w ${OUTFILE} ]; then
+		echo "Cannot write to ${OUTFILE}"
+		exit 1
+	fi
+else
+	if [ ! -w `dirname ${OUTFILE}` ]; then
+		echo "Cannot write to `dirname ${OUTFILE}` to create ${OUTFILE}"
+		exit 1
+	fi
+fi
+
+# do we have a fragments subdir inside the work dir?
+if [ ! -d "${WORKDIR}/fragments" ]  && [ ! -x "${WORKDIR}/fragments" ]; then
+	echo "Cannot access the fragments directory"
+	exit 1
+fi
+
+# are there actually any fragments?
+if [ ! "$(ls -A ${WORKDIR}/fragments)" ]; then
+	if [ x${FORCE} = "x" ]; then
+		echo "The fragments directory is empty, cowardly refusing to make empty config files"
+		exit 1
+	fi
+fi
+
+cd ${WORKDIR}
+
+if [ x${WARNMSG} = "x" ]; then
+	: > "fragments.concat"
+else
+	printf '%s\n' "$WARNMSG" > "fragments.concat"
+fi
+
+# find all the files in the fragments directory, sort them numerically and concat to fragments.concat in the working dir
+find fragments/ -type f -follow | sort ${SORTARG} | while read fragfile; do
+	cat "$fragfile" >> "fragments.concat"
+done
+
+if [ x${TEST} = "x" ]; then
+	# This is a real run, copy the file to outfile
+	cp fragments.concat ${OUTFILE}
+	RETVAL=$?
+else
+	# Just compare the result to outfile to help the exec decide
+	cmp ${OUTFILE} fragments.concat
+	RETVAL=$?
+fi
+
+exit $RETVAL
-- 
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