From 2dd6caaa9b9b40b6f7ce690753d669ff918b1981 Mon Sep 17 00:00:00 2001
From: Tom Ryder <tom@sanctum.geek.nz>
Date: Wed, 26 Nov 2014 17:56:23 +1300
Subject: First commit of project

---
 LICENSE         | 22 ++++++++++++++++
 README.markdown | 18 +++++++++++++
 nscaw           | 79 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 119 insertions(+)
 create mode 100644 LICENSE
 create mode 100644 README.markdown
 create mode 100755 nscaw

diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..d77e562
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Tom Ryder
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
diff --git a/README.markdown b/README.markdown
new file mode 100644
index 0000000..17dad48
--- /dev/null
+++ b/README.markdown
@@ -0,0 +1,18 @@
+nscaw
+=====
+
+Command wrapper that sends an appropriate passive check to an NSCA server using
+`send_nsca`, depending on the command's outcome.
+
+Make sure `send_nsca` is in `$PATH` and that `NSCAW_SERVER` is set.
+
+    $ nscaw IMPORTANT_JOB -- important-job -o options args ...
+
+License
+-------
+
+Copyright (c) [Tom Ryder][1]. Distributed under [MIT License][2].
+
+[1]: https://sanctum.geek.nz/
+[2]: http://opensource.org/licenses/MIT
+
diff --git a/nscaw b/nscaw
new file mode 100755
index 0000000..dc35637
--- /dev/null
+++ b/nscaw
@@ -0,0 +1,79 @@
+#!/usr/bin/env bash
+
+#
+# Command wrapper that sends an appropriate passive check to an NSCA server
+# using send_nsca, depending on the command's outcome.
+#
+# Make sure send_nsca is in $PATH and that NSCAW_SERVER is set.
+#
+#   $ nscaw IMPORTANT_JOB -- important-job -o options args ...
+#
+# Author: Tom Ryder <tom@sanctum.geek.nz>
+# License: MIT
+#
+
+# Name ourself
+self=nscaw
+
+# If there's a defaults file with environment variables for us, source it
+if [[ -r /etc/default/"$self" ]] ; then
+    source /etc/default/"$self"
+fi
+
+# Define a function to explain how to use this script
+usage() {
+    printf 'Usage: %s SERVICE -- COMMAND...\n' \
+        "$self"
+}
+
+# Respond to requests for help with usage (exit success)
+case $1 in
+    -h|--help)
+        usage
+        exit 0
+        ;;
+esac
+
+# Check that at least three arguments are present and in the correct form
+if (( $# < 3 )) || [[ $2 != -- ]] ; then
+    usage >&2
+    exit 1
+fi
+
+# Pull the service from the first argument and shift the first two arguments
+# off the arguments array; the rest of the array should be the command to run
+service=$1
+shift 2
+
+# Figure out our hostname; most of the time `hostname -s` will be fine, but
+# it can be overridden with the value of NSCAW_HOSTNAME if defined
+hostname=${NSCAW_HOSTNAME:-$(hostname -s)}
+
+# Attempt to run command
+"$@"
+
+# Decide return code and message based on command exit value
+case $? in
+    0)
+        code=0 # OK
+        message=$(printf '%s: Command "%s" ran successfully' \
+            "$self" "$*")
+        ;;
+    127)
+        code=3 # UNKNOWN
+        message=$(printf '%s: Command "%s" could not be found' \
+            "$self" "$*")
+        ;;
+    *)
+        code=2 # CRITICAL
+        message=$(printf '%s: Command "%s" ran with errors' \
+            "$self" "$*")
+        ;;
+esac
+
+# Format the passive check and pipe it into send_nsca; note that we ignore the
+# stdout of send_nsca as it's just a diagnostic message
+printf '%s\t%s\t%u\t%s\n' \
+    "$hostname" "$service" "$code" "$message" |
+        send_nsca -H "${NSCAW_SERVER:?}" >/dev/null
+
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