Added Vagrant push tracker to build and deploy new JavaScript Tracker (closes snowplow#313)

Author: fblundun

.gitignore

@@ -28,3 +28,4 @@ aws.json
 
 # Vagrant
 .vagrant
+VERSION

Vagrantfile

@@ -16,4 +16,9 @@ Vagrant.configure("2") do |config|
     sh.path = "vagrant/up.bash"
   end
 
+  # Requires Vagrant 1.7.0+
+  config.push.define "push-tracker", strategy: "local-exec" do |push|
+    push.script = "vagrant/push/publish-tracker.bash"
+  end
+
 end

vagrant/push/publish-tracker.bash

@@ -0,0 +1,96 @@
+#!/bin/bash
+set -e
+
+# Similar to Perl die
+function die() {
+	echo "$@" 1>&2 ; exit 1;
+}
+
+# Check if our Vagrant box is running. Expects `vagrant status` to look like:
+#
+# > Current machine states:
+# >
+# > default                   poweroff (virtualbox)
+# >
+# > The VM is powered off. To restart the VM, simply run `vagrant up`
+#
+# Parameters:
+# 1. out_running (out parameter)
+function is_running {
+	[ "$#" -eq 1 ] || die "1 argument required, $# provided"
+	local __out_running=$1
+
+	set +e
+	vagrant status | sed -n 3p | grep -q "^default\s*running (virtualbox)$"
+	local retval=${?}
+	set -e
+	if [ ${retval} -eq "0" ] ; then
+		eval ${__out_running}=1
+	else
+		eval ${__out_running}=0
+	fi
+}
+
+# Get version, checking we are on the latest
+#
+# Parameters:
+# 1. out_version (out parameter)
+# 2. out_error (out parameter)
+function get_version {
+	[ "$#" -eq 2 ] || die "2 arguments required, $# provided"
+	local __out_version=$1
+	local __out_error=$2
+
+	# Extract the version from package.json using Node and save it in a file named "VERSION"
+	vagrant ssh -c "cd /vagrant && node -e \"var fs=require('fs');fs.readFile('./package.json', 'utf8', function(e,d){console.log(JSON.parse(d)['version'])});\" > VERSION" \
+	  || die "Failed to get extract version information from package.json"
+	file_version=`cat VERSION`
+	tag_version=`git describe --abbrev=0 --tags`
+	if [ ${file_version} != ${tag_version} ] ; then
+		eval ${__out_error}="'File version ${file_version} != tag version ${tag_version}'"
+	else
+		eval ${__out_version}=${file_version}
+	fi
+}
+
+# Go to parent-parent dir of this script
+function cd_root() {
+	source="${BASH_SOURCE[0]}"
+	while [ -h "${source}" ] ; do source="$(readlink "${source}")"; done
+	dir="$( cd -P "$( dirname "${source}" )/../.." && pwd )"
+	cd ${dir}
+}
+
+echo "Your AWS information will be saved in a temporary aws.json file, overwriting any existing aws.json file."
+read -p "Do you want to publish the Snowplow JavaScript Tracker? [Y/N]" -n 1 -r
+echo
+if [[ $REPLY =~ ^[Yy]$ ]]
+then
+	cd_root
+
+	# Precondition for running
+	running=0 && is_running "running"
+	[ ${running} -eq 1 ] || die "Vagrant guest must be running to push"
+
+	# Git tag must match version in package.json
+	version="" && error="" && get_version "version" "error"
+	[ "${error}" ] && die "Versions don't match: ${error}. Are you trying to publish an old version, or maybe on the wrong branch?"
+
+	touch aws.json
+
+	echo "Please enter your AWS access key"
+	read -e -s key
+	echo "Please enter your AWS secret key"
+	read -e -s secret
+	echo "Please enter your AWS bucket"
+	read -e -s bucket
+	echo "Please enter your AWS distribution"
+	read -e -s distribution
+
+	echo "{\"key\":\"$key\",\"secret\":\"$secret\",\"bucket\":\"$bucket\",\"distribution\":\"$distribution\"}" > aws.json
+
+	vagrant ssh -c "cd /vagrant && sudo npm install && grunt publish"
+
+	rm aws.json
+fi
+exit 0