deploy.sh

#!/bin/bash

# basics
# https://docs.microsoft.com/en-us/azure/azure-resource-manager/resource-group-authoring-templates

# apiversion
# https://www.danielstechblog.info/using-the-latest-api-version-in-your-azure-resource-manager-templates/
# https://github.com/Azure/azure-rest-api-specs

# tags
# https://docs.microsoft.com/en-us/azure/azure-resource-manager/resource-group-using-tags
# https://docs.microsoft.com/en-us/azure/azure-resource-manager/resource-manager-template-tags

# link templates
# https://docs.microsoft.com/en-us/azure/azure-resource-manager/resource-group-linked-templates
# https://blogs.endjin.com/2016/12/advanced-azure-resource-manager-template-patterns-t-shirt-sizing-and-optional-resources/
# http://marcvaneijk.com/2016/03/14/nested.html
# https://blog.kloud.com.au/2016/04/16/break-down-your-templates-with-linked-templates-part-1/
# https://blog.kloud.com.au/2016/04/30/break-down-your-templates-with-linked-templates-part-2/

set -euo pipefail
IFS=$'\n\t'

# -e: immediately exit if any command has a non-zero exit status
# -o: prevents errors in a pipeline from being masked
# IFS new value is less likely to cause confusing bugs when looping arrays or arguments (e.g. $@)

usage() { echo "Usage: $0 -i <subscriptionId> -g <resourceGroupName> -n <deploymentName> -l <resourceGroupLocation>" 1>&2; exit 1; }

declare subscriptionId=""
declare resourceGroupName=""
declare deploymentName=""
declare resourceGroupLocation=""

# Initialize parameters specified from command line
while getopts ":i:g:n:l:" arg; do
	case "${arg}" in
		i)
			subscriptionId=${OPTARG}
			;;
		g)
			resourceGroupName=${OPTARG}
			;;
		n)
			deploymentName=${OPTARG}
			;;
		l)
			resourceGroupLocation=${OPTARG}
			;;
		esac
done
shift $((OPTIND-1))

#Prompt for parameters is some required parameters are missing
if [[ -z "$subscriptionId" ]]; then
	echo "Subscription Id:"
	read subscriptionId
	[[ "${subscriptionId:?}" ]]
fi

if [[ -z "$resourceGroupName" ]]; then
	echo "ResourceGroupName:"
	read resourceGroupName
	[[ "${resourceGroupName:?}" ]]
fi

if [[ -z "$deploymentName" ]]; then
	echo "DeploymentName:"
	read deploymentName
fi

if [[ -z "$resourceGroupLocation" ]]; then
	echo "Enter a location below to create a new resource group else skip this"
	echo "ResourceGroupLocation:"
	read resourceGroupLocation
fi

#templateFile Path - template file to be used
templateFilePath="template.json"

if [ ! -f "$templateFilePath" ]; then
	echo "$templateFilePath not found"
	exit 1
fi

#parameter file path
parametersFilePath="parameters.json"

if [ ! -f "$parametersFilePath" ]; then 
	echo "$parametersFilePath not found"
	exit 1
fi

if [ -z "$subscriptionId" ] || [ -z "$resourceGroupName" ] || [ -z "$deploymentName" ]; then
	echo "Either one of subscriptionId, resourceGroupName, deploymentName is empty"
	usage
fi

#login to azure using your credentials
azure account show 1> /dev/null

if [ $? != 0 ]; then
	azure login
fi

#set the default subscription id
azure account set --subscription $subscriptionId

set +e

#Check for existing RG
group_exists=$(azure group exists --name $resourceGroupName)

if [[ $group_exists == "false"  ]]; then
	echo "Resource group with name" $resourceGroupName "could not be found. Creating new resource group.."
	set -e
	(
		set -x
		azure group create --name $resourceGroupName --location $resourceGroupLocation 1> /dev/null
	)
	else
	echo "Using existing resource group..."
fi

#Start deployment
echo "Starting deployment..."
(
	set -x
	azure group deployment create --name $deploymentName --resource-group $resourceGroupName --template-file $templateFilePath --parameters @$parametersFilePath --verbose --debug
)

if [ $?  == 0 ]; 
 then
	echo "Template has been successfully deployed"
fi