create_image_definition.sh

#!/usr/bin/env bash

# This script sets up Azure Shared Image Gallery (SIG) image definition and builds an image using Packer.
# It checks for a variables file, extracts necessary parameters, constructs an Azure CLI command for image definition creation,
# executes the command, waits for creation completion,
# and finally uses Packer to build the image based on the specified variables.

set -euo pipefail

# Required when running the script on Windows
alias az=az.cmd || true

# Specify the path to the variables file
variables_file="variables.pkrvars.hcl"

# Check if the file exists
if ! [ -f "$variables_file" ]; then
  echo "The variables file $variables_file does not exist."
  exit 1
fi

# Extracts required variables from the variables_file
gallery_subscription_id=$(grep 'gallery_subscription_id' "$variables_file" | cut -d '"' -f 2)
echo "Subscription ID: $gallery_subscription_id"

gallery_image_definition=$(grep 'gallery_image_definition' "$variables_file" | cut -d '"' -f 2)
echo "Image definition name: $gallery_image_definition"

graphdb_version=$(grep 'graphdb_version' "$variables_file" | cut -d '"' -f 2)
echo "GraphDB version: $graphdb_version"

gallery_resource_group=$(grep 'gallery_resource_group' "$variables_file" | cut -d '"' -f 2)
echo "Resource group: $gallery_resource_group"

gallery_name=$(grep 'gallery_name' "$variables_file" | cut -d '"' -f 2)
echo "Gallery: $gallery_name"

# Checks if any of the required variables is empty
if [ -z "$gallery_image_definition" ] || [ -z "$graphdb_version" ] || [ -z "$gallery_resource_group" ] || [ -z "$gallery_name" ] || [ -z "$gallery_subscription_id" ]; then
  echo "One or more required variables are not defined in $variables_file."
  exit 1
fi

# Constructs the az sig image-definition create command
az_command="az sig image-definition create \
     --subscription \"$gallery_subscription_id\" \
     --resource-group \"$gallery_resource_group\" \
     --gallery-name \"$gallery_name\" \
     --gallery-image-definition \"$gallery_image_definition\" \
     --publisher Ontotext \
     --offer GraphDB \
     --sku \"$graphdb_version\" \
     --os-type Linux \
     --hyper-v-generation v2 \
     --minimum-cpu-core 4 \
     --maximum-cpu-core 64 \
     --minimum-memory 4 \
     --maximum-memory 128 "

echo "Extracted variables and constructed Azure CLI command:"
echo "$az_command"

echo "Creating SIG image definition"
eval "$az_command"

echo "Waiting for the SIG image definition creation to complete"
az sig image-definition wait \
       --subscription "$gallery_subscription_id" \
       --resource-group "$gallery_resource_group" \
       --gallery-name "$gallery_name" \
       --gallery-image-definition "$gallery_image_definition" \
       --created
echo "SUCCESS: SIG image definition created"