feat: Add script for managing Packer builds

Added a Bash script to manage Packer builds with customizable options and validations. The script sets default values, parses arguments, validates templates, and executes builds based on provided parameters.

kvm_generic.sh

@@ -0,0 +1,166 @@
+#!/usr/bin/env bash
+
+# Define colors
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[0;33m'
+BLUE='\033[0;34m'
+NC='\033[0m' # No Color
+
+# Default values
+PACKER_LOG=0
+cloud="generic"
+cloud_init_path="extra/files/cloud-init/rhel/generic/cloud.cfg"
+default_version="almalinux-8.7"
+default_family="rhel"
+default_uefi="false"
+
+# Function to display usage
+usage() {
+    echo "Usage: $0 [-P <packer_log>] [-C <cloud>] [-F <family>] [-V <version>] [-U <uefi>]"
+    echo "  -P <packer_log>   Set PACKER_LOG (0 or 1, default: 0)"
+    echo "  -C <cloud>        Set cloud value (oci, generic, alicloud, default: generic)"
+    echo "  -F <family>       Set family (default: rhel)"
+    echo "  -V <version>      Set version (default: almalinux-8.7)"
+    echo "  -U <uefi>         UEFI support (true or false, default: false)"
+    exit 1
+}
+
+# Parse command-line arguments
+while getopts ":P:C:F:V:U:" opt; do
+    case ${opt} in
+        P )
+            PACKER_LOG=$OPTARG
+            if [ "$PACKER_LOG" -ne 0 ] && [ "$PACKER_LOG" -ne 1 ]; then
+                echo -e "${RED}Invalid value for PACKER_LOG. Please provide 0 or 1.${NC}"
+                usage
+            fi
+            ;;
+        C )
+            cloud=$OPTARG
+            if [[ ! "$cloud" =~ ^(oci|generic|alicloud)$ ]]; then
+                echo -e "${RED}Invalid cloud value. Please provide one of: oci, generic, alicloud.${NC}"
+                usage
+            fi
+            ;;
+        F )
+            family=$OPTARG
+            ;;
+        V )
+            version=$OPTARG
+            ;;
+        U )
+            uefi=$OPTARG
+            if [ "$uefi" != "true" ] && [ "$uefi" != "false" ]; then
+                echo -e "${RED}Invalid value for UEFI. Use 'true' or 'false'.${NC}"
+                usage
+            fi
+            ;;
+        \? )
+            usage
+            ;;
+    esac
+done
+
+# Use defaults if parameters are not provided
+family=${family:-$default_family}
+version=${version:-$default_version}
+uefi=${uefi:-$default_uefi}
+
+# Set cloud_init_path based on cloud value
+case $cloud in
+    oci)
+        cloud_init_path="extra/files/cloud-init/rhel/oci/cloud.cfg"
+        ;;
+    generic)
+        cloud_init_path="extra/files/cloud-init/rhel/generic/cloud.cfg"
+        ;;
+    alicloud)
+        cloud_init_path="extra/files/cloud-init/rhel/alicloud/cloud.cfg"
+        ;;
+    *)
+        echo -e "${RED}Invalid cloud value.${NC}"
+        usage
+        ;;
+esac
+
+# Export PACKER_LOG
+export PACKER_LOG
+
+# Define other variables
+output_dir="packer-${version}-${cloud}-x86_64-qemu"
+var_file="kvm/variables_kvm_${version}.pkvars.hcl"
+uefi_var_file="kvm/variables_kvm_${version}_uefi.pkvars.hcl"
+template="kvm/kvm_${family}.pkr.hcl"
+
+# Display variable values
+echo -e "${BLUE}--- Variable Values ---${NC}"
+echo -e "PACKER_LOG: ${YELLOW}$PACKER_LOG${NC}"
+echo -e "Cloud: ${YELLOW}$cloud${NC}"
+echo -e "Cloud Init Path: ${YELLOW}$cloud_init_path${NC}"
+echo -e "Version: ${YELLOW}$version${NC}"
+echo -e "Family: ${YELLOW}$family${NC}"
+echo -e "UEFI: ${YELLOW}$uefi${NC}"
+echo -e "Output Directory: ${YELLOW}$output_dir${NC}"
+echo -e "Var File: ${YELLOW}$var_file${NC}"
+echo -e "UEFI Var File: ${YELLOW}$uefi_var_file${NC}"
+echo -e "Template: ${YELLOW}$template${NC}"
+echo -e "${BLUE}-----------------------${NC}"
+
+# Start message
+echo -e "${YELLOW}Starting the Packer script...${NC}"
+
+# Check if output directory exists
+if [ -d "./$output_dir" ]; then
+    echo -e "${RED}$output_dir exists. Removing folder...${NC}"
+    rm -rf "./$output_dir/"
+else
+    echo -e "${GREEN}$output_dir does not exist. Proceeding...${NC}"
+fi
+
+# Validate packer template
+if [ "$uefi" == "true" ]; then
+    if [ -e "$uefi_var_file" ]; then
+        echo -e "${YELLOW}UEFI variables file '$uefi_var_file' found. Validating with Packer...${NC}"
+        packer validate --var-file="$var_file" --var-file="$uefi_var_file" -var "cloud_init_path=$cloud_init_path" -var="template=$output_dir" "$template"
+        rc=$?
+    else
+        echo -e "${RED}UEFI is enabled but the UEFI variables file '$uefi_var_file' not found. Exiting now.${NC}"
+        exit 1
+    fi
+else
+    echo -e "${YELLOW}UEFI not enabled. Validating with Packer...${NC}"
+    packer validate --var-file="$var_file" -var "cloud_init_path=$cloud_init_path" -var="template=$output_dir" "$template"
+    rc=$?
+fi
+
+if [ $rc -ne 0 ]; then
+    echo -e "${RED}Packer validate failed - exiting now.${NC}"
+    exit $rc
+else
+    echo -e "${GREEN}Packer template validation successful!${NC}"
+    if [ "$uefi" == "true" ] && [ -e "$uefi_var_file" ]; then
+        echo -e "${YELLOW}UEFI variables file found. Building with Packer...${NC}"
+        packer build --force --var-file="$var_file" --var-file="$uefi_var_file" -var "cloud_init_path=$cloud_init_path" -var="template=$output_dir" "$template"
+    else
+        echo -e "${YELLOW}No UEFI variables file found or UEFI not enabled. Building with Packer...${NC}"
+        packer build --force --var-file="$var_file" -var "cloud_init_path=$cloud_init_path" -var="template=$output_dir" "$template"
+    fi
+    rc=$?
+fi
+
+if [ $rc -ne 0 ]; then
+    echo -e "${RED}Packer build failed - exiting now.${NC}"
+    exit $rc
+else
+    echo -e "${GREEN}Packer build completed successfully!${NC}"
+fi
+
+# End time
+end_time=$(date +%s%N)
+time_diff_seconds=$(( (end_time - start_time) / 1000000000 ))
+hours=$(( time_diff_seconds / 3600 ))
+minutes=$(( (time_diff_seconds % 3600) / 60 ))
+seconds=$(( time_diff_seconds % 60 ))
+
+echo -e "${GREEN}Packer build took: ${hours} hours, ${minutes} minutes, and ${seconds} seconds.${NC}"