test

#!/bin/bash

# Script to update SONIC configuration

# Usage: ./update_sonic_config.sh

# Exit on any error

set -e

# Configuration - no trailing slashes

target_script_dir="/srv/tftp/sonic"

source_dir="./bin/scripts"

tftp_dir="/tmp/tftp"

new_bin_file="new.bin"

link_name="one.bin"

config_file="default_config_db.json"

config_backup="${config_file}.bak"

source_config_file="config_db.json"

# Function: precheck

precheck() {

    echo "=== Running precheck ==="

    

    # Check if default_config_db.json file exists

    if [ -f "${target_script_dir}/${config_file}" ]; then

        echo "Found ${target_script_dir}/${config_file}"

    else

        echo "ERROR: ${target_script_dir}/${config_file} not found!"

        exit 1

    fi

    

    echo "Precheck completed successfully"

    echo ""

}

# Function: main

main() {

    echo "=== Running main operations ==="

    

    # Backup the default_config_db.json file

    echo "Creating backup of ${config_file}..."

    mv "${target_script_dir}/${config_file}" "${target_script_dir}/${config_backup}"

    echo "Backup created: ${config_backup}"

    

    # Copy files from ./bin/scripts/ to target directory

    echo "Copying files from ${source_dir}/ to ${target_script_dir}/..."

    if [ -d "${source_dir}" ]; then

        cp -v "${source_dir}"/* "${target_script_dir}/"

        echo "Files copied successfully"

    else

        echo "ERROR: Source directory ${source_dir} not found!"

        exit 1

    fi

    

    # Rename config_db.json to default_config_db.json

    echo "Renaming ${source_config_file} to ${config_file}..."

    if [ -f "${target_script_dir}/${source_config_file}" ]; then

        mv "${target_script_dir}/${source_config_file}" "${target_script_dir}/${config_file}"

        echo "Rename completed"

    else

        echo "WARNING: ${source_config_file} not found in target directory"

    fi

    

    # Create symbolic link

    echo "Creating symbolic link in ${tftp_dir}/..."

    # Ensure tftp directory exists

    mkdir -p "${tftp_dir}"

    

    # Change to tftp directory and create symlink

    cd "${tftp_dir}"

    ln -sf "sonic/${new_bin_file}" "${link_name}"

    echo "Symbolic link created: ${tftp_dir}/${link_name} -> sonic/${new_bin_file}"

    

    # Return to original directory

    cd - > /dev/null

    

    echo "Main operations completed successfully"

    echo ""

}

# Function: postcheck

postcheck() {

    echo "=== Running postcheck ==="

    

    # Check if symbolic link is created properly

    echo "Checking symbolic link: ${tftp_dir}/${link_name}"

    if [ -L "${tftp_dir}/${link_name}" ]; then

        # Get the target of the symlink

        link_target=$(readlink "${tftp_dir}/${link_name}")

        expected_target="sonic/${new_bin_file}"

        

        if [ "${link_target}" = "${expected_target}" ]; then

            echo "Symbolic link is correct: ${link_name} -> ${link_target}"

        else

            echo "ERROR: Symbolic link target is incorrect!"

            echo "  Expected: ${expected_target}"

            echo "  Actual: ${link_target}"

            exit 1

        fi

    else

        echo "ERROR: Symbolic link ${tftp_dir}/${link_name} not found or is not a symlink!"

        exit 1

    fi

    

    # Check if default_config_db.json file is present

    echo "Checking for ${target_script_dir}/${config_file}..."

    if [ -f "${target_script_dir}/${config_file}" ]; then

        echo "Found ${target_script_dir}/${config_file}"

        echo "File details:"

        ls -la "${target_script_dir}/${config_file}"

    else

        echo "ERROR: ${target_script_dir}/${config_file} not found!"

        exit 1

    fi

    

    echo "Postcheck completed successfully"

    echo ""

}

# Main execution

main_execution() {

    echo "========================================="

    echo "SONIC Configuration Update Script"

    echo "========================================="

    echo ""

    

    # Run functions in order

    precheck

    main

    postcheck

    

    echo "========================================="

    echo "All operations completed successfully!"

    echo "========================================="

}

# Run the main execution

main_execution