poor-mans-gitops.sh

#!/usr/bin/env bash

set -euo pipefail

# Set the path to your local repository
readonly REPO_PATH="/path/to/your/local/repository"

# Set the log file path
readonly LOG_FILE="/path/to/your/logfile.log"

# Function to log messages
log_message() {
    echo "$(date '+%Y-%m-%d %H:%M:%S') - $1" >> "$LOG_FILE"
}

# Change to the repository directory
cd "$REPO_PATH" || { log_message "Failed to change to repository directory"; exit 1; }

# Perform git pull
log_message "Performing git pull"
if ! git pull >> "$LOG_FILE" 2>&1; then
    log_message "Git pull failed"
    exit 1
fi

# Get list of changed files
mapfile -t changed_files < <(git diff --name-only HEAD@{1} HEAD)

# Get unique first-level directories of changed files
mapfile -t changed_dirs < <(printf '%s\n' "${changed_files[@]}" | cut -d'/' -f1 | sort -u)

# Iterate over changed directories
for dir in "${changed_dirs[@]}"; do
    if [[ -d "$dir" && (-f "$dir/compose.yaml" || -f "$dir/compose.yml") ]]; then
        log_message "Processing directory: $dir"
        
        # Change to the subdirectory
        if ! cd "$dir"; then
            log_message "Failed to change to directory: $dir"
            continue
        fi
        
        # Run docker compose pull
        log_message "Running docker compose pull in $dir"
        if ! docker compose pull >> "$LOG_FILE" 2>&1; then
            log_message "Docker compose pull failed in $dir"
        fi
        
        # Run docker compose up
        log_message "Running docker compose up in $dir"
        if ! docker compose up -d --remove-orphans --force-recreate >> "$LOG_FILE" 2>&1; then
            log_message "Docker compose up failed in $dir"
        fi
        
        # Change back to the repository root
        if ! cd "$REPO_PATH"; then
            log_message "Failed to change back to repository root"
            exit 1
        fi
    else
        log_message "Skipping directory $dir (no compose file or not a directory)"
    fi
done

log_message "Script execution completed"