Try It Yourself - SyntaxStudy Editor

HTML / CSS / JS

#!/bin/bash
set -euo pipefail

# ---- Logging helper ----
LOG_FILE="/var/log/deploy.log"

log() {
    local level="$1"
    local message="$2"
    echo "[$(date '+%Y-%m-%d %H:%M:%S')] [$level] $message" | tee -a "$LOG_FILE"
}

# ---- Cleanup trap ----
TMPDIR=$(mktemp -d)

cleanup() {
    log "INFO" "Cleaning up temporary files in $TMPDIR"
    rm -rf "$TMPDIR"
}
trap cleanup EXIT
trap 'log "ERROR" "Script interrupted"; exit 1' INT TERM

# ---- Input validation function ----
validate_args() {
    if [[ $# -lt 2 ]]; then
        log "ERROR" "Usage: $0 <environment> <version>"
        exit 1
    fi
    local env="$1"
    if [[ ! "$env" =~ ^(staging|production)$ ]]; then
        log "ERROR" "Environment must be 'staging' or 'production'"
        exit 1
    fi
}

# ---- Retry function ----
retry() {
    local attempts="$1"
    shift
    local cmd=("$@")
    local i
    for (( i=1; i<=attempts; i++ )); do
        if "${cmd[@]}"; then
            return 0
        fi
        log "WARN" "Attempt $i/$attempts failed. Retrying..."
        sleep 2
    done
    log "ERROR" "Command failed after $attempts attempts: ${cmd[*]}"
    return 1
}

# ---- Main function ----
main() {
    validate_args "$@"
    local ENV="$1"
    local VERSION="$2"

log "INFO" "Starting deployment of version $VERSION to $ENV"
    retry 3 curl -sf "https://api.example.com/health"
    log "INFO" "Deployment complete"
}

main "$@"