keep_alive_cron.sh

#!/bin/bash
# Keep-alive script for Tranception Hugging Face Space
# Add to crontab: */5 * * * * /path/to/keep_alive_cron.sh

SPACE_URL="https://huggingface.co/spaces/MoraxCheng/Transeption_iGEM_BASISCHINA_2025"
LOG_FILE="/var/log/tranception_keep_alive.log"

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

# Ping the Space
response=$(curl -s -o /dev/null -w "%{http_code}" "$SPACE_URL" --max-time 30)

if [ "$response" = "200" ]; then
    log_message "SUCCESS: Space is alive (HTTP $response)"
else
    log_message "WARNING: Space returned HTTP $response"
    
    # Try to wake it up with a simple request
    curl -s -X POST "$SPACE_URL/api/predict" \
        -H "Content-Type: application/json" \
        -d '{"fn_index": 0, "data": ["MSKGEELFT", 1, 5, "Small", false, 10]}' \
        --max-time 60 > /dev/null
    
    log_message "Sent wake-up request"
fi

# Keep log file size under control (max 1MB)
if [ -f "$LOG_FILE" ] && [ $(stat -f%z "$LOG_FILE" 2>/dev/null || stat -c%s "$LOG_FILE" 2>/dev/null) -gt 1048576 ]; then
    tail -n 1000 "$LOG_FILE" > "$LOG_FILE.tmp"
    mv "$LOG_FILE.tmp" "$LOG_FILE"
    log_message "Log file rotated"
fi