Retry backoff

cmd_retry_backoff¶

Retry a command with exponential backoff. Waits 1s, 2s, 4s, 8s … up to SHELLAC_RETRY_MAX_WAIT seconds between attempts. Default cap is 60 seconds.

Example¶

cmd_retry_backoff 5 curl -sf https://example.com

Arguments¶

• $1 (int): Maximum number of attempts (default: 5)
• ... (Command): and its arguments

Exit codes¶

• 0: Command succeeded within attempts; 1 All attempts failed; 2 Missing command

cmd_retry_constant¶

Retry a command with a constant wait interval until it succeeds.

Example¶

cmd_retry_constant 10 3 ping -c1 192.168.1.1

Arguments¶

• $1 (int): Maximum number of attempts (default: 5)
• $2 (int): Wait seconds between attempts (default: 5)
• ... (Command): and its arguments

Exit codes¶

• 0: Command succeeded; 1 All attempts failed; 2 Missing command

cmd_retry_until¶

Retry a command until it succeeds or a timeout is reached. Polls every $2 seconds (default: 5).

Example¶

cmd_retry_until 120 10 curl -sf http://localhost:8080/health

Arguments¶

• $1 (int): Timeout in seconds
• $2 (int): Poll interval in seconds (default: 5)
• ... (Command): and its arguments

Exit codes¶

• 0: Command succeeded; 1 Timeout reached; 2 Missing command