Define a retry policy for a graph node

Passed to add_node() via the retry argument. When a node function throws an error, the runner waits wait_seconds and retries up to max_attempts times before re-throwing.

Usage

retry_policy(max_attempts = 3L, wait_seconds = 1L, backoff = 1)

Arguments

max_attempts

Positive integer. Total number of attempts (including the first). Must be >= 2.

wait_seconds

Non-negative number. Seconds to wait between attempts. Each subsequent wait is multiplied by backoff (default 1 = no backoff).

backoff

Positive number. Multiplier applied to wait_seconds after each failed attempt. Use 2 for exponential backoff.

Value

An S3 object of class retry_policy.

Examples

rp <- retry_policy(max_attempts = 3L, wait_seconds = 1L, backoff = 2)