Connection Retry Policy

Overview

A IO Function can at any point throw an exception, the retry policy determines how
on Exception should the function be called, if any or if the exception should be
re thrown

Default Retry Policy

A tcp-driver.routing.retry.DefaultRetryPolicy record is provided that implements
tcp-driver.routing.retry.IRetry protocol, and calls the IO Functions if
and exception is thrown, doing so N times, where N is provided as part of the creation
of DefaultRetryPolicy.

Usage

(require '[tcp-driver.routing.retry :as retry])
 
(let [rpolicy (retry/retry-policy 3)
                          f (fn [] (prn "try-function and throw ex") (throw (Exception. "test")))]
                      (try
                        (retry/with-retry rpolicy f)
                        (catch Exception e
                          (prn (= (get (ex-data e) :retries) 3)))))