Support negative retries value

CHANGES

@@ -1,4 +1,5 @@
 
+ * Allow negative `retries` for `Retry` class to retry forever
  * Add `items` parameter to `hset` signature
  * Create codeql-analysis.yml (#1988). Thanks @chayim
  * Add limited support for Lua scripting with RedisCluster

redis/asyncio/retry.py

@@ -27,6 +27,7 @@ def __init__(
  """
  Initialize a `Retry` object with a `Backoff` object
  that retries a maximum of `retries` times.
+ `retries` can be negative to retry forever.
  You can specify the types of supported errors which trigger
  a retry with the `supported_errors` parameter.
  """
@@ -51,7 +52,7 @@ async def call_with_retry(
  except self._supported_errors as error:
  failures += 1
  await fail(error)
- if failures > self._retries:
+ if self._retries >= 0 and failures > self._retries:
  raise error
  backoff = self._backoff.compute(failures)
  if backoff > 0:

redis/retry.py

@@ -16,6 +16,7 @@ def __init__(
  """
  Initialize a `Retry` object with a `Backoff` object
  that retries a maximum of `retries` times.
+ `retries` can be negative to retry forever.
  You can specify the types of supported errors which trigger
  a retry with the `supported_errors` parameter.
  """
@@ -46,7 +47,7 @@ def call_with_retry(self, do, fail):
  except self._supported_errors as error:
  failures += 1
  fail(error)
- if failures > self._retries:
+ if self._retries >= 0 and failures > self._retries:
  raise error
  backoff = self._backoff.compute(failures)
  if backoff > 0: