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fix: add retry policy to grpc calls. (#261)
Some error codes are not on the stream, eg. istio is sending some special ones, and we already used to implement the same logic in java to bypass this issue. Signed-off-by: Simon Schrottner <[email protected]>
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  • providers/openfeature-provider-flagd/src/openfeature/contrib/provider/flagd/resolvers

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‎providers/openfeature-provider-flagd/src/openfeature/contrib/provider/flagd/resolvers/grpc.py‎

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@@ -1,3 +1,4 @@
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import json
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import logging
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import threading
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import time
@@ -80,6 +81,44 @@ def _generate_channel(self, config: Config) -> grpc.Channel:
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("grpc.initial_reconnect_backoff_ms", config.retry_backoff_ms),
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("grpc.max_reconnect_backoff_ms", config.retry_backoff_max_ms),
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("grpc.min_reconnect_backoff_ms", config.deadline_ms),
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(
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"grpc.service_config",
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json.dumps(
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{
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"methodConfig": [
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{
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"name": [
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{"service": "flagd.sync.v1.FlagSyncService"},
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{"service": "flagd.evaluation.v1.Service"},
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],
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"retryPolicy": {
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"maxAttempts": 3,
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"initialBackoff": "1s",
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"maxBackoff": "5s",
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"backoffMultiplier": 2.0,
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"retryableStatusCodes": [
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"CANCELLED",
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"UNKNOWN",
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"INVALID_ARGUMENT",
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"NOT_FOUND",
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"ALREADY_EXISTS",
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"PERMISSION_DENIED",
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"RESOURCE_EXHAUSTED",
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"FAILED_PRECONDITION",
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"ABORTED",
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"OUT_OF_RANGE",
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"UNIMPLEMENTED",
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"INTERNAL",
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"UNAVAILABLE",
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"DATA_LOSS",
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"UNAUTHENTICATED",
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],
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},
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}
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]
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}
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),
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),
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]
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if config.tls:
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channel_args = {

‎providers/openfeature-provider-flagd/src/openfeature/contrib/provider/flagd/resolvers/process/connector/grpc_watcher.py‎

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@@ -62,6 +62,44 @@ def _generate_channel(self, config: Config) -> grpc.Channel:
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("grpc.initial_reconnect_backoff_ms", config.retry_backoff_ms),
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("grpc.max_reconnect_backoff_ms", config.retry_backoff_max_ms),
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("grpc.min_reconnect_backoff_ms", config.stream_deadline_ms),
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(
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"grpc.service_config",
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json.dumps(
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{
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"methodConfig": [
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{
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"name": [
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{"service": "flagd.sync.v1.FlagSyncService"},
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{"service": "flagd.evaluation.v1.Service"},
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],
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"retryPolicy": {
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"maxAttempts": 3,
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"initialBackoff": "1s",
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"maxBackoff": "5s",
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"backoffMultiplier": 2.0,
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"retryableStatusCodes": [
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"CANCELLED",
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"UNKNOWN",
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"INVALID_ARGUMENT",
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"NOT_FOUND",
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"ALREADY_EXISTS",
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"PERMISSION_DENIED",
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"RESOURCE_EXHAUSTED",
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"FAILED_PRECONDITION",
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"ABORTED",
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"OUT_OF_RANGE",
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"UNIMPLEMENTED",
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"INTERNAL",
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"UNAVAILABLE",
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"DATA_LOSS",
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"UNAUTHENTICATED",
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],
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},
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}
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]
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}
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),
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),
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]
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if config.default_authority is not None:
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options.append(("grpc.default_authority", config.default_authority))

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