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Add limited constant retry strategy. #43

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Add limited constant retry strategy. #43

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1595aa1
Add limited constant retry strategy.
MichaelGrupp Sep 17, 2018
9144f7f
Merge branch 'master' into limited-retry
Sep 17, 2018
54d63c9
Merge branch 'master' into limited-retry
MichaelGrupp Sep 25, 2018
f7ec661
Ran clang-format.
gaschler Jul 23, 2019
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25 changes: 24 additions & 1 deletion async_grpc/retry.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,15 @@ RetryIndicator CreateLimitedRetryIndicator(int max_attempts) {
};
}

RetryIndicator CreateLimitedRetryIndicator(
int max_attempts, const std::set<::grpc::StatusCode>& unrecoverable_codes) {
return [max_attempts, unrecoverable_codes](int failed_attempts,
const ::grpc::Status& status) {
return (failed_attempts < max_attempts) &&
!unrecoverable_codes.count(status.error_code());
};
}

RetryIndicator CreateUnlimitedRetryIndicator() {
return [](int failed_attempts, const ::grpc::Status &status) { return true; };
}
Expand All @@ -48,7 +57,7 @@ RetryIndicator CreateUnlimitedRetryIndicator(
const std::set<::grpc::StatusCode> &unrecoverable_codes) {
return
[unrecoverable_codes](int failed_attempts, const ::grpc::Status &status) {
return unrecoverable_codes.count(status.error_code()) <= 0;
return !unrecoverable_codes.count(status.error_code());
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Changed this because it didn't make sense, count() returns either 1 or 0 for a set.

We can change it to count == 0 if you prefer that style.

};
}

Expand Down Expand Up @@ -80,6 +89,20 @@ RetryStrategy CreateUnlimitedConstantDelayStrategy(Duration delay) {
CreateConstantDelayCalculator(delay));
}

RetryStrategy CreateLimitedConstantDelayStrategy(Duration delay,
int max_attempts) {
return CreateRetryStrategy(CreateLimitedRetryIndicator(max_attempts),
CreateConstantDelayCalculator(delay));
}

RetryStrategy CreateLimitedConstantDelayStrategy(
Duration delay, int max_attempts,
const std::set<::grpc::StatusCode>& unrecoverable_codes) {
return CreateRetryStrategy(
CreateLimitedRetryIndicator(max_attempts, unrecoverable_codes),
CreateConstantDelayCalculator(delay));
}

RetryStrategy CreateUnlimitedConstantDelayStrategy(
Duration delay, const std::set<::grpc::StatusCode> &unrecoverable_codes) {
return CreateRetryStrategy(CreateUnlimitedRetryIndicator(unrecoverable_codes),
Expand Down
7 changes: 7 additions & 0 deletions async_grpc/retry.h
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Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,8 @@ RetryStrategy CreateRetryStrategy(RetryIndicator retry_indicator,
RetryDelayCalculator retry_delay_calculator);

RetryIndicator CreateLimitedRetryIndicator(int max_attempts);
RetryIndicator CreateLimitedRetryIndicator(
int max_attempts, const std::set<::grpc::StatusCode>& unrecoverable_codes);
RetryIndicator CreateUnlimitedRetryIndicator();
RetryIndicator CreateUnlimitedRetryIndicator(
const std::set<::grpc::StatusCode> &unrecoverable_codes);
Expand All @@ -47,6 +49,11 @@ RetryDelayCalculator CreateConstantDelayCalculator(Duration delay);
RetryStrategy CreateLimitedBackoffStrategy(Duration min_delay,
float backoff_factor,
int max_attempts);
RetryStrategy CreateLimitedConstantDelayStrategy(Duration delay,
int max_attempts);
RetryStrategy CreateLimitedConstantDelayStrategy(
Duration delay, int max_attempts,
const std::set<::grpc::StatusCode>& unrecoverable_codes);
RetryStrategy CreateUnlimitedConstantDelayStrategy(Duration delay);
RetryStrategy CreateUnlimitedConstantDelayStrategy(
Duration delay, const std::set<::grpc::StatusCode> &unrecoverable_codes);
Expand Down