Examples with RetryBackOff io.envoyproxy.envoy.config.route.v3.RetryPolicy.RetryBackOff used on opensource projects

Example 1 with RetryBackOff

use of io.envoyproxy.envoy.config.route.v3.RetryPolicy.RetryBackOff in project grpc-java by grpc.

the class ClientXdsClient method parseRetryPolicy.

// Return null if we ignore the given policy.
@Nullable
private static StructOrError<RetryPolicy> parseRetryPolicy(io.envoyproxy.envoy.config.route.v3.RetryPolicy retryPolicyProto) {
    int maxAttempts = 2;
    if (retryPolicyProto.hasNumRetries()) {
        maxAttempts = retryPolicyProto.getNumRetries().getValue() + 1;
    }
    Duration initialBackoff = Durations.fromMillis(25);
    Duration maxBackoff = Durations.fromMillis(250);
    if (retryPolicyProto.hasRetryBackOff()) {
        RetryBackOff retryBackOff = retryPolicyProto.getRetryBackOff();
        if (!retryBackOff.hasBaseInterval()) {
            return StructOrError.fromError("No base_interval specified in retry_backoff");
        }
        Duration originalInitialBackoff = initialBackoff = retryBackOff.getBaseInterval();
        if (Durations.compare(initialBackoff, Durations.ZERO) <= 0) {
            return StructOrError.fromError("base_interval in retry_backoff must be positive");
        }
        if (Durations.compare(initialBackoff, Durations.fromMillis(1)) < 0) {
            initialBackoff = Durations.fromMillis(1);
        }
        if (retryBackOff.hasMaxInterval()) {
            maxBackoff = retryPolicyProto.getRetryBackOff().getMaxInterval();
            if (Durations.compare(maxBackoff, originalInitialBackoff) < 0) {
                return StructOrError.fromError("max_interval in retry_backoff cannot be less than base_interval");
            }
            if (Durations.compare(maxBackoff, Durations.fromMillis(1)) < 0) {
                maxBackoff = Durations.fromMillis(1);
            }
        } else {
            maxBackoff = Durations.fromNanos(Durations.toNanos(initialBackoff) * 10);
        }
    }
    Iterable<String> retryOns = Splitter.on(',').omitEmptyStrings().trimResults().split(retryPolicyProto.getRetryOn());
    ImmutableList.Builder<Code> retryableStatusCodesBuilder = ImmutableList.builder();
    for (String retryOn : retryOns) {
        Code code;
        try {
            code = Code.valueOf(retryOn.toUpperCase(Locale.US).replace('-', '_'));
        } catch (IllegalArgumentException e) {
            // unsupported value, such as "5xx"
            continue;
        }
        if (!SUPPORTED_RETRYABLE_CODES.contains(code)) {
            // unsupported value
            continue;
        }
        retryableStatusCodesBuilder.add(code);
    }
    List<Code> retryableStatusCodes = retryableStatusCodesBuilder.build();
    return StructOrError.fromStruct(RetryPolicy.create(maxAttempts, retryableStatusCodes, initialBackoff, maxBackoff, /* perAttemptRecvTimeout= */
    null));
}