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[aws-cpp-sdk-core]: increase STS reliability and retries #2611

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[aws-cpp-sdk-core]: increase STS reliability and retries #2611

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9 changes: 8 additions & 1 deletion src/aws-cpp-sdk-core/source/auth/STSCredentialsProvider.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -100,12 +100,19 @@ STSAssumeRoleWebIdentityCredentialsProvider::STSAssumeRoleWebIdentityCredentials
Aws::Client::ClientConfiguration config;
config.scheme = Aws::Http::Scheme::HTTPS;
config.region = tmpRegion;
// Set the Connect Timeout to 30s. Default of 1s causes a timeout when STS is under load.
config.connectTimeoutMs = 30000;

Aws::Vector<Aws::String> retryableErrors;
retryableErrors.push_back("IDPCommunicationError");
retryableErrors.push_back("InvalidIdentityToken");

config.retryStrategy = Aws::MakeShared<SpecifiedRetryableErrorsRetryStrategy>(STS_ASSUME_ROLE_WEB_IDENTITY_LOG_TAG, retryableErrors, 3/*maxRetries*/);
// The retry parameters are optimized for STS to still respond when under heavy load in production.
config.retryStrategy = Aws::MakeShared<SpecifiedRetryableErrorsRetryStrategy>(
STS_ASSUME_ROLE_WEB_IDENTITY_LOG_TAG,
retryableErrors,
9, /*maxRetries*/
588 /*scaleFactor*/);

m_client = Aws::MakeUnique<Aws::Internal::STSCredentialsClient>(STS_ASSUME_ROLE_WEB_IDENTITY_LOG_TAG, config);
m_initialized = true;
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