std::shared_ptr AWSDefaultCredentialHandler::GetCredentialsProvider()

in Gems/AWSCore/Code/Source/Credential/AWSDefaultCredentialHandler.cpp [41:95]
50 lines of code
8 McCabe index (conditional complexity)

    std::shared_ptr<Aws::Auth::AWSCredentialsProvider> AWSDefaultCredentialHandler::GetCredentialsProvider()
    {
        {
            AZStd::lock_guard<AZStd::mutex> credentialsLock{m_credentialMutex};
            auto credentials = m_environmentCredentialsProvider->GetAWSCredentials();
            if (!credentials.IsEmpty())
            {
                return m_environmentCredentialsProvider;
            }
        }

        {
            AZStd::lock_guard<AZStd::mutex> credentialsLock{m_credentialMutex};
            AZStd::string newProfileName = "";
            AWSCoreInternalRequestBus::BroadcastResult(newProfileName, &AWSCoreInternalRequests::GetProfileName);
            if (newProfileName != m_profileName)
            {
                m_profileName = newProfileName;
                SetProfileCredentialsProvider(Aws::MakeShared<Aws::Auth::ProfileConfigFileAWSCredentialsProvider>(
                    AWSDEFAULTCREDENTIALHANDLER_ALLOC_TAG, m_profileName.c_str()));
            }

            auto credentials = m_profileCredentialsProvider->GetAWSCredentials();
            if (!credentials.IsEmpty())
            {
                return m_profileCredentialsProvider;
            }
        }

        {
            AZStd::lock_guard<AZStd::mutex> credentialsLock{ m_credentialMutex };
            bool allowAWSMetadata = false;
            AWSCoreInternalRequestBus::BroadcastResult(allowAWSMetadata, &AWSCoreInternalRequests::IsAllowedAWSMetadataCredentials);
            if (allowAWSMetadata)
            {
                const auto ec2MetadataDisabled = Aws::Environment::GetEnv(AWS_EC2_METADATA_DISABLED);
                if (Aws::Utils::StringUtils::ToLower(ec2MetadataDisabled.c_str()) != "true")
                {
                    if (!m_instanceProfileCredentialsProvider)
                    {
                        SetInstanceProfileCredentialProvider(
                            Aws::MakeShared<Aws::Auth::InstanceProfileCredentialsProvider>(AWSDEFAULTCREDENTIALHANDLER_ALLOC_TAG));
                    }

                    auto credentials = m_instanceProfileCredentialsProvider->GetAWSCredentials();
                    if (!credentials.IsEmpty())
                    {
                        return m_instanceProfileCredentialsProvider;
                    }
                }
            }
        }

        return nullptr;
    }