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/**
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
#include <aws/s3/model/SelectObjectContentHandler.h>
#include <aws/s3/S3ErrorMarshaller.h>
#include <aws/core/client/CoreErrors.h>
#include <aws/core/utils/event/EventStreamErrors.h>
#include <aws/core/utils/logging/LogMacros.h>
#include <aws/core/utils/xml/XmlSerializer.h>
using namespace Aws::S3::Model;
using namespace Aws::Utils::Event;
using namespace Aws::Utils::Xml;
namespace Aws
{
namespace S3
{
namespace Model
{
using namespace Aws::Client;
static const char SELECTOBJECTCONTENT_HANDLER_CLASS_TAG[] = "SelectObjectContentHandler";
SelectObjectContentHandler::SelectObjectContentHandler() : EventStreamHandler()
{
m_onRecordsEvent = [&](const RecordsEvent&)
{
AWS_LOGSTREAM_TRACE(SELECTOBJECTCONTENT_HANDLER_CLASS_TAG, "RecordsEvent received.");
};
m_onStatsEvent = [&](const StatsEvent&)
{
AWS_LOGSTREAM_TRACE(SELECTOBJECTCONTENT_HANDLER_CLASS_TAG, "StatsEvent received.");
};
m_onProgressEvent = [&](const ProgressEvent&)
{
AWS_LOGSTREAM_TRACE(SELECTOBJECTCONTENT_HANDLER_CLASS_TAG, "ProgressEvent received.");
};
m_onContinuationEvent = [&]()
{
AWS_LOGSTREAM_TRACE(SELECTOBJECTCONTENT_HANDLER_CLASS_TAG, "ContinuationEvent received.");
};
m_onEndEvent = [&]()
{
AWS_LOGSTREAM_TRACE(SELECTOBJECTCONTENT_HANDLER_CLASS_TAG, "EndEvent received.");
};
m_onError = [&](const AWSError<S3Errors>& error)
{
AWS_LOGSTREAM_TRACE(SELECTOBJECTCONTENT_HANDLER_CLASS_TAG, "S3 Errors received, " << error);
};
}
void SelectObjectContentHandler::OnEvent()
{
// Handler internal error during event stream decoding.
if (!*this)
{
AWSError<CoreErrors> error = EventStreamErrorsMapper::GetAwsErrorForEventStreamError(GetInternalError());
error.SetMessage(GetEventPayloadAsString());
m_onError(AWSError<S3Errors>(error));
return;
}
const auto& headers = GetEventHeaders();
auto messageTypeHeaderIter = headers.find(MESSAGE_TYPE_HEADER);
if (messageTypeHeaderIter == headers.end())
{
AWS_LOGSTREAM_WARN(SELECTOBJECTCONTENT_HANDLER_CLASS_TAG, "Header: " << MESSAGE_TYPE_HEADER << " not found in the message.");
return;
}
switch (Aws::Utils::Event::Message::GetMessageTypeForName(messageTypeHeaderIter->second.GetEventHeaderValueAsString()))
{
case Aws::Utils::Event::Message::MessageType::EVENT:
HandleEventInMessage();
break;
case Aws::Utils::Event::Message::MessageType::REQUEST_LEVEL_ERROR:
case Aws::Utils::Event::Message::MessageType::REQUEST_LEVEL_EXCEPTION:
{
HandleErrorInMessage();
break;
}
default:
AWS_LOGSTREAM_WARN(SELECTOBJECTCONTENT_HANDLER_CLASS_TAG,
"Unexpected message type: " << messageTypeHeaderIter->second.GetEventHeaderValueAsString());
break;
}
}
void SelectObjectContentHandler::HandleEventInMessage()
{
const auto& headers = GetEventHeaders();
auto eventTypeHeaderIter = headers.find(EVENT_TYPE_HEADER);
if (eventTypeHeaderIter == headers.end())
{
AWS_LOGSTREAM_WARN(SELECTOBJECTCONTENT_HANDLER_CLASS_TAG, "Header: " << EVENT_TYPE_HEADER << " not found in the message.");
return;
}
switch (SelectObjectContentEventMapper::GetSelectObjectContentEventTypeForName(eventTypeHeaderIter->second.GetEventHeaderValueAsString()))
{
case SelectObjectContentEventType::RECORDS:
{
RecordsEvent event(GetEventPayloadWithOwnership());
m_onRecordsEvent(event);
break;
}
case SelectObjectContentEventType::STATS:
{
auto xmlDoc = XmlDocument::CreateFromXmlString(GetEventPayloadAsString());
if (!xmlDoc.WasParseSuccessful())
{
AWS_LOGSTREAM_WARN(SELECTOBJECTCONTENT_HANDLER_CLASS_TAG, "Unable to generate a proper StatsEvent object from the response in XML format.");
break;
}
m_onStatsEvent(StatsEvent(xmlDoc.GetRootElement()));
break;
}
case SelectObjectContentEventType::PROGRESS:
{
auto xmlDoc = XmlDocument::CreateFromXmlString(GetEventPayloadAsString());
if (!xmlDoc.WasParseSuccessful())
{
AWS_LOGSTREAM_WARN(SELECTOBJECTCONTENT_HANDLER_CLASS_TAG, "Unable to generate a proper ProgressEvent object from the response in XML format.");
break;
}
m_onProgressEvent(ProgressEvent(xmlDoc.GetRootElement()));
break;
}
case SelectObjectContentEventType::CONT:
{
m_onContinuationEvent();
break;
}
case SelectObjectContentEventType::END:
{
m_onEndEvent();
break;
}
default:
AWS_LOGSTREAM_WARN(SELECTOBJECTCONTENT_HANDLER_CLASS_TAG,
"Unexpected event type: " << eventTypeHeaderIter->second.GetEventHeaderValueAsString());
break;
}
}
void SelectObjectContentHandler::HandleErrorInMessage()
{
const auto& headers = GetEventHeaders();
Aws::String errorCode;
Aws::String errorMessage;
auto errorHeaderIter = headers.find(ERROR_CODE_HEADER);
if (errorHeaderIter == headers.end())
{
errorHeaderIter = headers.find(EXCEPTION_TYPE_HEADER);
if (errorHeaderIter == headers.end())
{
AWS_LOGSTREAM_WARN(SELECTOBJECTCONTENT_HANDLER_CLASS_TAG,
"Error type was not found in the event message.");
return;
}
}
errorCode = errorHeaderIter->second.GetEventHeaderValueAsString();
errorHeaderIter = headers.find(ERROR_MESSAGE_HEADER);
if (errorHeaderIter == headers.end())
{
errorHeaderIter = headers.find(EXCEPTION_TYPE_HEADER);
if (errorHeaderIter == headers.end())
{
AWS_LOGSTREAM_WARN(SELECTOBJECTCONTENT_HANDLER_CLASS_TAG,
"Error description was not found in the event message.");
return;
}
}
errorMessage = errorHeaderIter->second.GetEventHeaderValueAsString();
MarshallError(errorCode, errorMessage);
}
void SelectObjectContentHandler::MarshallError(const Aws::String& errorCode, const Aws::String& errorMessage)
{
S3ErrorMarshaller errorMarshaller;
AWSError<CoreErrors> error;
if (errorCode.empty())
{
error = AWSError<CoreErrors>(CoreErrors::UNKNOWN, "", errorMessage, false);
}
else
{
error = errorMarshaller.FindErrorByName(errorMessage.c_str());
if (error.GetErrorType() != CoreErrors::UNKNOWN)
{
AWS_LOGSTREAM_WARN(SELECTOBJECTCONTENT_HANDLER_CLASS_TAG, "Encountered AWSError '" << errorCode.c_str() << "': " << errorMessage.c_str());
error.SetExceptionName(errorCode);
error.SetMessage(errorMessage);
}
else
{
AWS_LOGSTREAM_WARN(SELECTOBJECTCONTENT_HANDLER_CLASS_TAG, "Encountered Unknown AWSError '" << errorCode.c_str() << "': " << errorMessage.c_str());
error = AWSError<CoreErrors>(CoreErrors::UNKNOWN, errorCode, "Unable to parse ExceptionName: " + errorCode + " Message: " + errorMessage, false);
}
}
m_onError(AWSError<S3Errors>(error));
}
namespace SelectObjectContentEventMapper
{
static const int RECORDS_HASH = Aws::Utils::HashingUtils::HashString("Records");
static const int STATS_HASH = Aws::Utils::HashingUtils::HashString("Stats");
static const int PROGRESS_HASH = Aws::Utils::HashingUtils::HashString("Progress");
static const int CONT_HASH = Aws::Utils::HashingUtils::HashString("Cont");
static const int END_HASH = Aws::Utils::HashingUtils::HashString("End");
SelectObjectContentEventType GetSelectObjectContentEventTypeForName(const Aws::String& name)
{
int hashCode = Aws::Utils::HashingUtils::HashString(name.c_str());
if (hashCode == RECORDS_HASH)
{
return SelectObjectContentEventType::RECORDS;
}
else if (hashCode == STATS_HASH)
{
return SelectObjectContentEventType::STATS;
}
else if (hashCode == PROGRESS_HASH)
{
return SelectObjectContentEventType::PROGRESS;
}
else if (hashCode == CONT_HASH)
{
return SelectObjectContentEventType::CONT;
}
else if (hashCode == END_HASH)
{
return SelectObjectContentEventType::END;
}
return SelectObjectContentEventType::UNKNOWN;
}
Aws::String GetNameForSelectObjectContentEventType(SelectObjectContentEventType value)
{
switch (value)
{
case SelectObjectContentEventType::RECORDS:
return "Records";
case SelectObjectContentEventType::STATS:
return "Stats";
case SelectObjectContentEventType::PROGRESS:
return "Progress";
case SelectObjectContentEventType::CONT:
return "Cont";
case SelectObjectContentEventType::END:
return "End";
default:
return "Unknown";
}
}
} // namespace SelectObjectContentEventMapper
} // namespace Model
} // namespace S3
} // namespace Aws
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