private CursorBatch <TDocument> ExecuteGetMoreCommand(IChannelHandle channel, CancellationToken cancellationToken)
{
var command = CreateGetMoreCommand();
BsonDocument result;
try
{
result = channel.Command <BsonDocument>(
_channelSource.Session,
null, // readPreference
_collectionNamespace.DatabaseNamespace,
command,
null, // commandPayloads
NoOpElementNameValidator.Instance,
null, // additionalOptions
null, // postWriteAction
CommandResponseHandling.Return,
__getMoreCommandResultSerializer,
_messageEncoderSettings,
cancellationToken);
}
catch (MongoCommandException ex) when(IsMongoCursorNotFoundException(ex))
{
throw new MongoCursorNotFoundException(channel.ConnectionDescription.ConnectionId, _cursorId, command);
}
return(CreateCursorBatch(result));
}
private IReadOnlyList <BsonDocument> GetFirstBatchUsingFindCommand(IChannelHandle channel, BsonDocument query, int batchSize, CancellationToken cancellationToken, out long cursorId)
{
var command = new BsonDocument
{
{ "find", _collectionNamespace.CollectionName },
{ "filter", query },
{ "batchSize", batchSize }
};
var result = channel.Command <BsonDocument>(
_session,
ReadPreference.Primary,
_databaseNamespace,
command,
null, // payloads
NoOpElementNameValidator.Instance,
null, // additionalOptions
null, // postWriteAction
CommandResponseHandling.Return,
BsonDocumentSerializer.Instance,
_messageEncoderSettings,
cancellationToken);
var cursor = result["cursor"].AsBsonDocument;
var firstBatch = cursor["firstBatch"].AsBsonArray.Select(i => i.AsBsonDocument).ToList();
cursorId = cursor["id"].ToInt64();
return(firstBatch);
}
private BsonDocument ExecuteProtocol(IChannelHandle channel, BsonDocument command, Func <CommandResponseHandling> responseHandling, CancellationToken cancellationToken)
{
return(channel.Command <BsonDocument>(
_collectionNamespace.DatabaseNamespace,
command,
NoOpElementNameValidator.Instance,
responseHandling,
false, // slaveOk
BsonDocumentSerializer.Instance,
_messageEncoderSettings,
cancellationToken) ?? new BsonDocument("ok", 1));
}
private CursorBatch <TDocument> ExecuteGetMoreCommand(IChannelHandle channel, CancellationToken cancellationToken)
{
var command = CreateGetMoreCommand();
var result = channel.Command <BsonDocument>(
_collectionNamespace.DatabaseNamespace,
command,
NoOpElementNameValidator.Instance,
() => CommandResponseHandling.Return,
false, // slaveOk
__getMoreCommandResultSerializer,
_messageEncoderSettings,
cancellationToken);
return(CreateCursorBatch(result));
}
private TCommandResult ExecuteProtocol(IChannelHandle channel, ServerDescription serverDescription, ReadPreference readPreference, CancellationToken cancellationToken)
{
var wrappedCommand = CreateWrappedCommand(serverDescription, readPreference);
var slaveOk = readPreference != null && readPreference.ReadPreferenceMode != ReadPreferenceMode.Primary;
return(channel.Command <TCommandResult>(
_databaseNamespace,
wrappedCommand,
_commandValidator,
() => CommandResponseHandling.Return,
slaveOk,
_resultSerializer,
_messageEncoderSettings,
cancellationToken));
}
private CursorBatch <TDocument> ExecuteProtocol(IChannelHandle channel, ServerDescription serverDescription, ReadPreference readPreference, bool slaveOk, CancellationToken cancellationToken)
{
var command = CreateCommand(serverDescription, readPreference);
var result = channel.Command <BsonDocument>(
_collectionNamespace.DatabaseNamespace,
command,
NoOpElementNameValidator.Instance,
() => CommandResponseHandling.Return,
slaveOk,
__findCommandResultSerializer,
_messageEncoderSettings,
cancellationToken);
return(CreateCursorBatch(result));
}
// methods
private TCommandResult ExecuteProtocol(IChannelHandle channel, ICoreSessionHandle session, ReadPreference readPreference, CancellationToken cancellationToken)
{
var additionalOptions = GetEffectiveAdditionalOptions();
return(channel.Command(
session,
readPreference,
_databaseNamespace,
_command,
_commandValidator,
additionalOptions,
() => CommandResponseHandling.Return,
_resultSerializer,
_messageEncoderSettings,
cancellationToken));
}
private CursorBatch <TDocument> ExecuteGetMoreCommand(IChannelHandle channel, CancellationToken cancellationToken)
{
var command = CreateGetMoreCommand();
var result = channel.Command <BsonDocument>(
_channelSource.Session,
null, // readPreference
_collectionNamespace.DatabaseNamespace,
command,
NoOpElementNameValidator.Instance,
null, // additionalOptions
() => CommandResponseHandling.Return,
__getMoreCommandResultSerializer,
_messageEncoderSettings,
cancellationToken);
return(CreateCursorBatch(result));
}
private void ExecuteKillCursorsCommand(IChannelHandle channel, CancellationToken cancellationToken)
{
var command = CreateKillCursorsCommand();
var result = channel.Command(
_channelSource.Session,
null, // readPreference
_collectionNamespace.DatabaseNamespace,
command,
null, // commandPayloads
NoOpElementNameValidator.Instance,
null, // additionalOptions
null, // postWriteAction
CommandResponseHandling.Return,
BsonDocumentSerializer.Instance,
_messageEncoderSettings,
cancellationToken);
ThrowIfKillCursorsCommandFailed(result, channel.ConnectionDescription.ConnectionId);
}