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 Go to latest Published: Feb 1, 2019 License: Apache-2.0 Imports: 21 Imported by: 0

README

MongoDB Go Driver Low-Level Driver Library

The packages within this library allow users to build applications using a low-level driver interface. Knowledge of the internals of a MongoDB driver are assumed, so this library contains advanced features. The aim of this library is to provide an easy to use, high performance implementation of a low-level driver.

This Library's API is experimental and subject to change. Packages may be changed or removed without notice. These APIs are not stable and do not guarantee backward compatibility.

THIS LIBRARY IS EXPERIMENTAL AND SUBJECT TO CHANGE.

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var ErrArrayFilters = errors.New("array filters cannot be set for server versions < 3.6")

ErrArrayFilters is caused if array filters are given for an invalid server version.

View Source 
var ErrCollation = errors.New("collation cannot be set for server versions < 3.4")

ErrCollation is caused if a collation is given for an invalid server version.

View Source 
var ErrFilterType = errors.New("filter must be a string")

ErrFilterType is thrown when a non-string filter is specified.

Functions

func AbortTransaction 

func AbortTransaction(
	ctx context.Context,
	cmd command.AbortTransaction,
	topo *topology.Topology,
	selector description.ServerSelector,
) (result.TransactionResult, error)

AbortTransaction handles the full cycle dispatch and execution of abortting a transaction against the provided topology.

func BulkWrite 

func BulkWrite(
	ctx context.Context,
	ns command.Namespace,
	models []WriteModel,
	topo *topology.Topology,
	selector description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
	retryWrite bool,
	sess *session.Client,
	writeConcern *writeconcern.WriteConcern,
	clock *session.ClusterClock,
	registry *bsoncodec.Registry,
	opts ...*options.BulkWriteOptions,
) (result.BulkWrite, error)

BulkWrite handles the full dispatch cycle for a bulk write operation.

func CommitTransaction 

func CommitTransaction(
	ctx context.Context,
	cmd command.CommitTransaction,
	topo *topology.Topology,
	selector description.ServerSelector,
) (result.TransactionResult, error)

CommitTransaction handles the full cycle dispatch and execution of committing a transaction against the provided topology.

func Count 

func Count(
	ctx context.Context,
	cmd command.Count,
	topo *topology.Topology,
	selector description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
	registry *bsoncodec.Registry,
	opts ...*options.CountOptions,
) (int64, error)

Count handles the full cycle dispatch and execution of a count command against the provided topology.

func CountDocuments 

func CountDocuments(
	ctx context.Context,
	cmd command.CountDocuments,
	topo *topology.Topology,
	selector description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
	registry *bsoncodec.Registry,
	opts ...*options.CountOptions,
) (int64, error)

CountDocuments handles the full cycle dispatch and execution of a countDocuments command against the provided topology.

func CreateIndexes 

func CreateIndexes(
	ctx context.Context,
	cmd command.CreateIndexes,
	topo *topology.Topology,
	selector description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
	opts ...*options.CreateIndexesOptions,
) (result.CreateIndexes, error)

CreateIndexes handles the full cycle dispatch and execution of a createIndexes command against the provided topology.

func Delete 

func Delete(
	ctx context.Context,
	cmd command.Delete,
	topo *topology.Topology,
	selector description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
	retryWrite bool,
	opts ...*options.DeleteOptions,
) (result.Delete, error)

Delete handles the full cycle dispatch and execution of a delete command against the provided topology.

func Distinct 

func Distinct(
	ctx context.Context,
	cmd command.Distinct,
	topo *topology.Topology,
	selector description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
	opts ...*options.DistinctOptions,
) (result.Distinct, error)

Distinct handles the full cycle dispatch and execution of a distinct command against the provided topology.

func DropCollection 

func DropCollection(
	ctx context.Context,
	cmd command.DropCollection,
	topo *topology.Topology,
	selector description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
) (bson.Raw, error)

DropCollection handles the full cycle dispatch and execution of a dropCollection command against the provided topology.

func DropDatabase 

func DropDatabase(
	ctx context.Context,
	cmd command.DropDatabase,
	topo *topology.Topology,
	selector description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
) (bson.Raw, error)

DropDatabase handles the full cycle dispatch and execution of a dropDatabase command against the provided topology.

func DropIndexes 

func DropIndexes(
	ctx context.Context,
	cmd command.DropIndexes,
	topo *topology.Topology,
	selector description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
	opts ...*options.DropIndexesOptions,
) (bson.Raw, error)

DropIndexes handles the full cycle dispatch and execution of a dropIndexes command against the provided topology.

func EndSessions 

func EndSessions(
	ctx context.Context,
	cmd command.EndSessions,
	topo *topology.Topology,
	selector description.ServerSelector,
) ([]result.EndSessions, []error)

EndSessions handles the full cycle dispatch and execution of an endSessions command against the provided topology.

func FindOneAndDelete 

func FindOneAndDelete(
	ctx context.Context,
	cmd command.FindOneAndDelete,
	topo *topology.Topology,
	selector description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
	retryWrite bool,
	registry *bsoncodec.Registry,
	opts ...*options.FindOneAndDeleteOptions,
) (result.FindAndModify, error)

FindOneAndDelete handles the full cycle dispatch and execution of a FindOneAndDelete command against the provided topology.

func FindOneAndReplace 

func FindOneAndReplace(
	ctx context.Context,
	cmd command.FindOneAndReplace,
	topo *topology.Topology,
	selector description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
	retryWrite bool,
	registry *bsoncodec.Registry,
	opts ...*options.FindOneAndReplaceOptions,
) (result.FindAndModify, error)

FindOneAndReplace handles the full cycle dispatch and execution of a FindOneAndReplace command against the provided topology.

func FindOneAndUpdate 

func FindOneAndUpdate(
	ctx context.Context,
	cmd command.FindOneAndUpdate,
	topo *topology.Topology,
	selector description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
	retryWrite bool,
	registry *bsoncodec.Registry,
	opts ...*options.FindOneAndUpdateOptions,
) (result.FindAndModify, error)

FindOneAndUpdate handles the full cycle dispatch and execution of a FindOneAndUpdate command against the provided topology.

func Insert 

func Insert(
	ctx context.Context,
	cmd command.Insert,
	topo *topology.Topology,
	selector description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
	retryWrite bool,
	opts ...*options.InsertManyOptions,
) (result.Insert, error)

Insert handles the full cycle dispatch and execution of an insert command against the provided topology.

func KillCursors 

func KillCursors(
	ctx context.Context,
	cmd command.KillCursors,
	topo *topology.Topology,
	selector description.ServerSelector,
) (result.KillCursors, error)

KillCursors handles the full cycle dispatch and execution of an aggregate command against the provided topology.

func ListDatabases 

func ListDatabases(
	ctx context.Context,
	cmd command.ListDatabases,
	topo *topology.Topology,
	selector description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
	opts ...*options.ListDatabasesOptions,
) (result.ListDatabases, error)

ListDatabases handles the full cycle dispatch and execution of a listDatabases command against the provided topology.

func Read 

func Read(
	ctx context.Context,
	cmd command.Read,
	topo *topology.Topology,
	selector description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
) (bson.Raw, error)

Read handles the full cycle dispatch and execution of a read command against the provided topology.

func Update 

func Update(
	ctx context.Context,
	cmd command.Update,
	topo *topology.Topology,
	selector description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
	retryWrite bool,
	opts ...*options.UpdateOptions,
) (result.Update, error)

Update handles the full cycle dispatch and execution of an update command against the provided topology.

func Write 

func Write(
	ctx context.Context,
	cmd command.Write,
	topo *topology.Topology,
	selector description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
) (bson.Raw, error)

Write handles the full cycle dispatch and execution of a write command against the provided topology.

Types

type BatchCursor 

type BatchCursor struct {
	// contains filtered or unexported fields
}

BatchCursor is a batch implementation of a cursor. It returns documents in entire batches instead of one at a time. An individual document cursor can be built on top of this batch cursor.

func Aggregate 

func Aggregate(
	ctx context.Context,
	cmd command.Aggregate,
	topo *topology.Topology,
	readSelector, writeSelector description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
	registry *bsoncodec.Registry,
	opts ...*options.AggregateOptions,
) (*BatchCursor, error)

Aggregate handles the full cycle dispatch and execution of an aggregate command against the provided topology.

func Find 

func Find(
	ctx context.Context,
	cmd command.Find,
	topo *topology.Topology,
	selector description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
	registry *bsoncodec.Registry,
	opts ...*options.FindOptions,
) (*BatchCursor, error)

Find handles the full cycle dispatch and execution of a find command against the provided topology.

func ListIndexes 

func ListIndexes(
	ctx context.Context,
	cmd command.ListIndexes,
	topo *topology.Topology,
	selector description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
	opts ...*options.ListIndexesOptions,
) (*BatchCursor, error)

ListIndexes handles the full cycle dispatch and execution of a listIndexes command against the provided topology.

func NewBatchCursor 

func NewBatchCursor(result bsoncore.Document, clientSession *session.Client, clock *session.ClusterClock, server *topology.Server, opts ...bsonx.Elem) (*BatchCursor, error)

NewBatchCursor creates a new BatchCursor from the provided parameters.

func NewEmptyBatchCursor 

func NewEmptyBatchCursor() *BatchCursor

NewEmptyBatchCursor returns a batch cursor that is empty.

func NewLegacyBatchCursor 

func NewLegacyBatchCursor(ns command.Namespace, cursorID int64, batch []bson.Raw, limit int32, batchSize int32, server *topology.Server) (*BatchCursor, error)

NewLegacyBatchCursor creates a new BatchCursor for server versions 3.0 and below from the provided parameters.

TODO(GODRIVER-617): The batch parameter here should be []bsoncore.Document. Change it to this once we have the new wiremessage package that uses bsoncore instead of bson.

func ReadCursor 

func ReadCursor(
	ctx context.Context,
	cmd command.Read,
	topo *topology.Topology,
	selecctor description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
	cursorOpts ...bsonx.Elem,
) (*BatchCursor, error)

ReadCursor handles the full dispatch cycle and execution of a read command against the provided topology and returns a Cursor over the resulting BSON reader.

func (*BatchCursor) Batch 

func (bc *BatchCursor) Batch(dst []byte) []byte

Batch will append the current batch of documents to dst. RequiredBytes can be called to determine the length of the current batch of documents.

If there is no batch available, this method does nothing.

func (*BatchCursor) Close 

func (bc *BatchCursor) Close(ctx context.Context) error

Close closes this batch cursor.

func (*BatchCursor) Err 

func (bc *BatchCursor) Err() error

Err returns the latest error encountered.

func (*BatchCursor) ID 

func (bc *BatchCursor) ID() int64

ID returns the cursor ID for this batch cursor.

func (*BatchCursor) Next 

func (bc *BatchCursor) Next(ctx context.Context) bool

Next indicates if there is another batch available. Returning false does not necessarily indicate that the cursor is closed. This method will return false when an empty batch is returned.

If Next returns true, there is a valid batch of documents available. If Next returns false, there is not a valid batch of documents available.

func (*BatchCursor) RequiredBytes 

func (bc *BatchCursor) RequiredBytes() int

RequiredBytes returns the number of bytes required for the current batch.

type BulkWriteError 

type BulkWriteError struct {
	result.WriteError
	Model WriteModel
}

BulkWriteError is an error from one operation in a bulk write.

type BulkWriteException 

type BulkWriteException struct {
	WriteConcernError *result.WriteConcernError
	WriteErrors       []BulkWriteError
}

BulkWriteException is a collection of errors returned by a bulk write operation.

func (BulkWriteException) Error 

func (BulkWriteException) Error() string

type DeleteManyModel 

type DeleteManyModel struct {
	Filter    interface{}
	Collation *options.Collation
}

DeleteManyModel is the write model for deleteMany operations.

type DeleteOneModel 

type DeleteOneModel struct {
	Filter    interface{}
	Collation *options.Collation
}

DeleteOneModel is the write model for delete operations.

type InsertOneModel 

type InsertOneModel struct {
	Document interface{}
}

InsertOneModel is the write model for insert operations.

type ListCollectionsBatchCursor 

type ListCollectionsBatchCursor struct {
	// contains filtered or unexported fields
}

ListCollectionsBatchCursor is a special batch cursor returned from ListCollections that properly handles current and legacy ListCollections operations.

func ListCollections 

func ListCollections(
	ctx context.Context,
	cmd command.ListCollections,
	topo *topology.Topology,
	selector description.ServerSelector,
	clientID uuid.UUID,
	pool *session.Pool,
	opts ...*options.ListCollectionsOptions,
) (*ListCollectionsBatchCursor, error)

ListCollections handles the full cycle dispatch and execution of a listCollections command against the provided topology.

func NewLegacyListCollectionsBatchCursor 

func NewLegacyListCollectionsBatchCursor(bc *BatchCursor) (*ListCollectionsBatchCursor, error)

NewLegacyListCollectionsBatchCursor creates a new legacy ListCollectionsCursor.

func NewListCollectionsBatchCursor 

func NewListCollectionsBatchCursor(bc *BatchCursor) (*ListCollectionsBatchCursor, error)

NewListCollectionsBatchCursor creates a new non-legacy ListCollectionsCursor.

func (*ListCollectionsBatchCursor) Batch 

func (lcbc *ListCollectionsBatchCursor) Batch(dst []byte) []byte

Batch will append the current batch of documents to dst. RequiredBytes can be called to determine the length of the current batch of documents.

If there is no batch available, this method does nothing.

func (*ListCollectionsBatchCursor) Close 

func (lcbc *ListCollectionsBatchCursor) Close(ctx context.Context) error

Close closes this batch cursor.

func (*ListCollectionsBatchCursor) Err 

func (lcbc *ListCollectionsBatchCursor) Err() error

Err returns the latest error encountered.

func (*ListCollectionsBatchCursor) ID 

func (lcbc *ListCollectionsBatchCursor) ID() int64

ID returns the cursor ID for this batch cursor.

func (*ListCollectionsBatchCursor) Next 

func (lcbc *ListCollectionsBatchCursor) Next(ctx context.Context) bool

Next indicates if there is another batch available. Returning false does not necessarily indicate that the cursor is closed. This method will return false when an empty batch is returned.

If Next returns true, there is a valid batch of documents available. If Next returns false, there is not a valid batch of documents available.

func (*ListCollectionsBatchCursor) RequiredBytes 

func (lcbc *ListCollectionsBatchCursor) RequiredBytes() int

RequiredBytes returns the number of bytes required for the current batch.

type ReplaceOneModel 

type ReplaceOneModel struct {
	Filter      interface{}
	Replacement interface{}
	UpdateModel
}

ReplaceOneModel is the write model for replace operations.

type UpdateManyModel 

type UpdateManyModel struct {
	Filter interface{}
	Update interface{}
	// default is to not send a value. for servers < 3.6, error raised if value given. for unack writes using opcodes,
	// error raised if value given
	ArrayFilters    options.ArrayFilters
	ArrayFiltersSet bool
	UpdateModel
}

UpdateManyModel is the write model for updateMany operations.

type UpdateModel 

type UpdateModel struct {
	Collation *options.Collation
	Upsert    bool
	UpsertSet bool
}

UpdateModel contains the fields that are shared between the ReplaceOneModel, UpdateOneModel, and UpdateManyModel types

type UpdateOneModel 

type UpdateOneModel struct {
	Filter interface{}
	Update interface{}
	// default is to not send a value. for servers < 3.6, error raised if value given. for unack writes using opcodes,
	// error raised if value given
	ArrayFilters    options.ArrayFilters
	ArrayFiltersSet bool
	UpdateModel
}

UpdateOneModel is the write model for update operations.

type WriteModel 

type WriteModel interface {
	// contains filtered or unexported methods
}

WriteModel is the interface satisfied by all models for bulk writes.

Source Files

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Directories

Path Synopsis
Package auth is not for public use.
 Package auth is not for public use.
Package topology contains types that handles the discovery, monitoring, and selection of servers.
 Package topology contains types that handles the discovery, monitoring, and selection of servers.

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