db

package
v0.0.0-...-7dc4ea3 Latest Latest
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 Go to latest Published: Nov 21, 2024 License: Apache-2.0 Imports: 15 Imported by: 188

Documentation

Overview

Package db manages Evergreen's interaction with the database.

Index

Constants

View Source 
const FacetPipelineStageTooLargeCode = 4031700

FacetPipelineStageTooLargeCode is the error code for when a facet pipeline stage is too large. https://github.com/mongodb/mongo/blob/a1732172ed5d66d98582ea1059c0ede9d8cd5065/src/mongo/db/pipeline/document_source_facet.cpp#L165

Variables

View Source 
var (
	NoProjection             = bson.M{}
	NoSort                   = []string{}
	NoSkip                   = 0
	NoLimit                  = 0
	NoHint       interface{} = nil
)

Functions

func Aggregate 

func Aggregate(collection string, pipeline interface{}, out interface{}) error

Aggregate runs an aggregation pipeline on a collection and unmarshals the results to the given "out" interface (usually a pointer to an array of structs/bson.M)

func AggregateWithMaxTime 

func AggregateWithMaxTime(collection string, pipeline interface{}, out interface{}, maxTime time.Duration) error

AggregateWithMaxTime runs aggregate and specifies a max query time which ensures the query won't go on indefinitely when the request is cancelled.

func Clear 

func Clear(collection string) error

Clear removes all documents from a specified collection.

func ClearCollections 

func ClearCollections(collections ...string) error

ClearCollections clears all documents from all the specified collections, returning an error immediately if clearing any one of them fails.

func ClearGridCollections 

func ClearGridCollections(fsPrefix string) error

func Count 

func Count(collection string, query interface{}) (int, error)

Count run a count command with the specified query against the collection.

func CountQ 

func CountQ(collection string, q Q) (int, error)

CountQ runs a Q count query against the given collection.

func CreateCollections 

func CreateCollections(collections ...string) error

CreateCollections ensures that all the given collections are created, returning an error immediately if creating any one of them fails.

func DropCollections 

func DropCollections(collections ...string) error

DropCollections drops the specified collections, returning an error immediately if dropping any one of them fails.

func EnsureIndex 

func EnsureIndex(collection string, index mongo.IndexModel) error

EnsureIndex takes in a collection and ensures that the index is created if it does not already exist.

func FindAllQ 

func FindAllQ(collection string, q Q, out interface{}) error

FindAllQ runs a Q query against the given collection, applying the results to "out."

func FindAndModify 

func FindAndModify(collection string, query interface{}, sort []string, change db.Change, out interface{}) (*db.ChangeInfo, error)

FindAndModify runs the specified query and change against the collection, unmarshaling the result into the specified interface.

func FindOneQ 

func FindOneQ(collection string, q Q, out interface{}) error

FindOneQ runs a Q query against the given collection, applying the results to "out." Only reads one document from the DB.

func GetGridFile 

func GetGridFile(fsPrefix, name string) (io.ReadCloser, error)

GetGridFile returns a ReadCloser for a file stored with the given name under the GridFS prefix.

func Insert 

func Insert(collection string, item interface{}) error

Insert inserts the specified item into the specified collection.

func InsertMany 

func InsertMany(collection string, items ...interface{}) error

func InsertManyUnordered 

func InsertManyUnordered(c string, items ...interface{}) error

func IsDocumentLimit 

func IsDocumentLimit(err error) bool

func IsDuplicateKey 

func IsDuplicateKey(err error) bool

func IsErrorCode 

func IsErrorCode(err error, errorCode int) bool

IsErrorCode checks if the error is a mongo error with the given error code.

func Remove 

func Remove(collection string, query interface{}) error

Remove removes one item matching the query from the specified collection.

func RemoveAll 

func RemoveAll(collection string, query interface{}) error

RemoveAll removes all items matching the query from the specified collection.

func RemoveAllQ 

func RemoveAllQ(collection string, q Q) error

RemoveAllQ removes all docs that satisfy the query

func Update 

func Update(collection string, query interface{}, update interface{}) error

Update updates one matching document in the collection.

func UpdateAll 

func UpdateAll(collection string, query interface{}, update interface{}) (*db.ChangeInfo, error)

UpdateAll updates all matching documents in the collection.

func UpdateId 

func UpdateId(collection string, id, update interface{}) error

UpdateId updates one _id-matching document in the collection.

func Upsert 

func Upsert(collection string, query interface{}, update interface{}) (*db.ChangeInfo, error)

Upsert run the specified update against the collection as an upsert operation.

func WriteGridFile 

func WriteGridFile(fsPrefix, name string, source io.Reader) error

WriteGridFile writes the data in the source Reader to a GridFS collection with the given prefix and filename.

Types

type Q 

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

Q holds all information necessary to execute a query

func Query 

func Query(filter interface{}) Q

Query creates a db.Q for the given MongoDB query. The filter can be a struct, bson.D, bson.M, nil, etc.

func (Q) Filter 

func (q Q) Filter(filter interface{}) Q

func (Q) GetBSON 

func (q Q) GetBSON() (interface{}, error)

func (Q) Hint 

func (q Q) Hint(hint interface{}) Q

Hint sets the hint for a query to determine what index will be used. The hint can be either the index as an ordered document of the keys or a

func (Q) Limit 

func (q Q) Limit(limit int) Q

func (Q) MarshalBSON 

func (q Q) MarshalBSON() ([]byte, error)

func (Q) MaxTime 

func (q Q) MaxTime(maxTime time.Duration) Q

MaxTime sets the maxTime for a query to time out the query on the db server.

func (Q) Project 

func (q Q) Project(projection interface{}) Q

func (Q) SetBSON 

func (q Q) SetBSON(_ bson.Raw) error

func (Q) Skip 

func (q Q) Skip(skip int) Q

func (Q) Sort 

func (q Q) Sort(sort []string) Q

func (Q) UnmarshalBSON 

func (q Q) UnmarshalBSON(_ []byte) error

func (Q) WithFields 

func (q Q) WithFields(fields ...string) Q

func (Q) WithoutFields 

func (q Q) WithoutFields(fields ...string) Q

type SessionFactory 

type SessionFactory interface {
	// GetSession uses the global environment's context to get a session and database.
	GetSession() (db.Session, db.Database, error)
	// GetContextSession uses the provided context to get a session and database.
	// This is needed for operations that need control over the passed-in context.
	// TODO DEVPROD-11824 Use this method instead of GetSession.
	GetContextSession(ctx context.Context) (db.Session, db.Database, error)
}

func GetGlobalSessionFactory 

func GetGlobalSessionFactory() SessionFactory

Source Files

View all Source files

Directories

Path Synopsis
mgo
Package mgo provides support for Evergreen's remaining usages of the legacy MongoDB driver gopkg.in/mgo.v2.
 Package mgo provides support for Evergreen's remaining usages of the legacy MongoDB driver gopkg.in/mgo.v2.
bson
Package bson is an implementation of the BSON specification for Go:
 Package bson is an implementation of the BSON specification for Go:
internal/json
Package json implements encoding and decoding of JSON as defined in RFC 4627.
 Package json implements encoding and decoding of JSON as defined in RFC 4627.

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