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update.go
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update.go
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// Copyright (C) MongoDB, Inc. 2019-present.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
package operation
import (
"context"
"errors"
"fmt"
"time"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/bson/bsontype"
"go.mongodb.org/mongo-driver/event"
"go.mongodb.org/mongo-driver/internal/driverutil"
"go.mongodb.org/mongo-driver/internal/logger"
"go.mongodb.org/mongo-driver/mongo/description"
"go.mongodb.org/mongo-driver/mongo/writeconcern"
"go.mongodb.org/mongo-driver/x/bsonx/bsoncore"
"go.mongodb.org/mongo-driver/x/mongo/driver"
"go.mongodb.org/mongo-driver/x/mongo/driver/session"
)
// Update performs an update operation.
type Update struct {
bypassDocumentValidation *bool
comment bsoncore.Value
ordered *bool
updates []bsoncore.Document
session *session.Client
clock *session.ClusterClock
collection string
monitor *event.CommandMonitor
database string
deployment driver.Deployment
hint *bool
arrayFilters *bool
selector description.ServerSelector
writeConcern *writeconcern.WriteConcern
retry *driver.RetryMode
result UpdateResult
crypt driver.Crypt
serverAPI *driver.ServerAPIOptions
let bsoncore.Document
timeout *time.Duration
logger *logger.Logger
}
// Upsert contains the information for an upsert in an Update operation.
type Upsert struct {
Index int64
ID interface{} `bson:"_id"`
}
// UpdateResult contains information for the result of an Update operation.
type UpdateResult struct {
// Number of documents matched.
N int64
// Number of documents modified.
NModified int64
// Information about upserted documents.
Upserted []Upsert
}
func buildUpdateResult(response bsoncore.Document) (UpdateResult, error) {
elements, err := response.Elements()
if err != nil {
return UpdateResult{}, err
}
ur := UpdateResult{}
for _, element := range elements {
switch element.Key() {
case "nModified":
var ok bool
ur.NModified, ok = element.Value().AsInt64OK()
if !ok {
return ur, fmt.Errorf("response field 'nModified' is type int32 or int64, but received BSON type %s", element.Value().Type)
}
case "n":
var ok bool
ur.N, ok = element.Value().AsInt64OK()
if !ok {
return ur, fmt.Errorf("response field 'n' is type int32 or int64, but received BSON type %s", element.Value().Type)
}
case "upserted":
arr, ok := element.Value().ArrayOK()
if !ok {
return ur, fmt.Errorf("response field 'upserted' is type array, but received BSON type %s", element.Value().Type)
}
var values []bsoncore.Value
values, err = arr.Values()
if err != nil {
break
}
for _, val := range values {
valDoc, ok := val.DocumentOK()
if !ok {
return ur, fmt.Errorf("upserted value is type document, but received BSON type %s", val.Type)
}
var upsert Upsert
if err = bson.Unmarshal(valDoc, &upsert); err != nil {
return ur, err
}
ur.Upserted = append(ur.Upserted, upsert)
}
}
}
return ur, nil
}
// NewUpdate constructs and returns a new Update.
func NewUpdate(updates ...bsoncore.Document) *Update {
return &Update{
updates: updates,
}
}
// Result returns the result of executing this operation.
func (u *Update) Result() UpdateResult { return u.result }
func (u *Update) processResponse(info driver.ResponseInfo) error {
ur, err := buildUpdateResult(info.ServerResponse)
u.result.N += ur.N
u.result.NModified += ur.NModified
if info.CurrentIndex > 0 {
for ind := range ur.Upserted {
ur.Upserted[ind].Index += int64(info.CurrentIndex)
}
}
u.result.Upserted = append(u.result.Upserted, ur.Upserted...)
return err
}
// Execute runs this operations and returns an error if the operation did not execute successfully.
func (u *Update) Execute(ctx context.Context) error {
if u.deployment == nil {
return errors.New("the Update operation must have a Deployment set before Execute can be called")
}
batches := &driver.Batches{
Identifier: "updates",
Documents: u.updates,
Ordered: u.ordered,
}
return driver.Operation{
CommandFn: u.command,
ProcessResponseFn: u.processResponse,
Batches: batches,
RetryMode: u.retry,
Type: driver.Write,
Client: u.session,
Clock: u.clock,
CommandMonitor: u.monitor,
Database: u.database,
Deployment: u.deployment,
Selector: u.selector,
WriteConcern: u.writeConcern,
Crypt: u.crypt,
ServerAPI: u.serverAPI,
Timeout: u.timeout,
Logger: u.logger,
Name: driverutil.UpdateOp,
}.Execute(ctx)
}
func (u *Update) command(dst []byte, desc description.SelectedServer) ([]byte, error) {
dst = bsoncore.AppendStringElement(dst, "update", u.collection)
if u.bypassDocumentValidation != nil &&
(desc.WireVersion != nil && desc.WireVersion.Includes(4)) {
dst = bsoncore.AppendBooleanElement(dst, "bypassDocumentValidation", *u.bypassDocumentValidation)
}
if u.comment.Type != bsontype.Type(0) {
dst = bsoncore.AppendValueElement(dst, "comment", u.comment)
}
if u.ordered != nil {
dst = bsoncore.AppendBooleanElement(dst, "ordered", *u.ordered)
}
if u.hint != nil && *u.hint {
if desc.WireVersion == nil || !desc.WireVersion.Includes(5) {
return nil, errors.New("the 'hint' command parameter requires a minimum server wire version of 5")
}
if !u.writeConcern.Acknowledged() {
return nil, errUnacknowledgedHint
}
}
if u.arrayFilters != nil && *u.arrayFilters {
if desc.WireVersion == nil || !desc.WireVersion.Includes(6) {
return nil, errors.New("the 'arrayFilters' command parameter requires a minimum server wire version of 6")
}
}
if u.let != nil {
dst = bsoncore.AppendDocumentElement(dst, "let", u.let)
}
return dst, nil
}
// BypassDocumentValidation allows the operation to opt-out of document level validation. Valid
// for server versions >= 3.2. For servers < 3.2, this setting is ignored.
func (u *Update) BypassDocumentValidation(bypassDocumentValidation bool) *Update {
if u == nil {
u = new(Update)
}
u.bypassDocumentValidation = &bypassDocumentValidation
return u
}
// Hint is a flag to indicate that the update document contains a hint. Hint is only supported by
// servers >= 4.2. Older servers >= 3.4 will report an error for using the hint option. For servers <
// 3.4, the driver will return an error if the hint option is used.
func (u *Update) Hint(hint bool) *Update {
if u == nil {
u = new(Update)
}
u.hint = &hint
return u
}
// ArrayFilters is a flag to indicate that the update document contains an arrayFilters field. This option is only
// supported on server versions 3.6 and higher. For servers < 3.6, the driver will return an error.
func (u *Update) ArrayFilters(arrayFilters bool) *Update {
if u == nil {
u = new(Update)
}
u.arrayFilters = &arrayFilters
return u
}
// Ordered sets ordered. If true, when a write fails, the operation will return the error, when
// false write failures do not stop execution of the operation.
func (u *Update) Ordered(ordered bool) *Update {
if u == nil {
u = new(Update)
}
u.ordered = &ordered
return u
}
// Updates specifies an array of update statements to perform when this operation is executed.
// Each update document must have the following structure:
// {q: <query>, u: <update>, multi: <boolean>, collation: Optional<Document>, arrayFitlers: Optional<Array>, hint: Optional<string/Document>}.
func (u *Update) Updates(updates ...bsoncore.Document) *Update {
if u == nil {
u = new(Update)
}
u.updates = updates
return u
}
// Session sets the session for this operation.
func (u *Update) Session(session *session.Client) *Update {
if u == nil {
u = new(Update)
}
u.session = session
return u
}
// ClusterClock sets the cluster clock for this operation.
func (u *Update) ClusterClock(clock *session.ClusterClock) *Update {
if u == nil {
u = new(Update)
}
u.clock = clock
return u
}
// Collection sets the collection that this command will run against.
func (u *Update) Collection(collection string) *Update {
if u == nil {
u = new(Update)
}
u.collection = collection
return u
}
// CommandMonitor sets the monitor to use for APM events.
func (u *Update) CommandMonitor(monitor *event.CommandMonitor) *Update {
if u == nil {
u = new(Update)
}
u.monitor = monitor
return u
}
// Comment sets a value to help trace an operation.
func (u *Update) Comment(comment bsoncore.Value) *Update {
if u == nil {
u = new(Update)
}
u.comment = comment
return u
}
// Database sets the database to run this operation against.
func (u *Update) Database(database string) *Update {
if u == nil {
u = new(Update)
}
u.database = database
return u
}
// Deployment sets the deployment to use for this operation.
func (u *Update) Deployment(deployment driver.Deployment) *Update {
if u == nil {
u = new(Update)
}
u.deployment = deployment
return u
}
// ServerSelector sets the selector used to retrieve a server.
func (u *Update) ServerSelector(selector description.ServerSelector) *Update {
if u == nil {
u = new(Update)
}
u.selector = selector
return u
}
// WriteConcern sets the write concern for this operation.
func (u *Update) WriteConcern(writeConcern *writeconcern.WriteConcern) *Update {
if u == nil {
u = new(Update)
}
u.writeConcern = writeConcern
return u
}
// Retry enables retryable writes for this operation. Retries are not handled automatically,
// instead a boolean is returned from Execute and SelectAndExecute that indicates if the
// operation can be retried. Retrying is handled by calling RetryExecute.
func (u *Update) Retry(retry driver.RetryMode) *Update {
if u == nil {
u = new(Update)
}
u.retry = &retry
return u
}
// Crypt sets the Crypt object to use for automatic encryption and decryption.
func (u *Update) Crypt(crypt driver.Crypt) *Update {
if u == nil {
u = new(Update)
}
u.crypt = crypt
return u
}
// ServerAPI sets the server API version for this operation.
func (u *Update) ServerAPI(serverAPI *driver.ServerAPIOptions) *Update {
if u == nil {
u = new(Update)
}
u.serverAPI = serverAPI
return u
}
// Let specifies the let document to use. This option is only valid for server versions 5.0 and above.
func (u *Update) Let(let bsoncore.Document) *Update {
if u == nil {
u = new(Update)
}
u.let = let
return u
}
// Timeout sets the timeout for this operation.
func (u *Update) Timeout(timeout *time.Duration) *Update {
if u == nil {
u = new(Update)
}
u.timeout = timeout
return u
}
// Logger sets the logger for this operation.
func (u *Update) Logger(logger *logger.Logger) *Update {
if u == nil {
u = new(Update)
}
u.logger = logger
return u
}