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command.go
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command.go
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// NOTE: This file is maintained by hand because operationgen cannot generate it.
package operation
import (
"context"
"errors"
"go.mongodb.org/mongo-driver/event"
"go.mongodb.org/mongo-driver/mongo/readconcern"
"go.mongodb.org/mongo-driver/mongo/readpref"
"go.mongodb.org/mongo-driver/x/bsonx/bsoncore"
"go.mongodb.org/mongo-driver/x/mongo/driver"
"go.mongodb.org/mongo-driver/x/mongo/driver/description"
"go.mongodb.org/mongo-driver/x/mongo/driver/session"
)
// Command is used to run a generic operation.
type Command struct {
command bsoncore.Document
readConcern *readconcern.ReadConcern
database string
deployment driver.Deployment
selector description.ServerSelector
readPreference *readpref.ReadPref
clock *session.ClusterClock
session *session.Client
monitor *event.CommandMonitor
result bsoncore.Document
srvr driver.Server
desc description.Server
crypt *driver.Crypt
}
// NewCommand constructs and returns a new Command.
func NewCommand(command bsoncore.Document) *Command { return &Command{command: command} }
// Result returns the result of executing this operation.
func (c *Command) Result() bsoncore.Document { return c.result }
// ResultCursor parses the command response as a cursor and returns the resulting BatchCursor.
func (c *Command) ResultCursor(opts driver.CursorOptions) (*driver.BatchCursor, error) {
cursorRes, err := driver.NewCursorResponse(c.result, c.srvr, c.desc)
if err != nil {
return nil, err
}
return driver.NewBatchCursor(cursorRes, c.session, c.clock, opts)
}
// Execute runs this operations and returns an error if the operaiton did not execute successfully.
func (c *Command) Execute(ctx context.Context) error {
if c.deployment == nil {
return errors.New("the Command operation must have a Deployment set before Execute can be called")
}
return driver.Operation{
CommandFn: func(dst []byte, desc description.SelectedServer) ([]byte, error) {
return append(dst, c.command[4:len(c.command)-1]...), nil
},
ProcessResponseFn: func(resp bsoncore.Document, srvr driver.Server, desc description.Server, currIndex int) error {
c.result = resp
c.srvr = srvr
c.desc = desc
return nil
},
Client: c.session,
Clock: c.clock,
CommandMonitor: c.monitor,
Database: c.database,
Deployment: c.deployment,
ReadPreference: c.readPreference,
Selector: c.selector,
Crypt: c.crypt,
}.Execute(ctx, nil)
}
// Command sets the command to be run.
func (c *Command) Command(command bsoncore.Document) *Command {
if c == nil {
c = new(Command)
}
c.command = command
return c
}
// Session sets the session for this operation.
func (c *Command) Session(session *session.Client) *Command {
if c == nil {
c = new(Command)
}
c.session = session
return c
}
// ClusterClock sets the cluster clock for this operation.
func (c *Command) ClusterClock(clock *session.ClusterClock) *Command {
if c == nil {
c = new(Command)
}
c.clock = clock
return c
}
// CommandMonitor sets the monitor to use for APM events.
func (c *Command) CommandMonitor(monitor *event.CommandMonitor) *Command {
if c == nil {
c = new(Command)
}
c.monitor = monitor
return c
}
// Database sets the database to run this operation against.
func (c *Command) Database(database string) *Command {
if c == nil {
c = new(Command)
}
c.database = database
return c
}
// Deployment sets the deployment to use for this operation.
func (c *Command) Deployment(deployment driver.Deployment) *Command {
if c == nil {
c = new(Command)
}
c.deployment = deployment
return c
}
// ReadConcern specifies the read concern for this operation.
func (c *Command) ReadConcern(readConcern *readconcern.ReadConcern) *Command {
if c == nil {
c = new(Command)
}
c.readConcern = readConcern
return c
}
// ReadPreference set the read prefernce used with this operation.
func (c *Command) ReadPreference(readPreference *readpref.ReadPref) *Command {
if c == nil {
c = new(Command)
}
c.readPreference = readPreference
return c
}
// ServerSelector sets the selector used to retrieve a server.
func (c *Command) ServerSelector(selector description.ServerSelector) *Command {
if c == nil {
c = new(Command)
}
c.selector = selector
return c
}
// Crypt sets the Crypt object to use for automatic encryption and decryption.
func (c *Command) Crypt(crypt *driver.Crypt) *Command {
if c == nil {
c = new(Command)
}
c.crypt = crypt
return c
}