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insert.go
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insert.go
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// Copyright (C) MongoDB, Inc. 2017-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 driver
import (
"context"
"go.mongodb.org/mongo-driver/mongo/options"
"go.mongodb.org/mongo-driver/x/bsonx"
"go.mongodb.org/mongo-driver/mongo/writeconcern"
"go.mongodb.org/mongo-driver/x/mongo/driver/session"
"go.mongodb.org/mongo-driver/x/mongo/driver/topology"
"go.mongodb.org/mongo-driver/x/mongo/driver/uuid"
"go.mongodb.org/mongo-driver/x/network/command"
"go.mongodb.org/mongo-driver/x/network/description"
"go.mongodb.org/mongo-driver/x/network/result"
)
// Insert handles the full cycle dispatch and execution of an insert command against the provided
// topology.
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) {
ss, err := topo.SelectServer(ctx, selector)
if err != nil {
return result.Insert{}, err
}
// If no explicit session and deployment supports sessions, start implicit session.
if cmd.Session == nil && topo.SupportsSessions() {
cmd.Session, err = session.NewClientSession(pool, clientID, session.Implicit)
if err != nil {
return result.Insert{}, err
}
defer cmd.Session.EndSession()
}
insertOpts := options.MergeInsertManyOptions(opts...)
if insertOpts.BypassDocumentValidation != nil && ss.Description().WireVersion.Includes(4) {
cmd.Opts = append(cmd.Opts, bsonx.Elem{"bypassDocumentValidation", bsonx.Boolean(*insertOpts.BypassDocumentValidation)})
}
if insertOpts.Ordered != nil {
cmd.Opts = append(cmd.Opts, bsonx.Elem{"ordered", bsonx.Boolean(*insertOpts.Ordered)})
}
// Execute in a single trip if retry writes not supported, or retry not enabled
if !retrySupported(topo, ss.Description(), cmd.Session, cmd.WriteConcern) || !retryWrite {
if cmd.Session != nil {
cmd.Session.RetryWrite = false // explicitly set to false to prevent encoding transaction number
}
return insert(ctx, &cmd, ss, nil)
}
// TODO figure out best place to put retry write. Command shouldn't have to know about this field.
cmd.Session.RetryWrite = retryWrite
cmd.Session.IncrementTxnNumber()
res, originalErr := insert(ctx, &cmd, ss, nil)
// Retry if appropriate
if cerr, ok := originalErr.(command.Error); (ok && cerr.Retryable()) ||
(res.WriteConcernError != nil && command.IsWriteConcernErrorRetryable(res.WriteConcernError)) {
ss, err := topo.SelectServer(ctx, selector)
// Return original error if server selection fails or new server does not support retryable writes
if err != nil || !retrySupported(topo, ss.Description(), cmd.Session, cmd.WriteConcern) {
return res, originalErr
}
return insert(ctx, &cmd, ss, cerr)
}
return res, originalErr
}
func insert(
ctx context.Context,
cmd *command.Insert,
ss *topology.SelectedServer,
oldErr error,
) (result.Insert, error) {
desc := ss.Description()
conn, err := ss.Connection(ctx)
if err != nil {
if oldErr != nil {
return result.Insert{}, oldErr
}
return result.Insert{}, err
}
if !writeconcern.AckWrite(cmd.WriteConcern) {
go func() {
defer func() { _ = recover() }()
defer conn.Close()
_, _ = cmd.RoundTrip(ctx, desc, conn)
}()
return result.Insert{}, command.ErrUnacknowledgedWrite
}
defer conn.Close()
res, err := cmd.RoundTrip(ctx, desc, conn)
ss.ProcessWriteConcernError(res.WriteConcernError)
return res, err
}