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// Copyright (C) MongoDB, Inc. 2023-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 writeconcern_test
import (
"context"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
"go.mongodb.org/mongo-driver/mongo/writeconcern"
)
// Configure a Client with write concern "majority" that requests
// acknowledgement that a majority of the nodes have committed write operations.
func Example_majority() {
wc := writeconcern.Majority()
opts := options.Client().
ApplyURI("mongodb://localhost:27017").
SetWriteConcern(wc)
_, err := mongo.Connect(context.Background(), opts)
if err != nil {
panic(err)
}
}
// Configure a Client with a write concern that requests acknowledgement that
// exactly 2 nodes have committed and journaled write operations.
func Example_w2Journaled() {
wc := &writeconcern.WriteConcern{
W: 2,
Journal: boolPtr(true),
}
opts := options.Client().
ApplyURI("mongodb://localhost:27017").
SetWriteConcern(wc)
_, err := mongo.Connect(context.Background(), opts)
if err != nil {
panic(err)
}
}
// boolPtr is a helper function to convert a bool constant into a bool pointer.
//
// If you're using a version of Go that supports generics, you can define a
// generic version of this function that works with any type. For example:
//
// func ptr[T any](v T) *T {
// return &v
// }
func boolPtr(b bool) *bool {
return &b
}
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