54 lines
1.5 KiB
Go
54 lines
1.5 KiB
Go
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// Copyright (C) MongoDB, Inc. 2017-present.
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may
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// not use this file except in compliance with the License. You may obtain
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// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
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package event_test
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import (
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"context"
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"log"
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"go.mongodb.org/mongo-driver/bson"
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"go.mongodb.org/mongo-driver/event"
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"go.mongodb.org/mongo-driver/mongo"
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"go.mongodb.org/mongo-driver/mongo/options"
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)
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// Event examples
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// CommandMonitor represents a monitor that is triggered for different events.
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func ExampleCommandMonitor() {
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// If the application makes multiple concurrent requests, it would have to
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// use a concurrent map like sync.Map
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startedCommands := make(map[int64]bson.Raw)
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cmdMonitor := &event.CommandMonitor{
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Started: func(_ context.Context, evt *event.CommandStartedEvent) {
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startedCommands[evt.RequestID] = evt.Command
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},
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Succeeded: func(_ context.Context, evt *event.CommandSucceededEvent) {
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log.Printf("Command: %v Reply: %v\n",
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startedCommands[evt.RequestID],
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evt.Reply,
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)
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},
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Failed: func(_ context.Context, evt *event.CommandFailedEvent) {
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log.Printf("Command: %v Failure: %v\n",
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startedCommands[evt.RequestID],
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evt.Failure,
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)
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},
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}
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clientOpts := options.Client().ApplyURI("mongodb://localhost:27017").SetMonitor(cmdMonitor)
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client, err := mongo.Connect(context.Background(), clientOpts)
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if err != nil {
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log.Fatal(err)
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}
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defer func() {
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if err = client.Disconnect(context.TODO()); err != nil {
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log.Fatal(err)
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}
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}()
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}
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