mongo

Documentation

Overview

Package mongo provides functions to trace the mongodb/mongo-go-driver package (https://github.com/mongodb/mongo-go-driver). It support v0.2.0 of github.com/mongodb/mongo-go-driver

`NewMonitor` will return an event.CommandMonitor which is used to trace requests.

Example

package main

import (
	"context"

	"github.com/mongodb/mongo-go-driver/bson"
	"github.com/mongodb/mongo-go-driver/mongo"
	"github.com/mongodb/mongo-go-driver/mongo/options"

	mongotrace "gopkg.in/DataDog/dd-trace-go.v1/contrib/mongodb/mongo-go-driver/mongo"
)

func main() {
	// connect to MongoDB
	opts := options.Client()
	opts.SetMonitor(mongotrace.NewMonitor())
	client, err := mongo.Connect(context.Background(), "mongodb://localhost:27017", opts)
	if err != nil {
		panic(err)
	}
	db := client.Database("example")
	inventory := db.Collection("inventory")

	inventory.InsertOne(context.Background(), bson.D{
		{Key: "item", Value: "canvas"},
		{Key: "qty", Value: 100},
		{Key: "tags", Value: bson.A{"cotton"}},
		{Key: "size", Value: bson.D{
			{Key: "h", Value: 28},
			{Key: "w", Value: 35.5},
			{Key: "uom", Value: "cm"},
		}},
	})
}

Index

• func NewMonitor(opts ...Option) *event.CommandMonitor
• type Option
  • func WithAnalytics(on bool) Option
  • func WithAnalyticsRate(rate float64) Option
  • func WithServiceName(name string) Option

Examples

• Package

Functions

func NewMonitor

func NewMonitor(opts ...Option) *event.CommandMonitor

NewMonitor creates a new mongodb event CommandMonitor.

Types

type Option

type Option func(*config)

Option represents an option that can be passed to Dial.

func WithAnalytics

func WithAnalytics(on bool) Option

WithAnalytics enables Trace Analytics for all started spans.

func WithAnalyticsRate

func WithAnalyticsRate(rate float64) Option

WithAnalyticsRate sets the sampling rate for Trace Analytics events correlated to started spans.

func WithServiceName

func WithServiceName(name string) Option

WithServiceName sets the given service name for the dialled connection. When the service name is not explicitly set it will be inferred based on the request to AWS.