/
example_test.go
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/
example_test.go
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// Unless explicitly stated otherwise all files in this repository are licensed
// under the Apache License Version 2.0.
// This product includes software developed at Datadog (https://www.datadoghq.com/).
// Copyright 2016 Datadog, Inc.
package gorm_test
import (
"context"
"log"
sqltrace "gopkg.in/DataDog/dd-trace-go.v1/contrib/database/sql"
gormtrace "gopkg.in/DataDog/dd-trace-go.v1/contrib/gorm.io/gorm.v1"
"gopkg.in/DataDog/dd-trace-go.v1/ddtrace/ext"
"gopkg.in/DataDog/dd-trace-go.v1/ddtrace/tracer"
"github.com/jackc/pgx/v4/stdlib"
"gorm.io/driver/postgres"
"gorm.io/gorm"
)
type User struct {
gorm.Model
Name string
}
func ExampleOpen() {
// Register augments the provided driver with tracing, enabling it to be loaded by gormtrace.Open.
sqltrace.Register("pgx", &stdlib.Driver{}, sqltrace.WithServiceName("my-service"))
sqlDb, err := sqltrace.Open("pgx", "postgres://pqgotest:password@localhost/pqgotest?sslmode=disable")
if err != nil {
log.Fatal(err)
}
db, err := gormtrace.Open(postgres.New(postgres.Config{Conn: sqlDb}), &gorm.Config{})
if err != nil {
log.Fatal(err)
}
var user User
// All calls through gorm.DB are now traced.
db.Where("name = ?", "jinzhu").First(&user)
}
func ExampleContext() {
// Register augments the provided driver with tracing, enabling it to be loaded by gormtrace.Open.
sqltrace.Register("pgx", &stdlib.Driver{}, sqltrace.WithServiceName("my-service"))
sqlDb, err := sqltrace.Open("pgx", "postgres://pqgotest:password@localhost/pqgotest?sslmode=disable")
if err != nil {
log.Fatal(err)
}
db, err := gormtrace.Open(postgres.New(postgres.Config{Conn: sqlDb}), &gorm.Config{})
if err != nil {
log.Fatal(err)
}
var user User
// Create a root span, giving name, server and resource.
span, ctx := tracer.StartSpanFromContext(context.Background(), "my-query",
tracer.SpanType(ext.SpanTypeSQL),
tracer.ServiceName("my-db"),
tracer.ResourceName("initial-access"),
)
defer span.Finish()
// Subsequent spans inherit their parent from context.
db.WithContext(ctx).Where("name = ?", "jinzhu").First(&user)
}