mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-11-26 21:56:39 +00:00
119 lines
3.7 KiB
Markdown
119 lines
3.7 KiB
Markdown
[](https://pkg.go.dev/github.com/uptrace/opentelemetry-go-extra/otelsql)
|
|
|
|
# database/sql instrumentation for OpenTelemetry Go
|
|
|
|
[database/sql OpenTelemetry instrumentation](https://uptrace.dev/opentelemetry/instrumentations/go-database-sql.html)
|
|
records database queries (including `Tx` and `Stmt` queries) and reports `DBStats` metrics.
|
|
|
|
## Installation
|
|
|
|
```shell
|
|
go get github.com/uptrace/opentelemetry-go-extra/otelsql
|
|
```
|
|
|
|
## Usage
|
|
|
|
To instrument database/sql, you need to connect to a database using the API provided by otelsql:
|
|
|
|
| sql | otelsql |
|
|
| --------------------------- | ------------------------------- |
|
|
| `sql.Open(driverName, dsn)` | `otelsql.Open(driverName, dsn)` |
|
|
| `sql.OpenDB(connector)` | `otelsql.OpenDB(connector)` |
|
|
|
|
```go
|
|
import (
|
|
"github.com/uptrace/opentelemetry-go-extra/otelsql"
|
|
semconv "go.opentelemetry.io/otel/semconv/v1.10.0"
|
|
)
|
|
|
|
db, err := otelsql.Open("sqlite", "file::memory:?cache=shared",
|
|
otelsql.WithAttributes(semconv.DBSystemSqlite),
|
|
otelsql.WithDBName("mydb"))
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
// db is *sql.DB
|
|
```
|
|
|
|
And then use context-aware API to propagate the active span via
|
|
[context](https://uptrace.dev/opentelemetry/go-tracing.html#context):
|
|
|
|
```go
|
|
var num int
|
|
if err := db.QueryRowContext(ctx, "SELECT 42").Scan(&num); err != nil {
|
|
panic(err)
|
|
}
|
|
```
|
|
|
|
See [example](/example/) for details.
|
|
|
|
## Options
|
|
|
|
Both [otelsql.Open](https://pkg.go.dev/github.com/uptrace/opentelemetry-go-extra/otelsql#Open) and
|
|
[otelsql.OpenDB](https://pkg.go.dev/github.com/uptrace/opentelemetry-go-extra/otelsql#OpenDB) accept
|
|
the same [options](https://pkg.go.dev/github.com/uptrace/opentelemetry-go-extra/otelsql#Option):
|
|
|
|
- [WithAttributes](https://pkg.go.dev/github.com/uptrace/opentelemetry-go-extra/otelsql#WithAttributes)
|
|
configures attributes that are used to create a span.
|
|
- [WithDBName](https://pkg.go.dev/github.com/uptrace/opentelemetry-go-extra/otelsql#WithDBName)
|
|
configures a `db.name` attribute.
|
|
- [WithDBSystem](https://pkg.go.dev/github.com/uptrace/opentelemetry-go-extra/otelsql#WithDBSystem)
|
|
configures a `db.system` attribute. When possible, you should prefer using WithAttributes and
|
|
[semconv](https://pkg.go.dev/go.opentelemetry.io/otel/semconv/v1.10.0), for example,
|
|
`otelsql.WithAttributes(semconv.DBSystemSqlite)`.
|
|
|
|
## sqlboiler
|
|
|
|
You can use otelsql to instrument [sqlboiler](https://github.com/volatiletech/sqlboiler) ORM:
|
|
|
|
```go
|
|
import (
|
|
"github.com/uptrace/opentelemetry-go-extra/otelsql"
|
|
semconv "go.opentelemetry.io/otel/semconv/v1.10.0"
|
|
)
|
|
|
|
db, err := otelsql.Open("postgres", "dbname=fun user=abc",
|
|
otelsql.WithAttributes(semconv.DBSystemPostgreSQL))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
boil.SetDB(db)
|
|
```
|
|
|
|
## GORM 1
|
|
|
|
You can use otelsql to instrument [GORM 1](https://v1.gorm.io/):
|
|
|
|
```go
|
|
import (
|
|
"github.com/jinzhu/gorm"
|
|
"github.com/uptrace/opentelemetry-go-extra/otelsql"
|
|
semconv "go.opentelemetry.io/otel/semconv/v1.10.0"
|
|
)
|
|
|
|
// gormOpen is like gorm.Open, but it uses otelsql to instrument the database.
|
|
func gormOpen(driverName, dataSourceName string, opts ...otelsql.Option) (*gorm.DB, error) {
|
|
db, err := otelsql.Open(driverName, dataSourceName, opts...)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return gorm.Open(driverName, db)
|
|
}
|
|
|
|
db, err := gormOpen("mysql", "user:password@/dbname",
|
|
otelsql.WithAttributes(semconv.DBSystemMySQL))
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
```
|
|
|
|
To instrument GORM 2, use
|
|
[otelgorm](https://github.com/uptrace/opentelemetry-go-extra/tree/main/otelgorm).
|
|
|
|
## Alternatives
|
|
|
|
- https://github.com/XSAM/otelsql - different driver registration and no metrics.
|
|
- https://github.com/j2gg0s/otsql - like XSAM/otelsql but with Prometheus metrics.
|