gloo/telemetry

Event hooks for observability. Attach a handler with telemetry.with_handler and pass the resulting Telemetry value to repo.with_telemetry.

Events: QueryStart, QueryEnd, QueryError, TransactionStart, TransactionCommit, TransactionRollback.

Types

Event

</>

pub type Event {
  QueryStart(sql: String, params_count: Int)
  QueryEnd(sql: String, duration_ms: Int, rows: Int)
  QueryError(sql: String, reason: String)
  TransactionStart
  TransactionCommit
  TransactionRollback
}

Constructors

QueryStart(sql: String, params_count: Int)

QueryEnd(sql: String, duration_ms: Int, rows: Int)

```
QueryError(sql: String, reason: String)
```
```
TransactionStart
```
```
TransactionCommit
```
```
TransactionRollback
```

Handler

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pub type Handler =
  fn(Event) -> Nil

Telemetry

</>

pub type Telemetry {
  Telemetry(handler: option.Option(fn(Event) -> Nil))
}

Constructors

Telemetry(handler: option.Option(fn(Event) -> Nil))

Values

disabled

</>

pub fn disabled() -> Telemetry

emit

</>

pub fn emit(telemetry: Telemetry, event: Event) -> Nil

with_handler

</>

pub fn with_handler(handler: fn(Event) -> Nil) -> Telemetry