Safe Haskell	None
Language	Haskell2010

Hasura.Server.Prometheus

Description

Mutable references for Prometheus metrics.

These metrics are independent from the metrics in Hasura.Server.Metrics.

Synopsis

data PrometheusMetrics = PrometheusMetrics {
- pmConnections :: ConnectionsGauge
- pmActiveSubscriptions :: Gauge
- pmGraphQLRequestMetrics :: GraphQLRequestMetrics
- pmEventTriggerMetrics :: EventTriggerMetrics
}
data GraphQLRequestMetrics = GraphQLRequestMetrics {
- gqlRequestsQuerySuccess :: Counter
- gqlRequestsQueryFailure :: Counter
- gqlRequestsMutationSuccess :: Counter
- gqlRequestsMutationFailure :: Counter
- gqlRequestsUnknownFailure :: Counter
- gqlExecutionTimeSecondsQuery :: Histogram
- gqlExecutionTimeSecondsMutation :: Histogram
}
data EventTriggerMetrics = EventTriggerMetrics {
- eventTriggerHTTPWorkers :: Gauge
- eventQueueTimeSeconds :: Histogram
}
makeDummyPrometheusMetrics :: IO PrometheusMetrics
makeDummyGraphQLRequestMetrics :: IO GraphQLRequestMetrics
makeDummyEventTriggerMetrics :: IO EventTriggerMetrics
newtype ConnectionsGauge = ConnectionsGauge (IORef Connections)
data Connections = Connections {
- connWarpThreads :: Int64
- connWebsockets :: Int64
}
newConnectionsGauge :: IO ConnectionsGauge
readConnectionsGauge :: ConnectionsGauge -> IO Connections
incWarpThreads :: ConnectionsGauge -> IO ()
decWarpThreads :: ConnectionsGauge -> IO ()
incWebsocketConnections :: ConnectionsGauge -> IO ()
decWebsocketConnections :: ConnectionsGauge -> IO ()
modifyConnectionsGauge :: (Connections -> Connections) -> ConnectionsGauge -> IO ()

Documentation

data PrometheusMetrics Source #

Mutable references for Prometheus metrics.

Constructors

PrometheusMetrics
Fields pmConnections :: ConnectionsGauge pmActiveSubscriptions :: Gauge pmGraphQLRequestMetrics :: GraphQLRequestMetrics pmEventTriggerMetrics :: EventTriggerMetrics

data GraphQLRequestMetrics Source #

Constructors

GraphQLRequestMetrics
Fields gqlRequestsQuerySuccess :: Counter gqlRequestsQueryFailure :: Counter gqlRequestsMutationSuccess :: Counter gqlRequestsMutationFailure :: Counter gqlRequestsUnknownFailure :: Counter gqlExecutionTimeSecondsQuery :: Histogram gqlExecutionTimeSecondsMutation :: Histogram

data EventTriggerMetrics Source #

Constructors

EventTriggerMetrics
Fields eventTriggerHTTPWorkers :: Gauge eventQueueTimeSeconds :: Histogram

makeDummyPrometheusMetrics :: IO PrometheusMetrics Source #

Create dummy mutable references without associating them to a metrics store.

makeDummyGraphQLRequestMetrics :: IO GraphQLRequestMetrics Source #

makeDummyEventTriggerMetrics :: IO EventTriggerMetrics Source #

newtype ConnectionsGauge Source #

A mutable reference for atomically sampling the number of websocket connections and number of threads forked by the warp webserver.

Because we derive the number of (non-websocket) HTTP connections by the difference of these two metrics, we must sample them simultaneously, otherwise we might report a negative number of HTTP connections.

Constructors

ConnectionsGauge (IORef Connections)

data Connections Source #

Constructors

Connections
Fields connWarpThreads :: Int64 connWebsockets :: Int64

newConnectionsGauge :: IO ConnectionsGauge Source #

readConnectionsGauge :: ConnectionsGauge -> IO Connections Source #

incWarpThreads :: ConnectionsGauge -> IO () Source #

decWarpThreads :: ConnectionsGauge -> IO () Source #

incWebsocketConnections :: ConnectionsGauge -> IO () Source #

decWebsocketConnections :: ConnectionsGauge -> IO () Source #

modifyConnectionsGauge :: (Connections -> Connections) -> ConnectionsGauge -> IO () Source #