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bfd046b224
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/9332 GitOrigin-RevId: ecde2383a42acf93fa8c6abb8bbd4c3b074b77fb
58 lines
2.3 KiB
Haskell
58 lines
2.3 KiB
Haskell
-- | This module contains a collection of utility functions we use with tracing
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-- throughout the codebase, but that are not a core part of the library. If we
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-- were to move tracing to a separate library, those functions should be kept
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-- here in the core engine code.
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module Hasura.Tracing.Utils
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( traceHTTPRequest,
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attachSourceConfigAttributes,
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)
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where
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import Control.Lens
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import Data.String
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import Data.Text.Extended (toTxt)
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import Hasura.Prelude
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import Hasura.RQL.Types.SourceConfiguration (HasSourceConfiguration (..))
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import Hasura.Tracing.Class
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import Hasura.Tracing.Context
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import Hasura.Tracing.Sampling
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import Hasura.Tracing.TraceId
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import Network.HTTP.Client.Transformable qualified as HTTP
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-- | Wrap the execution of an HTTP request in a span in the current
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-- trace. Despite its name, this function does not start a new trace, and the
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-- span will therefore not be recorded if the surrounding context isn't traced
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-- (see 'spanWith').
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--
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-- Additionally, this function adds metadata regarding the request to the
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-- created span, and injects the trace context into the HTTP header.
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traceHTTPRequest ::
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(MonadIO m, MonadTrace m) =>
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-- | http request that needs to be made
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HTTP.Request ->
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-- | a function that takes the traced request and executes it
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(HTTP.Request -> m a) ->
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m a
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traceHTTPRequest req f = do
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let method = bsToTxt (view HTTP.method req)
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uri = view HTTP.url req
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newSpan (method <> " " <> uri) do
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let reqBytes = HTTP.getReqSize req
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attachMetadata [("request_body_bytes", fromString (show reqBytes))]
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headers <- fmap (maybe [] toHeaders) currentContext
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f $ over HTTP.headers (headers <>) req
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where
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toHeaders :: TraceContext -> [HTTP.Header]
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toHeaders TraceContext {..} =
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catMaybes
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[ Just ("X-B3-TraceId", traceIdToHex tcCurrentTrace),
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Just ("X-B3-SpanId", spanIdToHex tcCurrentSpan),
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("X-B3-ParentSpanId",) . spanIdToHex <$> tcCurrentParent,
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("X-B3-Sampled",) <$> samplingStateToHeader tcSamplingState
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]
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attachSourceConfigAttributes :: forall b m. (HasSourceConfiguration b, MonadTrace m) => SourceConfig b -> m ()
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attachSourceConfigAttributes sourceConfig = do
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let backendSourceKind = sourceConfigBackendSourceKind @b sourceConfig
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attachMetadata [("source.kind", toTxt $ backendSourceKind)]
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