Wrap error when creating prometheus middleware

Signed-off-by: Paul Farver <[email protected]>
PaulFarver · Dec 14, 2021 · 1434cc3 · 1434cc3
1 parent 13d9fbd
commit 1434cc3
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Showing 3 changed files with 4 additions and 1 deletion.
diff --git a/go.mod b/go.mod
@@ -5,6 +5,7 @@ go 1.16
 require (
 	github.com/labstack/echo/v4 v4.6.1
 	github.com/labstack/gommon v0.3.1
+	github.com/pkg/errors v0.9.1
 	github.com/prometheus/client_golang v1.11.0
 	github.com/sirupsen/logrus v1.8.1
 )
diff --git a/go.sum b/go.sum
@@ -77,6 +77,7 @@ github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRW
 github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=

diff --git a/middleware/prometheus.go b/middleware/prometheus.go
@@ -7,6 +7,7 @@ import (
 
 	"github.com/labstack/echo/v4"
 	"github.com/labstack/echo/v4/middleware"
+	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 )
@@ -65,7 +66,7 @@ func PrometheusWithConfig(config PrometheusConfig) (echo.MiddlewareFunc, error)
 	requestHistogram := prometheus.NewHistogramVec(config.HistogramOpts, []string{"status", "path"})
 	err := config.Registerer.Register(requestHistogram)
 	if err != nil {
-		return nil, err
+		return nil, errors.Wrap(err, "Failed to register request histogram")
 	}
 
 	return func(next echo.HandlerFunc) echo.HandlerFunc {