Show more info when recovering from panic

Author: danielgtaylor

apisprout.go

@@ -3,7 +3,6 @@ package main
 import (
 	"context"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"io/ioutil"
 	"log"
@@ -21,6 +20,7 @@ import (
 	"github.com/getkin/kin-openapi/openapi3"
 	"github.com/getkin/kin-openapi/openapi3filter"
 	"github.com/gobwas/glob"
+	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
 	"github.com/spf13/viper"
@@ -221,7 +221,11 @@ func load(uri string, data []byte) (swagger *openapi3.Swagger, router *openapi3f
 		if r := recover(); r != nil {
 			swagger = nil
 			router = nil
-			err = fmt.Errorf("Caught panic while trying to load")
+			if e, ok := r.(error); ok {
+				err = errors.Wrap(e, "Caught panic while trying to load")
+			} else {
+				err = fmt.Errorf("Caught panic while trying to load")
+			}
 		}
 	}()
 

go.mod

@@ -15,6 +15,7 @@ require (
 	github.com/magiconair/properties v1.8.0
 	github.com/mitchellh/mapstructure v1.1.2
 	github.com/pelletier/go-toml v1.2.0
+	github.com/pkg/errors v0.8.1
 	github.com/pmezard/go-difflib v1.0.0
 	github.com/spf13/afero v1.2.1
 	github.com/spf13/cast v1.3.0

go.sum

@@ -34,6 +34,8 @@ github.com/mitchellh/mapstructure v1.1.2 h1:fmNYVwqnSfB9mZU6OS2O6GsXM+wcskZDuKQz
 github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
 github.com/pelletier/go-toml v1.2.0 h1:T5zMGML61Wp+FlcbWjRDT7yAxhJNAiPPLOFECq181zc=
 github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
+github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
+github.com/pkg/errors v0.8.1/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=
 github.com/spf13/afero v1.1.2 h1:m8/z1t7/fwjysjQRYbP0RD+bUIF/8tJwPdEZsI83ACI=