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error.go
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/
error.go
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package middleware
import (
"log"
"runtime"
"github.com/neptulon/neptulon"
)
// Error is an error/panic handler middleware.
// Any error/panic is recovered and logged and the error response is returned to the user (auto-generated if none was set).
func Error(ctx *neptulon.ReqCtx) error {
errored := false
if err := ctx.Next(); err != nil {
errored = true
log.Printf("mw: error: error handling response: %v", err)
}
if err := recover(); err != nil {
errored = true
const size = 64 << 10
buf := make([]byte, size)
buf = buf[:runtime.Stack(buf, false)]
log.Printf("mw: error: panic handling response: %v\nstack trace: %s", err, buf)
}
if errored {
if ctx.Err == nil {
ctx.Err = &neptulon.ResError{
Code: 500,
Message: "Internal server error.",
}
}
return ctx.Next()
}
return nil
}