28 lines
792 B
Go
28 lines
792 B
Go
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package mw
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import (
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"net/http"
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"runtime/debug"
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"code.nochebuena.dev/einherjar/contracts/logging"
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)
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// Recover catches panics in downstream handlers, writes a 500 response, and
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// logs the recovered value with a stack trace. Place it as the outermost middleware.
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func Recover(logger logging.Logger) func(http.Handler) http.Handler {
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return func(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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defer func() {
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if rec := recover(); rec != nil {
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logger.WithContext(r.Context()).Error("recover: panic", nil,
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"panic", rec,
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"stack", string(debug.Stack()),
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)
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http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
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}
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}()
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next.ServeHTTP(w, r)
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})
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}
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}
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