33 lines
1.1 KiB
Go
33 lines
1.1 KiB
Go
package main
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import (
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"fmt"
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"net/http"
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)
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func (app *application) recoverPanic(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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// Create a deferred function (which will always be run in the event of a panic
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// as Go unwinds the stack).
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defer func() {
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// Use the builtin recover function to check if there has been a panic or
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// not.
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if err := recover(); err != nil {
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// If there was a panic, set a "Connection: close" header on the
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// response. This acts as a trigger to make Go's HTTP server
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// automatically close the current connection after a response has been
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// sent.
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w.Header().Set("Connection", "close")
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// The value returned by recover() has the type interface{}, so we use
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// fmt.Errorf() to normalize it into an error and call our
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// serverErrorResponse() helper. In turn, this will log the error using
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// our custom Logger type at the ERROR level and send the client a 500
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// Internal Server Error response.
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app.serverErrorResponse(w, r, fmt.Errorf("%s", err))
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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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