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Revert "fix: remove obsolete blank prints (GoogleCloudPlatform#144)" #157

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merged 2 commits into from
Aug 23, 2022
Merged

Revert "fix: remove obsolete blank prints (GoogleCloudPlatform#144)" #157

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Revert "fix: remove obsolete blank prints (GoogleCloudPlatform#144)"
anniefu Aug 23, 2022
e82cd1d
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anniefu Aug 23, 2022
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18 changes: 18 additions & 0 deletions funcframework/framework.go
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Original file line number Diff line number Diff line change
Expand Up @@ -174,6 +174,11 @@ func wrapFunction(fn *registry.RegisteredFunction) (http.Handler, error) {

func wrapHTTPFunction(fn func(http.ResponseWriter, *http.Request)) (http.Handler, error) {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if os.Getenv("K_SERVICE") != "" {
// Force flush of logs after every function trigger when running on GCF.
defer fmt.Println()
defer fmt.Fprintln(os.Stderr)
}
defer recoverPanic(w, "user function execution")
fn(w, r)
}), nil
Expand All @@ -185,6 +190,12 @@ func wrapEventFunction(fn interface{}) (http.Handler, error) {
return nil, err
}
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if os.Getenv("K_SERVICE") != "" {
// Force flush of logs after every function trigger when running on GCF.
defer fmt.Println()
defer fmt.Fprintln(os.Stderr)
}

if shouldConvertCloudEventToBackgroundRequest(r) {
if err := convertCloudEventToBackgroundRequest(r); err != nil {
writeHTTPErrorResponse(w, http.StatusBadRequest, crashStatus, fmt.Sprintf("error converting CloudEvent to Background Event: %v", err))
Expand Down Expand Up @@ -289,6 +300,13 @@ func writeHTTPErrorResponse(w http.ResponseWriter, statusCode int, status, msg s
}
fmt.Fprint(os.Stderr, msg)

// Flush stdout and stderr when running on GCF. This must be done before writing
// the HTTP response in order for all logs to appear in GCF.
if os.Getenv("K_SERVICE") != "" {
fmt.Println()
fmt.Fprintln(os.Stderr)
}

w.Header().Set(functionStatusHeader, status)
w.WriteHeader(statusCode)
fmt.Fprint(w, msg)
Expand Down