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Refactor httpErrors

This commit is contained in:
Aleksey Dmitrevskiy 2019-02-27 17:28:10 +03:00
parent 5ba43a59f4
commit 523c5ef10a
1 changed files with 55 additions and 151 deletions
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206
control.go
View File

@ -51,9 +51,7 @@ var client = &http.Client{
func returnOK(w http.ResponseWriter) { func returnOK(w http.ResponseWriter) {
_, err := fmt.Fprintf(w, "OK\n") _, err := fmt.Fprintf(w, "OK\n")
if err != nil { if err != nil {
errorText := fmt.Sprintf("Couldn't write body: %s", err) httpError(w, http.StatusInternalServerError, "Couldn't write body: %s", err)
log.Println(errorText)
http.Error(w, errorText, http.StatusInternalServerError)
} }
} }
@ -101,17 +99,13 @@ func handleStatus(w http.ResponseWriter, r *http.Request) {
jsonVal, err := json.Marshal(data) jsonVal, err := json.Marshal(data)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Unable to marshal status json: %s", err) httpError(w, http.StatusInternalServerError, "Unable to marshal status json: %s", err)
log.Println(errorText)
http.Error(w, errorText, 500)
return return
} }
w.Header().Set("Content-Type", "application/json") w.Header().Set("Content-Type", "application/json")
_, err = w.Write(jsonVal) _, err = w.Write(jsonVal)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Unable to write response json: %s", err) httpError(w, http.StatusInternalServerError, "Unable to write response json: %s", err)
log.Println(errorText)
http.Error(w, errorText, 500)
return return
} }
} }
@ -144,18 +138,14 @@ func handleQueryLog(w http.ResponseWriter, r *http.Request) {
jsonVal, err := json.Marshal(data) jsonVal, err := json.Marshal(data)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Couldn't marshal data into json: %s", err) httpError(w, http.StatusInternalServerError, "Couldn't marshal data into json: %s", err)
log.Println(errorText)
http.Error(w, errorText, http.StatusInternalServerError)
return return
} }
w.Header().Set("Content-Type", "application/json") w.Header().Set("Content-Type", "application/json")
_, err = w.Write(jsonVal) _, err = w.Write(jsonVal)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Unable to write response json: %s", err) httpError(w, http.StatusInternalServerError, "Unable to write response json: %s", err)
log.Println(errorText)
http.Error(w, errorText, http.StatusInternalServerError)
} }
} }
@ -200,9 +190,7 @@ func handleStatsTop(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json") w.Header().Set("Content-Type", "application/json")
_, err := w.Write(statsJSON.Bytes()) _, err := w.Write(statsJSON.Bytes())
if err != nil { if err != nil {
errorText := fmt.Sprintf("Couldn't write body: %s", err) httpError(w, http.StatusInternalServerError, "Couldn't write body: %s", err)
log.Println(errorText)
http.Error(w, errorText, http.StatusInternalServerError)
} }
} }
@ -211,9 +199,7 @@ func handleStatsReset(w http.ResponseWriter, r *http.Request) {
dnsServer.PurgeStats() dnsServer.PurgeStats()
_, err := fmt.Fprintf(w, "OK\n") _, err := fmt.Fprintf(w, "OK\n")
if err != nil { if err != nil {
errorText := fmt.Sprintf("Couldn't write body: %s", err) httpError(w, http.StatusInternalServerError, "Couldn't write body: %s", err)
log.Println(errorText)
http.Error(w, errorText, http.StatusInternalServerError)
} }
} }
@ -223,17 +209,13 @@ func handleStats(w http.ResponseWriter, r *http.Request) {
statsJSON, err := json.Marshal(summed) statsJSON, err := json.Marshal(summed)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Unable to marshal status json: %s", err) httpError(w, http.StatusInternalServerError, "Unable to marshal status json: %s", err)
log.Println(errorText)
http.Error(w, errorText, 500)
return return
} }
w.Header().Set("Content-Type", "application/json") w.Header().Set("Content-Type", "application/json")
_, err = w.Write(statsJSON) _, err = w.Write(statsJSON)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Unable to write response json: %s", err) httpError(w, http.StatusInternalServerError, "Unable to write response json: %s", err)
log.Println(errorText)
http.Error(w, errorText, 500)
return return
} }
} }
@ -260,40 +242,31 @@ func handleStatsHistory(w http.ResponseWriter, r *http.Request) {
// parse start and end time // parse start and end time
startTime, err := time.Parse(time.RFC3339, r.URL.Query().Get("start_time")) startTime, err := time.Parse(time.RFC3339, r.URL.Query().Get("start_time"))
if err != nil { if err != nil {
errorText := fmt.Sprintf("Must specify valid start_time parameter: %s", err) httpError(w, http.StatusBadRequest, "Must specify valid start_time parameter: %s", err)
log.Println(errorText)
http.Error(w, errorText, http.StatusBadRequest)
return return
} }
endTime, err := time.Parse(time.RFC3339, r.URL.Query().Get("end_time")) endTime, err := time.Parse(time.RFC3339, r.URL.Query().Get("end_time"))
if err != nil { if err != nil {
errorText := fmt.Sprintf("Must specify valid end_time parameter: %s", err) httpError(w, http.StatusBadRequest, "Must specify valid end_time parameter: %s", err)
log.Println(errorText)
http.Error(w, errorText, http.StatusBadRequest)
return return
} }
data, err := dnsServer.GetStatsHistory(timeUnit, startTime, endTime) data, err := dnsServer.GetStatsHistory(timeUnit, startTime, endTime)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Cannot get stats history: %s", err) httpError(w, http.StatusBadRequest, "Cannot get stats history: %s", err)
http.Error(w, errorText, http.StatusBadRequest)
return return
} }
statsJSON, err := json.Marshal(data) statsJSON, err := json.Marshal(data)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Unable to marshal status json: %s", err) httpError(w, http.StatusInternalServerError, "Unable to marshal status json: %s", err)
log.Println(errorText)
http.Error(w, errorText, http.StatusInternalServerError)
return return
} }
w.Header().Set("Content-Type", "application/json") w.Header().Set("Content-Type", "application/json")
_, err = w.Write(statsJSON) _, err = w.Write(statsJSON)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Unable to write response json: %s", err) httpError(w, http.StatusInternalServerError, "Unable to write response json: %s", err)
log.Println(errorText)
http.Error(w, errorText, http.StatusInternalServerError)
return return
} }
} }
@ -326,9 +299,7 @@ func sortByValue(m map[string]int) []string {
func handleSetUpstreamDNS(w http.ResponseWriter, r *http.Request) { func handleSetUpstreamDNS(w http.ResponseWriter, r *http.Request) {
body, err := ioutil.ReadAll(r.Body) body, err := ioutil.ReadAll(r.Body)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Failed to read request body: %s", err) httpError(w, http.StatusBadRequest, "Failed to read request body: %s", err)
log.Println(errorText)
http.Error(w, errorText, http.StatusBadRequest)
return return
} }
// if empty body -- user is asking for default servers // if empty body -- user is asking for default servers
@ -342,23 +313,17 @@ func handleSetUpstreamDNS(w http.ResponseWriter, r *http.Request) {
err = writeAllConfigs() err = writeAllConfigs()
if err != nil { if err != nil {
errorText := fmt.Sprintf("Couldn't write config file: %s", err) httpError(w, http.StatusInternalServerError, "Couldn't write config file: %s", err)
log.Println(errorText)
http.Error(w, errorText, http.StatusInternalServerError)
return return
} }
err = reconfigureDNSServer() err = reconfigureDNSServer()
if err != nil { if err != nil {
errorText := fmt.Sprintf("Couldn't reconfigure the DNS server: %s", err) httpError(w, http.StatusInternalServerError, "Couldn't reconfigure the DNS server: %s", err)
log.Println(errorText)
http.Error(w, errorText, http.StatusInternalServerError)
return return
} }
_, err = fmt.Fprintf(w, "OK %d servers\n", len(hosts)) _, err = fmt.Fprintf(w, "OK %d servers\n", len(hosts))
if err != nil { if err != nil {
errorText := fmt.Sprintf("Couldn't write body: %s", err) httpError(w, http.StatusInternalServerError, "Couldn't write body: %s", err)
log.Println(errorText)
http.Error(w, errorText, http.StatusInternalServerError)
} }
} }
@ -378,18 +343,14 @@ func handleAllServersStatus(w http.ResponseWriter, r *http.Request) {
} }
jsonVal, err := json.Marshal(data) jsonVal, err := json.Marshal(data)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Unable to marshal status json: %s", err) httpError(w, http.StatusInternalServerError, "Unable to marshal status json: %s", err)
log.Println(errorText)
http.Error(w, errorText, 500)
return return
} }
w.Header().Set("Content-Type", "application/json") w.Header().Set("Content-Type", "application/json")
_, err = w.Write(jsonVal) _, err = w.Write(jsonVal)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Unable to write response json: %s", err) httpError(w, http.StatusInternalServerError, "Unable to write response json: %s", err)
log.Println(errorText)
http.Error(w, errorText, 500)
return return
} }
} }
@ -397,17 +358,13 @@ func handleAllServersStatus(w http.ResponseWriter, r *http.Request) {
func handleTestUpstreamDNS(w http.ResponseWriter, r *http.Request) { func handleTestUpstreamDNS(w http.ResponseWriter, r *http.Request) {
body, err := ioutil.ReadAll(r.Body) body, err := ioutil.ReadAll(r.Body)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Failed to read request body: %s", err) httpError(w, http.StatusBadRequest, "Failed to read request body: %s", err)
log.Println(errorText)
http.Error(w, errorText, 400)
return return
} }
hosts := strings.Fields(string(body)) hosts := strings.Fields(string(body))
if len(hosts) == 0 { if len(hosts) == 0 {
errorText := fmt.Sprintf("No servers specified") httpError(w, http.StatusBadRequest, "No servers specified")
log.Println(errorText)
http.Error(w, errorText, http.StatusBadRequest)
return return
} }
@ -425,18 +382,14 @@ func handleTestUpstreamDNS(w http.ResponseWriter, r *http.Request) {
jsonVal, err := json.Marshal(result) jsonVal, err := json.Marshal(result)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Unable to marshal status json: %s", err) httpError(w, http.StatusInternalServerError, "Unable to marshal status json: %s", err)
log.Println(errorText)
http.Error(w, errorText, http.StatusInternalServerError)
return return
} }
w.Header().Set("Content-Type", "application/json") w.Header().Set("Content-Type", "application/json")
_, err = w.Write(jsonVal) _, err = w.Write(jsonVal)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Couldn't write body: %s", err) httpError(w, http.StatusInternalServerError, "Couldn't write body: %s", err)
log.Println(errorText)
http.Error(w, errorText, http.StatusInternalServerError)
} }
} }
@ -481,9 +434,7 @@ func handleGetVersionJSON(w http.ResponseWriter, r *http.Request) {
resp, err := client.Get(versionCheckURL) resp, err := client.Get(versionCheckURL)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Couldn't get version check json from %s: %T %s\n", versionCheckURL, err, err) httpError(w, http.StatusBadGateway, "Couldn't get version check json from %s: %T %s\n", versionCheckURL, err, err)
log.Println(errorText)
http.Error(w, errorText, http.StatusBadGateway)
return return
} }
if resp != nil && resp.Body != nil { if resp != nil && resp.Body != nil {
@ -493,18 +444,14 @@ func handleGetVersionJSON(w http.ResponseWriter, r *http.Request) {
// read the body entirely // read the body entirely
body, err := ioutil.ReadAll(resp.Body) body, err := ioutil.ReadAll(resp.Body)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Couldn't read response body from %s: %s", versionCheckURL, err) httpError(w, http.StatusBadGateway, "Couldn't read response body from %s: %s", versionCheckURL, err)
log.Println(errorText)
http.Error(w, errorText, http.StatusBadGateway)
return return
} }
w.Header().Set("Content-Type", "application/json") w.Header().Set("Content-Type", "application/json")
_, err = w.Write(body) _, err = w.Write(body)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Couldn't write body: %s", err) httpError(w, http.StatusInternalServerError, "Couldn't write body: %s", err)
log.Println(errorText)
http.Error(w, errorText, http.StatusInternalServerError)
} }
versionCheckLastTime = now versionCheckLastTime = now
@ -537,18 +484,14 @@ func handleFilteringStatus(w http.ResponseWriter, r *http.Request) {
config.RUnlock() config.RUnlock()
if err != nil { if err != nil {
errorText := fmt.Sprintf("Unable to marshal status json: %s", err) httpError(w, http.StatusInternalServerError, "Unable to marshal status json: %s", err)
log.Println(errorText)
http.Error(w, errorText, 500)
return return
} }
w.Header().Set("Content-Type", "application/json") w.Header().Set("Content-Type", "application/json")
_, err = w.Write(jsonVal) _, err = w.Write(jsonVal)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Unable to write response json: %s", err) httpError(w, http.StatusInternalServerError, "Unable to write response json: %s", err)
log.Println(errorText)
http.Error(w, errorText, 500)
return return
} }
} }
@ -562,21 +505,19 @@ func handleFilteringAddURL(w http.ResponseWriter, r *http.Request) {
} }
if len(f.URL) == 0 { if len(f.URL) == 0 {
http.Error(w, "URL parameter was not specified", 400) http.Error(w, "URL parameter was not specified", http.StatusBadRequest)
return return
} }
if valid := govalidator.IsRequestURL(f.URL); !valid { if valid := govalidator.IsRequestURL(f.URL); !valid {
http.Error(w, "URL parameter is not valid request URL", 400) http.Error(w, "URL parameter is not valid request URL", http.StatusBadRequest)
return return
} }
// Check for duplicates // Check for duplicates
for i := range config.Filters { for i := range config.Filters {
if config.Filters[i].URL == f.URL { if config.Filters[i].URL == f.URL {
errorText := fmt.Sprintf("Filter URL already added -- %s", f.URL) httpError(w, http.StatusBadRequest, "Filter URL already added -- %s", f.URL)
log.Println(errorText)
http.Error(w, errorText, http.StatusBadRequest)
return return
} }
} }
@ -588,30 +529,22 @@ func handleFilteringAddURL(w http.ResponseWriter, r *http.Request) {
// Download the filter contents // Download the filter contents
ok, err := f.update(true) ok, err := f.update(true)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Couldn't fetch filter from url %s: %s", f.URL, err) httpError(w, http.StatusBadRequest, "Couldn't fetch filter from url %s: %s", f.URL, err)
log.Println(errorText)
http.Error(w, errorText, http.StatusBadRequest)
return return
} }
if f.RulesCount == 0 { if f.RulesCount == 0 {
errorText := fmt.Sprintf("Filter at the url %s has no rules (maybe it points to blank page?)", f.URL) httpError(w, http.StatusBadRequest, "Filter at the url %s has no rules (maybe it points to blank page?)", f.URL)
log.Println(errorText)
http.Error(w, errorText, http.StatusBadRequest)
return return
} }
if !ok { if !ok {
errorText := fmt.Sprintf("Filter at the url %s is invalid (maybe it points to blank page?)", f.URL) httpError(w, http.StatusBadRequest, "Filter at the url %s is invalid (maybe it points to blank page?)", f.URL)
log.Println(errorText)
http.Error(w, errorText, http.StatusBadRequest)
return return
} }
// Save the filter contents // Save the filter contents
err = f.save() err = f.save()
if err != nil { if err != nil {
errorText := fmt.Sprintf("Failed to save filter %d due to %s", f.ID, err) httpError(w, http.StatusBadRequest, "Failed to save filter %d due to %s", f.ID, err)
log.Println(errorText)
http.Error(w, errorText, http.StatusBadRequest)
return return
} }
@ -620,44 +553,36 @@ func handleFilteringAddURL(w http.ResponseWriter, r *http.Request) {
config.Filters = append(config.Filters, f) config.Filters = append(config.Filters, f)
err = writeAllConfigs() err = writeAllConfigs()
if err != nil { if err != nil {
errorText := fmt.Sprintf("Couldn't write config file: %s", err) httpError(w, http.StatusInternalServerError, "Couldn't write config file: %s", err)
log.Println(errorText)
http.Error(w, errorText, http.StatusInternalServerError)
return return
} }
err = reconfigureDNSServer() err = reconfigureDNSServer()
if err != nil { if err != nil {
errorText := fmt.Sprintf("Couldn't reconfigure the DNS server: %s", err) httpError(w, http.StatusInternalServerError, "Couldn't reconfigure the DNS server: %s", err)
log.Println(errorText)
http.Error(w, errorText, http.StatusInternalServerError)
} }
_, err = fmt.Fprintf(w, "OK %d rules\n", f.RulesCount) _, err = fmt.Fprintf(w, "OK %d rules\n", f.RulesCount)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Couldn't write body: %s", err) httpError(w, http.StatusInternalServerError, "Couldn't write body: %s", err)
log.Println(errorText)
http.Error(w, errorText, http.StatusInternalServerError)
} }
} }
func handleFilteringRemoveURL(w http.ResponseWriter, r *http.Request) { func handleFilteringRemoveURL(w http.ResponseWriter, r *http.Request) {
parameters, err := parseParametersFromBody(r.Body) parameters, err := parseParametersFromBody(r.Body)
if err != nil { if err != nil {
errorText := fmt.Sprintf("failed to parse parameters from body: %s", err) httpError(w, http.StatusBadRequest, "failed to parse parameters from body: %s", err)
log.Println(errorText)
http.Error(w, errorText, 400)
return return
} }
url, ok := parameters["url"] url, ok := parameters["url"]
if !ok { if !ok {
http.Error(w, "URL parameter was not specified", 400) http.Error(w, "URL parameter was not specified", http.StatusBadRequest)
return return
} }
if valid := govalidator.IsRequestURL(url); !valid { if valid := govalidator.IsRequestURL(url); !valid {
http.Error(w, "URL parameter is not valid request URL", 400) http.Error(w, "URL parameter is not valid request URL", http.StatusBadRequest)
return return
} }
@ -670,8 +595,7 @@ func handleFilteringRemoveURL(w http.ResponseWriter, r *http.Request) {
// Remove the filter file // Remove the filter file
err := os.Remove(filter.Path()) err := os.Remove(filter.Path())
if err != nil && !os.IsNotExist(err) { if err != nil && !os.IsNotExist(err) {
errorText := fmt.Sprintf("Couldn't remove the filter file: %s", err) httpError(w, http.StatusInternalServerError, "Couldn't remove the filter file: %s", err)
http.Error(w, errorText, http.StatusInternalServerError)
return return
} }
} }
@ -684,15 +608,13 @@ func handleFilteringRemoveURL(w http.ResponseWriter, r *http.Request) {
func handleFilteringEnableURL(w http.ResponseWriter, r *http.Request) { func handleFilteringEnableURL(w http.ResponseWriter, r *http.Request) {
parameters, err := parseParametersFromBody(r.Body) parameters, err := parseParametersFromBody(r.Body)
if err != nil { if err != nil {
errorText := fmt.Sprintf("failed to parse parameters from body: %s", err) httpError(w, http.StatusBadRequest, "failed to parse parameters from body: %s", err)
log.Println(errorText)
http.Error(w, errorText, 400)
return return
} }
url, ok := parameters["url"] url, ok := parameters["url"]
if !ok { if !ok {
http.Error(w, "URL parameter was not specified", 400) http.Error(w, "URL parameter was not specified", http.StatusBadRequest)
return return
} }
@ -723,15 +645,13 @@ func handleFilteringEnableURL(w http.ResponseWriter, r *http.Request) {
func handleFilteringDisableURL(w http.ResponseWriter, r *http.Request) { func handleFilteringDisableURL(w http.ResponseWriter, r *http.Request) {
parameters, err := parseParametersFromBody(r.Body) parameters, err := parseParametersFromBody(r.Body)
if err != nil { if err != nil {
errorText := fmt.Sprintf("failed to parse parameters from body: %s", err) httpError(w, http.StatusBadRequest, "failed to parse parameters from body: %s", err)
log.Println(errorText)
http.Error(w, errorText, 400)
return return
} }
url, ok := parameters["url"] url, ok := parameters["url"]
if !ok { if !ok {
http.Error(w, "URL parameter was not specified", 400) http.Error(w, "URL parameter was not specified", http.StatusBadRequest)
return return
} }
@ -760,9 +680,7 @@ func handleFilteringDisableURL(w http.ResponseWriter, r *http.Request) {
func handleFilteringSetRules(w http.ResponseWriter, r *http.Request) { func handleFilteringSetRules(w http.ResponseWriter, r *http.Request) {
body, err := ioutil.ReadAll(r.Body) body, err := ioutil.ReadAll(r.Body)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Failed to read request body: %s", err) httpError(w, http.StatusBadRequest, "Failed to read request body: %s", err)
log.Println(errorText)
http.Error(w, errorText, 400)
return return
} }
@ -796,17 +714,13 @@ func handleSafeBrowsingStatus(w http.ResponseWriter, r *http.Request) {
} }
jsonVal, err := json.Marshal(data) jsonVal, err := json.Marshal(data)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Unable to marshal status json: %s", err) httpError(w, http.StatusInternalServerError, "Unable to marshal status json: %s", err)
log.Println(errorText)
http.Error(w, errorText, 500)
} }
w.Header().Set("Content-Type", "application/json") w.Header().Set("Content-Type", "application/json")
_, err = w.Write(jsonVal) _, err = w.Write(jsonVal)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Unable to write response json: %s", err) httpError(w, http.StatusInternalServerError, "Unable to write response json: %s", err)
log.Println(errorText)
http.Error(w, errorText, 500)
return return
} }
} }
@ -817,9 +731,7 @@ func handleSafeBrowsingStatus(w http.ResponseWriter, r *http.Request) {
func handleParentalEnable(w http.ResponseWriter, r *http.Request) { func handleParentalEnable(w http.ResponseWriter, r *http.Request) {
parameters, err := parseParametersFromBody(r.Body) parameters, err := parseParametersFromBody(r.Body)
if err != nil { if err != nil {
errorText := fmt.Sprintf("failed to parse parameters from body: %s", err) httpError(w, http.StatusBadRequest, "failed to parse parameters from body: %s", err)
log.Println(errorText)
http.Error(w, errorText, 400)
return return
} }
@ -874,18 +786,14 @@ func handleParentalStatus(w http.ResponseWriter, r *http.Request) {
} }
jsonVal, err := json.Marshal(data) jsonVal, err := json.Marshal(data)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Unable to marshal status json: %s", err) httpError(w, http.StatusInternalServerError, "Unable to marshal status json: %s", err)
log.Println(errorText)
http.Error(w, errorText, 500)
return return
} }
w.Header().Set("Content-Type", "application/json") w.Header().Set("Content-Type", "application/json")
_, err = w.Write(jsonVal) _, err = w.Write(jsonVal)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Unable to write response json: %s", err) httpError(w, http.StatusInternalServerError, "Unable to write response json: %s", err)
log.Println(errorText)
http.Error(w, errorText, 500)
return return
} }
} }
@ -910,18 +818,14 @@ func handleSafeSearchStatus(w http.ResponseWriter, r *http.Request) {
} }
jsonVal, err := json.Marshal(data) jsonVal, err := json.Marshal(data)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Unable to marshal status json: %s", err) httpError(w, http.StatusInternalServerError, "Unable to marshal status json: %s", err)
log.Println(errorText)
http.Error(w, errorText, 500)
return return
} }
w.Header().Set("Content-Type", "application/json") w.Header().Set("Content-Type", "application/json")
_, err = w.Write(jsonVal) _, err = w.Write(jsonVal)
if err != nil { if err != nil {
errorText := fmt.Sprintf("Unable to write response json: %s", err) httpError(w, http.StatusInternalServerError, "Unable to write response json: %s", err)
log.Println(errorText)
http.Error(w, errorText, 500)
return return
} }
} }