mirror of
https://github.com/therootcompany/golib.git
synced 2025-10-07 01:28:19 +00:00
103 lines
2.2 KiB
Go
103 lines
2.2 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"io"
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"log"
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"net/http"
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"os"
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"strings"
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"github.com/fatih/color"
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"github.com/therootcompany/golib/colorjson"
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)
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var jsonf = colorjson.NewFormatter()
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func main() {
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jsonf.Indent = 3
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color.NoColor = false // TODO manual override via flags
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mux := http.NewServeMux()
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mux.HandleFunc("GET /", handler)
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mux.HandleFunc("POST /", handler)
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mux.HandleFunc("PATCH /", handler)
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mux.HandleFunc("PUT /", handler)
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mux.HandleFunc("DELETE /", handler)
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addr := "localhost:8088"
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fmt.Printf("Listening on %s...\n\n", addr)
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log.Fatal(http.ListenAndServe(addr, mux))
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}
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func handler(w http.ResponseWriter, r *http.Request) {
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// Log method, path, and query
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var query string
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if len(r.URL.RawQuery) > 0 {
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query = "?" + r.URL.RawQuery
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}
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log.Printf("%s %s%s", r.Method, r.URL.Path, query)
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// Find max header name length for alignment
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maxLen := len("HOST")
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for name := range r.Header {
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if len(name) > maxLen {
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maxLen = len(name)
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}
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}
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maxLen += 1
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fmt.Printf(" %-"+fmt.Sprintf("%d", maxLen+1)+"s %s\n", "HOST", r.Host)
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for name, values := range r.Header {
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for _, value := range values {
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fmt.Printf(" %-"+fmt.Sprintf("%d", maxLen+1)+"s %s\n", name+":", value)
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}
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}
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fmt.Fprintf(os.Stderr, "\n")
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body, err := io.ReadAll(r.Body)
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switch strings.ToUpper(r.Method) {
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case "GET", "DELETE":
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if len(body) > 0 {
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fmt.Fprintf(os.Stderr, "Unexpected body:\n%q\n", string(body))
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}
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return
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case "POST", "PATCH", "PUT":
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break
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default:
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fmt.Fprintf(os.Stderr, "Unexpected method\n")
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return
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}
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defer fmt.Println()
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// Read request body
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if err != nil {
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fmt.Fprintf(os.Stderr, "Failed to read body:\n%q\n", string(body))
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return
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}
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defer func() {
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_ = r.Body.Close()
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}()
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// Parse and pretty-print JSON, or raw body
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var text string
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var data any
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if err := json.Unmarshal(body, &data); err == nil {
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body, _ = jsonf.Marshal(data)
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}
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text = string(body)
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text = prefixLines(text, " ")
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text = strings.TrimSpace(text)
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fmt.Printf(" %s\n", text)
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}
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func prefixLines(text, prefix string) string {
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lines := strings.Split(text, "\n")
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for i, line := range lines {
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lines[i] = prefix + line
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}
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return strings.Join(lines, "\n")
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}
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