293 lines
7.8 KiB
Go
293 lines
7.8 KiB
Go
// Copyright (C) 2023-2024 Umorpha Systems
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// SPDX-License-Identifier: AGPL-3.0-or-later
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package main
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import (
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"context"
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"embed"
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"encoding/json"
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"fmt"
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"html/template"
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"io"
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"log"
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"mime"
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"mime/multipart"
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"net/http"
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"net/url"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"github.com/datawire/ocibuild/pkg/cliutil"
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"github.com/spf13/cobra"
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source "git.mothstuff.lol/lukeshu/eclipse"
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"git.mothstuff.lol/lukeshu/eclipse/lib/eclipse"
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)
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func main() {
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argparser := &cobra.Command{
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Use: os.Args[0] + " [flags]",
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Short: "HTTP server",
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Args: cliutil.WrapPositionalArgs(cobra.NoArgs),
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SilenceErrors: true, // we'll handle this ourselves after .ExecuteContext()
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SilenceUsage: true, // FlagErrorFunc will handle this
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CompletionOptions: cobra.CompletionOptions{
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DisableDefaultCmd: true,
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},
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}
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argparser.SetFlagErrorFunc(cliutil.FlagErrorFunc)
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argparser.SetHelpTemplate(cliutil.HelpTemplate)
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var cfgFile string
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argparser.Flags().StringVar(&cfgFile, "config", source.DefaultConfigFile,
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"Config file to use")
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argparser.MarkFlagFilename("config", "yml", "yaml")
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var socket string
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argparser.Flags().StringVar(&socket, "socket", "tcp::8080",
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"the socket to listen on; a \"family:address\" pair, where the\n"+
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"\"family\" is one of \"tcp\", \"tcp4\", \"tcp6\", \"unix\", \"unixpacket\"\n"+
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"(the usual Go net.Listen() network names), or \"fd\" (to listen\n"+
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"on an already-open file descriptor). The \"address\" part for\n"+
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"the \"fd\" family is one of\n"+
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" 1. a file descriptor number (or the special names \"stdin\",\n"+
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" \"stdout\", or \"stderr\" to refer to 0, 1, or 2\n"+
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" respectively),\n"+
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" 2. \"systemd:N\" to refer to the Nth file descriptor passed in\n"+
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" via systemd (or \"systemd\" as shorthand for \"systemd:0\")\n"+
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" (see sd_listend_fds(3)),\n"+
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" 3. \"systemd:NAME\" to refer to a named file descriptor passed\n"+
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" in via systemd (see sd_listend_fds_with_names(3)).\n")
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argparser.RunE = func(cmd *cobra.Command, args []string) error {
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stype, saddr, ok := strings.Cut(socket, ":")
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if !ok {
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return cliutil.FlagErrorFunc(cmd, fmt.Errorf("invalid address: %q", socket))
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}
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return Serve(cfgFile, stype, saddr)
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}
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ctx := context.Background()
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if err := argparser.ExecuteContext(ctx); err != nil {
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fmt.Fprintf(os.Stderr, "%v: error: %v\n", argparser.CommandPath(), err)
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os.Exit(1)
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}
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}
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func Serve(cfgFile, stype, saddr string) (err error) {
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maybeSetErr := func(_err error) {
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if err == nil && _err != nil {
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err = _err
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}
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}
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cfg, err := eclipse.LoadConfig(cfgFile)
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if err != nil {
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return err
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}
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db, err := cfg.DB()
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if err != nil {
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return err
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}
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defer func() { maybeSetErr(db.Close()) }()
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sock, err := netListen(stype, saddr)
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if err != nil {
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return err
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}
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state := &ServerState{
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db: db,
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}
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router := http.NewServeMux()
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router.HandleFunc("/", state.serveIndex)
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router.HandleFunc("/style.css", state.serveStatic)
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router.HandleFunc("/favicon.ico", state.serveStatic)
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router.HandleFunc("/eclipse.tar", state.serveStatic)
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router.HandleFunc("/jobs/", state.serveJobs)
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log.Printf("Serving on %v...", sock.Addr())
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return http.Serve(sock, router)
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}
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type ServerState struct {
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db *eclipse.DB
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}
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//go:embed style.css
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var fileStyle []byte
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//go:embed favicon.ico
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var fileFavicon []byte
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func (*ServerState) serveStatic(w http.ResponseWriter, r *http.Request) {
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if r.Method != http.MethodGet {
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http.Error(w, "HTTP 405: only GET is supported", http.StatusMethodNotAllowed)
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return
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}
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switch r.URL.Path {
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case "/style.css":
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w.Header().Set("Content-Type", "text/css")
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_, _ = w.Write(fileStyle)
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case "/favicon.ico":
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w.Header().Set("Content-Type", "image/vnd.microsoft.icon")
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_, _ = w.Write(fileFavicon)
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case "/eclipse.tar":
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w.Header().Set("Content-Type", "application/x-tar")
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_, _ = w.Write(source.Tarball)
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default:
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http.NotFound(w, r)
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}
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}
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//go:embed html
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var tmplFS embed.FS
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var (
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tmplIndex = template.Must(template.ParseFS(tmplFS, "html/pages/index.html.tmpl", "html/lib/*.html.tmpl"))
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tmplJobs = template.Must(template.ParseFS(tmplFS, "html/pages/jobs.html.tmpl", "html/lib/*.html.tmpl"))
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tmplJob = template.Must(template.ParseFS(tmplFS, "html/pages/job.html.tmpl", "html/lib/*.html.tmpl"))
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)
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func httpAddSlash(w http.ResponseWriter, r *http.Request) {
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u := &url.URL{Path: r.URL.Path + "/", RawQuery: r.URL.RawQuery}
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http.Redirect(w, r, u.String(), http.StatusMovedPermanently)
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}
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func (*ServerState) serveIndex(w http.ResponseWriter, r *http.Request) {
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if r.URL.Path != "/" {
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http.NotFound(w, r)
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return
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}
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if r.Method != http.MethodGet {
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http.Error(w, "HTTP 405: only GET is supported", http.StatusMethodNotAllowed)
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return
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}
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w.Header().Set("Content-Type", "text/html; charset=utf-8")
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if err := tmplIndex.Execute(w, nil); err != nil {
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log.Printf("error: %q: %v", r.URL, err)
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}
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}
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func (o *ServerState) serveJobs(w http.ResponseWriter, r *http.Request) {
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rest := strings.TrimPrefix(r.URL.Path, "/jobs/")
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if rest == "" {
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switch r.Method {
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case http.MethodGet:
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jobs, err := o.db.ListJobs()
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", "text/html; charset=utf-8")
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if err := tmplJobs.Execute(w, map[string]any{"Jobs": jobs}); err != nil {
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log.Printf("error: %q: %v", r.URL, err)
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}
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case http.MethodPost:
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// TODO
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default:
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http.Error(w, "HTTP 405: only GET and POST are supported", http.StatusMethodNotAllowed)
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}
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return
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}
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jobIDStr, file, haveSlash := strings.Cut(rest, "/")
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jobID, err := strconv.Atoi(jobIDStr)
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if err != nil {
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http.NotFound(w, r)
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return
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}
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job, err := o.db.GetJob(eclipse.JobID(jobID))
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if err != nil {
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http.NotFound(w, r)
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return
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}
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if !haveSlash {
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httpAddSlash(w, r)
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return
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}
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switch file {
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case "":
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switch r.Method {
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case http.MethodGet:
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w.Header().Set("Content-Type", "text/html; charset=utf-8")
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if err := tmplJob.Execute(w, map[string]any{"Job": job}); err != nil {
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log.Printf("error: %q: %v", r.URL, err)
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}
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case http.MethodPost:
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bs, err := json.Marshal(job)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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mediaType, params, err := mime.ParseMediaType(r.Header.Get("Content-Type"))
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if err != nil {
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http.Error(w, err.Error(), http.StatusBadRequest)
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return
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}
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if mediaType != "multipart/mixed" {
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http.Error(w, "invalid media type", http.StatusBadRequest)
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return
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}
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reader := multipart.NewReader(r.Body, params["boundary"])
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w.Header().Set("Content-Type", "application/json")
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if _, err := w.Write(bs); err != nil {
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log.Printf("error: %q: %v", r.URL, err)
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return
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}
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for {
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part, err := reader.NextPart()
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if err != nil {
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if err == io.EOF {
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break
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}
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log.Printf("error: %q: %v", r.URL, err)
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return
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}
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disposition, params, err := mime.ParseMediaType(part.Header.Get("Content-Disposition"))
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if err != nil {
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log.Printf("error: %q: %v", r.URL, err)
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return
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}
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if disposition != "attachment" {
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log.Printf("error: %q: invalid disposition", r.URL)
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return
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}
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switch {
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case params["filename"] == "log.txt":
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// TODO
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case params["filename"] == "status.txt":
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// TODO
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case strings.HasPrefix(params["filename"], "artifacts/"):
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// TODO
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default:
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log.Printf("error: %q: invalid artifact name", r.URL)
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return
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}
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}
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default:
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http.Error(w, "HTTP 405: only GET and POST are supported", http.StatusMethodNotAllowed)
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}
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case "log.txt":
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if r.Method != http.MethodGet {
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http.Error(w, "HTTP 405: only GET is supported", http.StatusMethodNotAllowed)
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return
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}
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// TODO
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default:
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if r.Method != http.MethodGet {
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http.Error(w, "HTTP 405: only GET is supported", http.StatusMethodNotAllowed)
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return
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}
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http.FileServer(http.Dir(filepath.Join("/var/lib/eclipse/jobfiles", jobIDStr))).ServeHTTP(w, r)
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}
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}
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