// WrapHandler wraps an httpctx.Handler in the paraphernalia needed by devd for
// logging, latency, and so forth.
func (dd *Devd) WrapHandler(log termlog.Logger, next httpctx.Handler) http.Handler {
h := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
revertOriginalHost(r)
timr := timer.Timer{}
sublog := log.Group()
defer func() {
timing := termlog.DefaultPalette.Timestamp.SprintFunc()("timing: ")
sublog.SayAs("timer", timing+timr.String())
sublog.Done()
}()
if matchStringAny(dd.IgnoreLogs, fmt.Sprintf("%s%s", r.URL.Host, r.RequestURI)) {
sublog.Quiet()
}
timr.RequestHeaders()
time.Sleep(time.Millisecond * time.Duration(dd.Latency))
sublog.Say("%s %s", r.Method, r.URL)
LogHeader(sublog, r.Header)
ctx := timr.NewContext(context.Background())
ctx = termlog.NewContext(ctx, sublog)
next.ServeHTTPContext(
ctx,
&ResponseLogWriter{Log: sublog, Resp: w, Timer: &timr},
r,
)
})
return h
}
// Determine if a file should be included, based on the given exclude paths.
func shouldInclude(file string, excludePatterns []string, log termlog.Logger) bool {
for _, pattern := range excludePatterns {
match, err := doublestar.Match(pattern, file)
if err != nil {
log.Warn("Error matching pattern '%s': %s", pattern, err)
} else if match {
return false
}
}
return true
}
func dirList(ci inject.CopyInject, logger termlog.Logger, w http.ResponseWriter, name string, f http.File, templates *template.Template) {
w.Header().Set("Cache-Control", "no-store, must-revalidate")
files, err := f.Readdir(0)
if err != nil {
logger.Shout("Error reading directory for listing: %s", err)
return
}
data := dirData{Name: name, Files: files}
err = ci.ServeTemplate(http.StatusOK, w, templates.Lookup("dirlist.html"), data)
if err != nil {
logger.Shout("Failed to generate dir listing: %s", err)
}
}
// Determine if a file should be included, based on the given exclude paths.
func shouldInclude(file string, excludePatterns []string, log termlog.Logger) bool {
for _, pattern := range excludePatterns {
match, err := filepath.Match(pattern, file)
if err != nil {
log.Warn("Invalid pattern: `%s'", pattern)
} else if match {
return false
}
}
return true
}
func dirList(ci inject.CopyInject, logger termlog.Logger, w http.ResponseWriter, name string, f http.File, templates *template.Template) {
w.Header().Set("Cache-Control", "no-store, must-revalidate")
files, err := f.Readdir(0)
if err != nil {
logger.Shout("Error reading directory for listing: %s", err)
return
}
data := dirData{Name: name, Files: files}
buff := bytes.NewBuffer(make([]byte, 0, 0))
err = templates.Lookup("dirlist.html").Execute(buff, data)
length := buff.Len()
if err != nil {
logger.Shout("Error producing directory listing: %s", err)
}
inj, err := ci.Sniff(buff)
if err != nil {
logger.Shout("Failed to inject in dir listing: %s", err)
return
}
w.Header().Set(
"Content-Length", fmt.Sprintf("%d", length+inj.Extra()),
)
_, err = inj.Copy(w)
if err != nil {
logger.Shout("Failed to inject in dir listing: %s", err)
return
}
}
// LogHeader logs a header
func LogHeader(log termlog.Logger, h http.Header) {
max := 0
for k := range h {
if len(k) > max {
max = len(k)
}
}
for k, vals := range h {
for _, v := range vals {
pad := fmt.Sprintf(fmt.Sprintf("%%%ds", max-len(k)+1), " ")
log.Say(
"\t%s%s%s",
color.BlueString(k)+":",
pad,
v,
)
}
}
}
// Serve starts the devd server. The callback is called with the serving URL
// just before service starts.
func (dd *Devd) Serve(address string, port int, certFile string, logger termlog.Logger, callback func(string)) error {
templates, err := ricetemp.MakeTemplates(rice.MustFindBox("templates"))
if err != nil {
return fmt.Errorf("Error loading templates: %s", err)
}
mux, err := dd.Router(logger, templates)
if err != nil {
return err
}
var tlsConfig *tls.Config
var tlsEnabled bool
if certFile != "" {
tlsConfig, err = getTLSConfig(certFile)
if err != nil {
return fmt.Errorf("Could not load certs: %s", err)
}
tlsEnabled = true
}
var hl net.Listener
if port > 0 {
hl, err = net.Listen("tcp", fmt.Sprintf("%v:%d", address, port))
} else {
hl, err = pickPort(address, portLow, portHigh, tlsEnabled)
}
if err != nil {
return fmt.Errorf("Could not bind to port: %s", err)
}
if tlsConfig != nil {
hl = tls.NewListener(hl, tlsConfig)
}
hl = slowdown.NewSlowListener(hl, dd.UpKbps*1024, dd.DownKbps*1024)
url := formatURL(tlsEnabled, address, hl.Addr().(*net.TCPAddr).Port)
logger.Say("Listening on %s (%s)", url, hl.Addr().String())
server := &http.Server{Addr: hl.Addr().String(), Handler: mux}
callback(url)
err = server.Serve(hl)
logger.Shout("Server stopped: %v", err)
return nil
}
// RouteHandler handles a single route
func (dd *Devd) RouteHandler(log termlog.Logger, route Route, templates *template.Template) http.Handler {
ci := inject.CopyInject{}
if dd.HasLivereload() {
ci = livereload.Injector
}
next := route.Endpoint.Handler(templates, ci)
h := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
timr := timer.Timer{}
sublog := log.Group()
defer func() {
timing := termlog.DefaultPalette.Timestamp.SprintFunc()("timing: ")
sublog.SayAs(
"timer",
timing+timr.String(),
)
sublog.Done()
}()
if matchStringAny(dd.IgnoreLogs, fmt.Sprintf("%s%s", route.Host, r.RequestURI)) {
sublog.Quiet()
}
timr.RequestHeaders()
time.Sleep(time.Millisecond * time.Duration(dd.Latency))
sublog.Say("%s %s", r.Method, r.URL)
LogHeader(sublog, r.Header)
ctx := timr.NewContext(context.Background())
ctx = termlog.NewContext(ctx, sublog)
next.ServeHTTPContext(
ctx,
&ResponseLogWriter{
Log: sublog,
Resp: w,
Timer: &timr,
},
r,
)
})
return http.StripPrefix(route.Path, h)
}
func devdHandler(log termlog.Logger, route Route, templates *template.Template, logHeaders bool, ignoreHeaders []*regexp.Regexp, livereload bool, latency int) http.Handler {
ci := inject.CopyInject{}
if livereload {
ci = injectLivereload
}
next := route.Endpoint.Handler(templates, ci)
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
var sublog termlog.Logger
if matchStringAny(ignoreHeaders, fmt.Sprintf("%s%s", route.Host, r.RequestURI)) {
sublog = termlog.DummyLogger{}
} else {
sublog = log.Group()
}
timr := timer.Timer{}
defer func() {
timing := termlog.DefaultPalette.Timestamp.SprintFunc()("timing: ")
sublog.SayAs(
"timer",
timing+timr.String(),
)
sublog.Done()
}()
timr.RequestHeaders()
time.Sleep(time.Millisecond * time.Duration(latency))
sublog.Say("%s %s", r.Method, r.URL)
if logHeaders {
LogHeader(sublog, r.Header)
}
ctx := timr.NewContext(context.Background())
ctx = termlog.NewContext(ctx, sublog)
next.ServeHTTPContext(
ctx,
&ResponseLogWriter{
log: sublog,
rw: w,
timr: &timr,
logHeaders: logHeaders,
},
r,
)
})
}
// name is '/'-separated, not filepath.Separator.
func (fserver *FileServer) serveFile(
logger termlog.Logger,
w http.ResponseWriter,
r *http.Request,
name string,
redirect bool,
) {
const indexPage = "/index.html"
// redirect .../index.html to .../
// can't use Redirect() because that would make the path absolute,
// which would be a problem running under StripPrefix
if strings.HasSuffix(r.URL.Path, indexPage) {
logger.SayAs(
"debug", "debug fileserver: redirecting %s -> ./", indexPage,
)
localRedirect(w, r, "./")
return
}
f, err := fserver.Root.Open(name)
if err != nil {
logger.WarnAs("debug", "debug fileserver: %s", err)
if err := notFound(fserver.Inject, fserver.Templates, w); err != nil {
logger.Shout("Internal error: %s", err)
}
return
}
defer f.Close()
d, err1 := f.Stat()
if err1 != nil {
logger.WarnAs("debug", "debug fileserver: %s", err)
if err := notFound(fserver.Inject, fserver.Templates, w); err != nil {
logger.Shout("Internal error: %s", err)
}
return
}
if redirect {
// redirect to canonical path: / at end of directory url
// r.URL.Path always begins with /
url := r.URL.Path
if d.IsDir() {
if url[len(url)-1] != '/' {
localRedirect(w, r, path.Base(url)+"/")
return
}
} else {
if url[len(url)-1] == '/' {
localRedirect(w, r, "../"+path.Base(url))
return
}
}
}
// use contents of index.html for directory, if present
if d.IsDir() {
index := name + indexPage
ff, err := fserver.Root.Open(index)
if err == nil {
defer ff.Close()
dd, err := ff.Stat()
if err == nil {
name = index
d = dd
f = ff
}
}
}
// Still a directory? (we didn't find an index.html file)
if d.IsDir() {
if checkLastModified(w, r, d.ModTime()) {
return
}
dirList(fserver.Inject, logger, w, name, f, fserver.Templates)
return
}
// serverContent will check modification time
sizeFunc := func() (int64, error) { return d.Size(), nil }
err = serveContent(fserver.Inject, w, r, d.Name(), d.ModTime(), sizeFunc, f)
if err != nil {
logger.Warn("Error serving file: %s", err)
}
}
func testpatt(l termlog.Logger) {
l.Say("Log")
l.Notice("Notice!")
l.Warn("Warn!")
l.Shout("Error!")
}
// Serve starts the devd server
func (dd *Devd) Serve(logger termlog.Logger) error {
templates, err := ricetemp.MakeTemplates(rice.MustFindBox("templates"))
if err != nil {
return fmt.Errorf("Error loading templates: %s", err)
}
ignores := make([]*regexp.Regexp, 0, 0)
for _, expr := range dd.IgnoreLogs {
v, err := regexp.Compile(expr)
if err != nil {
return fmt.Errorf("%s", err)
}
ignores = append(ignores, v)
}
routeColl := make(RouteCollection)
for _, s := range dd.Routes {
err := routeColl.Set(s)
if err != nil {
return fmt.Errorf("Invalid route specification: %s", err)
}
}
mux := http.NewServeMux()
for match, route := range routeColl {
handler := dd.RouteHandler(logger, route, templates, ignores)
mux.Handle(match, http.StripPrefix(route.Path, handler))
}
lr := livereload.NewServer("livereload", logger)
if dd.LivereloadEnabled() {
mux.Handle("/livereload", lr)
mux.Handle("/livereload.js", http.HandlerFunc(lr.ServeScript))
}
if dd.LivereloadRoutes {
err = WatchRoutes(routeColl, lr, dd.Excludes, logger)
if err != nil {
return fmt.Errorf("Could not watch routes for livereload: %s", err)
}
}
if len(dd.Watch) > 0 {
err = WatchPaths(dd.Watch, dd.Excludes, lr, logger)
if err != nil {
return fmt.Errorf("Could not watch path for livereload: %s", err)
}
}
var hl net.Listener
tlsEnabled := false
if dd.CertFile != "" {
tlsEnabled = true
}
if dd.Port > 0 {
hl, err = net.Listen("tcp", fmt.Sprintf("%v:%d", dd.Address, dd.Port))
} else {
hl, err = pickPort(dd.Address, portLow, portHigh, tlsEnabled)
}
if err != nil {
return fmt.Errorf("Could not bind to port: %s", err)
}
var tlsConfig *tls.Config
if dd.CertFile != "" {
tlsConfig, err = getTLSConfig(dd.CertFile)
if err != nil {
return fmt.Errorf("Could not load certs: %s", err)
}
hl = tls.NewListener(hl, tlsConfig)
}
hl = slowdown.NewSlowListener(hl, dd.UpKbps*1024, dd.DownKbps*1024)
url := formatURL(tlsEnabled, dd.Address, hl.Addr().(*net.TCPAddr).Port)
logger.Say("Listening on %s (%s)", url, hl.Addr().String())
if dd.OpenBrowser {
go func() {
webbrowser.Open(url)
}()
}
server := &http.Server{
Addr: hl.Addr().String(),
Handler: hostPortStrip(mux),
}
err = server.Serve(hl)
logger.Shout("Server stopped: %v", err)
return nil
}