// ContextTimeout sets a timeout in the context.
func ContextTimeout(ctx context.Context, w http.ResponseWriter, r *http.Request, next NextMiddlewareFn) error {
secs := 55 * time.Second
if r.Header.Get("X-AppEngine-QueueName") != "" || r.Header.Get("X-AppEngine-Cron") != "" {
secs = (9*60 + 55) * time.Second
}
ctx, cancel := context.WithDeadline(ctx, time.Now().Add(secs))
done := make(chan error, 1)
go func() {
done <- next(ctx)
}()
select {
case err := <-done:
cancel()
return err
case <-time.After(secs):
log.Criticalf(ctx, "request timeout")
cancel()
return nil
}
panic("should not reach here")
}
func (sink *LogSink) writeLogStorage(r *wcg.LogRecord) error {
c := sink.ctx
formatter := sink.formatter
if c == nil {
c = NewContext(r.Request)
}
var text string
if r.SourceStack != nil && len(r.SourceStack) > 0 {
text = fmt.Sprintf(
"%s\n-- Stack Trace --\n%s",
string(formatter.Format(r)),
strings.Join(r.SourceStack, "\n"),
)
} else {
text = string(formatter.Format(r))
}
switch r.Level {
case wcg.LogLevelTrace:
log.Debugf(c, "%s", text) // app engine does not support trace level
case wcg.LogLevelDebug:
log.Debugf(c, "%s", text)
case wcg.LogLevelInfo:
log.Infof(c, "%s", text)
case wcg.LogLevelWarn:
log.Warningf(c, "%s", text)
case wcg.LogLevelError:
log.Errorf(c, "%s", text)
case wcg.LogLevelFatal:
log.Criticalf(c, "%s", text)
default:
// nothing
}
return nil
}
func handleAuthorize(res http.ResponseWriter, req *http.Request, _ httprouter.Params) {
ctx := appengine.NewContext(req)
//retrieve code and state from the callback
code, state := req.FormValue("code"), req.FormValue("state")
//get session from memcache
s := getSession(ctx, req)
//compare state from callback with state stored in memcache
if state != s.State {
http.Error(res, "Detected cross-site attack", http.StatusUnauthorized)
log.Criticalf(ctx, "Non-matching states from %s", req.RemoteAddr)
return
}
//exchange the auth code given for an access token
tok, err := conf.Exchange(ctx, code)
if err != nil {
http.Error(res, "Server Error", http.StatusInternalServerError)
log.Errorf(ctx, err.Error())
return
}
//create a client from the token
client := conf.Client(ctx, tok)
//create a gmail service from the client
srv, err := gmail.New(client)
if err != nil {
http.Error(res, "Server Error", http.StatusInternalServerError)
log.Errorf(ctx, err.Error())
return
}
//request a list of messages in the user's mailbox
list, err := srv.Users.Threads.List("me").Do()
if err != nil {
http.Error(res, "Server Error", http.StatusInternalServerError)
log.Errorf(ctx, err.Error())
return
}
//loop through and print out the first 25 message threads from your mailbox
output := "<p>Messages:</p>"
if len(list.Threads) > 0 {
i := 1
for _, val := range list.Threads {
output += "<p>- " + val.Snippet + "...</p>"
if i > 25 {
break
}
i++
}
} else {
output += "<p>You have no messages!</p>"
}
io.WriteString(res, output)
}
func createTables(writer http.ResponseWriter, req *http.Request) {
context := appengine.NewContext(req)
client, err := google.DefaultClient(context, scope)
if err != nil {
writer.WriteHeader(http.StatusInternalServerError)
log.Criticalf(context, "Unable to get default client: %v", err)
return
}
service, err := bigquery.New(client)
if err != nil {
log.Criticalf(context, "tables/tables.go: Unable to create bigquery service: %v", err)
writer.WriteHeader(http.StatusUnauthorized)
return
}
t := time.Now()
for i := 1; i < 3; i++ {
t = t.AddDate(0, 0, 1)
log.Infof(context, "tables/tables.go: Creating tables for %v-%v-%v", t.Year(), int(t.Month()), t.Day())
insertTablesForTime(t, service, errorHandler(writer, context))
}
}
func writeLogMessage(c context.Context, level logLevel, msg string) {
const fmt = "%s"
switch level {
case levelDebug:
log.Debugf(c, fmt, msg)
case levelWarning:
log.Warningf(c, fmt, msg)
case levelError:
log.Errorf(c, fmt, msg)
case levelCritical:
log.Criticalf(c, fmt, msg)
default:
log.Infof(c, fmt, msg)
}
}
func handleAuthorize(res http.ResponseWriter, req *http.Request, _ httprouter.Params) {
ctx := appengine.NewContext(req)
code, state := req.FormValue("code"), req.FormValue("state")
s := getSession(ctx, req)
if s.State != state {
http.Error(res, "Detected cross-site attack", http.StatusUnauthorized)
log.Criticalf(ctx, "Non-matching states from %s", req.RemoteAddr)
return
}
data, err := getToken(ctx, code)
if err != nil {
http.Error(res, "Server Error", http.StatusInternalServerError)
log.Errorf(ctx, err.Error())
return
}
io.WriteString(res, data.UID)
}
// Criticalf is like Debugf, but at Critical level.
func Criticalf(ctx context.Context, format string, args ...interface{}) {
log.Criticalf(ctx, format, args...)
}
// adminHandler serves an administrative interface.
func adminHandler(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
if !user.IsAdmin(c) {
http.Error(w, "forbidden", http.StatusForbidden)
return
}
var newLink *Link
var doErr error
if r.Method == "POST" {
key := r.FormValue("key")
switch r.FormValue("do") {
case "Add":
newLink = &Link{key, r.FormValue("target")}
doErr = putLink(c, newLink)
case "Delete":
k := datastore.NewKey(c, kind, key, 0, nil)
doErr = datastore.Delete(c, k)
default:
http.Error(w, "unknown action", http.StatusBadRequest)
}
err := memcache.Delete(c, cacheKey(key))
if err != nil && err != memcache.ErrCacheMiss {
log.Warningf(c, "%q: %v", key, err)
}
}
var links []*Link
_, err := datastore.NewQuery(kind).Order("Key").GetAll(c, &links)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
log.Errorf(c, "%v", err)
return
}
// Put the new link in the list if it's not there already.
// (Eventual consistency means that it might not show up
// immediately, which might be confusing for the user.)
if newLink != nil && doErr == nil {
found := false
for i := range links {
if links[i].Key == newLink.Key {
found = true
break
}
}
if !found {
links = append([]*Link{newLink}, links...)
}
newLink = nil
}
var data = struct {
BaseURL string
Prefix string
Links []*Link
New *Link
Error error
}{baseURL, prefix, links, newLink, doErr}
if err := adminTemplate.Execute(w, &data); err != nil {
log.Criticalf(c, "adminTemplate: %v", err)
}
}
func mlb_handler(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
// prepare the request
timezone, err := time.LoadLocation("America/New_York")
if err != nil {
log.Criticalf(c, "%s", err)
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
year, month, day := time.Now().In(timezone).Date()
dayString := strconv.Itoa(day)
if len(dayString) == 1 {
dayString = fmt.Sprint(0, dayString)
}
monthString := strconv.Itoa(int(month))
if len(monthString) == 1 {
monthString = fmt.Sprint(0, monthString)
}
// make the call
client := urlfetch.Client(c)
response, err := client.Get(fmt.Sprint("http://gd2.mlb.com/components/game/mlb/year_", year, "/month_", monthString, "/day_", dayString, "/master_scoreboard.json"))
if err != nil {
log.Criticalf(c, "%s", err)
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
// parse the response
var parsed MLBResponse
err = json.NewDecoder(response.Body).Decode(&parsed)
if err != nil {
log.Criticalf(c, "%s", err)
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
// find the jays game
var jaysGame *Game
areJaysHome := false
games := parsed.Data.Games.Game
for index, game := range games {
if game.HomeTeamCity == "Toronto" {
jaysGame = &games[index]
areJaysHome = true
break
} else if game.AwayTeamCity == "Toronto" {
jaysGame = &games[index]
areJaysHome = false
break
}
}
if jaysGame != nil {
// pull the last alert out of the db
q := datastore.NewQuery("jays").Order("-Updated")
var alerts []Alert
keys, err := q.GetAll(c, &alerts)
if err != nil {
log.Criticalf(c, "%s", err)
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
notify := false
jaysGame.Alerts.Updated = time.Now()
if len(alerts) == 0 {
// put the new alert into the db
_, err := datastore.Put(c, datastore.NewIncompleteKey(c, "jays", nil), &jaysGame.Alerts)
if err != nil {
log.Criticalf(c, "%s", err)
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
if jaysGame.Alerts.BriefText != "" {
notify = true
}
} else {
// take the latest entity
latest := alerts[0]
// check if it is different
if latest.BriefText != jaysGame.Alerts.BriefText {
_, err = datastore.Put(c, keys[0], &jaysGame.Alerts)
if err != nil {
log.Criticalf(c, "%s", err)
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
if jaysGame.Alerts.BriefText != "" {
notify = true
}
}
}
if notify {
color := "#808080"
if areJaysHome {
if jaysGame.Linescore.Runs.Home > jaysGame.Linescore.Runs.Away {
color = "#00cc00"
} else if jaysGame.Linescore.Runs.Away > jaysGame.Linescore.Runs.Home {
color = "#e50000"
}
} else {
if jaysGame.Linescore.Runs.Home > jaysGame.Linescore.Runs.Away {
color = "#e50000"
} else if jaysGame.Linescore.Runs.Away > jaysGame.Linescore.Runs.Home {
color = "#00cc00"
}
}
_, err = send_to_slack(jaysGame.Alerts.BriefText, color, c)
if err != nil {
log.Criticalf(c, "%s", err)
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
}
}
}
func (c Context) Criticalf(format string, args ...interface{}) {
log.Criticalf(c, format, args...)
}
func logCritical(c context.Context, s string, params ...interface{}) {
if c != nil && c.Value("stubcontext") == nil {
log.Criticalf(c, s, params...)
}
}