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cache_server.go
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cache_server.go
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package main
import (
"fmt"
"net/http"
"strconv"
"text/template"
"time"
log "github.com/sirupsen/logrus"
)
type cacheHandler struct {
cache *localCache
config Config
}
type cacheResponseData struct {
UserList []userList
Response cacheFormResponse
UserStatuses map[string]int
ServerTime time.Time
}
type cacheFormResponse struct {
Result string
Username string
Error string
}
func (c cacheHandler) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
var cfr cacheFormResponse
t := time.Now()
if request.Method == http.MethodPost {
username := request.FormValue("username")
if request.FormValue("clear") == "clear" {
log.Debug("cache admin: clearing cache for user: ", username)
err := c.cache.clear(username)
if err != nil {
cfr = cacheFormResponse{"cleared", username, err.Error()}
} else {
cfr = cacheFormResponse{Result: "cleared", Username: username}
}
} else if request.FormValue("update") == "update" {
log.Debug("cache admin: updating cache for user: ", username)
slackStatus := request.FormValue("slackStatus")
slackUserID := request.FormValue("slackUserID")
// Custom Expire
customExpireWeeks, _ := strconv.Atoi(request.FormValue("customExpireWeeks"))
customExpireDays, _ := strconv.Atoi(request.FormValue("customExpireDays"))
customExpireHours, _ := strconv.Atoi(request.FormValue("customExpireHours"))
var expire time.Time
if customExpireHours > 0 || customExpireDays > 0 || customExpireWeeks > 0 {
expire = t.Add(time.Hour * time.Duration(customExpireHours+(customExpireDays*24)+(customExpireWeeks*7*24)))
} else {
ttl := getStatusTTL(c.config.UserStatuses, slackStatus)
expire = t.Add(time.Hour * time.Duration(ttl))
}
u := userMeta{username: username, slackUserID: slackUserID, status: slackStatus}
c.cache.update(u, expire.Unix())
cfr = cacheFormResponse{"updated", username, ""}
} else if request.FormValue("delete") == "delete" {
log.Debug("cache admin: deleting cache entry for user: ", username)
err := c.cache.delete(username)
if err != nil {
cfr = cacheFormResponse{"deleted", username, err.Error()}
} else {
cfr = cacheFormResponse{Result: "deleted", Username: username}
}
} else {
log.Error("cache admin: unexpected form entry when dealing with: ", username)
}
}
promCacheAdmin.Inc()
testTemplate, err := template.New("index.html").ParseFiles("./templates/index.html")
if err != nil {
log.WithFields(log.Fields{"error": err}).Error("handling MergeEvent request.")
writer.WriteHeader(500)
_, err := writer.Write([]byte(fmt.Sprintf("error handling the event: %v", err)))
if err != nil {
log.WithFields(log.Fields{"error": err}).Error("failed to write fail header to external connection.")
}
return
}
err = testTemplate.Execute(writer, cacheResponseData{c.cache.getUserList(), cfr, c.config.UserStatuses, t.Local()})
if err != nil {
log.WithFields(log.Fields{"error": err}).Error("handling MergeEvent request.")
writer.WriteHeader(500)
_, err := writer.Write([]byte(fmt.Sprintf("error handling the event: %v", err)))
if err != nil {
log.WithFields(log.Fields{"error": err}).Error("failed to write fail header to external connection.")
}
return
}
}