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trantor/lib/stats.go

148 lines
3.1 KiB
Go

package trantor
import (
log "github.com/cihub/seelog"
"net/http"
"strings"
"time"
"github.com/gorilla/mux"
"gitlab.com/trantor/trantor/lib/database"
"gitlab.com/trantor/trantor/lib/storage"
)
const (
stats_version = 2
statsChanSize = 100
)
type handler struct {
w http.ResponseWriter
r *http.Request
sess *Session
db database.DB
store storage.Store
template *Template
hostname string
ro bool
}
type StatsGatherer struct {
db database.DB
store storage.Store
template *Template
hostname string
channel chan statsRequest
ro bool
}
func InitStats(database database.DB, store storage.Store, hostname string, template *Template, ro bool) *StatsGatherer {
sg := StatsGatherer{
channel: make(chan statsRequest, statsChanSize),
db: database,
store: store,
template: template,
hostname: hostname,
ro: ro,
}
go sg.worker()
return &sg
}
func (sg StatsGatherer) Gather(function func(handler)) func(http.ResponseWriter, *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
log.Info("Query ", r.Method, " ", r.RequestURI)
h := handler{
store: sg.store,
db: sg.db,
template: sg.template,
hostname: sg.hostname,
w: w,
r: r,
sess: GetSession(r, sg.db),
ro: sg.ro,
}
function(h)
sg.channel <- statsRequest{time.Now(), mux.Vars(r), h.sess, r}
}
}
type statsRequest struct {
date time.Time
vars map[string]string
sess *Session
r *http.Request
}
func (sg StatsGatherer) worker() {
for req := range sg.channel {
stats := make(map[string]interface{})
appendFiles(req.r, stats)
appendMuxVars(req.vars, stats)
appendUrl(req.r, stats)
appendSession(req.sess, stats)
stats["version"] = stats_version
stats["method"] = req.r.Method
stats["date"] = req.date
sg.db.AddStats(stats)
}
}
func appendFiles(r *http.Request, stats map[string]interface{}) {
if r.Method == "POST" && r.MultipartForm != nil {
files := r.MultipartForm.File
for key := range files {
list := make([]string, len(files[key]))
for i, f := range files[key] {
list[i] = f.Filename
}
stats[key] = list
}
}
}
func appendMuxVars(vars map[string]string, stats map[string]interface{}) {
for key, value := range vars {
switch {
case key == "id":
stats["id"] = value
case key == "ids":
var objectIds []string
ids := strings.Split(value, "/")
for _, id := range ids {
objectIds = append(objectIds, id)
}
if len(objectIds) > 0 {
stats["ids"] = objectIds
stats["id"] = objectIds[0]
}
default:
stats[key] = value
}
}
}
func appendUrl(r *http.Request, stats map[string]interface{}) {
for key, value := range r.URL.Query() {
stats[key] = value
}
stats["host"] = r.Host
stats["path"] = r.URL.Path
pattern := strings.Split(r.URL.Path, "/")
if len(pattern) > 1 && pattern[1] != "" {
stats["section"] = pattern[1]
} else {
stats["section"] = "/"
}
}
func appendSession(sess *Session, stats map[string]interface{}) {
stats["session"] = sess.Id()
if sess.User != "" {
stats["user"] = sess.User
}
}