// Fires up the EntityManager service. Once started, the service will pull
// the latest content (documents and entities) from the configured ContentSource
// calculate some aggreate stats on them, and then make the stats available to
// this web app.
func startEntityManager(cfg AppConfig, contentSource server.ContentSource) *server.EntityManager {
// Create and configure a new EntityManager object.
entityManager := server.NewEntityManager(server.EntityManagerConfig{
TimeRanges: cfg.TimeRanges,
ContentSource: contentSource,
})
now := unixtime.Now()
// If it exists, load global content saved prior to previous app shutdown.
dataDir := cfg.DataDir
if server.FileExists(dataDir) {
logger.Printf("Loading saved content from %v", dataDir)
entityManager.LoadState(dataDir, now)
entityManager.ContentDAO.Load(dataDir)
} else {
logger.Printf("Loading recent content directly from content source into content buffer.")
entityManager.PreFill(now.Subtract(cfg.DataPreFetchWindow), now)
}
logger.Printf("Calculating entity stats for the first time...")
entityManager.RefreshStats(now)
refreshStatsLock = &sync.Mutex{}
logger.Printf("Starting MemDb content polling loop.")
go func() {
// The show must go on. Trap any panics, log them as an error, and then
// continue to attempt to get more data from MemDb service.
for {
func() {
defer func() {
if r := recover(); r != nil {
logger.Printf("ERROR: unexpected application error: \n%v\n\n", r)
debug.PrintStack()
}
}()
ticker := time.NewTicker(cfg.RefreshInterval)
for _ = range ticker.C {
refreshStatsLock.Lock()
startTime := time.Now()
entityManager.FetchMoreContent(unixtime.Now())
logger.Printf("entityManager.FetchMoreContent() took %v", time.Since(startTime))
refreshStatsLock.Unlock()
}
}()
}
}()
return entityManager
}
// Sets the 'LastLogin' timestamp to the current system time.
func (me *UserDb) SetLastLoginToNow(userId int) {
for i, _ := range me.users {
user := &me.users[i]
if user.Id == userId {
user.LastLogin = unixtime.Now()
}
}
}
func TestSetLastLoginToNow(t *testing.T) {
userId := 100
userEmail := "*****@*****.**"
userDb := UserDb{
users: []User{
User{Id: userId, Email: userEmail},
},
}
userDb.SetLastLoginToNow(userId)
user, userExists := userDb.GetUserByEmail(userEmail)
assert.True(t, userExists)
assert.Equal(t, unixtime.Now(), user.LastLogin)
}