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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,39 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "labix.org/v2/mgo" | ||
| "labix.org/v2/mgo/bson" | ||
| "log" | ||
| ) | ||
|
|
||
| const capacity = 32768 | ||
|
|
||
| type EventStorageWorker struct { | ||
| } | ||
|
|
||
| func NewEventStorageWorker() (w *EventStorageWorker) { | ||
| return &EventStorageWorker{} | ||
| } | ||
|
|
||
| func (w *EventStorageWorker) Work(channel chan bson.M) { | ||
| config := GetConfig() | ||
| if config == nil { | ||
| log.Println("config is null ") | ||
| } | ||
| log.Println("EventsMongoHost : " + config.EventsMongoHost) | ||
| for { | ||
| event := <-channel | ||
| w.Save(config.EventsMongoHost, event) | ||
| } | ||
| } | ||
|
|
||
| func (w *EventStorageWorker) Save(mongoHost string, event bson.M) { | ||
| session, err := mgo.Dial(mongoHost) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| session.SetMode(mgo.Monotonic, true) | ||
| defer session.Close() | ||
| var collection = session.DB("notifications").C("events") | ||
| collection.Insert(event) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,162 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "labix.org/v2/mgo/bson" | ||
| "log" | ||
| "math/big" | ||
| ) | ||
|
|
||
| const ( | ||
| EV_NULL = 0 | ||
| EV_START = 1 | ||
| EV_STOP = 2 | ||
| EV_MYSQL_ERROR = 3 | ||
| EV_MYSQL_SUCCESS = 4 | ||
| EV_MONGO_ERROR = 5 | ||
| EV_MONGO_SUCCESS = 6 | ||
| ) | ||
|
|
||
| type BitSet struct { | ||
| bits big.Int | ||
| } | ||
|
|
||
| func (b *BitSet) Set(bit int) *BitSet { | ||
| b.bits.SetBit(&b.bits, int(bit), 1) | ||
| return b | ||
| } | ||
|
|
||
| func (b *BitSet) Clear(bit int) *BitSet { | ||
| b.bits.SetBit(&b.bits, bit, 0) | ||
| return b | ||
| } | ||
|
|
||
| func (b *BitSet) HasBit(bit int) bool { | ||
| return b.bits.Bit(bit) == 1 | ||
| } | ||
|
|
||
| func (b *BitSet) Flip(bit int) *BitSet { | ||
| if !b.HasBit(bit) { | ||
| return b.Set(bit) | ||
| } | ||
| return b.Clear(bit) | ||
| } | ||
|
|
||
| func (b BitSet) String() string { | ||
| return fmt.Sprintf("%b", &b.bits) | ||
| } | ||
|
|
||
| func EmptyBitSet() *BitSet { | ||
| return new(BitSet) | ||
| } | ||
|
|
||
| type Event struct { | ||
| Mask *BitSet // Mask of event | ||
| Datas string // Data of event | ||
| Name string // Name of event | ||
| } | ||
|
|
||
| type EventWatcher struct { | ||
| event chan *Event // Events are returned on this channel | ||
| done chan bool // Channel for sending a "quit message" | ||
| //storage chan bson.M | ||
| isClosed bool // Set to true when Close() is first called | ||
| eventsMask *BitSet | ||
| storageWorker *EventStorageWorker | ||
| config *Config | ||
| } | ||
|
|
||
| //Create a event watcher and set the mask of events to all | ||
| func NewEventWatcher(config *Config) (ew *EventWatcher) { | ||
| ew = new(EventWatcher) | ||
| ew.event = make(chan *Event) | ||
| ew.done = make(chan bool, 1) | ||
|
|
||
| ew.eventsMask = EmptyBitSet() | ||
| ew.eventsMask.Set(EV_START) | ||
| ew.eventsMask.Set(EV_STOP) | ||
| ew.eventsMask.Set(EV_MYSQL_ERROR) | ||
| ew.eventsMask.Set(EV_MYSQL_SUCCESS) | ||
| ew.eventsMask.Set(EV_MONGO_ERROR) | ||
| ew.eventsMask.Set(EV_MONGO_SUCCESS) | ||
|
|
||
| ew.storageWorker = NewEventStorageWorker() | ||
| //comment cause Save methode used from EventStorageWorker | ||
| //ew.storage = make(chan bson.M) | ||
| //go ew.storageWorker.Work(ew.storage) | ||
| return ew | ||
| } | ||
|
|
||
| func (eventWatcher *EventWatcher) publishEvent(event bson.M) { | ||
| log.Println("publishEvent : ", event) | ||
| eventWatcher.storageWorker.Save(config.EventsMongoHost, event) | ||
| } | ||
|
|
||
| //Handler dispatch events and flip the event type | ||
| //Flip is used to send one time the same type of notification | ||
| func (eventWatcher *EventWatcher) processEvent(event *Event) { | ||
| //log.Println("processEvent : ", event) | ||
| if event.Mask.HasBit(EV_START) { | ||
| var pushEvent = bson.M{"type": EV_START, "data": event.Datas} | ||
| eventWatcher.publishEvent(pushEvent) | ||
| } | ||
|
|
||
| if event.Mask.HasBit(EV_STOP) { | ||
| var pushEvent = bson.M{"type": EV_STOP, "data": event.Datas} | ||
| eventWatcher.publishEvent(pushEvent) | ||
| eventWatcher.done <- true | ||
| } | ||
|
|
||
| //Follow code can/has be refactored | ||
| //mysql parts | ||
| if event.Mask.HasBit(EV_MYSQL_ERROR) { | ||
| if eventWatcher.eventsMask.HasBit(EV_MYSQL_ERROR) { | ||
| var pushEvent = bson.M{"type": EV_MYSQL_ERROR, "data": event.Datas} | ||
| eventWatcher.publishEvent(pushEvent) | ||
| eventWatcher.eventsMask.Clear(EV_MYSQL_ERROR) | ||
| eventWatcher.eventsMask.Set(EV_MYSQL_SUCCESS) | ||
| } | ||
|
|
||
| } | ||
|
|
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| if event.Mask.HasBit(EV_MYSQL_SUCCESS) { | ||
| if eventWatcher.eventsMask.HasBit(EV_MYSQL_SUCCESS) { | ||
| var pushEvent = bson.M{"type": EV_MYSQL_SUCCESS, "data": event.Datas} | ||
| eventWatcher.publishEvent(pushEvent) | ||
| eventWatcher.eventsMask.Clear(EV_MYSQL_SUCCESS) | ||
| eventWatcher.eventsMask.Set(EV_MYSQL_ERROR) | ||
| } | ||
|
|
||
| } | ||
|
|
||
| //mongo parts | ||
|
|
||
| if event.Mask.HasBit(EV_MONGO_ERROR) { | ||
| if eventWatcher.eventsMask.HasBit(EV_MONGO_ERROR) { | ||
| var pushEvent = bson.M{"type": EV_MONGO_ERROR, "data": event.Datas} | ||
| eventWatcher.publishEvent(pushEvent) | ||
| eventWatcher.eventsMask.Clear(EV_MONGO_ERROR) | ||
| eventWatcher.eventsMask.Set(EV_MONGO_SUCCESS) | ||
| } | ||
|
|
||
| } | ||
|
|
||
| if event.Mask.HasBit(EV_MONGO_SUCCESS) { | ||
| if eventWatcher.eventsMask.HasBit(EV_MONGO_SUCCESS) { | ||
| var pushEvent = bson.M{"type": EV_MONGO_SUCCESS, "data": event.Datas} | ||
| eventWatcher.publishEvent(pushEvent) | ||
| eventWatcher.eventsMask.Clear(EV_MONGO_SUCCESS) | ||
| eventWatcher.eventsMask.Set(EV_MONGO_ERROR) | ||
| } | ||
|
|
||
| } | ||
| } | ||
|
|
||
| func (eventWatcher *EventWatcher) run() { | ||
| for { | ||
| select { | ||
| case c := <-eventWatcher.event: | ||
| eventWatcher.processEvent(c) | ||
| } | ||
| } | ||
| } |
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