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Add test

pull/1842/head
Ethan Frey 7 years ago
parent
commit
a816ff0bab
4 changed files with 233 additions and 2 deletions
  1. +9
    -0
      Makefile
  2. +175
    -2
      README.md
  3. +3
    -0
      events.go
  4. +46
    -0
      events_test.go

+ 9
- 0
Makefile View File

@ -0,0 +1,9 @@
.PHONY: docs
REPO:=github.com/tendermint/go-events
docs:
@go get github.com/davecheney/godoc2md
godoc2md $(REPO) > README.md
test:
go test -v ./...

+ 175
- 2
README.md View File

@ -1,2 +1,175 @@
# go-events
PubSub in Go with event caching.
# events
`import "github.com/tendermint/go-events"`
* [Overview](#pkg-overview)
* [Index](#pkg-index)
## <a name="pkg-overview">Overview</a>
Pub-Sub in go with event caching
## <a name="pkg-index">Index</a>
* [type EventCache](#EventCache)
* [func NewEventCache(evsw Fireable) *EventCache](#NewEventCache)
* [func (evc *EventCache) FireEvent(event string, data EventData)](#EventCache.FireEvent)
* [func (evc *EventCache) Flush()](#EventCache.Flush)
* [type EventCallback](#EventCallback)
* [type EventData](#EventData)
* [type EventSwitch](#EventSwitch)
* [func NewEventSwitch() EventSwitch](#NewEventSwitch)
* [type Eventable](#Eventable)
* [type Fireable](#Fireable)
#### <a name="pkg-files">Package files</a>
[event_cache.go](/src/github.com/tendermint/go-events/event_cache.go) [events.go](/src/github.com/tendermint/go-events/events.go) [log.go](/src/github.com/tendermint/go-events/log.go)
## <a name="EventCache">type</a> [EventCache](/src/target/event_cache.go?s=152:215#L1)
``` go
type EventCache struct {
// contains filtered or unexported fields
}
```
An EventCache buffers events for a Fireable
All events are cached. Filtering happens on Flush
### <a name="NewEventCache">func</a> [NewEventCache](/src/target/event_cache.go?s=275:320#L5)
``` go
func NewEventCache(evsw Fireable) *EventCache
```
Create a new EventCache with an EventSwitch as backend
### <a name="EventCache.FireEvent">func</a> (\*EventCache) [FireEvent](/src/target/event_cache.go?s=534:596#L19)
``` go
func (evc *EventCache) FireEvent(event string, data EventData)
```
Cache an event to be fired upon finality.
### <a name="EventCache.Flush">func</a> (\*EventCache) [Flush](/src/target/event_cache.go?s=773:803#L26)
``` go
func (evc *EventCache) Flush()
```
Fire events by running evsw.FireEvent on all cached events. Blocks.
Clears cached events
## <a name="EventCallback">type</a> [EventCallback](/src/target/events.go?s=4182:4221#L175)
``` go
type EventCallback func(data EventData)
```
## <a name="EventData">type</a> [EventData](/src/target/events.go?s=236:287#L4)
``` go
type EventData interface {
}
```
Generic event data can be typed and registered with tendermint/go-wire
via concrete implementation of this interface
## <a name="EventSwitch">type</a> [EventSwitch](/src/target/events.go?s=553:760#L19)
``` go
type EventSwitch interface {
Service
Fireable
AddListenerForEvent(listenerID, event string, cb EventCallback)
RemoveListenerForEvent(event string, listenerID string)
RemoveListener(listenerID string)
}
```
### <a name="NewEventSwitch">func</a> [NewEventSwitch](/src/target/events.go?s=902:935#L36)
``` go
func NewEventSwitch() EventSwitch
```
## <a name="Eventable">type</a> [Eventable](/src/target/events.go?s=371:433#L10)
``` go
type Eventable interface {
SetEventSwitch(evsw EventSwitch)
}
```
reactors and other modules should export
this interface to become eventable
## <a name="Fireable">type</a> [Fireable](/src/target/events.go?s=483:551#L15)
``` go
type Fireable interface {
FireEvent(event string, data EventData)
}
```
an event switch or cache implements fireable
- - -
Generated by [godoc2md](http://godoc.org/github.com/davecheney/godoc2md)

+ 3
- 0
events.go View File

@ -1,3 +1,6 @@
/*
Pub-Sub in go with event caching
*/
package events
import (


+ 46
- 0
events_test.go View File

@ -5,6 +5,8 @@ import (
"math/rand"
"testing"
"time"
"github.com/stretchr/testify/assert"
)
// TestAddListenerForEventFireOnce sets up an EventSwitch, subscribes a single
@ -207,6 +209,50 @@ func TestAddAndRemoveListener(t *testing.T) {
}
}
// TestRemoveListener does basic tests on adding and removing
func TestRemoveListener(t *testing.T) {
evsw := NewEventSwitch()
started, err := evsw.Start()
if started == false || err != nil {
t.Errorf("Failed to start EventSwitch, error: %v", err)
}
count := 10
sum1, sum2 := 0, 0
// add some listeners and make sure they work
evsw.AddListenerForEvent("listener", "event1",
func(data EventData) {
sum1 += 1
})
evsw.AddListenerForEvent("listener", "event2",
func(data EventData) {
sum2 += 1
})
for i := 0; i < count; i++ {
evsw.FireEvent("event1", true)
evsw.FireEvent("event2", true)
}
assert.Equal(t, count, sum1)
assert.Equal(t, count, sum2)
// remove one by event and make sure it is gone
evsw.RemoveListenerForEvent("event2", "listener")
for i := 0; i < count; i++ {
evsw.FireEvent("event1", true)
evsw.FireEvent("event2", true)
}
assert.Equal(t, count*2, sum1)
assert.Equal(t, count, sum2)
// remove the listener entirely and make sure both gone
evsw.RemoveListener("listener")
for i := 0; i < count; i++ {
evsw.FireEvent("event1", true)
evsw.FireEvent("event2", true)
}
assert.Equal(t, count*2, sum1)
assert.Equal(t, count, sum2)
}
// TestAddAndRemoveListenersAsync sets up an EventSwitch, subscribes two
// listeners to three events, and fires a thousand integers for each event.
// These two listeners serve as the baseline validation while other listeners


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