remove reactor code from ethutil
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parent
d5bcc01eae
commit
af27264140
@ -1,87 +0,0 @@
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package ethutil
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import (
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"sync"
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)
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type ReactorEvent struct {
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mut sync.Mutex
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event string
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chans []chan React
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}
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// Post the specified reactor resource on the channels
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// currently subscribed
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func (e *ReactorEvent) Post(react React) {
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e.mut.Lock()
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defer e.mut.Unlock()
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for _, ch := range e.chans {
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go func(ch chan React) {
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ch <- react
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}(ch)
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}
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}
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// Add a subscriber to this event
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func (e *ReactorEvent) Add(ch chan React) {
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e.mut.Lock()
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defer e.mut.Unlock()
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e.chans = append(e.chans, ch)
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}
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// Remove a subscriber
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func (e *ReactorEvent) Remove(ch chan React) {
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e.mut.Lock()
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defer e.mut.Unlock()
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for i, c := range e.chans {
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if c == ch {
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e.chans = append(e.chans[:i], e.chans[i+1:]...)
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}
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}
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}
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// Basic reactor resource
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type React struct {
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Resource interface{}
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Event string
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}
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// The reactor basic engine. Acts as bridge
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// between the events and the subscribers/posters
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type ReactorEngine struct {
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patterns map[string]*ReactorEvent
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}
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func NewReactorEngine() *ReactorEngine {
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return &ReactorEngine{patterns: make(map[string]*ReactorEvent)}
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}
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// Subscribe a channel to the specified event
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func (reactor *ReactorEngine) Subscribe(event string, ch chan React) {
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ev := reactor.patterns[event]
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// Create a new event if one isn't available
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if ev == nil {
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ev = &ReactorEvent{event: event}
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reactor.patterns[event] = ev
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}
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// Add the channel to reactor event handler
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ev.Add(ch)
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}
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func (reactor *ReactorEngine) Unsubscribe(event string, ch chan React) {
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ev := reactor.patterns[event]
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if ev != nil {
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ev.Remove(ch)
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}
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}
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func (reactor *ReactorEngine) Post(event string, resource interface{}) {
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ev := reactor.patterns[event]
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if ev != nil {
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ev.Post(React{Resource: resource, Event: event})
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}
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}
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@ -1,30 +0,0 @@
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package ethutil
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import "testing"
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func TestReactorAdd(t *testing.T) {
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engine := NewReactorEngine()
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ch := make(chan React)
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engine.Subscribe("test", ch)
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if len(engine.patterns) != 1 {
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t.Error("Expected patterns to be 1, got", len(engine.patterns))
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}
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}
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func TestReactorEvent(t *testing.T) {
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engine := NewReactorEngine()
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// Buffer 1, so it doesn't block for this test
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ch := make(chan React, 1)
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engine.Subscribe("test", ch)
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engine.Post("test", "hello")
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value := <-ch
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if val, ok := value.Resource.(string); ok {
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if val != "hello" {
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t.Error("Expected Resource to be 'hello', got", val)
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}
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} else {
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t.Error("Unable to cast")
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}
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}
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