forked from mirror/go-ethereum
parent
a17a1f9208
commit
1c7fd62e57
@ -1,70 +0,0 @@ |
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package filter |
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import "reflect" |
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type Filter interface { |
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Compare(Filter) bool |
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Trigger(data interface{}) |
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} |
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type FilterEvent struct { |
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filter Filter |
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data interface{} |
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} |
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type Filters struct { |
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id int |
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watchers map[int]Filter |
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ch chan FilterEvent |
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quit chan struct{} |
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} |
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func New() *Filters { |
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return &Filters{ |
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ch: make(chan FilterEvent), |
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watchers: make(map[int]Filter), |
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quit: make(chan struct{}), |
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} |
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} |
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func (self *Filters) Start() { |
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go self.loop() |
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} |
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func (self *Filters) Stop() { |
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close(self.quit) |
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} |
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func (self *Filters) Notify(filter Filter, data interface{}) { |
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self.ch <- FilterEvent{filter, data} |
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} |
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func (self *Filters) Install(watcher Filter) int { |
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self.watchers[self.id] = watcher |
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self.id++ |
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return self.id - 1 |
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} |
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func (self *Filters) Uninstall(id int) { |
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delete(self.watchers, id) |
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} |
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func (self *Filters) loop() { |
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out: |
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for { |
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select { |
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case <-self.quit: |
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break out |
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case event := <-self.ch: |
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for _, watcher := range self.watchers { |
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if reflect.TypeOf(watcher) == reflect.TypeOf(event.filter) { |
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if watcher.Compare(event.filter) { |
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watcher.Trigger(event.data) |
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} |
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} |
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} |
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} |
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} |
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} |
@ -1,34 +0,0 @@ |
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package filter |
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import "testing" |
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func TestFilters(t *testing.T) { |
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var success bool |
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var failure bool |
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fm := New() |
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fm.Start() |
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fm.Install(Generic{ |
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Str1: "hello", |
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Fn: func(data interface{}) { |
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success = data.(bool) |
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}, |
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}) |
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fm.Install(Generic{ |
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Str1: "hello1", |
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Str2: "hello", |
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Fn: func(data interface{}) { |
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failure = true |
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}, |
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}) |
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fm.Notify(Generic{Str1: "hello"}, true) |
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fm.Stop() |
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if !success { |
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t.Error("expected 'hello' to be posted") |
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} |
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if failure { |
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t.Error("hello1 was triggered") |
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} |
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} |
@ -1,22 +0,0 @@ |
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package filter |
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type Generic struct { |
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Str1, Str2, Str3 string |
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Fn func(data interface{}) |
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} |
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func (self Generic) Compare(f Filter) bool { |
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filter := f.(Generic) |
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if (len(self.Str1) == 0 || filter.Str1 == self.Str1) && |
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(len(self.Str2) == 0 || filter.Str2 == self.Str2) && |
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(len(self.Str3) == 0 || filter.Str3 == self.Str3) { |
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return true |
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} |
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return false |
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} |
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func (self Generic) Trigger(data interface{}) { |
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self.Fn(data) |
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} |
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