From 9313fa63f959f8a5c3609c187120711a484a4c57 Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Thu, 8 Nov 2018 13:26:29 +0100 Subject: [PATCH] event/filter: delete unused package (#18063) --- event/filter/filter.go | 95 ---------------------------------- event/filter/filter_test.go | 60 --------------------- event/filter/generic_filter.go | 48 ----------------- 3 files changed, 203 deletions(-) delete mode 100644 event/filter/filter.go delete mode 100644 event/filter/filter_test.go delete mode 100644 event/filter/generic_filter.go diff --git a/event/filter/filter.go b/event/filter/filter.go deleted file mode 100644 index a6fe46d6a0..0000000000 --- a/event/filter/filter.go +++ /dev/null @@ -1,95 +0,0 @@ -// Copyright 2014 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -// Package filter implements event filters. -package filter - -import "reflect" - -type Filter interface { - Compare(Filter) bool - Trigger(data interface{}) -} - -type FilterEvent struct { - filter Filter - data interface{} -} - -type Filters struct { - id int - watchers map[int]Filter - ch chan FilterEvent - - quit chan struct{} -} - -func New() *Filters { - return &Filters{ - ch: make(chan FilterEvent), - watchers: make(map[int]Filter), - quit: make(chan struct{}), - } -} - -func (f *Filters) Start() { - go f.loop() -} - -func (f *Filters) Stop() { - close(f.quit) -} - -func (f *Filters) Notify(filter Filter, data interface{}) { - f.ch <- FilterEvent{filter, data} -} - -func (f *Filters) Install(watcher Filter) int { - f.watchers[f.id] = watcher - f.id++ - - return f.id - 1 -} - -func (f *Filters) Uninstall(id int) { - delete(f.watchers, id) -} - -func (f *Filters) loop() { -out: - for { - select { - case <-f.quit: - break out - case event := <-f.ch: - for _, watcher := range f.watchers { - if reflect.TypeOf(watcher) == reflect.TypeOf(event.filter) { - if watcher.Compare(event.filter) { - watcher.Trigger(event.data) - } - } - } - } - } -} - -func (f *Filters) Match(a, b Filter) bool { - return reflect.TypeOf(a) == reflect.TypeOf(b) && a.Compare(b) -} - -func (f *Filters) Get(i int) Filter { - return f.watchers[i] -} diff --git a/event/filter/filter_test.go b/event/filter/filter_test.go deleted file mode 100644 index dcc9112453..0000000000 --- a/event/filter/filter_test.go +++ /dev/null @@ -1,60 +0,0 @@ -// Copyright 2014 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package filter - -import ( - "testing" - "time" -) - -// Simple test to check if baseline matching/mismatching filtering works. -func TestFilters(t *testing.T) { - fm := New() - fm.Start() - - // Register two filters to catch posted data - first := make(chan struct{}) - fm.Install(Generic{ - Str1: "hello", - Fn: func(data interface{}) { - first <- struct{}{} - }, - }) - second := make(chan struct{}) - fm.Install(Generic{ - Str1: "hello1", - Str2: "hello", - Fn: func(data interface{}) { - second <- struct{}{} - }, - }) - // Post an event that should only match the first filter - fm.Notify(Generic{Str1: "hello"}, true) - fm.Stop() - - // Ensure only the mathcing filters fire - select { - case <-first: - case <-time.After(100 * time.Millisecond): - t.Error("matching filter timed out") - } - select { - case <-second: - t.Error("mismatching filter fired") - case <-time.After(100 * time.Millisecond): - } -} diff --git a/event/filter/generic_filter.go b/event/filter/generic_filter.go deleted file mode 100644 index 467bf01bec..0000000000 --- a/event/filter/generic_filter.go +++ /dev/null @@ -1,48 +0,0 @@ -// Copyright 2014 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package filter - -type Generic struct { - Str1, Str2, Str3 string - Data map[string]struct{} - - Fn func(data interface{}) -} - -// self = registered, f = incoming -func (self Generic) Compare(f Filter) bool { - var strMatch = true - - filter := f.(Generic) - if (len(self.Str1) > 0 && filter.Str1 != self.Str1) || - (len(self.Str2) > 0 && filter.Str2 != self.Str2) || - (len(self.Str3) > 0 && filter.Str3 != self.Str3) { - strMatch = false - } - - for k := range self.Data { - if _, ok := filter.Data[k]; !ok { - return false - } - } - - return strMatch -} - -func (self Generic) Trigger(data interface{}) { - self.Fn(data) -}