131 lines
2.9 KiB
Go
131 lines
2.9 KiB
Go
/*
|
|
* Copyright (c) 2015 Alex Yatskov <alex@foosoft.net>
|
|
* Author: Alex Yatskov <alex@foosoft.net>
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
|
* this software and associated documentation files (the "Software"), to deal in
|
|
* the Software without restriction, including without limitation the rights to
|
|
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
|
* the Software, and to permit persons to whom the Software is furnished to do so,
|
|
* subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in all
|
|
* copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
|
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
|
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
|
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
package goldsmith
|
|
|
|
import (
|
|
"sync"
|
|
"sync/atomic"
|
|
)
|
|
|
|
type stage struct {
|
|
gs *goldsmith
|
|
input, output chan *file
|
|
}
|
|
|
|
func newStage(gs *goldsmith) *stage {
|
|
s := &stage{gs: gs, output: make(chan *file)}
|
|
if len(gs.stages) > 0 {
|
|
s.input = gs.stages[len(gs.stages)-1].output
|
|
}
|
|
|
|
gs.stages = append(gs.stages, s)
|
|
return s
|
|
}
|
|
|
|
func (s *stage) chain(p Plugin) {
|
|
defer close(s.output)
|
|
|
|
name, flags, err := p.Initialize()
|
|
if err != nil {
|
|
s.gs.fault(name, nil, err)
|
|
return
|
|
}
|
|
|
|
accept, _ := p.(Accepter)
|
|
proc, _ := p.(Processor)
|
|
fin, _ := p.(Finalizer)
|
|
|
|
var (
|
|
wg sync.WaitGroup
|
|
mtx sync.Mutex
|
|
batch []File
|
|
)
|
|
|
|
dispatch := func(f *file) {
|
|
if flags&PLUGIN_FLAG_BATCH == PLUGIN_FLAG_BATCH {
|
|
atomic.AddInt64(&s.gs.idle, 1)
|
|
mtx.Lock()
|
|
batch = append(batch, f)
|
|
mtx.Unlock()
|
|
} else {
|
|
s.output <- f
|
|
}
|
|
}
|
|
|
|
for f := range s.input {
|
|
if accept != nil && !accept.Accept(f) {
|
|
s.output <- f
|
|
} else if proc == nil {
|
|
dispatch(f)
|
|
} else {
|
|
wg.Add(1)
|
|
go func(f *file) {
|
|
defer wg.Done()
|
|
f.rewind()
|
|
keep, err := proc.Process(s, f)
|
|
if err != nil {
|
|
s.gs.fault(name, f, err)
|
|
} else if keep {
|
|
dispatch(f)
|
|
} else {
|
|
atomic.AddInt64(&s.gs.active, -1)
|
|
}
|
|
}(f)
|
|
}
|
|
}
|
|
|
|
wg.Wait()
|
|
|
|
if fin != nil {
|
|
if err := fin.Finalize(s); err != nil {
|
|
s.gs.fault(name, nil, err)
|
|
}
|
|
}
|
|
|
|
for _, f := range batch {
|
|
atomic.AddInt64(&s.gs.idle, -1)
|
|
s.output <- f.(*file)
|
|
}
|
|
}
|
|
|
|
//
|
|
// Context Implementation
|
|
//
|
|
|
|
func (s *stage) DispatchFile(f File) {
|
|
atomic.AddInt64(&s.gs.active, 1)
|
|
s.output <- f.(*file)
|
|
}
|
|
|
|
func (s *stage) ReferenceFile(path string) {
|
|
s.gs.referenceFile(path)
|
|
}
|
|
|
|
func (s *stage) SrcDir() string {
|
|
return s.gs.srcDir
|
|
}
|
|
|
|
func (s *stage) DstDir() string {
|
|
return s.gs.dstDir
|
|
}
|