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nnet/connection/pipeline.go

84 lines
1.3 KiB
Go

package connection
import (
"sync"
)
type (
Func func(c *Connection, v any) error
// Pipeline 消息管道
Pipeline interface {
Outbound() Channel
Inbound() Channel
}
pipeline struct {
outbound, inbound *pipelineChannel
}
Channel interface {
PushFront(h Func)
PushBack(h Func)
Process(c *Connection, v any) error
}
pipelineChannel struct {
mu sync.RWMutex
handlers []Func
}
)
func NewPipeline() Pipeline {
return &pipeline{
outbound: &pipelineChannel{},
inbound: &pipelineChannel{},
}
}
func (p *pipeline) Outbound() Channel {
return p.outbound
}
func (p *pipeline) Inbound() Channel {
return p.inbound
}
// PushFront 将func压入slice首位
func (p *pipelineChannel) PushFront(h Func) {
p.mu.Lock()
defer p.mu.Unlock()
handlers := make([]Func, len(p.handlers)+1)
handlers[0] = h
copy(handlers[1:], p.handlers)
p.handlers = handlers
}
// PushBack 将func压入slice末位
func (p *pipelineChannel) PushBack(h Func) {
p.mu.Lock()
defer p.mu.Unlock()
p.handlers = append(p.handlers, h)
}
// Process 处理所有的pipeline方法
func (p *pipelineChannel) Process(c *Connection, v any) error {
if len(p.handlers) < 1 {
return nil
}
p.mu.RLock()
defer p.mu.RUnlock()
for _, handler := range p.handlers {
err := handler(c, v)
if err != nil {
return err
}
}
return nil
}