1、实现项目队列转换节省资源

2、实现同一个项目通过配置限定转换线程
3、修复转换Word没有图片的问题
4、优化Mac下单页打印中文字体无法显示的问题

utils/gopool/gopool.go

@@ -0,0 +1,99 @@
+package gopool
+
+import (
+	"sync"
+	"errors"
+	"fmt"
+)
+var (
+	HandlerIsExistErr = errors.New("指定的键已存在")
+	WorkerChanClosedErr = errors.New("队列已关闭")
+)
+type ChannelHandler func()
+
+type entry struct {
+	handler ChannelHandler
+	key string
+}
+
+type ChannelPool struct {
+	maxWorkerNum int
+	maxPoolNum int
+	wait *sync.WaitGroup
+	cache *sync.Map
+	worker chan *entry
+	limit chan bool
+	isClosed bool
+	once *sync.Once
+}
+
+func NewChannelPool(maxWorkerNum, maxPoolNum int) (*ChannelPool) {
+	if maxWorkerNum <= 0 {
+		maxWorkerNum = 1
+	}
+	if maxPoolNum <= 0 {
+		maxWorkerNum = 100
+	}
+	return &ChannelPool{
+		maxWorkerNum: maxWorkerNum,
+		maxPoolNum: maxPoolNum,
+		wait: &sync.WaitGroup{},
+		cache: &sync.Map{},
+		worker: make(chan  *entry, maxWorkerNum),
+		limit: make(chan bool, maxWorkerNum),
+		isClosed: false,
+		once: &sync.Once{},
+	}
+}
+
+func (pool *ChannelPool) LoadOrStore(key string,value ChannelHandler) error  {
+	if pool.isClosed {
+		return WorkerChanClosedErr
+	}
+	if _,loaded := pool.cache.LoadOrStore(key,false); loaded {
+		return HandlerIsExistErr
+	}else{
+		pool.worker <- &entry{handler:value,key:key}
+		return  nil
+	}
+}
+
+func (pool *ChannelPool) Start() {
+	pool.once.Do(func() {
+		go func() {
+			for i :=0; i < pool.maxWorkerNum; i ++ {
+				pool.limit <- true
+			}
+			for {
+				actual, isClosed := <-pool.worker
+				//当队列被关闭，则跳出循环
+				if actual == nil && !isClosed {
+					fmt.Println("工作队列已关闭")
+					break
+				}
+				limit := <-pool.limit
+
+				if limit {
+					pool.wait.Add(1)
+					go func(actual *entry) {
+						defer pool.wait.Done()
+						defer func() {
+							pool.cache.Delete(actual.key)
+							pool.limit <- true
+						}()
+
+						actual.handler()
+
+					}(actual)
+				}
+			}
+		}()
+	})
+}
+
+func (pool *ChannelPool) Wait() {
+	close(pool.worker)
+
+	pool.wait.Wait()
+}
+