Exemplo n.º 1
0
func TestPriorityChannel(t *testing.T) {
	go timeoutTest(t, 11*time.Second)
	p := newPriorityChannel()
	done := make(chan struct{})

	u1, _ := url.Parse("http://www.google.fr/1")
	u2, _ := url.Parse("http://www.google.fr/2")
	u3, _ := url.Parse("http://www.yahoo.fr/1")
	u4, _ := url.Parse("http://www.yahoo.fr/2")
	u5, _ := url.Parse("http://www.bing.fr/1")
	u6, _ := url.Parse("http://www.bing.fr/2")

	go func() {
		for u := range p.Out {
			hostName, _ := url.StripWWW(u.Url.Host)
			t.Log(u, hostName)
			p.doneWithHost(hostName)
		}
		done <- struct{}{}
	}()

	p.addUrl(frontier.UrlRequest{*u1, frontier.NoopCtxFunc}, 2)
	p.addUrl(frontier.UrlRequest{*u2, frontier.NoopCtxFunc}, 2)
	p.addUrl(frontier.UrlRequest{*u3, frontier.NoopCtxFunc}, 2)
	p.addUrl(frontier.UrlRequest{*u4, frontier.NoopCtxFunc}, 2)
	p.addUrl(frontier.UrlRequest{*u5, frontier.NoopCtxFunc}, 2)
	p.addUrl(frontier.UrlRequest{*u6, frontier.NoopCtxFunc}, 2)

	p.Stop()
	<-done
}
Exemplo n.º 2
0
func (s *Store) HostIgnoreWWW(hostName string) error {
	symbHost, hadWWW := url.StripWWW(hostName)
	if !hadWWW {
		symbHost = "www." + hostName
	}

	return s.createSymbHostLink(hostName, symbHost)
}
Exemplo n.º 3
0
// set options attached to an host :
//
//	- how many concurrent connections are allowed
//
//	- delay between connections
func (c *Limiter) SetHostOptions(hostName string, accessDelay time.Duration, maxConnections int) {
	hostName, _ = url.StripWWW(hostName)

	pool := c.getHostPool(hostName)
	pool.accessDelay = accessDelay
	pool.maxToken = maxConnections
	pool.token = maxConnections
}
Exemplo n.º 4
0
func (c *Limiter) getHostPool(host string) *hostPool {
	host, _ = url.StripWWW(host)
	if c.hosts[host] == nil {
		c.hosts[host] = newHostPool(20, c.defaultAccessDelay, c.maxConnectionsPerHost)
	}

	return c.hosts[host]
}
Exemplo n.º 5
0
func (c *Limiter) checkHost(hostName string) {
	hostName, _ = url.StripWWW(hostName)

	host := c.hosts[hostName]

	if !host.IsEmpty() && host.GetToken() {
		req := host.waitingRequest.Pop()
		req.ready <- struct{}{}
	}

}
Exemplo n.º 6
0
func (p *priorityChannel) newHost(hostName string) *hostInfo {
	h := hostInfo{name: hostName, priority: 9, delay: defaultDelay}

	hostStrip, _ := url.StripWWW(hostName)
	if d, ok := p.hostDelay[hostStrip]; ok {
		h.delay = d
	}

	heap.Push(p.OutQueue, &h)

	return &h
}
Exemplo n.º 7
0
func (p *priorityChannel) addUrl(request frontier.UrlRequest, priority int) {
	p.Lock()
	defer p.Unlock()

	hostName, _ := url.StripWWW(request.Url.Host)

	host := p.OutQueue.getHost(hostName)
	if host == nil {
		p.count += 1
		host = p.newHost(hostName)
		p.dchan.pushElement(delayedElement{hostName, time.Now()})
	}

	host.urls[priority] = append(host.urls[priority], request)
	host.count += 1
	p.count += 1

	if priority < host.priority {
		p.OutQueue.UpdatePriority(hostName, priority)
	}

}
Exemplo n.º 8
0
func bindHostToCtx(ctx context.Context, host string) context.Context {
	host, _ = url.StripWWW(host)

	return context.WithValue(ctx, ctxKey, host)
}
Exemplo n.º 9
0
func (p *priorityChannel) SetHostDelay(hostName string, delay time.Duration) {
	hostName, _ = url.StripWWW(hostName)

	p.hostDelay[hostName] = delay
}