Esempio n. 1
0
func (c *Client) Get(ctx context.Context, url string) (r *http.Response, err error) {
	ctx = trace.Enter(ctx, "HTTP")

	if maximum := c.MaximumInFlight; maximum != 0 {
		defer atomic.AddInt64(&c.inflight, -1)

		// too many in-flight?
		if n := atomic.AddInt64(&c.inflight, 1); n >= maximum {
			trace.Leave(ctx, "Errors.TooManyInFlight")
			return
		}
	}

	r, err = defaults.Client(c.Client).Get(url)
	if err != nil {
		atomic.AddInt64(&c.count, -1)
		trace.Error(ctx, "Errors.Fail", err)
		return
	}

	if r.StatusCode != http.StatusOK && r.StatusCode != http.StatusNoContent {
		atomic.AddInt64(&c.count, -1)
		trace.Error(ctx, "Errors.Status", fmt.Errorf("%s", r.Status))
		return
	}

	trace.Leave(ctx, "Check")
	return
}
Esempio n. 2
0
// Process sends a request to query the /check endpoint.
// The response is attached to the request.
func (c *Client) Process(ctx context.Context, r rtb.Request) (err error) {
	ctx = trace.Enter(ctx, "Forensiq")

	// ready?
	if !c.HTTP.Ready() {
		err = ErrUnavailable
		trace.Error(ctx, "Errors.Ready", err)
		return
	}

	var args url.Values

	// fast path in case the request is already prepared
	if p, ok := r.(*request); ok {
		args = p.values
	} else {
		args, err = c.prepare(r)
		if err != nil {
			trace.Error(ctx, "Errors.Prepare", err)
			return
		}
	}

	qs := args.Encode()

	// look into the memory cache or perform the query
	value := c.fromCache(qs)
	if value != nil {
		trace.Count(ctx, "CacheHit", 1)
	} else {
		value, err = c.query(ctx, qs)
		if err != nil {
			trace.Error(ctx, "Errors.Request", err)
			return
		}

		c.intoCache(qs, value)
	}

	// hold the result
	r.Attach(defaults.String(c.Target, "forensiq"), value)

	trace.Leave(ctx, "Check")
	return
}
Esempio n. 3
0
func (e *Exchange) forensiqRiskScore(ctx context.Context, r rtb.Request) (value float64) {
	ctx = trace.Enter(ctx, "Forensiq")

	result, err := e.Client.NewRequest(r)
	if err != nil {
		trace.Error(ctx, "Error.NewRequest", err)
		return
	}

	p := result.(rtb.Processor)

	if err := p.Process(ctx, result); err != nil {
		trace.Error(ctx, "Error.Process", err)
		return
	}

	resp := result.Component("forensiq")
	if resp == nil {
		trace.Error(ctx, "Error.NoResponse", err)
		return
	}

	extractor, ok := resp.(rtb.Extractor)
	if !ok {
		trace.Error(ctx, "Error.NoExtractor", err)
		return
	}

	score := extractor.Extract("riskScore")
	if score == nil {
		trace.Leave(ctx, "Error.NoRiskScore")
		return
	}

	value, ok = score.(float64)
	if !ok {
		trace.Leave(ctx, "Error.NoRiskScoreValue")
		return
	}

	trace.Leave(ctx, "Requested")
	return
}
Esempio n. 4
0
func (e *NoExchange) ServeHTTP(ctx context.Context, w http.ResponseWriter, r *http.Request) {
	ctx = trace.Enter(ctx, "Request")

	vast := func() {
		value := []byte(`<VAST xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="vast.xsd" version="2.0"/>`)
		w.Header().Set("Content-Type", "application/xml")
		w.Header().Set("Content-Length", fmt.Sprintf("%d", len(value)))
		w.Write(value)
	}

	u := e.URL
	if list := strings.Split(u, ","); len(list) > 1 {
		n := atomic.AddInt64(&e.random, 1)
		u = list[n%int64(len(list))]
	}

	req, err := http.NewRequest("GET", u+r.URL.Path, nil)
	if err != nil {
		trace.Error(ctx, "Errors.Request", err)
		vast()
		return
	}

	if _, err := url.QueryUnescape(r.URL.RawQuery); err != nil {
		log.Println(r.URL.RawQuery)
		trace.Error(ctx, "Errors.BadQueryString", err)
		vast()
		return
	}

	values := r.URL.Query()

	for k, v := range values {
		p, ok := parameters[k]
		if !ok || len(v) != 1 || v[0] == "" {
			delete(values, k)
			continue
		}

		if _, err := p.Parse(v[0]); err != nil {
			delete(values, k)
			continue
		}
	}

	values.Set("id", NewUUID())

	req.URL.RawQuery = values.Encode()

	n := atomic.AddInt64(&e.inflight, 1)
	if n > 32 {
		atomic.AddInt64(&e.inflight, -1)
		trace.Leave(ctx, "Errors.TooManyInFlight")
		vast()
		return
	}

	result := make(chan func() (*http.Response, error), 1)
	go func() {
		c := e.Client
		if nil == c {
			c = client
		}

		resp, err := c.Do(req)
		result <- func() (*http.Response, error) {
			return resp, err
		}

		atomic.AddInt64(&e.inflight, -1)
	}()

	select {
	case <-time.After(50 * time.Millisecond):
		trace.Leave(ctx, "Errors.Timeout")
		vast()

		go func() {
			f := <-result

			resp, err := f()
			if err != nil {
				//trace.Error(ctx, "Errors.TimeoutFailed", err)
				return
			}

			io.Copy(ioutil.Discard, resp.Body)
			resp.Body.Close()
		}()

		return
	case f := <-result:
		resp, err := f()
		if err != nil {
			trace.Error(ctx, "Errors.Failed", err)
			vast()
			return
		}

		h := w.Header()
		for k, v := range resp.Header {
			h[k] = v
		}

		if _, err := io.Copy(w, resp.Body); err != nil {
			trace.Error(ctx, "Errors.Copy", err)
			vast()
			return
		}

		resp.Body.Close()
	}

	trace.Leave(ctx, "Done")
	return
}
Esempio n. 5
0
func (e *Exchange) ServeHTTP(ctx context.Context, w http.ResponseWriter, r *http.Request) {
	ctx = trace.Enter(ctx, "OpenRTB")

	body, err := ioutil.ReadAll(r.Body)
	if err != nil {
		trace.Error(ctx, "Errors.Read", err)
		w.WriteHeader(http.StatusNoContent)
		return
	}

	value := &jq.Value{}

	if err := value.Unmarshal(body); err != nil {
		trace.Error(ctx, "Errors.Unmarshal", err)
		w.WriteHeader(http.StatusNoContent)
		return
	}

	p := value.NewQuery()
	impid, err := p.String("imp", "@0", "id")
	if err != nil {
		trace.Error(ctx, "Errors.MissingImpressionID", err)
		w.WriteHeader(http.StatusNoContent)
		return
	}

	q := value.NewQuery()
	if err := q.FindObject("imp", "@0", "ext", "creative-ids"); err != nil {
		trace.Error(ctx, "Errors.MissingIDs", err)
		w.WriteHeader(http.StatusNoContent)
		return
	}

	allowed := make(map[string][]string)
	if q.Down() {
		for {
			if q.Down() {
				list := make([]string, 0, q.Count())
				for {
					list = append(list, q.Value())
					if q.Next() == false {
						break
					}
				}

				q.Up()
				allowed[q.Key()] = list
			}

			if q.Next() == false {
				break
			}
		}
	}

	if len(allowed) == 0 {
		trace.Leave(ctx, "NoAllowedBidders")
		w.WriteHeader(http.StatusNoContent)
		return
	}

	ids := make([]string, 0, len(allowed))
	for i := range allowed {
		ids = append(ids, i)
	}

	bidders := e.Bidders.Bidders(ids)

	bestPrice := ""
	bestPriority := ""
	best := -1
	for i := range bidders {
		if bidders[i] == nil {
			continue
		}

		price, priority := bidders[i].Bid(ctx)
		if price == "" {
			continue
		}

		if best != -1 {
			if len(priority) < len(bestPriority) {
				continue
			}

			if len(priority) == len(bestPriority) && priority < bestPriority {
				continue
			}

			if priority == bestPriority {
				if len(price) < len(bestPrice) {
					continue
				}

				if len(price) == len(bestPrice) && price < bestPrice {
					continue
				}
			}
		}

		bestPrice = price
		bestPriority = priority
		best = i
	}

	if best == -1 {
		trace.Leave(ctx, "NoAllowedBidders")
		w.WriteHeader(http.StatusNoContent)
		return
	}

	text := `{"seatbid":[{"bid":[{"impid":"%s","price":%f,"crid":"%s","ext":{"priority":%s,"external-id":%s}}]}]}`

	cpm := 0.0
	if money, err := strconv.Atoi(strings.TrimSuffix(bestPrice, "USD/1M")); err != nil {
		trace.Error(ctx, "Errors.Price", err)
		w.WriteHeader(http.StatusNoContent)
		return
	} else {
		cpm = float64(money) / 1000.0
	}

	cid := ids[best]

	augmenters := bidders[best].Augmenters
	if augmenters != nil {
		if f := augmenters.Forensiq; e.Client != nil && f != nil {
			r := &rtb.Components{}
			r.Attach("fields", value)

			score := e.forensiqRiskScore(ctx, r)
			trace.Record(ctx, "Score", score)

			if score > f.Configuration.RiskScore {
				trace.Leave(ctx, "ForensiqRiskScore")
				w.WriteHeader(http.StatusNoContent)
				return
			}
		}
	}

	crid := allowed[cid][0]

	b := string(body)
	if strings.Contains(b, cid) == false {
		log.Println(b)
		log.Println(allowed, ids, cid, crid, best)
	}

	w.Header().Set("Content-Type", "application/json")
	if _, err := fmt.Fprintf(w, text, impid, cpm, crid, bestPriority, cid); err != nil {
		trace.Error(ctx, "Errors.Response", err)
		return
	}

	//jsons.Put(value)

	trace.Leave(ctx, "Responded")
}