HTTP Client can be changed now. Docs updated.

README.md

@@ -58,7 +58,6 @@ func quotesParse(g *geziyor.Geziyor, r *geziyor.Response) {
 
 See [tests](https://github.com/geziyor/geziyor/blob/master/geziyor_test.go) for more usage examples.
 
-
 ## Documentation
 
 ### Installation
@@ -101,7 +100,25 @@ geziyor.NewGeziyor(&geziyor.Options{
 }).Start()
 ``` 
 
+### Exporting Data
 
+You can export data automatically using exporters. Just send data to ```Geziyor.Exports``` chan.
+[Available exporters](https://godoc.org/github.com/geziyor/geziyor/exporter)
+
+```go
+geziyor.NewGeziyor(&geziyor.Options{
+    StartURLs: []string{"http://quotes.toscrape.com/"},
+    ParseFunc: func(g *geziyor.Geziyor, r *geziyor.Response) {
+        r.HTMLDoc.Find("div.quote").Each(func(_ int, s *goquery.Selection) {
+            g.Exports <- map[string]interface{}{
+                "text":   s.Find("span.text").Text(),
+                "author": s.Find("small.author").Text(),
+            }
+        })
+    },
+    Exporters: []geziyor.Exporter{&exporter.JSONExporter{}},
+}).Start()
+```
 
 ## Roadmap
 
@@ -112,6 +129,6 @@ If you're interested in helping this project, please consider these features:
 - Deploying Scrapers to Cloud
 - ~~Automatically exporting extracted data to multiple places (AWS, FTP, DB, JSON, CSV etc)~~ 
 - Downloading media (Images, Videos etc) (like [this](https://docs.scrapy.org/en/latest/topics/media-pipeline.html))
-- Realtime metrics (Prometheus etc.)
+- ~~Realtime metrics (Prometheus etc.)~~
 
   

geziyor.go

@@ -6,7 +6,7 @@ import (
 	"github.com/chromedp/cdproto/network"
 	"github.com/chromedp/chromedp"
 	"github.com/fpfeng/httpcache"
-	"github.com/geziyor/geziyor/internal"
+	"github.com/geziyor/geziyor/http"
 	"github.com/geziyor/geziyor/metrics"
 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
@@ -14,7 +14,7 @@ import (
 	"io"
 	"io/ioutil"
 	"log"
-	"net/http"
+	stdhttp "net/http"
 	"net/http/cookiejar"
 	"net/url"
 	"sync"
@@ -28,7 +28,7 @@ type Exporter interface {
 // Geziyor is our main scraper type
 type Geziyor struct {
 	Opt     *Options
-	Client  *internal.Client
+	Client  *http.Client
 	Exports chan interface{}
 
 	metrics             *metrics.Metrics
@@ -47,7 +47,7 @@ type Geziyor struct {
 // If options provided, options
 func NewGeziyor(opt *Options) *Geziyor {
 	geziyor := &Geziyor{
-		Client:  internal.NewClient(),
+		Client:  http.NewClient(),
 		Opt:     opt,
 		Exports: make(chan interface{}),
 		requestMiddlewares: []RequestMiddleware{
@@ -104,10 +104,10 @@ func (g *Geziyor) Start() {
 	log.Println("Scraping Started")
 
 	// Metrics
-	metricsServer := &http.Server{Addr: ":2112"}
+	metricsServer := &stdhttp.Server{Addr: ":2112"}
 	if g.Opt.MetricsType == metrics.Prometheus {
 		go func() {
-			http.Handle("/metrics", promhttp.Handler())
+			stdhttp.Handle("/metrics", promhttp.Handler())
 			metricsServer.ListenAndServe()
 		}()
 	}
@@ -141,7 +141,7 @@ func (g *Geziyor) Start() {
 
 // Get issues a GET to the specified URL.
 func (g *Geziyor) Get(url string, callback func(g *Geziyor, r *Response)) {
-	req, err := http.NewRequest("GET", url, nil)
+	req, err := stdhttp.NewRequest("GET", url, nil)
 	if err != nil {
 		log.Printf("Request creating error %v\n", err)
 		return
@@ -153,7 +153,7 @@ func (g *Geziyor) Get(url string, callback func(g *Geziyor, r *Response)) {
 // Opens up a new Chrome instance, makes request, waits for 1 second to render HTML DOM and closed.
 // Rendered requests only supported for GET requests.
 func (g *Geziyor) GetRendered(url string, callback func(g *Geziyor, r *Response)) {
-	req, err := http.NewRequest("GET", url, nil)
+	req, err := stdhttp.NewRequest("GET", url, nil)
 	if err != nil {
 		log.Printf("Request creating error %v\n", err)
 		return
@@ -163,7 +163,7 @@ func (g *Geziyor) GetRendered(url string, callback func(g *Geziyor, r *Response)
 
 // Head issues a HEAD to the specified URL
 func (g *Geziyor) Head(url string, callback func(g *Geziyor, r *Response)) {
-	req, err := http.NewRequest("HEAD", url, nil)
+	req, err := stdhttp.NewRequest("HEAD", url, nil)
 	if err != nil {
 		log.Printf("Request creating error %v\n", err)
 		return
@@ -265,7 +265,7 @@ func (g *Geziyor) doRequestChrome(req *Request) (*Response, error) {
 
 	if err := chromedp.Run(ctx,
 		network.Enable(),
-		network.SetExtraHTTPHeaders(network.Headers(internal.ConvertHeaderToMap(req.Header))),
+		network.SetExtraHTTPHeaders(network.Headers(http.ConvertHeaderToMap(req.Header))),
 		chromedp.ActionFunc(func(ctx context.Context) error {
 			chromedp.ListenTarget(ctx, func(ev interface{}) {
 				switch ev.(type) {
@@ -299,10 +299,10 @@ func (g *Geziyor) doRequestChrome(req *Request) (*Response, error) {
 	req.URL, _ = url.Parse(res.URL)
 
 	response := Response{
-		Response: &http.Response{
+		Response: &stdhttp.Response{
 			Request:    req.Request,
 			StatusCode: int(res.Status),
-			Header:     internal.ConvertMapToHeader(res.Headers),
+			Header:     http.ConvertMapToHeader(res.Headers),
 		},
 		Body:    []byte(body),
 		Meta:    req.Meta,

geziyor_test.go

@@ -46,7 +46,7 @@ func TestQuotes(t *testing.T) {
 }
 
 func quotesParse(g *geziyor.Geziyor, r *geziyor.Response) {
-	r.DocHTML.Find("div.quote").Each(func(i int, s *goquery.Selection) {
+	r.HTMLDoc.Find("div.quote").Each(func(i int, s *goquery.Selection) {
 		// Export Data
 		g.Exports <- map[string]interface{}{
 			"number": i,
@@ -59,7 +59,7 @@ func quotesParse(g *geziyor.Geziyor, r *geziyor.Response) {
 	})
 
 	// Next Page
-	if href, ok := r.DocHTML.Find("li.next > a").Attr("href"); ok {
+	if href, ok := r.HTMLDoc.Find("li.next > a").Attr("href"); ok {
 		g.Get(r.JoinURL(href), quotesParse)
 	}
 }
@@ -72,13 +72,14 @@ func TestAllLinks(t *testing.T) {
 		StartURLs:      []string{"http://books.toscrape.com/"},
 		ParseFunc: func(g *geziyor.Geziyor, r *geziyor.Response) {
 			g.Exports <- []string{r.Request.URL.String()}
-			r.DocHTML.Find("a").Each(func(i int, s *goquery.Selection) {
+			r.HTMLDoc.Find("a").Each(func(i int, s *goquery.Selection) {
 				if href, ok := s.Attr("href"); ok {
 					g.Get(r.JoinURL(href), g.Opt.ParseFunc)
 				}
 			})
 		},
-		Exporters: []geziyor.Exporter{&exporter.CSVExporter{}},
+		Exporters:   []geziyor.Exporter{&exporter.CSVExporter{}},
+		MetricsType: metrics.Prometheus,
 	}).Start()
 }
 
@@ -97,7 +98,7 @@ func TestStartRequestsFunc(t *testing.T) {
 			g.Get("http://quotes.toscrape.com/", g.Opt.ParseFunc)
 		},
 		ParseFunc: func(g *geziyor.Geziyor, r *geziyor.Response) {
-			r.DocHTML.Find("a").Each(func(_ int, s *goquery.Selection) {
+			r.HTMLDoc.Find("a").Each(func(_ int, s *goquery.Selection) {
 				g.Exports <- s.AttrOr("href", "")
 			})
 		},

http/http.go

@@ -1,4 +1,4 @@
-package internal
+package http
 
 import (
 	"errors"

middleware.go

@@ -3,6 +3,7 @@ package geziyor
 import (
 	"bytes"
 	"github.com/PuerkitoBio/goquery"
+	"github.com/geziyor/geziyor/http"
 	"github.com/geziyor/geziyor/internal"
 	"log"
 	"math/rand"
@@ -53,10 +54,10 @@ func duplicateRequestsMiddleware(g *Geziyor, r *Request) {
 
 // defaultHeadersMiddleware sets default request headers
 func defaultHeadersMiddleware(g *Geziyor, r *Request) {
-	r.Header = internal.SetDefaultHeader(r.Header, "Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8")
-	r.Header = internal.SetDefaultHeader(r.Header, "Accept-Charset", "utf-8")
-	r.Header = internal.SetDefaultHeader(r.Header, "Accept-Language", "en")
-	r.Header = internal.SetDefaultHeader(r.Header, "User-Agent", g.Opt.UserAgent)
+	r.Header = http.SetDefaultHeader(r.Header, "Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8")
+	r.Header = http.SetDefaultHeader(r.Header, "Accept-Charset", "utf-8")
+	r.Header = http.SetDefaultHeader(r.Header, "Accept-Language", "en")
+	r.Header = http.SetDefaultHeader(r.Header, "User-Agent", g.Opt.UserAgent)
 }
 
 // delayMiddleware delays requests
@@ -83,7 +84,7 @@ func metricsRequestMiddleware(g *Geziyor, r *Request) {
 // parseHTMLMiddleware parses response if response is HTML
 func parseHTMLMiddleware(g *Geziyor, r *Response) {
 	if !g.Opt.ParseHTMLDisabled && r.isHTML() {
-		r.DocHTML, _ = goquery.NewDocumentFromReader(bytes.NewReader(r.Body))
+		r.HTMLDoc, _ = goquery.NewDocumentFromReader(bytes.NewReader(r.Body))
 	}
 }
 

response.go

@@ -12,7 +12,7 @@ import (
 type Response struct {
 	*http.Response
 	Body    []byte
-	DocHTML *goquery.Document
+	HTMLDoc *goquery.Document
 	Meta    map[string]interface{}
 	Request *Request
 }