Implement httpbench

README.md

@@ -116,6 +116,7 @@ The spider `download.py`, dumps the response body as unicode to the files. The l
 	  bookworm         Spider to scrape locally hosted site
 	  broadworm        Broad crawl spider to scrape locally hosted sites
 	  cssbench         Micro-benchmark for extraction using css
+	  httpbench        Scrapy HTTP download handler test
 	  itemloader       Item loader benchmarker
 	  linkextractor    Micro-benchmark for LinkExtractor()
 	  urlparseprofile  Urlparse benchmarker

bench.py

@@ -168,6 +168,24 @@ def cssbench(obj):
         obj.vmprof)
 
 
+@cli.command()
+@click.pass_obj
+def httpbench(obj):
+    """Scrapy HTTP download handler test"""
+    scrapy_path = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'execute.py')
+    settings = " ".join("-s '%s'" % s for s in obj.set)
+    arg = "%s runspider httpbench.py %s" % (scrapy_path, settings)
+
+    calculator(
+        "HTTP Benchmark",
+        arg,
+        obj.n_runs,
+        obj.only_result,
+        obj.upload_result,
+        obj.vmprof
+    )
+
+
 @cli.command()
 @click.pass_obj
 def xpathbench(obj):

httpbench.py

@@ -0,0 +1,32 @@
+from datetime import datetime
+
+from scrapy import Request, Spider
+
+
+class HTTPSpider(Spider):
+    """Spider equivalent to https://http1.golang.org/gophertiles
+
+    Use the DOWNLOAD_HANDLERS setting to set the download handler to test.
+    """
+    name = 'httpbench'
+
+    def start_requests(self):
+        self.response_count = 0
+        self.start_time = datetime.utcnow()
+        version = (
+            '2' if '2' in self.settings.getwithbase('DOWNLOAD_HANDLERS')['https']
+            else '1'
+        )
+        for x in range(14):
+            for y in range(11):
+                yield Request(
+                    f'https://http{version}.golang.org/gophertiles?x={x}&y={y}&latency=0'
+                )
+
+    def parse(self, response):
+        self.response_count += 1
+
+    def close(self, reason):
+        run_time = datetime.utcnow() - self.start_time
+        with open("Benchmark.txt", 'w') as f:
+            f.write(f"{self.response_count / run_time.total_seconds()}")