Implement multiple urls in single request

Author: Alessio Pollero

scrapyrt/core.py

@@ -145,10 +145,15 @@ def __init__(self, spider_name, request_kwargs, max_requests=None, start_request
         # callback will be added after instantiation of crawler object
         # because we need to know if spider has method available
         self.callback_name = request_kwargs.pop('callback', None) or 'parse'
+
         if request_kwargs.get("url"):
-            self.request = self.create_spider_request(deepcopy(request_kwargs))
+            urls = request_kwargs.pop('url').split('|')
+            self.requests = []
+            for url in urls:
+                self.requests.append(self.create_spider_request(request_kwargs, url))
         else:
-            self.request = None
+            self.requests = None
+
         self.start_requests = start_requests
         self._request_scheduled = False
 
@@ -193,15 +198,16 @@ def spider_idle(self, spider):
         which is totally wrong.
 
         """
-        if spider is self.crawler.spider and self.request and not self._request_scheduled:
+        if spider is self.crawler.spider and self.requests and not self._request_scheduled:
             callback = getattr(self.crawler.spider, self.callback_name)
             assert callable(callback), 'Invalid callback'
-            self.request = self.request.replace(callback=callback)
-            modify_request = getattr(
-                self.crawler.spider, "modify_realtime_request", None)
-            if callable(modify_request):
-                self.request = modify_request(self.request)
-            spider.crawler.engine.crawl(self.request, spider)
+            for i in range(len(self.requests)):
+                self.requests[i] = self.requests[i].replace(callback=callback)
+                modify_request = getattr(
+                    self.crawler.spider, "modify_realtime_request", None)
+                if callable(modify_request):
+                    self.requests[i] = modify_request(self.requests[i])
+                spider.crawler.engine.crawl(self.requests[i], spider)
             self._request_scheduled = True
             raise DontCloseSpider
 
@@ -262,8 +268,8 @@ def return_items(self, result):
             results["errors"] = self.errors
         return results
 
-    def create_spider_request(self, kwargs):
-        url = kwargs.pop('url')
+    def create_spider_request(self, kwargs, url):
+
         try:
             req = Request(url, **kwargs)
         except (TypeError, ValueError) as e:

tests/test_crawl_manager.py

@@ -20,7 +20,6 @@
 
 from .spiders import MetaSpider
 
-
 class TestCrawlManager(unittest.TestCase):
 
     def setUp(self):
@@ -90,7 +89,7 @@ def setUp(self):
         # test callback
         self.spider.parse_something = lambda: None
         self.crawl_manager.callback_name = 'parse_something'
-        self.request = self.crawl_manager.request
+        self.request = self.crawl_manager.requests[0]
 
     def _call_spider_idle(self):
         try:
@@ -99,13 +98,13 @@ def _call_spider_idle(self):
             pass
 
     def test_spider_opened(self):
-        self.assertIsNone(self.crawl_manager.request.callback)
+        self.assertIsNone(self.crawl_manager.requests[0].callback)
         self._call_spider_idle()
         self.crawler.engine.crawl.assert_called_once_with(
-            self.crawl_manager.request, self.spider)
-        self.assertNotEqual(self.request, self.crawl_manager.request)
+            self.crawl_manager.requests[0], self.spider)
+        self.assertNotEqual(self.request, self.crawl_manager.requests[0])
         self.assertEquals(
-            self.crawl_manager.request.callback, self.spider.parse_something)
+            self.crawl_manager.requests[0].callback, self.spider.parse_something)
 
     def test_raise_error_if_not_callable(self):
         self.spider.parse_something = None
@@ -114,8 +113,9 @@ def test_raise_error_if_not_callable(self):
         self.assertFalse(self.crawler.engine.crawl.called)
 
     def test_modify_realtime_request(self):
-        self.assertDictEqual(self.crawl_manager.request.meta, {})
-        self.assertEqual(self.crawl_manager.request.method, 'GET')
+        for request in self.crawl_manager.requests:
+            self.assertDictEqual(request.meta, {})
+            self.assertEqual(request.method, 'GET')
 
         def modify_realtime_request(request):
             request = request.replace(method='POST')
@@ -125,16 +125,16 @@ def modify_realtime_request(request):
         self.spider.modify_realtime_request = modify_realtime_request
         self._call_spider_idle()
         self.crawler.engine.crawl.assert_called_once_with(
-            self.crawl_manager.request, self.spider)
-        self.assertEqual(self.crawl_manager.request.method, 'POST')
-        self.assertEqual(self.crawl_manager.request.meta['foo'], 'bar')
+            self.crawl_manager.requests[0], self.spider)
+        self.assertEqual(self.crawl_manager.requests[0].method, 'POST')
+        self.assertEqual(self.crawl_manager.requests[0].meta['foo'], 'bar')
 
     def test_modify_realtime_request_is_not_callable(self):
         self.spider.modify_realtime_request = None
         self._call_spider_idle()
         self.crawler.engine.crawl.assert_called_once_with(
-            self.crawl_manager.request, self.spider)
-        self.assertNotEqual(self.request, self.crawl_manager.request)
+            self.crawl_manager.requests[0], self.spider)
+        self.assertNotEqual(self.request, self.crawl_manager.requests[0])
 
 
 class TestHandleScheduling(TestCrawlManager):
@@ -146,13 +146,13 @@ def setUp(self):
 
     def test_handle_scheduling(self):
         self.crawl_manager.handle_scheduling(
-            self.crawl_manager.request, self.spider)
+            self.crawl_manager.requests[0], self.spider)
         self.crawl_manager.limit_requests.assert_called_once_with(self.spider)
         self.crawl_manager.limit_runtime.assert_called_once_with(self.spider)
 
     def test_handle_scheduling_another_spider(self):
         self.crawl_manager.handle_scheduling(
-            self.crawl_manager.request, self.another_spider)
+            self.crawl_manager.requests[0], self.another_spider)
         self.assertFalse(self.crawl_manager.limit_requests.called)
         self.assertFalse(self.crawl_manager.limit_runtime.called)
 
@@ -321,24 +321,24 @@ def test_return_items_without_debug(self):
 class TestCreateSpiderRequest(TestCrawlManager):
 
     def test_valid_arguments(self):
-        req = self.crawl_manager.create_spider_request(self.kwargs)
+        req = self.crawl_manager.create_spider_request(self.kwargs, self.kwargs['url'])
         self.assertTrue(req.dont_filter)
         self.assertEqual(req.url, self.url)
 
     def test_invalid_arguments(self):
         self.kwargs['url1'] = 'http://localhost/foo'
         exception = self.assertRaises(
-            Error, self.crawl_manager.create_spider_request, self.kwargs)
+            Error, self.crawl_manager.create_spider_request, self.kwargs, self.kwargs['url1'])
         self.assertEqual(exception.status, '400')
 
     def test_invalid_url(self):
         self.kwargs['url'] = '//localhost/foo'
         exception = self.assertRaises(
-            Error, self.crawl_manager.create_spider_request, self.kwargs)
+            Error, self.crawl_manager.create_spider_request, self.kwargs, self.kwargs['url'])
         self.assertEqual(exception.status, '400')
         self.kwargs['url'] = 'localhost/foo'
         exception = self.assertRaises(
-            Error, self.crawl_manager.create_spider_request, self.kwargs)
+            Error, self.crawl_manager.create_spider_request, self.kwargs, self.kwargs['url'])
         self.assertEqual(exception.status, '400')