Automated merge with http://hg.scrapy.org/scrapy-0.10

bin/runtests.sh

@@ -12,9 +12,6 @@ else
     exit 1
 fi
 
-# disable custom settings for running tests in a neutral environment
-export SCRAPY_SETTINGS_DISABLED=1
-
 # use vsftpd (if available) for testing ftp feed storage
 if type vsftpd >/dev/null 2>&1; then
     vsftpd_conf=$(mktemp /tmp/vsftpd-XXXX)

docs/faq.rst

@@ -171,7 +171,7 @@ higher) in your spider::
 
         name = 'myspider'
 
-        download_delay = 2
+        DOWNLOAD_DELAY = 2
 
         # [ ... rest of the spider code ... ]
 

docs/topics/commands.rst

@@ -73,10 +73,10 @@ information on which commands must be run from inside projects, and which not.
 
 Also keep in mind that some commands may have slightly different behaviours
 when running them from inside projects. For example, the fetch command will use
-spider-overridden behaviours (such as custom ``user_agent`` attribute) if the
+spider-overridden behaviours (such as custom :setting:`USER_AGENT` per-spider
-url being fetched is associated with some specific spider. This is intentional,
+setting) if the url being fetched is associated with some specific spider. This
-as the ``fetch`` command is meant to be used to check how spiders are
+is intentional, as the ``fetch`` command is meant to be used to check how
-downloading pages.
+spiders are downloading pages.
 
 .. _topics-commands-ref:
 
@@ -243,7 +243,7 @@ Downloads the given URL using the Scrapy downloader and writes the contents to
 standard output.
 
 The interesting thing about this command is that it fetches the page how the
-the spider would download it. For example, if the spider has an ``user_agent``
+the spider would download it. For example, if the spider has an ``USER_AGENT``
 attribute which overrides the User Agent, it will use that one.
 
 So this command can be used to "see" how your spider would fetch certain page.

docs/topics/downloader-middleware.rst

@@ -177,9 +177,7 @@ DefaultHeadersMiddleware
 .. class:: DefaultHeadersMiddleware
 
     This middleware sets all default requests headers specified in the
-    :setting:`DEFAULT_REQUEST_HEADERS` setting plus those found in spider
+    :setting:`DEFAULT_REQUEST_HEADERS` setting.
-    ``default_request_headers`` attribute. Spider headers has precedence over
-    global headers.
 
 DownloadTimeoutMiddleware
 -------------------------
@@ -189,10 +187,8 @@ DownloadTimeoutMiddleware
 
 .. class:: DownloadTimeoutMiddleware
 
-    This middleware sets download timeout for requests based on
+    This middleware sets the download timeout for requests specified in the 
-    `download_timeout` spider attribute. It doesn't override timeout if
+    :setting:`DOWNLOAD_TIMEOUT` setting.
-    `download_timeout` is already set in request meta. Otherwise,
-    :setting:`DOWNLOAD_TIMEOUT` setting is used as default download timeout.
 
 HttpAuthMiddleware
 ------------------

docs/topics/settings.rst

@@ -39,10 +39,9 @@ different precedence. Here is the list of them in decreasing order of
 precedence:
 
  1. Global overrides (most precedence)
- 2. Environment variables
+ 2. Project settings module
- 3. scrapy_settings
+ 3. Default settings per-command
- 4. Default settings per-command
+ 4. Default global settings (less precedence)
- 5. Default global settings (less precedence)
 
 These mechanisms are described in more detail below.
 
@@ -65,27 +64,14 @@ Example::
 
     scrapy crawl domain.com --set LOG_FILE=scrapy.log
 
-2. Environment variables
+2. Project settings module
-------------------------
+--------------------------
 
-You can populate settings using environment variables prefixed with
+The project settings module is the standard configuration file for your Scrapy
-``SCRAPY_``. For example, to change the log file location un Unix systems::
+project.  It's where most of your custom settings will be populated. For
+example:: ``myproject.settings``.
 
-    $ export SCRAPY_LOG_FILE=scrapy.log
+3. Default settings per-command
-    $ scrapy crawl example.com
-
-In Windows systems, you can change the environment variables from the Control
-Panel following `these guidelines`_.
-
-.. _these guidelines: http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/sysdm_advancd_environmnt_addchange_variable.mspx
-
-3. scrapy_settings
-------------------
-
-scrapy_settings is the standard configuration file for your Scrapy project.
-It's where most of your custom settings will be populated.
-
-4. Default settings per-command
 -------------------------------
 
 Each :doc:`Scrapy tool </topics/commands>` command can have its own default
@@ -93,11 +79,11 @@ settings, which override the global default settings. Those custom command
 settings are specified in the ``default_settings`` attribute of the command
 class.
 
-5. Default global settings
+4. Default global settings
 --------------------------
 
-The global defaults are located in scrapy.conf.default_settings and documented
+The global defaults are located in the ``scrapy.settings.default_settings``
-in the :ref:`topics-settings-ref` section.
+module and documented in the :ref:`topics-settings-ref` section.
 
 How to access settings
 ======================
@@ -412,9 +398,7 @@ setting (which is enabled by default). By default, Scrapy doesn't wait a fixed
 amount of time between requests, but uses a random interval between 0.5 and 1.5
 * :setting:`DOWNLOAD_DELAY`.
 
-Another way to change the download delay (per spider, instead of globally) is
+You can also change this setting per spider.
-by using the ``download_delay`` spider attribute, which takes more precedence
-than this setting.
 
 .. setting:: DOWNLOAD_HANDLERS
 
@@ -784,18 +768,6 @@ Default: ``+2``
 Adjust redirect request priority relative to original request.
 A negative priority adjust means more priority.
 
-.. setting:: REQUESTS_QUEUE_SIZE
-
-REQUESTS_QUEUE_SIZE
--------------------
-
-Default: ``0``
-
-Scope: ``scrapy.contrib.spidermiddleware.limit``
-
-If non zero, it will be used as an upper limit for the amount of requests that
-can be scheduled per domain.
-
 .. setting:: ROBOTSTXT_OBEY
 
 ROBOTSTXT_OBEY
@@ -882,7 +854,6 @@ Default::
     {
         'scrapy.contrib.spidermiddleware.httperror.HttpErrorMiddleware': 50,
         'scrapy.contrib.itemsampler.ItemSamplerMiddleware': 100,
-        'scrapy.contrib.spidermiddleware.requestlimit.RequestLimitMiddleware': 200,
         'scrapy.contrib.spidermiddleware.offsite.OffsiteMiddleware': 500,
         'scrapy.contrib.spidermiddleware.referer.RefererMiddleware': 700,
         'scrapy.contrib.spidermiddleware.urllength.UrlLengthMiddleware': 800,

docs/topics/spider-middleware.rst

@@ -245,25 +245,6 @@ RefererMiddleware
 
    Populates Request referer field, based on the Response which originated it.
 
-RequestLimitMiddleware
-----------------------
-
-.. module:: scrapy.contrib.spidermiddleware.requestlimit
-   :synopsis: Request limit Spider Middleware
-
-.. class:: RequestLimitMiddleware
-
-   Limits the maximum number of requests in the scheduler for each spider. When
-   a spider tries to schedule more than the allowed amount of requests, the new
-   requests (returned by the spider) will be dropped.
-
-   The :class:`RequestLimitMiddleware` can be configured through the following
-   settings (see the settings documentation for more info):
-
-      * :setting:`REQUESTS_QUEUE_SIZE` - If non zero, it will be used as an
-        upper limit for the amount of requests that can be scheduled per
-        domain. Can be set per spider using ``requests_queue_size`` attribute.
-
 UrlLengthMiddleware
 -------------------
 

examples/experimental/googledir/googledir/settings.py

@@ -4,11 +4,6 @@
 # default. All the other settings are documented here:
 #
 #     http://doc.scrapy.org/topics/settings.html
-#
-# Or you can copy and paste them from where they're defined in Scrapy:
-# 
-#     scrapy/conf/default_settings.py
-#
 
 BOT_NAME = 'googledir'
 BOT_VERSION = '1.0'

examples/experimental/imdb/imdb/settings.py

@@ -4,11 +4,6 @@
 # default. All the other settings are documented here:
 #
 #     http://doc.scrapy.org/topics/settings.html
-#
-# Or you can copy and paste them from where they're defined in Scrapy:
-# 
-#     scrapy/conf/default_settings.py
-#
 
 BOT_NAME = 'imdb'
 BOT_VERSION = '1.0'

scrapy/__init__.py

@@ -2,8 +2,8 @@
 Scrapy - a screen scraping framework written in Python
 """
 
-version_info = (0, 10, 3, 'dev')
+version_info = (0, 11, 0, 'dev')
-__version__ = "0.10.3"
+__version__ = "0.11"
 
 import sys, os, warnings
 

scrapy/cmdline.py

@@ -89,7 +89,7 @@ def _check_deprecated_scrapy_ctl(argv, inproject):
             with open(cfg_path, 'w') as f:
                 f.write("# generated automatically - feel free to edit" + os.linesep)
                 f.write("[settings]" + os.linesep)
-                f.write("default = %s" % settings.settings_module_path + os.linesep)
+                f.write("default = %s" % settings.settings_module.__name__ + os.linesep)
 
 def _run_print_help(parser, func, *a, **kw):
     try:
@@ -128,6 +128,7 @@ def execute(argv=None):
     opts, args = parser.parse_args(args=argv[1:])
     _run_print_help(parser, cmd.process_options, args, opts)
     _run_print_help(parser, _run_command, cmd, args, opts)
+    sys.exit(cmd.exitcode)
 
 def _run_command(cmd, args, opts):
     if opts.profile or opts.lsprof:

scrapy/command.py

@@ -21,6 +21,8 @@ class ScrapyCommand(object):
     # default settings to be used for this command instead of global defaults
     default_settings = {}
 
+    exitcode = 0
+
     def set_crawler(self, crawler):
         self._crawler = crawler
 

scrapy/commands/shell.py

@@ -6,6 +6,7 @@ See documentation in docs/topics/shell.rst
 
 from scrapy.command import ScrapyCommand
 from scrapy.shell import Shell
+from scrapy import log
 
 class Command(ScrapyCommand):
 
@@ -21,6 +22,11 @@ class Command(ScrapyCommand):
     def long_desc(self):
         return "Interactive console for scraping the given url"
 
+    def add_options(self, parser):
+        ScrapyCommand.add_options(self, parser)
+        parser.add_option("-c", dest="code",
+            help="evaluate the code in the shell, print the result and exit")
+
     def update_vars(self, vars):
         """You can use this function to update the Scrapy objects that will be
         available in the shell
@@ -29,6 +35,12 @@ class Command(ScrapyCommand):
 
     def run(self, args, opts):
         url = args[0] if args else None
-        shell = Shell(self.crawler, update_vars=self.update_vars, inthread=True)
+        shell = Shell(self.crawler, update_vars=self.update_vars, inthread=True, \
-        shell.start(url=url).addBoth(lambda _: self.crawler.stop())
+            code=opts.code)
+        def err(f):
+            log.err(f, "Shell error")
+            self.exitcode = 1
+        d = shell.start(url=url)
+        d.addErrback(err)
+        d.addBoth(lambda _: self.crawler.stop())
         self.crawler.start()

scrapy/conf.py

@@ -0,0 +1,37 @@
+"""
+Scrapy settings manager
+
+See documentation in docs/topics/settings.rst
+"""
+
+import os
+import cPickle as pickle
+
+from scrapy.settings import CrawlerSettings
+from scrapy.utils.conf import init_env
+
+ENVVAR = 'SCRAPY_SETTINGS_MODULE'
+
+def get_project_settings():
+    if ENVVAR not in os.environ:
+        project = os.environ.get('SCRAPY_PROJECT', 'default')
+        init_env(project)
+    settings_module_path = os.environ.get(ENVVAR, 'scrapy_settings')
+    try:
+        settings_module = __import__(settings_module_path, {}, {}, [''])
+    except ImportError:
+        settings_module = None
+    settings = CrawlerSettings(settings_module)
+
+    # XXX: remove this hack
+    pickled_settings = os.environ.get("SCRAPY_PICKLED_SETTINGS_TO_OVERRIDE")
+    settings.overrides = pickle.loads(pickled_settings) if pickled_settings else {}
+
+    # XXX: deprecate and remove this functionality
+    for k, v in os.environ.items():
+        if k.startswith('SCRAPY_'):
+            settings.overrides[k[7:]] = v
+
+    return settings
+
+settings = get_project_settings()

scrapy/conf/__init__.py

@@ -1,94 +0,0 @@
-"""
-Scrapy settings manager
-
-See documentation in docs/topics/settings.rst
-"""
-
-import os
-import cPickle as pickle
-
-from scrapy.conf import default_settings
-from scrapy.utils.conf import init_env
-
-import_ = lambda x: __import__(x, {}, {}, [''])
-
-
-class Settings(object):
-
-    def __init__(self, values=None):
-        self.values = values.copy() if values else {}
-        self.global_defaults = default_settings
-
-    def __getitem__(self, opt_name):
-        if opt_name in self.values:
-            return self.values[opt_name]
-        return getattr(self.global_defaults, opt_name, None)
-
-    def get(self, name, default=None):
-        return self[name] if self[name] is not None else default
-
-    def getbool(self, name, default=False):
-        """
-        True is: 1, '1', True
-        False is: 0, '0', False, None
-        """
-        return bool(int(self.get(name, default)))
-
-    def getint(self, name, default=0):
-        return int(self.get(name, default))
-
-    def getfloat(self, name, default=0.0):
-        return float(self.get(name, default))
-
-    def getlist(self, name, default=None):
-        value = self.get(name)
-        if value is None:
-            return default or []
-        elif hasattr(value, '__iter__'):
-            return value
-        else:
-            return str(value).split(',')
-
-
-class EnvironmentSettings(Settings):
-
-    ENVVAR = 'SCRAPY_SETTINGS_MODULE'
-
-    def __init__(self):
-        super(EnvironmentSettings, self).__init__()
-        self.defaults = {}
-        self.disabled = os.environ.get('SCRAPY_SETTINGS_DISABLED', False)
-        if self.ENVVAR not in os.environ:
-            project = os.environ.get('SCRAPY_PROJECT', 'default')
-            init_env(project)
-        settings_module_path = os.environ.get(self.ENVVAR, 'scrapy_settings')
-        self.set_settings_module(settings_module_path)
-
-        # XXX: find a better solution for this hack
-        pickled_settings = os.environ.get("SCRAPY_PICKLED_SETTINGS_TO_OVERRIDE")
-        self.overrides = pickle.loads(pickled_settings) if pickled_settings else {}
-
-    def set_settings_module(self, settings_module_path):
-        self.settings_module_path = settings_module_path
-        try:
-            self.settings_module = import_(settings_module_path)
-        except ImportError:
-            self.settings_module = None
-
-    def __getitem__(self, opt_name):
-        if not self.disabled:
-            if opt_name in self.overrides:
-                return self.overrides[opt_name]
-            if 'SCRAPY_' + opt_name in os.environ:
-                return os.environ['SCRAPY_' + opt_name]
-            if hasattr(self.settings_module, opt_name):
-                return getattr(self.settings_module, opt_name)
-            if opt_name in self.defaults:
-                return self.defaults[opt_name]
-        return super(EnvironmentSettings, self).__getitem__(opt_name)
-
-    def __str__(self):
-        return "<Settings %r>" % self.settings_module_path
-
-
-settings = EnvironmentSettings()

scrapy/contrib/downloadermiddleware/defaultheaders.py

@@ -10,18 +10,10 @@ from scrapy.utils.python import WeakKeyCache
 class DefaultHeadersMiddleware(object):
 
     def __init__(self, settings=conf.settings):
-        self.global_default_headers = settings.get('DEFAULT_REQUEST_HEADERS')
         self._headers = WeakKeyCache(self._default_headers)
 
     def _default_headers(self, spider):
-        headers = dict(self.global_default_headers)
+        return spider.settings.get('DEFAULT_REQUEST_HEADERS').items()
-        spider_headers = getattr(spider, 'default_request_headers', None) or {}
-        for k, v in spider_headers.iteritems():
-            if v:
-                headers[k] = v
-            else:
-                headers.pop(k, None)
-        return headers.items()
 
     def process_request(self, request, spider):
         for k, v in self._headers[spider]:

scrapy/contrib/downloadermiddleware/downloadtimeout.py

@@ -4,6 +4,7 @@ Download timeout middleware
 See documentation in docs/topics/downloader-middleware.rst
 """
 from scrapy.utils.python import WeakKeyCache
+from scrapy.utils import deprecate
 
 
 class DownloadTimeoutMiddleware(object):
@@ -12,7 +13,10 @@ class DownloadTimeoutMiddleware(object):
         self._cache = WeakKeyCache(self._download_timeout)
 
     def _download_timeout(self, spider):
-        return getattr(spider, "download_timeout", None)
+        if hasattr(spider, 'download_timeout'):
+            deprecate.attribute(spider, 'download_timeout', 'DOWNLOAD_TIMEOUT')
+            return spider.download_timeout
+        return spider.settings.getint('DOWNLOAD_TIMEOUT')
 
     def process_request(self, request, spider):
         timeout = self._cache[spider]

scrapy/contrib/downloadermiddleware/retry.py

@@ -11,9 +11,6 @@ once the spider has finished crawling all regular (non failed) pages. Once
 there is no more failed pages to retry this middleware sends a signal
 (retry_complete), so other extensions could connect to that signal.
 
-Default values are located in scrapy.conf.default_settings, like any other
-setting
-
 About HTTP errors to consider:
 
 - You may want to remove 400 from RETRY_HTTP_CODES, if you stick to the HTTP

scrapy/contrib/downloadermiddleware/robotstxt.py

@@ -54,8 +54,7 @@ class RobotsTxtMiddleware(object):
 
     def spider_opened(self, spider):
         self._spider_netlocs[spider] = set()
-        self._useragents[spider] = getattr(spider, 'user_agent', None) \
+        self._useragents[spider] = spider.settings['USER_AGENT']
-            or settings['USER_AGENT']
 
     def spider_closed(self, spider):
         for netloc in self._spider_netlocs[spider]:

scrapy/contrib/downloadermiddleware/useragent.py

@@ -1,18 +1,20 @@
 """Set User-Agent header per spider or use a default value from settings"""
 
-from scrapy.conf import settings
 from scrapy.utils.python import WeakKeyCache
+from scrapy.utils import deprecate
 
 
 class UserAgentMiddleware(object):
     """This middleware allows spiders to override the user_agent"""
 
-    def __init__(self, settings=settings):
+    def __init__(self):
         self.cache = WeakKeyCache(self._user_agent)
-        self.default_useragent = settings.get('USER_AGENT')
 
     def _user_agent(self, spider):
-        return getattr(spider, 'user_agent', None) or self.default_useragent
+        if hasattr(spider, 'user_agent'):
+            deprecate.attribute(spider, 'user_agent', 'USER_AGENT')
+            return spider.user_agent
+        return spider.settings['USER_AGENT']
 
     def process_request(self, request, spider):
         ua = self.cache[spider]

scrapy/contrib/spidermiddleware/requestlimit.py

@@ -1,65 +0,0 @@
-"""
-Request Limit Spider middleware
-
-See documentation in docs/topics/spider-middleware.rst
-"""
-from itertools import imap
-from scrapy.xlib.pydispatch import dispatcher
-
-from scrapy import signals
-from scrapy.project import crawler
-from scrapy.exceptions import NotConfigured
-from scrapy.conf import settings
-from scrapy.http import Request
-from scrapy import log
-
-class RequestLimitMiddleware(object):
-
-    def __init__(self):
-        self.max_queue_size = settings.getint("REQUESTS_QUEUE_SIZE")
-        if not self.max_queue_size:
-            raise NotConfigured
-
-        self.max_pending = {}
-        self.dropped_count = {}
-
-        dispatcher.connect(self.spider_opened, signal=signals.spider_opened)
-        dispatcher.connect(self.spider_closed, signal=signals.spider_closed)
-
-    def spider_opened(self, spider):
-        self.max_pending[spider] = getattr(spider, 'requests_queue_size', self.max_queue_size)
-        self.dropped_count[spider] = 0
-
-    def spider_closed(self, spider):
-        dropped_count = self.dropped_count[spider]
-        if dropped_count:
-            max_pending = self.max_pending[spider]
-            log.msg('Dropped %d request(s) because the scheduler queue size limit (%d requests) was exceeded' % \
-                    (dropped_count, max_pending), level=log.DEBUG, spider=spider)
-        del self.dropped_count[spider]
-        del self.max_pending[spider]
-
-    def process_spider_output(self, response, result, spider):
-        max_pending = self.max_pending.get(spider, 0)
-        if max_pending:
-            return imap(lambda v: self._limit_requests(v, spider, max_pending), result)
-        else:
-            return result
-
-    def _limit_requests(self, request_or_other, spider, max_pending):
-        if isinstance(request_or_other, Request):
-            free_slots = max_pending - self._pending_count(spider)
-            if free_slots > 0:
-                # Scheduler isn't saturated and it is fine to schedule more requests.
-                return request_or_other
-            else:
-                # Skip the request and give engine time to handle other tasks.
-                self.dropped_count[spider] += 1
-                return None
-        else:
-            # Return others (non-requests) as is.
-            return request_or_other
-
-    def _pending_count(self, spider):
-        pending = crawler.engine.scheduler.pending_requests.get(spider, [])
-        return len(pending)

scrapy/core/downloader/__init__.py

@@ -12,6 +12,7 @@ from scrapy.exceptions import IgnoreRequest
 from scrapy.conf import settings
 from scrapy.utils.defer import mustbe_deferred
 from scrapy.utils.signal import send_catch_log
+from scrapy.utils import deprecate
 from scrapy import signals
 from scrapy import log
 from .middleware import DownloaderMiddlewareManager
@@ -21,18 +22,21 @@ from .handlers import DownloadHandlers
 class SpiderInfo(object):
     """Simple class to keep information and state for each open spider"""
 
-    def __init__(self, download_delay=None, max_concurrent_requests=None):
+    def __init__(self, spider):
-        if download_delay is None:
+        if hasattr(spider, 'download_delay'):
-            self._download_delay = settings.getfloat('DOWNLOAD_DELAY')
+            deprecate.attribute(spider, 'download_delay', 'DOWNLOAD_DELAY')
+            self._download_delay = spider.download_delay
         else:
-            self._download_delay = float(download_delay)
+            self._download_delay = spider.settings.getfloat('DOWNLOAD_DELAY')
         if self._download_delay:
             self.max_concurrent_requests = 1
-        elif max_concurrent_requests is None:
-            self.max_concurrent_requests = settings.getint('CONCURRENT_REQUESTS_PER_SPIDER')
         else:
-            self.max_concurrent_requests =  max_concurrent_requests
+            if hasattr(spider, 'max_concurrent_requests'):
-        if self._download_delay and settings.getbool('RANDOMIZE_DOWNLOAD_DELAY'):
+                deprecate.attribute(spider, 'max_concurrent_requests', 'CONCURRENT_REQUESTS_PER_SPIDER')
+                self.max_concurrent_requests = spider.max_concurrent_requests
+            else:
+                self.max_concurrent_requests = spider.settings.getint('CONCURRENT_REQUESTS_PER_SPIDER')
+        if self._download_delay and spider.settings.getbool('RANDOMIZE_DOWNLOAD_DELAY'):
             # same policy as wget --random-wait
             self.random_delay_interval = (0.5*self._download_delay, \
                 1.5*self._download_delay)
@@ -178,10 +182,7 @@ class Downloader(object):
     def open_spider(self, spider):
         """Allocate resources to begin processing a spider"""
         assert spider not in self.sites, "Spider already opened: %s" % spider
-        self.sites[spider] = SpiderInfo(
+        self.sites[spider] = SpiderInfo(spider)
-            download_delay=getattr(spider, 'download_delay', None),
-            max_concurrent_requests=getattr(spider, 'max_concurrent_requests', None)
-        )
 
     def close_spider(self, spider):
         """Free any resources associated with the given spider"""

scrapy/core/downloader/webclient.py

@@ -8,10 +8,6 @@ from twisted.internet import defer
 from scrapy.http import Headers
 from scrapy.utils.httpobj import urlparse_cached
 from scrapy.core.downloader.responsetypes import responsetypes
-from scrapy.conf import settings
-
-
-DOWNLOAD_TIMEOUT = settings.getint('DOWNLOAD_TIMEOUT')
 
 
 def _parsed_url_args(parsed):
@@ -89,7 +85,7 @@ class ScrapyHTTPClientFactory(HTTPClientFactory):
     followRedirect = False
     afterFoundGet = False
 
-    def __init__(self, request, timeout=DOWNLOAD_TIMEOUT):
+    def __init__(self, request, timeout=180):
         self.url = urldefrag(request.url)[0]
         self.method = request.method
         self.body = request.body or None

scrapy/crawler.py

@@ -54,6 +54,7 @@ class Crawler(object):
     @defer.inlineCallbacks
     def _start_spider(self, spider, requests):
         """Don't call this method. Use self.queue to start new spiders"""
+        spider.set_crawler(self)
         yield defer.maybeDeferred(self.engine.open_spider, spider)
         for request in requests:
             self.engine.crawl(request, spider)

scrapy/settings/__init__.py

@@ -0,0 +1,81 @@
+from . import default_settings
+
+
+class Settings(object):
+
+    def __init__(self, values=None):
+        self.values = values.copy() if values else {}
+        self.global_defaults = default_settings
+
+    def __getitem__(self, opt_name):
+        if opt_name in self.values:
+            return self.values[opt_name]
+        return getattr(self.global_defaults, opt_name, None)
+
+    def get(self, name, default=None):
+        return self[name] if self[name] is not None else default
+
+    def getbool(self, name, default=False):
+        """
+        True is: 1, '1', True
+        False is: 0, '0', False, None
+        """
+        return bool(int(self.get(name, default)))
+
+    def getint(self, name, default=0):
+        return int(self.get(name, default))
+
+    def getfloat(self, name, default=0.0):
+        return float(self.get(name, default))
+
+    def getlist(self, name, default=None):
+        value = self.get(name)
+        if value is None:
+            return default or []
+        elif hasattr(value, '__iter__'):
+            return value
+        else:
+            return str(value).split(',')
+
+
+class CrawlerSettings(Settings):
+
+    def __init__(self, settings_module=None, **kw):
+        super(CrawlerSettings, self).__init__(**kw)
+        self.settings_module = settings_module
+        self.overrides = {}
+        self.defaults = {}
+
+    def __getitem__(self, opt_name):
+        if opt_name in self.overrides:
+            return self.overrides[opt_name]
+        if self.settings_module and hasattr(self.settings_module, opt_name):
+            return getattr(self.settings_module, opt_name)
+        if opt_name in self.defaults:
+            return self.defaults[opt_name]
+        return super(CrawlerSettings, self).__getitem__(opt_name)
+
+    def __str__(self):
+        return "<CrawlerSettings module=%r>" % self.settings_module
+
+
+class SpiderSettings(Settings):
+
+    def __init__(self, spider, crawler_settings, **kw):
+        super(SpiderSettings, self).__init__(**kw)
+        self.spider = spider
+        self.cset = crawler_settings
+
+    def __getitem__(self, opt_name):
+        if opt_name in self.cset.overrides:
+            return self.cset.overrides[opt_name]
+        if hasattr(self.spider, opt_name):
+            return getattr(self.spider, opt_name)
+        if self.cset.settings_module and hasattr(self.cset.settings_module, opt_name):
+            return getattr(self.cset.settings_module, opt_name)
+        if opt_name in self.cset.defaults:
+            return self.cset.defaults[opt_name]
+        return super(SpiderSettings, self).__getitem__(opt_name)
+
+    def __str__(self):
+        return "<SpiderSettings spider=%r>" % self.spider.name

scrapy/settings/default_settings.py

@@ -194,8 +194,6 @@ REDIRECT_MAX_METAREFRESH_DELAY = 100
 REDIRECT_MAX_TIMES = 20 # uses Firefox default setting
 REDIRECT_PRIORITY_ADJUST = +2
 
-REQUESTS_QUEUE_SIZE = 0
-
 # contrib.middleware.retry.RetryMiddleware default settings
 RETRY_TIMES = 2 # initial response + 2 retries = 3 requests
 RETRY_HTTP_CODES = ['500', '503', '504', '400', '408']
@@ -220,7 +218,6 @@ SPIDER_MIDDLEWARES = {}
 SPIDER_MIDDLEWARES_BASE = {
     # Engine side
     'scrapy.contrib.spidermiddleware.httperror.HttpErrorMiddleware': 50,
-    'scrapy.contrib.spidermiddleware.requestlimit.RequestLimitMiddleware': 200,
     'scrapy.contrib.spidermiddleware.offsite.OffsiteMiddleware': 500,
     'scrapy.contrib.spidermiddleware.referer.RefererMiddleware': 700,
     'scrapy.contrib.spidermiddleware.urllength.UrlLengthMiddleware': 800,

scrapy/shell.py

@@ -7,9 +7,7 @@ See documentation in docs/topics/shell.rst
 import signal
 
 from twisted.internet import reactor, threads
-from twisted.python.failure import Failure
 
-from scrapy import log
 from scrapy.item import BaseItem
 from scrapy.spider import BaseSpider
 from scrapy.selector import XPathSelector, XmlXPathSelector, HtmlXPathSelector
@@ -18,7 +16,7 @@ from scrapy.utils.misc import load_object
 from scrapy.utils.response import open_in_browser
 from scrapy.utils.url import any_to_uri
 from scrapy.utils.console import start_python_console
-from scrapy.conf import settings, Settings
+from scrapy.settings import Settings
 from scrapy.http import Request, Response, TextResponse
 
 class Shell(object):
@@ -26,12 +24,13 @@ class Shell(object):
     relevant_classes = (BaseSpider, Request, Response, BaseItem, \
         XPathSelector, Settings)
 
-    def __init__(self, crawler, update_vars=None, inthread=False):
+    def __init__(self, crawler, update_vars=None, inthread=False, code=None):
         self.crawler = crawler
         self.vars = {}
         self.update_vars = update_vars or (lambda x: None)
-        self.item_class = load_object(settings['DEFAULT_ITEM_CLASS'])
+        self.item_class = load_object(crawler.settings['DEFAULT_ITEM_CLASS'])
         self.inthread = inthread
+        self.code = code
 
     def start(self, *a, **kw):
         # disable accidental Ctrl-C key press from shutting down the engine
@@ -49,14 +48,20 @@ class Shell(object):
         elif response:
             request = response.request
             self.populate_vars(request.url, response, request, spider)
-        start_python_console(self.vars)
+        if self.code:
+            print eval(self.code, globals(), self.vars)
+        else:
+            start_python_console(self.vars)
 
     def _schedule(self, request, spider):
         if spider is None:
             spider = create_spider_for_request(self.crawler.spiders, request, \
                 BaseSpider('default'), log_multiple=True)
+        spider.set_crawler(self.crawler)
         self.crawler.engine.open_spider(spider)
-        return self.crawler.engine.schedule(request, spider)
+        d = self.crawler.engine.schedule(request, spider)
+        d.addCallback(lambda x: (x, spider))
+        return d
 
     def fetch(self, request_or_url, spider=None):
         if isinstance(request_or_url, Request):
@@ -66,17 +71,14 @@ class Shell(object):
             url = any_to_uri(request_or_url)
             request = Request(url, dont_filter=True)
         response = None
-        try:
+        response, spider = threads.blockingCallFromThread(reactor, \
-            response = threads.blockingCallFromThread(reactor, \
+            self._schedule, request, spider)
-                self._schedule, request, spider)
-        except:
-            log.err(Failure(), "Error fetching response", spider=spider)
         self.populate_vars(url, response, request, spider)
 
     def populate_vars(self, url=None, response=None, request=None, spider=None):
         item = self.item_class()
         self.vars['item'] = item
-        self.vars['settings'] = settings
+        self.vars['settings'] = self.crawler.settings
         if url:
             if isinstance(response, TextResponse):
                 self.vars['xxs'] = XmlXPathSelector(response)
@@ -89,7 +91,8 @@ class Shell(object):
         self.vars['view'] = open_in_browser
         self.vars['shelp'] = self.print_help
         self.update_vars(self.vars)
-        self.print_help()
+        if not self.code:
+            self.print_help()
 
     def print_help(self):
         self.p("Available Scrapy objects:")

scrapy/spider.py

@@ -5,6 +5,7 @@ See documentation in docs/topics/spiders.rst
 """
 
 from scrapy import log
+from scrapy.settings import SpiderSettings
 from scrapy.http import Request
 from scrapy.utils.misc import arg_to_iter
 from scrapy.utils.trackref import object_ref
@@ -33,6 +34,21 @@ class BaseSpider(object_ref):
         """
         log.msg(message, spider=self, level=level)
 
+    def set_crawler(self, crawler):
+        assert not hasattr(self, '_crawler'), "Spider already bounded to %s" % crawler
+        self._crawler = crawler
+
+    @property
+    def crawler(self):
+        assert hasattr(self, '_crawler'), "Spider not bounded to any crawler"
+        return self._crawler
+
+    @property
+    def settings(self):
+        if not hasattr(self, '_settings'):
+            self._settings = SpiderSettings(self, self.crawler.settings)
+        return self._settings
+
     def start_requests(self):
         reqs = []
         for url in self.start_urls:

scrapy/templates/project/module/settings.py.tmpl

@@ -5,10 +5,6 @@
 #
 #     http://doc.scrapy.org/topics/settings.html
 #
-# Or you can copy and paste them from where they're defined in Scrapy:
-# 
-#     scrapy/conf/default_settings.py
-#
 
 BOT_NAME = '$project_name'
 BOT_VERSION = '1.0'

scrapy/tests/test_cmdline/__init__.py

@@ -10,7 +10,6 @@ class CmdlineTest(unittest.TestCase):
     def setUp(self):
         self.env = os.environ.copy()
         self.env['PYTHONPATH'] = os.path.dirname(scrapy.__path__[0])
-        self.env.pop('SCRAPY_SETTINGS_DISABLED', None)
         self.env['SCRAPY_SETTINGS_MODULE'] = 'scrapy.tests.test_cmdline.settings'
 
     def _execute(self, *new_args, **kwargs):

scrapy/tests/test_commands.py

@@ -61,7 +61,6 @@ class CommandTest(ProjectTest):
         super(CommandTest, self).setUp()
         self.call('startproject', self.project_name)
         self.cwd = join(self.temp_path, self.project_name)
-        self.env.pop('SCRAPY_SETTINGS_DISABLED', None)
         self.env['SCRAPY_SETTINGS_MODULE'] = '%s.settings' % self.project_name
 
 

scrapy/tests/test_conf.py

@@ -1,51 +0,0 @@
-import unittest
-
-from scrapy.conf import Settings
-
-class SettingsTest(unittest.TestCase):
-
-    def test_get(self):
-        settings = Settings({
-            'TEST_ENABLED1': '1',
-            'TEST_ENABLED2': True,
-            'TEST_ENABLED3': 1,
-            'TEST_DISABLED1': '0',
-            'TEST_DISABLED2': False,
-            'TEST_DISABLED3': 0,
-            'TEST_INT1': 123,
-            'TEST_INT2': '123',
-            'TEST_FLOAT1': 123.45,
-            'TEST_FLOAT2': '123.45',
-            'TEST_LIST1': ['one', 'two'],
-            'TEST_LIST2': 'one,two',
-            'TEST_STR': 'value',
-        })
-        assert settings.getbool('TEST_ENABLED1') is True
-        assert settings.getbool('TEST_ENABLED2') is True
-        assert settings.getbool('TEST_ENABLED3') is True
-        assert settings.getbool('TEST_ENABLEDx') is False
-        assert settings.getbool('TEST_ENABLEDx', True) is True
-        assert settings.getbool('TEST_DISABLED1') is False
-        assert settings.getbool('TEST_DISABLED2') is False
-        assert settings.getbool('TEST_DISABLED3') is False
-        self.assertEqual(settings.getint('TEST_INT1'), 123)
-        self.assertEqual(settings.getint('TEST_INT2'), 123)
-        self.assertEqual(settings.getint('TEST_INTx'), 0)
-        self.assertEqual(settings.getint('TEST_INTx', 45), 45)
-        self.assertEqual(settings.getfloat('TEST_FLOAT1'), 123.45)
-        self.assertEqual(settings.getfloat('TEST_FLOAT2'), 123.45)
-        self.assertEqual(settings.getfloat('TEST_FLOATx'), 0.0)
-        self.assertEqual(settings.getfloat('TEST_FLOATx', 55.0), 55.0)
-        self.assertEqual(settings.getlist('TEST_LIST1'), ['one', 'two'])
-        self.assertEqual(settings.getlist('TEST_LIST2'), ['one', 'two'])
-        self.assertEqual(settings.getlist('TEST_LISTx'), [])
-        self.assertEqual(settings.getlist('TEST_LISTx', ['default']), ['default'])
-        self.assertEqual(settings['TEST_STR'], 'value')
-        self.assertEqual(settings.get('TEST_STR'), 'value')
-        self.assertEqual(settings['TEST_STRx'], None)
-        self.assertEqual(settings.get('TEST_STRx'), None)
-        self.assertEqual(settings.get('TEST_STRx', 'default'), 'default')
-
-if __name__ == "__main__":
-    unittest.main()
-

scrapy/tests/test_downloadermiddleware_defaultheaders.py

@@ -4,39 +4,44 @@ from scrapy.conf import settings
 from scrapy.contrib.downloadermiddleware.defaultheaders import DefaultHeadersMiddleware
 from scrapy.http import Request
 from scrapy.spider import BaseSpider
+from scrapy.utils.test import get_crawler
 
 
 class TestDefaultHeadersMiddleware(TestCase):
 
-    def setUp(self):
+    def get_defaults_spider_mw(self):
-        self.spider = BaseSpider('foo')
+        crawler = get_crawler()
-        self.mw = DefaultHeadersMiddleware()
+        spider = BaseSpider('foo')
-        self.default_request_headers = dict([(k, [v]) for k, v in \
+        spider.set_crawler(crawler)
-            settings.get('DEFAULT_REQUEST_HEADERS').iteritems()])
+        defaults = dict([(k, [v]) for k, v in \
+            crawler.settings.get('DEFAULT_REQUEST_HEADERS').iteritems()])
+        return defaults, spider, DefaultHeadersMiddleware()
 
     def test_process_request(self):
+        defaults, spider, mw = self.get_defaults_spider_mw()
         req = Request('http://www.scrapytest.org')
-        self.mw.process_request(req, self.spider)
+        mw.process_request(req, spider)
-        self.assertEquals(req.headers, self.default_request_headers)
+        self.assertEquals(req.headers, defaults)
 
     def test_spider_default_request_headers(self):
+        defaults, spider, mw = self.get_defaults_spider_mw()
         spider_headers = {'Unexistant-Header': ['value']}
         # override one of the global default headers by spider
-        if self.default_request_headers:
+        if defaults:
-            k = set(self.default_request_headers).pop()
+            k = set(defaults).pop()
             spider_headers[k] = ['__newvalue__']
-        self.spider.default_request_headers = spider_headers
+        spider.DEFAULT_REQUEST_HEADERS = spider_headers
 
         req = Request('http://www.scrapytest.org')
-        self.mw.process_request(req, self.spider)
+        mw.process_request(req, spider)
-        self.assertEquals(req.headers, dict(self.default_request_headers, **spider_headers))
+        self.assertEquals(req.headers, dict(spider_headers))
 
     def test_update_headers(self):
+        defaults, spider, mw = self.get_defaults_spider_mw()
         headers = {'Accept-Language': ['es'], 'Test-Header': ['test']}
         req = Request('http://www.scrapytest.org', headers=headers)
         self.assertEquals(req.headers, headers)
 
-        self.mw.process_request(req, self.spider)
+        mw.process_request(req, spider)
-        self.default_request_headers.update(headers)
+        defaults.update(headers)
-        self.assertEquals(req.headers, self.default_request_headers)
+        self.assertEquals(req.headers, defaults)
-

scrapy/tests/test_downloadermiddleware_downloadtimeout.py

@@ -3,31 +3,32 @@ import unittest
 from scrapy.contrib.downloadermiddleware.downloadtimeout import DownloadTimeoutMiddleware
 from scrapy.spider import BaseSpider
 from scrapy.http import Request
+from scrapy.utils.test import get_crawler
 
 
 class DownloadTimeoutMiddlewareTest(unittest.TestCase):
 
-    def setUp(self):
+    def get_request_spider_mw(self):
-        self.mw = DownloadTimeoutMiddleware()
+        crawler = get_crawler()
-        self.spider = BaseSpider('foo')
+        spider = BaseSpider('foo')
-        self.req = Request('http://scrapytest.org/')
+        spider.set_crawler(crawler)
+        request = Request('http://scrapytest.org/')
+        return request, spider, DownloadTimeoutMiddleware()
 
-    def tearDown(self):
+    def test_default_download_timeout(self):
-        del self.mw
+        req, spider, mw = self.get_request_spider_mw()
-        del self.spider
+        assert mw.process_request(req, spider) is None
-        del self.req
+        self.assertEquals(req.meta.get('download_timeout'), 180)
-
-    def test_spider_has_no_download_timeout(self):
-        assert self.mw.process_request(self.req, self.spider) is None
-        assert 'download_timeout' not in self.req.meta
 
     def test_spider_has_download_timeout(self):
-        self.spider.download_timeout = 2
+        req, spider, mw = self.get_request_spider_mw()
-        assert self.mw.process_request(self.req, self.spider) is None
+        spider.DOWNLOAD_TIMEOUT = 2
-        self.assertEquals(self.req.meta.get('download_timeout'), 2)
+        assert mw.process_request(req, spider) is None
+        self.assertEquals(req.meta.get('download_timeout'), 2)
 
     def test_request_has_download_timeout(self):
-        self.spider.download_timeout = 2
+        req, spider, mw = self.get_request_spider_mw()
-        self.req.meta['download_timeout'] = 1
+        spider.DOWNLOAD_TIMEOUT = 2
-        assert self.mw.process_request(self.req, self.spider) is None
+        req.meta['download_timeout'] = 1
-        self.assertEquals(self.req.meta.get('download_timeout'), 1)
+        assert mw.process_request(req, spider) is None
+        self.assertEquals(req.meta.get('download_timeout'), 1)

scrapy/tests/test_downloadermiddleware_httpcache.py

@@ -3,7 +3,7 @@ import unittest, tempfile, shutil, time
 from scrapy.http import Response, HtmlResponse, Request
 from scrapy.spider import BaseSpider
 from scrapy.contrib.downloadermiddleware.httpcache import FilesystemCacheStorage, HttpCacheMiddleware
-from scrapy.conf import Settings
+from scrapy.settings import Settings
 from scrapy.exceptions import IgnoreRequest
 
 

scrapy/tests/test_downloadermiddleware_useragent.py

@@ -3,47 +3,49 @@ from unittest import TestCase
 from scrapy.spider import BaseSpider
 from scrapy.http import Request
 from scrapy.contrib.downloadermiddleware.useragent import UserAgentMiddleware
+from scrapy.utils.test import get_crawler
 
 
 class UserAgentMiddlewareTest(TestCase):
 
-    def setUp(self):
+    def get_spider_and_mw(self, default_useragent):
-        self.spider = BaseSpider('foo')
+        crawler = get_crawler({'USER_AGENT': default_useragent})
-        self.mw = UserAgentMiddleware()
+        spider = BaseSpider('foo')
-
+        spider.set_crawler(crawler)
-    def tearDown(self):
+        return spider, UserAgentMiddleware()
-        del self.mw
 
     def test_default_agent(self):
-        self.mw.default_useragent = 'default_useragent'
+        spider, mw = self.get_spider_and_mw('default_useragent')
         req = Request('http://scrapytest.org/')
-        assert self.mw.process_request(req, self.spider) is None
+        assert mw.process_request(req, spider) is None
         self.assertEquals(req.headers['User-Agent'], 'default_useragent')
 
-        # None or not present user_agent attribute is the same
+    def test_remove_agent(self):
-        self.spider.user_agent = None
+        # settings UESR_AGENT to None should remove the user agent
+        spider, mw = self.get_spider_and_mw('default_useragent')
+        spider.USER_AGENT = None
         req = Request('http://scrapytest.org/')
-        assert self.mw.process_request(req, self.spider) is None
+        assert mw.process_request(req, spider) is None
-        self.assertEquals(req.headers['User-Agent'], 'default_useragent')
+        assert req.headers.get('User-Agent') is None
 
     def test_spider_agent(self):
-        self.mw.default_useragent = 'default_useragent'
+        spider, mw = self.get_spider_and_mw('default_useragent')
-        self.spider.user_agent = 'spider_useragent'
+        spider.USER_AGENT = 'spider_useragent'
         req = Request('http://scrapytest.org/')
-        assert self.mw.process_request(req, self.spider) is None
+        assert mw.process_request(req, spider) is None
         self.assertEquals(req.headers['User-Agent'], 'spider_useragent')
 
     def test_header_agent(self):
-        self.mw.default_useragent = 'default_useragent'
+        spider, mw = self.get_spider_and_mw('default_useragent')
-        self.spider.user_agent = 'spider_useragent'
+        spider.USER_AGENT = 'spider_useragent'
         req = Request('http://scrapytest.org/', headers={'User-Agent': 'header_useragent'})
-        assert self.mw.process_request(req, self.spider) is None
+        assert mw.process_request(req, spider) is None
         self.assertEquals(req.headers['User-Agent'], 'header_useragent')
 
     def test_no_agent(self):
-        self.mw.default_useragent = None
+        spider, mw = self.get_spider_and_mw(None)
-        self.spider.user_agent = None
+        spider.USER_AGENT = None
         req = Request('http://scrapytest.org/')
-        assert self.mw.process_request(req, self.spider) is None
+        assert mw.process_request(req, spider) is None
         assert 'User-Agent' not in req.headers
 

scrapy/tests/test_engine.py

@@ -17,8 +17,7 @@ from twisted.web import server, static, util
 from twisted.trial import unittest
 
 from scrapy import signals
-from scrapy.conf import Settings
+from scrapy.utils.test import get_crawler
-from scrapy.crawler import Crawler
 from scrapy.xlib.pydispatch import dispatcher
 from scrapy.tests import tests_datadir
 from scrapy.spider import BaseSpider
@@ -95,8 +94,7 @@ class CrawlerRun(object):
         dispatcher.connect(self.request_received, signals.request_received)
         dispatcher.connect(self.response_downloaded, signals.response_downloaded)
 
-        settings = Settings()
+        self.crawler = get_crawler()
-        self.crawler = Crawler(settings)
         self.crawler.install()
         self.crawler.configure()
         self.crawler.queue.append_spider(self.spider)

scrapy/tests/test_middleware.py

@@ -1,6 +1,6 @@
 from twisted.trial import unittest
 
-from scrapy.conf import Settings
+from scrapy.settings import Settings
 from scrapy.exceptions import NotConfigured
 from scrapy.middleware import MiddlewareManager
 

scrapy/tests/test_pipeline_media.py

@@ -2,7 +2,7 @@ from twisted.trial import unittest
 from twisted.python import failure
 from twisted.internet import defer, reactor
 
-from scrapy.conf import Settings
+from scrapy.settings import Settings
 from scrapy.crawler import Crawler
 from scrapy.http import Request, Response
 from scrapy.spider import BaseSpider

scrapy/tests/test_settings.py

@@ -0,0 +1,103 @@
+import unittest
+
+from scrapy.settings import Settings, SpiderSettings
+from scrapy.utils.test import get_crawler
+from scrapy.spider import BaseSpider
+
+class SettingsTest(unittest.TestCase):
+
+    def test_get(self):
+        settings = Settings({
+            'TEST_ENABLED1': '1',
+            'TEST_ENABLED2': True,
+            'TEST_ENABLED3': 1,
+            'TEST_DISABLED1': '0',
+            'TEST_DISABLED2': False,
+            'TEST_DISABLED3': 0,
+            'TEST_INT1': 123,
+            'TEST_INT2': '123',
+            'TEST_FLOAT1': 123.45,
+            'TEST_FLOAT2': '123.45',
+            'TEST_LIST1': ['one', 'two'],
+            'TEST_LIST2': 'one,two',
+            'TEST_STR': 'value',
+        })
+        assert settings.getbool('TEST_ENABLED1') is True
+        assert settings.getbool('TEST_ENABLED2') is True
+        assert settings.getbool('TEST_ENABLED3') is True
+        assert settings.getbool('TEST_ENABLEDx') is False
+        assert settings.getbool('TEST_ENABLEDx', True) is True
+        assert settings.getbool('TEST_DISABLED1') is False
+        assert settings.getbool('TEST_DISABLED2') is False
+        assert settings.getbool('TEST_DISABLED3') is False
+        self.assertEqual(settings.getint('TEST_INT1'), 123)
+        self.assertEqual(settings.getint('TEST_INT2'), 123)
+        self.assertEqual(settings.getint('TEST_INTx'), 0)
+        self.assertEqual(settings.getint('TEST_INTx', 45), 45)
+        self.assertEqual(settings.getfloat('TEST_FLOAT1'), 123.45)
+        self.assertEqual(settings.getfloat('TEST_FLOAT2'), 123.45)
+        self.assertEqual(settings.getfloat('TEST_FLOATx'), 0.0)
+        self.assertEqual(settings.getfloat('TEST_FLOATx', 55.0), 55.0)
+        self.assertEqual(settings.getlist('TEST_LIST1'), ['one', 'two'])
+        self.assertEqual(settings.getlist('TEST_LIST2'), ['one', 'two'])
+        self.assertEqual(settings.getlist('TEST_LISTx'), [])
+        self.assertEqual(settings.getlist('TEST_LISTx', ['default']), ['default'])
+        self.assertEqual(settings['TEST_STR'], 'value')
+        self.assertEqual(settings.get('TEST_STR'), 'value')
+        self.assertEqual(settings['TEST_STRx'], None)
+        self.assertEqual(settings.get('TEST_STRx'), None)
+        self.assertEqual(settings.get('TEST_STRx', 'default'), 'default')
+
+class CrawlerSettingsTest(unittest.TestCase):
+
+    def test_global_defaults(self):
+        crawler = get_crawler()
+        self.assertEqual(crawler.settings.getint('DOWNLOAD_TIMEOUT'), 180)
+
+    def test_defaults(self):
+        crawler = get_crawler()
+        crawler.settings.defaults['DOWNLOAD_TIMEOUT'] = '99'
+        self.assertEqual(crawler.settings.getint('DOWNLOAD_TIMEOUT'), 99)
+
+    def test_settings_module(self):
+        crawler = get_crawler({'DOWNLOAD_TIMEOUT': '3'})
+        self.assertEqual(crawler.settings.getint('DOWNLOAD_TIMEOUT'), 3)
+
+    def test_overrides(self):
+        crawler = get_crawler({'DOWNLOAD_TIMEOUT': '3'})
+        crawler.settings.overrides['DOWNLOAD_TIMEOUT'] = '15'
+        self.assertEqual(crawler.settings.getint('DOWNLOAD_TIMEOUT'), 15)
+
+class SpiderSettingsTest(unittest.TestCase):
+
+    def test_global_defaults(self):
+        crawler = get_crawler()
+        settings = SpiderSettings(BaseSpider('name'), crawler.settings)
+        self.assertEqual(settings.getint('DOWNLOAD_TIMEOUT'), 180)
+
+    def test_defaults(self):
+        crawler = get_crawler()
+        crawler.settings.defaults['DOWNLOAD_TIMEOUT'] = '99'
+        settings = SpiderSettings(BaseSpider('name'), crawler.settings)
+        self.assertEqual(settings.getint('DOWNLOAD_TIMEOUT'), 99)
+
+    def test_crawler_defaults(self):
+        crawler = get_crawler({'DOWNLOAD_TIMEOUT': '3'})
+        settings = SpiderSettings(BaseSpider('name'), crawler.settings)
+        self.assertEqual(settings.getint('DOWNLOAD_TIMEOUT'), 3)
+
+    def test_spider_overrides_crawler(self):
+        crawler = get_crawler({'DOWNLOAD_TIMEOUT': '3'})
+        crawler.settings.defaults['DOWNLOAD_TIMEOUT'] = '99'
+        settings = SpiderSettings(BaseSpider('name', DOWNLOAD_TIMEOUT='12'), crawler.settings)
+        self.assertEqual(settings.getint('DOWNLOAD_TIMEOUT'), 12)
+
+    def test_overrides_most_precedence(self):
+        crawler = get_crawler({'DOWNLOAD_TIMEOUT': '3'})
+        crawler.settings.overrides['DOWNLOAD_TIMEOUT'] = '15'
+        settings = SpiderSettings(BaseSpider('name', DOWNLOAD_TIMEOUT='12'), crawler.settings)
+        self.assertEqual(settings.getint('DOWNLOAD_TIMEOUT'), 15)
+
+if __name__ == "__main__":
+    unittest.main()
+

scrapy/utils/deprecate.py

@@ -0,0 +1,9 @@
+"""Some helpers for deprecation messages"""
+
+import warnings
+
+def attribute(obj, oldattr, newattr, version='0.12'):
+    cname = obj.__class__.__name__
+    warnings.warn("%s.%s attribute is deprecated and will be no longer supported "
+        "in Scrapy %s, use %s.%s attribute instead" % \
+        (cname, oldattr, version, cname, newattr), DeprecationWarning, stacklevel=3)

scrapy/utils/test.py

@@ -7,6 +7,9 @@ import os
 import libxml2
 from twisted.trial.unittest import SkipTest
 
+from scrapy.crawler import Crawler
+from scrapy.settings import CrawlerSettings
+
 def libxml2debug(testfunction):
     """Decorator for debugging libxml2 memory leaks inside a function.
     
@@ -39,3 +42,17 @@ def assert_aws_environ():
 
     if 'AWS_ACCESS_KEY_ID' not in os.environ:
         raise SkipTest("AWS keys not found")
+
+def get_crawler(settings_dict=None):
+    """Return an unconfigured Crawler object. If settings_dict is given, it
+    will be used as the settings present in the settings module of the
+    CrawlerSettings.
+    """
+    class SettingsModuleMock(object):
+        pass
+    settings_module = SettingsModuleMock()
+    if settings_dict:
+        for k, v in settings_dict.items():
+            setattr(settings_module, k, v)
+    settings = CrawlerSettings(settings_module)
+    return Crawler(settings)

scrapyd/eggutils.py

@@ -18,7 +18,6 @@ def get_spider_list_from_eggfile(eggfile, project):
             env = os.environ.copy()
             env['SCRAPY_PROJECT'] = project
             env['SCRAPY_EGGFILE'] = f.name
-            env.pop('SCRAPY_SETTINGS_DISABLED', None)
             proc = Popen(pargs, stdout=PIPE, cwd=tmpdir, env=env)
             out = proc.communicate()[0]
             return out.splitlines()