[WIP] turn the config into a component of the app

scrapyd/config.py

@@ -4,11 +4,15 @@
 from ConfigParser import SafeConfigParser, NoSectionError, NoOptionError
 from os.path import expanduser
 
+from zope.interface import implements
 from scrapy.utils.conf import closest_scrapy_cfg
 
+from scrapyd.interfaces import IConfig
+
 class Config(object):
     """A ConfigParser wrapper to support defaults when calling instance
     methods, and also tied to a single section"""
+    implements(IConfig)
 
     SECTION = 'scrapyd'
 

scrapyd/interfaces.py

@@ -107,3 +107,23 @@ def get_environment(message, slot):
         `message` is the message received from the IPoller.next() method
         `slot` is the Launcher slot where the process will be running.
         """
+
+
+class IConfig(Interface):
+    """A component to provide access to the active configuration"""
+
+    def get(option, default=None):
+        """Return the specified `option` from the config"""
+
+    def getint(option, default=None):
+        """Return the specified integer `option` from the config"""
+
+    def getfloat(option, default=None):
+        """Return the specified float `option` from the config"""
+
+    def getboolean(option, default=None):
+        """Return the specified boolean `option` from the config"""
+
+    def items(section, default=None):
+        """Return a list of (name, value) pairs
+        for each `option` in the scrapyd section"""