Move harvest logic into ubuntutools.harvest

debian/copyright

@@ -95,6 +95,7 @@ Files: ack-sync
        merge-changelog
        setup-packaging-environment
        syncpackage
+       ubuntutools/harvest.py
 Copyright: 2010,      Benjamin Drung <bdrung@ubuntu.com>
            2007-2011, Canonical Ltd.
            2008,      Jonathan Patrick Davies <jpds@ubuntu.com>

harvest

@@ -26,52 +26,26 @@
 # (c) 2011 Canonical
 
 from optparse import OptionParser
-import urllib2
-import json
 import sys
 
-BASE_URL = "http://harvest.ubuntu.com/"
-URL_STUB = BASE_URL + "opportunities/json/"
+from devscripts.logger import Logger
 
-def opportunity_summary(data):
-    l = []
-    for key in filter(lambda a: a != "total", data.keys()):
-        l += ["%s (%s)" % (key, data[key])]
-    return ", ".join(l)
+from ubuntutools.harvest import Harvest
 
 def main():
     usage = "usage: %prog source-package-name"
     opt_parser = OptionParser(usage)
     (options, args) = opt_parser.parse_args()
-    if not args:
+    if len(args) != 1:
         opt_parser.print_help()
         sys.exit(1)
-    pkg = sys.argv[1]
-    url = URL_STUB + pkg.strip()
-    try:
-        sock = urllib2.urlopen(url)
-    except IOError, e:
-        try:
-            urllib2.urlopen(BASE_URL)
-        except urllib2.URLError, _e:
-            print >> sys.stderr, "Harvest is down."
-            sys.exit(1)
-        print "There is no information in Harvest about package '%s'." % pkg
-        sys.exit(1)
-    response = sock.read()
-    sock.close()
-    data = json.loads(response)
-    print >> sys.stdout, \
-"""%s has %s opportunities: %s
-Find out more: %sopportunities/package/%s""" % (pkg,
-                              data["total"],
-                              opportunity_summary(data),
-                              BASE_URL,
-                              pkg)
+    pkg = args[0].strip()
+
+    print Harvest(pkg).report()
 
 if __name__ == '__main__':
     try:
         main()
     except KeyboardInterrupt:
-        print >> sys.stderr, "Aborted."
+        Logger.error("Aborted.")
         sys.exit(1)

ubuntutools/harvest.py

@@ -0,0 +1,62 @@
+# Copyright (C) 2011 Canonical Ltd., Daniel Holbach, Stefano Rivera
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; version 3.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# See file /usr/share/common-licenses/GPL-3 for more details.
+
+import json
+import os.path
+import sys
+import urllib2
+
+from devscripts.logger import Logger
+
+BASE_URL = "http://harvest.ubuntu.com/"
+
+class Harvest(object):
+    """The harvest data for a package"""
+
+    def __init__(self, package):
+        self.package = package
+        self.human_url = os.path.join(BASE_URL, "opportunities", "package",
+                                      package)
+        self.data_url = os.path.join(BASE_URL, "opportunities", "json", package)
+        self.data = self._get_data()
+
+    def _get_data(self):
+        try:
+            sock = urllib2.urlopen(self.data_url)
+        except IOError:
+            try:
+                urllib2.urlopen(BASE_URL)
+            except urllib2.URLError:
+                Logger.error("Harvest is down.")
+                sys.exit(1)
+            return None
+        response = sock.read()
+        sock.close()
+        return json.loads(response)
+
+    def opportunity_summary(self):
+        l = []
+        for key in filter(lambda a: a != "total", self.data.keys()):
+            l += ["%s (%s)" % (key, self.data[key])]
+        return ", ".join(l)
+
+    def report(self):
+        if self.data is None:
+            return ("There is no information in Harvest about package '%s'."
+                    % self.package)
+        return ("%s has %s opportunities: %s\n"
+                "Find out more: %s"
+                % (self.package,
+                   self.data["total"],
+                   self.opportunity_summary(),
+                   self.human_url))