setprio: utilize project_status() and refactor to support list of stagings.

The existing setup was inconsistent in that it was copied from check, but
documented that it supported multiple specific stagings. Assuming that
would be a desired feature anyway it has been reworked.

osc-staging.py

@@ -252,7 +252,7 @@ def do_staging(self, subcmd, opts, *args):
     elif cmd == 'frozenage':
         min_args, max_args = 0, None
     elif cmd == 'setprio':
-        min_args, max_args = 0, 1
+        min_args, max_args = 0, None
     elif cmd == 'check':
         min_args, max_args = 0, 1
     elif cmd == 'select':

osclib/prio_command.py

@@ -48,24 +48,21 @@ class PrioCommand(object):
                     print e
 
 
-    def perform(self, project=None):
+    def perform(self, projects=None):
         """
-        Check one staging project verbosibly or all of them at once
-        :param project: project to check, None for all
+        Set priority on specific stagings or all of them at once
+        :param projects: projects on which to set priority, None for all
         """
 
-        query = {'format': 'json'}
-        path = [ 'project', 'staging_projects', self.api.project ]
-        if project:
-            path += project
-        url = self.api.makeurl(path, query=query)
-        info = json.load(self.api.retried_GET(url))
-        if not project:
-            for prj in info:
-                if not prj['selected_requests']:
-                    continue
-                self._setprio(prj)
-        else:
+        aggregate = False
+        if not projects:
+            aggregate = True
+            projects = self.api.get_staging_projects()
+
+        for project in projects:
+            info = self.api.project_status(project, aggregate)
+            if not info['selected_requests']:
+                continue
             self._setprio(info)
 
         return True