Add support for basic streams api

Added supoort  for streams api w/ winchester.
Added json deserialization support for datetime & timerange types
Fixed api typo ('distinquished' vs 'distinguished')

Change-Id: Ibae617b5bc58fd9c6f41ae30e90d5d2cbc9fc3fa

.gitreview

@@ -0,0 +1,5 @@
+[gerrit]
+host=review.openstack.org
+port=29418
+project=stackforge/stacktach-klugman.git
+

klugman/base.py

@@ -27,7 +27,7 @@ def dump_response(keys, rows):
     for row in rows:
         x = prettytable.PrettyTable(["Property", "Value"])
         for key in keys:
-            x.add_row([key, row[key]])
+            x.add_row([key, row.get(key)])
         print x
 
 

klugman/jsonutil.py

@@ -0,0 +1,31 @@
+import datetime
+import timex
+import iso8601
+
+
+def decode_datetime(dct, name):
+    return iso8601.parse_date(dct['datetime'], default_timezone=None)
+
+
+def decode_timerange(dct, name):
+    begin = iso8601.parse_date(dct['begin'], default_timezone=None)
+    end = iso8601.parse_date(dct['end'], default_timezone=None)
+    return timex.TimeRange(begin=begin, end=end)
+
+
+def decode_timestamp(dct, name):
+    timestamp = iso8601.parse_date(dct['timestamp'], default_timezone=None)
+    return timex.Timestamp(timestamp)
+
+
+DECODE_MAP = {'datetime': decode_datetime,
+              'timex.TimeRange': decode_timerange,
+              'timex.Timestamp': decode_timestamp}
+
+
+def object_hook(dct):
+    if '__type__' in dct:
+        name = dct['__type__']
+        decoder = DECODE_MAP[name]
+        return decoder(dct, name)
+    return dct

klugman/v1.py

@@ -15,6 +15,7 @@
 
 
 import base
+import jsonutil
 
 from docopt import docopt
 
@@ -36,7 +37,7 @@ class Streams(object):
                 list streams younger than datetime
       --trigger_name <name>
                 list streams with given trigger definition
-      --distinquishing_traits <dtraits>
+      --distinguishing_traits <dtraits>
                 list stream with specific distriquishing traits
 
       Stream states:
@@ -58,12 +59,13 @@ class Streams(object):
 
         response = self.do_streams(version, arguments)
         # Handle cmdline output here, not in do_foo()
-        raw_rows = response.json()
+        raw_rows = response.json(object_hook=jsonutil.object_hook)
 
         # TODO(sandy): This should come from the server-issued
         # schema at some point.
-        keys = ['stream_id', 'state', 'last_updated', 'trigger_name',
-                'distinquishing_traits']
+        keys = ['id', 'state', 'name', 'first_event', 'last_event',
+                'fire_timestamp', 'expire_timestamp',
+                'distinguishing_traits', 'events']
         base.dump_response(keys, raw_rows)
 
     def do_streams(self, version, arguments):
@@ -72,7 +74,7 @@ class Streams(object):
         older = arguments.get('--older_than')
         younger = arguments.get('--younger_than')
         trigger = arguments.get('--trigger_name')
-        traits = arguments.get('--distinquishing_traits')
+        traits = arguments.get('--distinguishing_traits')
         details = arguments.get('--details')
 
         cmd = "streams"
@@ -84,7 +86,7 @@ class Streams(object):
                                     'older_than': older,
                                     'younger_than': younger,
                                     'trigger_name': trigger,
-                                    'distinquishing_traits': traits,
+                                    'distinguishing_traits': traits,
                                     'details': details})
 
         return base.get(version.base_url, cmd, params)

klugman/v2.py

@@ -16,6 +16,7 @@
 
 import base
 import v1
+import jsonutil
 
 from docopt import docopt
 import requests
@@ -38,7 +39,7 @@ class Archives(object):
             print arguments
 
         response = self.do_archives(version, arguments)
-        raw_rows = response.json()
+        raw_rows = response.json(object_hook=jsonutil.object_hook)
 
         keys = ['id', 'filename']
         base.dump_response(keys, raw_rows)

requirements.txt

@@ -1,3 +1,5 @@
 docopt
 prettytable
 requests
+timex
+iso8601