Plasma C extensions (#34)

* switch plasma from ctypes to python C API

* clang-format

* various fixes

lib/python/ray/worker.py

@@ -29,11 +29,11 @@ WORKER_MODE = 1
 PYTHON_MODE = 2
 SILENT_MODE = 3
 
-def random_object_id():
-  return photon.ObjectID("".join([chr(random.randint(0, 255)) for _ in range(20)]))
-
 def random_string():
-  return "".join([chr(random.randint(0, 255)) for _ in range(20)])
+  return np.random.bytes(20)
+
+def random_object_id():
+  return photon.ObjectID(random_string())
 
 class FunctionID(object):
   def __init__(self, function_id):
@@ -418,7 +418,7 @@ class Worker(object):
     # Serialize and put the object in the object store.
     schema, size, serialized = numbuf_serialize(value)
     size = size + 4096 * 4 + 8 # The last 8 bytes are for the metadata offset. This is temporary.
-    buff = self.plasma_client.create(objectid.id(), size, buffer(schema))
+    buff = self.plasma_client.create(objectid.id(), size, bytearray(schema))
     data = np.frombuffer(buff.buffer, dtype="byte")[8:]
     metadata_offset = numbuf.write_to_buffer(serialized, memoryview(data))
     np.frombuffer(buff.buffer, dtype="int64", count=1)[0] = metadata_offset

lib/python/setup.py

@@ -19,7 +19,7 @@ setup(name="ray",
       package_data={"common": ["thirdparty/redis-3.2.3/src/redis-server"],
                     "plasma": ["build/plasma_store",
                                "build/plasma_manager",
-                               "build/plasma_client.so"],
+                               "lib/python/libplasma.so"],
                     "photon": ["build/photon_scheduler",
                                "libphoton.so"]},
       cmdclass={"install": install},