|
1
|
|
|
import asyncio |
|
2
|
|
|
from urllib.parse import urlparse |
|
3
|
|
|
|
|
4
|
|
|
from aiogremlin.driver.cluster import Cluster |
|
5
|
|
|
from gremlin_python.driver import serializer |
|
6
|
|
|
from aiogremlin.remote.driver_remote_side_effects import ( |
|
7
|
|
|
AsyncRemoteTraversalSideEffects) |
|
8
|
|
|
from gremlin_python.driver.remote_connection import RemoteTraversal |
|
9
|
|
|
|
|
10
|
|
|
|
|
11
|
|
|
__author__ = 'David M. Brown ([email protected])' |
|
12
|
|
|
|
|
13
|
|
|
|
|
14
|
|
|
class DriverRemoteConnection: |
|
15
|
|
|
""" |
|
16
|
|
|
Remote connection to a Gremlin Server. Do not instantiate directly, |
|
17
|
|
|
instead use :py:meth:`DriverRemoteConnection.open` or |
|
18
|
|
|
:py:meth:`DriverRemoteConnection.using` |
|
19
|
|
|
|
|
20
|
|
|
:param aiogremlin.driver.client.Client client: |
|
21
|
|
|
:param asyncio.BaseEventLoop loop: |
|
22
|
|
|
:param aiogremlin.driver.cluster.Cluster cluster: |
|
23
|
|
|
""" |
|
24
|
|
|
|
|
25
|
|
|
def __init__(self, client, loop, *, cluster=None): |
|
26
|
|
|
self._client = client |
|
27
|
|
|
self._loop = loop |
|
28
|
|
|
self._cluster = cluster |
|
29
|
|
|
|
|
30
|
|
|
@property |
|
31
|
|
|
def client(self): |
|
32
|
|
|
return self._client |
|
33
|
|
|
|
|
34
|
|
|
@property |
|
35
|
|
|
def config(self): |
|
36
|
|
|
return self._cluster.config |
|
37
|
|
|
|
|
38
|
|
|
@classmethod |
|
39
|
|
|
async def using(cls, cluster, aliases=None): |
|
40
|
|
|
""" |
|
41
|
|
|
Create a :py:class:`DriverRemoteConnection` using a specific |
|
42
|
|
|
:py:class:`Cluster<aiogremlin.driver.cluster.Cluster>` |
|
43
|
|
|
|
|
44
|
|
|
:param aiogremlin.driver.cluster.Cluster cluster: |
|
45
|
|
|
:param dict aliases: Optional mapping for aliases. Default is `None`. |
|
46
|
|
|
Also accepts `str` argument which will be assigned to `g` |
|
47
|
|
|
""" |
|
48
|
|
|
client = await cluster.connect(aliases=aliases) |
|
49
|
|
|
loop = cluster._loop |
|
50
|
|
|
return cls(client, loop) |
|
51
|
|
|
|
|
52
|
|
|
@classmethod |
|
53
|
|
|
async def open(cls, url=None, aliases=None, loop=None, *, |
|
54
|
|
|
graphson_reader=None, graphson_writer=None, **config): |
|
55
|
|
|
""" |
|
56
|
|
|
:param str url: Optional url for host Gremlin Server |
|
57
|
|
|
|
|
58
|
|
|
:param dict aliases: Optional mapping for aliases. Default is `None`. |
|
59
|
|
|
Also accepts `str` argument which will be assigned to `g` |
|
60
|
|
|
:param asyncio.BaseEventLoop loop: |
|
61
|
|
|
:param graphson_reader: Custom graphson_reader |
|
62
|
|
|
:param graphson_writer: Custom graphson_writer |
|
63
|
|
|
:param config: Optional cluster configuration passed as kwargs or `dict` |
|
64
|
|
|
""" |
|
65
|
|
|
if url: |
|
66
|
|
|
parsed_url = urlparse(url) |
|
67
|
|
|
config.update({ |
|
68
|
|
|
'scheme': parsed_url.scheme, |
|
69
|
|
|
'hosts': [parsed_url.hostname], |
|
70
|
|
|
'port': parsed_url.port}) |
|
71
|
|
|
if isinstance(aliases, str): |
|
72
|
|
|
aliases = {'g': aliases} |
|
73
|
|
|
if not loop: |
|
74
|
|
|
loop = asyncio.get_event_loop() |
|
75
|
|
|
message_serializer = serializer.GraphSONMessageSerializer( |
|
76
|
|
|
reader=graphson_reader, |
|
77
|
|
|
writer=graphson_writer) |
|
78
|
|
|
config.update({'message_serializer': message_serializer}) |
|
79
|
|
|
cluster = await Cluster.open(loop, aliases=aliases, **config) |
|
80
|
|
|
client = await cluster.connect() |
|
81
|
|
|
return cls(client, loop, cluster=cluster) |
|
82
|
|
|
|
|
83
|
|
|
async def close(self): |
|
84
|
|
|
""" |
|
85
|
|
|
Close underlying cluster if applicable. If created with |
|
86
|
|
|
:py:meth:`DriverRemoteConnection.using`, cluster is NOT closed. |
|
87
|
|
|
""" |
|
88
|
|
|
if self._cluster: |
|
89
|
|
|
await self._cluster.close() |
|
90
|
|
|
|
|
91
|
|
|
async def submit(self, bytecode): |
|
92
|
|
|
"""Submit bytecode to the Gremlin Server""" |
|
93
|
|
|
result_set = await self._client.submit(bytecode) |
|
94
|
|
|
side_effects = AsyncRemoteTraversalSideEffects(result_set.request_id, |
|
95
|
|
|
self._client) |
|
96
|
|
|
return RemoteTraversal(result_set, side_effects) |
|
97
|
|
|
|
|
98
|
|
|
async def __aenter__(self): |
|
99
|
|
|
return self |
|
100
|
|
|
|
|
101
|
|
|
async def __aexit__(self, exc_type, exc, tb): |
|
102
|
|
|
await self.close() |
|
103
|
|
|
self._client = None |
|
104
|
|
|
self._cluster = None |
|
105
|
|
|
|
goblin-ogm /
aiogremlin
