1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
import asyncio
import os
import sys
from urllib.parse import urlparse
from gql import Client, gql
from gql.transport.appsync_auth import AppSyncApiKeyAuthentication
from gql.transport.appsync_websockets import AppSyncWebsocketsTransport
# Uncomment the following lines to enable debug output
# import logging
# logging.basicConfig(level=logging.DEBUG)
async def main():
# Should look like:
# https://XXXXXXXXXXXXXXXXXXXXXXXXXX.appsync-api.REGION.amazonaws.com/graphql
url = os.environ.get("AWS_GRAPHQL_API_ENDPOINT")
api_key = os.environ.get("AWS_GRAPHQL_API_KEY")
if url is None or api_key is None:
print("Missing environment variables")
sys.exit()
# Extract host from url
host = str(urlparse(url).netloc)
print(f"Host: {host}")
auth = AppSyncApiKeyAuthentication(host=host, api_key=api_key)
transport = AppSyncWebsocketsTransport(url=url, auth=auth)
async with Client(transport=transport) as session:
subscription = gql(
"""
subscription onCreateMessage {
onCreateMessage {
message
}
}
"""
)
print("Waiting for messages...")
async for result in session.subscribe(subscription):
print(result)
asyncio.run(main())
|
