Weaviate: cannot connect to WCS when the URL contains "weaviate.cloud"

[anakin87]

Describe the bug
I cannot connect to WCS when the URL contains "weaviate.cloud"

This part of code may be involved

haystack-core-integrations/integrations/weaviate/src/haystack_integrations/document_stores/weaviate/document_store.py

Line 175 in b897441

if self._url and self._url.startswith("http") and self._url.endswith(".weaviate.network"):

To Reproduce

from haystack.utils.auth import Secret
from haystack_integrations.document_stores.weaviate import WeaviateDocumentStore, AuthApiKey
from haystack import Document

auth_client_secret = AuthApiKey(Secret.from_token("..."))

document_store = WeaviateDocumentStore(url="https://a1lsp92prd2qychjo7bbw.c0.us-west3.gcp.weaviate.cloud",
    auth_client_secret=auth_client_secret)

docs = [Document(content="text1", meta={"name": "doc1"}), Document(content="text2", meta={"name": "doc2"})]

document_store.write_documents(docs)

print(document_store.filter_documents())

Error:

Traceback (most recent call last):
  File "/home/anakin87/apps/experiments/weavtry/.venv/lib/python3.10/site-packages/weaviate/connect/v4.py", line 700, in _ping_grpc
    res: health_pb2.HealthCheckResponse = await self._grpc_channel.unary_unary(
  File "/home/anakin87/apps/experiments/weavtry/.venv/lib/python3.10/site-packages/grpc/aio/_call.py", line 327, in __await__
    raise _create_rpc_error(
grpc.aio._call.AioRpcError: <AioRpcError of RPC that terminated with:
        status = StatusCode.DEADLINE_EXCEEDED
        details = "Deadline Exceeded"
        debug_error_string = "UNKNOWN:Error received from peer  {grpc_message:"Deadline Exceeded", grpc_status:4, created_time:"2024-09-06T12:22:50.133038374-07:00"}"
>

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/anakin87/apps/experiments/weavtry/wcs.py", line 17, in <module>
    document_store.write_documents(docs)
  File "/home/anakin87/apps/experiments/weavtry/.venv/lib/python3.10/site-packages/haystack_integrations/document_stores/weaviate/document_store.py", line 485, in write_documents
    return self._batch_write(documents)
  File "/home/anakin87/apps/experiments/weavtry/.venv/lib/python3.10/site-packages/haystack_integrations/document_stores/weaviate/document_store.py", line 407, in _batch_write
    with self.client.batch.dynamic() as batch:
  File "/home/anakin87/apps/experiments/weavtry/.venv/lib/python3.10/site-packages/haystack_integrations/document_stores/weaviate/document_store.py", line 204, in client
    self._client.connect()
  File "/home/anakin87/apps/experiments/weavtry/.venv/lib/python3.10/site-packages/weaviate/syncify.py", line 23, in sync_method
    return _EventLoopSingleton.get_instance().run_until_complete(
  File "/home/anakin87/apps/experiments/weavtry/.venv/lib/python3.10/site-packages/weaviate/event_loop.py", line 40, in run_until_complete
    return fut.result()
  File "/usr/lib/python3.10/concurrent/futures/_base.py", line 458, in result
    return self.__get_result()
  File "/usr/lib/python3.10/concurrent/futures/_base.py", line 403, in __get_result
    raise self._exception
  File "/home/anakin87/apps/experiments/weavtry/.venv/lib/python3.10/site-packages/weaviate/client_base.py", line 152, in connect
    await self._connection.connect(self._skip_init_checks)
  File "/home/anakin87/apps/experiments/weavtry/.venv/lib/python3.10/site-packages/weaviate/connect/v4.py", line 181, in connect
    raise e
  File "/home/anakin87/apps/experiments/weavtry/.venv/lib/python3.10/site-packages/weaviate/connect/v4.py", line 178, in connect
    await asyncio.gather(self._ping_grpc(), self.__check_package_version())
  File "/home/anakin87/apps/experiments/weavtry/.venv/lib/python3.10/site-packages/weaviate/connect/v4.py", line 710, in _ping_grpc
    raise WeaviateGRPCUnavailableError(
weaviate.exceptions.WeaviateGRPCUnavailableError: 
Weaviate v1.26.1 makes use of a high-speed gRPC API as well as a REST API.
Unfortunately, the gRPC health check against Weaviate could not be completed.

This error could be due to one of several reasons:
- The gRPC traffic at the specified port is blocked by a firewall.
- gRPC is not enabled or incorrectly configured on the server or the client.
    - Please check that the server address and port (a1lsp92prd2qychjo7bbw.c0.us-west3.gcp.weaviate.cloud:50051) are correct.
- your connection is unstable or has a high latency. In this case you can:
    - increase init-timeout in `weaviate.connect_to_local(additional_config=wvc.init.AdditionalConfig(timeout=wvc.init.Timeout(init=X)))`
    - disable startup checks by connecting using `skip_init_checks=True`

Describe your environment (please complete the following information):

• Haystack version: 2.5.0
• Integration version: 2.2.0