fix: Fix another compatibility issue for unstructured-client==0.26.0 (#79)

* fix: Fix another compatibility issue for unstructured-client==0.26.0

The internals of the client have changed, and the `PartitionParameters` class is now a Pydantic
model. We were using `dataclass.fields` to get a list of available params, which will break against
the new client. For compatibility, let's try to access `PartitionParameters.__fields`, and fall back
to the dataclass approach for clients < 0.26.0.

Testing:

Try a simple ingest command with the old and new clients:

```
pip install unstructured-client==0.25.5

unstructured-ingest local --input-path /path/to/some/files --output-dir local-ingest-output --num-processes 2 --recursive --partition-by-api --partition-endpoint https://api.unstructuredapp.io/general/v0/general --api-key $MY_SERVERLESS_KEY

pip install git+https://github.com/Unstructured-IO/unstructured-python-client

Traceback (most recent call last):
  File "/Users/austin/.pyenv/versions/3.9.16/envs/unstructured-ingest/lib/python3.9/site-packages/unstructured_ingest/v2/pipeline/interfaces.py", line 158, in run_async
    return await self._run_async(fn=fn, **kwargs)
  File "/Users/austin/.pyenv/versions/3.9.16/envs/unstructured-ingest/lib/python3.9/site-packages/unstructured_ingest/v2/pipeline/steps/partition.py", line 66, in _run_async
    partitioned_content = await fn(**fn_kwargs)
  File "/Users/austin/.pyenv/versions/3.9.16/envs/unstructured-ingest/lib/python3.9/site-packages/unstructured_ingest/v2/processes/partitioner.py", line 215, in run_async
    return await self.partition_via_api(filename, metadata=metadata, **kwargs)
  File "/Users/austin/.pyenv/versions/3.9.16/envs/unstructured-ingest/lib/python3.9/site-packages/unstructured_ingest/utils/dep_check.py", line 50, in wrapper_async
    return await func(*args, **kwargs)
  File "/Users/austin/.pyenv/versions/3.9.16/envs/unstructured-ingest/lib/python3.9/site-packages/unstructured_ingest/v2/processes/partitioner.py", line 200, in partition_via_api
    partition_params = self.create_partition_parameters(filename=filename)
  File "/Users/austin/.pyenv/versions/3.9.16/envs/unstructured-ingest/lib/python3.9/site-packages/unstructured_ingest/v2/processes/partitioner.py", line 167, in create_partition_parameters
    possible_fields = [f.name for f in fields(PartitionParameters)]
  File "/Users/austin/.pyenv/versions/3.9.16/lib/python3.9/dataclasses.py", line 1035, in fields
    raise TypeError('must be called with a dataclass type or instance')

pip install -e .
```

* Cut the 0.0.7 release

Author: awalker4

CHANGELOG.md

@@ -1,4 +1,4 @@
-## 0.0.7-dev3
+## 0.0.7
 
 ### Enhancements
 
@@ -8,6 +8,7 @@
 ### Fixes
 
 * **Weaviate access configs access** Weaviate access config uses pydantic Secret and it needs to be resolved to the secret value when being used. This was fixed. 
+* **unstructured-client compatibility fix** Fix an error when accessing the fields on `PartitionParameters` in the new 0.26.0 Python client.
 
 ## 0.0.6
 

unstructured_ingest/__version__.py

@@ -1 +1 @@
-__version__ = "0.0.7-dev3"  # pragma: no cover
+__version__ = "0.0.7"  # pragma: no cover

unstructured_ingest/v2/processes/partitioner.py

@@ -164,7 +164,14 @@ def create_partition_parameters(self, filename: Path) -> "PartitionParameters":
         from unstructured_client.models.shared import Files, PartitionParameters
 
         partition_request = self.config.to_partition_kwargs()
-        possible_fields = [f.name for f in fields(PartitionParameters)]
+
+        # Note(austin): PartitionParameters is a Pydantic model in v0.26.0
+        # Prior to this it was a dataclass which doesn't have .__fields
+        try:
+            possible_fields = PartitionParameters.__fields__
+        except AttributeError:
+            possible_fields = [f.name for f in fields(PartitionParameters)]
+
         filtered_partition_request = {
             k: v for k, v in partition_request.items() if k in possible_fields
         }