chore(deps): bump nltk from 3.8.1 to 3.9.1

.gitignore

@@ -12,4 +12,5 @@ dist
 .mypy_cache
 .venv
 .pytest_cache
+.idea
 **/__pycache__

airbyte_cdk/sources/file_based/file_types/unstructured_parser.py

@@ -29,16 +29,25 @@
 from airbyte_cdk.utils import is_cloud_environment
 from airbyte_cdk.utils.traced_exception import AirbyteTracedException
 from unstructured.file_utils.filetype import (
+    EXT_TO_FILETYPE,
     FILETYPE_TO_MIMETYPE,
     STR_TO_FILETYPE,
     FileType,
     detect_filetype,
 )
+import nltk
 
 unstructured_partition_pdf = None
 unstructured_partition_docx = None
 unstructured_partition_pptx = None
 
+try:
+    nltk.data.find("tokenizers/punkt.zip")
+    nltk.data.find("tokenizers/punkt_tab.zip")
+except LookupError:
+    nltk.download("punkt")
+    nltk.download("punkt_tab")
+
 
 def optional_decode(contents: Union[str, bytes]) -> str:
     if isinstance(contents, bytes):
@@ -108,9 +117,11 @@ async def infer_schema(
         format = _extract_format(config)
         with stream_reader.open_file(file, self.file_read_mode, None, logger) as file_handle:
             filetype = self._get_filetype(file_handle, file)
-
             if filetype not in self._supported_file_types() and not format.skip_unprocessable_files:
-                raise self._create_parse_error(file, self._get_file_type_error_message(filetype))
+                raise self._create_parse_error(
+                    file,
+                    self._get_file_type_error_message(filetype),
+                )
 
             return {
                 "content": {
@@ -159,6 +170,10 @@ def parse_records(
                     logger.warn(f"File {file.uri} cannot be parsed. Skipping it.")
                 else:
                     raise e
+            except Exception as e:
+                exception_str = str(e)
+                logger.error(f"File {file.uri} caused an error during parsing: {exception_str}.")
+                raise e
 
     def _read_file(
         self,
@@ -176,20 +191,32 @@ def _read_file(
             # check whether unstructured library is actually available for better error message and to ensure proper typing (can't be None after this point)
             raise Exception("unstructured library is not available")
 
-        filetype = self._get_filetype(file_handle, remote_file)
+        filetype: FileType | None = self._get_filetype(file_handle, remote_file)
 
-        if filetype == FileType.MD or filetype == FileType.TXT:
+        if filetype is None or filetype not in self._supported_file_types():
+            raise self._create_parse_error(
+                remote_file,
+                self._get_file_type_error_message(filetype),
+            )
+        if filetype in {FileType.MD, FileType.TXT}:
             file_content: bytes = file_handle.read()
             decoded_content: str = optional_decode(file_content)
             return decoded_content
-        if filetype not in self._supported_file_types():
-            raise self._create_parse_error(remote_file, self._get_file_type_error_message(filetype))
         if format.processing.mode == "local":
-            return self._read_file_locally(file_handle, filetype, format.strategy, remote_file)
+            return self._read_file_locally(
+                file_handle,
+                filetype,
+                format.strategy,
+                remote_file,
+            )
         elif format.processing.mode == "api":
             try:
                 result: str = self._read_file_remotely_with_retries(
-                    file_handle, format.processing, filetype, format.strategy, remote_file
+                    file_handle,
+                    format.processing,
+                    filetype,
+                    format.strategy,
+                    remote_file,
                 )
             except Exception as e:
                 # If a parser error happens during remotely processing the file, this means the file is corrupted. This case is handled by the parse_records method, so just rethrow.
@@ -336,7 +363,11 @@ def _read_file_locally(
 
         return self._render_markdown([element.to_dict() for element in elements])
 
-    def _create_parse_error(self, remote_file: RemoteFile, message: str) -> RecordParseError:
+    def _create_parse_error(
+        self,
+        remote_file: RemoteFile,
+        message: str,
+    ) -> RecordParseError:
         return RecordParseError(
             FileBasedSourceError.ERROR_PARSING_RECORD, filename=remote_file.uri, message=message
         )
@@ -360,32 +391,51 @@ def _get_filetype(self, file: IOBase, remote_file: RemoteFile) -> Optional[FileT
         # detect_filetype is either using the file name or file content
         # if possible, try to leverage the file name to detect the file type
         # if the file name is not available, use the file content
-        file_type = detect_filetype(
-            filename=remote_file.uri,
-        )
-        if file_type is not None and not file_type == FileType.UNK:
+        file_type: FileType | None = None
+        try:
+            file_type = detect_filetype(
+                filename=remote_file.uri,
+            )
+        except Exception:
+            # Path doesn't exist locally. Try something else...
+            pass
+
+        if file_type and file_type != FileType.UNK:
             return file_type
 
         type_based_on_content = detect_filetype(file=file)
+        file.seek(0)  # detect_filetype is reading to read the file content, so we need to reset
 
-        # detect_filetype is reading to read the file content
-        file.seek(0)
+        if type_based_on_content and type_based_on_content != FileType.UNK:
+            return type_based_on_content
 
-        return type_based_on_content
+        extension = "." + remote_file.uri.split(".")[-1].lower()
+        if extension in EXT_TO_FILETYPE:
+            return EXT_TO_FILETYPE[extension]
+
+        return None
 
     def _supported_file_types(self) -> List[Any]:
         return [FileType.MD, FileType.PDF, FileType.DOCX, FileType.PPTX, FileType.TXT]
 
-    def _get_file_type_error_message(self, file_type: FileType) -> str:
+    def _get_file_type_error_message(
+        self,
+        file_type: FileType | None,
+    ) -> str:
         supported_file_types = ", ".join([str(type) for type in self._supported_file_types()])
-        return f"File type {file_type} is not supported. Supported file types are {supported_file_types}"
+        return f"File type {file_type or 'None'!s} is not supported. Supported file types are {supported_file_types}"
 
     def _render_markdown(self, elements: List[Any]) -> str:
         return "\n\n".join((self._convert_to_markdown(el) for el in elements))
 
     def _convert_to_markdown(self, el: Dict[str, Any]) -> str:
         if dpath.get(el, "type") == "Title":
-            heading_str = "#" * (dpath.get(el, "metadata/category_depth", default=1) or 1)
+            category_depth = dpath.get(el, "metadata/category_depth", default=1) or 1
+            if not isinstance(category_depth, int):
+                category_depth = (
+                    int(category_depth) if isinstance(category_depth, (str, float)) else 1
+                )
+            heading_str = "#" * category_depth
             return f"{heading_str} {dpath.get(el, 'text')}"
         elif dpath.get(el, "type") == "ListItem":
             return f"- {dpath.get(el, 'text')}"