elm.ords.services.cpu.PDFLoader

class PDFLoader(**kwargs)

Bases: ProcessPoolService

Class to load PDFs in a ProcessPoolExecutor.

Parameters:

**kwargs – Keyword-value argument pairs to pass to concurrent.futures.ProcessPoolExecutor. By default, None.

Methods

acquire_resources()	Open thread pool and temp directory
call(*args, **kwargs)	Call the service.
process(fn, pdf_bytes, **kwargs)	Write URL doc to file asynchronously.
process_using_futures(fut, *args, **kwargs)	Process a call to the service.
release_resources()	Shutdown thread pool and cleanup temp directory

Attributes

MAX_CONCURRENT_JOBS	Max number of concurrent job submissions.
can_process	Always True (limiting is handled by asyncio)
name	Service name used to pull the correct queue object.

property can_process

Always True (limiting is handled by asyncio)

Type:

bool

async process(fn, pdf_bytes, **kwargs)

Write URL doc to file asynchronously.

Parameters:

• doc (elm.web.document.Document) – Document containing meta information about the file. Must have a “source” key in the metadata dict containing the URL, which will be converted to a file name using compute_fn_from_url().

• file_content (str | bytes) – File content, typically string text for HTML files and bytes for PDF file.

• make_name_unique (bool, optional) – Option to make file name unique by adding a UUID at the end of the file name. By default, False.

Returns:

Path – Path to output file.

MAX_CONCURRENT_JOBS = 10000

Max number of concurrent job submissions.

acquire_resources()

Open thread pool and temp directory

async classmethod call(*args, **kwargs)

Call the service.

Parameters:

*args, **kwargs – Positional and keyword arguments to be passed to the underlying service processing function.

Returns:

obj – A response object from the underlying service.

property name

Service name used to pull the correct queue object.

Type:

str

async process_using_futures(fut, *args, **kwargs)

Process a call to the service.

Parameters:

• fut (asyncio.Future) – A future object that should get the result of the processing operation. If the processing function returns answer, this method should call fut.set_result(answer).

• **kwargs – Keyword arguments to be passed to the underlying processing function.

release_resources()

Shutdown thread pool and cleanup temp directory