Fix issue with logging across processes

CHANGELOG.md

@@ -0,0 +1,130 @@
+## v2.4.2 (2025-02-24)
+
+* Fix issue where only the main process has its logger configured
+
+## v2.4.1 (2025-02-24)
+
+* Fix compatibility issues with the new OCRmyPDF API
+* Remove support for Python 3.10
+
+## v2.4.0 (2025-02-24)
+
+* Migrate to `uv` from `pyenv` + `poetry`
+* Update dependencies
+
+## v2.3.1 (2025-10-28)
+
+* Fix mixed-up email format
+
+## v2.3.0 (2025-10-28)
+
+* Remove support for Python 3.9
+* Migrate to standardized `pyproject.toml`
+* Update dependencies
+
+## v2.2.15 (2025-07-02)
+
+* Add support for installation via `pipx`
+
+## v2.2.14 (2025-05-27)
+
+* Improve installation notes
+* Bump djvulibre-python version
+
+## v2.2.13 (2025-02-12)
+
+* Fail-safe quality settings for non-JPEG images
+
+## v2.2.12 (2025-01-27)
+
+* Update pytest_image_diff and fix newly broken tests
+
+## v2.2.11 (2025-01-26)
+
+* Update dependencies
+
+## v2.2.10 (2024-10-25)
+
+* Improve interface with OCRmyPDF
+* Fix CI build
+
+## v2.2.9 (2024-10-25)
+
+* Improve type hints
+* Update dependencies
+
+## v2.2.8 (2024-10-18)
+
+* Support single characters in the text layer
+
+## v2.2.7 (2024-08-27)
+
+* Improve tab and newline handling
+
+## v2.2.6 (2024-08-05)
+
+* Fix accidental whitespace removal from text blocks
+
+## v2.2.5 (2024-07-20)
+
+* Re-add ability to force the image mode (RGB/Grayscale/Monochrome)
+
+## v2.2.4 (2024-02-24)
+
+* Update dependencies
+
+## v2.2.3 (2023-12-09)
+
+* Fix CI build
+* Ignore invalid UTF-8 sequences
+* Ignore unrecognized page titles in the outline (#23)
+
+## v2.2.2 (2023-10-29)
+
+* Update dependencies
+
+## v2.2.1 (2023-11-06)
+
+* Handle invalid PDF pages
+* Fix exception in text layer processing (#20)
+
+## v2.2.0 (2023-10-28)
+
+* Add options for disabling the text layer and for directly running OCR
+
+## v2.1.5 (2023-10-27)
+
+* Fix inverted colors in images (#16)
+
+## v2.1.4 (2023-10-06)
+
+* Fix typo in logging code
+
+## v2.1.3 (2023-10-06)
+
+* Improve logging
+
+## v2.1.2 (2023-10-02)
+
+* Accidental version bump
+
+## v2.1.1 (2023-10-02)
+
+* Remove debug code
+
+## v2.1.0 (2023-10-02)
+
+* Add support for OCRmyPDF
+
+## v2.0.2 (2023-08-03)
+
+* Update some other dependencies
+* Replace `python-djvulibre` with `djvulibre-python`
+
+## v2.0.1 (2023-06-22)
+
+* Minor improvements in packaging
+
+## v2.0.0 (2023-05-04)
+
+* Fully rewrite

dpsprep/dpsprep.py

@@ -17,7 +17,8 @@
 from .workdir import WorkingDirectory
 
 
-def process_page_bg(workdir: WorkingDirectory, mode: ImageMode, quality: int | None, i: int) -> None:
+def process_page_bg(workdir: WorkingDirectory, mode: ImageMode, quality: int | None, i: int, *, verbose: bool) -> None:
+    configure_loguru(verbose=verbose)
     page_number = i + 1
 
     if workdir.get_page_pdf_path(i).exists():
@@ -47,10 +48,13 @@ def process_page_bg(workdir: WorkingDirectory, mode: ImageMode, quality: int | N
     loguru.logger.debug(f'Image data with size {human_readable_size(pdf_size)} from page {page_number} processed in {time() - start_time:.2f}s and written to working directory.')
 
 
-def process_text(workdir: WorkingDirectory) -> None:
+def process_text(workdir: WorkingDirectory, *, verbose: bool) -> None:
+    configure_loguru(verbose=verbose)
+
     if workdir.text_layer_pdf_path.exists():
         loguru.logger.info('Text data already processed.')
         return
+
     loguru.logger.debug('Processing text data.')
 
     start_time = time()
@@ -144,11 +148,11 @@ def dpsprep(  # noqa: C901, PLR0912, PLR0913, PLR0915
     tasks = list[multiprocessing.pool.AsyncResult]()
 
     if not no_text:
-        tasks.append(pool.apply_async(func=process_text, args=[workdir]))
+        tasks.append(pool.apply_async(func=process_text, args=[workdir], kwds={'verbose': verbose}))
 
     for i in range(len(document.pages)):
         # Cannot pass the page object itself because it does not support serialization for IPC
-        tasks.append(pool.apply_async(func=process_page_bg, args=[workdir, mode, quality, i]))
+        tasks.append(pool.apply_async(func=process_page_bg, args=[workdir, mode, quality, i], kwds={'verbose': verbose}))
 
     pool.close()
     pool_is_working = True

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "dpsprep"
-version = "2.4.1"
+version = "2.4.2"
 description = "A DjVu to PDF converter with a focus on small output size and the ability to preserve document outlines and text layers"
 requires-python = ">=3.11, <4.0"
 authors = [