From 6888be4c4628dcf0819e1d574dfc17e10eeeb0d5 Mon Sep 17 00:00:00 2001 From: olaughter Date: Mon, 29 Apr 2024 14:54:48 +0100 Subject: [PATCH] Ensure files are pdfs Uploading invalid pdfs to our cdn leads to errors, so we need to make sure they are valid. Rather then reinventing the wheel ourselves we can make use of pypdf's reader. --- poetry.lock | 48 ++++++++++++++++++-- pyproject.toml | 1 + src/navigator_data_ingest/base/api_client.py | 18 +++++++- 3 files changed, 62 insertions(+), 5 deletions(-) diff --git a/poetry.lock b/poetry.lock index 4b6f54a..8967a6b 100644 --- a/poetry.lock +++ b/poetry.lock @@ -1,4 +1,4 @@ -# This file is automatically @generated by Poetry 1.7.0 and should not be changed by hand. +# This file is automatically @generated by Poetry 1.7.1 and should not be changed by hand. 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"more-itertools", "p [metadata] lock-version = "2.0" python-versions = "^3.9" -content-hash = "1ce9afc12cdc39c21cba182560c1784d96a890d4233d6e9ad62edd0cf95dc3be" +content-hash = "7d830f194eab302ac7466c730f48a084befca2ab0a77404d2280f79a31b78f5a" diff --git a/pyproject.toml b/pyproject.toml index 9d613ad..c0402c6 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -24,6 +24,7 @@ requests = "^2.28.1" tenacity = "^8.1.0" json-logging = "^1.3.0" cpr-data-access = {git = "https://github.com/climatepolicyradar/data-access.git", tag = "0.4.6"} +pypdf = "^4.2.0" [tool.poetry.group.dev-dependencies.dependencies] black = "^22.1.0" diff --git a/src/navigator_data_ingest/base/api_client.py b/src/navigator_data_ingest/base/api_client.py index cb8f494..775a331 100644 --- a/src/navigator_data_ingest/base/api_client.py +++ b/src/navigator_data_ingest/base/api_client.py @@ -1,5 +1,6 @@ """A simple API client for creating documents & associations.""" import hashlib +import io import json import logging from typing import cast @@ -7,12 +8,15 @@ import requests from cloudpathlib import CloudPath, S3Path from cpr_data_access.parser_models import ParserInput +from pypdf import PdfReader +from pypdf.errors import PyPdfError from tenacity import retry from tenacity.stop import stop_after_attempt from tenacity.wait import wait_random_exponential from navigator_data_ingest.base.utils import determine_content_type from navigator_data_ingest.base.types import ( + CONTENT_TYPE_PDF, MULTI_FILE_CONTENT_TYPES, SUPPORTED_CONTENT_TYPES, FILE_EXTENSION_MAPPING, @@ -55,6 +59,7 @@ def upload_document( try: download_response = _download_from_source(session, source_url) content_type = determine_content_type(download_response, source_url) + file_content = download_response.content # Update the result object with the detected content type upload_result.content_type = content_type @@ -65,9 +70,13 @@ def upload_document( if content_type not in SUPPORTED_CONTENT_TYPES: raise UnsupportedContentTypeError(content_type) - + + # Ensure valid file types can be read accordingly + if content_type == CONTENT_TYPE_PDF: + # Invalid pdf should raise a PyPdfError error + PdfReader(io.BytesIO(file_content)) + # Calculate the m5sum & update the result object with the calculated value - file_content = download_response.content file_hash = hashlib.md5(file_content).hexdigest() upload_result.md5_sum = file_hash @@ -107,6 +116,11 @@ def upload_document( f"Uploads for document {import_id} at '{source_url}' could not be completed because " f"the content type '{e.content_type}' is not currently supported." ) + except PyPdfError as e: + _LOGGER.warn( + f"Uploads for document {import_id} at '{source_url}' could not be completed because " + f"the pdf document is invalid: {e.with_traceback(e.__traceback__)}" + ) except Exception: _LOGGER.exception(f"Downloading source document {import_id} failed") finally: