From: W. Trevor King Date: Mon, 9 Dec 2013 05:02:28 +0000 (-0800) Subject: gallery.py: Use HTTPError.content (not .message) for custom responses X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=96f4575f06c0469e5e289bec34af36b3bf34cb8d;p=blog.git gallery.py: Use HTTPError.content (not .message) for custom responses .message should only hold the standard reason phrase from RFC 2616 [1]. [1]: http://tools.ietf.org/html/rfc2616#section-6.1 --- diff --git a/posts/gallery/gallery.py b/posts/gallery/gallery.py index b97835c..c938c8a 100755 --- a/posts/gallery/gallery.py +++ b/posts/gallery/gallery.py @@ -66,7 +66,9 @@ VIDEO_EXTENSIONS = ['.mov', '.mp4', '.ogv'] STREAMING_TYPES = ['video/ogg'] RESPONSES = { # httplib takes half a second to load 200: 'OK', + 400: 'Bad Request', 404: 'Not Found', + 500: 'Internal Server Error', } LOG = _logging.getLogger('gallery.py') @@ -93,6 +95,8 @@ class HTTPError(Exception): def __init__(self, status, message=None, content=None): if message is None: message = RESPONSES[status] + if content is None: + content = message super(HTTPError, self).__init__('{} {}'.format(status, message)) self.status = status self.message = message @@ -218,7 +222,7 @@ class CGIGalleryServer (object): raise HTTPError(404) else: if not _os_path.isfile(path): - raise HTTPError(404, 'nonexistent file') + raise HTTPError(404, content='nonexistent file') def serve(self, url=None, page=0, stream=None): LOG.info('serving url {} (page {})'.format(url, page)) @@ -235,7 +239,7 @@ class CGIGalleryServer (object): else: self.validate_url(url=url, exists=False, directory=True) self.page(url=url, page=page, stream=stream) - raise HTTPError(404, 'unexpected URL type') + raise HTTPError(404, content='unexpected URL type') except HTTPError as e: LOG.error(e.message) self._error(e.status, content=e.content, stream=stream) @@ -265,9 +269,9 @@ class CGIGalleryServer (object): if url is None: return url if not url.startswith(self._base_url): - message = 'cannot convert {} to a relative URL of {}'.format( + content = 'cannot convert {} to a relative URL of {}'.format( url, self._base_url) - raise HTTPError(404, message) + raise HTTPError(404, content=content) if url == self._base_url: return None return url[len(self._base_url):] @@ -331,12 +335,14 @@ class CGIGalleryServer (object): try: root,width,height = base.rsplit('-', 2) except ValueError: - raise HTTPError(404, 'missing width/height in {}'.format(base)) + raise HTTPError( + 400, content='missing width/height in {}'.format(base)) try: width = int(width) height = int(height) except ValueError as e: - raise HTTPError(404, 'invalid width/height: {}'.format(e)) + raise HTTPError( + 400, content='invalid width/height: {}'.format(e)) return ( root + '.jpg', self._thumb, @@ -349,7 +355,7 @@ class CGIGalleryServer (object): getattr(self, '_{}'.format(extension), None), {}, ) - raise HTTPError(404, 'no original URL for {}'.format(url)) + raise HTTPError(400, content='no original URL for {}'.format(url)) def _thumb(self, image, max_width=None, max_height=None): if not _os_path.exists(self._cache_path): @@ -365,7 +371,8 @@ class CGIGalleryServer (object): thumb_path = _os_path.join(cache_dir, thumb_filename) image_path = _os_path.join(self._base_path, image) if not _os_path.isfile(image_path): - raise HTTPError(404, 'image path for thumbnail does not exist') + raise HTTPError( + 404, content='image path for thumbnail does not exist') if (not _os_path.isfile(thumb_path) or _os_path.getmtime(image_path) > _os_path.getmtime(thumb_path)): invoke(['convert', '-format', 'png', '-strip', '-quality', '95', @@ -376,7 +383,8 @@ class CGIGalleryServer (object): def _mp4(self, video, *args): if not video.endswith('.mov'): - raise HTTPError(404, "can't translate {} to MPEGv4".format(video)) + raise HTTPError( + 500, content="can't translate {} to MPEGv4".format(video)) dirname,filename = _os_path.split(video) mp4_filename = image_base(filename) + '.mp4' reldir = _os_path.relpath(dirname, self._base_path) @@ -386,7 +394,7 @@ class CGIGalleryServer (object): mp4_url = _os_path.join(dirname, mp4_filename) mp4_path = _os_path.join(cache_dir, mp4_filename) if not _os_path.isfile(video): - raise HTTPError(404, 'source video path does not exist') + raise HTTPError(404, content='source video path does not exist') if (not _os_path.isfile(mp4_path) or _os_path.getmtime(video) > _os_path.getmtime(mp4_path)): arg = ['ffmpeg', '-i', video, '-acodec', 'libfaac', '-aq', '200', @@ -533,7 +541,8 @@ class CGIGalleryServer (object): LOG.debug('retrieving possibly cached item') mime = _mimetypes.guess_type(url)[0] if mime is None: - raise HTTPError(404, 'unknown mime type for {}'.format(url)) + raise HTTPError( + 500, content='unknown mime type for {}'.format(url)) cache_path = _os_path.join(self._cache_path, url) original_path = _os_path.join(self._base_path, url) path = None @@ -555,8 +564,8 @@ class CGIGalleryServer (object): content = open(path, 'rb') except IOError as e: LOG.error(e) - raise HTTPError(404, 'item not found {}'.format(url)) - header = self._http_header(mime=mime) + raise HTTPError(404, content='item not found {}'.format(url)) + headers = self._http_headers(mime=mime) if mime in STREAMING_TYPES: self._response_stream( header=header, content=content, stream=stream) @@ -566,7 +575,8 @@ class CGIGalleryServer (object): def page(self, url, page=0, stream=None): LOG.debug('HTML page {} {}'.format(url, page)) if not url.endswith('/'): - raise HTTPError(404, 'HTML page URLs must end with a slash') + raise HTTPError( + 404, content='HTML page URLs must end with a slash') abspath = _os_path.join(self._base_path, url) if _os_path.isdir(abspath): self._directory(path=abspath, page=page, stream=stream) @@ -574,7 +584,7 @@ class CGIGalleryServer (object): file_path = abspath[:-1] + extension if _os_path.isfile(file_path): self._page(path=file_path, stream=stream) - raise HTTPError(404, 'unknown HTML page {}'.format(url)) + raise HTTPError(404, content='unknown HTML page {}'.format(url)) def _directory_header(self, path): relpath = _os_path.relpath(path, self._base_path) @@ -659,8 +669,9 @@ class CGIGalleryServer (object): if page < 0 or page >= pages: raise HTTPError( 404, - 'page out of bounds for this gallery 0 <= {:d} < {:d}'.format( - page, pages)) + content=( + 'page out of bounds for this gallery 0 <= {:d} < {:d}' + ).format(page, pages)) first_image = images_per_page * page images = images[first_image:first_image+images_per_page] content = [] @@ -732,7 +743,7 @@ def serve_scgi(server, host='localhost', port=4000): try: url = server.relative_url(url=url) except HTTPError as e: - LOG.error(e.message) + LOG.error(e.content) server._error(e.status, content=e.content, stream=output) except ProcessingComplete: pass