forked from MirrorHub/synapse
Basic implementation of backup media store
This commit is contained in:
Erik Johnston
parent
f807f7f804
commit
bf4fb1fb40
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@ -70,7 +70,17 @@ class ContentRepositoryConfig(Config):
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self.max_upload_size = self.parse_size(config["max_upload_size"])
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self.max_image_pixels = self.parse_size(config["max_image_pixels"])
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self.max_spider_size = self.parse_size(config["max_spider_size"])
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self.media_store_path = self.ensure_directory(config["media_store_path"])
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self.backup_media_store_path = config.get("backup_media_store_path")
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if self.backup_media_store_path:
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self.ensure_directory(self.backup_media_store_path)
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self.synchronous_backup_media_store = config.get(
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"synchronous_backup_media_store", False
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)
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self.uploads_path = self.ensure_directory(config["uploads_path"])
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self.dynamic_thumbnails = config["dynamic_thumbnails"]
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self.thumbnail_requirements = parse_thumbnail_requirements(
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@ -115,6 +125,14 @@ class ContentRepositoryConfig(Config):
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# Directory where uploaded images and attachments are stored.
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media_store_path: "%(media_store)s"
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# A secondary directory where uploaded images and attachments are
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# stored as a backup.
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# backup_media_store_path: "%(media_store)s"
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# Whether to wait for successful write to backup media store before
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# returning successfully.
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# synchronous_backup_media_store: false
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# Directory where in-progress uploads are stored.
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uploads_path: "%(uploads_path)s"
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@ -33,7 +33,7 @@ from synapse.api.errors import SynapseError, HttpResponseException, \
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from synapse.util.async import Linearizer
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from synapse.util.stringutils import is_ascii
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from synapse.util.logcontext import preserve_context_over_fn
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from synapse.util.logcontext import preserve_context_over_fn, preserve_fn
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from synapse.util.retryutils import NotRetryingDestination
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import os
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@ -59,7 +59,12 @@ class MediaRepository(object):
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self.store = hs.get_datastore()
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self.max_upload_size = hs.config.max_upload_size
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self.max_image_pixels = hs.config.max_image_pixels
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self.filepaths = MediaFilePaths(hs.config.media_store_path)
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self.backup_filepaths = None
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if hs.config.backup_media_store_path:
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self.backup_filepaths = MediaFilePaths(hs.config.backup_media_store_path)
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self.dynamic_thumbnails = hs.config.dynamic_thumbnails
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self.thumbnail_requirements = hs.config.thumbnail_requirements
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@ -87,18 +92,43 @@ class MediaRepository(object):
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if not os.path.exists(dirname):
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os.makedirs(dirname)
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@defer.inlineCallbacks
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def _write_to_file(self, source, file_name_func):
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def write_file_thread(file_name):
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source.seek(0) # Ensure we read from the start of the file
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with open(file_name, "wb") as f:
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shutil.copyfileobj(source, f)
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fname = file_name_func(self.filepaths)
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self._makedirs(fname)
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# Write to the main repository
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yield preserve_context_over_fn(threads.deferToThread, write_file_thread, fname)
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# Write to backup repository
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if self.backup_filepaths:
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backup_fname = file_name_func(backup_filepaths)
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self._makedirs(backup_fname)
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# We can either wait for successful writing to the backup repository
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# or write in the background and immediately return
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if hs.config.synchronous_backup_media_store:
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yield preserve_context_over_fn(
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threads.deferToThread, write_file_thread, backup_fname,
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)
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else:
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preserve_fn(threads.deferToThread)(write_file, backup_fname)
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defer.returnValue(fname)
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@defer.inlineCallbacks
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def create_content(self, media_type, upload_name, content, content_length,
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auth_user):
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media_id = random_string(24)
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fname = self.filepaths.local_media_filepath(media_id)
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self._makedirs(fname)
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# This shouldn't block for very long because the content will have
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# already been uploaded at this point.
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with open(fname, "wb") as f:
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f.write(content)
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fname = yield self._write_to_file(
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content, lambda f: f.local_media_filepath(media_id)
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)
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logger.info("Stored local media in file %r", fname)
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@ -253,9 +283,8 @@ class MediaRepository(object):
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def _get_thumbnail_requirements(self, media_type):
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return self.thumbnail_requirements.get(media_type, ())
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def _generate_thumbnail(self, input_path, t_path, t_width, t_height,
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def _generate_thumbnail(self, thumbnailer, t_width, t_height,
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t_method, t_type):
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thumbnailer = Thumbnailer(input_path)
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m_width = thumbnailer.width
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m_height = thumbnailer.height
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@ -267,36 +296,40 @@ class MediaRepository(object):
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return
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if t_method == "crop":
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t_len = thumbnailer.crop(t_path, t_width, t_height, t_type)
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t_byte_source = thumbnailer.crop(t_width, t_height, t_type)
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elif t_method == "scale":
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t_width, t_height = thumbnailer.aspect(t_width, t_height)
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t_width = min(m_width, t_width)
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t_height = min(m_height, t_height)
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t_len = thumbnailer.scale(t_path, t_width, t_height, t_type)
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t_byte_source = thumbnailer.scale(t_width, t_height, t_type)
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else:
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t_len = None
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t_byte_source = None
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return t_len
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return t_byte_source
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@defer.inlineCallbacks
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def generate_local_exact_thumbnail(self, media_id, t_width, t_height,
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t_method, t_type):
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input_path = self.filepaths.local_media_filepath(media_id)
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t_path = self.filepaths.local_media_thumbnail(
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media_id, t_width, t_height, t_type, t_method
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)
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self._makedirs(t_path)
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t_len = yield preserve_context_over_fn(
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thumbnailer = Thumbnailer(input_path)
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t_byte_source = yield preserve_context_over_fn(
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threads.deferToThread,
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self._generate_thumbnail,
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input_path, t_path, t_width, t_height, t_method, t_type
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thumbnailer, t_width, t_height, t_method, t_type
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)
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if t_len:
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if t_byte_source:
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output_path = yield self._write_to_file(
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content,
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lambda f: f.local_media_thumbnail(
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media_id, t_width, t_height, t_type, t_method
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)
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)
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logger.info("Stored thumbnail in file %r", output_path)
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yield self.store.store_local_thumbnail(
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media_id, t_width, t_height, t_type, t_method, t_len
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media_id, t_width, t_height, t_type, t_method, len(t_byte_source.getvalue())
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)
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defer.returnValue(t_path)
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@ -306,21 +339,25 @@ class MediaRepository(object):
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t_width, t_height, t_method, t_type):
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input_path = self.filepaths.remote_media_filepath(server_name, file_id)
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t_path = self.filepaths.remote_media_thumbnail(
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server_name, file_id, t_width, t_height, t_type, t_method
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)
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self._makedirs(t_path)
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t_len = yield preserve_context_over_fn(
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thumbnailer = Thumbnailer(input_path)
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t_byte_source = yield preserve_context_over_fn(
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threads.deferToThread,
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self._generate_thumbnail,
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input_path, t_path, t_width, t_height, t_method, t_type
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thumbnailer, t_width, t_height, t_method, t_type
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)
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if t_len:
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if t_byte_source:
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output_path = yield self._write_to_file(
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content,
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lambda f: f.remote_media_thumbnail(
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server_name, file_id, t_width, t_height, t_type, t_method
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)
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)
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logger.info("Stored thumbnail in file %r", output_path)
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yield self.store.store_remote_media_thumbnail(
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server_name, media_id, file_id,
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t_width, t_height, t_type, t_method, t_len
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t_width, t_height, t_type, t_method, len(t_byte_source.getvalue())
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)
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defer.returnValue(t_path)
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@ -351,59 +388,32 @@ class MediaRepository(object):
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local_thumbnails = []
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def generate_thumbnails():
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scales = set()
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crops = set()
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for r_width, r_height, r_method, r_type in requirements:
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if r_method == "scale":
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t_width, t_height = thumbnailer.aspect(r_width, r_height)
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scales.add((
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min(m_width, t_width), min(m_height, t_height), r_type,
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))
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elif r_method == "crop":
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crops.add((r_width, r_height, r_type))
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for t_width, t_height, t_type in scales:
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t_method = "scale"
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if url_cache:
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t_path = self.filepaths.url_cache_thumbnail(
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media_id, t_width, t_height, t_type, t_method
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)
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else:
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t_path = self.filepaths.local_media_thumbnail(
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media_id, t_width, t_height, t_type, t_method
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)
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self._makedirs(t_path)
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t_len = thumbnailer.scale(t_path, t_width, t_height, t_type)
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t_byte_source = self._generate_thumbnail(
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thumbnailer, r_width, r_height, r_method, r_type,
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)
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local_thumbnails.append((
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media_id, t_width, t_height, t_type, t_method, t_len
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))
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for t_width, t_height, t_type in crops:
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if (t_width, t_height, t_type) in scales:
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# If the aspect ratio of the cropped thumbnail matches a purely
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# scaled one then there is no point in calculating a separate
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# thumbnail.
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continue
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t_method = "crop"
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if url_cache:
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t_path = self.filepaths.url_cache_thumbnail(
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media_id, t_width, t_height, t_type, t_method
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)
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else:
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t_path = self.filepaths.local_media_thumbnail(
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media_id, t_width, t_height, t_type, t_method
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)
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self._makedirs(t_path)
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t_len = thumbnailer.crop(t_path, t_width, t_height, t_type)
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local_thumbnails.append((
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media_id, t_width, t_height, t_type, t_method, t_len
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r_width, r_height, r_method, r_type, t_byte_source
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))
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yield preserve_context_over_fn(threads.deferToThread, generate_thumbnails)
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for l in local_thumbnails:
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yield self.store.store_local_thumbnail(*l)
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for t_width, t_height, t_method, t_type, t_byte_source in local_thumbnails:
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if url_cache:
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path_name_func = lambda f: f.url_cache_thumbnail(
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media_id, t_width, t_height, t_type, t_method
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)
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else:
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path_name_func = lambda f: f.local_media_thumbnail(
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media_id, t_width, t_height, t_type, t_method
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)
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yield self._write_to_file(t_byte_source, path_name_func)
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yield self.store.store_local_thumbnail(
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media_id, t_width, t_height, t_type, t_method, len(t_byte_source.getvalue())
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)
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defer.returnValue({
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"width": m_width,
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@ -433,51 +443,32 @@ class MediaRepository(object):
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)
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return
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scales = set()
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crops = set()
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for r_width, r_height, r_method, r_type in requirements:
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if r_method == "scale":
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t_width, t_height = thumbnailer.aspect(r_width, r_height)
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scales.add((
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min(m_width, t_width), min(m_height, t_height), r_type,
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))
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elif r_method == "crop":
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crops.add((r_width, r_height, r_type))
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for t_width, t_height, t_type in scales:
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t_method = "scale"
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t_path = self.filepaths.remote_media_thumbnail(
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server_name, file_id, t_width, t_height, t_type, t_method
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t_byte_source = self._generate_thumbnail(
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thumbnailer, r_width, r_height, r_method, r_type,
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)
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self._makedirs(t_path)
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t_len = thumbnailer.scale(t_path, t_width, t_height, t_type)
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remote_thumbnails.append([
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server_name, media_id, file_id,
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t_width, t_height, t_type, t_method, t_len
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])
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for t_width, t_height, t_type in crops:
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if (t_width, t_height, t_type) in scales:
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# If the aspect ratio of the cropped thumbnail matches a purely
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# scaled one then there is no point in calculating a separate
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# thumbnail.
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continue
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t_method = "crop"
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t_path = self.filepaths.remote_media_thumbnail(
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server_name, file_id, t_width, t_height, t_type, t_method
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)
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self._makedirs(t_path)
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t_len = thumbnailer.crop(t_path, t_width, t_height, t_type)
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remote_thumbnails.append([
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server_name, media_id, file_id,
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t_width, t_height, t_type, t_method, t_len
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])
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remote_thumbnails.append((
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r_width, r_height, r_method, r_type, t_byte_source
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))
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yield preserve_context_over_fn(threads.deferToThread, generate_thumbnails)
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for r in remote_thumbnails:
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yield self.store.store_remote_media_thumbnail(*r)
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for t_width, t_height, t_method, t_type, t_byte_source in local_thumbnails:
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path_name_func = lambda f: f.remote_media_thumbnail(
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server_name, media_id, file_id, t_width, t_height, t_type, t_method
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)
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yield self._write_to_file(t_byte_source, path_name_func)
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yield self.store.store_remote_media_thumbnail(
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server_name, media_id, file_id,
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t_width, t_height, t_type, t_method, len(t_byte_source.getvalue())
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)
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defer.returnValue({
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"width": m_width,
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"height": m_height,
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@ -50,12 +50,12 @@ class Thumbnailer(object):
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else:
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return ((max_height * self.width) // self.height, max_height)
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def scale(self, output_path, width, height, output_type):
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def scale(self, width, height, output_type):
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"""Rescales the image to the given dimensions"""
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scaled = self.image.resize((width, height), Image.ANTIALIAS)
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return self.save_image(scaled, output_type, output_path)
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return self._encode_image(scaled, output_type)
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def crop(self, output_path, width, height, output_type):
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def crop(self, width, height, output_type):
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"""Rescales and crops the image to the given dimensions preserving
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aspect::
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(w_in / h_in) = (w_scaled / h_scaled)
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@ -82,13 +82,9 @@ class Thumbnailer(object):
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crop_left = (scaled_width - width) // 2
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crop_right = width + crop_left
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cropped = scaled_image.crop((crop_left, 0, crop_right, height))
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return self.save_image(cropped, output_type, output_path)
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return self._encode_image(cropped, output_type)
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def save_image(self, output_image, output_type, output_path):
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def _encode_image(self, output_image, output_type):
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output_bytes_io = BytesIO()
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output_image.save(output_bytes_io, self.FORMATS[output_type], quality=80)
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output_bytes = output_bytes_io.getvalue()
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with open(output_path, "wb") as output_file:
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output_file.write(output_bytes)
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logger.info("Stored thumbnail in file %r", output_path)
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return len(output_bytes)
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return output_bytes_io
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@ -93,7 +93,7 @@ class UploadResource(Resource):
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# TODO(markjh): parse content-dispostion
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content_uri = yield self.media_repo.create_content(
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media_type, upload_name, request.content.read(),
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media_type, upload_name, request.content,
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content_length, requester.user
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)
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