def add_exifs(self, entries):
"""Add metadata to multiple files.
Args:
entries: Iterable of (path, sha256, exif) tuples. Where
exif is any dictionary-like object with exif attributes.
"""
# Split the work into chunks
for chunk in chunks(entries, size=1000):
with self.database.session_scope() as session:
index = {(path, sha256): exif for path, sha256, exif in chunk}
query = session.query(Files).options(joinedload(Files.exif))
files = query.filter(self._by_path_and_hash(list(
index.keys()))).all()
# Update existing files
for file in files:
exif = index.pop((file.file_path, file.sha256))
exif_entity = file.exif or Exif(file=file)
self._update_exif(exif_entity, exif)
file.exif = exif_entity
# Create missing files
new_files = []
for (path, sha256), exif in index.items():
new_file = Files(file_path=path, sha256=sha256)
exif_entity = Exif(file=new_file)
self._update_exif(exif_entity, exif)
new_file.exif = exif_entity
new_files.append(new_file)
session.add_all(new_files)
def add_metadata(self, entries):
"""Add metadata to multiple files.
Args:
entries: Iterable of (path, sha256, metadata) tuples. Where
metadata is any dictionary-like with metadata attributes.
"""
# Split the work into chunks
for chunk in chunks(entries, size=1000):
with self.database.session_scope() as session:
index = {(path, sha256): metadata
for path, sha256, metadata in chunk}
query = session.query(Files).options(joinedload(Files.meta))
files = query.filter(self._by_path_and_hash(list(
index.keys()))).all()
# Update existing files
for file in files:
metadata = index.pop((file.file_path, file.sha256))
metadata_entity = file.meta or VideoMetadata(file=file)
self._update_metadata(metadata_entity, metadata)
file.meta = metadata_entity
# Create missing files
new_files = []
for (path, sha256), metadata in index.items():
new_file = Files(file_path=path, sha256=sha256)
metadata_entity = VideoMetadata(file=new_file)
self._update_metadata(metadata_entity, metadata)
new_file.meta = metadata_entity
new_files.append(new_file)
session.add_all(new_files)
def add_signatures(self, entries):
"""Bulk add signatures.
Args:
entries: Iterable of (path, sha256, signature) tuples.
"""
# Split the work into chunks
for chunk in chunks(entries, size=1000):
with self.database.session_scope() as session:
index = {(path, sha256, url): sig
for path, sha256, url, sig in chunk}
query = (session.query(Files).options(
joinedload(Files.signature)))
files = query.filter(self._by_path_and_hash(list(
index.keys()))).all()
# Update existing files
for file in files:
sig_value = index.pop(
(file.file_path, file.sha256, file.file_url))
sig_entity = file.signature or Signature(file_id=file.id)
sig_entity.signature = sig_value
file.signature = sig_entity
# Create missing files
new_files = []
for (path, sha256, url), sig_value in index.items():
new_files.append(
Files(file_path=path,
sha256=sha256,
file_url=url,
signature=Signature(signature=sig_value)))
session.add_all(new_files)
def test_transform_match():
source = Files(id=1, file_path="foo")
target = Files(id=2, file_path="bar")
match = Matches(query_video_file=source,
match_video_file=target,
distance=0.5)
# Check outgoing match
data = Transform.file_match_dict(match, source.id)
assert data["distance"] == match.distance
assert data["file"]["id"] == target.id
assert data["file"]["file_path"] == target.file_path
# Check incoming match
data = Transform.file_match_dict(match, target.id)
assert data["distance"] == match.distance
assert data["file"]["id"] == source.id
assert data["file"]["file_path"] == source.file_path
def make_file(prefix="", length=42, ext="flv", audio=True, date=datetime.date(2000, 1, 1),
scenes=((0, 1), (1, 2))):
"""Create unique file."""
path = f"{prefix}some/path/{uuid()}.{ext}"
sha256 = f"hash-of-{path}"
return Files(file_path=path, sha256=sha256,
exif=Exif(General_FileExtension=ext, Audio_Duration=float(audio),
General_Encoded_Date=date, General_Duration=length),
meta=VideoMetadata(),
scenes=[Scene(start_time=start, duration=duration) for start, duration in scenes])
def add_file_signature(self, path, sha256, sig_value):
"""Add video file signature."""
with self.database.session_scope() as session:
query = session.query(Files).options(joinedload(Files.signature))
file = query.filter(Files.file_path == path,
Files.sha256 == sha256).one_or_none()
file = file or Files(file_path=path, sha256=sha256)
sig_entity = file.signature or Signature(file_id=file.id)
sig_entity.signature = sig_value
file.signature = sig_entity
session.add(file)
def test_transform_partial():
file = Files(file_path="foo",
sha256="bar",
meta=None,
exif=None,
signature=None)
data = Transform.file_dict(file, meta=True, signature=True, exif=True)
assert data.get("meta") is None
assert data.get("exif") is None
assert data.get("signature") is None
def test_transform_file():
file = Files(file_path="foo", exif=Exif(General_FileSize=42.0))
# Exclude exif
data = Transform.file_dict(file)
assert data["file_path"] == file.file_path
assert "exif" not in data
# Include exif
data = Transform.file_dict(file, exif=True)
assert data["file_path"] == file.file_path
assert data["exif"]["General_FileSize"] == file.exif.General_FileSize
def add_scenes(self, entries, override=False):
"""Bulk add scenes.
Args:
entries: Iterable of (path, sha256, durations) tuples. Where
durations is an iterable of scene durations in seconds.
override: Delete existing scenes if any.
"""
# Split the work into chunks
for chunk in chunks(entries, size=1000):
with self.database.session_scope() as session:
index = {(path, sha256): durations
for path, sha256, durations in chunk}
query = session.query(Files).options(joinedload(Files.scenes))
files = query.filter(self._by_path_and_hash(list(
index.keys()))).all()
# Delete existing scenes if needed
if override:
self._delete_file_scenes(session, *files)
# Update existing files
for file in files:
durations = index.pop((file.file_path, file.sha256))
# Skip write operation if scenes already exist
if len(file.scenes) > 0:
continue
# Otherwise write scenes
file.scenes = self._create_scenes(file, durations)
# Create missing files
new_files = []
for (path, sha256), durations in index.items():
new_file = Files(file_path=path, sha256=sha256)
new_file.scenes = self._create_scenes(new_file, durations)
new_files.append(new_file)
session.add_all(new_files)
def make_file(prefix="", length=42, ext="flv", scenes=((0, 1), (1, 2))):
"""Create unique file."""
path = f"{prefix}some/path/{uuid()}.{ext}"
sha256 = f"hash-of-{path}"
return Files(file_path=path,
sha256=sha256,
exif=Exif(General_FileExtension=ext,
General_Duration=length * 1000),
meta=VideoMetadata(),
scenes=[
Scene(start_time=start, duration=duration)
for start, duration in scenes
])
def add_file_exif(self, path, sha256, exif):
"""Add a single file EXIF attributes.
Args:
path (String): Source video file path.
sha256 (String): Source video file hash.
exif: Dictionary object containing EXIF attributes.
"""
with self.database.session_scope() as session:
query = session.query(Files).options(joinedload(Files.exif))
file = query.filter(Files.file_path == path,
Files.sha256 == sha256).one_or_none()
file = file or Files(file_path=path, sha256=sha256)
exif_entity = file.exif or Exif(file=file)
self._update_exif(exif_entity, exif)
file.exif = exif_entity
session.add(exif_entity)
def add_file_metadata(self, path, sha256, metadata):
"""Add a single file metadata.
Args:
path (String): Source video file path.
sha256 (String): Source video file hash.
metadata: Dictionary object containing metadata attributes.
"""
with self.database.session_scope() as session:
query = session.query(Files).options(joinedload(Files.meta))
file = query.filter(Files.file_path == path,
Files.sha256 == sha256).one_or_none()
file = file or Files(file_path=path, sha256=sha256)
metadata_entity = file.meta or VideoMetadata(file=file)
self._update_metadata(metadata_entity, metadata)
file.meta = metadata_entity
session.add(metadata_entity)
def add_file_scenes(self, path, sha256, durations, override=False):
"""Add scenes for a single video file."""
with self.database.session_scope() as session:
query = session.query(Files).options(joinedload(Files.scenes))
file = query.filter(Files.file_path == path,
Files.sha256 == sha256).one_or_none()
file = file or Files(file_path=path, sha256=sha256)
# Delete existing scenes if needed
if override:
self._delete_file_scenes(session, file)
# Skip write operation if scenes already exist
if len(file.scenes) > 0:
return
# Write new scenes
file.scenes = self._create_scenes(file, durations)
session.add_all(file.scenes)
def _files_for_matches(session, connections):
"""
Get or create files for connections of the form
(path_1,sha256_1,path_2,sha256_2).
"""
file_identifiers = set(
DBResultStorage._matches_file_identifiers(connections))
existing_files = (session.query(Files).filter(
DBResultStorage._by_path_and_hash(file_identifiers)).all())
# Get missing files (path,hash) ids
for file in existing_files:
file_identifiers.remove((file.file_path, file.sha256))
# Create missing files
new_files = []
for path, sha256 in file_identifiers:
new_file = Files(file_path=path, sha256=sha256)
new_files.append(new_file)
session.add_all(new_files)
return existing_files + new_files
