mirror of https://github.com/borgbackup/borg.git
52 lines
992 B
Plaintext
52 lines
992 B
Plaintext
"""
|
|
Dedupstore
|
|
==========
|
|
|
|
cache = Cache(path,)
|
|
|
|
for file in files:
|
|
chunks = chunkify(file)
|
|
for chunk in chunkify(file):
|
|
if chunk.sha in cache:
|
|
cache.chunk_inc_ref(chunk)
|
|
else:
|
|
fs.add_chunk(chunk)
|
|
|
|
entry = Entry
|
|
archive.add(entry)
|
|
Repository layout
|
|
-----------------
|
|
REPO/README
|
|
REPO/VERSION
|
|
REPO/tid = x
|
|
REPO/data/
|
|
REPO/txn-active/tid
|
|
REPO/txn-active/add/<PATH>/
|
|
REPO/txn-active/delete/<PATH>/
|
|
REPO/txn-active/tid
|
|
REPO/txn-commit/add/<PATH>/
|
|
REPO/txn-commit/delete/<PATH>/
|
|
|
|
REPO/archives/<ARCHIVENAME>
|
|
REPO/blocks/XX/YY/XYZ
|
|
|
|
txn_completed/add/<PATH>/
|
|
txn_completed/delete/<PATH>/
|
|
|
|
API
|
|
---
|
|
"""
|
|
class Cache(object):
|
|
|
|
def chunk_inc_ref(self, chunk):
|
|
self.chunk_refcount.setdefault(chunk.sha, 0)
|
|
self.chunk_refcount[chunk.sha] += 1
|
|
|
|
def chunk_dec_ref(self, chunk):
|
|
assert self.chunk_refcount.get(chunk.sha, 0) > 0
|
|
self.chunk_refcount[chunk.sha] -= 1
|
|
if self.chunk_refcount[chunk.sha] == 0:
|
|
self.fs.delete_chunk(self.sha)
|
|
|
|
txn = txn_begin()
|