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