Revision 47462eda snf-pithos-backend/pithos/backends/lib/hashfiler/blocker.py
| b/snf-pithos-backend/pithos/backends/lib/hashfiler/blocker.py | ||
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class Blocker(object): |
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"""Blocker. |
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Required constructor parameters: blocksize, blockpath, hashtype,
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blockpool. |
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Required constructor parameters: blocksize, blockpath, hashtype.
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Optional blockpool.
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""" |
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def __init__(self, **params): |
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params['blockpool'] = 'blocks' |
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self.rblocker = RadosBlocker(**params) |
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self.fblocker = FileBlocker(**params) |
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self.hashlen = self.rblocker.hashlen |
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# def _get_rear_block(self, blkhash, create=0): |
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# return self.rblocker._get_rear_block(blkhash, create) |
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self.rblocker = None |
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try: |
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if params['blockpool']: |
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self.rblocker = RadosBlocker(**params) |
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except: |
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pass |
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# def _check_rear_block(self, blkhash): |
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# return self.rblocker._check_rear_block(blkhash) |
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# return self.rblocker._check_rear_block(blkhash) and |
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# self.fblocker._check_rear_block(blkhash) |
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self.fblocker = FileBlocker(**params) |
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self.hashlen = self.fblocker.hashlen |
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def block_hash(self, data): |
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"""Hash a block of data""" |
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return self.rblocker.block_hash(data)
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return self.fblocker.block_hash(data)
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def block_ping(self, hashes): |
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"""Check hashes for existence and |
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return those missing from block storage. |
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""" |
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# return self.rblocker.block_ping(hashes) |
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r = self.rblocker.block_ping(hashes) |
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r = [] |
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if self.rblocker: |
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r = self.rblocker.block_ping(hashes) |
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f = self.fblocker.block_ping(hashes) |
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return union(r, f) |
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|
| ... | ... | |
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missing is a list of indices in that list indicating |
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which blocks were missing from the store. |
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""" |
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# return self.rblocker.block_stor(blocklist) |
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(hashes, r_missing) = self.rblocker.block_stor(blocklist) |
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(_, f_missing) = self.fblocker.block_stor(blocklist) |
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r_missing = [] |
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(hashes, f_missing) = self.fblocker.block_stor(blocklist) |
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if self.rblocker: |
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(_, r_missing) = self.rblocker.block_stor(blocklist) |
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return (hashes, union(r_missing, f_missing)) |
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|
| ... | ... | |
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and a data 'patch' applied at offset. Return: |
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(the hash of the new block, if the block already existed) |
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""" |
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# return self.rblocker.block_delta(blkhash, offset, data)
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r_hash = None
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r_existed = True |
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(f_hash, f_existed) = self.fblocker.block_delta(blkhash, offset, data) |
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(r_hash, r_existed) = self.rblocker.block_delta(blkhash, offset, data) |
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if self.rblocker: |
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(r_hash, r_existed) = self.rblocker.block_delta(blkhash, offset, data) |
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if not r_hash and not f_hash: |
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return None, None |
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if not r_hash: |
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if self.rblocker and not r_hash:
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block = self.fblocker.block_retr((blkhash,)) |
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if not block: |
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return None, None |
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