def load_blocks(self, location, blocks, ranges, query):
""" Load one or more blocks of compressed cdx lines, return
a line iterator which decompresses and returns one line at a time,
bounded by query.key and query.end_key
"""
if (logging.getLogger().getEffectiveLevel() <= logging.DEBUG):
msg = 'Loading {b.count} blocks from {loc}:{b.offset}+{b.length}'
logging.debug(msg.format(b=blocks, loc=location))
reader = self.blk_loader.load(location, blocks.offset, blocks.length)
def decompress_block(range_):
decomp = gzip_decompressor()
buff = decomp.decompress(reader.read(range_))
for line in BytesIO(buff):
yield line
def iter_blocks(reader):
try:
for r in ranges:
yield decompress_block(r)
finally:
reader.close()
# iterate over all blocks
iter_ = itertools.chain.from_iterable(iter_blocks(reader))
# start bound
iter_ = linearsearch(iter_, query.key)
# end bound
iter_ = itertools.takewhile(lambda line: line < query.end_key, iter_)
return iter_
def load_blocks(self, location, blocks, ranges, query):
""" Load one or more blocks of compressed cdx lines, return
a line iterator which decompresses and returns one line at a time,
bounded by query.key and query.end_key
"""
if (logging.getLogger().getEffectiveLevel() <= logging.DEBUG):
msg = 'Loading {b.count} blocks from {loc}:{b.offset}+{b.length}'
logging.debug(msg.format(b=blocks, loc=location))
reader = self.blk_loader.load(location, blocks.offset, blocks.length)
def decompress_block(range_):
decomp = gzip_decompressor()
buff = decomp.decompress(reader.read(range_))
for line in BytesIO(buff):
yield line
iter_ = itertools.chain(*itertools.imap(decompress_block, ranges))
# start bound
iter_ = linearsearch(iter_, query.key)
# end bound
end = query.end_key
iter_ = itertools.takewhile(lambda line: line < end, iter_)
return iter_
def load_blocks(self, location, blocks, ranges, query):
if (logging.getLogger().getEffectiveLevel() <= logging.DEBUG):
msg = 'Loading {b.count} blocks from {loc}:{b.offset}+{b.length}'
logging.debug(msg.format(b=blocks, loc=location))
reader = self.blk_loader.load(location, blocks.offset, blocks.length)
def decompress_block(range_):
decomp = gzip_decompressor()
buff = decomp.decompress(reader.read(range_))
return readline_to_iter(BytesIO(buff))
iter_ = itertools.chain(*itertools.imap(decompress_block, ranges))
# start bound
iter_ = linearsearch(iter_, query.key)
# end bound
end = query.end_key
iter_ = itertools.takewhile(lambda line: line < end, iter_)
return iter_
def load_blocks(self, location, blocks, ranges, query):
if (logging.getLogger().getEffectiveLevel() <= logging.DEBUG):
msg = 'Loading {b.count} blocks from {loc}:{b.offset}+{b.length}'
logging.debug(msg.format(b=blocks, loc=location))
reader = self.blk_loader.load(location, blocks.offset, blocks.length)
def decompress_block(range_):
decomp = gzip_decompressor()
buff = decomp.decompress(reader.read(range_))
return readline_to_iter(BytesIO(buff))
iter_ = itertools.chain(*itertools.imap(decompress_block, ranges))
# start bound
iter_ = linearsearch(iter_, query.key)
# end bound
end = query.end_key
iter_ = itertools.takewhile(lambda line: line < end, iter_)
return iter_
