cc/cirrus_home: bin/ix.py annotate

annotate bin/ix.py @ 114:6467024cd072

all parts working, idempotency achieved

author	Henry S. Thompson <ht@inf.ed.ac.uk>
date	Mon, 26 Apr 2021 17:18:29 +0000
parents	3119bca71181
children	63898fde9751

rev	line source
105 baf56ff538f8 convert to rich directory structure per 2019-35 Henry S. Thompson <ht@inf.ed.ac.uk> parents: 104 diff changeset	1 #!/usr/bin/env python3
94 d60073ec798a just strugging with argparse Henry S. Thompson <ht@inf.ed.ac.uk> parents: diff changeset	2 '''Extract request records from Common Crawl WARC-format files
105 baf56ff538f8 convert to rich directory structure per 2019-35 Henry S. Thompson <ht@inf.ed.ac.uk> parents: 104 diff changeset	3 given length, offset and filename triples.
94 d60073ec798a just strugging with argparse Henry S. Thompson <ht@inf.ed.ac.uk> parents: diff changeset	4 Input one triple on command line, or
d60073ec798a just strugging with argparse Henry S. Thompson <ht@inf.ed.ac.uk> parents: diff changeset	5 triples from stdin as tab-delimited lines
d60073ec798a just strugging with argparse Henry S. Thompson <ht@inf.ed.ac.uk> parents: diff changeset	6 or complete cdx index lines.
105 baf56ff538f8 convert to rich directory structure per 2019-35 Henry S. Thompson <ht@inf.ed.ac.uk> parents: 104 diff changeset	7 In all cases by 'filename' is meant crawlid/segmentid/filename
94 d60073ec798a just strugging with argparse Henry S. Thompson <ht@inf.ed.ac.uk> parents: diff changeset	8
98 1a4c5fdc2923 help format hacking done Henry S. Thompson <ht@inf.ed.ac.uk> parents: 97 diff changeset	9 Note that if no output flag(s) is/are given, the whole WARC record will be output, more efficiently than would be the case if -whb is given.'''
94 d60073ec798a just strugging with argparse Henry S. Thompson <ht@inf.ed.ac.uk> parents: diff changeset	10
108 9e5b117dc461 using Popen to run igzip (also not great) Henry S. Thompson <ht@inf.ed.ac.uk> parents: 107 diff changeset	11 import sys, argparse, regex, os, shutil, io, gzip, time
110 f148c2366faa back to IGzipFile Henry S. Thompson <ht@inf.ed.ac.uk> parents: 109 diff changeset	12 from isal import igzip
f148c2366faa back to IGzipFile Henry S. Thompson <ht@inf.ed.ac.uk> parents: 109 diff changeset	13 #from subprocess import Popen, PIPE
108 9e5b117dc461 using Popen to run igzip (also not great) Henry S. Thompson <ht@inf.ed.ac.uk> parents: 107 diff changeset	14 #import asyncio
97 2b880f2ce894 basic help format hacking works Henry S. Thompson <ht@inf.ed.ac.uk> parents: 94 diff changeset	15
98 1a4c5fdc2923 help format hacking done Henry S. Thompson <ht@inf.ed.ac.uk> parents: 97 diff changeset	16 HACK_USAGE=regex.compile('\[-x\]\n\s*\[length\] \[offset\] \[filename\]')
105 baf56ff538f8 convert to rich directory structure per 2019-35 Henry S. Thompson <ht@inf.ed.ac.uk> parents: 104 diff changeset	17 BINOUT=sys.stdout.buffer
107 007f35b9df9c added support for copying to/using /dev/shm or /tmp Henry S. Thompson <ht@inf.ed.ac.uk> parents: 106 diff changeset	18 FPAT="/%s/%s/orig/warc/%s"
94 d60073ec798a just strugging with argparse Henry S. Thompson <ht@inf.ed.ac.uk> parents: diff changeset	19
97 2b880f2ce894 basic help format hacking works Henry S. Thompson <ht@inf.ed.ac.uk> parents: 94 diff changeset	20 class HackFormat(argparse.RawDescriptionHelpFormatter):
2b880f2ce894 basic help format hacking works Henry S. Thompson <ht@inf.ed.ac.uk> parents: 94 diff changeset	21 def format_help(self):
2b880f2ce894 basic help format hacking works Henry S. Thompson <ht@inf.ed.ac.uk> parents: 94 diff changeset	22 global FOO
2b880f2ce894 basic help format hacking works Henry S. Thompson <ht@inf.ed.ac.uk> parents: 94 diff changeset	23 FOO=argparse.RawDescriptionHelpFormatter.format_help(self)
98 1a4c5fdc2923 help format hacking done Henry S. Thompson <ht@inf.ed.ac.uk> parents: 97 diff changeset	24 return HACK_USAGE.sub('\n [ ( -x \| length offset filename ) ]',
1a4c5fdc2923 help format hacking done Henry S. Thompson <ht@inf.ed.ac.uk> parents: 97 diff changeset	25 FOO)
100 f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	26
107 007f35b9df9c added support for copying to/using /dev/shm or /tmp Henry S. Thompson <ht@inf.ed.ac.uk> parents: 106 diff changeset	27 def process(options,buf,root,filename,offset,length,whole):
007f35b9df9c added support for copying to/using /dev/shm or /tmp Henry S. Thompson <ht@inf.ed.ac.uk> parents: 106 diff changeset	28 rfn=root+filename
007f35b9df9c added support for copying to/using /dev/shm or /tmp Henry S. Thompson <ht@inf.ed.ac.uk> parents: 106 diff changeset	29 if root!="/beegfs/common_crawl":
007f35b9df9c added support for copying to/using /dev/shm or /tmp Henry S. Thompson <ht@inf.ed.ac.uk> parents: 106 diff changeset	30 if not os.path.exists(rfn):
007f35b9df9c added support for copying to/using /dev/shm or /tmp Henry S. Thompson <ht@inf.ed.ac.uk> parents: 106 diff changeset	31 if not os.path.exists(os.path.dirname(rfn)):
007f35b9df9c added support for copying to/using /dev/shm or /tmp Henry S. Thompson <ht@inf.ed.ac.uk> parents: 106 diff changeset	32 os.makedirs(os.path.dirname(rfn))
108 9e5b117dc461 using Popen to run igzip (also not great) Henry S. Thompson <ht@inf.ed.ac.uk> parents: 107 diff changeset	33 with io.FileIO('/beegfs/common_crawl'+filename,'r') as infile, \
9e5b117dc461 using Popen to run igzip (also not great) Henry S. Thompson <ht@inf.ed.ac.uk> parents: 107 diff changeset	34 io.FileIO(rfn,'w') as outfile:
9e5b117dc461 using Popen to run igzip (also not great) Henry S. Thompson <ht@inf.ed.ac.uk> parents: 107 diff changeset	35 #shutil.copyfileobj(infile,outfile,12810241024)
9e5b117dc461 using Popen to run igzip (also not great) Henry S. Thompson <ht@inf.ed.ac.uk> parents: 107 diff changeset	36 while True:
9e5b117dc461 using Popen to run igzip (also not great) Henry S. Thompson <ht@inf.ed.ac.uk> parents: 107 diff changeset	37 l=infile.readinto(buf)
9e5b117dc461 using Popen to run igzip (also not great) Henry S. Thompson <ht@inf.ed.ac.uk> parents: 107 diff changeset	38 if l==0:
9e5b117dc461 using Popen to run igzip (also not great) Henry S. Thompson <ht@inf.ed.ac.uk> parents: 107 diff changeset	39 break
9e5b117dc461 using Popen to run igzip (also not great) Henry S. Thompson <ht@inf.ed.ac.uk> parents: 107 diff changeset	40 outfile.write(memoryview(buf)[:l])
107 007f35b9df9c added support for copying to/using /dev/shm or /tmp Henry S. Thompson <ht@inf.ed.ac.uk> parents: 106 diff changeset	41 file=open(rfn,'rb',0)
111 3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	42 file.seek(offset)
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	43 bv=memoryview(buf)[:length]
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	44 nb=file.readinto(bv)
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	45 file.close()
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	46 if nb!=length:
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	47 print("losing",file.name,length,nb,file=sys.stderr)
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	48 if whole and options.zipped:
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	49 BINOUT.write(bv)
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	50 return
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	51 gzip_chunk = io.BytesIO(bv)
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	52 uv=memoryview(buf)[length:]
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	53 with igzip.IGzipFile(fileobj=gzip_chunk) as gzip_fin:
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	54 ll=0
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	55 while True:
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	56 l=gzip_fin.readinto(uv)
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	57 if not l:
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	58 break
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	59 ll+=l
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	60 cb=memoryview(uv)[:ll]
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	61 if whole:
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	62 BINOUT.write(cb)
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	63 return
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	64 # only parts wanted
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	65 state=0
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	66 tr=None
114 6467024cd072 all parts working, idempotency achieved Henry S. Thompson <ht@inf.ed.ac.uk> parents: 111 diff changeset	67 with io.BytesIO(cb) as clear_text:
111 3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	68 for L in clear_text:
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	69 if state==0:
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	70 # WARC header
114 6467024cd072 all parts working, idempotency achieved Henry S. Thompson <ht@inf.ed.ac.uk> parents: 111 diff changeset	71 if L.startswith(b"Content-Length: "):
111 3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	72 wl=int(L[16:].rstrip())
114 6467024cd072 all parts working, idempotency achieved Henry S. Thompson <ht@inf.ed.ac.uk> parents: 111 diff changeset	73 elif L.startswith(b"WARC-Truncated: "):
111 3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	74 tr=L[16:].rstrip()
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	75 tr="EMPTY" if tr=="" else tr
114 6467024cd072 all parts working, idempotency achieved Henry S. Thompson <ht@inf.ed.ac.uk> parents: 111 diff changeset	76 elif L=='' or L.startswith(b"\r"): # for idempotency
111 3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	77 if not (options.headers or options.body):
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	78 return
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	79 state=1
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	80 bl=None
114 6467024cd072 all parts working, idempotency achieved Henry S. Thompson <ht@inf.ed.ac.uk> parents: 111 diff changeset	81 # Note we preserve the empty line
111 3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	82 if options.warc:
114 6467024cd072 all parts working, idempotency achieved Henry S. Thompson <ht@inf.ed.ac.uk> parents: 111 diff changeset	83 BINOUT.write(L)
111 3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	84 continue
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	85 if state==1:
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	86 # HTTP header
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	87 wl -= len(L)
114 6467024cd072 all parts working, idempotency achieved Henry S. Thompson <ht@inf.ed.ac.uk> parents: 111 diff changeset	88 if L.startswith(b"Content-Length: "):
111 3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	89 bl=int(L[16:].rstrip())
114 6467024cd072 all parts working, idempotency achieved Henry S. Thompson <ht@inf.ed.ac.uk> parents: 111 diff changeset	90 elif L==b"" or L.startswith(b"\r"):
111 3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	91 if not options.body:
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	92 return
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	93 state=2
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	94 if bl is not None:
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	95 if bl!=wl:
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	96 print("length mismatch: %s %s %s here: %s given: %s trunc: %s"%\
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	97 (length,offset,filename,wl,bl,tr),file=sys.stderr)
114 6467024cd072 all parts working, idempotency achieved Henry S. Thompson <ht@inf.ed.ac.uk> parents: 111 diff changeset	98 # HTTP body
6467024cd072 all parts working, idempotency achieved Henry S. Thompson <ht@inf.ed.ac.uk> parents: 111 diff changeset	99 if options.body:
6467024cd072 all parts working, idempotency achieved Henry S. Thompson <ht@inf.ed.ac.uk> parents: 111 diff changeset	100 balance=clear_text.tell()
6467024cd072 all parts working, idempotency achieved Henry S. Thompson <ht@inf.ed.ac.uk> parents: 111 diff changeset	101 # Go this line with whatever is left in the buffer...
6467024cd072 all parts working, idempotency achieved Henry S. Thompson <ht@inf.ed.ac.uk> parents: 111 diff changeset	102 BINOUT.write(cb[balance-2:])
6467024cd072 all parts working, idempotency achieved Henry S. Thompson <ht@inf.ed.ac.uk> parents: 111 diff changeset	103 return
111 3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	104 if options.headers:
114 6467024cd072 all parts working, idempotency achieved Henry S. Thompson <ht@inf.ed.ac.uk> parents: 111 diff changeset	105 BINOUT.write(L)
100 f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	106
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	107 def main():
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	108 parser = argparse.ArgumentParser(
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	109 description='''Extract records from warc files given length, offset and file triples.
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	110 Input one triple on command line, or
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	111 triples from stdin as tab-delimited lines
105 baf56ff538f8 convert to rich directory structure per 2019-35 Henry S. Thompson <ht@inf.ed.ac.uk> parents: 104 diff changeset	112 or complete cdx index lines.
baf56ff538f8 convert to rich directory structure per 2019-35 Henry S. Thompson <ht@inf.ed.ac.uk> parents: 104 diff changeset	113 In all cases by 'filename' is meant crawlid/segmentid/filename''',
100 f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	114 epilog='''Note that if no output flag(s) is/are given,
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	115 the whole WARC record will be output, more efficiently than
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	116 would be the case if all three flags were given.''',
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	117 add_help=False,
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	118 conflict_handler='resolve',
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	119 formatter_class=HackFormat
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	120 )
97 2b880f2ce894 basic help format hacking works Henry S. Thompson <ht@inf.ed.ac.uk> parents: 94 diff changeset	121
100 f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	122 parser.add_argument('--help',help='Show help',action='help')
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	123 parser.add_argument('-d','--debug',help='Debug output',action='store_true')
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	124 parser.add_argument('-w','--warc',help='output WARC headers',
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	125 action='store_true')
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	126 parser.add_argument('-h','--headers',help='output HTTP headers',
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	127 action='store_true')
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	128 parser.add_argument('-b','--body',help='output HTTP body',
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	129 action='store_true')
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	130 parser.add_argument('-c','--cmd',help='pipes each result thru CMD')
107 007f35b9df9c added support for copying to/using /dev/shm or /tmp Henry S. Thompson <ht@inf.ed.ac.uk> parents: 106 diff changeset	131 parser.add_argument('-r','--root',nargs='?',
007f35b9df9c added support for copying to/using /dev/shm or /tmp Henry S. Thompson <ht@inf.ed.ac.uk> parents: 106 diff changeset	132 help='File path root, create a copy there if necessary',
007f35b9df9c added support for copying to/using /dev/shm or /tmp Henry S. Thompson <ht@inf.ed.ac.uk> parents: 106 diff changeset	133 default='/beegfs/common_crawl'),
108 9e5b117dc461 using Popen to run igzip (also not great) Henry S. Thompson <ht@inf.ed.ac.uk> parents: 107 diff changeset	134 parser.add_argument('-z','--zipped',
9e5b117dc461 using Popen to run igzip (also not great) Henry S. Thompson <ht@inf.ed.ac.uk> parents: 107 diff changeset	135 help="output raw gzipped record, ignored if any of -bhw supplied",
9e5b117dc461 using Popen to run igzip (also not great) Henry S. Thompson <ht@inf.ed.ac.uk> parents: 107 diff changeset	136 action='store_true')
100 f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	137 sg=parser.add_mutually_exclusive_group()
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	138 sg.add_argument('-x','--index',
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	139 help='take lines of triples from a cdx index file as input',
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	140 action='store_true')
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	141 sg.add_argument('length',type=int,
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	142 help='length in bytes of gzipped record',
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	143 nargs='?')
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	144 parser.add_argument('offset',type=int,
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	145 help='start position in bytes of gzipped record',
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	146 nargs='?')
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	147 parser.add_argument('filename',
105 baf56ff538f8 convert to rich directory structure per 2019-35 Henry S. Thompson <ht@inf.ed.ac.uk> parents: 104 diff changeset	148 help='pathname of gzipped Common Crawl WARC-format file',
baf56ff538f8 convert to rich directory structure per 2019-35 Henry S. Thompson <ht@inf.ed.ac.uk> parents: 104 diff changeset	149 nargs='?')
100 f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	150 # Hack the order of optional and positional in the help output
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	151 parser._action_groups.sort(key=lambda g:g.title)
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	152 #parser.print_help()
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	153 pa=parser.parse_args(sys.argv[1:])
106 815b33c3254a working with -x and rich directory structure Henry S. Thompson <ht@inf.ed.ac.uk> parents: 105 diff changeset	154 #print(pa,file=sys.stderr)
100 f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	155 if pa.length is not None:
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	156 # We have to enforce our own check..
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	157 if pa.offset is None or pa.filename is None:
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	158 parser.error("length, offset and filename must all be supplied together")
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	159
108 9e5b117dc461 using Popen to run igzip (also not great) Henry S. Thompson <ht@inf.ed.ac.uk> parents: 107 diff changeset	160 buf=bytearray(12810241024)
100 f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	161
104 61122560ae0c -x barely working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 100 diff changeset	162 whole=not (pa.warc or pa.headers or pa.body)
100 f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	163 if pa.length is not None:
107 007f35b9df9c added support for copying to/using /dev/shm or /tmp Henry S. Thompson <ht@inf.ed.ac.uk> parents: 106 diff changeset	164 process(pa,buf,pa.root,FPAT%list(pa.filename.split('/')),
007f35b9df9c added support for copying to/using /dev/shm or /tmp Henry S. Thompson <ht@inf.ed.ac.uk> parents: 106 diff changeset	165 pa.offset,pa.length,whole)
100 f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	166 exit(0)
104 61122560ae0c -x barely working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 100 diff changeset	167 if pa.index:
61122560ae0c -x barely working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 100 diff changeset	168 CDX=regex.compile('length": "([0-9])", "offset": "([0-9])", "filename": "crawl-data/([^/])/segments/([^/])/warc/(.*\.gz)"')
61122560ae0c -x barely working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 100 diff changeset	169 for l in sys.stdin:
61122560ae0c -x barely working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 100 diff changeset	170 m=CDX.search(l)
61122560ae0c -x barely working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 100 diff changeset	171 if m is None:
61122560ae0c -x barely working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 100 diff changeset	172 print("index line problem: \"%s\""%l.lstrip(),file=sys.stderr)
61122560ae0c -x barely working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 100 diff changeset	173 exit(2)
105 baf56ff538f8 convert to rich directory structure per 2019-35 Henry S. Thompson <ht@inf.ed.ac.uk> parents: 104 diff changeset	174 f=FPAT%(m[3:6])
107 007f35b9df9c added support for copying to/using /dev/shm or /tmp Henry S. Thompson <ht@inf.ed.ac.uk> parents: 106 diff changeset	175 process(pa,buf,pa.root,f,
007f35b9df9c added support for copying to/using /dev/shm or /tmp Henry S. Thompson <ht@inf.ed.ac.uk> parents: 106 diff changeset	176 int(m[2]),int(m[1]),whole)
104 61122560ae0c -x barely working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 100 diff changeset	177 exit(0)
100 f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	178 if __name__ == "__main__":
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	179 main()

Mercurial > hg > cc > cirrus_home

annotate bin/ix.py @ 114:6467024cd072