cc/cirrus_home: bin/ix.py annotate

annotate bin/ix.py @ 120:d0b544e53dda

for use in processing CC index files

author	Henry S. Thompson <ht@inf.ed.ac.uk>
date	Mon, 28 Jun 2021 14:01:41 +0000
parents	bc958b776fb8
children	5b0ec642ee9b

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
119 bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	11 import sys, argparse, regex, os, shutil, io, gzip, time, shlex
110 f148c2366faa back to IGzipFile Henry S. Thompson <ht@inf.ed.ac.uk> parents: 109 diff changeset	12 from isal import igzip
119 bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 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
119 bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	27 def process(options,buf,filename,offset,length,whole):
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	28 global CMD_PROC, BINOUT
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	29 if options.cmd:
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	30 CMD_PROC=Popen(shlex.split(options.cmd),stdin=PIPE,bufsize=0)
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	31 BINOUT=CMD_PROC.stdin
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	32 process1(options,buf,filename,offset,length,whole)
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	33 if options.cmd:
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	34 # Wind up subproc
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	35 BINOUT.close()
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	36 if CMD_PROC.wait()!=0: # could/should be async?
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	37 print("subproc of %s:%s:%s failed with %s"%(length,offset,filename,
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	38 CMD_PROC.returncode),
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	39 file=sys.stderr)
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	40
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	41 def _output_stdout(buf):
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	42 BINOUT.write(buf)
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	43
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	44 def _output_subproc(buf):
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	45 toWrite=len(buf)
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	46 while toWrite>0:
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	47 toWrite -= BINOUT.write(buf)
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	48
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	49 def process1(options,buf,filename,offset,length,whole):
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	50 root=options.root
107 007f35b9df9c added support for copying to/using /dev/shm or /tmp Henry S. Thompson <ht@inf.ed.ac.uk> parents: 106 diff changeset	51 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	52 if root!="/beegfs/common_crawl":
117 63898fde9751 refactor final processing loop, Henry S. Thompson <ht@inf.ed.ac.uk> parents: 114 diff changeset	53 # Support using ramdisk or other local disk as a faster cached
107 007f35b9df9c added support for copying to/using /dev/shm or /tmp Henry S. Thompson <ht@inf.ed.ac.uk> parents: 106 diff changeset	54 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	55 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	56 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	57 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	58 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	59 #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	60 while True:
9e5b117dc461 using Popen to run igzip (also not great) Henry S. Thompson <ht@inf.ed.ac.uk> parents: 107 diff changeset	61 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	62 if l==0:
9e5b117dc461 using Popen to run igzip (also not great) Henry S. Thompson <ht@inf.ed.ac.uk> parents: 107 diff changeset	63 break
9e5b117dc461 using Popen to run igzip (also not great) Henry S. Thompson <ht@inf.ed.ac.uk> parents: 107 diff changeset	64 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	65 file=open(rfn,'rb',0)
111 3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	66 file.seek(offset)
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	67 bv=memoryview(buf)[:length]
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	68 nb=file.readinto(bv)
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	69 file.close()
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	70 if nb!=length:
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	71 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	72 if whole and options.zipped:
119 bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	73 _output(bv)
111 3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	74 return
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	75 gzip_chunk = io.BytesIO(bv)
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	76 uv=memoryview(buf)[length:]
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	77 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	78 ll=0
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	79 while True:
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	80 l=gzip_fin.readinto(uv)
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	81 if not l:
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	82 break
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	83 ll+=l
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	84 cb=memoryview(uv)[:ll]
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	85 if whole:
119 bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	86 _output(cb)
111 3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	87 return
117 63898fde9751 refactor final processing loop, Henry S. Thompson <ht@inf.ed.ac.uk> parents: 114 diff changeset	88 # Only output parts (0 = WARC header, 1 = HTTP header, 2 = body) that are wanted
111 3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	89 state=0
117 63898fde9751 refactor final processing loop, Henry S. Thompson <ht@inf.ed.ac.uk> parents: 114 diff changeset	90 tr=None # Was this record truncated?
63898fde9751 refactor final processing loop, Henry S. Thompson <ht@inf.ed.ac.uk> parents: 114 diff changeset	91 bl=None # for HTTP Content-Length for the length of the body?
114 6467024cd072 all parts working, idempotency achieved Henry S. Thompson <ht@inf.ed.ac.uk> parents: 111 diff changeset	92 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	93 for L in clear_text:
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	94 if state==0:
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	95 # WARC header
114 6467024cd072 all parts working, idempotency achieved Henry S. Thompson <ht@inf.ed.ac.uk> parents: 111 diff changeset	96 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	97 wl=int(L[16:].rstrip())
114 6467024cd072 all parts working, idempotency achieved Henry S. Thompson <ht@inf.ed.ac.uk> parents: 111 diff changeset	98 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	99 tr=L[16:].rstrip()
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	100 tr="EMPTY" if tr=="" else tr
117 63898fde9751 refactor final processing loop, Henry S. Thompson <ht@inf.ed.ac.uk> parents: 114 diff changeset	101 elif L==b"" or L.startswith(b"\r"): # for idempotency
63898fde9751 refactor final processing loop, Henry S. Thompson <ht@inf.ed.ac.uk> parents: 114 diff changeset	102 # Blank line, WARC header is finished
111 3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	103 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	104 return
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	105 state=1
114 6467024cd072 all parts working, idempotency achieved Henry S. Thompson <ht@inf.ed.ac.uk> parents: 111 diff changeset	106 # 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	107 if options.warc:
119 bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	108 _output(L)
111 3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	109 continue
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	110 if state==1:
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	111 # HTTP header
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	112 wl -= len(L)
117 63898fde9751 refactor final processing loop, Henry S. Thompson <ht@inf.ed.ac.uk> parents: 114 diff changeset	113 if not (L==b"" or L.startswith(b"\r")):
63898fde9751 refactor final processing loop, Henry S. Thompson <ht@inf.ed.ac.uk> parents: 114 diff changeset	114 # Non-blank, it's a header
63898fde9751 refactor final processing loop, Henry S. Thompson <ht@inf.ed.ac.uk> parents: 114 diff changeset	115 if bl is None and L.startswith(b"Content-Length: "):
63898fde9751 refactor final processing loop, Henry S. Thompson <ht@inf.ed.ac.uk> parents: 114 diff changeset	116 bl=int(L[16:].rstrip())
63898fde9751 refactor final processing loop, Henry S. Thompson <ht@inf.ed.ac.uk> parents: 114 diff changeset	117 if options.headers:
119 bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	118 _output(L)
117 63898fde9751 refactor final processing loop, Henry S. Thompson <ht@inf.ed.ac.uk> parents: 114 diff changeset	119 else:
63898fde9751 refactor final processing loop, Henry S. Thompson <ht@inf.ed.ac.uk> parents: 114 diff changeset	120 # Blank line, HTTP header is finished
111 3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	121 if not options.body:
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	122 return
117 63898fde9751 refactor final processing loop, Henry S. Thompson <ht@inf.ed.ac.uk> parents: 114 diff changeset	123 if options.headers:
119 bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	124 _output(L)
111 3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	125 state=2
117 63898fde9751 refactor final processing loop, Henry S. Thompson <ht@inf.ed.ac.uk> parents: 114 diff changeset	126 # The above is just for sanity, because we do _not_
63898fde9751 refactor final processing loop, Henry S. Thompson <ht@inf.ed.ac.uk> parents: 114 diff changeset	127 # continue with the outer loop,
63898fde9751 refactor final processing loop, Henry S. Thompson <ht@inf.ed.ac.uk> parents: 114 diff changeset	128 # since we can now block-output the entire rest of the
63898fde9751 refactor final processing loop, Henry S. Thompson <ht@inf.ed.ac.uk> parents: 114 diff changeset	129 # input buffer.
111 3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	130 if bl is not None:
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	131 if bl!=wl:
3119bca71181 warc and headers parts working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 110 diff changeset	132 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	133 (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	134 # HTTP body
117 63898fde9751 refactor final processing loop, Henry S. Thompson <ht@inf.ed.ac.uk> parents: 114 diff changeset	135 balance=clear_text.tell()
63898fde9751 refactor final processing loop, Henry S. Thompson <ht@inf.ed.ac.uk> parents: 114 diff changeset	136 #print(balance,bl,wl,ll,ll-balance,file=sys.stderr)
63898fde9751 refactor final processing loop, Henry S. Thompson <ht@inf.ed.ac.uk> parents: 114 diff changeset	137 # Output whatever is left
119 bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	138 _output(cb[balance:balance+wl])
114 6467024cd072 all parts working, idempotency achieved Henry S. Thompson <ht@inf.ed.ac.uk> parents: 111 diff changeset	139 return
100 f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	140
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	141 def main():
119 bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	142 global _output
100 f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	143 parser = argparse.ArgumentParser(
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	144 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	145 Input one triple on command line, or
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	146 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	147 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	148 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	149 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	150 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	151 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	152 add_help=False,
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	153 conflict_handler='resolve',
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	154 formatter_class=HackFormat
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	155 )
97 2b880f2ce894 basic help format hacking works Henry S. Thompson <ht@inf.ed.ac.uk> parents: 94 diff changeset	156
100 f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	157 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	158 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	159 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	160 action='store_true')
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	161 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	162 action='store_true')
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	163 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	164 action='store_true')
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	165 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	166 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	167 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	168 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	169 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	170 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	171 action='store_true')
100 f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	172 sg=parser.add_mutually_exclusive_group()
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	173 sg.add_argument('-x','--index',
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	174 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	175 action='store_true')
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	176 sg.add_argument('length',type=int,
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	177 help='length in bytes of gzipped record',
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	178 nargs='?')
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	179 parser.add_argument('offset',type=int,
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	180 help='start position in bytes of gzipped record',
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	181 nargs='?')
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	182 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	183 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	184 nargs='?')
100 f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	185 # 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	186 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	187 #parser.print_help()
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	188 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	189 #print(pa,file=sys.stderr)
100 f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	190 if pa.length is not None:
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	191 # We have to enforce our own check..
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	192 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	193 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	194
108 9e5b117dc461 using Popen to run igzip (also not great) Henry S. Thompson <ht@inf.ed.ac.uk> parents: 107 diff changeset	195 buf=bytearray(12810241024)
100 f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	196
104 61122560ae0c -x barely working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 100 diff changeset	197 whole=not (pa.warc or pa.headers or pa.body)
119 bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	198 if pa.cmd:
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	199 _output = _output_subproc
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	200 else:
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	201 _output = _output_stdout
104 61122560ae0c -x barely working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 100 diff changeset	202 if pa.index:
61122560ae0c -x barely working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 100 diff changeset	203 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	204 for l in sys.stdin:
61122560ae0c -x barely working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 100 diff changeset	205 m=CDX.search(l)
61122560ae0c -x barely working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 100 diff changeset	206 if m is None:
61122560ae0c -x barely working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 100 diff changeset	207 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	208 exit(2)
105 baf56ff538f8 convert to rich directory structure per 2019-35 Henry S. Thompson <ht@inf.ed.ac.uk> parents: 104 diff changeset	209 f=FPAT%(m[3:6])
119 bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	210 process(pa,buf,f,
107 007f35b9df9c added support for copying to/using /dev/shm or /tmp Henry S. Thompson <ht@inf.ed.ac.uk> parents: 106 diff changeset	211 int(m[2]),int(m[1]),whole)
119 bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	212 elif pa.length is not None:
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	213 print(pa.filename,file=sys.stderr)
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	214 process(pa,buf,FPAT%tuple(pa.filename.split('/')),
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	215 pa.offset,pa.length,whole)
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	216 else:
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	217 print("Reading length, offset, filename tab-delimited triples from stdin...",
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	218 file=sys.stderr)
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	219 for l in sys.stdin:
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	220 try:
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	221 (length,offset,filename)=l.rstrip().split('\t')
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	222 length=int(length)
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	223 offset=int(offset)
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	224 except ValueError as e:
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	225 parser.error('Invalid input line: %s\n "%s"'%(e,l))
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	226 process(pa,buf,FPAT%tuple(filename.split('/')),
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	227 offset,length,whole)
bc958b776fb8 implement --cmd Henry S. Thompson <ht@inf.ed.ac.uk> parents: 117 diff changeset	228
100 f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	229 if __name__ == "__main__":
f7623dbd8eb5 bare minimum working Henry S. Thompson <ht@inf.ed.ac.uk> parents: 99 diff changeset	230 main()

Mercurial > hg > cc > cirrus_home

annotate bin/ix.py @ 120:d0b544e53dda