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main.py
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main.py
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from __future__ import absolute_import
from warcio.indexer import Indexer
from warcio.timeutils import iso_date_to_timestamp
from warcio.warcwriter import BufferWARCWriter
from warcio.archiveiterator import ArchiveIterator
from warcio.utils import open_or_default
from argparse import ArgumentParser, RawTextHelpFormatter
from cdxj_indexer.postquery import append_post_query
from io import BytesIO
from copy import copy
import json
import surt
import logging
import os
import re
import shutil
import sys
import tempfile
import zlib
# ============================================================================
class CDXJIndexer(Indexer):
field_names = {
"warc-target-uri": "url",
"http:status": "status",
"warc-payload-digest": "digest",
"req.http:referer": "referrer",
"req.http:method": "method",
}
inv_field_names = {k: v for v, k in field_names.items()}
DEFAULT_FIELDS = [
"warc-target-uri",
"mime",
"http:status",
"warc-payload-digest",
"length",
"offset",
"filename",
]
DEFAULT_RECORDS = ["response", "revisit", "resource", "metadata"]
ALLOWED_EXT = (".arc", ".arc.gz", ".warc", ".warc.gz")
RE_SPACE = re.compile(r'[;\s]')
def __init__(
self,
output,
inputs,
post_append=False,
sort=False,
compress=None,
lines=300,
data_out_name=None,
filename=None,
fields=None,
replace_fields=None,
records=None,
verify_http=False,
dir_root=None,
**kwargs
):
if isinstance(inputs, str) or hasattr(inputs, "read"):
inputs = [inputs]
inputs = iter_file_or_dir(inputs)
fields = self._parse_fields(fields, replace_fields)
super(CDXJIndexer, self).__init__(
fields, inputs, output, verify_http=verify_http
)
self.writer = None
self.curr_filename = None
self.force_filename = filename
self.post_append = post_append
self.dir_root = dir_root
self.num_lines = lines
self.sort = sort
self.compress = compress
self.data_out_name = data_out_name
self.include_records = records
if self.include_records == "all":
self.include_records = None
elif self.include_records:
self.include_records = self.include_records.split(",")
else:
self.include_records = self.DEFAULT_RECORDS
self.collect_records = self.post_append or any(
field.startswith("req.http:") for field in self.fields
)
self.record_parse = True
def _parse_fields(self, fields=None, replace_fields=None):
add_fields = replace_fields
if add_fields:
fields = []
else:
add_fields = fields
fields = copy(self.DEFAULT_FIELDS)
if add_fields:
add_fields = add_fields.split(",")
for field in add_fields:
fields.append(self.inv_field_names.get(field, field))
return fields
def get_field(self, record, name, it, filename):
if name == "mime":
if record.rec_type == "revisit":
return "warc/revisit"
elif record.rec_type in ("response", "request"):
name = "http:content-type"
else:
name = "content-type"
value = super(CDXJIndexer, self).get_field(record, name, it, filename)
if value:
value = self.RE_SPACE.split(value, 1)[0].strip()
return value
if name == "filename":
return self.curr_filename
if self.collect_records:
if name == "offset":
return str(record.file_offset)
elif name == "length":
return str(record.file_length)
elif name.startswith("req.http:"):
value = self._get_req_field(name, record)
if value:
return value
value = super(CDXJIndexer, self).get_field(record, name, it, filename)
if name == "warc-payload-digest":
value = self._get_digest(record, name)
return value
def _get_req_field(self, name, record):
if hasattr(record, "req"):
req = record.req
elif record.rec_type == "request":
req = record
else:
return None
if name == "req.http:method":
return req.http_headers.protocol
else:
return req.http_headers.get_header(name[9:])
def process_all(self):
data_out = None
with open_or_default(self.output, "wt", sys.stdout) as fh:
if self.compress:
if isinstance(self.compress, str):
data_out = open(self.compress, "wb")
if os.path.splitext(self.compress)[1] == "":
self.compress += ".cdxj.gz"
fh = CompressedWriter(
fh,
data_out=data_out,
data_out_name=self.compress,
num_lines=self.num_lines,
)
else:
fh = CompressedWriter(
fh,
data_out=self.compress,
data_out_name=self.data_out_name,
num_lines=self.num_lines,
)
if self.sort:
fh = SortingWriter(fh)
self.output = fh
super().process_all()
if self.sort or self.compress:
fh.flush()
if data_out:
data_out.close()
def _resolve_rel_path(self, filename):
if not self.dir_root:
return os.path.basename(filename)
path = os.path.relpath(filename, self.dir_root)
if os.path.sep != "/": # pragma: no cover
path = path.replace(os.path.sep, "/")
return path
def process_one(self, input_, output, filename):
self.curr_filename = self.force_filename or self._resolve_rel_path(filename)
it = self._create_record_iter(input_)
self._write_header(output, filename)
if self.collect_records:
wrap_it = self.req_resolving_iter(it)
else:
wrap_it = it
for record in wrap_it:
if not self.include_records or record.rec_type in self.include_records:
self.process_index_entry(it, record, filename, output)
def _get_digest(self, record, name):
value = record.rec_headers.get(name)
if not value:
if not self.writer:
self.writer = BufferWARCWriter()
self.writer.ensure_digest(record, block=False, payload=True)
value = record.rec_headers.get(name)
if value:
value = value.split(":")[-1]
return value
def _write_line(self, out, index, record, filename):
url = index.get("url")
if not url:
url = record.rec_headers.get("WARC-Target-URI")
dt = record.rec_headers.get("WARC-Date")
ts = iso_date_to_timestamp(dt)
if hasattr(record, "urlkey"):
urlkey = record.urlkey
else:
urlkey = self.get_url_key(url)
self._do_write(urlkey, ts, index, out)
def _do_write(self, urlkey, ts, index, out):
out.write(urlkey + " " + ts + " " + json.dumps(index) + "\n")
def get_url_key(self, url):
try:
return surt.surt(url)
except: # pragma: no coverage
return url
def _concur_req_resp(self, rec_1, rec_2):
if not rec_1 or not rec_2:
return None, None
if rec_1.rec_headers.get_header(
"WARC-Target-URI"
) != rec_2.rec_headers.get_header("WARC-Target-URI"):
return None, None
if rec_2.rec_headers.get_header(
"WARC-Concurrent-To"
) != rec_1.rec_headers.get_header("WARC-Record-ID"):
return None, None
if rec_1.rec_type == "response" and rec_2.rec_type == "request":
req = rec_2
resp = rec_1
elif rec_1.rec_type == "request" and rec_2.rec_type == "response":
req = rec_1
resp = rec_2
else:
return None, None
return req, resp
def read_content(self, record):
spool = tempfile.SpooledTemporaryFile()
shutil.copyfileobj(record.content_stream(), spool)
spool.seek(0)
record.buffered_stream = spool
#record.buffered_stream = BytesIO(record.content_stream().read())
def req_resolving_iter(self, record_iter):
prev_record = None
for record in record_iter:
#if record.rec_type == "request":
self.read_content(record)
record.file_offset = record_iter.get_record_offset()
record.file_length = record_iter.get_record_length()
req, resp = self._concur_req_resp(prev_record, record)
if not req or not resp:
if prev_record:
yield prev_record
prev_record.buffered_stream.close()
prev_record = record
continue
self._join_req_resp(req, resp)
yield prev_record
prev_record.buffered_stream.close()
yield record
record.buffered_stream.close()
prev_record = None
if prev_record:
yield prev_record
prev_record.buffered_stream.close()
def _join_req_resp(self, req, resp):
resp.req = req
method = req.http_headers.protocol
if self.post_append and method.upper() in ("POST", "PUT"):
post_url = append_post_query(req, resp)
resp.urlkey = self.get_url_key(post_url)
req.urlkey = resp.urlkey
# ============================================================================
class CDXLegacyIndexer(CDXJIndexer):
def _do_write(self, urlkey, ts, index, out):
index["urlkey"] = urlkey
index["timestamp"] = ts
line = " ".join(index.get(field, "-") for field in self.CDX_FIELDS)
out.write(line + "\n")
def _write_header(self, out, filename):
out.write(self.CDX_HEADER + "\n")
# ============================================================================
class CDX11Indexer(CDXLegacyIndexer):
CDX_HEADER = " CDX N b a m s k r M S V g"
CDX_FIELDS = [
"urlkey",
"timestamp",
"url",
"mime",
"status",
"digest",
"redirect",
"meta",
"length",
"offset",
"filename",
]
# ============================================================================
class CDX09Indexer(CDXLegacyIndexer):
CDX_HEADER = " CDX N b a m s k r V g"
CDX_FIELDS = [
"urlkey",
"timestamp",
"url",
"mime",
"status",
"digest",
"redirect",
"offset",
"filename",
]
# ============================================================================
class SortingWriter:
def __init__(self, out):
self.out = out
self.sortedlist = []
def write(self, line):
self.sortedlist.append(line)
def flush(self):
self.sortedlist.sort()
lastline = None
for line in self.sortedlist:
if lastline != line:
self.out.write(line)
lastline = line
self.out.flush()
# ============================================================================
class CompressedWriter:
def __init__(self, index_out, data_out, num_lines=300, data_out_name=""):
self.index_out = index_out
self.data_out = data_out
self.data_out_name = data_out_name
self.block = []
self.offset = 0
self.prefix = ""
self.num_lines = num_lines
def write_header(self):
meta = json.dumps({"format": "cdxj-gzip-1.0", "filename": self.data_out_name})
self.index_out.write("!meta 0 {0}\n".format(meta))
def write(self, line):
if not len(self.block):
self.prefix = line.split("{", 1)[0].strip()
if not self.offset:
self.write_header()
self.block.append(line)
if len(self.block) == self.num_lines:
self.flush()
def get_index_json(self, length):
data = {"offset": self.offset, "length": length}
return json.dumps(data) + "\n"
def flush(self):
comp = zlib.compressobj(wbits=16 + zlib.MAX_WBITS)
compressed = comp.compress("".join(self.block).encode("utf-8"))
compressed += comp.flush()
length = len(compressed)
line = self.prefix + " " + self.get_index_json(length)
self.index_out.write(line)
self.data_out.write(compressed)
self.offset += length
self.block = []
# ============================================================================
def main(args=None):
parser = ArgumentParser(
description="cdx_indexer", formatter_class=RawTextHelpFormatter
)
parser.add_argument("inputs", nargs="+")
parser.add_argument("-o", "--output")
group = parser.add_mutually_exclusive_group()
group.add_argument("-9", "--cdx09", action="store_true")
group.add_argument("-11", "--cdx11", action="store_true")
group.add_argument("-f", "--fields")
group.add_argument("-rf", "--replace-fields")
parser.add_argument("--records")
parser.add_argument("--dir-root")
parser.add_argument("-p", "--post-append", action="store_true")
parser.add_argument("-s", "--sort", action="store_true")
parser.add_argument("-c", "--compress")
parser.add_argument("-l", "--lines", type=int, default=300)
cmd = parser.parse_args(args=args)
write_cdx_index(cmd.output, cmd.inputs, vars(cmd))
def write_cdx_index(output, inputs, opts):
if opts.get("cdx11"):
cls = CDX11Indexer
elif opts.get("cdx09"):
cls = CDX09Indexer
else:
cls = CDXJIndexer
opts.pop("output", "")
opts.pop("inputs", "")
indexer = cls(output, inputs, **opts)
indexer.process_all()
return indexer
# =================================================================
def iter_file_or_dir(inputs, recursive=True):
for input_ in inputs:
if not isinstance(input_, str) or not os.path.isdir(input_):
yield input_
continue
for root, dirs, files in os.walk(input_):
for filename in files:
if filename.endswith(CDXJIndexer.ALLOWED_EXT):
full_path = os.path.join(root, filename)
yield full_path
# ============================================================================
if __name__ == "__main__": # pragma: no cover
main()