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Merge pull request #4762

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399cdbc contrib/linearize: Add feature to set file's timestamp based on block header time. (Jeff Garzik)
8f5a423 contrib/linearize: split block files based on year-month, not just year (Jeff Garzik)
75400a2 contrib/linearize: Guarantee that output is generated in-order (Jeff Garzik)
This commit is contained in:
Wladimir J. van der Laan 2014-09-04 15:19:55 +02:00
commit d800dcc32a
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GPG Key ID: 74810B012346C9A6
2 changed files with 52 additions and 26 deletions
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5
contrib/linearize/README.md
View File

@ -27,6 +27,7 @@ output.
Optional config file setting for linearize-data:
* "netmagic": network magic number
* "max_out_sz": maximum output file size (default 1000*1000*1000)
* "split_year": Split files when a new year is first seen, in addition to
* "split_timestamp": Split files when a new month is first seen, in addition to
reaching a maximum file size.
* "file_timestamp": Set each file's last-modified time to that of the
most recent block in that file.

73
contrib/linearize/linearize-data.py
View File

@ -10,11 +10,13 @@
import json
import struct
import re
import os
import base64
import httplib
import sys
import hashlib
import datetime
import time
settings = {}
@ -58,10 +60,12 @@ def calc_hash_str(blk_hdr):
hash_str = hash.encode('hex')
return hash_str
def get_blk_year(blk_hdr):
def get_blk_dt(blk_hdr):
members = struct.unpack("<I", blk_hdr[68:68+4])
dt = datetime.datetime.fromtimestamp(members[0])
return dt.year
nTime = members[0]
dt = datetime.datetime.fromtimestamp(nTime)
dt_ym = datetime.datetime(dt.year, dt.month, 1)
return (dt_ym, nTime)
def get_block_hashes(settings):
blkindex = []
@ -86,16 +90,21 @@ def copydata(settings, blkindex, blkset):
outFn = 0
outsz = 0
outF = None
outFname = None
blkCount = 0
lastYear = 0
splitYear = False
lastDate = datetime.datetime(2000, 1, 1)
highTS = 1408893517 - 315360000
timestampSplit = False
fileOutput = True
setFileTime = False
maxOutSz = settings['max_out_sz']
if 'output' in settings:
fileOutput = False
if settings['split_year'] != 0:
splitYear = True
if settings['file_timestamp'] != 0:
setFileTime = True
if settings['split_timestamp'] != 0:
timestampSplit = True
while True:
if not inF:
@ -125,36 +134,49 @@ def copydata(settings, blkindex, blkset):
print("Skipping unknown block " + hash_str)
continue
if blkindex[blkCount] != hash_str:
print("Out of order block.")
print("Expected " + blkindex[blkCount])
print("Got " + hash_str)
sys.exit(1)
if not fileOutput and ((outsz + inLen) > maxOutSz):
outF.close()
if setFileTime:
os.utime(outFname, (int(time.time()), highTS))
outF = None
outFname = None
outFn = outFn + 1
outsz = 0
if splitYear:
blkYear = get_blk_year(blk_hdr)
if blkYear > lastYear:
print("New year " + str(blkYear) + " @ " + hash_str)
lastYear = blkYear
if outF:
outF.close()
outF = None
outFn = outFn + 1
outsz = 0
(blkDate, blkTS) = get_blk_dt(blk_hdr)
if timestampSplit and (blkDate > lastDate):
print("New month " + blkDate.strftime("%Y-%m") + " @ " + hash_str)
lastDate = blkDate
if outF:
outF.close()
if setFileTime:
os.utime(outFname, (int(time.time()), highTS))
outF = None
outFname = None
outFn = outFn + 1
outsz = 0
if not outF:
if fileOutput:
fname = settings['output_file']
outFname = settings['output_file']
else:
fname = "%s/blk%05d.dat" % (settings['output'], outFn)
print("Output file" + fname)
outF = open(fname, "wb")
outFname = "%s/blk%05d.dat" % (settings['output'], outFn)
print("Output file" + outFname)
outF = open(outFname, "wb")
outF.write(inhdr)
outF.write(rawblock)
outsz = outsz + inLen + 8
blkCount = blkCount + 1
if blkTS > highTS:
highTS = blkTS
if (blkCount % 1000) == 0:
print("Wrote " + str(blkCount) + " blocks")
@ -184,13 +206,16 @@ if __name__ == '__main__':
settings['input'] = 'input'
if 'hashlist' not in settings:
settings['hashlist'] = 'hashlist.txt'
if 'split_year' not in settings:
settings['split_year'] = 0
if 'file_timestamp' not in settings:
settings['file_timestamp'] = 0
if 'split_timestamp' not in settings:
settings['split_timestamp'] = 0
if 'max_out_sz' not in settings:
settings['max_out_sz'] = 1000L * 1000 * 1000
settings['max_out_sz'] = long(settings['max_out_sz'])
settings['split_year'] = int(settings['split_year'])
settings['split_timestamp'] = int(settings['split_timestamp'])
settings['file_timestamp'] = int(settings['file_timestamp'])
settings['netmagic'] = settings['netmagic'].decode('hex')
if 'output_file' not in settings and 'output' not in settings: