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Paul Eggleton e58eb8cbb0 bitbake: bitbake-diffsigs: allow specifying task & follow deps recursively

Add the ability to compare the two most recent runs of a specified task,
and follow dependent hash changes recursively. This enables you to trace
back and find exactly why a task was re-run after the fact.

Note that this relies on the metadata providing a function, hooked in
as bb.siggen.find_siginfo, which allows searching in the appropriate
places to find signature data files.

(Bitbake rev: cc70181659c07e04c205e17832846acf1ff31d28)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2012-09-07 12:10:45 +01:00

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#!/usr/bin/env python

bitbake-diffsigs

BitBake task signature data comparison utility

Copyright (C) 2012 Intel Corporation

This program is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License version 2 as

published by the Free Software Foundation.

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License along

with this program; if not, write to the Free Software Foundation, Inc.,

51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

import os import sys import warnings import fnmatch import optparse import logging

sys.path.insert(0, os.path.join(os.path.dirname(os.path.dirname(sys.argv[0])), 'lib'))

import bb.tinfoil import bb.siggen

logger = logging.getLogger('BitBake')

def find_compare_task(bbhandler, pn, taskname): """ Find the most recent signature files for the specified PN/task and compare them """

if not hasattr(bb.siggen, 'find_siginfo'):
    logger.error('Metadata does not support finding signature data files')
    sys.exit(1)

filedates = bb.siggen.find_siginfo(pn, taskname, None, bbhandler.config_data)
latestfiles = sorted(filedates.keys(), key=lambda f: filedates[f])[-2:]
if not latestfiles:
    logger.error('No sigdata files found matching %s %s' % (pn, taskname))
    sys.exit(1)
elif len(latestfiles) < 2:
    logger.error('Only one matching sigdata file found for the specified task (%s %s)' % (pn, taskname))
    sys.exit(1)
else:
    # Define recursion callback
    def recursecb(key, hash1, hash2):
        hashes = [hash1, hash2]
        hashfiles = bb.siggen.find_siginfo(key, None, hashes, bbhandler.config_data)

        recout = []
        if len(hashfiles) == 2:
            out2 = bb.siggen.compare_sigfiles(hashfiles[hash1], hashfiles[hash2], recursecb)
            recout.extend(list('  ' + l for l in out2))
        else:
            recout.append("Unable to find matching sigdata for %s with hashes %s or %s" % (key, hash1, hash2))

        return recout

    # Recurse into signature comparison
    output = bb.siggen.compare_sigfiles(latestfiles[0], latestfiles[1], recursecb)
    if output:
        print '\n'.join(output)
sys.exit(0)

parser = optparse.OptionParser( usage = """ %prog -t recipename taskname %prog sigdatafile1 sigdatafile2 %prog sigdatafile1""")

parser.add_option("-t", "--task", help = "find the signature data files for last two runs of the specified task and compare them", action="store_true", dest="taskmode")

options, args = parser.parse_args(sys.argv)

if len(args) == 1: parser.print_help() else: tinfoil = bb.tinfoil.Tinfoil() if options.taskmode: if len(args) < 3: logger.error("Please specify a recipe and task name") sys.exit(1) tinfoil.prepare(config_only = True) find_compare_task(tinfoil, args[1], args[2]) else: if len(args) == 2: output = bb.siggen.dump_sigfile(sys.argv[1]) else: output = bb.siggen.compare_sigfiles(sys.argv[1], sys.argv[2])

    if output:
        print '\n'.join(output)

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