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#!/usr/bin/python

# fedpkg-pull-build-chain:
# Build binary RPMS for the named source RPMs from the latest upstream code.  Fedora CVS tree
# is checked out into the current directory.  Build logs go in _build.  You must specify
# a destination path for RPMS with --resultdir.
#
# Licensed under the new-BSD license (http://www.opensource.org/licenses/bsd-license.php)
# Copyright (C) 2010 Red Hat, Inc.
# Written by Colin Walters <walters@verbum.org>

import getopt
import os
import sys
import subprocess

def main():
    try:
        opts, args = getopt.getopt(sys.argv[1:], '', ['release', 'arch'])
    except getopt.GetoptError, e:
        print "Usage: fedpkg-pull-build-chain --release=F-12 --resultdir=/path/to/repo rpm1 rpm2 ..."
        sys.exit(1)
        
    release = None
    resultdir = None
    architectures = []
    for o, a in opts:
        if o in ('--release', ):
            release = a
        elif o in ('--arch', ):
            architectures.append(a)
        elif o in ('--resultdir', ):
            resultdir = a
            
    if release is None:
        print "Must specify --release"
        sys.exit(1)
    if resultdir is None:
        print "Must specify --resultdir=/path/to/repository"
        sys.exit(1)
            
    if len(architectures) == 0:
        architectures.append(subprocess.check_call(['uname', '-m'], stdout=subprocess.PIPE).communicate()[0])
       
    failed = []
    for arg in args:
        if not os.path.isdir(arg):
            print "Checking out %r from fedora-cvs" % (arg, )
            subprocess.check_call(['fedora-cvs', arg], stdout=sys.stdout, stderr=sys.stderr)
        release_dir = os.path.join(arg, release)
        for filename in os.listdir(release_dir):
            fpath = os.path.join(release_dir, filename)
            if filename.endswith('.src.rpm'):
                print "Deleting old srpm: " + fpath
                os.unlink(fpath)
        print "Running fedpkg-make-pull"
        try:
            subprocess.check_call(['fedpkg-make-pull'], stdout=sys.stdout, stderr=sys.stderr)
        except subprocess.CalledProcessError, e:
            print "Failed: " + unicode(e)
            failed.append(arg)
            continue
        
        srpm = None
        for filename in os.listdir(release_dir):
            fpath = os.path.join(release_dir, filename)
            if filename.endswith('.src.rpm'):
                srpm = fpath
        if srpm is None:
            print "No SRPM, assuming no changes upstream"
            continue

        mock_resultdir = os.path.join('_build', arg)
        try:
            os.mkdir(mock_resultdir)
        except OSError, e:
            # assume EEXIST, and clean out old results
            for filename in os.listdir(mock_resultdir):
                os.unlink(os.path.join(mock_resultdir, filename))
        
        for architecture in architectures:
            # FIXME do this better
            mockrelease = 'fedora-' + release[2:].lower() + '-' + architecture
            try:
                subprocess.check_call(['mock', '-r', mockrelease, '--resultdir=' + mock_resultdir, 'rebuild', srpm], stdout=sys.stdout, stderr=sys.stderr)
            except subprocess.CalledProcessError, e:
                print "Failed: " + unicode(e)
                failed.append(arg)
                continue
        
        for filename in os.listdir(mock_resultdir):
            if not filename.endswith('.rpm'):
                continue
            os.link(os.path.join(resultdir, filename), os.path.join(mock_resultdir, filename))
            
    if len(failed) > 0:
        sys.exit(1)
    else:
        sys.exit(0)

if __name__ == '__main__':
    main()