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#!/usr/bin/python

# mock-many-srpms:
# Build binary RPMS for the named source RPMs.
#
# 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
import tempfile
import shutil

def check_call_verbose(*args, **kwargs):
    print "Running: %r %r" % (args[0], kwargs)
    subprocess.check_call(*args, **kwargs)

def popen_verbose(*args, **kwargs):
    print "Running: %r" % (args[0], )
    return subprocess.Popen(*args, **kwargs)

def list_source_names_in_dir(dirpath):
    files = os.listdir(dirpath)
    sources = []
    for f in files:
        if not f.endswith('.src.rpm'):
            continue
        name = f.rsplit('-', 1)[0]
        sources.append(name)
    return sources

def delete_old_rpms_in_dir(dirpath):
    proc = popen_verbose(['repomanage', '-o', '.'], stdout=subprocess.PIPE,
                         stderr=sys.stderr,
                         cwd=dirpath)
    output = proc.communicate()[0]
    for line in output.split('\n'):
        if line.endswith('.rpm') and os.path.exists(line):
            os.unlink(line)

def main():
    try:
        opts, args = getopt.getopt(sys.argv[1:], '', ['root=', 'resultdir=', 'logdir=', 'delete-old',
                                                      'continue-on-fail', 'skip-have-build', 'save-temps'])
    except getopt.GetoptError, e:
        print unicode(e)
        print "Usage: mock-many-srpms --root=fedora-13-x86-64 --root=fedora-13-i386 --logdir=/path/to/logdir --resultdir=/path/to/repo rpm1 rpm2 ..."
        sys.exit(1)
        
    save_temps = False
    continue_on_fail = False
    skip_have_build = False
    delete_old = False
    resultdir = None
    logdir = None
    roots = []
    for o, a in opts:
        if o in ('--root', ):
            roots.append(a)
        elif o in ('--resultdir', ):
            resultdir = a
        elif o in ('--logdir', ):
            logdir = a
        elif o in ('--delete-old', ):
            delete_old = True
        elif o in ('--continue-on-fail'):
            continue_on_fail = True
        elif o in ('--skip-have-build'):
            skip_have_build = True
        elif o in ('--save-temps'):
            save_temps = True

    if len(roots) == 0:
        print "Must specify at least one --root"
        sys.exit(1)
    if logdir is None:
        print "Must specify --logdir=/path/to/logs"
        sys.exit(1)
    if resultdir is None:
        print "Must specify --resultdir=/path/to/repository"
        sys.exit(1)

    if len(args) == 0:
        print "No source RPMS specified."
        sys.exit(1)
 
    for arg in args:
        if not os.path.isfile(arg):
            print "Couldn't find source RPM '%r'" % (arg, )
            
    if not os.path.exists(resultdir):
        print "Creating initial empty repository in %r" % (resultdir, )
        os.makedirs(resultdir)
    check_call_verbose(['createrepo', '.'], cwd=resultdir)
        
    if not os.path.isdir(logdir):
        os.mkdir(logdir)

    tmpdir = tempfile.mkdtemp()
    tmp_mock_dir = os.path.join(tmpdir, 'mock')
    os.mkdir(tmp_mock_dir)
        
    for f in ('site-defaults.cfg', 'logging.ini'):
        path = os.path.join('/etc', 'mock', f)
        new_path = os.path.join(tmp_mock_dir, f)
        shutil.copy2(path, new_path)
        orig_stat = os.stat(path)
        os.utime(new_path, (orig_stat.st_atime, orig_stat.st_mtime))

    for root in roots:
        orig_config_path = os.path.join('/etc', 'mock', root + '.cfg')
        f_in = open(orig_config_path)
        new_mockroot_path = os.path.join(tmp_mock_dir, root + '.cfg')
        f_out = open(new_mockroot_path, 'w')
        for line in f_in:
            f_out.write(line)
        f_in.close()
        orig_stat = os.stat(orig_config_path)
        os.utime(new_mockroot_path, (orig_stat.st_atime, orig_stat.st_mtime))
        f_out.write('config_opts[\'yum.conf\'] += """[buildchain]\nname=buildchain\nbaseurl=file://%s\n"""' % (os.path.abspath(resultdir), ))
        f_out.close()

    if skip_have_build:
        previous_successful_builds = list_source_names_in_dir(resultdir)
    else:
        previous_successful_builds = []

    succeeded = []
    skipped = []
    failed = []
    for srpm in args:
        srpm_name = os.path.basename(srpm)
        src_name = srpm_name.rsplit('-', 1)[0]

        if src_name in previous_successful_builds:
            print "Skipping %r due to previous successful build" % (srpm_name, )
            skipped.append(srpm_name)
            continue

        mock_resultdir = os.path.join(logdir, srpm_name)
        if not os.path.isdir(mock_resultdir):
            os.makedirs(mock_resultdir)
                
        current_failed = False
        for root in roots:
            try:
                check_call_verbose(['mock', '--configdir=' + tmp_mock_dir, '-r', root, 
                                    '--resultdir=' + mock_resultdir, 'rebuild', srpm],
                                   stdout=sys.stdout, stderr=sys.stderr)
            except subprocess.CalledProcessError, e:
                current_failed = True

        if current_failed:
            print "FAILED: %r" % (srpm_name, )
            if continue_on_fail:
                failed.append(srpm_name)
                continue
            else:
                break
    
        succeeded.append(srpm_name)
        print "Successfully built %r" % (srpm_name, )    
        print "Updating repository in %r" % (resultdir, )
        linkname = os.path.join(resultdir, srpm_name)
        if not os.path.exists(linkname):
            os.link(srpm, linkname)
        for filename in os.listdir(mock_resultdir):
            if not filename.endswith('.rpm'):
                continue
            src = os.path.join(mock_resultdir, filename)
            linkname = os.path.join(resultdir, filename)
            if os.path.exists(linkname):
                continue
            os.link(src, linkname)
        check_call_verbose(['createrepo', '.'], cwd=resultdir)
        if delete_old:
            delete_old_rpms_in_dir(resultdir)
        
    if save_temps:
        print "Temporary files saved in %r" % (tmp_mock_dir, )
    else:
        shutil.rmtree(tmp_mock_dir)
    if len(skipped) > 0:
        print "The following builds were skipped due to a previous successful build:"
        for v in skipped:
            print "  %r" % (v, )
    if len(succeeded) > 0:
        print "The following builds were successful:"
        for v in succeeded:
            print "  %r" % (v, )
    if len(failed) > 0:
        print "The following builds failed:"
        for v in failed:
            print "  %r" % (v, )
    if len(failed) == 0:
        sys.exit(0)
    else:
        sys.exit(1)

if __name__ == '__main__':
    main()