diskimage-builder/elements/package-installs/bin/package-installs-v2
Ian Wienand fb942b752d Use strings in package-installs follow output
I noticed in debugging that with python3 all the pkg-installs output
is preceeded by a b'foo', which suggests coding issues lurking.

The universal_newlines argument makes subprocess readline() returns a
decoded str (via locale) instead of a byte-string.  This clears up a
couple of points where we explicitly decode and cleans up the print
output.

Minor formatting cleanup of command and exit display.  Don't strip the
leading spaces so indents retain in the output

Change-Id: I2894f10a0c2fc618563641b9d106b716f4a544aa
2017-01-18 19:26:40 +11:00

118 lines
3.7 KiB
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Executable file

#!/usr/local/bin/dib-python
# Copyright 2014 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from __future__ import print_function
import argparse
import json
import subprocess
import sys
# run a command, return output
# if follow is set, output will be echoed to stdout
def process_output(cmdline, follow=False):
proc = subprocess.Popen(cmdline, stdout=subprocess.PIPE,
universal_newlines=True)
if follow:
print("Running command: %s" % cmdline)
out = ""
with proc.stdout:
for line in iter(proc.stdout.readline, ''):
out += line
print("> %s" % line, end="")
proc.wait()
print("returncode: %d" % proc.returncode)
else:
out = proc.communicate()[0]
if proc.returncode:
e = subprocess.CalledProcessError(proc.returncode, cmdline)
e.output = out
raise e
return out
def main():
parser = argparse.ArgumentParser(
description="Install or uninstall packages for a specific phase based"
" on package-installs files.")
parser.add_argument('--phase', required=True,
help="Install phase to filter on. Valid options are"
" 'install.d' or pre-install.d")
parser.add_argument('--uninstall', action="store_true",
help="Only show packages to uninstall. By default only"
" packages to install are shown")
parser.add_argument('-n', '--noop', action="store_true",
help="Don't actually install, just print the command")
parser.add_argument('infile', help="File to process")
args = parser.parse_args()
packages = json.load(open(args.infile))
if args.uninstall:
install = "uninstall"
else:
install = "install"
pkgs = list()
if args.phase in packages and install in packages[args.phase]:
install_packages = packages[args.phase][install]
else:
print("Nothing to %s" % install)
sys.exit(0)
for (pkg, element) in install_packages:
print("%sing %s from %s" % (install, pkg, element))
pkg_map_args = ['pkg-map', '--missing-ok', '--element', element, pkg]
try:
map_output = process_output(pkg_map_args)
pkgs.extend(map_output.strip().split('\n'))
except subprocess.CalledProcessError as e:
if e.returncode == 1:
if args.noop:
pkgs.append(pkg)
continue
else:
print("pkg-map failed")
sys.exit(1)
elif e.returncode == 2:
pkgs.append(pkg)
continue
install_args = ["install-packages"]
if args.uninstall:
install_args.append("-e")
install_args.extend(list(set(pkgs)))
if args.noop:
print(" ".join(install_args))
else:
try:
process_output(install_args, follow=True)
except subprocess.CalledProcessError as e:
print("install failed with error %s" % e.output)
sys.exit(1)
if __name__ == '__main__':
main()
# Tell emacs to use python-mode
# Local variables:
# mode: python
# End: