diskimage-builder/diskimage_builder/elements/ironic-agent/cleanup.d/99-ramdisk-create
Ian Wienand 97c01e48ed Move elements & lib relative to diskimage_builder package
Currently we have all our elements and library files in a top-level
directory and install them into
<root>/share/diskimage-builder/[elements|lib] (where root is either /
or the root of a virtualenv).

The problem with this is that editable/development installs (pip -e)
do *not* install data_files.  Thus we have no canonical location to
look for elements -- leading to the various odd things we do such as a
whole bunch of guessing at the top of disk-image-create and having a
special test-loader in tests/test_elements.py so we can run python
unit tests on those elements that have it.

data_files is really the wrong thing to use for what are essentially
assets of the program.  data_files install works well for things like
config-files, init.d files or dropping documentation files.

By moving the elements under the diskimage_builder package, we always
know where they are relative to where we import from.  In fact,
pkg_resources has an api for this which we wrap in the new
diskimage_builder/paths.py helper [1].

We use this helper to find the correct path in the couple of places we
need to find the base-elements dir, and for the paths to import the
library shell functions.

Elements such as svc-map and pkg-map include python unit-tests, which
we do not need tests/test_elements.py to special-case load any more.
They just get found automatically by the normal subunit loader.

I have a follow-on change (I69ca3d26fede0506a6353c077c69f735c8d84d28)
to move disk-image-create to a regular python entry-point.

Unfortunately, this has to move to work with setuptools.  You'd think
a symlink under diskimage_builder/[elements|lib] would work, but it
doesn't.

[1] this API handles stuff like getting files out of .zip archive
modules, which we don't do.  Essentially for us it's returning
__file__.

Change-Id: I5e3e3c97f385b1a4ff2031a161a55b231895df5b
2016-11-01 17:27:41 -07:00

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#!/bin/bash
# dib-lint: disable=safe_sudo
if [ "${DIB_DEBUG_TRACE:-0}" -gt 0 ]; then
set -x
fi
set -eu
set -o pipefail
[ -n "$TARGET_ROOT" ]
USER=${USER:-$(whoami)}
source $_LIB/img-functions
IMAGE_PATH=$(readlink -f $IMAGE_NAME)
cd $TARGET_ROOT
echo "#disabled" > ./tmp/fstab.new
sudo mv ./tmp/fstab.new ./etc/fstab
sudo ln -s ./sbin/init ./
# Note: The pci.ids, which is used by lshw, locate on Ubuntu
# in /usr/share/misc. Therefore we are removing only the
# ./usr/share/misc/m* (will remove the magic and magic.mgc files).
# on RHEL pci.ids is locate on /usr/share/hwdata/pci.ids.
sudo find . -xdev \
-path './sys/*' -prune -o \
-path './tmp/*' -prune -o \
-path './boot/*' -prune -o \
-path './root/.cache' -prune -o \
-path './usr/include/*' -prune -o \
-path './usr/lib/locale/*' -prune -o \
-path './usr/share/doc/*' -prune -o \
-path './usr/share/man/*' -prune -o \
-path './usr/share/info/*' -prune -o \
-path './usr/share/licenses/*' -prune -o \
-path './usr/share/misc/m*' -prune -o \
-path './usr/src/kernels/*' -prune -o \
-path './var/cache/*' -prune -o \
-name '*.pyc' -prune -o \
-name '*.pyo' -prune -o \
-print | sudo cpio -o -H newc | gzip > ${IMAGE_PATH}.initramfs
select_boot_kernel_initrd $TARGET_ROOT
sudo cp $BOOTDIR/$KERNEL ${IMAGE_PATH}.kernel
sudo chown $USER: ${IMAGE_PATH}.kernel
# TODO(lucasagomes): Create a hard link for the .vmlinuz file to keep
# it backward compatible. Remove it after it has been consistent and
# documented in both places for at least one full OpenStack release cycle
echo "WARNING: The kernel extension .vmlinuz has been deprecated. Please rely on the file with the extension .kernel instead."
sudo rm -f ${IMAGE_PATH}.vmlinuz
ln ${IMAGE_PATH}.kernel ${IMAGE_PATH}.vmlinuz