diskimage-builder/elements/apt-preferences/extra-data.d/99-set-apt-package-pins
Ian Wienand 36b59c001c Standarise tracing for scripts
There is a wide variety of tracing options through the various shell
scripts.  Some use "set -eux", others explicity set xtrace and others
do nothing.  There is a "-x" option to bin/disk-image-create but it
doesn't flow down to the many scripts it calls.

This adds a global integer variable set by disk-image-create
DIB_DEBUG_TRACE.  All scripts have a stanza added to detect this and
turn on tracing.  Any other tracing methods are rolled into this.  So
the standard header is

---
if [ "${DIB_DEBUG_TRACE:-0}" -gt 0 ]; then
    set -x
fi
set -eu
set -o pipefail
---

Multiple -x options can be specified to dib-create-image, which
increases the value of DIB_DEBUG_TRACE.  If script authors feel their
script should only trace at higher levels, they should modify the
"-gt" value.  If they feel it should trace by default, they can modify
the default value also.

Changes to pachset 16 : scripts which currently trace themselves by
default have retained this behaviour with DIB_DEBUG_TRACE defaulting
to "1".  This was done by running [1] on patch set 15.  See the thread
beginning at [2]

dib-lint is also updated to look for the variable being matched.

[1] https://gist.github.com/ianw/71bbda9e6acc74ccd0fd
[2] http://lists.openstack.org/pipermail/openstack-dev/2014-November/051575.html

Change-Id: I6c5a962260741dcf6f89da9a33b96372a719b7b0
2015-02-12 10:41:32 +11:00

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#!/bin/bash
#
# 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.
if [ ${DIB_DEBUG_TRACE:-0} -gt 0 ]; then
set -x
fi
set -eu
set -o pipefail
# exit directly if DIB_DPKG_MANIFEST is not defined properly
if [ -z "$DIB_DPKG_MANIFEST" ]; then
echo "DIB_DPKG_MANIFEST must be set to the location of a manifest file you wish to use"
exit 0
elif [ ! -f "$DIB_DPKG_MANIFEST" -o ! -s "$DIB_DPKG_MANIFEST" ]; then
echo "$DIB_DPKG_MANIFEST is not a valid manifest file."
echo "You should assign a proper manifest file in DIB_DPKG_MANIFEST"
exit 1
fi
DIB_DPKG_MANIFEST=$(readlink -f $DIB_DPKG_MANIFEST)
# Create the preferences file from the given manifest
outfile=$(mktemp)
for package in $(jq -r ".packages[].package" $DIB_DPKG_MANIFEST); do
version=$(jq -r ".packages[] | select(.package == \"${package}\") |\
.version" $DIB_DPKG_MANIFEST)
cat << EOF >> $outfile
Package: ${package}
Pin: version ${version}
Pin-Priority: 1001
EOF
done
if [ -s $outfile ]; then
sudo mv $outfile $TMP_MOUNT_PATH/etc/apt/preferences
else
rm $outfile
fi