devstack/lib/infra
Ian Wienand 523f488036 Namespace XTRACE commands
I noticed this when debugging some grenade issues failures.

An include of grenade/functions stores the current value of XTRACE
(on) and disables xtrace for the rest of the import.

We then include devstack's "functions" library, which now overwrites
the stored value of XTRACE the current state; i.e. disabled.

When it finishes it restores the prior state (disabled), and then
grenade restores the same value of XTRACE (disabled).

The result is that xtrace is incorrectly disabled until the next time
it just happens to be turned on.

The solution is to name-space the store of the current-value of xtrace
so when we finish sourcing a file, we always restore the tracing value
to what it was when we entered.

Some files had already discovered this.  In general there is
inconsistency around the setting of the variable, and a lot of obvious
copy-paste.  This brings consistency across all files by using
_XTRACE_* prefixes for the sotre/restore of tracing values.

Change-Id: Iba7739eada5711d9c269cb4127fa712e9f961695
2015-11-27 15:36:04 +11:00

59 lines
1.3 KiB
Bash

#!/bin/bash
#
# lib/infra
#
# Functions to install infrastructure projects needed by other projects
# early in the cycle. We need this so we can do things like gate on
# requirements as a global list
# Dependencies:
#
# - ``functions`` file
# ``stack.sh`` calls the entry points in this order:
#
# - install_infra
# Save trace setting
_XTRACE_INFRA=$(set +o | grep xtrace)
set +o xtrace
# Defaults
# --------
GITDIR["pbr"]=$DEST/pbr
# Entry Points
# ------------
# install_infra() - Collect source and prepare
function install_infra {
local PIP_VIRTUAL_ENV="$REQUIREMENTS_DIR/.venv"
[ ! -d $PIP_VIRTUAL_ENV ] && virtualenv $PIP_VIRTUAL_ENV
# We don't care about testing git pbr in the requirements venv.
PIP_VIRTUAL_ENV=$PIP_VIRTUAL_ENV pip_install -U pbr
PIP_VIRTUAL_ENV=$PIP_VIRTUAL_ENV pip_install $REQUIREMENTS_DIR
# Unset the PIP_VIRTUAL_ENV so that PBR does not end up trapped
# down the VENV well
unset PIP_VIRTUAL_ENV
# Install pbr
if use_library_from_git "pbr"; then
git_clone_by_name "pbr"
setup_dev_lib "pbr"
else
# Always upgrade pbr to latest version as we may have pulled it
# in via system packages.
pip_install "-U" "pbr"
fi
}
# Restore xtrace
$_XTRACE_INFRA
# Tell emacs to use shell-script-mode
## Local variables:
## mode: shell-script
## End: