From 542e5b592a41c88205795d3a6de3d6be6da1ff12 Mon Sep 17 00:00:00 2001
From: Tony Breeds <tony@bakeyournoodle.com>
Date: Tue, 13 Dec 2016 15:21:45 +1100
Subject: [PATCH] Add Constraints support

Adding constraints support to libraries is slightly more complex than
services as the libraries themselves are listed in upper-constraints.txt
which leads to errors that you can't install a specific version and a
constrained version.

This change adds constraints support by also adding a helper script to
edit the constraints to remove oslo.versionedobjects.

Change-Id: I003cdce359e5d79a73f0c3f274765ad1f50bf3a4
---
 tools/tox_install.sh | 30 ++++++++++++++++++++++++++++++
 tox.ini              |  7 ++++++-
 2 files changed, 36 insertions(+), 1 deletion(-)
 create mode 100755 tools/tox_install.sh

diff --git a/tools/tox_install.sh b/tools/tox_install.sh
new file mode 100755
index 00000000..43468e45
--- /dev/null
+++ b/tools/tox_install.sh
@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+
+# Client constraint file contains this client version pin that is in conflict
+# with installing the client from source. We should remove the version pin in
+# the constraints file before applying it for from-source installation.
+
+CONSTRAINTS_FILE=$1
+shift 1
+
+set -e
+
+# NOTE(tonyb): Place this in the tox enviroment's log dir so it will get
+# published to logs.openstack.org for easy debugging.
+localfile="$VIRTUAL_ENV/log/upper-constraints.txt"
+
+if [[ $CONSTRAINTS_FILE != http* ]]; then
+    CONSTRAINTS_FILE=file://$CONSTRAINTS_FILE
+fi
+# NOTE(tonyb): need to add curl to bindep.txt if the project supports bindep
+curl $CONSTRAINTS_FILE --insecure --progress-bar --output $localfile
+
+pip install -c$localfile openstack-requirements
+
+# This is the main purpose of the script: Allow local installation of
+# the current repo. It is listed in constraints file and thus any
+# install will be constrained and we need to unconstrain it.
+edit-constraints $localfile -- $CLIENT_NAME
+
+pip install -c$localfile -U $*
+exit $?
diff --git a/tox.ini b/tox.ini
index 9d00bb98..e07f5cf4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,8 +1,13 @@
 [tox]
-minversion = 1.6
+minversion = 2.0
 envlist = py35,py34,py27,pypy,pep8
 
 [testenv]
+setenv =
+    VIRTUAL_ENV={envdir}
+    BRANCH_NAME=master
+    CLIENT_NAME=oslo.versionedobjects
+install_command = {toxinidir}/tools/tox_install.sh {env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
 deps = .[fixtures]
        -r{toxinidir}/test-requirements.txt
 commands = python setup.py testr --slowest --testr-args='{posargs}'