From 8faf0c45719e2014a5df137288aaa4b399e087f3 Mon Sep 17 00:00:00 2001
From: Dirk Mueller <dirk@dmllr.de>
Date: Sat, 3 Dec 2016 13:09:26 +0100
Subject: [PATCH] Add Constraints support

Adding constraints support to clients is slightly more complex than
services as the clients 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 pymod2pkg.

Change-Id: I05a2bcca4a240df1995de0627c8acd7ffbeb1893
---
 tools/tox_install.sh | 30 ++++++++++++++++++++++++++++++
 tox.ini              |  7 +++++--
 2 files changed, 35 insertions(+), 2 deletions(-)
 create mode 100755 tools/tox_install.sh

diff --git a/tools/tox_install.sh b/tools/tox_install.sh
new file mode 100755
index 0000000..43468e4
--- /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 6e3ef24..98ea96b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,15 +1,18 @@
 [tox]
 envlist = py34,py27,pypy,pep8
-minversion = 1.6
+minversion = 2.0
 skipsdist = True
 
 [testenv]
 usedevelop = True
-install_command = pip install -U {opts} {packages}
+install_command =
+    {toxinidir}/tools/tox_install.sh {env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
 setenv = VIRTUAL_ENV={envdir}
          OS_STDOUT_NOCAPTURE=False
          OS_STDERR_NOCAPTURE=False
          PYTHONHASHSEED=0
+         BRANCH_NAME=master
+         CLIENT_NAME=pymod2pkg
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 commands = python setup.py testr --testr-args='{posargs}'