Create API to update openrc

API: /api/v1/functest/openstack/action
METHOD: POST
PARAMS:
{
    "action": "update_openrc",
    "args": {
         "openrc": {
             "OS_AUTH_URL": "http://192.168.30.222:5000/v3",
             "OS_IDENTITY_API_VERSION": "3",
             "OS_IMAGE_API_VERSION": "2",
             "OS_PASSWORD": "console",
             "OS_PROJECT_DOMAIN_NAME": "default",
             "OS_PROJECT_NAME": "admin",
             "OS_TENANT_NAME": "admin",
             "OS_USERNAME": "admin",
             "OS_USER_DOMAIN_NAME": "default"
         }
    }
}

JIRA: FUNCTEST-855

Change-Id: I7c935483c264f2b1b47239684392c8a37dc23d26
Signed-off-by: Linda Wang <wangwulin@huawei.com>

5 files changed, 54 insertions, 26 deletions

diff --git a/functest/api/base.py b/functest/api/base.py
index efeab824..ffc56786 100644
--- a/functest/api/base.py
+++ b/functest/api/base.py
@@ -17,7 +17,7 @@ import logging
 from flask import request
 from flask_restful import Resource
 
-from functest.api.common import api_utils, error
+from functest.api.common import api_utils
 
 
 LOGGER = logging.getLogger(__name__)
@@ -58,7 +58,7 @@ class ApiResource(Resource):
         try:
             return getattr(self, action)(args)
         except AttributeError:
-            error.result_handler(status=1, data='No such action')
+            api_utils.result_handler(status=1, data='No such action')
 
 
 # Import modules from package "functest.api.resources"
diff --git a/functest/api/common/api_utils.py b/functest/api/common/api_utils.py
index f518e777..d85acf92 100644
--- a/functest/api/common/api_utils.py
+++ b/functest/api/common/api_utils.py
@@ -18,6 +18,7 @@ import os
 import sys
 from oslo_utils import importutils
 
+from flask import jsonify
 import six
 
 import functest
@@ -89,3 +90,12 @@ def change_obj_to_dict(obj):
     for key, value in vars(obj).items():
         dic.update({key: value})
     return dic
+
+
+def result_handler(status, data):
+    """ Return the json format of result in dict """
+    result = {
+        'status': status,
+        'result': data
+    }
+    return jsonify(result)
diff --git a/functest/api/common/error.py b/functest/api/common/error.py
deleted file mode 100644
index d0045225..00000000
--- a/functest/api/common/error.py
+++ /dev/null
@@ -1,24 +0,0 @@
-#!/usr/bin/env python
-
-# Copyright (c) 2017 Huawei Technologies Co.,Ltd and others.
-#
-# All rights reserved. This program and the accompanying materials
-# are made available under the terms of the Apache License, Version 2.0
-# which accompanies this distribution, and is available at
-# http://www.apache.org/licenses/LICENSE-2.0
-
-"""
-Used to handle results
-
-"""
-
-from flask import jsonify
-
-
-def result_handler(status, data):
-    """ Return the json format of result in dict """
-    result = {
-        'status': status,
-        'result': data
-    }
-    return jsonify(result)
diff --git a/functest/api/resources/v1/creds.py b/functest/api/resources/v1/creds.py
index e402d7e3..45e4559f 100644
--- a/functest/api/resources/v1/creds.py
+++ b/functest/api/resources/v1/creds.py
@@ -11,13 +11,19 @@
 Resources to handle openstack related requests
 """
 
+import collections
+import logging
+
 from flask import jsonify
 
 from functest.api.base import ApiResource
+from functest.api.common import api_utils
 from functest.cli.commands.cli_os import OpenStack
 from functest.utils import openstack_utils as os_utils
 from functest.utils.constants import CONST
 
+LOGGER = logging.getLogger(__name__)
+
 
 class V1Creds(ApiResource):
     """ V1Creds Resource class"""
@@ -27,3 +33,35 @@ class V1Creds(ApiResource):
         os_utils.source_credentials(CONST.__getattribute__('openstack_creds'))
         credentials_show = OpenStack.show_credentials()
         return jsonify(credentials_show)
+
+    def post(self):
+        """ Used to handle post request """
+        return self._dispatch_post()
+
+    def update_openrc(self, args):  # pylint: disable=no-self-use
+        """ Used to update the OpenStack RC file """
+        try:
+            openrc_vars = args['openrc']
+        except KeyError:
+            return api_utils.result_handler(
+                status=0, data='openrc must be provided')
+        else:
+            if not isinstance(openrc_vars, collections.Mapping):
+                return api_utils.result_handler(
+                    status=0, data='args should be a dict')
+
+        lines = ['export {}={}\n'.format(k, v) for k, v in openrc_vars.items()]
+
+        rc_file = CONST.__getattribute__('openstack_creds')
+        with open(rc_file, 'w') as creds_file:
+            creds_file.writelines(lines)
+
+        LOGGER.info("Sourcing the OpenStack RC file...")
+        try:
+            os_utils.source_credentials(rc_file)
+        except Exception as err:  # pylint: disable=broad-except
+            LOGGER.exception('Failed to source the OpenStack RC file')
+            return api_utils.result_handler(status=0, data=str(err))
+
+        return api_utils.result_handler(
+            status=0, data='Update openrc successfully')
diff --git a/functest/api/urls.py b/functest/api/urls.py
index ca45b4be..40af98d6 100644
--- a/functest/api/urls.py
+++ b/functest/api/urls.py
@@ -32,6 +32,10 @@ URLPATTERNS = [
     # GET /api/v1/functest/openstack/credentials => GET credentials
     Url('/api/v1/functest/openstack/credentials', 'v1_creds'),
 
+    # POST /api/v1/functest/openstack/action
+    # {"action":"update_openrc", "args": {"openrc": {}}} => Update openrc
+    Url('/api/v1/functest/openstack/action', 'v1_creds'),
+
     # GET /api/v1/functest/testcases => GET all testcases
     Url('/api/v1/functest/testcases', 'v1_test_cases'),