Extracted all global parameters into functest_constants.py

JIRA: FUNCTEST-533

1. Extracted all global variables into functest_constants.py and updated all affected areas accordingly
2. Used os.path.join to replace '/'  to come up with the path for better cross-platform support and improve the path accuracy
3. Removed unused variables
4. Updated the hardcoded path in Dockerfile by using variable reference
5. Removed "/" ending from all path variables
6. Updated the unit test

Change-Id: Ib30a81d1f0c83fbaef042d63c187c27bd18301bb
Signed-off-by: helenyao <yaohelan@huawei.com>

11 files changed, 369 insertions, 343 deletions

diff --git a/functest/ci/__init__.py b/functest/ci/__init__.py
index e69de29b..e69de29b 100644..100755
--- a/functest/ci/__init__.py
+++ b/functest/ci/__init__.py
diff --git a/functest/ci/check_os.sh b/functest/ci/check_os.sh
index 053796d9..053796d9 100644..100755
--- a/functest/ci/check_os.sh
+++ b/functest/ci/check_os.sh
diff --git a/functest/ci/config_functest.yaml b/functest/ci/config_functest.yaml
index de019486..a19139c0 100644..100755
--- a/functest/ci/config_functest.yaml
+++ b/functest/ci/config_functest.yaml
@@ -1,199 +1,206 @@
-general:
-    directories:
-        # Relative to the path where the repo is cloned:
-        dir_vping:         functest/opnfv_tests/OpenStack/vPing/
-        dir_odl:           functest/opnfv_tests/Controllers/ODL/
-        dir_rally:         functest/opnfv_tests/OpenStack/rally/
-        dir_tempest_cases: functest/opnfv_tests/OpenStack/tempest/custom_tests/
-        dir_vIMS:          functest/opnfv_tests/vnf/vIMS/
-        dir_onos:          functest/opnfv_tests/Controllers/ONOS/Teston/
-        dir_onos_sfc:      functest/opnfv_tests/Controllers/ONOS/Sfc/
-
-        # Absolute path
-        dir_repos:          /home/opnfv/repos
-        dir_repo_functest:  /home/opnfv/repos/functest
-        dir_repo_rally:     /home/opnfv/repos/rally
-        dir_repo_tempest:   /home/opnfv/repos/tempest
-        dir_repo_releng:    /home/opnfv/repos/releng
-        dir_repo_vims_test: /home/opnfv/repos/vims-test
-        dir_repo_bgpvpn:    /home/opnfv/repos/bgpvpn
-        dir_repo_onos:      /home/opnfv/repos/onos
-        dir_repo_promise:   /home/opnfv/repos/promise
-        dir_repo_doctor:    /home/opnfv/repos/doctor
-        dir_repo_copper:    /home/opnfv/repos/copper
-        dir_repo_ovno:      /home/opnfv/repos/ovno
-        dir_repo_parser:    /home/opnfv/repos/parser
-        dir_repo_domino:    /home/opnfv/repos/domino
-        dir_functest:       /home/opnfv/functest
-        dir_results:        /home/opnfv/functest/results
-        dir_functest_conf:  /home/opnfv/functest/conf
-        dir_rally_res:      /home/opnfv/functest/results/rally/
-        dir_functest_data:  /home/opnfv/functest/data
-        dir_vIMS_data:      /home/opnfv/functest/data/vIMS
-        dir_rally_inst:     /home/opnfv/.rally
-
-    openstack:
-        snapshot_file: /home/opnfv/functest/conf/openstack_snapshot.yaml
-
-        image_name: Cirros-0.3.4
-        image_file_name:  cirros-0.3.4-x86_64-disk.img
-        image_disk_format:  qcow2
-
-        flavor_name: opnfv_flavor
-        flavor_ram: 512
-        flavor_disk: 1
-        flavor_vcpus: 1
-
-        # Private network for functest. Will be created by config_functest.py
-        neutron_private_net_name: functest-net
-        neutron_private_subnet_name: functest-subnet
-        neutron_private_subnet_cidr: 192.168.120.0/24
-        neutron_private_subnet_start: 192.168.120.2
-        neutron_private_subnet_end: 192.168.120.254
-        neutron_private_subnet_gateway: 192.168.120.254
-        neutron_router_name: functest-router
-
-healthcheck:
-    disk_image: /home/opnfv/functest/data/cirros-0.3.4-x86_64-disk.img
-    disk_format: qcow2
-    wait_time: 60
-
-vping:
-    ping_timeout:   200
-    vm_flavor: m1.tiny # adapt to your environment
-    vm_name_1: opnfv-vping-1
-    vm_name_2: opnfv-vping-2
-    image_name: functest-vping
-    vping_private_net_name: vping-net
-    vping_private_subnet_name: vping-subnet
-    vping_private_subnet_cidr: 192.168.130.0/24
-    vping_router_name: vping-router
-    vping_sg_name: vPing-sg
-    vping_sg_descr: Security group for vPing test case
-
-onos_sfc:
-    image_name: TestSfcVm
-    image_file_name: firewall_block_image.img
-
-tempest:
-    identity:
-        tenant_name: tempest
-        tenant_description: Tenant for Tempest test suite
-        user_name: tempest
-        user_password: tempest
-    validation:
-        ssh_timeout: 130
-    private_net_name: tempest-net
-    private_subnet_name: tempest-subnet
-    private_subnet_cidr: 192.168.150.0/24
-    router_name: tempest-router
-    use_custom_images: False
-    use_custom_flavors: False
-
-rally:
-    deployment_name: opnfv-rally
-    network_name: rally-net
-    subnet_name: rally-subnet
-    subnet_cidr: 192.168.140.0/24
-    router_name: rally-router
-
-vIMS:
-    general:
-        tenant_name: vIMS
-        tenant_description: vIMS Functionality Testing
-        images:
-            ubuntu:
-                image_url: 'http://cloud-images.ubuntu.com/trusty/current/trusty-server-cloudimg-amd64-disk1.img'
-                image_name: ubuntu_14.04
-            centos:
-                image_url: 'http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud-1510.qcow2'
-                image_name: centos_7
-    cloudify:
-        blueprint:
-            url: https://github.com/boucherv-orange/cloudify-manager-blueprints.git
-            branch: "3.3.1-build"
-        requierments:
-            ram_min: 3000
-            os_image: centos_7
-        inputs:
-            keystone_username: ""
-            keystone_password: ""
-            keystone_tenant_name: ""
-            keystone_url: ""
-            manager_public_key_name: 'manager-kp'
-            agent_public_key_name: 'agent-kp'
-            image_id: ""
-            flavor_id: "3"
-            external_network_name: ""
-            ssh_user: centos
-            agents_user: ubuntu
-    clearwater:
-        blueprint:
-            file_name: 'openstack-blueprint.yaml'
-            name: "clearwater-opnfv"
-            destination_folder: "opnfv-cloudify-clearwater"
-            url: 'https://github.com/Orange-OpenSource/opnfv-cloudify-clearwater.git'
-            branch: "stable"
-        deployment-name: 'clearwater-opnfv'
-        requierments:
-            ram_min: 1700
-            os_image: ubuntu_14.04
-        inputs:
-            image_id: ''
-            flavor_id: ''
-            agent_user: 'ubuntu'
-            external_network_name: ''
-            public_domain: clearwater.opnfv
-ONOS:
-    general:
-        onosbench_username: 'root'
-        onosbench_password: 'root'
-        onoscli_username: 'root'
-        onoscli_password: 'root'
-        runtimeout: 300
-    environment:
-        OCT: '10.20.0.1'
-        OC1: '10.20.0.7'
-        OC2: '10.20.0.7'
-        OC3: '10.20.0.7'
-        OCN: '10.20.0.4'
-        OCN2: '10.20.0.5'
-        installer_master: '10.20.0.2'
-        installer_master_username: 'root'
-        installer_master_password: 'r00tme'
-multisite:
-    fuel_environment:
-        installer_username: 'root'
-        installer_password: 'r00tme'
-    compass_environment:
-        installer_username: 'root'
-        installer_password: 'root'
-        multisite_controller_ip: '10.1.0.50'
-promise:
-    tenant_name: promise
-    tenant_description: promise Functionality Testing
-    user_name: promiser
-    user_pwd: test
-    image_name: promise-img
-    flavor_name: promise-flavor
-    flavor_vcpus: 1
-    flavor_ram: 128
-    flavor_disk: 0
-    network_name: promise-net
-    subnet_name: promise-subnet
-    subnet_cidr: 192.168.121.0/24
-    router_name: promise-router
-
-example:
-    example_vm_name: example-vm
-    example_flavor: m1.small
-    example_image_name: functest-example-vm
-    example_private_net_name: example-net
-    example_private_subnet_name: example-subnet
-    example_private_subnet_cidr: 192.168.170.0/24
-    example_router_name: example-router
-    example_sg_name: example-sg
-    example_sg_descr: Example Security group
-
-results:
-    test_db_url: http://testresults.opnfv.org/test/api/v1
+general:

+    directories:

+        # Relative to the path where the repo is cloned:

+        dir_vping:         functest/opnfv_tests/OpenStack/vPing

+        dir_odl:           functest/opnfv_tests/Controllers/ODL

+        dir_rally:         functest/opnfv_tests/OpenStack/rally

+        dir_tempest_cases: functest/opnfv_tests/OpenStack/tempest/custom_tests

+        dir_vIMS:          functest/opnfv_tests/vnf/vIMS

+        dir_onos:          functest/opnfv_tests/Controllers/ONOS/Teston

+        dir_onos_sfc:      functest/opnfv_tests/Controllers/ONOS/Sfc

+

+        # Absolute path

+        dir_home:           /home/opnfv

+        dir_repos:          /home/opnfv/repos

+        dir_repo_functest:  /home/opnfv/repos/functest

+        dir_repo_rally:     /home/opnfv/repos/rally

+        dir_repo_tempest:   /home/opnfv/repos/tempest

+        dir_repo_releng:    /home/opnfv/repos/releng

+        dir_repo_vims_test: /home/opnfv/repos/vims-test

+        dir_repo_sdnvpn:    /home/opnfv/repos/sdnvpn

+        dir_repo_sfc:       /home/opnfv/repos/sfc

+        dir_repo_onos:      /home/opnfv/repos/onos

+        dir_repo_promise:   /home/opnfv/repos/promise

+        dir_repo_doctor:    /home/opnfv/repos/doctor

+        dir_repo_copper:    /home/opnfv/repos/copper

+        dir_repo_ovno:      /home/opnfv/repos/ovno

+        dir_repo_parser:    /home/opnfv/repos/parser

+        dir_repo_domino:    /home/opnfv/repos/domino

+        dir_functest:       /home/opnfv/functest

+        dir_functest_test:  /home/opnfv/repos/functest/functest/opnfv_tests

+        dir_results:        /home/opnfv/functest/results

+        dir_functest_conf:  /home/opnfv/functest/conf

+        dir_functest_data:  /home/opnfv/functest/data

+        dir_vIMS_data:      /home/opnfv/functest/data/vIMS/

+        dir_rally_inst:     /home/opnfv/.rally

+

+    openstack:

+        creds: /home/opnfv/functest/conf/openstack.creds

+        snapshot_file: /home/opnfv/functest/conf/openstack_snapshot.yaml

+

+        image_name: Cirros-0.3.4

+        image_file_name:  cirros-0.3.4-x86_64-disk.img

+        image_disk_format:  qcow2

+

+        flavor_name: opnfv_flavor

+        flavor_ram: 512

+        flavor_disk: 1

+        flavor_vcpus: 1

+

+        # Private network for functest. Will be created by config_functest.py

+        neutron_private_net_name: functest-net

+        neutron_private_subnet_name: functest-subnet

+        neutron_private_subnet_cidr: 192.168.120.0/24

+        neutron_private_subnet_start: 192.168.120.2

+        neutron_private_subnet_end: 192.168.120.254

+        neutron_private_subnet_gateway: 192.168.120.254

+        neutron_router_name: functest-router

+

+    functest:

+        testcases_yaml: /home/opnfv/repos/functest/functest/ci/testcases.yaml

+

+healthcheck:

+    disk_image: /home/opnfv/functest/data/cirros-0.3.4-x86_64-disk.img

+    disk_format: qcow2

+    wait_time: 60

+

+vping:

+    ping_timeout:   200

+    vm_flavor: m1.tiny # adapt to your environment

+    vm_name_1: opnfv-vping-1

+    vm_name_2: opnfv-vping-2

+    image_name: functest-vping

+    vping_private_net_name: vping-net

+    vping_private_subnet_name: vping-subnet

+    vping_private_subnet_cidr: 192.168.130.0/24

+    vping_router_name: vping-router

+    vping_sg_name: vPing-sg

+    vping_sg_descr: Security group for vPing test case

+

+onos_sfc:

+    image_base_url: http://artifacts.opnfv.org/sfc/demo

+    image_name: TestSfcVm

+    image_file_name: firewall_block_image.img

+

+tempest:

+    identity:

+        tenant_name: tempest

+        tenant_description: Tenant for Tempest test suite

+        user_name: tempest

+        user_password: tempest

+    validation:

+        ssh_timeout: 130

+    private_net_name: tempest-net

+    private_subnet_name: tempest-subnet

+    private_subnet_cidr: 192.168.150.0/24

+    router_name: tempest-router

+    use_custom_images: False

+    use_custom_flavors: False

+

+rally:

+    deployment_name: opnfv-rally

+    network_name: rally-net

+    subnet_name: rally-subnet

+    subnet_cidr: 192.168.140.0/24

+    router_name: rally-router

+

+vIMS:

+    general:

+        tenant_name: vIMS

+        tenant_description: vIMS Functionality Testing

+        images:

+            ubuntu:

+                image_url: http://cloud-images.ubuntu.com/trusty/current/trusty-server-cloudimg-amd64-disk1.img

+                image_name: ubuntu_14.04

+            centos:

+                image_url: http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud-1510.qcow2

+                image_name: centos_7

+    cloudify:

+        blueprint:

+            url: https://github.com/boucherv-orange/cloudify-manager-blueprints.git

+            branch: "3.3.1-build"

+        requierments:

+            ram_min: 3000

+            os_image: centos_7

+        inputs:

+            keystone_username: ""

+            keystone_password: ""

+            keystone_tenant_name: ""

+            keystone_url: ""

+            manager_public_key_name: 'manager-kp'

+            agent_public_key_name: 'agent-kp'

+            image_id: ""

+            flavor_id: "3"

+            external_network_name: ""

+            ssh_user: centos

+            agents_user: ubuntu

+    clearwater:

+        blueprint:

+            file_name: 'openstack-blueprint.yaml'

+            name: "clearwater-opnfv"

+            destination_folder: "opnfv-cloudify-clearwater"

+            url: https://github.com/Orange-OpenSource/opnfv-cloudify-clearwater.git

+            branch: "stable"

+        deployment-name: 'clearwater-opnfv'

+        requierments:

+            ram_min: 1700

+            os_image: ubuntu_14.04

+        inputs:

+            image_id: ''

+            flavor_id: ''

+            agent_user: 'ubuntu'

+            external_network_name: ''

+            public_domain: clearwater.opnfv

+ONOS:

+    general:

+        onosbench_username: 'root'

+        onosbench_password: 'root'

+        onoscli_username: 'root'

+        onoscli_password: 'root'

+        runtimeout: 300

+    environment:

+        OCT: '10.20.0.1'

+        OC1: '10.20.0.7'

+        OC2: '10.20.0.7'

+        OC3: '10.20.0.7'

+        OCN: '10.20.0.4'

+        OCN2: '10.20.0.5'

+        installer_master: '10.20.0.2'

+        installer_master_username: 'root'

+        installer_master_password: 'r00tme'

+multisite:

+    fuel_environment:

+        installer_username: 'root'

+        installer_password: 'r00tme'

+    compass_environment:

+        installer_username: 'root'

+        installer_password: 'root'

+        multisite_controller_ip: '10.1.0.50'

+promise:

+    tenant_name: promise

+    tenant_description: promise Functionality Testing

+    user_name: promiser

+    user_pwd: test

+    image_name: promise-img

+    flavor_name: promise-flavor

+    flavor_vcpus: 1

+    flavor_ram: 128

+    flavor_disk: 0

+    network_name: promise-net

+    subnet_name: promise-subnet

+    subnet_cidr: 192.168.121.0/24

+    router_name: promise-router

+

+example:

+    example_vm_name: example-vm

+    example_flavor: m1.small

+    example_image_name: functest-example-vm

+    example_private_net_name: example-net

+    example_private_subnet_name: example-subnet

+    example_private_subnet_cidr: 192.168.170.0/24

+    example_router_name: example-router

+    example_sg_name: example-sg

+    example_sg_descr: Example Security group

+

+results:

+    test_db_url: http://testresults.opnfv.org/test/api/v1

diff --git a/functest/ci/config_patch.yaml b/functest/ci/config_patch.yaml
index 46064a07..46064a07 100644..100755
--- a/functest/ci/config_patch.yaml
+++ b/functest/ci/config_patch.yaml
diff --git a/functest/ci/exec_test.sh b/functest/ci/exec_test.sh
index f7b96af2..a71079e3 100644
--- a/functest/ci/exec_test.sh
+++ b/functest/ci/exec_test.sh
@@ -127,18 +127,18 @@ function run_test(){
         "ovno")
             # suite under rewritting for colorado
             # no need to run anything until refactoring done
-            # ${repos_dir}/ovno/Testcases/RunTests.sh
+            # ${REPOS_DIR}/ovno/Testcases/RunTests.sh
         ;;
         "security_scan")
             echo "Sourcing Credentials ${FUNCTEST_CONF_DIR}/stackrc for undercloud .."
             source ${FUNCTEST_CONF_DIR}/stackrc
-            python ${repos_dir}/securityscanning/security_scan.py --config ${repos_dir}/securityscanning/config.ini
+            python ${REPOS_DIR}/securityscanning/security_scan.py --config ${REPOS_DIR}/securityscanning/config.ini
         ;;
         "copper")
             python ${FUNCTEST_TEST_DIR}/features/copper.py $report
         ;;
         "moon")
-            python ${repos_dir}/moon/tests/run_tests.py $report
+            python ${REPOS_DIR}/moon/tests/run_tests.py $report
         ;;
         "multisite")
             python ${FUNCTEST_TEST_DIR}/OpenStack/tempest/gen_tempest_conf.py
@@ -147,7 +147,8 @@ function run_test(){
                 -c ${FUNCTEST_TEST_DIR}/OpenStack/tempest/tempest_multisite.conf
         ;;
         "odl-sfc")
-            ODL_SFC_DIR=${repos_dir}/sfc/tests/functest/odl-sfc
+            ODL_SFC_DIR=${REPOS_DIR}/sfc/tests/functest/odl-sfc
+            # pass FUNCTEST_REPO_DIR inside prepare_odl_sfc.bash
             FUNCTEST_REPO_DIR=${FUNCTEST_REPO_DIR} python ${ODL_SFC_DIR}/prepare_odl_sfc.py || exit $?
             source ${ODL_SFC_DIR}/tackerc
             python ${ODL_SFC_DIR}/sfc.py $report
@@ -196,8 +197,8 @@ done
 
 
 # Source credentials
-echo "Sourcing Credentials ${FUNCTEST_CONF_DIR}/openstack.creds to run the test.."
-source ${FUNCTEST_CONF_DIR}/openstack.creds
+echo "Sourcing Credentials ${creds} to run the test.."
+source ${creds}
 
 # ODL Boron workaround to create additional flow rules to allow port 22 TCP
 if [[ $DEPLOY_SCENARIO == *"odl_l2-sfc"* ]]; then
diff --git a/functest/ci/generate_report.py b/functest/ci/generate_report.py
index c9343729..9ae9dca5 100644..100755
--- a/functest/ci/generate_report.py
+++ b/functest/ci/generate_report.py
@@ -1,10 +1,10 @@
 import json
-import os
 import re
 import urllib2
 
 import functest.utils.functest_logger as ft_logger
 import functest.utils.functest_utils as ft_utils
+import functest.utils.functest_constants as ft_constants
 
 
 COL_1_LEN = 25
@@ -15,8 +15,15 @@ COL_5_LEN = 75
 
 # If we run from CI (Jenkins) we will push the results to the DB
 # and then we can print the url to the specific test result
-IS_CI_RUN = False
-BUILD_TAG = None
+
+
+class GlobalVariables:
+    IS_CI_RUN = ft_constants.IS_CI_RUN
+    BUILD_TAG = ft_constants.CI_BUILD_TAG
+    INSTALLER = ft_constants.CI_INSTALLER_TYPE
+    CI_LOOP = ft_constants.CI_LOOP
+    SCENARIO = ft_constants.CI_SCENARIO
+
 
 logger = ft_logger.Logger("generate_report").getLogger()
 
@@ -34,7 +41,8 @@ def init(tiers_to_run):
 
 
 def get_results_from_db():
-    url = ft_utils.get_db_url() + '/results?build_tag=' + BUILD_TAG
+    url = ft_utils.get_db_url() + '/results?build_tag=' \
+        + GlobalVariables.BUILD_TAG
     logger.debug("Query to rest api: %s" % url)
     try:
         data = json.load(urllib2.urlopen(url))
@@ -61,7 +69,7 @@ def print_line(w1, w2='', w3='', w4='', w5=''):
            '| ' + w2.ljust(COL_2_LEN - 1) +
            '| ' + w3.ljust(COL_3_LEN - 1) +
            '| ' + w4.ljust(COL_4_LEN - 1))
-    if IS_CI_RUN:
+    if GlobalVariables.IS_CI_RUN:
         str += ('| ' + w5.ljust(COL_5_LEN - 1))
     str += '|\n'
     return str
@@ -69,7 +77,7 @@ def print_line(w1, w2='', w3='', w4='', w5=''):
 
 def print_line_no_columns(str):
     TOTAL_LEN = COL_1_LEN + COL_2_LEN + COL_3_LEN + COL_4_LEN + 2
-    if IS_CI_RUN:
+    if GlobalVariables.IS_CI_RUN:
         TOTAL_LEN += COL_5_LEN + 1
     return ('| ' + str.ljust(TOTAL_LEN) + "|\n")
 
@@ -79,21 +87,16 @@ def print_separator(char="=", delimiter="+"):
            delimiter + char * COL_2_LEN +
            delimiter + char * COL_3_LEN +
            delimiter + char * COL_4_LEN)
-    if IS_CI_RUN:
+    if GlobalVariables.IS_CI_RUN:
         str += (delimiter + char * COL_5_LEN)
     str += '+\n'
     return str
 
 
 def main(args):
-    global BUILD_TAG, IS_CI_RUN
     executed_test_cases = args
 
-    BUILD_TAG = os.getenv("BUILD_TAG")
-    if BUILD_TAG is not None:
-        IS_CI_RUN = True
-
-    if IS_CI_RUN:
+    if GlobalVariables.IS_CI_RUN:
         results = get_results_from_db()
         if results is not None:
             for test in executed_test_cases:
@@ -102,19 +105,15 @@ def main(args):
                              "result": data['result']})
 
     TOTAL_LEN = COL_1_LEN + COL_2_LEN + COL_3_LEN + COL_4_LEN
-    if IS_CI_RUN:
+    if GlobalVariables.IS_CI_RUN:
         TOTAL_LEN += COL_5_LEN
     MID = TOTAL_LEN / 2
 
-    INSTALLER = os.getenv('INSTALLER_TYPE', 'unknown')
-    CI_LOOP = os.getenv('CI_LOOP')
-    SCENARIO = os.getenv('DEPLOY_SCENARIO')
-    CI_LOOP = None
-    if BUILD_TAG is not None:
-        if re.search("daily", BUILD_TAG) is not None:
-            CI_LOOP = "daily"
+    if GlobalVariables.BUILD_TAG is not None:
+        if re.search("daily", GlobalVariables.BUILD_TAG) is not None:
+            GlobalVariables.CI_LOOP = "daily"
         else:
-            CI_LOOP = "weekly"
+            GlobalVariables.CI_LOOP = "weekly"
 
     str = ''
     str += print_separator('=', delimiter="=")
@@ -122,16 +121,20 @@ def main(args):
     str += print_separator('=', delimiter="=")
     str += print_line_no_columns(' ')
     str += print_line_no_columns(" Deployment description:")
-    str += print_line_no_columns("   INSTALLER: %s" % INSTALLER)
-    if SCENARIO is not None:
-        str += print_line_no_columns("   SCENARIO:  %s" % SCENARIO)
-    if BUILD_TAG is not None:
-        str += print_line_no_columns("   BUILD TAG: %s" % BUILD_TAG)
-    if CI_LOOP is not None:
-        str += print_line_no_columns("   CI LOOP:   %s" % CI_LOOP)
+    str += print_line_no_columns("   INSTALLER: %s"
+                                 % GlobalVariables.INSTALLER)
+    if GlobalVariables.SCENARIO is not None:
+        str += print_line_no_columns("   SCENARIO:  %s"
+                                     % GlobalVariables.SCENARIO)
+    if GlobalVariables.BUILD_TAG is not None:
+        str += print_line_no_columns("   BUILD TAG: %s"
+                                     % GlobalVariables.BUILD_TAG)
+    if GlobalVariables.CI_LOOP is not None:
+        str += print_line_no_columns("   CI LOOP:   %s"
+                                     % GlobalVariables.CI_LOOP)
     str += print_line_no_columns(' ')
     str += print_separator('=')
-    if IS_CI_RUN:
+    if GlobalVariables.IS_CI_RUN:
         str += print_line('TEST CASE', 'TIER', 'DURATION', 'RESULT', 'URL')
     else:
         str += print_line('TEST CASE', 'TIER', 'DURATION', 'RESULT')
diff --git a/functest/ci/prepare_env.py b/functest/ci/prepare_env.py
index e5c24cc3..246a02a8 100644..100755
--- a/functest/ci/prepare_env.py
+++ b/functest/ci/prepare_env.py
@@ -25,6 +25,7 @@ import yaml
 import functest.utils.functest_logger as ft_logger
 import functest.utils.functest_utils as ft_utils
 import functest.utils.openstack_utils as os_utils
+import functest.utils.functest_constants as ft_constants
 
 actions = ['start', 'check']
 parser = argparse.ArgumentParser()
@@ -38,34 +39,13 @@ args = parser.parse_args()
 logger = ft_logger.Logger("prepare_env").getLogger()
 
 
-""" global variables """
-INSTALLERS = ['fuel', 'compass', 'apex', 'joid']
-CI_INSTALLER_TYPE = ""
-CI_INSTALLER_IP = ""
-CI_SCENARIO = ""
-CI_DEBUG = False
-CONFIG_FUNCTEST_PATH = os.environ["CONFIG_FUNCTEST_YAML"]
+CONFIG_FUNCTEST_PATH = ft_constants.CONFIG_FUNCTEST_YAML
 CONFIG_PATCH_PATH = os.path.join(os.path.dirname(
     CONFIG_FUNCTEST_PATH), "config_patch.yaml")
 
 with open(CONFIG_PATCH_PATH) as f:
     functest_patch_yaml = yaml.safe_load(f)
 
-FUNCTEST_CONF_DIR = \
-    ft_utils.get_functest_config('general.directories.dir_functest_conf')
-
-
-FUNCTEST_DATA_DIR = \
-    ft_utils.get_functest_config('general.directories.dir_functest_data')
-FUNCTEST_RESULTS_DIR = \
-    ft_utils.get_functest_config('general.directories.dir_results')
-DEPLOYMENT_MAME = \
-    ft_utils.get_functest_config('rally.deployment_name')
-TEMPEST_REPO_DIR = \
-    ft_utils.get_functest_config('general.directories.dir_repo_tempest')
-
-ENV_FILE = FUNCTEST_CONF_DIR + "/env_active"
-
 
 def print_separator():
     logger.info("==============================================")
@@ -74,97 +54,97 @@ def print_separator():
 def check_env_variables():
     print_separator()
     logger.info("Checking environment variables...")
-    global CI_INSTALLER_TYPE
-    global CI_INSTALLER_IP
-    global CI_DEBUG
-    global CI_SCENARIO
-    CI_INSTALLER_TYPE = os.getenv('INSTALLER_TYPE')
-    CI_INSTALLER_IP = os.getenv('INSTALLER_IP')
-    CI_SCENARIO = os.getenv('DEPLOY_SCENARIO')
-    CI_NODE = os.getenv('NODE_NAME')
-    CI_BUILD_TAG = os.getenv('BUILD_TAG')
-    CI_DEBUG = os.getenv('CI_DEBUG')
-
-    if CI_INSTALLER_TYPE is None:
+
+    if ft_constants.CI_INSTALLER_TYPE is None:
         logger.warning("The env variable 'INSTALLER_TYPE' is not defined.")
-        CI_INSTALLER_TYPE = "undefined"
+        ft_constants.CI_INSTALLER_TYPE = "undefined"
     else:
-        if CI_INSTALLER_TYPE not in INSTALLERS:
+        if ft_constants.CI_INSTALLER_TYPE not in ft_constants.INSTALLERS:
             logger.warning("INSTALLER_TYPE=%s is not a valid OPNFV installer. "
                            "Available OPNFV Installers are : %s. "
                            "Setting INSTALLER_TYPE=undefined."
-                           % (CI_INSTALLER_TYPE, INSTALLERS))
-            CI_INSTALLER_TYPE = "undefined"
+                           % (ft_constants.CI_INSTALLER_TYPE,
+                              ft_constants.INSTALLERS))
+            ft_constants.CI_INSTALLER_TYPE = "undefined"
         else:
-            logger.info("    INSTALLER_TYPE=%s" % CI_INSTALLER_TYPE)
+            logger.info("    INSTALLER_TYPE=%s"
+                        % ft_constants.CI_INSTALLER_TYPE)
 
-    if CI_INSTALLER_IP is None:
+    if ft_constants.CI_INSTALLER_IP is None:
         logger.warning("The env variable 'INSTALLER_IP' is not defined. "
                        "It is needed to fetch the OpenStack credentials. "
                        "If the credentials are not provided to the "
                        "container as a volume, please add this env variable "
                        "to the 'docker run' command.")
     else:
-        logger.info("    INSTALLER_IP=%s" % CI_INSTALLER_IP)
+        logger.info("    INSTALLER_IP=%s" % ft_constants.CI_INSTALLER_IP)
 
-    if CI_SCENARIO is None:
+    if ft_constants.CI_SCENARIO is None:
         logger.warning("The env variable 'DEPLOY_SCENARIO' is not defined. "
                        "Setting CI_SCENARIO=undefined.")
-        CI_SCENARIO = "undefined"
+        ft_constants.CI_SCENARIO = "undefined"
     else:
-        logger.info("    DEPLOY_SCENARIO=%s" % CI_SCENARIO)
-    if CI_DEBUG:
-        logger.info("    CI_DEBUG=%s" % CI_DEBUG)
+        logger.info("    DEPLOY_SCENARIO=%s" % ft_constants.CI_SCENARIO)
+    if ft_constants.CI_DEBUG:
+        logger.info("    CI_DEBUG=%s" % ft_constants.CI_DEBUG)
 
-    if CI_NODE:
-        logger.info("    NODE_NAME=%s" % CI_NODE)
+    if ft_constants.CI_NODE:
+        logger.info("    NODE_NAME=%s" % ft_constants.CI_NODE)
 
-    if CI_BUILD_TAG:
-        logger.info("    BUILD_TAG=%s" % CI_BUILD_TAG)
+    if ft_constants.CI_BUILD_TAG:
+        logger.info("    BUILD_TAG=%s" % ft_constants.CI_BUILD_TAG)
+
+    if ft_constants.IS_CI_RUN:
+        logger.info("    IS_CI_RUN=%s" % ft_constants.IS_CI_RUN)
 
 
 def create_directories():
     print_separator()
     logger.info("Creating needed directories...")
-    if not os.path.exists(FUNCTEST_CONF_DIR):
-        os.makedirs(FUNCTEST_CONF_DIR)
-        logger.info("    %s created." % FUNCTEST_CONF_DIR)
+    if not os.path.exists(ft_constants.FUNCTEST_CONF_DIR):
+        os.makedirs(ft_constants.FUNCTEST_CONF_DIR)
+        logger.info("    %s created." % ft_constants.FUNCTEST_CONF_DIR)
     else:
-        logger.debug("   %s already exists." % FUNCTEST_CONF_DIR)
+        logger.debug("   %s already exists."
+                     % ft_constants.FUNCTEST_CONF_DIR)
 
-    if not os.path.exists(FUNCTEST_DATA_DIR):
-        os.makedirs(FUNCTEST_DATA_DIR)
-        logger.info("    %s created." % FUNCTEST_DATA_DIR)
+    if not os.path.exists(ft_constants.FUNCTEST_DATA_DIR):
+        os.makedirs(ft_constants.FUNCTEST_DATA_DIR)
+        logger.info("    %s created." % ft_constants.FUNCTEST_DATA_DIR)
     else:
-        logger.debug("   %s already exists." % FUNCTEST_DATA_DIR)
+        logger.debug("   %s already exists."
+                     % ft_constants.FUNCTEST_DATA_DIR)
 
 
 def source_rc_file():
     print_separator()
     logger.info("Fetching RC file...")
-    rc_file = os.getenv('creds')
-    if rc_file is None:
+
+    if ft_constants.OPENSTACK_CREDS is None:
         logger.warning("The environment variable 'creds' must be set and"
                        "pointing to the local RC file. Using default: "
                        "/home/opnfv/functest/conf/openstack.creds ...")
-        rc_file = "/home/opnfv/functest/conf/openstack.creds"
+        ft_constants.OPENSTACK_CREDS = \
+            "/home/opnfv/functest/conf/openstack.creds"
 
-    if not os.path.isfile(rc_file):
+    if not os.path.isfile(ft_constants.OPENSTACK_CREDS):
         logger.info("RC file not provided. "
                     "Fetching it from the installer...")
-        if CI_INSTALLER_IP is None:
+        if ft_constants.CI_INSTALLER_IP is None:
             logger.error("The env variable CI_INSTALLER_IP must be provided in"
                          " order to fetch the credentials from the installer.")
             sys.exit("Missing CI_INSTALLER_IP.")
-        if CI_INSTALLER_TYPE not in INSTALLERS:
+        if ft_constants.CI_INSTALLER_TYPE not in ft_constants.INSTALLERS:
             logger.error("Cannot fetch credentials. INSTALLER_TYPE=%s is "
                          "not a valid OPNFV installer. Available "
-                         "installers are : %s." % INSTALLERS)
+                         "installers are : %s." % ft_constants.INSTALLERS)
             sys.exit("Wrong INSTALLER_TYPE.")
 
         cmd = ("/home/opnfv/repos/releng/utils/fetch_os_creds.sh "
                "-d %s -i %s -a %s"
-               % (rc_file, CI_INSTALLER_TYPE, CI_INSTALLER_IP))
+               % (ft_constants.OPENSTACK_CREDS,
+                  ft_constants.CI_INSTALLER_TYPE,
+                  ft_constants.CI_INSTALLER_IP))
         logger.debug("Executing command: %s" % cmd)
         p = subprocess.Popen(cmd.split(), stdout=subprocess.PIPE)
         output = p.communicate()[0]
@@ -173,24 +153,39 @@ def source_rc_file():
             logger.error("Failed to fetch credentials from installer.")
             sys.exit(1)
     else:
-        logger.info("RC file provided in %s." % rc_file)
-        if os.path.getsize(rc_file) == 0:
-            logger.error("The file %s is empty." % rc_file)
+        logger.info("RC file provided in %s."
+                    % ft_constants.OPENSTACK_CREDS)
+        if os.path.getsize(ft_constants.OPENSTACK_CREDS) == 0:
+            logger.error("The file %s is empty."
+                         % ft_constants.OPENSTACK_CREDS)
             sys.exit(1)
 
     logger.info("Sourcing the OpenStack RC file...")
-    creds = os_utils.source_credentials(rc_file)
+    creds = os_utils.source_credentials(
+        ft_constants.OPENSTACK_CREDS)
     str = ""
     for key, value in creds.iteritems():
         if re.search("OS_", key):
             str += "\n\t\t\t\t\t\t   " + key + "=" + value
+            if key == 'OS_AUTH_URL':
+                ft_constants.OS_AUTH_URL = value
+            elif key == 'OS_USERNAME':
+                ft_constants.OS_USERNAME = value
+            elif key == 'OS_TENANT_NAME':
+                ft_constants.OS_TENANT_NAME = value
+            elif key == 'OS_PASSWORD':
+                ft_constants.OS_PASSWORD = value
     logger.debug("Used credentials: %s" % str)
+    logger.debug("OS_AUTH_URL:%s" % ft_constants.OS_AUTH_URL)
+    logger.debug("OS_USERNAME:%s" % ft_constants.OS_USERNAME)
+    logger.debug("OS_TENANT_NAME:%s" % ft_constants.OS_TENANT_NAME)
+    logger.debug("OS_PASSWORD:%s" % ft_constants.OS_PASSWORD)
 
 
 def patch_config_file():
     updated = False
     for key in functest_patch_yaml:
-        if key in CI_SCENARIO:
+        if key in ft_constants.CI_SCENARIO:
             new_functest_yaml = dict(ft_utils.merge_dicts(
                 ft_utils.get_functest_yaml(), functest_patch_yaml[key]))
             updated = True
@@ -205,7 +200,7 @@ def patch_config_file():
 def verify_deployment():
     print_separator()
     logger.info("Verifying OpenStack services...")
-    cmd = ("%s/functest/ci/check_os.sh" % ft_utils.FUNCTEST_REPO)
+    cmd = ("%s/functest/ci/check_os.sh" % ft_constants.FUNCTEST_REPO_DIR)
 
     logger.debug("Executing command: %s" % cmd)
     p = subprocess.Popen(cmd, stdout=subprocess.PIPE, shell=True)
@@ -223,19 +218,21 @@ def install_rally():
     logger.info("Creating Rally environment...")
 
     cmd = "rally deployment destroy opnfv-rally"
-    ft_utils.execute_command(cmd,
-                             error_msg=("Deployment %s does not exist."
-                                        % DEPLOYMENT_MAME), verbose=False)
+    ft_utils.execute_command(cmd, error_msg=(
+        "Deployment %s does not exist."
+        % ft_constants.RALLY_DEPLOYMENT_NAME),
+        verbose=False)
     rally_conf = os_utils.get_credentials_for_rally()
     with open('rally_conf.json', 'w') as fp:
         json.dump(rally_conf, fp)
     cmd = "rally deployment create --file=rally_conf.json --name="
-    cmd += DEPLOYMENT_MAME
+    cmd += ft_constants.RALLY_DEPLOYMENT_NAME
     ft_utils.execute_command(cmd,
                              error_msg="Problem creating Rally deployment")
 
     logger.info("Installing tempest from existing repo...")
-    cmd = ("rally verify install --source " + TEMPEST_REPO_DIR +
+    cmd = ("rally verify install --source " +
+           ft_constants.TEMPEST_REPO_DIR +
            " --system-wide")
     ft_utils.execute_command(cmd,
                              error_msg="Problem installing Tempest.")
@@ -258,11 +255,11 @@ def install_rally():
 
 def check_environment():
     msg_not_active = "The Functest environment is not installed."
-    if not os.path.isfile(ENV_FILE):
+    if not os.path.isfile(ft_constants.ENV_FILE):
         logger.error(msg_not_active)
         sys.exit(1)
 
-    with open(ENV_FILE, "r") as env_file:
+    with open(ft_constants.ENV_FILE, "r") as env_file:
         s = env_file.read()
         if not re.search("1", s):
             logger.error(msg_not_active)
@@ -285,7 +282,7 @@ def main():
         verify_deployment()
         install_rally()
 
-        with open(ENV_FILE, "w") as env_file:
+        with open(ft_constants.ENV_FILE, "w") as env_file:
             env_file.write("1")
 
         check_environment()
@@ -295,5 +292,6 @@ def main():
 
     exit(0)
 
+
 if __name__ == '__main__':
     main()
diff --git a/functest/ci/run_tests.py b/functest/ci/run_tests.py
index 015b5840..da9d28a9 100644
--- a/functest/ci/run_tests.py
+++ b/functest/ci/run_tests.py
@@ -21,6 +21,7 @@ import functest.ci.tier_builder as tb
 import functest.core.TestCasesBase as TestCasesBase
 import functest.utils.functest_logger as ft_logger
 import functest.utils.functest_utils as ft_utils
+import functest.utils.functest_constants as ft_constants
 import functest.utils.openstack_clean as os_clean
 import functest.utils.openstack_snapshot as os_snapshot
 import functest.utils.openstack_utils as os_utils
@@ -43,14 +44,17 @@ logger = ft_logger.Logger("run_tests").getLogger()
 
 
 """ global variables """
-EXEC_SCRIPT = ("%s/functest/ci/exec_test.sh" % ft_utils.FUNCTEST_REPO)
-CLEAN_FLAG = True
-REPORT_FLAG = False
-EXECUTED_TEST_CASES = []
+EXEC_SCRIPT = ("%s/functest/ci/exec_test.sh" % ft_constants.FUNCTEST_REPO_DIR)
 
 # This will be the return code of this script. If any of the tests fails,
 # this variable will change to -1
-OVERALL_RESULT = 0
+
+
+class GlobalVariables:
+    EXECUTED_TEST_CASES = []
+    OVERALL_RESULT = 0
+    CLEAN_FLAG = True
+    REPORT_FLAG = False
 
 
 def print_separator(str, count=45):
@@ -61,12 +65,26 @@ def print_separator(str, count=45):
 
 
 def source_rc_file():
-    rc_file = os.getenv('creds')
+    rc_file = ft_constants.OPENSTACK_CREDS
     if not os.path.isfile(rc_file):
         logger.error("RC file %s does not exist..." % rc_file)
         sys.exit(1)
     logger.debug("Sourcing the OpenStack RC file...")
-    os_utils.source_credentials(rc_file)
+    creds = os_utils.source_credentials(rc_file)
+    for key, value in creds.iteritems():
+        if re.search("OS_", key):
+            if key == 'OS_AUTH_URL':
+                ft_constants.OS_AUTH_URL = value
+            elif key == 'OS_USERNAME':
+                ft_constants.OS_USERNAME = value
+            elif key == 'OS_TENANT_NAME':
+                ft_constants.OS_TENANT_NAME = value
+            elif key == 'OS_PASSWORD':
+                ft_constants.OS_PASSWORD = value
+    logger.debug("OS_AUTH_URL:%s" % ft_constants.OS_AUTH_URL)
+    logger.debug("OS_USERNAME:%s" % ft_constants.OS_USERNAME)
+    logger.debug("OS_TENANT_NAME:%s" % ft_constants.OS_TENANT_NAME)
+    logger.debug("OS_PASSWORD:%s" % ft_constants.OS_PASSWORD)
 
 
 def generate_os_snapshot():
@@ -78,7 +96,7 @@ def cleanup():
 
 
 def update_test_info(test_name, result, duration):
-    for test in EXECUTED_TEST_CASES:
+    for test in GlobalVariables.EXECUTED_TEST_CASES:
         if test['test_name'] == test_name:
             test.update({"result": result,
                          "duration": duration})
@@ -98,7 +116,6 @@ def get_run_dict_if_defined(testname):
 
 
 def run_test(test, tier_name):
-    global OVERALL_RESULT, EXECUTED_TEST_CASES
     result_str = "PASS"
     start = datetime.datetime.now()
     test_name = test.get_name()
@@ -108,11 +125,11 @@ def run_test(test, tier_name):
     print_separator("=")
     logger.debug("\n%s" % test)
 
-    if CLEAN_FLAG:
+    if GlobalVariables.CLEAN_FLAG:
         generate_os_snapshot()
 
     flags = (" -t %s" % (test_name))
-    if REPORT_FLAG:
+    if GlobalVariables.REPORT_FLAG:
         flags += " -r"
 
     result = TestCasesBase.TestCasesBase.EX_RUN_ERROR
@@ -123,7 +140,9 @@ def run_test(test, tier_name):
             cls = getattr(module, run_dict['class'])
             test_case = cls()
             result = test_case.run()
-            if result != TestCasesBase.TestCasesBase.EX_SKIP and REPORT_FLAG:
+
+            if result != TestCasesBase.TestCasesBase.EX_SKIP and \
+               GlobalVariables.REPORT_FLAG:
                 test_case.push_to_db()
         except ImportError:
             logger.exception("Cannot import module {}".format(
@@ -138,7 +157,7 @@ def run_test(test, tier_name):
                         cmd, test_name))
         result = ft_utils.execute_command(cmd)
 
-    if CLEAN_FLAG:
+    if GlobalVariables.CLEAN_FLAG:
         cleanup()
     end = datetime.datetime.now()
     duration = (end - start).seconds
@@ -156,7 +175,7 @@ def run_test(test, tier_name):
                             "execution.")
                 # if it is a single test we don't print the whole results table
                 update_test_info(test_name, result_str, duration_str)
-                generate_report.main(EXECUTED_TEST_CASES)
+                generate_report.main(GlobalVariables.EXECUTED_TEST_CASES)
             logger.info("Execution exit value: %s" % OVERALL_RESULT)
             sys.exit(OVERALL_RESULT)
 
@@ -180,9 +199,8 @@ def run_tier(tier):
 
 
 def run_all(tiers):
-    global EXECUTED_TEST_CASES
     summary = ""
-    BUILD_TAG = os.getenv('BUILD_TAG')
+    BUILD_TAG = ft_constants.CI_BUILD_TAG
     if BUILD_TAG is not None and re.search("daily", BUILD_TAG) is not None:
         CI_LOOP = "daily"
     else:
@@ -199,28 +217,26 @@ def run_all(tiers):
                            tier.get_test_names()))
 
     logger.info("Tests to be executed:%s" % summary)
-    EXECUTED_TEST_CASES = generate_report.init(tiers_to_run)
+    GlobalVariables.EXECUTED_TEST_CASES = generate_report.init(tiers_to_run)
     for tier in tiers_to_run:
         run_tier(tier)
 
-    generate_report.main(EXECUTED_TEST_CASES)
+    generate_report.main(GlobalVariables.EXECUTED_TEST_CASES)
 
 
 def main():
-    global CLEAN_FLAG
-    global REPORT_FLAG
 
-    CI_INSTALLER_TYPE = os.getenv('INSTALLER_TYPE')
-    CI_SCENARIO = os.getenv('DEPLOY_SCENARIO')
+    CI_INSTALLER_TYPE = ft_constants.CI_INSTALLER_TYPE
+    CI_SCENARIO = ft_constants.CI_SCENARIO
 
-    file = ft_utils.get_testcases_file()
+    file = ft_constants.FUNCTEST_TESTCASES_YAML
     _tiers = tb.TierBuilder(CI_INSTALLER_TYPE, CI_SCENARIO, file)
 
     if args.noclean:
-        CLEAN_FLAG = False
+        GlobalVariables.CLEAN_FLAG = False
 
     if args.report:
-        REPORT_FLAG = True
+        GlobalVariables.REPORT_FLAG = True
 
     if args.test:
         source_rc_file()
@@ -242,8 +258,9 @@ def main():
     else:
         run_all(_tiers)
 
-    logger.info("Execution exit value: %s" % OVERALL_RESULT)
-    sys.exit(OVERALL_RESULT)
+    logger.info("Execution exit value: %s" % GlobalVariables.OVERALL_RESULT)
+    sys.exit(GlobalVariables.OVERALL_RESULT)
+
 
 if __name__ == '__main__':
     main()
diff --git a/functest/ci/testcases.yaml b/functest/ci/testcases.yaml
index 195108b4..a5ddcf23 100644..100755
--- a/functest/ci/testcases.yaml
+++ b/functest/ci/testcases.yaml
@@ -151,7 +151,7 @@ tiers:
                 dependencies:
                     installer: '(fuel)|(apex)'
                     scenario: 'bgpvpn'
-                 run:
+                run:
                     module: 'functest.opnfv_tests.features.sdnvpn'
                     class: 'SDNVPN'
 
diff --git a/functest/ci/tier_builder.py b/functest/ci/tier_builder.py
index e1c3e49e..e1c3e49e 100644..100755
--- a/functest/ci/tier_builder.py
+++ b/functest/ci/tier_builder.py
diff --git a/functest/ci/tier_handler.py b/functest/ci/tier_handler.py
index 1eadfba5..1eadfba5 100644..100755
--- a/functest/ci/tier_handler.py
+++ b/functest/ci/tier_handler.py