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>

4 files changed, 43 insertions, 54 deletions

diff --git a/functest/cli/commands/cli_env.py b/functest/cli/commands/cli_env.py
index d331cc15..9f793e71 100644
--- a/functest/cli/commands/cli_env.py
+++ b/functest/cli/commands/cli_env.py
@@ -13,9 +13,7 @@ import click
 import git
 
 import functest.utils.functest_utils as ft_utils
-
-ENV_FILE = "/home/opnfv/functest/conf/env_active"
-FUNCTEST_REPO = ft_utils.FUNCTEST_REPO
+import functest.utils.functest_constants as ft_constants
 
 
 class CliEnv:
@@ -30,44 +28,45 @@ class CliEnv:
                                "it again? [y|n]\n")
             while True:
                 if answer.lower() in ["y", "yes"]:
-                    os.remove(ENV_FILE)
+                    os.remove(ft_constants.ENV_FILE)
                     break
                 elif answer.lower() in ["n", "no"]:
                     return
                 else:
                     answer = raw_input("Invalid answer. Please type [y|n]\n")
 
-        cmd = ("python %s/functest/ci/prepare_env.py start" % FUNCTEST_REPO)
+        cmd = ("python %s/functest/ci/prepare_env.py start" %
+               ft_constants.FUNCTEST_REPO_DIR)
         ft_utils.execute_command(cmd)
 
     def show(self):
-        CI_INSTALLER_TYPE = os.getenv('INSTALLER_TYPE')
+        CI_INSTALLER_TYPE = ft_constants.CI_INSTALLER_TYPE
         if CI_INSTALLER_TYPE is None:
             CI_INSTALLER_TYPE = "Unknown"
-        CI_INSTALLER_IP = os.getenv('INSTALLER_IP')
+        CI_INSTALLER_IP = ft_constants.CI_INSTALLER_IP
         if CI_INSTALLER_IP is None:
             CI_INSTALLER_IP = "Unknown"
         CI_INSTALLER = ("%s, %s" % (CI_INSTALLER_TYPE, CI_INSTALLER_IP))
 
-        CI_SCENARIO = os.getenv('DEPLOY_SCENARIO')
+        CI_SCENARIO = ft_constants.CI_SCENARIO
         if CI_SCENARIO is None:
             CI_SCENARIO = "Unknown"
 
-        CI_NODE = os.getenv('NODE_NAME')
+        CI_NODE = ft_constants.CI_NODE
         if CI_NODE is None:
             CI_NODE = "Unknown"
 
-        repo = git.Repo(FUNCTEST_REPO)
+        repo = git.Repo(ft_constants.FUNCTEST_REPO_DIR)
         branch = repo.head.reference
         GIT_BRANCH = branch.name
         GIT_HASH = branch.commit.hexsha
 
-        CI_BUILD_TAG = os.getenv('BUILD_TAG')
+        CI_BUILD_TAG = ft_constants.CI_BUILD_TAG
         if CI_BUILD_TAG is not None:
             CI_BUILD_TAG = CI_BUILD_TAG.lstrip(
                 "jenkins-").lstrip("functest").lstrip("-")
 
-        CI_DEBUG = os.getenv('CI_DEBUG')
+        CI_DEBUG = ft_constants.CI_DEBUG
         if CI_DEBUG is None:
             CI_DEBUG = "false"
 
@@ -93,7 +92,7 @@ class CliEnv:
 
     def status(self, verbose=True):
         ret_val = 0
-        if not os.path.isfile(ENV_FILE):
+        if not os.path.isfile(ft_constants.ENV_FILE):
             if verbose:
                 click.echo("Functest environment is not installed.\n")
             ret_val = 1
diff --git a/functest/cli/commands/cli_os.py b/functest/cli/commands/cli_os.py
index 2530b5f2..140be191 100644
--- a/functest/cli/commands/cli_os.py
+++ b/functest/cli/commands/cli_os.py
@@ -15,19 +15,17 @@ import click
 import functest.utils.functest_utils as ft_utils
 import functest.utils.openstack_clean as os_clean
 import functest.utils.openstack_snapshot as os_snapshot
+import functest.utils.functest_constants as ft_constants
 
 
-FUNCTEST_CONF_DIR = \
-    ft_utils.get_functest_config('general.directories.dir_functest_conf')
-RC_FILE = os.getenv('creds')
-OS_SNAPSHOT_FILE = \
-    ft_utils.get_functest_config("general.openstack.snapshot_file")
+OPENSTACK_RC_FILE = ft_constants.OPENSTACK_CREDS
+OPENSTACK_SNAPSHOT_FILE = ft_constants.OPENSTACK_SNAPSHOT_FILE
 
 
 class CliOpenStack:
 
     def __init__(self):
-        self.os_auth_url = os.getenv('OS_AUTH_URL')
+        self.os_auth_url = ft_constants.OS_AUTH_URL
         self.endpoint_ip = None
         self.endpoint_port = None
         if self.os_auth_url is not None:
@@ -51,7 +49,7 @@ class CliOpenStack:
                 click.echo("{}={}".format(key, value))
 
     def fetch_credentials(self):
-        if os.path.isfile(RC_FILE):
+        if os.path.isfile(OPENSTACK_RC_FILE):
             answer = raw_input("It seems the RC file is already present. "
                                "Do you want to overwrite it? [y|n]\n")
             while True:
@@ -62,29 +60,30 @@ class CliOpenStack:
                 else:
                     answer = raw_input("Invalid answer. Please type [y|n]\n")
 
-        CI_INSTALLER_TYPE = os.getenv('INSTALLER_TYPE')
+        CI_INSTALLER_TYPE = ft_constants.CI_INSTALLER_TYPE
         if CI_INSTALLER_TYPE is None:
             click.echo("The environment variable 'INSTALLER_TYPE' is not"
                        "defined. Please export it")
-        CI_INSTALLER_IP = os.getenv('INSTALLER_IP')
+        CI_INSTALLER_IP = ft_constants.CI_INSTALLER_IP
         if CI_INSTALLER_IP is None:
             click.echo("The environment variable 'INSTALLER_IP' is not"
                        "defined. Please export it")
-        cmd = ("/home/opnfv/repos/releng/utils/fetch_os_creds.sh "
-               "-d %s -i %s -a %s"
-               % (RC_FILE, CI_INSTALLER_TYPE, CI_INSTALLER_IP))
+        cmd = ft_constants.REPOS_DIR + \
+            ("/releng/utils/fetch_os_creds.sh "
+             "-d %s -i %s -a %s"
+             % (OPENSTACK_RC_FILE, CI_INSTALLER_TYPE, CI_INSTALLER_IP))
         click.echo("Fetching credentials from installer node '%s' with IP=%s.."
                    % (CI_INSTALLER_TYPE, CI_INSTALLER_IP))
         ft_utils.execute_command(cmd, verbose=False)
 
     def check(self):
         self.ping_endpoint()
-        cmd = ft_utils.FUNCTEST_REPO + "/functest/ci/check_os.sh"
+        cmd = ft_constants.FUNCTEST_REPO_DIR + "/functest/ci/check_os.sh"
         ft_utils.execute_command(cmd, verbose=False)
 
     def snapshot_create(self):
         self.ping_endpoint()
-        if os.path.isfile(OS_SNAPSHOT_FILE):
+        if os.path.isfile(OPENSTACK_SNAPSHOT_FILE):
             answer = raw_input("It seems there is already an OpenStack "
                                "snapshot. Do you want to overwrite it with "
                                "the current OpenStack status? [y|n]\n")
@@ -100,18 +99,18 @@ class CliOpenStack:
         os_snapshot.main()
 
     def snapshot_show(self):
-        if not os.path.isfile(OS_SNAPSHOT_FILE):
+        if not os.path.isfile(OPENSTACK_SNAPSHOT_FILE):
             click.echo("There is no OpenStack snapshot created. To create "
                        "one run the command "
                        "'functest openstack snapshot-create'")
             return
-        with open(OS_SNAPSHOT_FILE, 'r') as yaml_file:
+        with open(OPENSTACK_SNAPSHOT_FILE, 'r') as yaml_file:
             click.echo("\n%s"
                        % yaml_file.read())
 
     def clean(self):
         self.ping_endpoint()
-        if not os.path.isfile(OS_SNAPSHOT_FILE):
+        if not os.path.isfile(OPENSTACK_SNAPSHOT_FILE):
             click.echo("Not possible to clean OpenStack without a snapshot. "
                        "This could cause problems. "
                        "Run first the command "
diff --git a/functest/cli/commands/cli_testcase.py b/functest/cli/commands/cli_testcase.py
index da78ae9c..efe177d5 100644
--- a/functest/cli/commands/cli_testcase.py
+++ b/functest/cli/commands/cli_testcase.py
@@ -16,20 +16,16 @@ import click
 import functest.ci.tier_builder as tb
 import functest.utils.functest_utils as ft_utils
 import functest.utils.functest_vacation as vacation
-
-
-FUNCTEST_CONF_DIR = \
-    ft_utils.get_functest_config('general.directories.dir_functest_conf')
-ENV_FILE = FUNCTEST_CONF_DIR + "/env_active"
-FUNCTEST_REPO = ft_utils.FUNCTEST_REPO
+import functest.utils.functest_constants as ft_constants
 
 
 class CliTestcase:
 
     def __init__(self):
-        CI_INSTALLER_TYPE = os.getenv('INSTALLER_TYPE')
-        CI_SCENARIO = os.getenv('DEPLOY_SCENARIO')
-        testcases = ft_utils.get_testcases_file()
+        CI_INSTALLER_TYPE = ft_constants.CI_INSTALLER_TYPE
+        CI_SCENARIO = ft_constants.CI_SCENARIO
+        testcases = ft_constants.FUNCTEST_TESTCASES_YAML
+
         self.tiers = tb.TierBuilder(CI_INSTALLER_TYPE, CI_SCENARIO, testcases)
 
     def list(self):
@@ -50,14 +46,14 @@ class CliTestcase:
     def run(self, testname, noclean=False):
         if testname == 'vacation':
             vacation.main()
-        elif not os.path.isfile(ENV_FILE):
+        elif not os.path.isfile(ft_constants.ENV_FILE):
             click.echo("Functest environment is not ready. "
                        "Run first 'functest env prepare'")
         else:
             if noclean:
                 cmd = ("python %s/functest/ci/run_tests.py "
-                       "-n -t %s" % (FUNCTEST_REPO, testname))
+                       "-n -t %s" % (ft_constants.FUNCTEST_REPO_DIR, testname))
             else:
                 cmd = ("python %s/functest/ci/run_tests.py "
-                       "-t %s" % (FUNCTEST_REPO, testname))
+                       "-t %s" % (ft_constants.FUNCTEST_REPO_DIR, testname))
             ft_utils.execute_command(cmd)
diff --git a/functest/cli/commands/cli_tier.py b/functest/cli/commands/cli_tier.py
index fa2de587..9da51072 100644
--- a/functest/cli/commands/cli_tier.py
+++ b/functest/cli/commands/cli_tier.py
@@ -15,20 +15,15 @@ import click
 
 import functest.ci.tier_builder as tb
 import functest.utils.functest_utils as ft_utils
-
-
-FUNCTEST_CONF_DIR = \
-    ft_utils.get_functest_config('general.directories.dir_functest_conf')
-ENV_FILE = FUNCTEST_CONF_DIR + "/env_active"
-FUNCTEST_REPO = ft_utils.FUNCTEST_REPO
+import functest.utils.functest_constants as ft_constants
 
 
 class CliTier:
 
     def __init__(self):
-        CI_INSTALLER_TYPE = os.getenv('INSTALLER_TYPE')
-        CI_SCENARIO = os.getenv('DEPLOY_SCENARIO')
-        testcases = ft_utils.get_testcases_file()
+        CI_INSTALLER_TYPE = ft_constants.CI_INSTALLER_TYPE
+        CI_SCENARIO = ft_constants.CI_SCENARIO
+        testcases = ft_constants.FUNCTEST_TESTCASES_YAML
         self.tiers = tb.TierBuilder(CI_INSTALLER_TYPE, CI_SCENARIO, testcases)
 
     def list(self):
@@ -60,14 +55,14 @@ class CliTier:
             click.echo("Test cases in tier '%s':\n %s\n" % (tiername, tests))
 
     def run(self, tiername, noclean=False):
-        if not os.path.isfile(ENV_FILE):
+        if not os.path.isfile(ft_constants.ENV_FILE):
             click.echo("Functest environment is not ready. "
                        "Run first 'functest env prepare'")
         else:
             if noclean:
                 cmd = ("python %s/functest/ci/run_tests.py "
-                       "-n -t %s" % (FUNCTEST_REPO, tiername))
+                       "-n -t %s" % (ft_constants.FUNCTEST_REPO_DIR, tiername))
             else:
                 cmd = ("python %s/functest/ci/run_tests.py "
-                       "-t %s" % (FUNCTEST_REPO, tiername))
+                       "-t %s" % (ft_constants.FUNCTEST_REPO_DIR, tiername))
             ft_utils.execute_command(cmd)