Moving validation to server start. (#563)

lemur/factory.py

@@ -19,7 +19,6 @@ from logging.handlers import RotatingFileHandler
 
 from flask import Flask
 from lemur.common.health import mod as health
-from lemur.common.utils import validate_conf
 from lemur.extensions import db, migrate, principal, smtp_mail, metrics
 
 
@@ -29,16 +28,6 @@ DEFAULT_BLUEPRINTS = (
 
 API_VERSION = 1
 
-REQUIRED_VARIABLES = [
-    'LEMUR_SECURITY_TEAM_EMAIL',
-    'LEMUR_DEFAULT_ORGANIZATIONAL_UNIT',
-    'LEMUR_DEFAULT_ORGANIZATION',
-    'LEMUR_DEFAULT_LOCATION',
-    'LEMUR_DEFAULT_COUNTRY',
-    'LEMUR_DEFAULT_STATE',
-    'SQLALCHEMY_DATABASE_URI'
-]
-
 
 def create_app(app_name=None, blueprints=None, config=None):
     """
@@ -104,7 +93,6 @@ def configure_app(app, config=None):
     # respect the config first
     if config and config != 'None':
         app.config.from_object(from_file(config))
-
     else:
         try:
             app.config.from_envvar("LEMUR_CONF")
@@ -115,8 +103,6 @@ def configure_app(app, config=None):
             else:
                 app.config.from_object(from_file(os.path.join(os.path.dirname(os.path.realpath(__file__)), 'default.conf.py')))
 
-    validate_conf(app, REQUIRED_VARIABLES)
-
 
 def configure_extensions(app):
     """

lemur/manage.py

@@ -32,6 +32,8 @@ from lemur.notifications import service as notification_service
 from lemur.certificates.verify import verify_string
 from lemur.sources import service as source_service
 
+from lemur.common.utils import validate_conf
+
 from lemur import create_app
 
 # Needed to be imported so that SQLAlchemy create_all can find our models
@@ -51,12 +53,21 @@ manager.add_option('-c', '--config', dest='config')
 
 migrate = Migrate(create_app)
 
+REQUIRED_VARIABLES = [
+    'LEMUR_SECURITY_TEAM_EMAIL',
+    'LEMUR_DEFAULT_ORGANIZATIONAL_UNIT',
+    'LEMUR_DEFAULT_ORGANIZATION',
+    'LEMUR_DEFAULT_LOCATION',
+    'LEMUR_DEFAULT_COUNTRY',
+    'LEMUR_DEFAULT_STATE',
+    'SQLALCHEMY_DATABASE_URI'
+]
+
 KEY_LENGTH = 40
 DEFAULT_CONFIG_PATH = '~/.lemur/lemur.conf.py'
 DEFAULT_SETTINGS = 'lemur.conf.server'
 SETTINGS_ENVVAR = 'LEMUR_CONF'
 
-
 CONFIG_TEMPLATE = """
 # This is just Python which means you can inherit and tweak settings
 
@@ -182,9 +193,9 @@ def generate_settings():
     output = CONFIG_TEMPLATE.format(
         # we use Fernet.generate_key to make sure that the key length is
         # compatible with Fernet
-        encryption_key=Fernet.generate_key(),
-        secret_token=base64.b64encode(os.urandom(KEY_LENGTH)),
-        flask_secret_key=base64.b64encode(os.urandom(KEY_LENGTH)),
+        encryption_key=Fernet.generate_key().decode('utf-8'),
+        secret_token=base64.b64encode(os.urandom(KEY_LENGTH)).decode('utf-8'),
+        flask_secret_key=base64.b64encode(os.urandom(KEY_LENGTH)).decode('utf-8'),
     )
 
     return output
@@ -402,6 +413,11 @@ class LemurServer(Command):
         from gunicorn.app.wsgiapp import WSGIApplication
 
         app = WSGIApplication()
+
+        # run startup tasks on a app like object
+        pre_app = create_app(kwargs.get('config'))
+        validate_conf(pre_app, REQUIRED_VARIABLES)
+
         app.app_uri = 'lemur:create_app(config="{0}")'.format(kwargs.get('config'))
 
         return app.run()
@@ -417,6 +433,7 @@ def create_config(config_path=None):
 
     config_path = os.path.expanduser(config_path)
     dir = os.path.dirname(config_path)
+
     if not os.path.exists(dir):
         os.makedirs(dir)