only add Authorization header if token exists (#6)

* only add Authorization header if token exists

This patch makes the database config "token" optional.
Users can either set it to an empty string or omit the token completely.
This is useful for DB-APIs that do not require authentication, and
therefore no token.

* pin dependency werkzeug to version 2.1.2

to workaround python-restx/flask-restx#460

* add git ignore file

build output and caches can be ignored by git

* downgrade werkzeug even further to 2.0.*

as suggested in python-restx/flask-restx#460 (comment)

ServiceDiscovery/.gitignore

@@ -0,0 +1,3 @@
+build/
+**/*.egg-info/
+**/__pycache__/

ServiceDiscovery/requirements.txt

@@ -1,3 +1,4 @@
+werkzeug==2.0.*
 Flask==2.1.2
 Flask-Cors==3.0.10
 flask-talisman==1.0.0
@@ -10,4 +11,4 @@ pandas==1.4.2
 numpy==1.22.4
 lxml==4.9.0
 PyGithub==1.55
-langdetect==1.0.9
+langdetect==1.0.9

ServiceDiscovery/servicediscovery/database/database_handler.py

@@ -30,7 +30,8 @@ def __init__(self):
         database_config = ConfigReader.read_config(section="database")
         self.scheme = database_config["scheme"]
         self.host = database_config["host"]
-        self.header = {"Authorization": f"Bearer {database_config['token']}"}
+        if database_config.get('token'):
+            self.header = {"Authorization": f"Bearer {database_config['token']}"}
         self.registry_endpoint = database_config["registry_endpoint"]
         self.services_endpoint = database_config["services_endpoint"]
         self.database_endpoint = f"{self.scheme}://{self.host}"