Generate the SSO config from the environment variables

The generator requires Python 3 and pyyaml

Signed-off-by: Andrej Shadura <andrew.shadura@collabora.co.uk>

Dockerfile

@@ -43,7 +43,7 @@ RUN \
  sed -i 's/stable/stretch/g' /etc/apt/sources.list \
  && echo "obs-api obs-api/dbconfig-install boolean false" | debconf-set-selections \
  && apt-get update \
- && apt-get -y install locales supervisor curl ca-certificates
+ && apt-get -y install locales supervisor curl ca-certificates python3-yaml
 
 COPY --from=builder /tmp/obs-api*.deb /tmp
 

docker/configure-sso.py

+#!/usr/bin/python3
+
+import yaml
+import os
+
+CONFIG_LOCATION='/usr/share/obs/api/config/auth.yml'
+
+def parse_method(method: str):
+    for k, v in os.environ.items():
+        prefix = 'OBS_SSO_' + method.upper().replace('-', '_') + '_'
+        if k.startswith(prefix):
+            opt = k.replace(prefix, '').lower()
+            yield opt, v
+
+def reorder_options(options: dict):
+    new_options = {}
+    client_options = {}
+    for k, v in options.items():
+        if k.startswith('client_options_'):
+            client_options[k.replace('client_options_', '')] = v
+        else:
+            new_options[k] = v
+    if client_options:
+        new_options['client_options'] = client_options
+    return new_options
+
+def generate_yaml():
+    methods = os.environ['OBS_SSO_METHODS'].split()
+    config = {}
+    for method in methods:
+        options = reorder_options(dict(parse_method(method)))
+        config[method] = options
+    with open(CONFIG_LOCATION, 'w') as f:
+        yaml.safe_dump(config, stream=f)
+
+if __name__ == "__main__":
+    if os.environ.get('OBS_SSO_ENABLED') == 'true':
+        generate_yaml()

docker/docker-entrypoint.sh

@@ -5,6 +5,7 @@ rm -rfv /run/*
 mkdir -m a=rwxt /run/lock
 
 /opt/configure-db.sh
+/opt/configure-sso.py
 /opt/configure-app.sh
 
 /usr/bin/supervisord -n