Add CORS (#270)

* Extract flask setup method

* Remove venv caching

* Add CORS

makefile

@@ -3,12 +3,9 @@ PY_ENV ?= ./venv
 .PHONY: venv tests
 default: ci
 
-$(PY_ENV)/requirements.txt.out: requirements.txt requirements-dev.txt
-	if [ ! -d $(PY_ENV) ]; then python3 -m venv $(PY_ENV) && $(PY_ENV)/bin/pip install -U pip wheel | tee $(PY_ENV)/requirements.txt.out; fi
-	$(PY_ENV)/bin/pip install -r requirements.txt | tee $(PY_ENV)/requirements.txt.out
-	$(PY_ENV)/bin/pip install -r requirements-dev.txt | tee $(PY_ENV)/requirements.txt.out
-
-venv: $(PY_ENV)/requirements.txt.out
+venv: requirements.txt requirements-dev.txt
+	if [ ! -d $(PY_ENV) ]; then python3 -m venv $(PY_ENV) && $(PY_ENV)/bin/pip install -U pip wheel; fi
+	$(PY_ENV)/bin/pip install -r requirements.txt -r requirements-dev.txt
 
 tests: venv
 	LOKOLE_LOG_LEVEL=CRITICAL $(PY_ENV)/bin/coverage run -m nose2 -v && \

opwen_email_server/integration/wsgi.py

@@ -2,6 +2,8 @@
 
 from applicationinsights.flask.ext import AppInsights
 from connexion import App
+from flask import Flask
+from flask_cors import CORS
 
 from opwen_email_server import config
 
@@ -18,14 +20,20 @@ def build_app(apis, host=_host, port=_port, ui=_ui):
     for api in apis:
         app.add_api(api)
 
-    app.app.config['APPINSIGHTS_INSTRUMENTATIONKEY'] = config.APPINSIGHTS_KEY
-    app.app.config['APPINSIGHTS_ENDPOINT_URI'] = config.APPINSIGHTS_HOST
-    app.app.config['APPINSIGHTS_DISABLE_TRACE_LOGGING'] = True
-    AppInsights(app.app)
+    _configure_flask(app.app)
 
     return app
 
 
+def _configure_flask(app: Flask):
+    app.config['APPINSIGHTS_INSTRUMENTATIONKEY'] = config.APPINSIGHTS_KEY
+    app.config['APPINSIGHTS_ENDPOINT_URI'] = config.APPINSIGHTS_HOST
+    app.config['APPINSIGHTS_DISABLE_TRACE_LOGGING'] = True
+    AppInsights(app)
+
+    CORS(app)
+
+
 def _cli():
     from argparse import ArgumentParser
     from argparse import FileType

requirements.txt

@@ -1,9 +1,11 @@
+Flask==1.1.1
+Flask-Cors==3.0.8
 Pillow==6.2.1
 apache-libcloud==2.6.0
 applicationinsights==0.11.9
 beautifulsoup4==4.8.1
 cached-property==1.5.1
-connexion[flask,swagger-ui]==2.4.0
+connexion[swagger-ui]==2.4.0
 environs==6.1.0
 msgpack==0.6.2
 python-http-client==3.2.1