made simple path change and added documentation pt 1

misc/Deployment.md

@@ -0,0 +1,43 @@
+# System deployment
+
+___
+
+## Prerequisites
+
+## Client
+
+## Database
+
+## Backend / Flask app
+
+In order to not have complicated and error-prone copying manoevers a direct deployment from the repo is used using git.
+
+### File structure
+
+### Steps
+
+1) Created a ssh-key for the user that does the installation on the server following the Github [instructions](https://docs.github.com/en/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent).
+2) Deploy generated key to the Github user account.
+3) In the shell, activate ssh-agent and add the key. For example:
+
+```bash
+eval ($ssh-agent)
+ssh-add ~/.ssh/od_ed25519
+```
+
+4) Change to deployment folder
+
+```bash
+cd /var/www/brecal_test
+```
+
+5) Perform sparse checkout on the Flask server subtree
+
+```bash
+git clone -n git@github.com:puls200/brecal.git <target_folder>
+cd <target_folder>
+git sparse-checkout set --no-cone src/server
+git checkout
+```
+
+6) Database credentials are stored outside the web root, we are using /var/www/secure. Here the file ```connection_data.json``` is placed, a different named copy for each instance.

src/server/BreCal/local_db.py

@@ -9,7 +9,7 @@ connection_pool = None
 def initPool():
     try:
 
-        config_path = './src/server/BreCal/connection_data.json'
+        config_path = '../../../../secure/connection_data_test.json'
         print (os.getcwd())
         if not os.path.exists(config_path):
             print ('cannot find ' + config_path)
@@ -31,7 +31,7 @@ def initPool():
         print(e)
 
 def getPoolConnection():
-    config_path = './src/server/BreCal/connection_data.json'
+    config_path = '../../../../secure/connection_data_test.json'
     f = open(config_path);
     connection_data = json.load(f)
     return mysql.connector.connect(**connection_data)