[ADD] web: warning on incompatible databases

If a database is not an Odoo database or is not the same version
Closes #15171

addons/web/controllers/main.py

@@ -614,6 +614,7 @@ class Database(http.Controller):
         d['databases'] = []
         try:
             d['databases'] = http.db_list()
+            d['incompatible_databases'] = odoo.service.db.list_db_incompatible(d['databases'])
         except odoo.exceptions.AccessDenied:
             monodb = db_monodb()
             if monodb:

addons/web/views/database_manager.html

@@ -129,7 +129,10 @@
       {% if databases %}
         <div class="list-group">
           {% for db in databases %}
-          <a href="/web?db={{ db }}" class="list-group-item">
+          <a href="/web?db={{ db }}" class="list-group-item" >
+            {% if db in incompatible_databases %}
+              <i class="icon fa fa-warning pull-right text-warning" title="This database may not be compatible"></i>
+            {% endif %}
             {{ db }}
             {% if manage %}
             <div class="text-right pull-right">

odoo/service/db.py

@@ -21,6 +21,8 @@ from odoo.exceptions import UserError
 import odoo.release
 import odoo.sql_db
 import odoo.tools
+from odoo.sql_db import db_connect
+from odoo.release import version_info
 
 _logger = logging.getLogger(__name__)
 
@@ -342,6 +344,28 @@ def list_dbs(force=False):
     res.sort()
     return res
 
+def list_db_incompatible(databases):
+    """"Check a list of databases if they are compatible with this version of Odoo
+
+        :param databases: A list of existing Postgresql databases
+        :return: A list of databases that are incompatible
+    """
+    incompatible_databases = []
+    server_version = '.'.join(map(str, version_info[:2]))
+    for database_name in databases:
+        with closing(db_connect(database_name).cursor()) as cr:
+            cr.execute("SELECT 1 FROM information_schema.tables WHERE table_name='ir_module_module'")
+            if cr.fetchone():
+                cr.execute("SELECT latest_version FROM ir_module_module WHERE name=%s", ('base',))
+                base_version = cr.fetchone()[0]
+                # e.g. 10.saas~15
+                if '.'.join(base_version.split('.')[:2]) != server_version:
+                    incompatible_databases.append(database_name)
+            else:
+                incompatible_databases.append(database_name)
+    return incompatible_databases
+
+
 def exp_list(document=False):
     if not odoo.tools.config['list_db']:
         raise odoo.exceptions.AccessDenied()