2.5.0 dev (#1453)

2.5.0 / 2020-06-02
==================

**General**
* Use a session invalidation strategy inspired by Django. Newly generated user sessions will now include a HMAC of the user's password. When the user's password is changed by someone other than the user the previous HMACs will no longer be valid and the user will be logged out when they next attempt to perform an action.
* A user and team's place, and score are now cached and invalidated on score changes.

**API**
* Add `/api/v1/challenges?view=admin` to allow admin users to see all challenges regardless of their visibility state
* Add `/api/v1/users?view=admin` to allow admin users to see all users regardless of their hidden/banned state
* Add `/api/v1/teams?view=admin` to allow admin users to see all teams regardless of their hidden/banned state
* The scoreboard endpoints `/api/v1/scoreboard` & `/api/v1/scoreboard/top/[count]` should now be more performant because score and place for Users/Teams are now cached

**Deployment**
* `docker-compose` now provides a basic nginx configuration and deploys nginx on port 80

**Miscellaneous**
* The `get_config` and `get_page` config utilities now use SQLAlchemy Core instead of SQLAlchemy ORM for slight speedups
* Update Flask-Migrate to 2.5.3 and regenerate the migration environment. Fixes using `%` signs in database passwords.

migrations/env.py

@@ -1,30 +1,31 @@
 from __future__ import with_statement
 
 import logging
+from logging.config import fileConfig
 
-# from logging.config import fileConfig
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
 
 from alembic import context
 
-# add your model's MetaData object here
-# for 'autogenerate' support
-# from myapp import mymodel
-# target_metadata = mymodel.Base.metadata
-from flask import current_app
-from sqlalchemy import engine_from_config, pool
-
 # this is the Alembic Config object, which provides
 # access to the values within the .ini file in use.
 config = context.config
 
 # Interpret the config file for Python logging.
 # This line sets up loggers basically.
-# http://stackoverflow.com/questions/42427487/using-alembic-config-main-redirects-log-output
-# fileConfig(config.config_file_name)
+fileConfig(config.config_file_name, disable_existing_loggers=False)
 logger = logging.getLogger("alembic.env")
 
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+from flask import current_app
+
 config.set_main_option(
-    "sqlalchemy.url", current_app.config.get("SQLALCHEMY_DATABASE_URI")
+    "sqlalchemy.url",
+    str(current_app.extensions["migrate"].db.engine.url).replace("%", "%%"),
 )
 target_metadata = current_app.extensions["migrate"].db.metadata
 
@@ -47,7 +48,7 @@ def run_migrations_offline():
 
     """
     url = config.get_main_option("sqlalchemy.url")
-    context.configure(url=url)
+    context.configure(url=url, target_metadata=target_metadata, literal_binds=True)
 
     with context.begin_transaction():
         context.run_migrations()
@@ -63,7 +64,7 @@ def run_migrations_online():
 
     # this callback is used to prevent an auto-migration from being generated
     # when there are no changes to the schema
-    # reference: http://alembic.readthedocs.org/en/latest/cookbook.html
+    # reference: http://alembic.zzzcomputing.com/en/latest/cookbook.html
     def process_revision_directives(context, revision, directives):
         if getattr(config.cmd_opts, "autogenerate", False):
             script = directives[0]
@@ -71,26 +72,22 @@ def run_migrations_online():
                 directives[:] = []
                 logger.info("No changes in schema detected.")
 
-    engine = engine_from_config(
+    connectable = engine_from_config(
         config.get_section(config.config_ini_section),
         prefix="sqlalchemy.",
         poolclass=pool.NullPool,
     )
 
-    connection = engine.connect()
-    context.configure(
-        connection=connection,
-        target_metadata=target_metadata,
-        compare_type=True,
-        process_revision_directives=process_revision_directives,
-        **current_app.extensions["migrate"].configure_args
-    )
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection,
+            target_metadata=target_metadata,
+            process_revision_directives=process_revision_directives,
+            **current_app.extensions["migrate"].configure_args
+        )
 
-    try:
         with context.begin_transaction():
             context.run_migrations()
-    finally:
-        connection.close()
 
 
 if context.is_offline_mode():