Add stack files and load test scenario

* The stack is deployed with docker swarm.
* The test scenarios are running with k6.
* Remove old load script bin/createLoad.
* Remove endpoints used exclusively by the old script.

README.md

@@ -307,21 +307,23 @@ Sharding is done at the application level, more specifically in the
 [repository](/src/ConnectFour/Port/Adapter/Persistence/Repository/DoctrineJsonGameRepository.php).
 The application uses schema-based sharding and is aware of all existing logical shards,
 while it's only aware of one physical connection. To actually forward queries to separate physical shards,
-a proxy such as ProxySQL can be used. An example will be added with
-[#118](https://github.com/marein/php-gaming-website/issues/118).  
+the application aims to use ProxySQL as a sidecar. An example can be found in the
+[load test environment](/deploy/load-test).  
 __Example for chat__: Currently there shouldn't be queries that span multiple chats.
 To invoke a chat operation (either writing or reading) we exclusively need a chat id.
 As in connect four context, we can use
 [sharding](https://en.wikipedia.org/wiki/Shard_(database_architecture))
 for the chat context, where the chat id is the sharding key.
 
-You may have seen that all contexts uses only one MySQL and one Redis instance.
-This could be different for the production environment depending on the scale.
-For this reason, different databases can be configured for the different contexts. Have a look at the
-[configuration file](/.env).
-We can split this even further.
-For example, we can create a Redis instance per query model in the "Connect Four" context.
-Of course, the code must be adapted. Whether it's worth it depends also on the scale.
+In development, all contexts use only one MySQL and one Redis instance.
+That is adjustable via environment variables, see
+[here](/.env).
+The
+[load test environment](/deploy/load-test)
+separates those storages. Even though in this example the MySQL servers point to the same host,
+each context still uses a separate MySQL server. This works because the application itself talks to a
+[ProxySQL sidecar](/deploy/load-test/stack/proxysql-sidecar.yml),
+which forwards the queries to the MySQL server of the respective context.
 
 ## Chosen technologies
 

config/web-interface/routing.yml

@@ -98,9 +98,3 @@ move:
     methods: [POST]
     controller: web-interface.connect-four-controller::moveAction
     defaults: { _format: json }
-
-game_json:
-    path: /api/connect-four/games/{gameId}
-    methods: [GET]
-    controller: web-interface.connect-four-controller::showAction
-    defaults: { _format: json }

deploy/load-test/scenario/play-connect-four.js

@@ -0,0 +1,48 @@
+import http from 'k6/http';
+
+const baseUrl = __ENV.BASE_URL;
+const headers = {'Origin': baseUrl};
+const jarPlayerOne = new http.CookieJar();
+const jarPlayerTwo = new http.CookieJar();
+
+export default function () {
+    const gameId = open(jarPlayerOne);
+    join(jarPlayerTwo, gameId);
+    move(jarPlayerOne, gameId, 1);
+    move(jarPlayerTwo, gameId, 2);
+    move(jarPlayerOne, gameId, 3);
+    move(jarPlayerTwo, gameId, 4);
+    move(jarPlayerOne, gameId, 5);
+    move(jarPlayerTwo, gameId, 6);
+    move(jarPlayerOne, gameId, 7);
+    move(jarPlayerTwo, gameId, 1);
+    move(jarPlayerOne, gameId, 2);
+    move(jarPlayerTwo, gameId, 3);
+    move(jarPlayerOne, gameId, 4);
+    move(jarPlayerTwo, gameId, 5);
+    move(jarPlayerOne, gameId, 6);
+    move(jarPlayerTwo, gameId, 7);
+    move(jarPlayerOne, gameId, 1);
+    move(jarPlayerTwo, gameId, 2);
+    move(jarPlayerOne, gameId, 3);
+    move(jarPlayerTwo, gameId, 4);
+    move(jarPlayerOne, gameId, 5);
+    move(jarPlayerTwo, gameId, 6);
+    move(jarPlayerOne, gameId, 7);
+    move(jarPlayerTwo, gameId, 1);
+}
+
+function open(jar) {
+    let url = `${baseUrl}/api/connect-four/games/open`;
+    return http.post(url, {}, {jar, headers}).json().gameId;
+}
+
+function join(jar, gameId) {
+    let url = `${baseUrl}/api/connect-four/games/${gameId}/join`;
+    return http.post(url, {}, {jar, headers});
+}
+
+function move(jar, gameId, column) {
+    let url = `${baseUrl}/api/connect-four/games/${gameId}/move`;
+    return http.post(url, {column}, {jar, headers});
+}

deploy/load-test/stack/app.env

@@ -0,0 +1,24 @@
+APP_ENVIRONMENT=prod
+APP_KERNEL_SECRET=ThisTokenIsNotSoSecretChangeIt
+APP_WAIT_FOR=unix:///var/run/proxysql/proxysql.sock,chat-mysql:3306,connect-four-mysql-1:3306,connect-four-mysql-2:3306,connect-four-mysql-3:3306,connect-four-mysql-4:3306,connect-four-mysql-5:3306,identity-mysql:3306,chat-redis:6379,connect-four-redis:6379,web-interface-redis:6379,rabbitmq:5672,nchan:81
+APP_RABBIT_MQ_DSN=amqp://guest:guest@rabbitmq:5672?heartbeat=60&prefetchCount=30
+
+APP_CHAT_DOCTRINE_DBAL_URL=mysqli://root:password@localhost/chat?persistent=1&unix_socket=/var/run/proxysql/proxysql.sock
+APP_CHAT_RUN_MIGRATIONS=1
+APP_CHAT_PREDIS_CLIENT_URL=redis://chat-redis:6379?persistent=1
+
+APP_CONNECT_FOUR_DOCTRINE_DBAL_URL=mysqli://root:password@localhost/%env(APP_CONNECT_FOUR_DOCTRINE_DBAL_DATABASE)%?persistent=1&unix_socket=/var/run/proxysql/proxysql.sock
+APP_CONNECT_FOUR_DOCTRINE_DBAL_DATABASE=connect-four-1
+APP_CONNECT_FOUR_DOCTRINE_DBAL_SHARDS=connect-four-1,connect-four-2,connect-four-3,connect-four-4,connect-four-5
+APP_CONNECT_FOUR_RUN_MIGRATIONS=1
+APP_CONNECT_FOUR_PREDIS_CLIENT_URL=redis://connect-four-redis:6379?persistent=1
+
+APP_IDENTITY_DOCTRINE_DBAL_URL=mysqli://root:password@localhost/identity?persistent=1&unix_socket=/var/run/proxysql/proxysql.sock
+APP_IDENTITY_RUN_MIGRATIONS=1
+
+APP_WEB_INTERFACE_PREDIS_CLIENT_URL=redis://web-interface-redis:6379?persistent=1
+APP_WEB_INTERFACE_NCHAN_BASE_URL=http://nchan:81
+APP_WEB_INTERFACE_PUBLISH_TO_BROWSER_SHARDS=5
+
+PHP_FPM_PM=static
+PHP_FPM_PM_MAX_CHILDREN=96

deploy/load-test/stack/chat/app.yml

@@ -0,0 +1,27 @@
+version: '3.4'
+
+services:
+    chat-follow-event-store:
+        image: marein/php-gaming-website:php-fpm
+        command: bin/console chat:follow-event-store pointer all
+        env_file: ../app.env
+        volumes:
+            - proxysql.sock:/var/run/proxysql
+        deploy:
+            placement:
+                constraints:
+                    - "node.labels.long-running==1"
+    chat-command:
+        image: marein/php-gaming-website:php-fpm
+        command: bin/console gaming:consume-messages chat.command -r 3
+        env_file: ../app.env
+        volumes:
+            - proxysql.sock:/var/run/proxysql
+        deploy:
+            replicas: 5
+            placement:
+                constraints:
+                    - "node.labels.long-running==1"
+
+volumes:
+    proxysql.sock: