fix(mysql)!: look for *.sql files in the top-level schema directory (…

…#154)

* mysql service would assume that all the `*.sql` files in the directory, provided by `initialDatabases [{ schema = <directory>; … }]`, exists in a folder named [mysql-databases](https://github.com/juspay/services-flake/blob/291e7be83aa0f24b8e40fc61df4a895827788707/nix/mysql.nix#L239-L241), after this change it would just look for all the `*.sql` files in the top-level schema directory.
* add tests

nix/default.nix

@@ -7,7 +7,7 @@ in
     ./apache-kafka.nix
     ./clickhouse
     ./elasticsearch.nix
-    ./mysql.nix
+    ./mysql
     ./nginx.nix
     ./postgres
     ./redis-cluster.nix

nix/mysql.nix → nix/mysql/default.nix

@@ -216,7 +216,7 @@ in
 '';
 
             configureScript = pkgs.writeShellScriptBin "configure-mysql" ''
-              PATH="${lib.makeBinPath [config.package pkgs.coreutils]}:$PATH"
+              PATH="${lib.makeBinPath [config.package pkgs.coreutils pkgs.findutils]}:$PATH"
               set -euo pipefail
               ${envs} 
               ${lib.concatMapStrings (database: ''
@@ -237,7 +237,7 @@ in
                         cat ${database.schema}
                     elif [ -d "${database.schema}" ]
                     then
-                        cat ${database.schema}/mysql-databases/*.sql
+                        find ${database.schema} -type f -name '*.sql' | xargs cat
                     fi
                   ''}
                     ) | MYSQL_PWD="" ${config.package}/bin/mysql -u root -N

nix/mysql_test.nix → nix/mysql/mysql_test.nix

@@ -1,7 +1,7 @@
 { pkgs, config, ... }: {
   services.mysql.m1 = {
     enable = true;
-    initialDatabases = [{ name = "test_database"; }];
+    initialDatabases = [{ name = "test_database"; schema = ./test_schemas; }];
     initialScript = ''
       CREATE USER foo IDENTIFIED BY 'password@123';
       CREATE USER bar;
@@ -35,6 +35,15 @@
           echo "$isFooPresent" | grep 1
           echo "$isBarPresent" | grep 1
 
+          echo "Checking if both foo.sql and bar.sql are executed, ignoring baz.md"
+          echo "SELECT * FROM information_schema.tables WHERE table_schema = 'test_database' AND table_name = 'foo' LIMIT 1;" | MYSQL_PWD="" mysql -h 127.0.0.1 -u root | grep foo
+          echo "SELECT * FROM information_schema.tables WHERE table_schema = 'test_database' AND table_name = 'bar' LIMIT 1;" | MYSQL_PWD="" mysql -h 127.0.0.1 -u root | grep bar
+          if [[ -z $(echo "SELECT * FROM information_schema.tables WHERE table_schema = 'test_database' AND table_name = 'baz' LIMIT 1;" | MYSQL_PWD="" mysql -h 127.0.0.1 -u root) ]]; then
+            echo "success! baz table not found"
+          else
+            echo "baz table shoudn't exist"
+            exit 1
+          fi
         '';
         name = "mysql-test";
       };

nix/mysql/test_schemas/bar.sql

@@ -0,0 +1 @@
+CREATE TABLE bar (id INT PRIMARY KEY);

nix/mysql/test_schemas/baz.md

@@ -0,0 +1 @@
+CREATE TABLE baz (id INT PRIMARY KEY);

nix/mysql/test_schemas/foo.sql

@@ -0,0 +1 @@
+CREATE TABLE foo (id INT PRIMARY KEY);

test/flake.nix

@@ -36,7 +36,7 @@
             "${inputs.services-flake}/nix/apache-kafka_test.nix"
             "${inputs.services-flake}/nix/clickhouse/clickhouse_test.nix"
             "${inputs.services-flake}/nix/elasticsearch_test.nix"
-            "${inputs.services-flake}/nix/mysql_test.nix"
+            "${inputs.services-flake}/nix/mysql/mysql_test.nix"
             "${inputs.services-flake}/nix/nginx_test.nix"
             "${inputs.services-flake}/nix/postgres/postgres_test.nix"
             "${inputs.services-flake}/nix/redis_test.nix"