MXS-1300: Add docker based cluster for REST API testing

The REST API test suite now starts a four node MariaDB cluster with
docker-compose. This allows quick and easy local testing.

maxctrl/test/docker-compose.yml

@@ -0,0 +1,43 @@
+version: '2'
+services:
+    server1:
+        image: mariadb:10.0
+        network_mode: "host"
+        environment:
+            MYSQL_ALLOW_EMPTY_PASSWORD: Y
+        volumes:
+            - ./sql/master:/docker-entrypoint-initdb.d
+        command: mysqld --log-bin=binlog --binlog-format=ROW --server-id=3000 --port=3000 --log-slave-updates
+
+    server2:
+        image: mariadb:10.0
+        network_mode: "host"
+        depends_on:
+            - server1
+        environment:
+            MYSQL_ALLOW_EMPTY_PASSWORD: Y
+        volumes:
+            - ./sql/slave:/docker-entrypoint-initdb.d
+        command: mysqld --log-bin=binlog --binlog-format=ROW --server-id=3001 --port=3001 --log-slave-updates
+
+    server3:
+        image: mariadb:10.0
+        network_mode: "host"
+        depends_on:
+            - server1
+        environment:
+            MYSQL_ALLOW_EMPTY_PASSWORD: Y
+        volumes:
+            - ./sql/slave:/docker-entrypoint-initdb.d
+        command: mysqld --log-bin=binlog --binlog-format=ROW --server-id=3002 --port=3002 --log-slave-updates
+
+    server4:
+        image: mariadb:10.0
+        network_mode: "host"
+        depends_on:
+            - server1
+        environment:
+            MYSQL_ALLOW_EMPTY_PASSWORD: Y
+        volumes:
+            - ./sql/slave:/docker-entrypoint-initdb.d
+        command: mysqld --log-bin=binlog --binlog-format=ROW --server-id=3003 --port=3003 --log-slave-updates

maxctrl/test/sql/master/users.sql

@@ -0,0 +1,13 @@
+CREATE DATABASE test;
+
+CREATE USER 'maxuser'@'127.0.0.1' IDENTIFIED BY 'maxpwd';
+CREATE USER 'maxuser'@'%' IDENTIFIED BY 'maxpwd';
+GRANT ALL ON *.* TO 'maxuser'@'127.0.0.1' WITH GRANT OPTION;
+GRANT ALL ON *.* TO 'maxuser'@'%' WITH GRANT OPTION;
+
+CREATE USER 'skysql'@'127.0.0.1' IDENTIFIED BY 'skysql';
+CREATE USER 'skysql'@'%' IDENTIFIED BY 'skysql';
+GRANT ALL ON *.* TO 'skysql'@'127.0.0.1' WITH GRANT OPTION;
+GRANT ALL ON *.* TO 'skysql'@'%' WITH GRANT OPTION;
+
+SET GLOBAL max_connections=10000;

maxctrl/test/sql/slave/replication.sql

@@ -0,0 +1,3 @@
+CHANGE MASTER TO MASTER_HOST='127.0.0.1', MASTER_PORT=3000, MASTER_USER='maxuser', MASTER_PASSWORD='maxpwd', MASTER_LOG_POS=4, MASTER_CONNECT_RETRY=1;
+START SLAVE;
+SET GLOBAL max_connections=10000;

maxctrl/test/test_rest_api.sh

@@ -50,12 +50,32 @@ chmod 0755 $maxscaledir/lib/maxscale
 chmod 0755 $maxscaledir/cache/maxscale
 chmod 0755 $maxscaledir/run/maxscale
 
+# Go to the test directory
+cd $testdir
+
 # This variable is used to start and stop MaxScale before each test
 export MAXSCALE_DIR=$maxscaledir
 
+# Start MariaDB servers
+docker-compose up -d
+
+# Wait until the servers are up
+for node in server1 server2 server3 server4
+do
+    printf "Waiting for $node to start... "
+    for ((i=0; i<60; i++))
+    do
+        docker-compose exec $node mysql -umaxuser -pmaxpwd -e "select 1" >& /dev/null && break
+        sleep 1
+    done
+    echo "Done!"
+done
+
 # Run tests
-cd $testdir
 npm test
 rval=$?
 
+# Stop MariaDB servers
+docker-compose down -v
+
 exit $rval