flyway migrations

Author: Rajeev Kumar Singh

Readme.md

@@ -53,7 +53,7 @@ I've written a complete tutorial series for this application on The CalliCoder B
 	mvn package
 	java -jar target/polls-0.0.1-SNAPSHOT.jar
 	```
-5. **Add the default Roles**
+5. ~~**Add the default Roles**~~ (It's not needed now. I've added flyway migrations)
 
 	The spring boot app uses role based authorization powered by spring security. Please execute the following sql queries in the database to insert the `USER` and `ADMIN` roles.
 

polling-app-server/pom.xml

@@ -58,11 +58,12 @@
 		</dependency>
 
 
+		<!-- Flyway database management -->
 		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter-test</artifactId>
-			<scope>test</scope>
+			<groupId>org.flywaydb</groupId>
+			<artifactId>flyway-core</artifactId>
 		</dependency>
+
 		<dependency>
 			<groupId>org.springframework.security</groupId>
 			<artifactId>spring-security-test</artifactId>

polling-app-server/src/main/resources/application.properties

@@ -10,11 +10,13 @@ spring.datasource.password= callicoder
 ## Hibernate Properties
 # The SQL dialect makes Hibernate generate better SQL for the chosen database
 spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5InnoDBDialect
-spring.jpa.hibernate.ddl-auto = update
+spring.jpa.hibernate.ddl-auto = validate
 
 ## Hibernate Logging
 logging.level.org.hibernate.SQL= DEBUG
 
+## Flyway Properties
+spring.flyway.baseline-on-migrate=true
 
 ## Jackson Properties
 spring.jackson.serialization.WRITE_DATES_AS_TIMESTAMPS= false

polling-app-server/src/main/resources/db/migration/V1__schema.sql

@@ -0,0 +1,69 @@
+CREATE TABLE `users` (
+  `id` bigint(20) NOT NULL AUTO_INCREMENT,
+  `name` varchar(40) NOT NULL,
+  `username` varchar(15) NOT NULL,
+  `email` varchar(40) NOT NULL,
+  `password` varchar(100) NOT NULL,
+  `created_at` datetime DEFAULT NULL,
+  `updated_at` datetime DEFAULT NULL,
+  PRIMARY KEY (`id`),
+  UNIQUE KEY `uk_users_username` (`username`),
+  UNIQUE KEY `uk_users_email` (`email`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+
+
+CREATE TABLE `roles` (
+  `id` bigint(20) NOT NULL AUTO_INCREMENT,
+  `name` varchar(60) NOT NULL,
+  PRIMARY KEY (`id`),
+  UNIQUE KEY `uk_roles_name` (`name`)
+) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;
+
+
+CREATE TABLE `user_roles` (
+  `user_id` bigint(20) NOT NULL,
+  `role_id` bigint(20) NOT NULL,
+  PRIMARY KEY (`user_id`,`role_id`),
+  KEY `fk_user_roles_role_id` (`role_id`),
+  CONSTRAINT `fk_user_roles_role_id` FOREIGN KEY (`role_id`) REFERENCES `roles` (`id`),
+  CONSTRAINT `fk_user_roles_user_id` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+
+
+CREATE TABLE `polls` (
+  `id` bigint(20) NOT NULL AUTO_INCREMENT,
+  `question` varchar(140) NOT NULL,
+  `expiration_date_time` datetime NOT NULL,
+  `created_at` datetime DEFAULT NULL,
+  `updated_at` datetime DEFAULT NULL,
+  `created_by` bigint(20) DEFAULT NULL,
+  `updated_by` bigint(20) DEFAULT NULL,
+  PRIMARY KEY (`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+
+
+CREATE TABLE `choices` (
+  `id` bigint(20) NOT NULL AUTO_INCREMENT,
+  `text` varchar(40) NOT NULL,
+  `poll_id` bigint(20) NOT NULL,
+  PRIMARY KEY (`id`),
+  KEY `fk_choices_poll_id` (`poll_id`),
+  CONSTRAINT `fk_choices_poll_id` FOREIGN KEY (`poll_id`) REFERENCES `polls` (`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+
+
+CREATE TABLE `votes` (
+  `id` bigint(20) NOT NULL AUTO_INCREMENT,
+  `user_id` bigint(20) NOT NULL,
+  `poll_id` bigint(20) NOT NULL,
+  `choice_id` bigint(20) NOT NULL,
+  `created_at` datetime DEFAULT NULL,
+  `updated_at` datetime DEFAULT NULL,
+  PRIMARY KEY (`id`),
+  KEY `fk_votes_user_id` (`user_id`),
+  KEY `fk_votes_poll_id` (`poll_id`),
+  KEY `fk_votes_choice_id` (`choice_id`),
+  CONSTRAINT `fk_votes_user_id` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`),
+  CONSTRAINT `fk_votes_poll_id` FOREIGN KEY (`poll_id`) REFERENCES `polls` (`id`),
+  CONSTRAINT `fk_votes_choice_id` FOREIGN KEY (`choice_id`) REFERENCES `choices` (`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;

polling-app-server/src/main/resources/db/migration/V2__default_roles.sql

@@ -0,0 +1,2 @@
+INSERT IGNORE INTO roles(name) VALUES('ROLE_USER');
+INSERT IGNORE INTO roles(name) VALUES('ROLE_ADMIN');