Baralga / backend

Baralga Server Backend for multi-user capable time tracking.

Baralga Backend

Backend for multi user usage of the Baralga time tracking application.

Administration

Running the server backend

To run the server just start executable jar with the command java -jar baralga-backend-0.0.1.jar. You need at least Java version 13 but newer ones should work too.

Accessing the Web User Interface

The web user interface is available at http://localhost:8080/. You can log in as administrator with admin/adm1n or as user with user1/us3r.

Configuration

The backend is configured using the following environment variables:

Environment Variable	Default Value	Description
BARALGA_DS_URL	jdbc:mysql://localhost:3306/baralga	JDBC Connection String for database
BARALGA_DS_USER	root	database user
BARALGA_DS_PASSWORD	mysql	database password
SERVER_PORT	8080	http server port

Users and Roles

Baralga supports the following roles:

Role	DB Name	Description
User	ROLE_USER	Full access to his own activities but can only read projects.
Admin	ROLE_ADMIN	Full access to activities of all users and projects.

Administration

Users are stored in the database in the table users and the user role in the table authorities. Users can be created using the following sql statements.

INSERT INTO users (username, password, enabled)
  values (
    'user2',
    '$2a$10$IhFsXJYqYG56/b1JgzZzv.kPcPsJnXeQzD9evMOUHg2LT/.Oz9uEu', -- us3r
    1 -- enabled
);
INSERT INTO authorities (username, authority)
  values ('user2', 'ROLE_USER');

Passwords are encoded in BCrypt with BCrypt version $2a and strength 10. The tool https://8gwifi.org/bccrypt.jsp can be used to create a hashed password to be used in sql.

Supported Databases

Supported databases are:

• MySQL
• PostgreSQL

MySQL Configuration

BARALGA_DS_URL=jdbc:mysql://localhost:3306/baralga
BARALGA_DS_USER=root
BARALGA_DS_PASSWORD=mysql

PostgreSQL Configuration

BARALGA_DS_URL=jdbc:postgresql://localhost:5432/baralga
BARALGA_DS_USER=postgres
BARALGA_DS_PASSWORD=postgres

Health Check

A health check is available at http://localhost:8080/actuator/health.

Troubleshooting

MySQL error Invalid default value for 'end_time'

If you get the following error on MySql:

Caused by: org.flywaydb.core.internal.sqlscript.FlywaySqlScriptException:
Migration V1__setup_database.sql failed
---------------------------------------
SQL State  : 42000
Error Code : 1067
Message    : Invalid default value for 'end_time'
Location   : db/migration/V1__setup_database.sql (/home/valadmin/file:/home/valadmin/baralga-backend-0.1.0.jar!/BOOT-INF/classes!/db/migration/V1__setup_database.sql)
Line       : 11
Statement  : create table activity (
     activity_id  varchar(36) not null,
     description  varchar(4000),
     username     varchar(36) not null,
     start_time   timestamp,
     end_time     timestamp,
     project_id   varchar(36) not null,
     FOREIGN key (project_id) REFERENCES project(project_id)
)

Solution

This can be fixed with the following settings:

Sql_mode =ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

Development

Run ui build

The ui is build with parcel.js which bundles and compresses all javascript and css. The ui build copies the hashed assets to the respective maven directories.

mvn generate-resources -P ui