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Version: 2.0

Multitenant

Overall​

Every microservice generated with the "microservice-archetype" use the "jpa-multitenant-regards" module to handle connection to databases.

To do so, every microservice include a "remote-tenant-resolver" module which is used to communicate with the central "administration-service".
The only exception is for microservice "administration" which includes a "local-tenant-resolver" to use internal services instead of Rest controllers.

At startup the "jpa-multitenant-regards" module is initialized with the here-under steps :

  1. Retrieve all tenants
  2. For each tenants retrieve microservices database connections.
  3. Create the pool of connections.
  4. Listen to tenant and connection event to handle a new project or an update on an existing connection.

Initial and static configuration​

At startup if a microservice database connections are not configured in the administration microservice, then a default project is initialized with default database connections. This project and connections are defined in the main "application.properties "file of the microservice. The available configuration values are :

Disable JPA multitenant support (default true if not present)
regards.jpa.multitenant.enabled=true

Activate embedded mode with HSQLDB
regards.jpa.multitenant.embedded=true

Path for embedded databases files
regards.jpa.multitenant.embeddedPath=target

Not mandatory if embedded mode is activated
regards.jpa.multitenant.dialect=org.hibernate.dialect.PostgreSQLDialect

database user name for tenant x
regards.jpa.multitenant.tenants[x].tenant=example

database url for tenant x (Not mandatory if embedded mode is activated) regards.jpa.multitenant.tenants[x].url=jdbc:postgresql://localhost:5432/test1

database user name for tenant x (Not mandatory if embedded mode is activated)
regards.jpa.multitenant.tenants[x].userName=postgres

database user password for tenant x (Not mandatory if embedded mode is activated)
regards.jpa.multitenant.tenants[x].password=postgres

database driver for tenant x (Not mandatory if embedded mode is activated)
regards.jpa.multitenant.tenants[x].driverClassName=org.postgresql.Driver

x : Integer value for tenant index starting with 0.