DCB Service

A Direct Consortial Borrowing Service for the OpenRS resource sharing project.

Source code and Docker container

This module is distributed in source and pre-compiled docker container form:

• https://github.com/openlibraryenvironment/dcb-service
• https://nexus.libsdev.k-int.com/#browse/browse:libsdev-docker:v2%2Fknowledgeintegration%2Fdcb

Deployment

Upgrading from 8.x to v9.0.0? Read docs/v9-migration-guide.md before you deploy.

Secret Manager Integration

By creating a bootstrap.yml file and mounting it at /bootstrap.yml, then referencing this file in an environment variable: MICRONAUT_CONFIG_FILES=/bootstrap.yml devops teams can point DCB at a local secret manager. Info for different environments can be found here: https://guides.micronaut.io/latest/tag-distributed_configuration.html and the bootstrap.yml under dcb/src/main/resources contains commented out sections for AWS Secrets Manager and Hashicorp Vault.

Environment overrides

It is important to note that Micronaut declarative configuration reads environment variables last, so if switching to secrets manager, you should remember to remove any environment variables as they will override distributed config.

The module is deployed as a docker container which supports the following runtime ENV settings

Note: Today flyway does not support r2dbc datasources, so we need to configure both JDBC and R2DBC datasources - same DB connection effectively, 2 different connections - with JDBC only being used for database migrations.

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