There’s a lot to do when it comes to managing the initial repository state in Adobe Experience Manager (AEM). Keeping all the environments in sync with the required basic code, content, and configuration is a challenge. So is ensuring a consistent local setup for all the developers on a project—content, users and groups, node structures, configurations, and more.
Enter - Sling RepoInit!
What Is Sling RepoInit?
Sling RepoInit is a mechanism used by Sling for base repository initialization. It also includes the ability to register configurations making it available to projects to further configure the repository. It is implemented as a Domain Specific Language (DSL) with a parser and JCR implementation.
With immutable instances becoming the norm, it has taken on a more important role. With RepoInit you can write instructions or scripts that define JCR structures, ranging from common node structures like folder trees to users, service users, groups, and ACL definitions. This is useful, especially for initialization and content migration purposes.
Why Sling RepoInit?
RepoInit operations are fast and atomic.
With RepoInit scripts, instructions are checked against the current state and executed only if needed. All this happens when the RepositoryInitializer in the JCR RepoInit Bundle initializes, thereby ensuring all required JCR structures exist by the time code is executed.