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4.3. Backup a Repository

The backupRepository method provided by the org.modeshape.jcr.api.RepositoryManager interface is used to create a backup of the entire repository, including all workspaces that existed when the backup was initiated.

This method blocks until the backup is completed, so it is the caller's responsibility to invoke the method asynchronously if that is desired.

When this method is called on a repository that is being actively used, all of the changes made while the backup process is underway will be included. At some point near the end of the backup process, however, additional changes will be excluded from the backup. This means that each backup contains a fully-consistent snapshot of the entire repository as it existed near the time at which the backup completed.

The following code demonstrates usage of the backup method:

org.modeshape.jcr.api.RepositoryManager repoMgr = ...
java.io.File backupDirectory = ...
Problems problems = repoMgr.backupRepository(backupDirectory);
if ( problems.hasProblems() ) {
    System.out.println("Problems restoring the repository:");
    // Report the problems (we'll just print them out) ...
    for ( Problem problem : problems ) {
       System.out.println(problem);
    }
} else {
    System.out.println("The backup was successful");
}

Each backup is stored on the file system in a directory that contains a series of GZIP-ed files (each containing representations of approximately 100K nodes) and a subdirectory in which all the large BINARY values are stored.

Note

It is the application's responsibility to initiate each backup operation. There currently is no way to configure a scheduled backup. Doing so would add significant complexity.

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4.3. Backup a Repository

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