Examples with BackupRole io.atomix.protocols.backup.roles.BackupRole used on opensource projects

Example 1 with BackupRole

use of io.atomix.protocols.backup.roles.BackupRole in project atomix by atomix.

the class PrimaryBackupServiceContext method changeRole.

/**
 * Changes the roles.
 */
private void changeRole(PrimaryTerm term) {
    if (term.term() > currentTerm) {
        log.debug("Term changed: {}", term);
        currentTerm = term.term();
        primary = term.primary() != null ? term.primary().nodeId() : null;
        backups = term.backups(descriptor.backups()).stream().map(Member::nodeId).collect(Collectors.toList());
        if (Objects.equals(primary, clusterService.getLocalNode().id())) {
            if (this.role == null) {
                this.role = new PrimaryRole(this);
                log.debug("{} transitioning to {}", clusterService.getLocalNode().id(), Role.PRIMARY);
            } else if (this.role.role() != Role.PRIMARY) {
                this.role.close();
                this.role = new PrimaryRole(this);
                log.debug("{} transitioning to {}", clusterService.getLocalNode().id(), Role.PRIMARY);
            }
        } else if (backups.contains(clusterService.getLocalNode().id())) {
            if (this.role == null) {
                this.role = new BackupRole(this);
                log.debug("{} transitioning to {}", clusterService.getLocalNode().id(), Role.BACKUP);
            } else if (this.role.role() != Role.BACKUP) {
                this.role.close();
                this.role = new BackupRole(this);
                log.debug("{} transitioning to {}", clusterService.getLocalNode().id(), Role.BACKUP);
            }
        } else {
            if (this.role == null) {
                this.role = new NoneRole(this);
                log.debug("{} transitioning to {}", clusterService.getLocalNode().id(), Role.NONE);
            } else if (this.role.role() != Role.NONE) {
                this.role.close();
                this.role = new NoneRole(this);
                log.debug("{} transitioning to {}", clusterService.getLocalNode().id(), Role.NONE);
            }
        }
    }
}