Examples with PlannerResourceUsage com.cloud.deploy.DeploymentPlanner.PlannerResourceUsage used on opensource projects

Example 1 with PlannerResourceUsage

use of com.cloud.deploy.DeploymentPlanner.PlannerResourceUsage in project cloudstack by apache.

the class DeploymentPlanningManagerImpl method checkIfHostFitsPlannerUsage.

@DB
private boolean checkIfHostFitsPlannerUsage(final long hostId, final PlannerResourceUsage resourceUsageRequired) {
    // TODO Auto-generated method stub
    // check if this host has been picked up by some other planner
    // exclusively
    // if planner can work with shared host, check if this host has
    // been marked as 'shared'
    // else if planner needs dedicated host,
    PlannerHostReservationVO reservationEntry = _plannerHostReserveDao.findByHostId(hostId);
    if (reservationEntry != null) {
        final long id = reservationEntry.getId();
        PlannerResourceUsage hostResourceType = reservationEntry.getResourceUsage();
        if (hostResourceType != null) {
            if (hostResourceType == resourceUsageRequired) {
                return true;
            } else {
                s_logger.debug("Cannot use this host for usage: " + resourceUsageRequired + ", since this host has been reserved for planner usage : " + hostResourceType);
                return false;
            }
        } else {
            final PlannerResourceUsage hostResourceTypeFinal = hostResourceType;
            // let us lock the reservation entry before updating.
            return Transaction.execute(new TransactionCallback<Boolean>() {

                @Override
                public Boolean doInTransaction(TransactionStatus status) {
                    final PlannerHostReservationVO lockedEntry = _plannerHostReserveDao.lockRow(id, true);
                    if (lockedEntry == null) {
                        s_logger.error("Unable to lock the host entry for reservation, host: " + hostId);
                        return false;
                    }
                    // check before updating
                    if (lockedEntry.getResourceUsage() == null) {
                        lockedEntry.setResourceUsage(resourceUsageRequired);
                        _plannerHostReserveDao.persist(lockedEntry);
                        return true;
                    } else {
                        // someone updated it earlier. check if we can still use it
                        if (lockedEntry.getResourceUsage() == resourceUsageRequired) {
                            return true;
                        } else {
                            s_logger.debug("Cannot use this host for usage: " + resourceUsageRequired + ", since this host has been reserved for planner usage : " + hostResourceTypeFinal);
                            return false;
                        }
                    }
                }
            });
        }
    }
    return false;
}