Examples with OperationSequence com.vmware.xenon.common.OperationSequence used on opensource projects

Example 6 with OperationSequence

use of com.vmware.xenon.common.OperationSequence in project photon-model by vmware.

the class VSphereDiskService method finishDiskDeleteOperation.

/**
 * Finish the disk delete operation by cleaning up the disk reference in the system.
 */
private void finishDiskDeleteOperation(DiskContext ctx) {
    // Clean up disk description link if it is present.
    String diskDescLink = CustomProperties.of(ctx.diskState).getString(PhotonModelConstants.TEMPLATE_DISK_LINK);
    OperationSequence seq = null;
    if (diskDescLink != null && !diskDescLink.isEmpty()) {
        seq = OperationSequence.create(deleteDisk(diskDescLink));
    }
    List<Operation> nextOps = new ArrayList<>(2);
    if (seq == null) {
        seq = OperationSequence.create(deleteDisk(ctx.diskState.documentSelfLink));
    } else {
        nextOps.add(deleteDisk(ctx.diskState.documentSelfLink));
    }
    nextOps.add(ctx.mgr.createTaskPatch(TaskState.TaskStage.FINISHED));
    seq.next(nextOps.toArray(new Operation[nextOps.size()])).setCompletion(ctx.failTaskOnError()).sendWith(this);
}

Example 7 with OperationSequence

use of com.vmware.xenon.common.OperationSequence in project photon-model by vmware.

the class SingleResourceStatsAggregationTaskService method batchPublishMetrics.

public void batchPublishMetrics(SingleResourceStatsAggregationTaskState currentState, List<Operation> operations, int batchIndex) {
    OperationSequence opSequence = null;
    Integer nextBatchIndex = null;
    for (int i = batchIndex; i < operations.size(); i++) {
        final Operation operation = operations.get(i);
        if (opSequence == null) {
            opSequence = OperationSequence.create(operation);
            continue;
        }
        opSequence = opSequence.next(operation);
        // Batch size of 100
        int batchSize = 100;
        int opSequenceSize = i + 1;
        if ((opSequenceSize % batchSize) == 0) {
            nextBatchIndex = opSequenceSize;
            break;
        }
    }
    Integer finalNextBatchIndex = nextBatchIndex;
    opSequence.setCompletion((ops, exc) -> {
        if (exc != null) {
            sendSelfFailurePatch(currentState, exc.values().iterator().next().getMessage());
            return;
        }
        if (finalNextBatchIndex == null || finalNextBatchIndex == operations.size()) {
            sendSelfPatch(currentState, TaskStage.FINISHED, null);
            return;
        }
        batchPublishMetrics(currentState, operations, finalNextBatchIndex);
    });
    opSequence.sendWith(this);
}

Example 8 with OperationSequence

use of com.vmware.xenon.common.OperationSequence in project photon-model by vmware.

the class EndpointAllocationTaskService method rollbackEndpoint.

private void rollbackEndpoint(EndpointAllocationTaskState currentState) {
    Runnable completionHandler = () -> {
        sendSelfPatch(createUpdateSubStageTask(TaskStage.FAILED, SubStage.FAILED));
    };
    if (currentState.createdDocumentLinks == null || currentState.createdDocumentLinks.isEmpty()) {
        completionHandler.run();
    } else {
        List<Operation> deleteOps = currentState.createdDocumentLinks.stream().map(link -> Operation.createDelete(this, link)).collect(Collectors.toList());
        // execute the delete ops in a reverse order because of possible dependencies
        OperationSequence opSequence = OperationSequence.create(deleteOps.get(deleteOps.size() - 1));
        for (int i = deleteOps.size() - 2; i >= 0; i--) {
            opSequence = opSequence.next(deleteOps.get(i));
        }
        opSequence.setCompletion((ops, exs) -> {
            if (exs != null) {
                logWarning(() -> "Error during rollback of created endpoint documents: " + Utils.toString(exs));
            }
            completionHandler.run();
        }).sendWith(this);
    }
}