Examples with ComponentDifferenceDTO org.apache.nifi.web.api.dto.ComponentDifferenceDTO used on opensource projects

Example 1 with ComponentDifferenceDTO

use of org.apache.nifi.web.api.dto.ComponentDifferenceDTO in project nifi by apache.

the class StandardNiFiServiceFacade method getLocalModifications.

@Override
public FlowComparisonEntity getLocalModifications(final String processGroupId) {
    final ProcessGroup processGroup = processGroupDAO.getProcessGroup(processGroupId);
    final VersionControlInformation versionControlInfo = processGroup.getVersionControlInformation();
    if (versionControlInfo == null) {
        throw new IllegalStateException("Process Group with ID " + processGroupId + " is not under Version Control");
    }
    final FlowRegistry flowRegistry = flowRegistryClient.getFlowRegistry(versionControlInfo.getRegistryIdentifier());
    if (flowRegistry == null) {
        throw new IllegalStateException("Process Group with ID " + processGroupId + " is tracking to a flow in Flow Registry with ID " + versionControlInfo.getRegistryIdentifier() + " but cannot find a Flow Registry with that identifier");
    }
    final VersionedFlowSnapshot versionedFlowSnapshot;
    try {
        versionedFlowSnapshot = flowRegistry.getFlowContents(versionControlInfo.getBucketIdentifier(), versionControlInfo.getFlowIdentifier(), versionControlInfo.getVersion(), true, NiFiUserUtils.getNiFiUser());
    } catch (final IOException | NiFiRegistryException e) {
        throw new NiFiCoreException("Failed to retrieve flow with Flow Registry in order to calculate local differences due to " + e.getMessage(), e);
    }
    final NiFiRegistryFlowMapper mapper = new NiFiRegistryFlowMapper();
    final VersionedProcessGroup localGroup = mapper.mapProcessGroup(processGroup, controllerFacade.getControllerServiceProvider(), flowRegistryClient, true);
    final VersionedProcessGroup registryGroup = versionedFlowSnapshot.getFlowContents();
    final ComparableDataFlow localFlow = new StandardComparableDataFlow("Local Flow", localGroup);
    final ComparableDataFlow registryFlow = new StandardComparableDataFlow("Versioned Flow", registryGroup);
    final Set<String> ancestorServiceIds = getAncestorGroupServiceIds(processGroup);
    final FlowComparator flowComparator = new StandardFlowComparator(registryFlow, localFlow, ancestorServiceIds, new ConciseEvolvingDifferenceDescriptor());
    final FlowComparison flowComparison = flowComparator.compare();
    final Set<ComponentDifferenceDTO> differenceDtos = dtoFactory.createComponentDifferenceDtos(flowComparison);
    final FlowComparisonEntity entity = new FlowComparisonEntity();
    entity.setComponentDifferences(differenceDtos);
    return entity;
}