bbende commented on a change in pull request #3553: NIFI-5856: When exporting a
flow that references a Controller Service…
URL: https://github.com/apache/nifi/pull/3553#discussion_r303105617
##########
File path:
nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-web/nifi-web-api/src/main/java/org/apache/nifi/web/StandardNiFiServiceFacade.java
##########
@@ -3071,6 +3078,122 @@ public void
discoverCompatibleBundles(VersionedProcessGroup versionedGroup) {
BundleUtils.discoverCompatibleBundles(controllerFacade.getExtensionManager(),
versionedGroup);
}
+ @Override
+ public void resolveInheritedControllerServices(final VersionedFlowSnapshot
versionedFlowSnapshot, final String processGroupId) {
+ final VersionedProcessGroup versionedGroup =
versionedFlowSnapshot.getFlowContents();
+ resolveInheritedControllerServices(versionedGroup, processGroupId,
versionedFlowSnapshot.getExternalControllerServices());
+ }
+
+ private void resolveInheritedControllerServices(final
VersionedProcessGroup versionedGroup, final String processGroupId,
+ final Map<String,
ExternalControllerServiceReference> externalControllerServiceReferences) {
+ final Set<String> availableControllerServiceIds =
findAllControllerServiceIds(versionedGroup);
+ final ProcessGroup parentGroup =
processGroupDAO.getProcessGroup(processGroupId);
+ final Set<ControllerServiceNode> serviceNodes =
parentGroup.getControllerServices(true);
+
+ final ExtensionManager extensionManager =
controllerFacade.getExtensionManager();
+ for (final VersionedProcessor processor :
versionedGroup.getProcessors()) {
+ final BundleCoordinate compatibleBundle =
BundleUtils.discoverCompatibleBundle(extensionManager, processor.getType(),
processor.getBundle());
+ final ConfigurableComponent tempComponent =
extensionManager.getTempComponent(processor.getType(), compatibleBundle);
+
+ resolveInheritedControllerServices(processor,
availableControllerServiceIds, serviceNodes,
externalControllerServiceReferences, tempComponent::getPropertyDescriptor);
+ }
+
+ for (final VersionedControllerService service :
versionedGroup.getControllerServices()) {
+ final BundleCoordinate compatibleBundle =
BundleUtils.discoverCompatibleBundle(extensionManager, service.getType(),
service.getBundle());
+ final ConfigurableComponent tempComponent =
extensionManager.getTempComponent(service.getType(), compatibleBundle);
+
+ resolveInheritedControllerServices(service,
availableControllerServiceIds, serviceNodes,
externalControllerServiceReferences, tempComponent::getPropertyDescriptor);
+ }
+
+ for (final VersionedProcessGroup child :
versionedGroup.getProcessGroups()) {
+ resolveInheritedControllerServices(child, processGroupId,
externalControllerServiceReferences);
+ }
+ }
+
+
+ private void resolveInheritedControllerServices(final
VersionedConfigurableComponent component, final Set<String>
availableControllerServiceIds,
+ final
Set<ControllerServiceNode> availableControllerServices,
+ final Map<String,
ExternalControllerServiceReference> externalControllerServiceReferences,
+ final Function<String,
PropertyDescriptor> descriptorLookup) {
+ final Map<String, VersionedPropertyDescriptor> descriptors =
component.getPropertyDescriptors();
+ final Map<String, String> properties = component.getProperties();
+
+ resolveInheritedControllerServices(descriptors, properties,
availableControllerServiceIds, availableControllerServices,
externalControllerServiceReferences, descriptorLookup);
+ }
+
+
+ private void resolveInheritedControllerServices(final Map<String,
VersionedPropertyDescriptor> propertyDescriptors, final Map<String, String>
componentProperties,
+ final Set<String>
availableControllerServiceIds, final Set<ControllerServiceNode>
availableControllerServices,
+ final Map<String,
ExternalControllerServiceReference> externalControllerServiceReferences,
+ final Function<String,
PropertyDescriptor> descriptorLookup) {
+
+ for (final Map.Entry<String, String> entry : new
HashMap<>(componentProperties).entrySet()) {
+ final String propertyName = entry.getKey();
+ final String propertyValue = entry.getValue();
+
+ final VersionedPropertyDescriptor propertyDescriptor =
propertyDescriptors.get(propertyName);
+ if (propertyDescriptor == null) {
+ continue;
+ }
+
+ if (!propertyDescriptor.getIdentifiesControllerService()) {
+ continue;
+ }
+
+ // If the referenced Controller Service is available in this flow,
there is nothing to resolve.
+ if (availableControllerServiceIds.contains(propertyValue)) {
+ continue;
+ }
+
+ final ExternalControllerServiceReference externalServiceReference
= externalControllerServiceReferences == null ? null :
externalControllerServiceReferences.get(propertyValue);
+ if (externalServiceReference == null) {
+ continue;
+ }
+
+ final PropertyDescriptor descriptor =
descriptorLookup.apply(propertyName);
+ if (descriptor == null) {
+ continue;
+ }
+
+ final Class<? extends ControllerService> referencedServiceClass =
descriptor.getControllerServiceDefinition();
+ if (referencedServiceClass == null) {
+ continue;
+ }
+
+ final String externalControllerServiceName =
externalServiceReference.getName();
+ final List<ControllerServiceNode> matchingControllerServices =
availableControllerServices.stream()
+ .filter(service ->
service.getName().equals(externalControllerServiceName))
+ .filter(service ->
referencedServiceClass.isAssignableFrom(service.getProxiedControllerService().getClass()))
Review comment:
I think we also need to consider whether the current user has READ access to
the service. Right now it will resolve a service even if the current user
doesn't have READ.
This might then pose another question... if there are two services with the
same name, and the user is only authorized for one of them, do we auto select
the other, or do we consider it a case where we can't decide the right one?
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