NIFI-4151: Updated UpdateAttribute to only create JAXB Context once; Minor performance tweaks to standard validators and StatusMerge.prettyPrint; updated AbstractConfiguredComponent to not create a new ValidationContext each time that validate is called but only when needed; updated FlowController, StandardControllerServiceProvider, and StandardProcessGroup so that component lookups can be performed using a ConcurrentMap at FlowController level instead of having to perform a depth-first search through all ProcessGroups when calling findProcessor(), findProcessGroup(), findXYZ()

This closes #1979

nifi-commons/nifi-utils/src/main/java/org/apache/nifi/processor/util/StandardValidators.java

@@ -391,6 +391,8 @@ public class StandardValidators {
     }
 
     public static final Validator TIME_PERIOD_VALIDATOR = new Validator() {
+        private final Pattern TIME_DURATION_PATTERN = Pattern.compile(FormatUtils.TIME_DURATION_REGEX);
+
         @Override
         public ValidationResult validate(final String subject, final String input, final ValidationContext context) {
             if (context.isExpressionLanguageSupported(subject) && context.isExpressionLanguagePresent(input)) {
@@ -400,7 +402,7 @@ public class StandardValidators {
             if (input == null) {
                 return new ValidationResult.Builder().subject(subject).input(input).valid(false).explanation("Time Period cannot be null").build();
             }
-            if (Pattern.compile(FormatUtils.TIME_DURATION_REGEX).matcher(input.toLowerCase()).matches()) {
+            if (TIME_DURATION_PATTERN.matcher(input.toLowerCase()).matches()) {
                 return new ValidationResult.Builder().subject(subject).input(input).valid(true).build();
             } else {
                 return new ValidationResult.Builder()
@@ -416,6 +418,8 @@ public class StandardValidators {
     };
 
     public static final Validator DATA_SIZE_VALIDATOR = new Validator() {
+        private final Pattern DATA_SIZE_PATTERN = Pattern.compile(DataUnit.DATA_SIZE_REGEX);
+
         @Override
         public ValidationResult validate(final String subject, final String input, final ValidationContext context) {
             if (context.isExpressionLanguageSupported(subject) && context.isExpressionLanguagePresent(input)) {
@@ -430,7 +434,7 @@ public class StandardValidators {
                         .explanation("Data Size cannot be null")
                         .build();
             }
-            if (Pattern.compile(DataUnit.DATA_SIZE_REGEX).matcher(input.toUpperCase()).matches()) {
+            if (DATA_SIZE_PATTERN.matcher(input.toUpperCase()).matches()) {
                 return new ValidationResult.Builder().subject(subject).input(input).valid(true).build();
             } else {
                 return new ValidationResult.Builder()
@@ -706,8 +710,7 @@ public class StandardValidators {
     //
     //
     static class TimePeriodValidator implements Validator {
-
+        private static final Pattern pattern = Pattern.compile(FormatUtils.TIME_DURATION_REGEX);
-        private final Pattern pattern;
 
         private final long minNanos;
         private final long maxNanos;
@@ -716,8 +719,6 @@ public class StandardValidators {
         private final String maxValueEnglish;
 
         public TimePeriodValidator(final long minValue, final TimeUnit minTimeUnit, final long maxValue, final TimeUnit maxTimeUnit) {
-            pattern = Pattern.compile(FormatUtils.TIME_DURATION_REGEX);
-
             this.minNanos = TimeUnit.NANOSECONDS.convert(minValue, minTimeUnit);
             this.maxNanos = TimeUnit.NANOSECONDS.convert(maxValue, maxTimeUnit);
             this.minValueEnglish = minValue + " " + minTimeUnit.toString();

nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-cluster/src/main/java/org/apache/nifi/cluster/manager/StatusMerger.java

@@ -61,6 +61,12 @@ import java.util.Set;
 import java.util.concurrent.TimeUnit;
 
 public class StatusMerger {
+    private static final String ZERO_COUNT = "0";
+    private static final String ZERO_BYTES = "0 bytes";
+    private static final String ZERO_COUNT_AND_BYTES = "0 (0 bytes)";
+    private static final String EMPTY_COUNT = "-";
+    private static final String EMPTY_BYTES = "-";
+
     public static void merge(final ControllerStatusDTO target, final ControllerStatusDTO toMerge) {
         if (target == null || toMerge == null) {
             return;
@@ -743,14 +749,32 @@ public class StatusMerger {
     }
 
     public static String formatCount(final Integer intStatus) {
-        return intStatus == null ? "-" : FormatUtils.formatCount(intStatus);
+        if (intStatus == null) {
+            return EMPTY_COUNT;
+        }
+        if (intStatus == 0) {
+            return ZERO_COUNT;
+        }
+
+        return FormatUtils.formatCount(intStatus);
     }
 
     public static String formatDataSize(final Long longStatus) {
-        return longStatus == null ? "-" : FormatUtils.formatDataSize(longStatus);
+        if (longStatus == null) {
+            return EMPTY_BYTES;
+        }
+        if (longStatus == 0L) {
+            return ZERO_BYTES;
+        }
+
+        return FormatUtils.formatDataSize(longStatus);
     }
 
     public static String prettyPrint(final Integer count, final Long bytes) {
+        if (count != null && bytes != null && count == 0 && bytes == 0L) {
+            return ZERO_COUNT_AND_BYTES;
+        }
+
         return formatCount(count) + " (" + formatDataSize(bytes) + ")";
     }
 

nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-core-api/src/main/java/org/apache/nifi/controller/AbstractConfiguredComponent.java

@@ -61,6 +61,7 @@ public abstract class AbstractConfiguredComponent implements ConfigurableCompone
     private final ControllerServiceProvider serviceProvider;
     private final AtomicReference<String> name;
     private final AtomicReference<String> annotationData = new AtomicReference<>();
+    private final AtomicReference<ValidationContext> validationContext = new AtomicReference<>();
     private final String componentType;
     private final String componentCanonicalClass;
     private final VariableRegistry variableRegistry;
@@ -118,6 +119,7 @@ public abstract class AbstractConfiguredComponent implements ConfigurableCompone
 
     @Override
     public void setAnnotationData(final String data) {
+        invalidateValidationContext();
         annotationData.set(CharacterFilterUtils.filterInvalidXmlCharacters(data));
     }
 
@@ -435,6 +437,7 @@ public abstract class AbstractConfiguredComponent implements ConfigurableCompone
 
     @Override
     public void onPropertyModified(final PropertyDescriptor descriptor, final String oldValue, final String newValue) {
+        invalidateValidationContext();
         try (final NarCloseable narCloseable = NarCloseable.withComponentNarLoader(getComponent().getClass(), getComponent().getIdentifier())) {
             getComponent().onPropertyModified(descriptor, oldValue, newValue);
         }
@@ -449,8 +452,7 @@ public abstract class AbstractConfiguredComponent implements ConfigurableCompone
 
     @Override
     public boolean isValid() {
-        final Collection<ValidationResult> validationResults = validate(validationContextFactory.newValidationContext(
+        final Collection<ValidationResult> validationResults = validate(getValidationContext());
-            getProperties(), getAnnotationData(), getProcessGroupIdentifier(), getIdentifier()));
 
         for (final ValidationResult result : validationResults) {
             if (!result.isValid()) {
@@ -470,8 +472,13 @@ public abstract class AbstractConfiguredComponent implements ConfigurableCompone
         final List<ValidationResult> results = new ArrayList<>();
         lock.lock();
         try {
-            final ValidationContext validationContext = validationContextFactory.newValidationContext(
+            final ValidationContext validationContext;
-                serviceIdentifiersNotToValidate, getProperties(), getAnnotationData(), getProcessGroupIdentifier(), getIdentifier());
+            if (serviceIdentifiersNotToValidate == null || serviceIdentifiersNotToValidate.isEmpty()) {
+                validationContext = getValidationContext();
+            } else {
+                validationContext = getValidationContextFactory().newValidationContext(serviceIdentifiersNotToValidate,
+                    getProperties(), getAnnotationData(), getProcessGroupIdentifier(), getIdentifier());
+            }
 
             final Collection<ValidationResult> validationResults;
             try (final NarCloseable narCloseable = NarCloseable.withComponentNarLoader(getComponent().getClass(), getComponent().getIdentifier())) {
@@ -515,6 +522,25 @@ public abstract class AbstractConfiguredComponent implements ConfigurableCompone
         return this.validationContextFactory;
     }
 
+    protected void invalidateValidationContext() {
+        this.validationContext.set(null);
+    }
+
+    protected ValidationContext getValidationContext() {
+        while (true) {
+            ValidationContext context = this.validationContext.get();
+            if (context != null) {
+                return context;
+            }
+
+            context = getValidationContextFactory().newValidationContext(getProperties(), getAnnotationData(), getProcessGroupIdentifier(), getIdentifier());
+            final boolean updated = validationContext.compareAndSet(null, context);
+            if (updated) {
+                return context;
+            }
+        }
+    }
+
     protected VariableRegistry getVariableRegistry() {
         return this.variableRegistry;
     }

nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-core/src/main/java/org/apache/nifi/controller/FlowController.java

@@ -18,7 +18,6 @@ package org.apache.nifi.controller;
 
 import static java.util.Objects.requireNonNull;
 
-import com.sun.jersey.api.client.ClientHandlerException;
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import java.io.InputStream;
@@ -47,7 +46,9 @@ import java.util.concurrent.atomic.AtomicReference;
 import java.util.concurrent.locks.Lock;
 import java.util.concurrent.locks.ReentrantReadWriteLock;
 import java.util.stream.Collectors;
+
 import javax.net.ssl.SSLContext;
+
 import org.apache.commons.collections4.Predicate;
 import org.apache.commons.lang3.StringUtils;
 import org.apache.nifi.action.Action;
@@ -248,6 +249,8 @@ import org.apache.zookeeper.server.quorum.QuorumPeerConfig.ConfigException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import com.sun.jersey.api.client.ClientHandlerException;
+
 public class FlowController implements EventAccess, ControllerServiceProvider, ReportingTaskProvider,
     QueueProvider, Authorizable, ProvenanceAuthorizableFactory, NodeTypeProvider, IdentifierLookup, ReloadComponent {
 
@@ -301,6 +304,13 @@ public class FlowController implements EventAccess, ControllerServiceProvider, R
     private final VariableRegistry variableRegistry;
     private final ConcurrentMap<String, ControllerServiceNode> rootControllerServices = new ConcurrentHashMap<>();
 
+    private final ConcurrentMap<String, ProcessorNode> allProcessors = new ConcurrentHashMap<>();
+    private final ConcurrentMap<String, ProcessGroup> allProcessGroups = new ConcurrentHashMap<>();
+    private final ConcurrentMap<String, Connection> allConnections = new ConcurrentHashMap<>();
+    private final ConcurrentMap<String, Port> allInputPorts = new ConcurrentHashMap<>();
+    private final ConcurrentMap<String, Port> allOutputPorts = new ConcurrentHashMap<>();
+    private final ConcurrentMap<String, Funnel> allFunnels = new ConcurrentHashMap<>();
+
     private volatile ZooKeeperStateServer zooKeeperStateServer;
 
     // The Heartbeat Bean is used to provide an Atomic Reference to data that is used in heartbeats that may
@@ -532,7 +542,7 @@ public class FlowController implements EventAccess, ControllerServiceProvider, R
         final ProcessGroup rootGroup = new StandardProcessGroup(ComponentIdGenerator.generateId().toString(), this, processScheduler,
                 nifiProperties, encryptor, this, this.variableRegistry);
         rootGroup.setName(DEFAULT_ROOT_GROUP_NAME);
-        rootGroupRef.set(rootGroup);
+        setRootGroup(rootGroup);
         instanceId = ComponentIdGenerator.generateId().toString();
 
         controllerServiceProvider = new StandardControllerServiceProvider(this, processScheduler, bulletinRepository, stateManagerProvider, this.variableRegistry, this.nifiProperties);
@@ -1660,6 +1670,8 @@ public class FlowController implements EventAccess, ControllerServiceProvider, R
 
             // update the heartbeat bean
             this.heartbeatBeanRef.set(new HeartbeatBean(group, isPrimary()));
+            allProcessGroups.put(group.getIdentifier(), group);
+            allProcessGroups.put(ROOT_GROUP_ID_ALIAS, group);
         } finally {
             writeLock.unlock();
         }
@@ -2364,12 +2376,76 @@ public class FlowController implements EventAccess, ControllerServiceProvider, R
      * @return the process group or null if not group is found
      */
     public ProcessGroup getGroup(final String id) {
-        requireNonNull(id);
+        return allProcessGroups.get(requireNonNull(id));
-        final ProcessGroup root = getRootGroup();
-        final String searchId = id.equals(ROOT_GROUP_ID_ALIAS) ? getRootGroupId() : id;
-        return root == null ? null : root.findProcessGroup(searchId);
     }
 
+    public void onProcessGroupAdded(final ProcessGroup group) {
+        allProcessGroups.put(group.getIdentifier(), group);
+    }
+
+    public void onProcessGroupRemoved(final ProcessGroup group) {
+        allProcessGroups.remove(group.getIdentifier());
+    }
+
+    public void onProcessorAdded(final ProcessorNode procNode) {
+        allProcessors.put(procNode.getIdentifier(), procNode);
+    }
+
+    public void onProcessorRemoved(final ProcessorNode procNode) {
+        allProcessors.remove(procNode.getIdentifier());
+    }
+
+    public ProcessorNode getProcessorNode(final String id) {
+        return allProcessors.get(id);
+    }
+
+    public void onConnectionAdded(final Connection connection) {
+        allConnections.put(connection.getIdentifier(), connection);
+    }
+
+    public void onConnectionRemoved(final Connection connection) {
+        allConnections.remove(connection.getIdentifier());
+    }
+
+    public Connection getConnection(final String id) {
+        return allConnections.get(id);
+    }
+
+    public void onInputPortAdded(final Port inputPort) {
+        allInputPorts.put(inputPort.getIdentifier(), inputPort);
+    }
+
+    public void onInputPortRemoved(final Port inputPort) {
+        allInputPorts.remove(inputPort.getIdentifier());
+    }
+
+    public Port getInputPort(final String id) {
+        return allInputPorts.get(id);
+    }
+
+    public void onOutputPortAdded(final Port outputPort) {
+        allOutputPorts.put(outputPort.getIdentifier(), outputPort);
+    }
+
+    public void onOutputPortRemoved(final Port outputPort) {
+        allOutputPorts.remove(outputPort.getIdentifier());
+    }
+
+    public Port getOutputPort(final String id) {
+        return allOutputPorts.get(id);
+    }
+
+    public void onFunnelAdded(final Funnel funnel) {
+        allFunnels.put(funnel.getIdentifier(), funnel);
+    }
+
+    public void onFunnelRemoved(final Funnel funnel) {
+        allFunnels.remove(funnel.getIdentifier());
+    }
+
+    public Funnel getFunnel(final String id) {
+        return allFunnels.get(id);
+    }
     /**
      * Returns the status of all components in the controller. This request is
      * not in the context of a user so the results will be unfiltered.
@@ -3487,7 +3563,9 @@ public class FlowController implements EventAccess, ControllerServiceProvider, R
     }
 
     public int getActiveThreadCount() {
-        return getGroupStatus(getRootGroupId()).getActiveThreadCount();
+        final int timerDrivenCount = timerDrivenEngineRef.get().getActiveCount();
+        final int eventDrivenCount = eventDrivenEngineRef.get().getActiveCount();
+        return timerDrivenCount + eventDrivenCount;
     }
 
     private RepositoryStatusReport getProcessorStats() {

nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-core/src/main/java/org/apache/nifi/controller/StandardProcessorNode.java

@@ -964,9 +964,7 @@ public class StandardProcessorNode extends ProcessorNode implements Connectable
     @Override
     public boolean isValid() {
         try {
-            final ValidationContext validationContext = this.getValidationContextFactory()
+            final ValidationContext validationContext = getValidationContext();
-                .newValidationContext(getProperties(), getAnnotationData(), getProcessGroupIdentifier(), getIdentifier());
-
             final Collection<ValidationResult> validationResults = super.validate(validationContext);
 
             for (final ValidationResult result : validationResults) {
@@ -1011,8 +1009,7 @@ public class StandardProcessorNode extends ProcessorNode implements Connectable
             // Processors may go invalid while RUNNING, but only validating while STOPPED is a trade-off
             // we are willing to make in order to save on validation costs that would be unnecessary most of the time.
             if (getScheduledState() == ScheduledState.STOPPED) {
-                final ValidationContext validationContext = this.getValidationContextFactory()
+                final ValidationContext validationContext = getValidationContext();
-                        .newValidationContext(getProperties(), getAnnotationData(), getProcessGroup().getIdentifier(), getIdentifier());
 
                 final Collection<ValidationResult> validationResults = super.validate(validationContext);
 
@@ -1111,6 +1108,7 @@ public class StandardProcessorNode extends ProcessorNode implements Connectable
     @Override
     public synchronized void setProcessGroup(final ProcessGroup group) {
         this.processGroup.set(group);
+        invalidateValidationContext();
     }
 
     @Override

nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-core/src/main/java/org/apache/nifi/controller/service/StandardControllerServiceNode.java

@@ -208,6 +208,7 @@ public class StandardControllerServiceNode extends AbstractConfiguredComponent i
         writeLock.lock();
         try {
             this.processGroup = group;
+            invalidateValidationContext();
         } finally {
             writeLock.unlock();
         }

nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-core/src/main/java/org/apache/nifi/controller/service/StandardControllerServiceProvider.java

@@ -30,6 +30,8 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
 import java.util.concurrent.Future;
 import java.util.concurrent.TimeUnit;
 
@@ -79,6 +81,8 @@ public class StandardControllerServiceProvider implements ControllerServiceProvi
     private final FlowController flowController;
     private final NiFiProperties nifiProperties;
 
+    private final ConcurrentMap<String, ControllerServiceNode> serviceCache = new ConcurrentHashMap<>();
+
     public StandardControllerServiceProvider(final FlowController flowController, final ProcessScheduler scheduler, final BulletinRepository bulletinRepo,
             final StateManagerProvider stateManagerProvider, final VariableRegistry variableRegistry, final NiFiProperties nifiProperties) {
 
@@ -158,6 +162,8 @@ public class StandardControllerServiceProvider implements ControllerServiceProvi
                 }
             }
 
+            serviceCache.put(id, serviceNode);
+
             return serviceNode;
         } catch (final Throwable t) {
             throw new ControllerServiceInstantiationException(t);
@@ -222,6 +228,8 @@ public class StandardControllerServiceProvider implements ControllerServiceProvi
 
         final ControllerServiceNode serviceNode = new StandardControllerServiceNode(proxiedLoggableComponent, proxiedLoggableComponent, invocationHandler, id,
                 new StandardValidationContextFactory(this, variableRegistry), this, componentType, type, variableRegistry, flowController, true);
+
+        serviceCache.putIfAbsent(id, serviceNode);
         return serviceNode;
     }
 
@@ -459,12 +467,10 @@ public class StandardControllerServiceProvider implements ControllerServiceProvi
 
     @Override
     public ControllerService getControllerServiceForComponent(final String serviceIdentifier, final String componentId) {
-        final ProcessGroup rootGroup = getRootGroup();
-
         // Find the Process Group that owns the component.
         ProcessGroup groupOfInterest = null;
 
-        final ProcessorNode procNode = rootGroup.findProcessor(componentId);
+        final ProcessorNode procNode = flowController.getProcessorNode(componentId);
         if (procNode == null) {
             final ControllerServiceNode serviceNode = getControllerServiceNode(componentId);
             if (serviceNode == null) {
@@ -523,7 +529,7 @@ public class StandardControllerServiceProvider implements ControllerServiceProvi
             return rootServiceNode;
         }
 
-        return getRootGroup().findControllerService(serviceIdentifier);
+        return serviceCache.get(serviceIdentifier);
     }
 
     @Override
@@ -533,15 +539,16 @@ public class StandardControllerServiceProvider implements ControllerServiceProvi
             serviceNodes = flowController.getRootControllerServices();
         } else {
             ProcessGroup group = getRootGroup();
-            if (!FlowController.ROOT_GROUP_ID_ALIAS.equals(groupId) && !group.getIdentifier().equals(groupId)) {
+            if (FlowController.ROOT_GROUP_ID_ALIAS.equals(groupId) || group.getIdentifier().equals(groupId)) {
+                serviceNodes = new HashSet<>(serviceCache.values());
+            } else {
                 group = group.findProcessGroup(groupId);
-            }
+                if (group == null) {
+                    return Collections.emptySet();
+                }
 
-            if (group == null) {
+                serviceNodes = group.getControllerServices(true);
-                return Collections.emptySet();
             }
-
-            serviceNodes = group.getControllerServices(true);
         }
 
         final Set<String> identifiers = new HashSet<>();
@@ -570,13 +577,14 @@ public class StandardControllerServiceProvider implements ControllerServiceProvi
 
         group.removeControllerService(serviceNode);
         ExtensionManager.removeInstanceClassLoader(serviceNode.getIdentifier());
+        serviceCache.remove(serviceNode.getIdentifier());
     }
 
     @Override
     public Set<ControllerServiceNode> getAllControllerServices() {
         final Set<ControllerServiceNode> allServices = new HashSet<>();
         allServices.addAll(flowController.getRootControllerServices());
-        allServices.addAll(getRootGroup().findAllControllerServices());
+        allServices.addAll(serviceCache.values());
 
         return allServices;
     }

nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-core/src/main/java/org/apache/nifi/groups/StandardProcessGroup.java

@@ -405,6 +405,7 @@ public final class StandardProcessGroup implements ProcessGroup {
 
             port.setProcessGroup(this);
             inputPorts.put(requireNonNull(port).getIdentifier(), port);
+            flowController.onInputPortAdded(port);
         } finally {
             writeLock.unlock();
         }
@@ -439,6 +440,7 @@ public final class StandardProcessGroup implements ProcessGroup {
                 throw new IllegalStateException(port.getIdentifier() + " is not an Input Port of this Process Group");
             }
 
+            flowController.onInputPortRemoved(port);
             LOG.info("Input Port {} removed from flow", port);
         } finally {
             writeLock.unlock();
@@ -484,6 +486,7 @@ public final class StandardProcessGroup implements ProcessGroup {
 
             port.setProcessGroup(this);
             outputPorts.put(port.getIdentifier(), port);
+            flowController.onOutputPortAdded(port);
         } finally {
             writeLock.unlock();
         }
@@ -509,6 +512,7 @@ public final class StandardProcessGroup implements ProcessGroup {
                 throw new IllegalStateException(port.getIdentifier() + " is not an Output Port of this Process Group");
             }
 
+            flowController.onOutputPortRemoved(port);
             LOG.info("Output Port {} removed from flow", port);
         } finally {
             writeLock.unlock();
@@ -545,6 +549,7 @@ public final class StandardProcessGroup implements ProcessGroup {
         try {
             group.setParent(this);
             processGroups.put(Objects.requireNonNull(group).getIdentifier(), group);
+            flowController.onProcessGroupAdded(group);
         } finally {
             writeLock.unlock();
         }
@@ -584,6 +589,7 @@ public final class StandardProcessGroup implements ProcessGroup {
 
             removeComponents(group);
             processGroups.remove(group.getIdentifier());
+            flowController.onProcessGroupRemoved(group);
             LOG.info("{} removed from flow", group);
         } finally {
             writeLock.unlock();
@@ -704,6 +710,7 @@ public final class StandardProcessGroup implements ProcessGroup {
 
             processor.setProcessGroup(this);
             processors.put(processorId, processor);
+            flowController.onProcessorAdded(processor);
         } finally {
             writeLock.unlock();
         }
@@ -745,6 +752,7 @@ public final class StandardProcessGroup implements ProcessGroup {
             }
 
             processors.remove(id);
+            flowController.onProcessorRemoved(processor);
             LogRepositoryFactory.getRepository(processor.getIdentifier()).removeAllObservers();
 
             final StateManagerProvider stateManagerProvider = flowController.getStateManagerProvider();
@@ -884,6 +892,7 @@ public final class StandardProcessGroup implements ProcessGroup {
                 destination.addConnection(connection);
             }
             connections.put(connection.getIdentifier(), connection);
+            flowController.onConnectionAdded(connection);
         } finally {
             writeLock.unlock();
         }
@@ -943,6 +952,7 @@ public final class StandardProcessGroup implements ProcessGroup {
             // remove the connection from our map
             connections.remove(connection.getIdentifier());
             LOG.info("{} removed from flow", connection);
+            flowController.onConnectionRemoved(connection);
         } finally {
             writeLock.unlock();
         }
@@ -970,25 +980,21 @@ public final class StandardProcessGroup implements ProcessGroup {
 
     @Override
     public Connection findConnection(final String id) {
-        return findConnection(id, this);
+        final Connection connection = flowController.getConnection(id);
-    }
+        if (connection == null) {
-
+            return null;
-    private Connection findConnection(final String id, final ProcessGroup start) {
-        Connection connection = start.getConnection(id);
-        if (connection != null) {
-            return connection;
         }
 
-        for (final ProcessGroup group : start.getProcessGroups()) {
+        // We found a Connection in the Controller, but we only want to return it if
-            connection = findConnection(id, group);
+        // the Process Group is this or is a child of this.
-            if (connection != null) {
+        if (isOwner(connection.getProcessGroup())) {
-                return connection;
+            return connection;
-            }
         }
 
         return null;
     }
 
+
     @Override
     public List<Connection> findAllConnections() {
         return findAllConnections(this);
@@ -1386,19 +1392,19 @@ public final class StandardProcessGroup implements ProcessGroup {
 
     @Override
     public ProcessGroup findProcessGroup(final String id) {
-        return findProcessGroup(requireNonNull(id), this);
+        if (requireNonNull(id).equals(getIdentifier())) {
-    }
+            return this;
-
-    private ProcessGroup findProcessGroup(final String id, final ProcessGroup start) {
-        if (id.equals(start.getIdentifier())) {
-            return start;
         }
 
-        for (final ProcessGroup group : start.getProcessGroups()) {
+        final ProcessGroup group = flowController.getGroup(id);
-            final ProcessGroup matching = findProcessGroup(id, group);
+        if (group == null) {
-            if (matching != null) {
+            return null;
-                return matching;
+        }
-            }
+
+        // We found a Processor in the Controller, but we only want to return it if
+        // the Process Group is this or is a child of this.
+        if (isOwner(group.getParent())) {
+            return group;
         }
 
         return null;
@@ -1453,23 +1459,30 @@ public final class StandardProcessGroup implements ProcessGroup {
 
     @Override
     public ProcessorNode findProcessor(final String id) {
-        return findProcessor(id, this);
+        final ProcessorNode node = flowController.getProcessorNode(id);
-    }
+        if (node == null) {
+            return null;
+        }
 
-    private ProcessorNode findProcessor(final String id, final ProcessGroup start) {
+        // We found a Processor in the Controller, but we only want to return it if
-        ProcessorNode node = start.getProcessor(id);
+        // the Process Group is this or is a child of this.
-        if (node != null) {
+        if (isOwner(node.getProcessGroup())) {
             return node;
         }
 
-        for (final ProcessGroup group : start.getProcessGroups()) {
+        return null;
-            node = findProcessor(id, group);
+    }
-            if (node != null) {
+
-                return node;
+    private boolean isOwner(ProcessGroup owner) {
-            }
+        while (owner != this && owner != null) {
+            owner = owner.getParent();
         }
 
-        return null;
+        if (owner == this) {
+            return true;
+        }
+
+        return false;
     }
 
     @Override
@@ -1521,6 +1534,7 @@ public final class StandardProcessGroup implements ProcessGroup {
         return null;
     }
 
+    @Override
     public RemoteGroupPort findRemoteGroupPort(final String identifier) {
         return findRemoteGroupPort(identifier, this);
     }
@@ -1584,7 +1598,16 @@ public final class StandardProcessGroup implements ProcessGroup {
 
     @Override
     public Port findInputPort(final String id) {
-        return findPort(id, this, new InputPortRetriever());
+        final Port port = flowController.getInputPort(id);
+        if (port == null) {
+            return null;
+        }
+
+        if (isOwner(port.getProcessGroup())) {
+            return port;
+        }
+
+        return null;
     }
 
     @Override
@@ -1602,7 +1625,16 @@ public final class StandardProcessGroup implements ProcessGroup {
 
     @Override
     public Port findOutputPort(final String id) {
-        return findPort(id, this, new OutputPortRetriever());
+        final Port port = flowController.getOutputPort(id);
+        if (port == null) {
+            return null;
+        }
+
+        if (isOwner(port.getProcessGroup())) {
+            return port;
+        }
+
+        return null;
     }
 
     @Override
@@ -1674,21 +1706,6 @@ public final class StandardProcessGroup implements ProcessGroup {
         }
     }
 
-    private Port findPort(final String id, final ProcessGroup group, final PortRetriever retriever) {
-        Port port = retriever.getPort(group, id);
-        if (port != null) {
-            return port;
-        }
-
-        for (final ProcessGroup childGroup : group.getProcessGroups()) {
-            port = findPort(id, childGroup, retriever);
-            if (port != null) {
-                return port;
-            }
-        }
-
-        return null;
-    }
 
     private Port getPortByName(final String name, final ProcessGroup group, final PortRetriever retriever) {
         for (final Port port : retriever.getPorts(group)) {
@@ -1716,6 +1733,7 @@ public final class StandardProcessGroup implements ProcessGroup {
 
             funnel.setProcessGroup(this);
             funnels.put(funnel.getIdentifier(), funnel);
+            flowController.onFunnelAdded(funnel);
 
             if (autoStart) {
                 startFunnel(funnel);
@@ -1737,25 +1755,19 @@ public final class StandardProcessGroup implements ProcessGroup {
 
     @Override
     public Funnel findFunnel(final String id) {
-        return findFunnel(id, this);
+        final Funnel funnel = flowController.getFunnel(id);
-    }
+        if (funnel == null) {
-
-    private Funnel findFunnel(final String id, final ProcessGroup start) {
-        Funnel funnel = start.getFunnel(id);
-        if (funnel != null) {
             return funnel;
         }
 
-        for (final ProcessGroup group : start.getProcessGroups()) {
+        if (isOwner(funnel.getProcessGroup())) {
-            funnel = findFunnel(id, group);
+            return funnel;
-            if (funnel != null) {
-                return funnel;
-            }
         }
 
         return null;
     }
 
+
     @Override
     public ControllerServiceNode findControllerService(final String id) {
         return findControllerService(id, this);
@@ -1814,6 +1826,7 @@ public final class StandardProcessGroup implements ProcessGroup {
             }
 
             funnels.remove(funnel.getIdentifier());
+            flowController.onFunnelRemoved(funnel);
             LOG.info("{} removed from flow", funnel);
         } finally {
             writeLock.unlock();

nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-core/src/test/java/org/apache/nifi/controller/scheduling/TestStandardProcessScheduler.java

@@ -16,7 +16,27 @@
  */
 package org.apache.nifi.controller.scheduling;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
 import java.io.File;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Random;
+import java.util.UUID;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import org.apache.commons.io.FileUtils;
 import org.apache.nifi.annotation.lifecycle.OnDisabled;
 import org.apache.nifi.annotation.lifecycle.OnEnabled;
 import org.apache.nifi.annotation.lifecycle.OnScheduled;
@@ -61,29 +81,13 @@ import org.apache.nifi.reporting.ReportingInitializationContext;
 import org.apache.nifi.reporting.ReportingTask;
 import org.apache.nifi.scheduling.SchedulingStrategy;
 import org.apache.nifi.util.NiFiProperties;
+import org.junit.After;
 import org.junit.Before;
 import org.junit.Ignore;
 import org.junit.Test;
 import org.mockito.Mockito;
-
+import org.mockito.invocation.InvocationOnMock;
-import java.util.ArrayList;
+import org.mockito.stubbing.Answer;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Random;
-import java.util.UUID;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.TimeUnit;
-import java.util.concurrent.atomic.AtomicBoolean;
-import java.util.concurrent.atomic.AtomicInteger;
-import org.apache.commons.io.FileUtils;
-import org.junit.After;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
 
 public class TestStandardProcessScheduler {
 
@@ -121,7 +125,26 @@ public class TestStandardProcessScheduler {
         taskNode = new StandardReportingTaskNode(loggableComponent, UUID.randomUUID().toString(), null, scheduler, validationContextFactory, variableRegistry, reloadComponent);
 
         controller = Mockito.mock(FlowController.class);
-        rootGroup = new MockProcessGroup();
+
+        final ConcurrentMap<String, ProcessorNode> processorMap = new ConcurrentHashMap<>();
+        Mockito.doAnswer(new Answer<ProcessorNode>() {
+            @Override
+            public ProcessorNode answer(InvocationOnMock invocation) throws Throwable {
+                final String id = invocation.getArgumentAt(0, String.class);
+                return processorMap.get(id);
+            }
+        }).when(controller).getProcessorNode(Mockito.anyString());
+
+        Mockito.doAnswer(new Answer<Object>() {
+            @Override
+            public Object answer(InvocationOnMock invocation) throws Throwable {
+                final ProcessorNode procNode = invocation.getArgumentAt(0, ProcessorNode.class);
+                processorMap.putIfAbsent(procNode.getIdentifier(), procNode);
+                return null;
+            }
+        }).when(controller).onProcessorAdded(Mockito.any(ProcessorNode.class));
+
+        rootGroup = new MockProcessGroup(controller);
         Mockito.when(controller.getGroup(Mockito.anyString())).thenReturn(rootGroup);
     }
 

nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-core/src/test/java/org/apache/nifi/controller/service/TestStandardControllerServiceProvider.java

@@ -42,9 +42,12 @@ import org.apache.nifi.processor.StandardValidationContextFactory;
 import org.apache.nifi.registry.VariableRegistry;
 import org.apache.nifi.util.NiFiProperties;
 import org.junit.Assert;
+import org.junit.Before;
 import org.junit.BeforeClass;
 import org.junit.Test;
 import org.mockito.Mockito;
+import org.mockito.invocation.InvocationOnMock;
+import org.mockito.stubbing.Answer;
 
 import java.beans.PropertyDescriptor;
 import java.util.Arrays;
@@ -55,6 +58,8 @@ import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.UUID;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
@@ -88,6 +93,7 @@ public class TestStandardControllerServiceProvider {
     private static VariableRegistry variableRegistry = VariableRegistry.ENVIRONMENT_SYSTEM_REGISTRY;
     private static NiFiProperties niFiProperties;
     private static Bundle systemBundle;
+    private FlowController controller;
 
     @BeforeClass
     public static void setNiFiProps() {
@@ -99,6 +105,29 @@ public class TestStandardControllerServiceProvider {
         ExtensionManager.discoverExtensions(systemBundle, Collections.emptySet());
     }
 
+    @Before
+    public void setup() {
+        controller = Mockito.mock(FlowController.class);
+
+        final ConcurrentMap<String, ProcessorNode> processorMap = new ConcurrentHashMap<>();
+        Mockito.doAnswer(new Answer<ProcessorNode>() {
+            @Override
+            public ProcessorNode answer(InvocationOnMock invocation) throws Throwable {
+                final String id = invocation.getArgumentAt(0, String.class);
+                return processorMap.get(id);
+            }
+        }).when(controller).getProcessorNode(Mockito.anyString());
+
+        Mockito.doAnswer(new Answer<Object>() {
+            @Override
+            public Object answer(InvocationOnMock invocation) throws Throwable {
+                final ProcessorNode procNode = invocation.getArgumentAt(0, ProcessorNode.class);
+                processorMap.putIfAbsent(procNode.getIdentifier(), procNode);
+                return null;
+            }
+        }).when(controller).onProcessorAdded(Mockito.any(ProcessorNode.class));
+    }
+
     private StandardProcessScheduler createScheduler() {
         return new StandardProcessScheduler(null, null, stateManagerProvider, variableRegistry, niFiProperties);
     }
@@ -111,7 +140,7 @@ public class TestStandardControllerServiceProvider {
 
     @Test
     public void testDisableControllerService() {
-        final ProcessGroup procGroup = new MockProcessGroup();
+        final ProcessGroup procGroup = new MockProcessGroup(controller);
         final FlowController controller = Mockito.mock(FlowController.class);
         Mockito.when(controller.getGroup(Mockito.anyString())).thenReturn(procGroup);
 
@@ -127,7 +156,7 @@ public class TestStandardControllerServiceProvider {
 
     @Test(timeout = 10000)
     public void testEnableDisableWithReference() {
-        final ProcessGroup group = new MockProcessGroup();
+        final ProcessGroup group = new MockProcessGroup(controller);
         final FlowController controller = Mockito.mock(FlowController.class);
         Mockito.when(controller.getGroup(Mockito.anyString())).thenReturn(group);
 
@@ -190,7 +219,7 @@ public class TestStandardControllerServiceProvider {
     }
 
     public void testEnableReferencingServicesGraph(final ProcessScheduler scheduler) {
-        final ProcessGroup procGroup = new MockProcessGroup();
+        final ProcessGroup procGroup = new MockProcessGroup(controller);
         final FlowController controller = Mockito.mock(FlowController.class);
         Mockito.when(controller.getGroup(Mockito.anyString())).thenReturn(procGroup);
 
@@ -246,7 +275,7 @@ public class TestStandardControllerServiceProvider {
 
     @Test
     public void testOrderingOfServices() {
-        final ProcessGroup procGroup = new MockProcessGroup();
+        final ProcessGroup procGroup = new MockProcessGroup(controller);
         final FlowController controller = Mockito.mock(FlowController.class);
         Mockito.when(controller.getGroup(Mockito.anyString())).thenReturn(procGroup);
 
@@ -405,7 +434,7 @@ public class TestStandardControllerServiceProvider {
                 new StandardValidationContextFactory(serviceProvider, null), scheduler, serviceProvider, niFiProperties,
                 VariableRegistry.EMPTY_REGISTRY, reloadComponent);
 
-        final ProcessGroup group = new StandardProcessGroup(UUID.randomUUID().toString(), serviceProvider, scheduler, null, null, null, variableRegistry);
+        final ProcessGroup group = new StandardProcessGroup(UUID.randomUUID().toString(), serviceProvider, scheduler, null, null, Mockito.mock(FlowController.class), variableRegistry);
         group.addProcessor(procNode);
         procNode.setProcessGroup(group);
 
@@ -414,7 +443,7 @@ public class TestStandardControllerServiceProvider {
 
     @Test
     public void testEnableReferencingComponents() {
-        final ProcessGroup procGroup = new MockProcessGroup();
+        final ProcessGroup procGroup = new MockProcessGroup(controller);
         final FlowController controller = Mockito.mock(FlowController.class);
         Mockito.when(controller.getGroup(Mockito.anyString())).thenReturn(procGroup);
 
@@ -442,7 +471,7 @@ public class TestStandardControllerServiceProvider {
         FlowController controller = Mockito.mock(FlowController.class);
         StandardControllerServiceProvider provider =
                 new StandardControllerServiceProvider(controller, scheduler, null, stateManagerProvider, variableRegistry, niFiProperties);
-        ProcessGroup procGroup = new MockProcessGroup();
+        ProcessGroup procGroup = new MockProcessGroup(controller);
         Mockito.when(controller.getGroup(Mockito.anyString())).thenReturn(procGroup);
 
         ControllerServiceNode A = provider.createControllerService(ServiceA.class.getName(), "A",
@@ -493,7 +522,7 @@ public class TestStandardControllerServiceProvider {
         FlowController controller = Mockito.mock(FlowController.class);
         StandardControllerServiceProvider provider = new StandardControllerServiceProvider(controller, scheduler, null,
                 stateManagerProvider, variableRegistry, niFiProperties);
-        ProcessGroup procGroup = new MockProcessGroup();
+        ProcessGroup procGroup = new MockProcessGroup(controller);
         Mockito.when(controller.getGroup(Mockito.anyString())).thenReturn(procGroup);
 
         ControllerServiceNode A = provider.createControllerService(ServiceC.class.getName(), "A",
@@ -535,7 +564,7 @@ public class TestStandardControllerServiceProvider {
         FlowController controller = Mockito.mock(FlowController.class);
         StandardControllerServiceProvider provider =
                 new StandardControllerServiceProvider(controller, scheduler, null, stateManagerProvider, variableRegistry, niFiProperties);
-        ProcessGroup procGroup = new MockProcessGroup();
+        ProcessGroup procGroup = new MockProcessGroup(controller);
         Mockito.when(controller.getGroup(Mockito.anyString())).thenReturn(procGroup);
 
         ControllerServiceNode serviceNode1 = provider.createControllerService(ServiceA.class.getName(), "1",

nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-core/src/test/java/org/apache/nifi/controller/service/mock/MockProcessGroup.java

@@ -17,6 +17,13 @@
 
 package org.apache.nifi.controller.service.mock;
 
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
 import org.apache.nifi.authorization.Resource;
 import org.apache.nifi.authorization.resource.Authorizable;
 import org.apache.nifi.connectable.Connectable;
@@ -25,6 +32,7 @@ import org.apache.nifi.connectable.Funnel;
 import org.apache.nifi.connectable.Port;
 import org.apache.nifi.connectable.Position;
 import org.apache.nifi.connectable.Positionable;
+import org.apache.nifi.controller.FlowController;
 import org.apache.nifi.controller.ProcessorNode;
 import org.apache.nifi.controller.Snippet;
 import org.apache.nifi.controller.Template;
@@ -35,16 +43,14 @@ import org.apache.nifi.groups.ProcessGroupCounts;
 import org.apache.nifi.groups.RemoteProcessGroup;
 import org.apache.nifi.remote.RemoteGroupPort;
 
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
-
 public class MockProcessGroup implements ProcessGroup {
     private final Map<String, ControllerServiceNode> serviceMap = new HashMap<>();
     private final Map<String, ProcessorNode> processorMap = new HashMap<>();
+    private final FlowController flowController;
+
+    public MockProcessGroup(final FlowController flowController) {
+        this.flowController = flowController;
+    }
 
     @Override
     public Authorizable getParentAuthorizable() {
@@ -260,11 +266,13 @@ public class MockProcessGroup implements ProcessGroup {
     public void addProcessor(final ProcessorNode processor) {
         processor.setProcessGroup(this);
         processorMap.put(processor.getIdentifier(), processor);
+        flowController.onProcessorAdded(processor);
     }
 
     @Override
     public void removeProcessor(final ProcessorNode processor) {
         processorMap.remove(processor.getIdentifier());
+        flowController.onProcessorRemoved(processor);
     }
 
     @Override

nifi-nar-bundles/nifi-update-attribute-bundle/nifi-update-attribute-model/src/main/java/org/apache/nifi/update/attributes/serde/CriteriaSerDe.java

@@ -35,6 +35,15 @@ import org.apache.nifi.update.attributes.Rule;
  *
  */
 public class CriteriaSerDe {
+    private static final JAXBContext JAXB_CONTEXT;
+
+    static {
+        try {
+            JAXB_CONTEXT = JAXBContext.newInstance(CriteriaBinding.class);
+        } catch (JAXBException e) {
+            throw new RuntimeException("Could not create JAXB Context for UpdateAttribute", e);
+        }
+    }
 
     /**
      * Handles the Criteria binding during the (de)serialization process. This
@@ -86,8 +95,7 @@ public class CriteriaSerDe {
             binding.setRules(criteria.getRules());
 
             // serialize the binding
-            final JAXBContext context = JAXBContext.newInstance(CriteriaBinding.class);
+            final Marshaller marshaller = JAXB_CONTEXT.createMarshaller();
-            final Marshaller marshaller = context.createMarshaller();
             marshaller.setProperty(Marshaller.JAXB_FRAGMENT, true);
             marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
             marshaller.marshal(binding, writer);
@@ -110,8 +118,7 @@ public class CriteriaSerDe {
         if (string != null && !string.trim().equals("")) {
             try {
                 // deserialize the binding
-                final JAXBContext context = JAXBContext.newInstance(CriteriaBinding.class);
+                final Unmarshaller unmarshaller = JAXB_CONTEXT.createUnmarshaller();
-                final Unmarshaller unmarshaller = context.createUnmarshaller();
                 final Source source = new StreamSource(new StringReader(string));
                 final JAXBElement<CriteriaBinding> element = unmarshaller.unmarshal(source, CriteriaBinding.class);