Bug 8977 - Failed on binary key type
[netconf.git] / restconf / sal-rest-connector / src / main / java / org / opendaylight / netconf / sal / restconf / impl / RestconfImpl.java
index 928abe0eaf61c13431975d96de2a9bbea6d68073..19a130fafe6f921aecda5c6f30ea8e7480dd00aa 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014, 2015 Brocade Communication Systems, Inc., Cisco Systems, Inc. and others.  All rights reserved.
+ * Copyright (c) 2014 - 2016 Brocade Communication Systems, Inc., Cisco Systems, Inc. and others.  All rights reserved.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
@@ -8,36 +8,39 @@
 
 package org.opendaylight.netconf.sal.restconf.impl;
 
+import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.CharMatcher;
 import com.google.common.base.Optional;
 import com.google.common.base.Preconditions;
+import com.google.common.base.Predicates;
 import com.google.common.base.Splitter;
 import com.google.common.base.Strings;
+import com.google.common.base.Throwables;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
-import com.google.common.collect.Sets;
 import com.google.common.util.concurrent.CheckedFuture;
-import com.google.common.util.concurrent.FutureCallback;
 import com.google.common.util.concurrent.Futures;
 import java.net.URI;
-import java.net.URISyntaxException;
-import java.text.DateFormat;
 import java.text.ParseException;
-import java.text.SimpleDateFormat;
+import java.time.Instant;
+import java.time.format.DateTimeFormatter;
+import java.time.format.DateTimeFormatterBuilder;
+import java.time.format.DateTimeParseException;
+import java.time.temporal.ChronoField;
+import java.time.temporal.TemporalAccessor;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
-import java.util.Date;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
+import java.util.Objects;
 import java.util.Set;
 import java.util.concurrent.CancellationException;
-import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.ExecutionException;
 import javax.ws.rs.core.Context;
 import javax.ws.rs.core.Response;
@@ -68,7 +71,9 @@ import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.
 import org.opendaylight.yang.gen.v1.urn.sal.restconf.event.subscription.rev140708.NotificationOutputTypeGrouping.NotificationOutputType;
 import org.opendaylight.yangtools.yang.common.QName;
 import org.opendaylight.yangtools.yang.common.QNameModule;
+import org.opendaylight.yangtools.yang.common.SimpleDateFormatUtil;
 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.AugmentationIdentifier;
 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
@@ -81,6 +86,7 @@ import org.opendaylight.yangtools.yang.data.api.schema.LeafSetNode;
 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.ModifiedNodeDoesNotExistException;
 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.CollectionNodeBuilder;
@@ -102,7 +108,7 @@ import org.opendaylight.yangtools.yang.model.api.RpcDefinition;
 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
-import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.effective.EffectiveSchemaContext;
+import org.opendaylight.yangtools.yang.model.util.SimpleSchemaContext;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -117,14 +123,8 @@ public class RestconfImpl implements RestconfService {
 
     private static final int CHAR_NOT_FOUND = -1;
 
-    private static final SimpleDateFormat REVISION_FORMAT = new SimpleDateFormat("yyyy-MM-dd");
-
     private static final String SAL_REMOTE_NAMESPACE = "urn:opendaylight:params:xml:ns:yang:controller:md:sal:remote";
 
-    private BrokerFacade broker;
-
-    private ControllerContext controllerContext;
-
     private static final Logger LOG = LoggerFactory.getLogger(RestconfImpl.class);
 
     private static final DataChangeScope DEFAULT_SCOPE = DataChangeScope.BASE;
@@ -143,11 +143,24 @@ public class RestconfImpl implements RestconfService {
 
     private static final String NETCONF_BASE_PAYLOAD_NAME = "data";
 
-    private static final QName NETCONF_BASE_QNAME;
+    private static final QName NETCONF_BASE_QNAME = QName.create(QNameModule.create(URI.create(NETCONF_BASE), null),
+        NETCONF_BASE_PAYLOAD_NAME).intern();
 
     private static final QNameModule SAL_REMOTE_AUGMENT;
 
-    private static final YangInstanceIdentifier.AugmentationIdentifier SAL_REMOTE_AUG_IDENTIFIER;
+    static {
+        try {
+            SAL_REMOTE_AUGMENT = QNameModule.create(NAMESPACE_EVENT_SUBSCRIPTION_AUGMENT,
+                SimpleDateFormatUtil.getRevisionFormat().parse("2014-07-08"));
+        } catch (final ParseException e) {
+            throw new ExceptionInInitializerError(e);
+        }
+    }
+
+    private static final AugmentationIdentifier SAL_REMOTE_AUG_IDENTIFIER =
+            new AugmentationIdentifier(ImmutableSet.of(
+                QName.create(SAL_REMOTE_AUGMENT, "scope"), QName.create(SAL_REMOTE_AUGMENT, "datastore"),
+                QName.create(SAL_REMOTE_AUGMENT, "notification-output-type")));
 
     public static final CharSequence DATA_SUBSCR = "data-change-event-subscription";
     private static final CharSequence CREATE_DATA_SUBSCR = "create-" + DATA_SUBSCR;
@@ -155,24 +168,19 @@ public class RestconfImpl implements RestconfService {
     public static final CharSequence NOTIFICATION_STREAM = "notification-stream";
     private static final CharSequence CREATE_NOTIFICATION_STREAM = "create-" + NOTIFICATION_STREAM;
 
-    static {
-        try {
-            final Date eventSubscriptionAugRevision = new SimpleDateFormat("yyyy-MM-dd").parse("2014-07-08");
-            NETCONF_BASE_QNAME =
-                    QName.create(QNameModule.create(new URI(NETCONF_BASE), null), NETCONF_BASE_PAYLOAD_NAME);
-            SAL_REMOTE_AUGMENT = QNameModule.create(NAMESPACE_EVENT_SUBSCRIPTION_AUGMENT, eventSubscriptionAugRevision);
-            SAL_REMOTE_AUG_IDENTIFIER = new YangInstanceIdentifier.AugmentationIdentifier(Sets.newHashSet(
-                    QName.create(SAL_REMOTE_AUGMENT, "scope"), QName.create(SAL_REMOTE_AUGMENT, "datastore"),
-                    QName.create(SAL_REMOTE_AUGMENT, "notification-output-type")));
-        } catch (final ParseException e) {
-            final String errMsg = "It wasn't possible to convert revision date of sal-remote-augment to date";
-            LOG.debug(errMsg);
-            throw new RestconfDocumentedException(errMsg, ErrorType.APPLICATION, ErrorTag.OPERATION_FAILED);
-        } catch (final URISyntaxException e) {
-            final String errMsg = "It wasn't possible to create instance of URI class with " + NETCONF_BASE + " URI";
-            throw new RestconfDocumentedException(errMsg, ErrorType.APPLICATION, ErrorTag.OPERATION_FAILED);
-        }
-    }
+    private static final DateTimeFormatter FORMATTER = new DateTimeFormatterBuilder()
+            .appendValue(ChronoField.YEAR, 4).appendLiteral('-')
+            .appendValue(ChronoField.MONTH_OF_YEAR, 2).appendLiteral('-')
+            .appendValue(ChronoField.DAY_OF_MONTH, 2).appendLiteral('T')
+            .appendValue(ChronoField.HOUR_OF_DAY, 2).appendLiteral(':')
+            .appendValue(ChronoField.MINUTE_OF_HOUR, 2).appendLiteral(':')
+            .appendValue(ChronoField.SECOND_OF_MINUTE, 2)
+            .appendFraction(ChronoField.NANO_OF_SECOND, 0, 9, true)
+            .appendOffset("+HH:MM", "Z").toFormatter();
+
+    private BrokerFacade broker;
+
+    private ControllerContext controllerContext;
 
     public void setBroker(final BrokerFacade broker) {
         this.broker = broker;
@@ -210,7 +218,7 @@ public class RestconfImpl implements RestconfService {
     }
 
     /**
-     * Valid only for mount point
+     * Valid only for mount point.
      */
     @Override
     public NormalizedNodeContext getModules(final String identifier, final UriInfo uriInfo) {
@@ -344,12 +352,12 @@ public class RestconfImpl implements RestconfService {
      * implementations of schema nodes and module.
      *
      * @param modules
-     *            set of modules for get RPCs from every module
+     *            set of modules for get RPCs from every module
      * @param mountPoint
-     *            mount point, if in use otherwise null
+     *            mount point, if in use otherwise null
      * @return {@link NormalizedNodeContext}
      */
-    private NormalizedNodeContext operationsFromModulesToNormalizedContext(final Set<Module> modules,
+    private static NormalizedNodeContext operationsFromModulesToNormalizedContext(final Set<Module> modules,
             final DOMMountPoint mountPoint) {
 
         final Collection<Module> neededModules = new ArrayList<>(modules.size());
@@ -377,8 +385,7 @@ public class RestconfImpl implements RestconfService {
         neededModules.forEach(imp -> fakeModules.add(new FakeImportedModule(imp)));
         fakeModules.add(new FakeRestconfModule(neededModules, fakeCont));
 
-        final SchemaContext fakeSchemaCtx =
-                EffectiveSchemaContext.resolveSchemaContext(ImmutableSet.copyOf(fakeModules));
+        final SchemaContext fakeSchemaCtx = SimpleSchemaContext.forModules(ImmutableSet.copyOf(fakeModules));
         final InstanceIdentifierContext<ContainerSchemaNode> instanceIdentifierContext =
                 new InstanceIdentifierContext<>(null, fakeCont, mountPoint, fakeSchemaCtx);
         return new NormalizedNodeContext(instanceIdentifierContext, containerBuilder.build());
@@ -406,7 +413,7 @@ public class RestconfImpl implements RestconfService {
 
         final Splitter splitter = Splitter.on("/").omitEmptyStrings();
         final Iterable<String> split = splitter.split(moduleNameAndRevision);
-        final List<String> pathArgs = Lists.<String> newArrayList(split);
+        final List<String> pathArgs = Lists.<String>newArrayList(split);
         if (pathArgs.size() < 2) {
             LOG.debug("URI has bad format. It should be \'moduleName/yyyy-MM-dd\' " + identifier);
             throw new RestconfDocumentedException(
@@ -417,8 +424,7 @@ public class RestconfImpl implements RestconfService {
         try {
             final String moduleName = pathArgs.get(0);
             final String revision = pathArgs.get(1);
-            final Date moduleRevision = REVISION_FORMAT.parse(revision);
-            return QName.create(null, moduleRevision, moduleName);
+            return QName.create(null, SimpleDateFormatUtil.getRevisionFormat().parse(revision), moduleName);
         } catch (final ParseException e) {
             LOG.debug("URI has bad format. It should be \'moduleName/yyyy-MM-dd\' " + identifier);
             throw new RestconfDocumentedException("URI has bad format. It should be \'moduleName/yyyy-MM-dd\'",
@@ -469,22 +475,90 @@ public class RestconfImpl implements RestconfService {
 
         RpcDefinition resultNodeSchema = null;
         final NormalizedNode<?, ?> resultData = result.getResult();
-        if ((result != null) && (result.getResult() != null)) {
+        if (result != null && result.getResult() != null) {
             resultNodeSchema = (RpcDefinition) payload.getInstanceIdentifierContext().getSchemaNode();
         }
 
         return new NormalizedNodeContext(
-                new InstanceIdentifierContext<RpcDefinition>(null, resultNodeSchema, mountPoint, schemaContext),
+                new InstanceIdentifierContext<>(null, resultNodeSchema, mountPoint, schemaContext),
                 resultData, QueryParametersParser.parseWriterParameters(uriInfo));
     }
 
+    @Override
+    public NormalizedNodeContext invokeRpc(final String identifier, final String noPayload, final UriInfo uriInfo) {
+        if (noPayload != null && !CharMatcher.WHITESPACE.matchesAllOf(noPayload)) {
+            throw new RestconfDocumentedException("Content must be empty.", ErrorType.PROTOCOL, ErrorTag.INVALID_VALUE);
+        }
+
+        String identifierEncoded = null;
+        DOMMountPoint mountPoint = null;
+        final SchemaContext schemaContext;
+        if (identifier.contains(ControllerContext.MOUNT)) {
+            // mounted RPC call - look up mount instance.
+            final InstanceIdentifierContext<?> mountPointId = this.controllerContext.toMountPointIdentifier(identifier);
+            mountPoint = mountPointId.getMountPoint();
+            schemaContext = mountPoint.getSchemaContext();
+            final int startOfRemoteRpcName =
+                    identifier.lastIndexOf(ControllerContext.MOUNT) + ControllerContext.MOUNT.length() + 1;
+            final String remoteRpcName = identifier.substring(startOfRemoteRpcName);
+            identifierEncoded = remoteRpcName;
+
+        } else if (identifier.indexOf("/") != CHAR_NOT_FOUND) {
+            final String slashErrorMsg = String.format(
+                    "Identifier %n%s%ncan\'t contain slash "
+                            + "character (/).%nIf slash is part of identifier name then use %%2F placeholder.",
+                    identifier);
+            LOG.debug(slashErrorMsg);
+            throw new RestconfDocumentedException(slashErrorMsg, ErrorType.PROTOCOL, ErrorTag.INVALID_VALUE);
+        } else {
+            identifierEncoded = identifier;
+            schemaContext = this.controllerContext.getGlobalSchema();
+        }
+
+        final String identifierDecoded = this.controllerContext.urlPathArgDecode(identifierEncoded);
+
+        RpcDefinition rpc = null;
+        if (mountPoint == null) {
+            rpc = this.controllerContext.getRpcDefinition(identifierDecoded, null);
+        } else {
+            rpc = findRpc(mountPoint.getSchemaContext(), identifierDecoded);
+        }
+
+        if (rpc == null) {
+            LOG.debug("RPC " + identifierDecoded + " does not exist.");
+            throw new RestconfDocumentedException("RPC does not exist.", ErrorType.RPC, ErrorTag.UNKNOWN_ELEMENT);
+        }
+
+        if (!rpc.getInput().getChildNodes().isEmpty()) {
+            LOG.debug("RPC " + rpc + " does not need input value.");
+            // FIXME : find a correct Error from specification
+            throw new IllegalStateException("RPC " + rpc + " does'n need input value!");
+        }
+
+        final CheckedFuture<DOMRpcResult, DOMRpcException> response;
+        if (mountPoint != null) {
+            final Optional<DOMRpcService> mountRpcServices = mountPoint.getService(DOMRpcService.class);
+            if (!mountRpcServices.isPresent()) {
+                throw new RestconfDocumentedException("Rpc service is missing.");
+            }
+            response = mountRpcServices.get().invokeRpc(rpc.getPath(), null);
+        } else {
+            response = this.broker.invokeRpc(rpc.getPath(), null);
+        }
+
+        final DOMRpcResult result = checkRpcResponse(response);
+
+        return new NormalizedNodeContext(new InstanceIdentifierContext<>(null, rpc, mountPoint, schemaContext),
+                result.getResult(), QueryParametersParser.parseWriterParameters(uriInfo));
+    }
+
     private static DOMRpcResult checkRpcResponse(final CheckedFuture<DOMRpcResult, DOMRpcException> response) {
         if (response == null) {
             return null;
         }
         try {
             final DOMRpcResult retValue = response.get();
-            if ((retValue.getErrors() == null) || retValue.getErrors().isEmpty()) {
+            if (retValue.getErrors() == null || retValue.getErrors().isEmpty()) {
                 return retValue;
             }
             LOG.debug("RpcError message", retValue.getErrors());
@@ -522,10 +596,10 @@ public class RestconfImpl implements RestconfService {
     }
 
     private static void validateInput(final SchemaNode inputSchema, final NormalizedNodeContext payload) {
-        if ((inputSchema != null) && (payload.getData() == null)) {
+        if (inputSchema != null && payload.getData() == null) {
             // expected a non null payload
             throw new RestconfDocumentedException("Input is required.", ErrorType.PROTOCOL, ErrorTag.MALFORMED_MESSAGE);
-        } else if ((inputSchema == null) && (payload.getData() != null)) {
+        } else if (inputSchema == null && payload.getData() != null) {
             // did not expect any input
             throw new RestconfDocumentedException("No input expected.", ErrorType.PROTOCOL, ErrorTag.MALFORMED_MESSAGE);
         }
@@ -545,7 +619,7 @@ public class RestconfImpl implements RestconfService {
             throw new RestconfDocumentedException(errMsg, ErrorType.APPLICATION, ErrorTag.OPERATION_FAILED);
         }
 
-        final YangInstanceIdentifier pathIdentifier = ((YangInstanceIdentifier) pathValue);
+        final YangInstanceIdentifier pathIdentifier = (YangInstanceIdentifier) pathValue;
         String streamName = (String) CREATE_DATA_SUBSCR;
         NotificationOutputType outputType = null;
         if (!pathIdentifier.isEmpty()) {
@@ -588,74 +662,6 @@ public class RestconfImpl implements RestconfService {
         return Futures.immediateCheckedFuture(defaultDOMRpcResult);
     }
 
-    @Override
-    public NormalizedNodeContext invokeRpc(final String identifier, final String noPayload, final UriInfo uriInfo) {
-        if ((noPayload != null) && !CharMatcher.WHITESPACE.matchesAllOf(noPayload)) {
-            throw new RestconfDocumentedException("Content must be empty.", ErrorType.PROTOCOL, ErrorTag.INVALID_VALUE);
-        }
-
-        String identifierEncoded = null;
-        DOMMountPoint mountPoint = null;
-        final SchemaContext schemaContext;
-        if (identifier.contains(ControllerContext.MOUNT)) {
-            // mounted RPC call - look up mount instance.
-            final InstanceIdentifierContext<?> mountPointId = this.controllerContext.toMountPointIdentifier(identifier);
-            mountPoint = mountPointId.getMountPoint();
-            schemaContext = mountPoint.getSchemaContext();
-            final int startOfRemoteRpcName =
-                    identifier.lastIndexOf(ControllerContext.MOUNT) + ControllerContext.MOUNT.length() + 1;
-            final String remoteRpcName = identifier.substring(startOfRemoteRpcName);
-            identifierEncoded = remoteRpcName;
-
-        } else if (identifier.indexOf("/") != CHAR_NOT_FOUND) {
-            final String slashErrorMsg = String.format(
-                    "Identifier %n%s%ncan\'t contain slash "
-                            + "character (/).%nIf slash is part of identifier name then use %%2F placeholder.",
-                    identifier);
-            LOG.debug(slashErrorMsg);
-            throw new RestconfDocumentedException(slashErrorMsg, ErrorType.PROTOCOL, ErrorTag.INVALID_VALUE);
-        } else {
-            identifierEncoded = identifier;
-            schemaContext = this.controllerContext.getGlobalSchema();
-        }
-
-        final String identifierDecoded = this.controllerContext.urlPathArgDecode(identifierEncoded);
-
-        RpcDefinition rpc = null;
-        if (mountPoint == null) {
-            rpc = this.controllerContext.getRpcDefinition(identifierDecoded, null);
-        } else {
-            rpc = findRpc(mountPoint.getSchemaContext(), identifierDecoded);
-        }
-
-        if (rpc == null) {
-            LOG.debug("RPC " + identifierDecoded + " does not exist.");
-            throw new RestconfDocumentedException("RPC does not exist.", ErrorType.RPC, ErrorTag.UNKNOWN_ELEMENT);
-        }
-
-        if (rpc.getInput() != null) {
-            LOG.debug("RPC " + rpc + " does not need input value.");
-            // FIXME : find a correct Error from specification
-            throw new IllegalStateException("RPC " + rpc + " does'n need input value!");
-        }
-
-        final CheckedFuture<DOMRpcResult, DOMRpcException> response;
-        if (mountPoint != null) {
-            final Optional<DOMRpcService> mountRpcServices = mountPoint.getService(DOMRpcService.class);
-            if (!mountRpcServices.isPresent()) {
-                throw new RestconfDocumentedException("Rpc service is missing.");
-            }
-            response = mountRpcServices.get().invokeRpc(rpc.getPath(), null);
-        } else {
-            response = this.broker.invokeRpc(rpc.getPath(), null);
-        }
-
-        final DOMRpcResult result = checkRpcResponse(response);
-
-        return new NormalizedNodeContext(new InstanceIdentifierContext<>(null, rpc, mountPoint, schemaContext),
-                result.getResult(), QueryParametersParser.parseWriterParameters(uriInfo));
-    }
-
     private static RpcDefinition findRpc(final SchemaContext schemaContext, final String identifierDecoded) {
         final String[] splittedIdentifier = identifierDecoded.split(":");
         if (splittedIdentifier.length != 2) {
@@ -677,23 +683,26 @@ public class RestconfImpl implements RestconfService {
 
     @Override
     public NormalizedNodeContext readConfigurationData(final String identifier, final UriInfo uriInfo) {
-        boolean withDefa_used = false;
+        boolean withDefaUsed = false;
         String withDefa = null;
 
         for (final Entry<String, List<String>> entry : uriInfo.getQueryParameters().entrySet()) {
             switch (entry.getKey()) {
                 case "with-defaults":
-                    if (!withDefa_used) {
-                        withDefa_used = true;
+                    if (!withDefaUsed) {
+                        withDefaUsed = true;
                         withDefa = entry.getValue().iterator().next();
                     } else {
                         throw new RestconfDocumentedException("With-defaults parameter can be used only once.");
                     }
                     break;
+                default:
+                    LOG.info("Unknown key : {}.", entry.getKey());
+                    break;
             }
         }
         boolean tagged = false;
-        if (withDefa_used) {
+        if (withDefaUsed) {
             if (withDefa.equals("report-all-tagged")) {
                 tagged = true;
                 withDefa = null;
@@ -745,24 +754,24 @@ public class RestconfImpl implements RestconfService {
     @Override
     public Response updateConfigurationData(final String identifier, final NormalizedNodeContext payload,
             final UriInfo uriInfo) {
-        boolean insert_used = false;
-        boolean point_used = false;
+        boolean insertUsed = false;
+        boolean pointUsed = false;
         String insert = null;
         String point = null;
 
         for (final Entry<String, List<String>> entry : uriInfo.getQueryParameters().entrySet()) {
             switch (entry.getKey()) {
                 case "insert":
-                    if (!insert_used) {
-                        insert_used = true;
+                    if (!insertUsed) {
+                        insertUsed = true;
                         insert = entry.getValue().iterator().next();
                     } else {
                         throw new RestconfDocumentedException("Insert parameter can be used only once.");
                     }
                     break;
                 case "point":
-                    if (!point_used) {
-                        point_used = true;
+                    if (!pointUsed) {
+                        pointUsed = true;
                         point = entry.getValue().iterator().next();
                     } else {
                         throw new RestconfDocumentedException("Point parameter can be used only once.");
@@ -773,10 +782,10 @@ public class RestconfImpl implements RestconfService {
             }
         }
 
-        if (point_used && !insert_used) {
+        if (pointUsed && !insertUsed) {
             throw new RestconfDocumentedException("Point parameter can't be used without Insert parameter.");
         }
-        if (point_used && (insert.equals("first") || insert.equals("last"))) {
+        if (pointUsed && (insert.equals("first") || insert.equals("last"))) {
             throw new RestconfDocumentedException(
                     "Point parameter can be used only with 'after' or 'before' values of Insert parameter.");
         }
@@ -809,7 +818,7 @@ public class RestconfImpl implements RestconfService {
          * (and having to document the behavior).
          */
         PutResult result = null;
-        final TryOfPutData tryPutData = new TryOfPutData();
+        int tries = 2;
         while (true) {
             if (mountPoint != null) {
 
@@ -819,56 +828,23 @@ public class RestconfImpl implements RestconfService {
                 result = this.broker.commitConfigurationDataPut(this.controllerContext.getGlobalSchema(), normalizedII,
                         payload.getData(), insert, point);
             }
-            final CountDownLatch waiter = new CountDownLatch(1);
-            Futures.addCallback(result.getFutureOfPutData(), new FutureCallback<Void>() {
-
-                @Override
-                public void onSuccess(final Void result) {
-                    handlingLoggerPut(null, tryPutData, identifier);
-                    waiter.countDown();
-                }
-
-                @Override
-                public void onFailure(final Throwable t) {
-                    waiter.countDown();
-                    handlingLoggerPut(t, tryPutData, identifier);
-                }
-            });
 
             try {
-                waiter.await();
-            } catch (final Exception e) {
-                final String msg = "Problem while waiting for response";
-                LOG.warn(msg);
-                throw new RestconfDocumentedException(msg, e);
-            }
-
-            if (tryPutData.isDone()) {
-                break;
-            } else {
-                throw new RestconfDocumentedException("Problem while PUT operations");
-            }
-        }
-
-        return Response.status(result.getStatus()).build();
-    }
+                result.getFutureOfPutData().checkedGet();
+                return Response.status(result.getStatus()).build();
+            } catch (final TransactionCommitFailedException e) {
+                if (e instanceof OptimisticLockFailedException) {
+                    if (--tries <= 0) {
+                        LOG.debug("Got OptimisticLockFailedException on last try - failing " + identifier);
+                        throw new RestconfDocumentedException(e.getMessage(), e, e.getErrorList());
+                    }
 
-    protected void handlingLoggerPut(final Throwable t, final TryOfPutData tryPutData, final String identifier) {
-        if (t != null) {
-            if (t instanceof OptimisticLockFailedException) {
-                if (tryPutData.countGet() <= 0) {
-                    LOG.debug("Got OptimisticLockFailedException on last try - failing " + identifier);
-                    throw new RestconfDocumentedException(t.getMessage(), t);
+                    LOG.debug("Got OptimisticLockFailedException - trying again " + identifier);
+                } else {
+                    LOG.debug("Update failed for " + identifier, e);
+                    throw new RestconfDocumentedException(e.getMessage(), e, e.getErrorList());
                 }
-                LOG.debug("Got OptimisticLockFailedException - trying again " + identifier);
-                tryPutData.countDown();
-            } else {
-                LOG.debug("Update ConfigDataStore fail " + identifier, t);
-                throw new RestconfDocumentedException(t.getMessage(), t);
             }
-        } else {
-            LOG.trace("PUT Successful " + identifier);
-            tryPutData.done();
         }
     }
 
@@ -897,7 +873,7 @@ public class RestconfImpl implements RestconfService {
 
     /**
      * Validates whether keys in {@code payload} are equal to values of keys in
-     * {@code iiWithData} for list schema node
+     * {@code iiWithData} for list schema node.
      *
      * @throws RestconfDocumentedException
      *             if key values or key count in payload and URI isn't equal
@@ -911,7 +887,7 @@ public class RestconfImpl implements RestconfService {
         final NormalizedNode<?, ?> data = payload.getData();
         if (schemaNode instanceof ListSchemaNode) {
             final List<QName> keyDefinitions = ((ListSchemaNode) schemaNode).getKeyDefinition();
-            if ((lastPathArgument instanceof NodeIdentifierWithPredicates) && (data instanceof MapEntryNode)) {
+            if (lastPathArgument instanceof NodeIdentifierWithPredicates && data instanceof MapEntryNode) {
                 final Map<QName, Object> uriKeyValues =
                         ((NodeIdentifierWithPredicates) lastPathArgument).getKeyValues();
                 isEqualUriAndPayloadKeyValues(uriKeyValues, (MapEntryNode) data, keyDefinitions);
@@ -919,7 +895,8 @@ public class RestconfImpl implements RestconfService {
         }
     }
 
-    private static void isEqualUriAndPayloadKeyValues(final Map<QName, Object> uriKeyValues, final MapEntryNode payload,
+    @VisibleForTesting
+    public static void isEqualUriAndPayloadKeyValues(final Map<QName, Object> uriKeyValues, final MapEntryNode payload,
             final List<QName> keyDefinitions) {
 
         final Map<QName, Object> mutableCopyUriKeyValues = Maps.newHashMap(uriKeyValues);
@@ -931,7 +908,7 @@ public class RestconfImpl implements RestconfService {
 
             final Object dataKeyValue = payload.getIdentifier().getKeyValues().get(keyDefinition);
 
-            if (!uriKeyValue.equals(dataKeyValue)) {
+            if (!Objects.deepEquals(uriKeyValue, dataKeyValue)) {
                 final String errMsg = "The value '" + uriKeyValue + "' for key '" + keyDefinition.getLocalName()
                         + "' specified in the URI doesn't match the value '" + dataKeyValue
                         + "' specified in the message body. ";
@@ -946,37 +923,6 @@ public class RestconfImpl implements RestconfService {
         return createConfigurationData(payload, uriInfo);
     }
 
-    // FIXME create RestconfIdetifierHelper and move this method there
-    private static YangInstanceIdentifier checkConsistencyOfNormalizedNodeContext(final NormalizedNodeContext payload) {
-        Preconditions.checkArgument(payload != null);
-        Preconditions.checkArgument(payload.getData() != null);
-        Preconditions.checkArgument(payload.getData().getNodeType() != null);
-        Preconditions.checkArgument(payload.getInstanceIdentifierContext() != null);
-        Preconditions.checkArgument(payload.getInstanceIdentifierContext().getInstanceIdentifier() != null);
-
-        final QName payloadNodeQname = payload.getData().getNodeType();
-        final YangInstanceIdentifier yangIdent = payload.getInstanceIdentifierContext().getInstanceIdentifier();
-        if (payloadNodeQname.compareTo(yangIdent.getLastPathArgument().getNodeType()) > 0) {
-            return yangIdent;
-        }
-        final InstanceIdentifierContext<?> parentContext = payload.getInstanceIdentifierContext();
-        final SchemaNode parentSchemaNode = parentContext.getSchemaNode();
-        if (parentSchemaNode instanceof DataNodeContainer) {
-            final DataNodeContainer cast = (DataNodeContainer) parentSchemaNode;
-            for (final DataSchemaNode child : cast.getChildNodes()) {
-                if (payloadNodeQname.compareTo(child.getQName()) == 0) {
-                    return YangInstanceIdentifier.builder(yangIdent).node(child.getQName()).build();
-                }
-            }
-        }
-        if (parentSchemaNode instanceof RpcDefinition) {
-            return yangIdent;
-        }
-        final String errMsg = "Error parsing input: DataSchemaNode has not children ";
-        LOG.info(errMsg + yangIdent);
-        throw new RestconfDocumentedException(errMsg, ErrorType.PROTOCOL, ErrorTag.MALFORMED_MESSAGE);
-    }
-
     @Override
     public Response createConfigurationData(final NormalizedNodeContext payload, final UriInfo uriInfo) {
         if (payload == null) {
@@ -986,24 +932,24 @@ public class RestconfImpl implements RestconfService {
         final InstanceIdentifierContext<?> iiWithData = payload.getInstanceIdentifierContext();
         final YangInstanceIdentifier normalizedII = iiWithData.getInstanceIdentifier();
 
-        boolean insert_used = false;
-        boolean point_used = false;
+        boolean insertUsed = false;
+        boolean pointUsed = false;
         String insert = null;
         String point = null;
 
         for (final Entry<String, List<String>> entry : uriInfo.getQueryParameters().entrySet()) {
             switch (entry.getKey()) {
                 case "insert":
-                    if (!insert_used) {
-                        insert_used = true;
+                    if (!insertUsed) {
+                        insertUsed = true;
                         insert = entry.getValue().iterator().next();
                     } else {
                         throw new RestconfDocumentedException("Insert parameter can be used only once.");
                     }
                     break;
                 case "point":
-                    if (!point_used) {
-                        point_used = true;
+                    if (!pointUsed) {
+                        pointUsed = true;
                         point = entry.getValue().iterator().next();
                     } else {
                         throw new RestconfDocumentedException("Point parameter can be used only once.");
@@ -1014,10 +960,10 @@ public class RestconfImpl implements RestconfService {
             }
         }
 
-        if (point_used && !insert_used) {
+        if (pointUsed && !insertUsed) {
             throw new RestconfDocumentedException("Point parameter can't be used without Insert parameter.");
         }
-        if (point_used && (insert.equals("first") || insert.equals("last"))) {
+        if (pointUsed && (insert.equals("first") || insert.equals("last"))) {
             throw new RestconfDocumentedException(
                     "Point parameter can be used only with 'after' or 'before' values of Insert parameter.");
         }
@@ -1031,30 +977,17 @@ public class RestconfImpl implements RestconfService {
                     payload.getData(), insert, point);
         }
 
-        final CountDownLatch waiter = new CountDownLatch(1);
-        Futures.addCallback(future, new FutureCallback<Void>() {
-
-            @Override
-            public void onSuccess(final Void result) {
-                handlerLoggerPost(null, uriInfo);
-                waiter.countDown();
-            }
-
-            @Override
-            public void onFailure(final Throwable t) {
-                waiter.countDown();
-                handlerLoggerPost(t, uriInfo);
-            }
-        });
-
         try {
-            waiter.await();
-        } catch (final Exception e) {
-            final String msg = "Problem while waiting for response";
-            LOG.warn(msg);
-            throw new RestconfDocumentedException(msg, e);
+            future.checkedGet();
+        } catch (final RestconfDocumentedException e) {
+            throw e;
+        } catch (final TransactionCommitFailedException e) {
+            LOG.info("Error creating data " + (uriInfo != null ? uriInfo.getPath() : ""), e);
+            throw new RestconfDocumentedException(e.getMessage(), e, e.getErrorList());
         }
 
+        LOG.trace("Successfuly created data.");
+
         final ResponseBuilder responseBuilder = Response.status(Status.NO_CONTENT);
         // FIXME: Provide path to result.
         final URI location = resolveLocation(uriInfo, "", mountPoint, normalizedII);
@@ -1064,16 +997,38 @@ public class RestconfImpl implements RestconfService {
         return responseBuilder.build();
     }
 
-    protected void handlerLoggerPost(final Throwable t, final UriInfo uriInfo) {
-        if (t != null) {
-            final String errMsg = "Error creating data ";
-            LOG.warn(errMsg + (uriInfo != null ? uriInfo.getPath() : ""), t);
-            throw new RestconfDocumentedException(errMsg, t);
-        } else {
-            LOG.trace("Successfuly create data.");
+    // FIXME create RestconfIdetifierHelper and move this method there
+    private static YangInstanceIdentifier checkConsistencyOfNormalizedNodeContext(final NormalizedNodeContext payload) {
+        Preconditions.checkArgument(payload != null);
+        Preconditions.checkArgument(payload.getData() != null);
+        Preconditions.checkArgument(payload.getData().getNodeType() != null);
+        Preconditions.checkArgument(payload.getInstanceIdentifierContext() != null);
+        Preconditions.checkArgument(payload.getInstanceIdentifierContext().getInstanceIdentifier() != null);
+
+        final QName payloadNodeQname = payload.getData().getNodeType();
+        final YangInstanceIdentifier yangIdent = payload.getInstanceIdentifierContext().getInstanceIdentifier();
+        if (payloadNodeQname.compareTo(yangIdent.getLastPathArgument().getNodeType()) > 0) {
+            return yangIdent;
         }
+        final InstanceIdentifierContext<?> parentContext = payload.getInstanceIdentifierContext();
+        final SchemaNode parentSchemaNode = parentContext.getSchemaNode();
+        if (parentSchemaNode instanceof DataNodeContainer) {
+            final DataNodeContainer cast = (DataNodeContainer) parentSchemaNode;
+            for (final DataSchemaNode child : cast.getChildNodes()) {
+                if (payloadNodeQname.compareTo(child.getQName()) == 0) {
+                    return YangInstanceIdentifier.builder(yangIdent).node(child.getQName()).build();
+                }
+            }
+        }
+        if (parentSchemaNode instanceof RpcDefinition) {
+            return yangIdent;
+        }
+        final String errMsg = "Error parsing input: DataSchemaNode has not children ";
+        LOG.info(errMsg + yangIdent);
+        throw new RestconfDocumentedException(errMsg, ErrorType.PROTOCOL, ErrorTag.MALFORMED_MESSAGE);
     }
 
+    @SuppressWarnings("checkstyle:IllegalCatch")
     private URI resolveLocation(final UriInfo uriInfo, final String uriBehindBase, final DOMMountPoint mountPoint,
             final YangInstanceIdentifier normalizedII) {
         if (uriInfo == null) {
@@ -1105,57 +1060,29 @@ public class RestconfImpl implements RestconfService {
             future = this.broker.commitConfigurationDataDelete(normalizedII);
         }
 
-        final CountDownLatch waiter = new CountDownLatch(1);
-        final ResultOperation result = new ResultOperation();
-        Futures.addCallback(future, new FutureCallback<Void>() {
-
-            @Override
-            public void onSuccess(final Void result) {
-                LOG.trace("Successfuly delete data.");
-                waiter.countDown();
-            }
-
-            @Override
-            public void onFailure(final Throwable t) {
-                waiter.countDown();
-                result.setFailed(t);
+        try {
+            future.checkedGet();
+        } catch (final TransactionCommitFailedException e) {
+            final Optional<Throwable> searchedException = Iterables.tryFind(Throwables.getCausalChain(e),
+                    Predicates.instanceOf(ModifiedNodeDoesNotExistException.class));
+            if (searchedException.isPresent()) {
+                throw new RestconfDocumentedException("Data specified for delete doesn't exist.", ErrorType.APPLICATION,
+                        ErrorTag.DATA_MISSING);
             }
 
-        });
-
-        try {
-            waiter.await();
-        } catch (final Exception e) {
-            final String msg = "Problem while waiting for response";
-            LOG.warn(msg);
-            throw new RestconfDocumentedException(msg, e);
-        }
-        if (result.failed() != null) {
-            final Throwable t = result.failed();
             final String errMsg = "Error while deleting data";
-            LOG.info(errMsg, t);
-            throw new RestconfDocumentedException(errMsg, RestconfError.ErrorType.APPLICATION,
-                    RestconfError.ErrorTag.OPERATION_FAILED, t);
+            LOG.info(errMsg, e);
+            throw new RestconfDocumentedException(e.getMessage(), e, e.getErrorList());
         }
-        return Response.status(Status.OK).build();
-    }
 
-    private class ResultOperation {
-        private Throwable t = null;
-
-        public void setFailed(final Throwable t) {
-            this.t = t;
-        }
-
-        public Throwable failed() {
-            return this.t;
-        }
+        return Response.status(Status.OK).build();
     }
 
     /**
      * Subscribes to some path in schema context (stream) to listen on changes
      * on this stream.
      *
+     * <p>
      * Additional parameters for subscribing to stream are loaded via rpc input
      * parameters:
      * <ul>
@@ -1166,49 +1093,59 @@ public class RestconfImpl implements RestconfService {
      */
     @Override
     public NormalizedNodeContext subscribeToStream(final String identifier, final UriInfo uriInfo) {
-        boolean startTime_used = false;
-        boolean stopTime_used = false;
-        boolean filter_used = false;
-        Date start = null;
-        Date stop = null;
+        boolean startTimeUsed = false;
+        boolean stopTimeUsed = false;
+        Instant start = Instant.now();
+        Instant stop = null;
+        boolean filterUsed = false;
         String filter = null;
+        boolean leafNodesOnlyUsed = false;
+        boolean leafNodesOnly = false;
 
         for (final Entry<String, List<String>> entry : uriInfo.getQueryParameters().entrySet()) {
             switch (entry.getKey()) {
                 case "start-time":
-                    if (!startTime_used) {
-                        startTime_used = true;
+                    if (!startTimeUsed) {
+                        startTimeUsed = true;
                         start = parseDateFromQueryParam(entry);
                     } else {
                         throw new RestconfDocumentedException("Start-time parameter can be used only once.");
                     }
                     break;
                 case "stop-time":
-                    if (!stopTime_used) {
-                        stopTime_used = true;
+                    if (!stopTimeUsed) {
+                        stopTimeUsed = true;
                         stop = parseDateFromQueryParam(entry);
                     } else {
                         throw new RestconfDocumentedException("Stop-time parameter can be used only once.");
                     }
                     break;
                 case "filter":
-                    if (!filter_used) {
-                        filter_used = true;
+                    if (!filterUsed) {
+                        filterUsed = true;
                         filter = entry.getValue().iterator().next();
                     } else {
                         throw new RestconfDocumentedException("Filter parameter can be used only once.");
                     }
                     break;
+                case "odl-leaf-nodes-only":
+                    if (!leafNodesOnlyUsed) {
+                        leafNodesOnlyUsed = true;
+                        leafNodesOnly = Boolean.parseBoolean(entry.getValue().iterator().next());
+                    } else {
+                        throw new RestconfDocumentedException("Odl-leaf-nodes-only parameter can be used only once.");
+                    }
+                    break;
                 default:
                     throw new RestconfDocumentedException("Bad parameter used with notifications: " + entry.getKey());
             }
         }
-        if (!startTime_used && stopTime_used) {
+        if (!startTimeUsed && stopTimeUsed) {
             throw new RestconfDocumentedException("Stop-time parameter has to be used with start-time parameter.");
         }
         URI response = null;
         if (identifier.contains(DATA_SUBSCR)) {
-            response = dataSubs(identifier, uriInfo, start, stop, filter);
+            response = dataSubs(identifier, uriInfo, start, stop, filter, leafNodesOnly);
         } else if (identifier.contains(NOTIFICATION_STREAM)) {
             response = notifStream(identifier, uriInfo, start, stop, filter);
         }
@@ -1233,37 +1170,25 @@ public class RestconfImpl implements RestconfService {
         throw new RestconfDocumentedException(msg);
     }
 
-    private Date parseDateFromQueryParam(final Entry<String, List<String>> entry) {
+    private static Instant parseDateFromQueryParam(final Entry<String, List<String>> entry) {
         final DateAndTime event = new DateAndTime(entry.getValue().iterator().next());
-        String numOf_ms = "";
         final String value = event.getValue();
-        if (value.contains(".")) {
-            numOf_ms = numOf_ms + ".";
-            final int lastChar = value.contains("Z") ? value.indexOf("Z") : (value.contains("+") ? value.indexOf("+")
-                    : (value.contains("-") ? value.indexOf("-") : value.length()));
-            for (int i = 0; i < (lastChar - value.indexOf(".") - 1); i++) {
-                numOf_ms = numOf_ms + "S";
-            }
-        }
-        String zone = "";
-        if (!value.contains("Z")) {
-            zone = zone + "XXX";
-        }
-        final DateFormat dateFormatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss" + numOf_ms + zone);
-
+        final TemporalAccessor p;
         try {
-            return dateFormatter.parse(value.contains("Z") ? value.replace('T', ' ').substring(0, value.indexOf("Z"))
-                    : value.replace('T', ' '));
-        } catch (final ParseException e) {
-            throw new RestconfDocumentedException("Cannot parse of value in date: " + value + e);
+            p = FORMATTER.parse(value);
+        } catch (final DateTimeParseException e) {
+            throw new RestconfDocumentedException("Cannot parse of value in date: " + value, e);
         }
+        return Instant.from(p);
     }
 
     /**
+     * Prepare instance identifier.
+     *
      * @return {@link InstanceIdentifierContext} of location leaf for
      *         notification
      */
-    private InstanceIdentifierContext<?> prepareIIDSubsStreamOutput() {
+    private static InstanceIdentifierContext<?> prepareIIDSubsStreamOutput() {
         final QName qnameBase = QName.create("subscribe:to:notification", "2016-10-28", "notifi");
         final SchemaContext schemaCtx = ControllerContext.getInstance().getGlobalSchema();
         final DataSchemaNode location = ((ContainerSchemaNode) schemaCtx
@@ -1278,35 +1203,36 @@ public class RestconfImpl implements RestconfService {
     }
 
     /**
-     * Register notification listener by stream name
+     * Register notification listener by stream name.
      *
      * @param identifier
-     *            stream name
+     *            stream name
      * @param uriInfo
-     *            uriInfo
+     *            uriInfo
      * @param stop
-     *            stop-time of getting notification
+     *            stop-time of getting notification
      * @param start
-     *            start-time of getting notification
+     *            start-time of getting notification
      * @param filter
-     *            - indicate wh ich subset of allpossible events are of interest
+     *            indicate which subset of all possible events are of interest
      * @return {@link URI} of location
      */
-    private URI notifStream(final String identifier, final UriInfo uriInfo, final Date start, final Date stop,
-            final String filter) {
+    private URI notifStream(final String identifier, final UriInfo uriInfo, final Instant start,
+            final Instant stop, final String filter) {
         final String streamName = Notificator.createStreamNameFromUri(identifier);
         if (Strings.isNullOrEmpty(streamName)) {
             throw new RestconfDocumentedException("Stream name is empty.", ErrorType.PROTOCOL, ErrorTag.INVALID_VALUE);
         }
         final List<NotificationListenerAdapter> listeners = Notificator.getNotificationListenerFor(streamName);
-        if ((listeners == null) || listeners.isEmpty()) {
+        if (listeners == null || listeners.isEmpty()) {
             throw new RestconfDocumentedException("Stream was not found.", ErrorType.PROTOCOL,
                     ErrorTag.UNKNOWN_ELEMENT);
         }
 
         for (final NotificationListenerAdapter listener : listeners) {
             this.broker.registerToListenNotification(listener);
-            listener.setQueryParams(start, stop, filter);
+            listener.setQueryParams(start,
+                    java.util.Optional.ofNullable(stop), java.util.Optional.ofNullable(filter), false);
         }
 
         final UriBuilder uriBuilder = uriInfo.getAbsolutePathBuilder();
@@ -1324,22 +1250,22 @@ public class RestconfImpl implements RestconfService {
     }
 
     /**
-     * Register data change listener by stream name
+     * Register data change listener by stream name.
      *
      * @param identifier
-     *            stream name
+     *            stream name
      * @param uriInfo
-     *            uri info
+     *            uri info
      * @param stop
-     *            start-time of getting notification
+     *            start-time of getting notification
      * @param start
-     *            stop-time of getting notification
+     *            stop-time of getting notification
      * @param filter
-     *            indicate which subset of all possible events are of interest
+     *            indicate which subset of all possible events are of interest
      * @return {@link URI} of location
      */
-    private URI dataSubs(final String identifier, final UriInfo uriInfo, final Date start, final Date stop,
-            final String filter) {
+    private URI dataSubs(final String identifier, final UriInfo uriInfo, final Instant start, final Instant stop,
+            final String filter, final boolean leafNodesOnly) {
         final String streamName = Notificator.createStreamNameFromUri(identifier);
         if (Strings.isNullOrEmpty(streamName)) {
             throw new RestconfDocumentedException("Stream name is empty.", ErrorType.PROTOCOL, ErrorTag.INVALID_VALUE);
@@ -1350,7 +1276,8 @@ public class RestconfImpl implements RestconfService {
             throw new RestconfDocumentedException("Stream was not found.", ErrorType.PROTOCOL,
                     ErrorTag.UNKNOWN_ELEMENT);
         }
-        listener.setQueryParams(start, stop, filter);
+        listener.setQueryParams(start, java.util.Optional.ofNullable(stop),
+                java.util.Optional.ofNullable(filter), leafNodesOnly);
 
         final Map<String, String> paramToValues = resolveValuesFromUri(identifier);
         final LogicalDatastoreType datastore =
@@ -1382,9 +1309,10 @@ public class RestconfImpl implements RestconfService {
         return uriToWebsocketServer;
     }
 
+    @SuppressWarnings("checkstyle:IllegalCatch")
     @Override
-    public PATCHStatusContext patchConfigurationData(final String identifier, final PATCHContext context,
-            final UriInfo uriInfo) {
+    public PatchStatusContext patchConfigurationData(final String identifier, final PatchContext context,
+                                                     final UriInfo uriInfo) {
         if (context == null) {
             throw new RestconfDocumentedException("Input is required.", ErrorType.PROTOCOL, ErrorTag.MALFORMED_MESSAGE);
         }
@@ -1397,8 +1325,9 @@ public class RestconfImpl implements RestconfService {
         }
     }
 
+    @SuppressWarnings("checkstyle:IllegalCatch")
     @Override
-    public PATCHStatusContext patchConfigurationData(final PATCHContext context, @Context final UriInfo uriInfo) {
+    public PatchStatusContext patchConfigurationData(final PatchContext context, @Context final UriInfo uriInfo) {
         if (context == null) {
             throw new RestconfDocumentedException("Input is required.", ErrorType.PROTOCOL, ErrorTag.MALFORMED_MESSAGE);
         }
@@ -1412,7 +1341,7 @@ public class RestconfImpl implements RestconfService {
     }
 
     /**
-     * Load parameter for subscribing to stream from input composite node
+     * Load parameter for subscribing to stream from input composite node.
      *
      * @param value
      *            contains value
@@ -1441,7 +1370,7 @@ public class RestconfImpl implements RestconfService {
 
     /**
      * Checks whether {@code value} is one of the string representation of
-     * enumeration {@code classDescriptor}
+     * enumeration {@code classDescriptor}.
      *
      * @return enum object if string value of {@code classDescriptor}
      *         enumeration is equal to {@code value}. Other cases null.
@@ -1501,35 +1430,35 @@ public class RestconfImpl implements RestconfService {
                 Builders.mapEntryBuilder(listModuleSchemaNode);
 
         List<DataSchemaNode> instanceDataChildrenByName =
-                ControllerContext.findInstanceDataChildrenByName((listModuleSchemaNode), "name");
+                ControllerContext.findInstanceDataChildrenByName(listModuleSchemaNode, "name");
         final DataSchemaNode nameSchemaNode = Iterables.getFirst(instanceDataChildrenByName, null);
         Preconditions.checkState(nameSchemaNode instanceof LeafSchemaNode);
         moduleNodeValues
                 .withChild(Builders.leafBuilder((LeafSchemaNode) nameSchemaNode).withValue(module.getName()).build());
 
         instanceDataChildrenByName =
-                ControllerContext.findInstanceDataChildrenByName((listModuleSchemaNode), "revision");
+                ControllerContext.findInstanceDataChildrenByName(listModuleSchemaNode, "revision");
         final DataSchemaNode revisionSchemaNode = Iterables.getFirst(instanceDataChildrenByName, null);
         Preconditions.checkState(revisionSchemaNode instanceof LeafSchemaNode);
-        final String revision = REVISION_FORMAT.format(module.getRevision());
+        final String revision = module.getQNameModule().getFormattedRevision();
         moduleNodeValues
                 .withChild(Builders.leafBuilder((LeafSchemaNode) revisionSchemaNode).withValue(revision).build());
 
         instanceDataChildrenByName =
-                ControllerContext.findInstanceDataChildrenByName((listModuleSchemaNode), "namespace");
+                ControllerContext.findInstanceDataChildrenByName(listModuleSchemaNode, "namespace");
         final DataSchemaNode namespaceSchemaNode = Iterables.getFirst(instanceDataChildrenByName, null);
         Preconditions.checkState(namespaceSchemaNode instanceof LeafSchemaNode);
         moduleNodeValues.withChild(Builders.leafBuilder((LeafSchemaNode) namespaceSchemaNode)
                 .withValue(module.getNamespace().toString()).build());
 
         instanceDataChildrenByName =
-                ControllerContext.findInstanceDataChildrenByName((listModuleSchemaNode), "feature");
+                ControllerContext.findInstanceDataChildrenByName(listModuleSchemaNode, "feature");
         final DataSchemaNode featureSchemaNode = Iterables.getFirst(instanceDataChildrenByName, null);
         Preconditions.checkState(featureSchemaNode instanceof LeafListSchemaNode);
         final ListNodeBuilder<Object, LeafSetEntryNode<Object>> featuresBuilder =
                 Builders.leafSetBuilder((LeafListSchemaNode) featureSchemaNode);
         for (final FeatureDefinition feature : module.getFeatures()) {
-            featuresBuilder.withChild(Builders.leafSetEntryBuilder(((LeafListSchemaNode) featureSchemaNode))
+            featuresBuilder.withChild(Builders.leafSetEntryBuilder((LeafListSchemaNode) featureSchemaNode)
                     .withValue(feature.getQName().getLocalName()).build());
         }
         moduleNodeValues.withChild(featuresBuilder.build());
@@ -1545,33 +1474,33 @@ public class RestconfImpl implements RestconfService {
                 Builders.mapEntryBuilder(listStreamSchemaNode);
 
         List<DataSchemaNode> instanceDataChildrenByName =
-                ControllerContext.findInstanceDataChildrenByName((listStreamSchemaNode), "name");
+                ControllerContext.findInstanceDataChildrenByName(listStreamSchemaNode, "name");
         final DataSchemaNode nameSchemaNode = Iterables.getFirst(instanceDataChildrenByName, null);
         Preconditions.checkState(nameSchemaNode instanceof LeafSchemaNode);
         streamNodeValues.withChild(Builders.leafBuilder((LeafSchemaNode) nameSchemaNode).withValue(streamName).build());
 
         instanceDataChildrenByName =
-                ControllerContext.findInstanceDataChildrenByName((listStreamSchemaNode), "description");
+                ControllerContext.findInstanceDataChildrenByName(listStreamSchemaNode, "description");
         final DataSchemaNode descriptionSchemaNode = Iterables.getFirst(instanceDataChildrenByName, null);
         Preconditions.checkState(descriptionSchemaNode instanceof LeafSchemaNode);
         streamNodeValues.withChild(
                 Builders.leafBuilder((LeafSchemaNode) nameSchemaNode).withValue("DESCRIPTION_PLACEHOLDER").build());
 
         instanceDataChildrenByName =
-                ControllerContext.findInstanceDataChildrenByName((listStreamSchemaNode), "replay-support");
+                ControllerContext.findInstanceDataChildrenByName(listStreamSchemaNode, "replay-support");
         final DataSchemaNode replaySupportSchemaNode = Iterables.getFirst(instanceDataChildrenByName, null);
         Preconditions.checkState(replaySupportSchemaNode instanceof LeafSchemaNode);
         streamNodeValues.withChild(Builders.leafBuilder((LeafSchemaNode) replaySupportSchemaNode)
                 .withValue(Boolean.valueOf(true)).build());
 
         instanceDataChildrenByName =
-                ControllerContext.findInstanceDataChildrenByName((listStreamSchemaNode), "replay-log-creation-time");
+                ControllerContext.findInstanceDataChildrenByName(listStreamSchemaNode, "replay-log-creation-time");
         final DataSchemaNode replayLogCreationTimeSchemaNode = Iterables.getFirst(instanceDataChildrenByName, null);
         Preconditions.checkState(replayLogCreationTimeSchemaNode instanceof LeafSchemaNode);
         streamNodeValues.withChild(
                 Builders.leafBuilder((LeafSchemaNode) replayLogCreationTimeSchemaNode).withValue("").build());
 
-        instanceDataChildrenByName = ControllerContext.findInstanceDataChildrenByName((listStreamSchemaNode), "events");
+        instanceDataChildrenByName = ControllerContext.findInstanceDataChildrenByName(listStreamSchemaNode, "events");
         final DataSchemaNode eventsSchemaNode = Iterables.getFirst(instanceDataChildrenByName, null);
         Preconditions.checkState(eventsSchemaNode instanceof LeafSchemaNode);
         streamNodeValues.withChild(Builders.leafBuilder((LeafSchemaNode) eventsSchemaNode).withValue("").build());
@@ -1580,14 +1509,14 @@ public class RestconfImpl implements RestconfService {
     }
 
     /**
-     * Prepare stream for notification
+     * Prepare stream for notification.
      *
      * @param payload
-     *            contains list of qnames of notifications
+     *            contains list of qnames of notifications
      * @return - checked future object
      */
-    private CheckedFuture<DOMRpcResult, DOMRpcException>
-            invokeSalRemoteRpcNotifiStrRPC(final NormalizedNodeContext payload) {
+    private static CheckedFuture<DOMRpcResult, DOMRpcException> invokeSalRemoteRpcNotifiStrRPC(
+            final NormalizedNodeContext payload) {
         final ContainerNode data = (ContainerNode) payload.getData();
         LeafSetNode leafSet = null;
         String outputType = "XML";
@@ -1595,7 +1524,7 @@ public class RestconfImpl implements RestconfService {
             if (dataChild instanceof LeafSetNode) {
                 leafSet = (LeafSetNode) dataChild;
             } else if (dataChild instanceof AugmentationNode) {
-                outputType = (String) (((AugmentationNode) dataChild).getValue()).iterator().next().getValue();
+                outputType = (String) ((AugmentationNode) dataChild).getValue().iterator().next().getValue();
             }
         }
 
@@ -1643,25 +1572,4 @@ public class RestconfImpl implements RestconfService {
 
         return Futures.immediateCheckedFuture(defaultDOMRpcResult);
     }
-
-    private class TryOfPutData {
-        int tries = 2;
-        boolean done = false;
-
-        void countDown() {
-            this.tries--;
-        }
-
-        void done() {
-            this.done = true;
-        }
-
-        boolean isDone() {
-            return this.done;
-        }
-
-        int countGet() {
-            return this.tries;
-        }
-    }
 }