Heal Vertex Data

Enable healing of vertex information when reading it.
Issue-ID: SDC-2213

Change-Id: I907beeb25bd231d9e05d3a5b8e070d6bdf9cb781
Signed-off-by: shrek2000 <orenkle@amdocs.com>

20 files changed, 769 insertions, 22 deletions

diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/config/DAOSpringConfig.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/config/DAOSpringConfig.java
index 99979bac0c..99acb3b62b 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/config/DAOSpringConfig.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/config/DAOSpringConfig.java
@@ -23,6 +23,7 @@ package org.openecomp.sdc.be.dao.config;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Import;
+import org.springframework.context.annotation.PropertySource;
 
 @Configuration
 @Import({TitanSpringConfig.class})
@@ -33,10 +34,7 @@ import org.springframework.context.annotation.Import;
         "org.openecomp.sdc.be.dao.impl",
         "org.openecomp.sdc.be.resources.impl"
         })
+@PropertySource("classpath:dao.properties")
 public class DAOSpringConfig {
 
-
-
-
-
 }
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/config/TitanSpringConfig.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/config/TitanSpringConfig.java
index 6360af8e04..34a860ddd2 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/config/TitanSpringConfig.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/config/TitanSpringConfig.java
@@ -2,7 +2,8 @@ package org.openecomp.sdc.be.dao.config;
 
 import org.openecomp.sdc.be.dao.DAOTitanStrategy;
 import org.openecomp.sdc.be.dao.TitanClientStrategy;
-import org.openecomp.sdc.be.dao.titan.TitanGenericDao;
+import org.openecomp.sdc.be.dao.impl.HealingPipelineDao;
+import org.openecomp.sdc.be.dao.titan.HealingTitanGenericDao;
 import org.openecomp.sdc.be.dao.titan.TitanGraphClient;
 import org.openecomp.sdc.be.dao.titan.transactions.SimpleTitanTransactionManager;
 import org.springframework.beans.factory.annotation.Qualifier;
@@ -22,8 +23,8 @@ public class TitanSpringConfig {
 
     @Bean(name = "titan-generic-dao")
     @Primary
-    public TitanGenericDao titanGenericDao(@Qualifier("titan-client") TitanGraphClient titanGraphClient) {
-        return new TitanGenericDao(titanGraphClient);
+    public HealingTitanGenericDao titanGenericDao(@Qualifier("titan-client") TitanGraphClient titanGraphClient) {
+        return new HealingTitanGenericDao(titanGraphClient);
     }
 
     @Bean(name = "titan-client", initMethod = "createGraph")
@@ -41,4 +42,12 @@ public class TitanSpringConfig {
     public PlatformTransactionManager txManager() {
         return new SimpleTitanTransactionManager(titanGraphClient(titanClientStrategy()));
     }
+
+    @Bean(name = "healingPipelineDao")
+    public HealingPipelineDao  healingPipeline(){
+        HealingPipelineDao healingPipelineDao = new HealingPipelineDao();
+        healingPipelineDao.setHealVersion(1);
+        healingPipelineDao.initHealVersion();
+        return healingPipelineDao;
+    }
 }
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/graph/datatype/GraphNode.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/graph/datatype/GraphNode.java
index 35ab30c79a..3375719535 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/graph/datatype/GraphNode.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/graph/datatype/GraphNode.java
@@ -21,13 +21,14 @@
 package org.openecomp.sdc.be.dao.graph.datatype;
 
 import com.google.gson.Gson;
+import java.util.List;
+import java.util.Map;
 import org.apache.commons.lang3.tuple.ImmutablePair;
+import org.openecomp.sdc.be.dao.jsongraph.heal.HealConstants;
 import org.openecomp.sdc.be.dao.neo4j.GraphPropertiesDictionary;
+import org.openecomp.sdc.be.datatypes.enums.GraphPropertyEnum;
 import org.openecomp.sdc.be.datatypes.enums.NodeTypeEnum;
 
-import java.util.List;
-import java.util.Map;
-
 public abstract class GraphNode extends GraphElement {
 
 	private static final Gson gson = new Gson();
@@ -61,15 +62,39 @@ public abstract class GraphNode extends GraphElement {
 		}
 	}
 
+
+
+	public abstract String getUniqueId();
+
+
 	public String getUniqueIdKey() {
 		return GraphPropertiesDictionary.UNIQUE_ID.getProperty();
 	}
 
-	public abstract String getUniqueId();
+	public String getHealingVersionKey() {
+		return GraphPropertyEnum.HEALING_VERSION.getProperty();
+	}
+
+	/**
+	 * Must be overridden in implelemting classes
+	 * @return current heal version. Default heal version if function not implemented.
+	 */
+	public Integer getHealingVersion(){
+		return HealConstants.DEFAULT_HEAL_VERSION;
+	}
+
+	/**
+	 * Must be overriden in implementing classes
+	 * @param version healing version number
+	 */
+	public void setHealingVersion(Integer version){
+
+	}
 
 	@Override
 	public String toString() {
 		return "GraphNode [label=" + label + ", parent: " + super.toString() + "]";
 	}
 
+
 }
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/impl/HealingPipelineDao.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/impl/HealingPipelineDao.java
new file mode 100644
index 0000000000..5b219b2371
--- /dev/null
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/impl/HealingPipelineDao.java
@@ -0,0 +1,172 @@
+/*
+ * Copyright © 2016-2018 European Support Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.openecomp.sdc.be.dao.impl;
+
+import static java.util.stream.Collectors.joining;
+
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableListMultimap;
+import com.thinkaurelius.titan.core.TitanVertex;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.Set;
+import java.util.stream.Collectors;
+import javax.annotation.PostConstruct;
+import org.openecomp.sdc.be.dao.graph.datatype.GraphElement;
+import org.openecomp.sdc.be.dao.graph.datatype.GraphNode;
+import org.openecomp.sdc.be.dao.impl.heal.HealGraphDao;
+import org.openecomp.sdc.be.dao.impl.heal.HealNodeGraphDao;
+import org.openecomp.sdc.be.dao.impl.heal.HealTitanGraphDao;
+import org.openecomp.sdc.be.dao.impl.heal.HealVertexGraphDao;
+import org.openecomp.sdc.be.dao.jsongraph.GraphVertex;
+import org.openecomp.sdc.be.dao.jsongraph.heal.Heal;
+import org.openecomp.sdc.be.dao.jsongraph.heal.HealVersion;
+import org.openecomp.sdc.be.dao.jsongraph.heal.HealVersionBuilder;
+import org.openecomp.sdc.be.datatypes.enums.GraphPropertyEnum;
+import org.openecomp.sdc.common.log.wrappers.Logger;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+@Component("healingPipelineDao")
+public class HealingPipelineDao {
+
+    private static Logger logger = Logger.getLogger(HealingPipelineDao.class.getName());
+
+    private HealVersion<Integer> currentHealVersion;
+
+    @Value("${current.heal.version}")
+    private Integer healVersion;
+
+    private ImmutableListMultimap<String, Heal> healingPipeline;
+
+    private HealGraphDao healNodeGraphDao;
+    private HealGraphDao healVertexGraphDao;
+    private HealGraphDao healTitanVertexGraphDao;
+
+    public HealingPipelineDao() {
+        healingPipeline = ImmutableListMultimap.of();
+        checkValidation(healingPipeline);
+    }
+
+    @PostConstruct
+    public void initHealVersion() {
+        currentHealVersion = HealVersionBuilder.build(healVersion);
+    }
+
+    @PostConstruct
+    public void initGraphHealers() {
+        healNodeGraphDao = new HealNodeGraphDao(this);
+        healVertexGraphDao = new HealVertexGraphDao(this);
+        healTitanVertexGraphDao = new HealTitanGraphDao(this);
+    }
+
+
+    private HealGraphDao supplyHealer(Object graphNode) {
+        if (graphNode instanceof GraphVertex) {
+            return healVertexGraphDao;
+        }
+        if (graphNode instanceof GraphElement) {
+            return healNodeGraphDao;
+        }
+        if (graphNode instanceof TitanVertex) {
+            return healTitanVertexGraphDao;
+        }
+
+        return null;
+    }
+
+
+    public ImmutableListMultimap<String, Heal> getHealingPipeline() {
+        return healingPipeline;
+    }
+
+    public boolean shouldHeal(HealVersion<Integer> healerVersion, HealVersion<Integer> vertexVersion) {
+        Objects.requireNonNull(healerVersion);
+        Objects.requireNonNull(vertexVersion);
+        if (healerVersion.compareTo(currentHealVersion) >= 0) {
+            return false;
+        }
+        return healerVersion.compareTo(vertexVersion) >= 0;
+    }
+
+    public void setHealVersion(Integer healVersion) {
+        this.healVersion = healVersion;
+    }
+
+
+    public ImmutableList<Heal> getHealersForVertex(String edgeLabelEnum, HealVersion<Integer> vertexVersion) {
+        final ImmutableList<Heal> vertexHeals = getHealingPipeline().get(edgeLabelEnum);
+        List<Heal> list = new ArrayList<>();
+        for (Heal heal : vertexHeals) {
+            if (shouldHeal(heal.fromVersion(), vertexVersion)) {
+                list.add(heal);
+            }
+        }
+        return ImmutableList.copyOf(list);
+    }
+
+
+    public void setHealingPipeline(ImmutableListMultimap<String, Heal> healingPipeline) {
+        checkValidation(healingPipeline);
+        this.healingPipeline = healingPipeline;
+    }
+
+
+    public void setHealingVersion(final GraphVertex graphVertex) {
+        graphVertex.addMetadataProperty(GraphPropertyEnum.HEALING_VERSION, currentHealVersion.getVersion());
+    }
+
+    public void setHealingVersion(TitanVertex graphVertex) {
+        graphVertex.property(GraphPropertyEnum.HEALING_VERSION.getProperty(), currentHealVersion.getVersion());
+    }
+
+    public void setHealingVersion(GraphNode graphNode) {
+        graphNode.setHealingVersion(currentHealVersion.getVersion());
+    }
+
+    public HealVersion<Integer> getCurrentHealVersion() {
+        return currentHealVersion;
+    }
+
+    public Optional performGraphReadHealing(Object graphNode, Object edgeLabel) {
+        HealGraphDao healGraphDao = supplyHealer(graphNode);
+        if (healGraphDao == null) {
+            logger.error("Unexpected graph node : {}", graphNode.getClass().getCanonicalName());
+            return Optional.empty();
+        }
+        return Optional.of(healGraphDao.performGraphReadHealing(graphNode, edgeLabel));
+    }
+
+    /**
+     * prevent duplicated healing version for same edge label.
+     */
+    private void checkValidation(ImmutableListMultimap<String, Heal> listMultimap)  {
+        listMultimap.keySet().forEach(key -> this.validNoDuplicates(key, listMultimap.get(key)));
+    }
+
+    private void validNoDuplicates(String key, List<Heal> heals) {
+        Set<Integer> duplicatedVersionSet = new HashSet<>();
+        Set<Integer> duplicatedNumbersSet = heals.stream().map(heal -> ((HealVersion<Integer>) heal.fromVersion()).getVersion()).filter(n -> !duplicatedVersionSet.add(n)).collect(Collectors.toSet());
+        if (!duplicatedNumbersSet.isEmpty()) {
+            throw new IllegalStateException(String.format("Edge label %s , contains multiple healing with same version %s", key, duplicatedNumbersSet.stream().map(Object::toString).collect(joining(" , ", "[ ", " ]"))));
+        }
+    }
+
+}
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/impl/heal/HealGraphDao.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/impl/heal/HealGraphDao.java
new file mode 100644
index 0000000000..b8e5a3c041
--- /dev/null
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/impl/heal/HealGraphDao.java
@@ -0,0 +1,6 @@
+package org.openecomp.sdc.be.dao.impl.heal;
+
+@FunctionalInterface
+public interface HealGraphDao<G,L>  {
+    G performGraphReadHealing(G childVertex, L edgeLabelEnum);
+}
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/impl/heal/HealNodeGraphDao.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/impl/heal/HealNodeGraphDao.java
new file mode 100644
index 0000000000..2fc5c8fc5d
--- /dev/null
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/impl/heal/HealNodeGraphDao.java
@@ -0,0 +1,35 @@
+package org.openecomp.sdc.be.dao.impl.heal;
+
+import org.openecomp.sdc.be.dao.graph.datatype.GraphEdge;
+import org.openecomp.sdc.be.dao.graph.datatype.GraphNode;
+import org.openecomp.sdc.be.dao.impl.HealingPipelineDao;
+import org.openecomp.sdc.be.dao.jsongraph.heal.Heal;
+import org.openecomp.sdc.be.dao.jsongraph.heal.HealVersion;
+import org.openecomp.sdc.be.dao.jsongraph.heal.HealVersionBuilder;
+
+public class HealNodeGraphDao implements HealGraphDao<GraphNode, GraphEdge> {
+
+    private HealingPipelineDao healingPipelineDao;
+
+
+    public HealNodeGraphDao(HealingPipelineDao healingPipelineDao) {
+        this.healingPipelineDao = healingPipelineDao;
+    }
+
+    @Override
+    public GraphNode performGraphReadHealing(GraphNode childVertex, GraphEdge graphEdge) {
+        Integer healingVersionInt =  childVertex.getHealingVersion();
+        HealVersion<Integer> healingVersion = HealVersionBuilder.build(healingVersionInt);
+        healingPipelineDao.getHealersForVertex(graphEdge.getEdgeType().getProperty(), healingVersion).forEach(heal -> healTitanVertex(childVertex, heal));
+        childVertex.setHealingVersion(healingPipelineDao.getCurrentHealVersion().getVersion());
+        return childVertex;
+    }
+
+    private GraphNode healTitanVertex(GraphNode childVertex, Heal<GraphNode> heal) {
+        heal.healData(childVertex);
+        final HealVersion<Integer> healVersion = heal.fromVersion();
+        HealVersion<Integer> newerVersion = HealVersionBuilder.build(healVersion.getVersion() + 1);
+        childVertex.setHealingVersion(newerVersion.getVersion());
+        return childVertex;
+    }
+}
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/impl/heal/HealTitanGraphDao.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/impl/heal/HealTitanGraphDao.java
new file mode 100644
index 0000000000..1e33c61b9f
--- /dev/null
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/impl/heal/HealTitanGraphDao.java
@@ -0,0 +1,38 @@
+package org.openecomp.sdc.be.dao.impl.heal;
+
+import com.thinkaurelius.titan.core.TitanVertex;
+import org.openecomp.sdc.be.dao.impl.HealingPipelineDao;
+import org.openecomp.sdc.be.dao.jsongraph.heal.Heal;
+import org.openecomp.sdc.be.dao.jsongraph.heal.HealConstants;
+import org.openecomp.sdc.be.dao.jsongraph.heal.HealVersion;
+import org.openecomp.sdc.be.dao.jsongraph.heal.HealVersionBuilder;
+import org.openecomp.sdc.be.dao.neo4j.GraphEdgeLabels;
+import org.openecomp.sdc.be.datatypes.enums.GraphPropertyEnum;
+
+public class HealTitanGraphDao implements HealGraphDao<TitanVertex, GraphEdgeLabels> {
+
+    private HealingPipelineDao healingPipelineDao;
+
+    public HealTitanGraphDao(HealingPipelineDao healingPipelineDao) {
+        this.healingPipelineDao = healingPipelineDao;
+    }
+
+    @Override
+    public TitanVertex performGraphReadHealing(TitanVertex childVertex, GraphEdgeLabels graphEdgeLabels) {
+        final Integer healingVersionInt = (Integer) childVertex.property(GraphPropertyEnum.HEALING_VERSION.getProperty()).orElse(HealConstants.DEFAULT_HEAL_VERSION);
+        HealVersion<Integer> healingVersion = HealVersionBuilder.build(healingVersionInt);
+        healingPipelineDao.getHealersForVertex(graphEdgeLabels.name(), healingVersion).forEach(heal -> healGraphVertex(childVertex, heal));
+        childVertex.property(GraphPropertyEnum.HEALING_VERSION.getProperty(), healingPipelineDao.getCurrentHealVersion().getVersion());
+        return childVertex;
+    }
+
+
+    private TitanVertex healGraphVertex(TitanVertex childVertex, Heal<TitanVertex> heal) {
+        heal.healData(childVertex);
+        final HealVersion<Integer> healVersion = heal.fromVersion();
+        HealVersion newerVersion = HealVersionBuilder.build(healVersion.getVersion() + 1);
+        childVertex.property(GraphPropertyEnum.HEALING_VERSION.getProperty(), newerVersion);
+        heal.healData(childVertex);
+        return childVertex;
+    }
+}
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/impl/heal/HealVertexGraphDao.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/impl/heal/HealVertexGraphDao.java
new file mode 100644
index 0000000000..b8eb670176
--- /dev/null
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/impl/heal/HealVertexGraphDao.java
@@ -0,0 +1,39 @@
+package org.openecomp.sdc.be.dao.impl.heal;
+
+import org.openecomp.sdc.be.dao.impl.HealingPipelineDao;
+import org.openecomp.sdc.be.dao.jsongraph.GraphVertex;
+import org.openecomp.sdc.be.dao.jsongraph.heal.Heal;
+import org.openecomp.sdc.be.dao.jsongraph.heal.HealConstants;
+import org.openecomp.sdc.be.dao.jsongraph.heal.HealVersion;
+import org.openecomp.sdc.be.dao.jsongraph.heal.HealVersionBuilder;
+import org.openecomp.sdc.be.dao.jsongraph.types.EdgeLabelEnum;
+import org.openecomp.sdc.be.datatypes.enums.GraphPropertyEnum;
+
+public class HealVertexGraphDao implements HealGraphDao<GraphVertex, EdgeLabelEnum> {
+
+    private HealingPipelineDao healingPipelineDao;
+
+    public HealVertexGraphDao(HealingPipelineDao healingPipelineDao) {
+        this.healingPipelineDao = healingPipelineDao;
+    }
+
+    @Override
+    public GraphVertex performGraphReadHealing( GraphVertex childVertex, EdgeLabelEnum edgeLabelEnum) {
+        final Integer healingVersionInt = (Integer) childVertex.getMetadataProperties()
+                .getOrDefault(GraphPropertyEnum.HEALING_VERSION, HealConstants.DEFAULT_HEAL_VERSION);
+        HealVersion<Integer> healingVersion = HealVersionBuilder.build(healingVersionInt);
+        healingPipelineDao.getHealersForVertex(edgeLabelEnum.name(), healingVersion).forEach(heal -> healGraphVertex(childVertex, heal));
+        childVertex.addMetadataProperty(GraphPropertyEnum.HEALING_VERSION, healingPipelineDao.getCurrentHealVersion().getVersion());
+        return childVertex;
+    }
+
+
+    private GraphVertex healGraphVertex(GraphVertex childVertex, Heal<GraphVertex> heal) {
+        heal.healData(childVertex);
+        final HealVersion<Integer> healVersion = heal.fromVersion();
+        HealVersion newerVersion = HealVersionBuilder.build(healVersion.getVersion() + 1);
+        childVertex.addMetadataProperty(GraphPropertyEnum.HEALING_VERSION, newerVersion);
+        heal.healData(childVertex);
+        return childVertex;
+    }
+}
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/HealingTitanDao.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/HealingTitanDao.java
new file mode 100644
index 0000000000..fb6b9d8fa3
--- /dev/null
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/HealingTitanDao.java
@@ -0,0 +1,64 @@
+/*
+ * Copyright © 2016-2018 European Support Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.openecomp.sdc.be.dao.jsongraph;
+
+import fj.data.Either;
+import java.util.List;
+import java.util.Optional;
+import java.util.stream.Collectors;
+import org.openecomp.sdc.be.dao.impl.HealingPipelineDao;
+import org.openecomp.sdc.be.dao.jsongraph.types.EdgeLabelEnum;
+import org.openecomp.sdc.be.dao.jsongraph.types.JsonParseFlagEnum;
+import org.openecomp.sdc.be.dao.titan.TitanGraphClient;
+import org.openecomp.sdc.be.dao.titan.TitanOperationStatus;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component("titan-dao")
+public class HealingTitanDao extends TitanDao {
+
+
+    @Autowired
+    private HealingPipelineDao healingPipelineDao;
+
+
+    public HealingTitanDao(TitanGraphClient titanClient) {
+        super(titanClient);
+    }
+
+    @Override
+    public Either<List<GraphVertex>, TitanOperationStatus> getChildrenVertecies(GraphVertex parentVertex,
+            EdgeLabelEnum edgeLabel, JsonParseFlagEnum parseFlag) {
+        Either<List<GraphVertex>, TitanOperationStatus> childrenVertecies =
+                super.getChildrenVertecies(parentVertex, edgeLabel, parseFlag);
+        return Either.iif(childrenVertecies.isRight(), () -> childrenVertecies.right().value(),
+                () -> childrenVertecies.left().value().stream()
+                              .map(graphVertex -> transformVertex(graphVertex, edgeLabel))
+                              .collect(Collectors.toList()));
+    }
+
+    private GraphVertex transformVertex(GraphVertex graphVertex, EdgeLabelEnum edgeLabelEnum) {
+        Optional<GraphVertex> optional = healingPipelineDao.performGraphReadHealing(graphVertex, edgeLabelEnum);
+        return optional.orElse(graphVertex);
+    }
+
+
+    public void setHealingPipelineDao(HealingPipelineDao healingPipelineDao) {
+        this.healingPipelineDao = healingPipelineDao;
+    }
+
+}
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/TitanDao.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/TitanDao.java
index e01cddceb0..a31900acce 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/TitanDao.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/TitanDao.java
@@ -48,7 +48,7 @@ import java.util.Map.Entry;
 
 import static org.apache.commons.collections.CollectionUtils.isEmpty;
 
-@Component("titan-dao")
+
 public class TitanDao {
     TitanGraphClient titanClient;
 
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/heal/AbstractGraphVertexHeal.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/heal/AbstractGraphVertexHeal.java
new file mode 100644
index 0000000000..9be730ca95
--- /dev/null
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/heal/AbstractGraphVertexHeal.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright © 2016-2018 European Support Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.openecomp.sdc.be.dao.jsongraph.heal;
+
+import org.openecomp.sdc.be.dao.jsongraph.GraphVertex;
+import org.openecomp.sdc.common.log.wrappers.Logger;
+
+public abstract class AbstractGraphVertexHeal implements Heal<GraphVertex> {
+
+    protected Logger logger = Logger.getLogger(AbstractGraphVertexHeal.class);
+}
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/heal/AbstractTitanVertexHeal.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/heal/AbstractTitanVertexHeal.java
new file mode 100644
index 0000000000..e01ddab989
--- /dev/null
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/heal/AbstractTitanVertexHeal.java
@@ -0,0 +1,22 @@
+/*
+ * Copyright © 2016-2018 European Support Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.openecomp.sdc.be.dao.jsongraph.heal;
+
+import org.openecomp.sdc.be.dao.graph.datatype.GraphNode;
+
+public abstract class AbstractTitanVertexHeal implements Heal<GraphNode> {
+
+}
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/heal/Heal.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/heal/Heal.java
new file mode 100644
index 0000000000..6c60772e8a
--- /dev/null
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/heal/Heal.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright © 2016-2018 European Support Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.openecomp.sdc.be.dao.jsongraph.heal;
+
+public interface Heal<V> {
+
+
+    HealVersion fromVersion();
+
+    void healData(V parentV);
+
+
+
+}
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/heal/HealConstants.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/heal/HealConstants.java
new file mode 100644
index 0000000000..ce1b24ab36
--- /dev/null
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/heal/HealConstants.java
@@ -0,0 +1,10 @@
+package org.openecomp.sdc.be.dao.jsongraph.heal;
+
+public class HealConstants {
+
+    public static final Integer DEFAULT_HEAL_VERSION = 0;
+    private HealConstants() {
+    }
+
+
+}
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/heal/HealVersion.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/heal/HealVersion.java
new file mode 100644
index 0000000000..55d3f43c79
--- /dev/null
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/heal/HealVersion.java
@@ -0,0 +1,22 @@
+/*
+ * Copyright © 2016-2018 European Support Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.openecomp.sdc.be.dao.jsongraph.heal;
+
+public interface HealVersion<T> extends Comparable<HealVersion> {
+
+    T getVersion();
+}
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/heal/HealVersionBuilder.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/heal/HealVersionBuilder.java
new file mode 100644
index 0000000000..3a7b0645c1
--- /dev/null
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/heal/HealVersionBuilder.java
@@ -0,0 +1,28 @@
+/*
+ * Copyright © 2016-2018 European Support Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.openecomp.sdc.be.dao.jsongraph.heal;
+
+public class HealVersionBuilder {
+
+    private HealVersionBuilder() {
+    }
+
+    public static HealVersion<Integer> build(Integer version) {
+        return new HealVersionImpl(version);
+    }
+
+}
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/heal/HealVersionImpl.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/heal/HealVersionImpl.java
new file mode 100644
index 0000000000..4ce28debc1
--- /dev/null
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/jsongraph/heal/HealVersionImpl.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright © 2016-2018 European Support Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.openecomp.sdc.be.dao.jsongraph.heal;
+
+import com.google.common.base.MoreObjects;
+import java.util.Objects;
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+
+class HealVersionImpl<T extends Comparable> implements HealVersion<T> {
+
+    private final T version;
+
+    public HealVersionImpl(T version) {
+        Objects.requireNonNull(version, "Version cannot be null");
+        this.version = version;
+    }
+
+    public T getVersion() {
+        return version;
+    }
+
+
+    @Override
+    public int compareTo(HealVersion o) {
+        return this.version.compareTo( o.getVersion());
+    }
+
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+
+        if (!(o instanceof HealVersionImpl)) {
+            return false;
+        }
+
+        HealVersionImpl that = (HealVersionImpl) o;
+
+        return new EqualsBuilder().append(getVersion(), that.getVersion()).isEquals();
+    }
+
+    @Override
+    public int hashCode() {
+        return new HashCodeBuilder(17, 37).append(getVersion()).toHashCode();
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(this).add("version", version).toString();
+    }
+}
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/titan/HealingTitanGenericDao.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/titan/HealingTitanGenericDao.java
new file mode 100644
index 0000000000..37546a5c2a
--- /dev/null
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/titan/HealingTitanGenericDao.java
@@ -0,0 +1,128 @@
+/*
+ * Copyright © 2016-2018 European Support Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.openecomp.sdc.be.dao.titan;
+
+import com.thinkaurelius.titan.core.TitanVertex;
+import fj.data.Either;
+import java.util.List;
+import org.apache.commons.lang3.tuple.ImmutablePair;
+import org.apache.tinkerpop.gremlin.structure.Edge;
+import org.apache.tinkerpop.gremlin.structure.Vertex;
+import org.apache.tinkerpop.gremlin.structure.VertexProperty;
+import org.openecomp.sdc.be.dao.graph.datatype.GraphEdge;
+import org.openecomp.sdc.be.dao.graph.datatype.GraphNode;
+import org.openecomp.sdc.be.dao.impl.HealingPipelineDao;
+import org.openecomp.sdc.be.dao.jsongraph.heal.Heal;
+import org.openecomp.sdc.be.dao.jsongraph.heal.HealConstants;
+import org.openecomp.sdc.be.dao.jsongraph.heal.HealVersion;
+import org.openecomp.sdc.be.dao.jsongraph.heal.HealVersionBuilder;
+import org.openecomp.sdc.be.dao.neo4j.GraphEdgeLabels;
+import org.openecomp.sdc.be.datatypes.enums.GraphPropertyEnum;
+import org.openecomp.sdc.be.datatypes.enums.NodeTypeEnum;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component("titan-generic-dao")
+public class HealingTitanGenericDao extends TitanGenericDao {
+
+    @Autowired
+    private HealingPipelineDao healingPipelineDao;
+
+    public HealingTitanGenericDao(TitanGraphClient titanClient) {
+        super(titanClient);
+    }
+
+    @Override
+    public ImmutablePair<TitanVertex, Edge> getChildVertex(TitanVertex childVertex, GraphEdgeLabels edgeType) {
+        ImmutablePair<TitanVertex, Edge> childVertexEdgeImmutablePair = super.getChildVertex(childVertex, edgeType);
+        final TitanVertex graphVertex = childVertexEdgeImmutablePair.left;
+        healingPipelineDao.performGraphReadHealing(graphVertex, edgeType);
+        healingPipelineDao.setHealingVersion(graphVertex);
+        return childVertexEdgeImmutablePair;
+    }
+
+    @Override
+    public <T extends GraphNode> Either<List<ImmutablePair<T, GraphEdge>>, TitanOperationStatus> getChildrenNodes(String key, String uniqueId, GraphEdgeLabels edgeType, NodeTypeEnum nodeTypeEnum, Class<T> clazz, boolean withEdges) {
+        Either<List<ImmutablePair<T, GraphEdge>>, TitanOperationStatus> either = super.getChildrenNodes(key, uniqueId, edgeType, nodeTypeEnum, clazz, withEdges);
+        if (either.isRight()) {
+            return either;
+        }
+        List<ImmutablePair<T, GraphEdge>> list = either.left().value();
+        list.forEach(this::transformPair);
+        return either;
+    }
+
+    @Override
+    public <T extends GraphNode> Either<ImmutablePair<T, GraphEdge>, TitanOperationStatus> getChild(String key, String uniqueId, GraphEdgeLabels edgeType, NodeTypeEnum nodeTypeEnum, Class<T> clazz) {
+        Either<ImmutablePair<T, GraphEdge>, TitanOperationStatus> eitherChild = super.getChild(key, uniqueId, edgeType, nodeTypeEnum, clazz);
+        if (eitherChild.isRight()) {
+            return eitherChild;
+        }
+        ImmutablePair<T, GraphEdge> pair = eitherChild.left().value();
+        GraphNode graphNode = pair.left;
+        GraphEdge graphEdge = pair.right;
+        healingPipelineDao.performGraphReadHealing(graphNode, graphEdge);
+        healingPipelineDao.setHealingVersion(graphNode);
+        return eitherChild;
+    }
+
+    private <T extends GraphNode> void transformPair(ImmutablePair<T, GraphEdge> either) {
+        GraphEdge edgeType = either.right;
+        GraphNode childVertex = either.left;
+        Integer healingVersioInt = childVertex.getHealingVersion();
+        HealVersionBuilder.build(healingVersioInt);
+        healingPipelineDao.performGraphReadHealing(childVertex, edgeType);
+        healingPipelineDao.setHealingVersion(childVertex);
+    }
+
+    @Override
+    public Either<List<ImmutablePair<TitanVertex, Edge>>, TitanOperationStatus> getChildrenVertecies(String key, String uniqueId, GraphEdgeLabels edgeType) {
+        Either<List<ImmutablePair<TitanVertex, Edge>>, TitanOperationStatus> either = super.getChildrenVertecies(key, uniqueId, edgeType);
+        if (either.isRight()) {
+            return either;
+        }
+        List<ImmutablePair<TitanVertex, Edge>> list = either.left().value();
+        list.forEach(this::transformVertexPair);
+        return either;
+    }
+
+    private void transformVertexPair(ImmutablePair<TitanVertex, Edge> either) {
+        String edgeType = either.right.label();
+        TitanVertex childVertex = either.left;
+        VertexProperty<Integer> healingVersionProperty = childVertex.property(GraphPropertyEnum.HEALING_VERSION.getProperty());
+        Integer healingVersioInt = healingVersionProperty.orElse(HealConstants.DEFAULT_HEAL_VERSION);
+        HealVersionBuilder.build(healingVersioInt);
+        healingPipelineDao.performGraphReadHealing(childVertex, edgeType);
+        healingPipelineDao.setHealingVersion(childVertex);
+    }
+
+    @Override
+    public <T extends GraphNode> Either<T, TitanOperationStatus> updateNode(GraphNode node, Class<T> clazz) {
+        healingPipelineDao.setHealingVersion(node);
+        return super.updateNode(node, clazz);
+    }
+
+    @Override
+    public TitanOperationStatus updateVertex(GraphNode node, Vertex vertex) {
+        healingPipelineDao.setHealingVersion(node);
+        return super.updateVertex(node, vertex);
+    }
+
+
+    public void setHealingPipelineDao(HealingPipelineDao healingPipelineDao) {
+        this.healingPipelineDao = healingPipelineDao;
+    }
+}
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/titan/TitanGenericDao.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/titan/TitanGenericDao.java
index 3c502ffccb..2123910650 100644
--- a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/titan/TitanGenericDao.java
+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/titan/TitanGenericDao.java
@@ -20,28 +20,44 @@
 
 package org.openecomp.sdc.be.dao.titan;
 
-import com.thinkaurelius.titan.core.*;
+import com.thinkaurelius.titan.core.PropertyKey;
+import com.thinkaurelius.titan.core.TitanEdge;
+import com.thinkaurelius.titan.core.TitanGraph;
+import com.thinkaurelius.titan.core.TitanGraphQuery;
+import com.thinkaurelius.titan.core.TitanVertex;
+import com.thinkaurelius.titan.core.TitanVertexQuery;
 import com.thinkaurelius.titan.graphdb.query.TitanPredicate;
 import fj.data.Either;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.stream.Collectors;
+import java.util.stream.StreamSupport;
 import org.apache.commons.lang3.tuple.ImmutablePair;
 import org.apache.commons.lang3.tuple.ImmutableTriple;
-import org.apache.tinkerpop.gremlin.structure.*;
+import org.apache.tinkerpop.gremlin.structure.Direction;
+import org.apache.tinkerpop.gremlin.structure.Edge;
+import org.apache.tinkerpop.gremlin.structure.Element;
+import org.apache.tinkerpop.gremlin.structure.Property;
+import org.apache.tinkerpop.gremlin.structure.Vertex;
 import org.apache.tinkerpop.gremlin.structure.util.ElementHelper;
 import org.openecomp.sdc.be.config.ConfigurationManager;
 import org.openecomp.sdc.be.dao.graph.GraphElementFactory;
-import org.openecomp.sdc.be.dao.graph.datatype.*;
+import org.openecomp.sdc.be.dao.graph.datatype.GraphEdge;
+import org.openecomp.sdc.be.dao.graph.datatype.GraphElementTypeEnum;
+import org.openecomp.sdc.be.dao.graph.datatype.GraphNode;
+import org.openecomp.sdc.be.dao.graph.datatype.GraphRelation;
+import org.openecomp.sdc.be.dao.graph.datatype.RelationEndPoint;
 import org.openecomp.sdc.be.dao.neo4j.GraphEdgeLabels;
 import org.openecomp.sdc.be.dao.neo4j.GraphPropertiesDictionary;
 import org.openecomp.sdc.be.datatypes.enums.NodeTypeEnum;
 import org.openecomp.sdc.be.resources.data.GraphNodeLock;
 import org.openecomp.sdc.common.log.wrappers.Logger;
-import org.springframework.stereotype.Component;
+import org.springframework.beans.factory.annotation.Qualifier;
 
-import java.util.*;
-import java.util.Map.Entry;
-import java.util.stream.Collectors;
-import java.util.stream.StreamSupport;
-@Component("titan-generic-dao")
 public class TitanGenericDao {
 
 	private static final String FAILED_TO_RETRIEVE_GRAPH_STATUS_IS = "Failed to retrieve graph. status is {}";
@@ -51,7 +67,7 @@ public class TitanGenericDao {
 	private static Logger log = Logger.getLogger(TitanGenericDao.class.getName());
 	private static final String LOCK_NODE_PREFIX = "lock_";
 
-	public TitanGenericDao(TitanGraphClient titanClient) {
+	public TitanGenericDao(@Qualifier("titan-client") TitanGraphClient titanClient) {
 		this.titanClient = titanClient;
 		log.info("** TitanGenericDao created");
 	}
diff --git a/catalog-dao/src/main/resources/dao.properties b/catalog-dao/src/main/resources/dao.properties
new file mode 100644
index 0000000000..5306906bd1
--- /dev/null
+++ b/catalog-dao/src/main/resources/dao.properties
@@ -0,0 +1,16 @@
+#
+# Copyright ? 2016-2018 European Support Limited
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+current.heal.version = 0
\ No newline at end of file