addTransaction-removeTransaction

elide-core/src/main/java/com/yahoo/elide/Elide.java

@@ -10,6 +10,7 @@
 import com.yahoo.elide.core.DataStoreTransaction;
 import com.yahoo.elide.core.HttpStatus;
 import com.yahoo.elide.core.RequestScope;
+import com.yahoo.elide.core.TransactionRegistry;
 import com.yahoo.elide.core.datastore.inmemory.InMemoryDataStore;
 import com.yahoo.elide.core.exceptions.ForbiddenAccessException;
 import com.yahoo.elide.core.exceptions.HttpStatusException;
@@ -57,6 +58,7 @@
 import java.io.IOException;
 import java.lang.reflect.InvocationTargetException;
 import java.util.Set;
+import java.util.UUID;
 import java.util.function.Supplier;
 
 import javax.validation.ConstraintViolationException;
@@ -76,7 +78,7 @@ public class Elide {
     @Getter private final AuditLogger auditLogger;
     @Getter private final DataStore dataStore;
     @Getter private final JsonApiMapper mapper;
-
+    @Getter private final TransactionRegistry transactionRegistry;
     /**
      * Instantiates a new Elide instance.
      *
@@ -88,6 +90,7 @@ public Elide(ElideSettings elideSettings) {
         this.dataStore = new InMemoryDataStore(elideSettings.getDataStore());
         this.dataStore.populateEntityDictionary(elideSettings.getDictionary());
         this.mapper = elideSettings.getMapper();
+        this.transactionRegistry = new TransactionRegistry();
 
         elideSettings.getSerdes().forEach((targetType, serde) -> {
             CoerceUtil.register(targetType, serde);
@@ -278,7 +281,10 @@ protected ElideResponse handleRequest(boolean isReadOnly, User user,
                                           Supplier<DataStoreTransaction> transaction,
                                           Handler<DataStoreTransaction, User, HandlerResult> handler) {
         boolean isVerbose = false;
+        UUID requestId = null;
         try (DataStoreTransaction tx = transaction.get()) {
+            requestId = tx.getRequestId();
+            transactionRegistry.addRunningTransaction(requestId, tx);
             HandlerResult result = handler.handle(tx, user);
             RequestScope requestScope = result.getRequestScope();
             isVerbose = requestScope.getPermissionExecutor().isVerbose();
@@ -347,6 +353,7 @@ protected ElideResponse handleRequest(boolean isReadOnly, User user,
             throw e;
 
         } finally {
+            transactionRegistry.removeRunningTransaction(requestId);
             auditLogger.clear();
         }
     }

elide-core/src/main/java/com/yahoo/elide/core/DataStoreTransaction.java

@@ -17,7 +17,7 @@
 import java.io.Serializable;
 import java.util.Iterator;
 import java.util.Set;
-
+import java.util.UUID;
 /**
  * Wraps the Database Transaction type.
  */
@@ -31,7 +31,6 @@ public enum FeatureSupport {
         PARTIAL,
         NONE
     }
-
     /**
      * Save the updated object.
      *
@@ -229,7 +228,7 @@ default Object getAttribute(Object entity,
      * @param entity - The object which owns the attribute.
      * @param attribute - the attribute to set.
      * @param scope - contains request level metadata.
-     */
+      */
     default void setAttribute(Object entity,
                               Attribute attribute,
                               RequestScope scope) {
@@ -263,4 +262,9 @@ default boolean supportsSorting(Class<?> entityClass, Sorting sorting) {
     default boolean supportsPagination(Class<?> entityClass, FilterExpression expression) {
         return true;
     }
+    /**
+     * Transaction ID for each transaction
+     * @return UUID id
+     */
+    UUID getRequestId();
 }

elide-core/src/main/java/com/yahoo/elide/core/DataStoreTransactionImplementation.java

@@ -0,0 +1,22 @@
+/*
+ * Copyright 2020, Yahoo Inc.
+ * Licensed under the Apache License, Version 2.0
+ * See LICENSE file in project root for terms.
+ */
+package com.yahoo.elide.core;
+
+import lombok.Getter;
+
+import java.util.UUID;
+
+/**
+ * Data Store Transaction Implementation to return transaction id
+ */
+public abstract class DataStoreTransactionImplementation implements DataStoreTransaction {
+    @Getter private final UUID requestId = UUID.randomUUID();
+
+    @Override
+    public UUID getRequestId() {
+        return requestId;
+    }
+}

elide-core/src/main/java/com/yahoo/elide/core/TransactionRegistry.java

@@ -5,44 +5,33 @@
  */
 package com.yahoo.elide.core;
 
-import lombok.Data;
+import lombok.Getter;
 
+import java.util.HashMap;
+import java.util.Map;
 import java.util.Set;
+import java.util.UUID;
+import java.util.stream.Collectors;
 /**
- * Transaction Registry interface to surface transaction details to other parts of Elide.
- */
-
-public interface TransactionRegistry {
-    /**
-     * @see RequestScope
-     * @see DataStoreTransaction
-     */
-    @Data
-    public static class TransactionEntry {
-        public RequestScope request;
-        public DataStoreTransaction transaction;
+* Transaction Registry class.
+*/
+@Getter
+public class TransactionRegistry {
+    private Map<UUID, DataStoreTransaction> transactionMap = new HashMap<>();
+    public Set<DataStoreTransaction> getRunningTransactions() {
+        Set<DataStoreTransaction> transactions = transactionMap.values().stream().collect(Collectors.toSet());
+        return transactions;
     }
 
-    /**
-     * @return all running transactions
-     */
-    Set<TransactionEntry> getRunningTransactions();
-
-    /**
-     * @param requestId
-     * @return matching running transaction
-     */
-    Set<TransactionEntry> getRunningTransaction(String requestId);
+    public DataStoreTransaction getRunningTransaction(UUID requestId) {
+        return transactionMap.get(requestId);
+    }
 
-    /**
-     * Adds running transaction
-     * @param transactionEntry TransactionEntry transactionEntry
-     */
-    void addRunningTransaction(TransactionEntry transactionEntry);
+    public void addRunningTransaction(UUID requestId, DataStoreTransaction tx) {
+        transactionMap.put(requestId, tx);
+    }
 
-    /**
-     * Removes running transaction when we call cancel on it
-     * @param transactionEntry TransactionEntry transactionEntry
-     */
-    void removeRunningTransaction(TransactionEntry transactionEntry);
+    public void removeRunningTransaction(UUID requestId) {
+        transactionMap.remove(requestId);
+    }
 }

elide-core/src/main/java/com/yahoo/elide/core/datastore/inmemory/HashMapStoreTransaction.java

@@ -6,6 +6,7 @@
 package com.yahoo.elide.core.datastore.inmemory;
 
 import com.yahoo.elide.core.DataStoreTransaction;
+import com.yahoo.elide.core.DataStoreTransactionImplementation;
 import com.yahoo.elide.core.EntityDictionary;
 import com.yahoo.elide.core.RequestScope;
 import com.yahoo.elide.core.exceptions.TransactionException;
@@ -27,7 +28,7 @@
 /**
  * HashMapDataStore transaction handler.
  */
-public class HashMapStoreTransaction implements DataStoreTransaction {
+public class HashMapStoreTransaction extends DataStoreTransactionImplementation {
     private final Map<Class<?>, Map<String, Object>> dataStore;
     private final List<Operation> operations;
     private final EntityDictionary dictionary;

elide-core/src/main/java/com/yahoo/elide/core/datastore/inmemory/InMemoryStoreTransaction.java

@@ -7,6 +7,7 @@
 package com.yahoo.elide.core.datastore.inmemory;
 
 import com.yahoo.elide.core.DataStoreTransaction;
+import com.yahoo.elide.core.DataStoreTransactionImplementation;
 import com.yahoo.elide.core.Path;
 import com.yahoo.elide.core.PersistentResource;
 import com.yahoo.elide.core.RequestScope;
@@ -40,10 +41,9 @@
  * Data Store Transaction that wraps another transaction and provides in-memory filtering, soring, and pagination
  * when the underlying transaction cannot perform the equivalent function.
  */
-public class InMemoryStoreTransaction implements DataStoreTransaction {
+public class InMemoryStoreTransaction extends DataStoreTransactionImplementation implements DataStoreTransaction {
 
     private final DataStoreTransaction tx;
-
     private static final Comparator<Object> NULL_SAFE_COMPARE = (a, b) -> {
         if (a == null && b == null) {
             return 0;

elide-core/src/main/java/com/yahoo/elide/core/datastore/wrapped/TransactionWrapper.java

@@ -7,6 +7,7 @@
 package com.yahoo.elide.core.datastore.wrapped;
 
 import com.yahoo.elide.core.DataStoreTransaction;
+import com.yahoo.elide.core.DataStoreTransactionImplementation;
 import com.yahoo.elide.core.RequestScope;
 import com.yahoo.elide.core.filter.expression.FilterExpression;
 import com.yahoo.elide.request.Attribute;
@@ -25,7 +26,7 @@
  */
 @Data
 @AllArgsConstructor
-public abstract class TransactionWrapper implements DataStoreTransaction {
+public abstract class TransactionWrapper extends DataStoreTransactionImplementation {
     protected DataStoreTransaction tx;
 
     @Override

elide-core/src/test/java/com/yahoo/elide/core/DataStoreTransactionTest.java

@@ -25,7 +25,7 @@
 import java.io.Serializable;
 import java.util.Arrays;
 
-public class DataStoreTransactionTest implements DataStoreTransaction {
+public class DataStoreTransactionTest extends DataStoreTransactionImplementation implements DataStoreTransaction {
     private static final String NAME = "name";
     private static final Attribute NAME_ATTRIBUTE = Attribute.builder().name(NAME).type(String.class).build();
     private static final String ENTITY = "entity";

elide-datastore/elide-datastore-aggregation/src/main/java/com/yahoo/elide/datastores/aggregation/AggregationDataStoreTransaction.java

@@ -5,7 +5,7 @@
  */
 package com.yahoo.elide.datastores.aggregation;
 
-import com.yahoo.elide.core.DataStoreTransaction;
+import com.yahoo.elide.core.DataStoreTransactionImplementation;
 import com.yahoo.elide.core.RequestScope;
 import com.yahoo.elide.datastores.aggregation.metadata.models.Table;
 import com.yahoo.elide.datastores.aggregation.query.Query;
@@ -15,13 +15,11 @@
 import com.google.common.annotations.VisibleForTesting;
 
 import java.io.IOException;
-
 /**
  * Transaction handler for {@link AggregationDataStore}.
  */
-public class AggregationDataStoreTransaction implements DataStoreTransaction {
+public class AggregationDataStoreTransaction extends DataStoreTransactionImplementation {
     private QueryEngine queryEngine;
-
     public AggregationDataStoreTransaction(QueryEngine queryEngine) {
         this.queryEngine = queryEngine;
     }

elide-datastore/elide-datastore-hibernate3/src/main/java/com/yahoo/elide/datastores/hibernate3/HibernateTransaction.java

@@ -6,6 +6,7 @@
 package com.yahoo.elide.datastores.hibernate3;
 
 import com.yahoo.elide.core.DataStoreTransaction;
+import com.yahoo.elide.core.DataStoreTransactionImplementation;
 import com.yahoo.elide.core.EntityDictionary;
 import com.yahoo.elide.core.Path;
 import com.yahoo.elide.core.RequestScope;
@@ -48,13 +49,12 @@
  * Hibernate Transaction implementation.
  */
 @Slf4j
-public class HibernateTransaction implements DataStoreTransaction {
+public class HibernateTransaction extends DataStoreTransactionImplementation {
 
     private final Session session;
     private final SessionWrapper sessionWrapper;
     private final LinkedHashSet<Runnable> deferredTasks = new LinkedHashSet<>();
     private final boolean isScrollEnabled;
-
     /**
      * Constructor.
      *

elide-datastore/elide-datastore-hibernate5/src/main/java/com/yahoo/elide/datastores/hibernate5/HibernateTransaction.java

@@ -6,6 +6,7 @@
 package com.yahoo.elide.datastores.hibernate5;
 
 import com.yahoo.elide.core.DataStoreTransaction;
+import com.yahoo.elide.core.DataStoreTransactionImplementation;
 import com.yahoo.elide.core.EntityDictionary;
 import com.yahoo.elide.core.Path;
 import com.yahoo.elide.core.RequestScope;
@@ -48,13 +49,12 @@
  * Hibernate Transaction implementation.
  */
 @Slf4j
-public class HibernateTransaction implements DataStoreTransaction {
+public class HibernateTransaction extends DataStoreTransactionImplementation {
 
     private final Session session;
     private final SessionWrapper sessionWrapper;
     private final LinkedHashSet<Runnable> deferredTasks = new LinkedHashSet<>();
     private final boolean isScrollEnabled;
-
     /**
      * Constructor.
      *

elide-datastore/elide-datastore-inmemorydb/src/main/java/com/yahoo/elide/datastores/inmemory/HashMapStoreTransaction.java

@@ -7,7 +7,10 @@
 
 import com.yahoo.elide.core.EntityDictionary;
 
+import lombok.Getter;
+
 import java.util.Map;
+import java.util.UUID;
 import java.util.concurrent.atomic.AtomicLong;
 
 /**
@@ -16,6 +19,7 @@
  */
 @Deprecated
 public class HashMapStoreTransaction extends com.yahoo.elide.core.datastore.inmemory.HashMapStoreTransaction {
+    @Getter private final UUID requestId = UUID.randomUUID();
     public HashMapStoreTransaction(Map<Class<?>, Map<String, Object>> dataStore,
                                    EntityDictionary dictionary, Map<Class<?>, AtomicLong> typeIds) {
         super(dataStore, dictionary, typeIds);

elide-datastore/elide-datastore-jpa/src/main/java/com/yahoo/elide/datastores/jpa/transaction/AbstractJpaTransaction.java

@@ -6,6 +6,7 @@
 package com.yahoo.elide.datastores.jpa.transaction;
 
 import com.yahoo.elide.core.DataStoreTransaction;
+import com.yahoo.elide.core.DataStoreTransactionImplementation;
 import com.yahoo.elide.core.EntityDictionary;
 import com.yahoo.elide.core.Path;
 import com.yahoo.elide.core.RequestScope;
@@ -47,7 +48,7 @@
  * Base JPA transaction implementation class.
  */
 @Slf4j
-public abstract class AbstractJpaTransaction implements JpaTransaction {
+public abstract class AbstractJpaTransaction extends DataStoreTransactionImplementation implements JpaTransaction {
     private static final Predicate<Collection<?>> IS_PERSISTENT_COLLECTION =
             new PersistentCollectionChecker();
 

elide-datastore/elide-datastore-jpa/src/main/java/com/yahoo/elide/datastores/jpa/transaction/JtaTransaction.java

@@ -22,7 +22,6 @@
 @Slf4j
 public class JtaTransaction extends AbstractJpaTransaction {
     private final UserTransaction transaction;
-
     public JtaTransaction(EntityManager entityManager) {
         this(entityManager, lookupUserTransaction());
     }

elide-datastore/elide-datastore-jpa/src/main/java/com/yahoo/elide/datastores/jpa/transaction/NonJtaTransaction.java

@@ -19,7 +19,6 @@
 @Slf4j
 public class NonJtaTransaction extends AbstractJpaTransaction {
     private final EntityTransaction transaction;
-
     public NonJtaTransaction(EntityManager entityManager) {
         super(entityManager);
         this.transaction = entityManager.getTransaction();

elide-datastore/elide-datastore-multiplex/src/main/java/com/yahoo/elide/datastores/multiplex/MultiplexReadTransaction.java

@@ -13,7 +13,6 @@
  * Multiplex transaction handler.
  */
 public class MultiplexReadTransaction extends MultiplexTransaction {
-
     public MultiplexReadTransaction(MultiplexManager multiplexManager) {
         super(multiplexManager);
     }

elide-datastore/elide-datastore-multiplex/src/main/java/com/yahoo/elide/datastores/multiplex/MultiplexTransaction.java

@@ -7,6 +7,7 @@
 
 import com.yahoo.elide.core.DataStore;
 import com.yahoo.elide.core.DataStoreTransaction;
+import com.yahoo.elide.core.DataStoreTransactionImplementation;
 import com.yahoo.elide.core.EntityDictionary;
 import com.yahoo.elide.core.RelationshipType;
 import com.yahoo.elide.core.RequestScope;
@@ -32,7 +33,7 @@
  * Multiplex transaction handler.  Process each sub-database transactions within a single transaction.
  * If any commit fails in process, reverse any commits already completed.
  */
-public abstract class MultiplexTransaction implements DataStoreTransaction {
+public abstract class MultiplexTransaction extends DataStoreTransactionImplementation {
     protected final LinkedHashMap<DataStore, DataStoreTransaction> transactions;
     protected final MultiplexManager multiplexManager;
     protected final DataStoreTransaction lastDataStoreTransaction;