Add builtin procedure dbms.resampleOutdatedIndexes

community/kernel/src/main/java/org/neo4j/kernel/builtinprocs/BuiltInProcedures.java

@@ -149,6 +149,16 @@ public void resampleIndex( @Name( "label" ) String labelName,
         }
     }
 
+    @Description( "Schedule resampling of all outdated indexes." )
+    @Procedure( name = "db.resampleOutdatedIndexes", mode = READ )
+    public void resampleOutdatedIndexes()
+    {
+        try ( IndexProcedures indexProcedures = indexProcedures() )
+        {
+            indexProcedures.resampleOutdatedIndexes();
+        }
+    }
+
     @Description( "List all constraints in the database." )
     @Procedure( name = "db.constraints", mode = READ )
     public Stream<ConstraintResult> listConstraints()

community/kernel/src/main/java/org/neo4j/kernel/builtinprocs/IndexProcedures.java

@@ -68,6 +68,11 @@ public void resampleIndex( String labelName, String propertyKeyName ) throws Pro
                 formatIndex( labelName, propertyKeyName ) ) );
     }
 
+    public void resampleOutdatedIndexes()
+    {
+        indexingService.triggerIndexSampling( IndexSamplingMode.TRIGGER_REBUILD_UPDATED );
+    }
+
     private int getLabelId( String labelName ) throws ProcedureException
     {
         int labelId = operations.labelGetForName( labelName );

community/kernel/src/test/java/org/neo4j/kernel/builtinprocs/BuiltInProceduresTest.java

@@ -180,6 +180,7 @@ public void shouldListCorrectBuiltinProcedures() throws Throwable
             record( "db.propertyKeys", "db.propertyKeys() :: (propertyKey :: STRING?)", "List all property keys in the database." ),
             record( "db.relationshipTypes", "db.relationshipTypes() :: (relationshipType :: STRING?)", "List all relationship types in the database." ),
             record( "db.resampleIndex", "db.resampleIndex(label :: STRING?, property :: STRING?) :: VOID", "Schedule resampling of an index." ),
+            record( "db.resampleOutdatedIndexes", "db.resampleOutdatedIndexes() :: VOID", "Schedule resampling of all outdated indexes." ),
             record( "dbms.components", "dbms.components() :: (name :: STRING?, versions :: LIST? OF STRING?, edition :: STRING?)", "List DBMS components and their versions." ),
             record( "dbms.procedures", "dbms.procedures() :: (name :: STRING?, signature :: STRING?, description :: STRING?)", "List all procedures in the DBMS." ),
             record( "dbms.functions", "dbms.functions() :: (name :: STRING?, signature :: STRING?, description :: STRING?)", "List all user functions in the DBMS." ),

community/kernel/src/test/java/org/neo4j/kernel/builtinprocs/ResampleOutdatedIndexesProcedureTest.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2002-2016 "Neo Technology,"
+ * Network Engine for Objects in Lund AB [http://neotechnology.com]
+ *
+ * This file is part of Neo4j.
+ *
+ * Neo4j is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.neo4j.kernel.builtinprocs;
+
+import org.junit.Test;
+
+import org.neo4j.kernel.api.exceptions.ProcedureException;
+import org.neo4j.kernel.api.exceptions.schema.SchemaRuleNotFoundException;
+import org.neo4j.kernel.impl.api.index.IndexingService;
+import org.neo4j.kernel.impl.api.index.sampling.IndexSamplingMode;
+
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+
+public class ResampleOutdatedIndexesProcedureTest
+{
+    private final IndexingService indexingService = mock( IndexingService.class );
+    private final IndexProcedures procedure = new IndexProcedures( new StubKernelTransaction( null ), indexingService );
+
+    @Test
+    public void shouldTriggerResampling() throws SchemaRuleNotFoundException, ProcedureException
+    {
+        procedure.resampleOutdatedIndexes();
+
+        verify( indexingService ).triggerIndexSampling( IndexSamplingMode.TRIGGER_REBUILD_UPDATED );
+    }
+}

community/kernel/src/test/java/org/neo4j/kernel/impl/api/integrationtest/BuiltInProceduresIT.java

@@ -111,6 +111,8 @@ public void listProcedures() throws Throwable
                         "timeOutSeconds = 300 :: INTEGER?) :: VOID", "Wait for an index to come online."} ),
                 equalTo( new Object[]{"db.resampleIndex", "db.resampleIndex(label :: STRING?, property :: STRING?) " +
                         ":: VOID", "Schedule resampling of an index."} ),
+                equalTo( new Object[]{"db.resampleOutdatedIndexes", "db.resampleOutdatedIndexes() :: VOID",
+                        "Schedule resampling of all outdated indexes."} ),
                 equalTo( new Object[]{"db.propertyKeys", "db.propertyKeys() :: (propertyKey :: STRING?)", "List all property keys in the database."} ),
                 equalTo( new Object[]{"db.labels", "db.labels() :: (label :: STRING?)", "List all labels in the database."} ),
                 equalTo( new Object[]{"db.relationshipTypes", "db.relationshipTypes() :: (relationshipType :: " +