Move required routing validation to IndexRouting

rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/mget/40_routing.yml

@@ -1,29 +1,27 @@
 ---
-"Routing":
+routing:
+  - do:
+      indices.create:
+        index:    test_1
+        body:
+          settings:
+            index:
+              number_of_shards: 5
+              number_of_routing_shards: 5
+              number_of_replicas: 0
 
-
- - do:
-     indices.create:
-       index:    test_1
-       body:
-         settings:
-           index:
-             number_of_shards: 5
-             number_of_routing_shards: 5
-             number_of_replicas: 0
-
- - do:
+  - do:
       cluster.health:
           wait_for_status: green
 
- - do:
+  - do:
       index:
           index:   test_1
           id:      1
           routing: "5"
           body:    { foo: bar }
 
- - do:
+  - do:
       mget:
           index:   test_1
           stored_fields:  [_routing]
@@ -33,10 +31,59 @@
               - { _id: 1, routing: "4" }
               - { _id: 1, routing: "5" }
 
- - is_false:  docs.0.found
- - is_false:  docs.1.found
+  - is_false:  docs.0.found
+  - is_false:  docs.1.found
+  - is_true:   docs.2.found
+  - match:   { docs.2._index:   test_1 }
+  - match:   { docs.2._id:      "1"    }
+  - match:   { docs.2._routing: "5"    }
+
+---
+requires routing:
+  - skip:
+      version: " - 7.99.99"
+      reason: "fails with an unexpected message in 7.x"
+
+  - do:
+      indices.create:
+        index:    test_1
+        body:
+          settings:
+            index:
+              number_of_shards: 5
+              number_of_replicas: 0
+          mappings:
+            _routing:
+              required: true
+
+  - do:
+      index:
+        index:   test_1
+        id:      1
+        routing: "5"
+        body:    { foo: bar }
+
+  - do:
+      indices.put_alias:
+        index: test_1
+        name:  alias
+
+  - do:
+      mget:
+        stored_fields:  [_routing]
+        body:
+          docs:
+            - { _id: 1, _index: test_1 }
+            - { _id: 1, _index: alias }
+            - { _id: 1, _index: test_1, routing: "5" }
 
- - is_true:   docs.2.found
- - match:   { docs.2._index:   test_1 }
- - match:   { docs.2._id:      "1"    }
- - match:   { docs.2._routing: "5"    }
+  - is_false:  docs.0.found
+  - match:   { docs.0.error.reason: "routing is required for [test_1]/[1]" }
+  - match:   { docs.0._index: test_1 }
+  - is_false:  docs.1.found
+  - match:   { docs.1.error.reason: "routing is required for [test_1]/[1]" }
+  - match:   { docs.1._index: test_1 }
+  - is_true:   docs.2.found
+  - match:   { docs.2._index:   test_1 }
+  - match:   { docs.2._id:      "1"    }
+  - match:   { docs.2._routing: "5"    }

rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/mtermvectors/30_routing.yml

@@ -0,0 +1,91 @@
+---
+routing:
+  - do:
+      indices.create:
+        index:    test_1
+        body:
+          settings:
+           index:
+              number_of_shards: 5
+              number_of_replicas: 0
+
+  - do:
+      cluster.health:
+        wait_for_status: green
+
+  - do:
+      index:
+        index:   test_1
+        id:      1
+        routing: "5"
+        body:    { foo: bar baz }
+
+  - do:
+      mtermvectors:
+        index:   test_1
+        fields:  foo
+        body:
+          docs:
+            - { _id: 1 }
+            - { _id: 1, routing: "4" }
+            - { _id: 1, routing: "5" }
+
+  - is_false:  docs.0.found
+  - is_false:  docs.1.found
+  - is_true:   docs.2.found
+  - match:   { docs.2._index:   test_1 }
+  - match:   { docs.2._id:      "1"    }
+  - match:   { docs.2.term_vectors.foo.terms.bar.term_freq: 1 }
+  - match:   { docs.2.term_vectors.foo.terms.baz.term_freq: 1 }
+
+
+---
+requires routing:
+  - skip:
+      version: " - 7.99.99"
+      reason: "fails with an unexpected message in 7.x"
+
+  - do:
+      indices.create:
+        index:    test_1
+        body:
+          settings:
+            index:
+              number_of_shards: 5
+              number_of_replicas: 0
+          mappings:
+            _routing:
+              required: true
+
+  - do:
+      index:
+        index:   test_1
+        id:      1
+        routing: "5"
+        body:    { foo: bar baz }
+
+  - do:
+      indices.put_alias:
+        index: test_1
+        name:  alias
+
+  - do:
+      mtermvectors:
+        fields:  foo
+        body:
+          docs:
+            - { _id: 1, _index: test_1 }
+            - { _id: 1, _index: alias }
+            - { _id: 1, _index: test_1, routing: "5" }
+
+  - is_false:  docs.0.found
+  - match:   { docs.0.error.reason: "routing is required for [test_1]/[1]" }
+  - match:   { docs.0._index: test_1 }
+  - is_false:  docs.1.found
+  - match:   { docs.1.error.reason: "routing is required for [test_1]/[1]" }
+  - match:   { docs.1._index: test_1 }
+  - is_true:   docs.2.found
+  - match:   { docs.2._index:   test_1 }
+  - match:   { docs.2._id:      "1"    }
+  - match:   { docs.2.term_vectors.foo.terms.bar.term_freq: 1 }
+  - match:   { docs.2.term_vectors.foo.terms.baz.term_freq: 1 }

server/src/internalClusterTest/java/org/elasticsearch/action/bulk/BulkIntegrationIT.java

@@ -9,7 +9,6 @@
 package org.elasticsearch.action.bulk;
 
 import org.elasticsearch.ElasticsearchException;
-import org.elasticsearch.Version;
 import org.elasticsearch.action.ActionRequestValidationException;
 import org.elasticsearch.action.admin.indices.alias.Alias;
 import org.elasticsearch.action.admin.indices.mapping.get.GetMappingsResponse;
@@ -114,7 +113,7 @@ public void testBulkWithWriteIndexAndRouting() {
     // allowing the auto-generated timestamp to externally be set would allow making the index inconsistent with duplicate docs
     public void testExternallySetAutoGeneratedTimestamp() {
         IndexRequest indexRequest = new IndexRequest("index1").source(Collections.singletonMap("foo", "baz"));
-        indexRequest.process(Version.CURRENT, null, null); // sets the timestamp
+        indexRequest.process(); // sets the timestamp
         if (randomBoolean()) {
             indexRequest.id("test");
         }

server/src/internalClusterTest/java/org/elasticsearch/routing/SimpleRoutingIT.java

@@ -26,11 +26,9 @@
 import org.elasticsearch.action.update.UpdateResponse;
 import org.elasticsearch.client.Requests;
 import org.elasticsearch.cluster.ClusterState;
-import org.elasticsearch.cluster.routing.OperationRouting;
-import org.elasticsearch.common.settings.ClusterSettings;
-import org.elasticsearch.common.settings.Settings;
+import org.elasticsearch.cluster.metadata.IndexMetadata;
+import org.elasticsearch.cluster.routing.IndexRouting;
 import org.elasticsearch.index.query.QueryBuilders;
-import org.elasticsearch.index.shard.ShardId;
 import org.elasticsearch.rest.RestStatus;
 import org.elasticsearch.test.ESIntegTestCase;
 import org.elasticsearch.xcontent.XContentFactory;
@@ -48,18 +46,17 @@ protected int minimumNumberOfShards() {
     }
 
     public String findNonMatchingRoutingValue(String index, String id) {
-        OperationRouting operationRouting = new OperationRouting(
-            Settings.EMPTY,
-            new ClusterSettings(Settings.EMPTY, ClusterSettings.BUILT_IN_CLUSTER_SETTINGS)
-        );
         ClusterState state = client().admin().cluster().prepareState().all().get().getState();
+        IndexMetadata metadata = state.metadata().index(index);
+        IndexMetadata withoutRoutingRequired = IndexMetadata.builder(metadata).putMapping("{}").build();
+        IndexRouting indexRouting = IndexRouting.fromIndexMetadata(withoutRoutingRequired);
         int routing = -1;
-        ShardId idShard;
-        ShardId routingShard;
+        int idShard;
+        int routingShard;
         do {
-            idShard = operationRouting.shardId(state, index, id, null);
-            routingShard = operationRouting.shardId(state, index, id, Integer.toString(++routing));
-        } while (idShard.getId() == routingShard.id());
+            idShard = indexRouting.getShard(id, null);
+            routingShard = indexRouting.getShard(id, Integer.toString(++routing));
+        } while (idShard == routingShard);
 
         return Integer.toString(routing);
     }

server/src/main/java/org/elasticsearch/action/bulk/TransportBulkAction.java

@@ -28,7 +28,6 @@
 import org.elasticsearch.action.ingest.IngestActionForwarder;
 import org.elasticsearch.action.support.ActionFilters;
 import org.elasticsearch.action.support.HandledTransportAction;
-import org.elasticsearch.action.update.TransportUpdateAction;
 import org.elasticsearch.action.update.UpdateRequest;
 import org.elasticsearch.action.update.UpdateResponse;
 import org.elasticsearch.client.node.NodeClient;
@@ -40,7 +39,6 @@
 import org.elasticsearch.cluster.metadata.IndexAbstraction;
 import org.elasticsearch.cluster.metadata.IndexMetadata;
 import org.elasticsearch.cluster.metadata.IndexNameExpressionResolver;
-import org.elasticsearch.cluster.metadata.MappingMetadata;
 import org.elasticsearch.cluster.metadata.Metadata;
 import org.elasticsearch.cluster.routing.IndexRouting;
 import org.elasticsearch.cluster.service.ClusterService;
@@ -534,11 +532,8 @@ protected void doRun() {
                             prohibitAppendWritesInBackingIndices(docWriteRequest, metadata);
                             prohibitCustomRoutingOnDataStream(docWriteRequest, metadata);
                             IndexRequest indexRequest = (IndexRequest) docWriteRequest;
-                            final IndexMetadata indexMetadata = metadata.index(concreteIndex);
-                            MappingMetadata mappingMd = indexMetadata.mapping();
-                            Version indexCreated = indexMetadata.getCreationVersion();
                             indexRequest.resolveRouting(metadata);
-                            indexRequest.process(indexCreated, mappingMd, concreteIndex.getName());
+                            indexRequest.process();
                             shardId = indexRouting.indexShard(
                                 docWriteRequest.id(),
                                 docWriteRequest.routing(),
@@ -547,19 +542,11 @@ protected void doRun() {
                             );
                             break;
                         case UPDATE:
-                            TransportUpdateAction.resolveAndValidateRouting(
-                                metadata,
-                                concreteIndex.getName(),
-                                (UpdateRequest) docWriteRequest
-                            );
+                            docWriteRequest.routing(metadata.resolveWriteIndexRouting(docWriteRequest.routing(), docWriteRequest.index()));
                             shardId = indexRouting.updateShard(docWriteRequest.id(), docWriteRequest.routing());
                             break;
                         case DELETE:
                             docWriteRequest.routing(metadata.resolveWriteIndexRouting(docWriteRequest.routing(), docWriteRequest.index()));
-                            // check if routing is required, if so, throw error if routing wasn't specified
-                            if (docWriteRequest.routing() == null && metadata.routingRequired(concreteIndex.getName())) {
-                                throw new RoutingMissingException(concreteIndex.getName(), docWriteRequest.id());
-                            }
                             shardId = indexRouting.deleteShard(docWriteRequest.id(), docWriteRequest.routing());
                             break;
                         default:

server/src/main/java/org/elasticsearch/action/bulk/TransportShardBulkAction.java

@@ -32,8 +32,6 @@
 import org.elasticsearch.cluster.ClusterStateObserver;
 import org.elasticsearch.cluster.action.index.MappingUpdatedAction;
 import org.elasticsearch.cluster.action.shard.ShardStateAction;
-import org.elasticsearch.cluster.metadata.IndexMetadata;
-import org.elasticsearch.cluster.metadata.MappingMetadata;
 import org.elasticsearch.cluster.service.ClusterService;
 import org.elasticsearch.common.bytes.BytesReference;
 import org.elasticsearch.common.compress.CompressedXContent;
@@ -288,9 +286,7 @@ static boolean executeBulkItemRequest(
                 case CREATED:
                 case UPDATED:
                     IndexRequest indexRequest = updateResult.action();
-                    IndexMetadata metadata = context.getPrimary().indexSettings().getIndexMetadata();
-                    MappingMetadata mappingMd = metadata.mapping();
-                    indexRequest.process(metadata.getCreationVersion(), mappingMd, updateRequest.concreteIndex());
+                    indexRequest.process();
                     context.setRequestToExecute(indexRequest);
                     break;
                 case DELETED:

server/src/main/java/org/elasticsearch/action/explain/TransportExplainAction.java

@@ -11,7 +11,6 @@
 import org.apache.lucene.search.Explanation;
 import org.elasticsearch.ElasticsearchException;
 import org.elasticsearch.action.ActionListener;
-import org.elasticsearch.action.RoutingMissingException;
 import org.elasticsearch.action.support.ActionFilters;
 import org.elasticsearch.action.support.single.shard.TransportSingleShardAction;
 import org.elasticsearch.cluster.ClusterState;
@@ -85,10 +84,6 @@ protected void resolveRequest(ClusterState state, InternalRequest request) {
         final Set<String> indicesAndAliases = indexNameExpressionResolver.resolveExpressions(state, request.request().index());
         final AliasFilter aliasFilter = searchService.buildAliasFilter(state, request.concreteIndex(), indicesAndAliases);
         request.request().filteringAlias(aliasFilter);
-        // Fail fast on the node that received the request.
-        if (request.request().routing() == null && state.getMetadata().routingRequired(request.concreteIndex())) {
-            throw new RoutingMissingException(request.concreteIndex(), request.request().id());
-        }
     }
 
     @Override

server/src/main/java/org/elasticsearch/action/get/TransportGetAction.java

@@ -9,7 +9,6 @@
 package org.elasticsearch.action.get;
 
 import org.elasticsearch.action.ActionListener;
-import org.elasticsearch.action.RoutingMissingException;
 import org.elasticsearch.action.support.ActionFilters;
 import org.elasticsearch.action.support.single.shard.TransportSingleShardAction;
 import org.elasticsearch.cluster.ClusterState;
@@ -82,10 +81,6 @@ protected ShardIterator shards(ClusterState state, InternalRequest request) {
     protected void resolveRequest(ClusterState state, InternalRequest request) {
         // update the routing (request#index here is possibly an alias)
         request.request().routing(state.metadata().resolveIndexRouting(request.request().routing(), request.request().index()));
-        // Fail fast on the node that received the request.
-        if (request.request().routing() == null && state.getMetadata().routingRequired(request.concreteIndex())) {
-            throw new RoutingMissingException(request.concreteIndex(), request.request().id());
-        }
     }
 
     @Override