Revert removal of typed end-points for bulk, search, index APIs (#3524)

Reverts the removal of the docType endpoints for bulk, search, and index REST API.
This enables bulk API bwc with external clients such as Beats and Logstash until a
formal REST Version API mechanism is available for OpenSearch core.

Signed-off-by: Suraj Singh <surajrider@gmail.com>
(cherry picked from commit f48043b)

server/src/main/java/org/opensearch/rest/action/document/RestBulkAction.java

@@ -74,7 +74,15 @@ public RestBulkAction(Settings settings) {
     @Override
     public List<Route> routes() {
         return unmodifiableList(
-            asList(new Route(POST, "/_bulk"), new Route(PUT, "/_bulk"), new Route(POST, "/{index}/_bulk"), new Route(PUT, "/{index}/_bulk"))
+            asList(
+                new Route(POST, "/_bulk"),
+                new Route(PUT, "/_bulk"),
+                new Route(POST, "/{index}/_bulk"),
+                new Route(PUT, "/{index}/_bulk"),
+                // Deprecated typed endpoints.
+                new Route(POST, "/{index}/{type}/_bulk"),
+                new Route(PUT, "/{index}/{type}/_bulk")
+            )
         );
     }
 
@@ -87,6 +95,9 @@ public String getName() {
     public RestChannelConsumer prepareRequest(final RestRequest request, final NodeClient client) throws IOException {
         BulkRequest bulkRequest = Requests.bulkRequest();
         String defaultIndex = request.param("index");
+        if (request.hasParam("type")) {
+            request.param("type");
+        }
         String defaultRouting = request.param("routing");
         FetchSourceContext defaultFetchSourceContext = FetchSourceContext.parseFromRestRequest(request);
         String defaultPipeline = request.param("pipeline");

server/src/main/java/org/opensearch/rest/action/document/RestDeleteAction.java

@@ -57,7 +57,13 @@ public class RestDeleteAction extends BaseRestHandler {
 
     @Override
     public List<Route> routes() {
-        return unmodifiableList(asList(new Route(DELETE, "/{index}/_doc/{id}")));
+        return unmodifiableList(
+            asList(
+                new Route(DELETE, "/{index}/_doc/{id}"),
+                // Deprecated typed endpoint.
+                new Route(DELETE, "/{index}/{type}/{id}")
+            )
+        );
     }
 
     @Override
@@ -67,6 +73,9 @@ public String getName() {
 
     @Override
     public RestChannelConsumer prepareRequest(final RestRequest request, final NodeClient client) throws IOException {
+        if (request.hasParam("type")) {
+            request.param("type");
+        }
         DeleteRequest deleteRequest = new DeleteRequest(request.param("index"), request.param("id"));
         deleteRequest.routing(request.param("routing"));
         deleteRequest.timeout(request.paramAsTime("timeout", DeleteRequest.DEFAULT_TIMEOUT));

server/src/main/java/org/opensearch/rest/action/document/RestIndexAction.java

@@ -63,7 +63,14 @@ public class RestIndexAction extends BaseRestHandler {
 
     @Override
     public List<Route> routes() {
-        return unmodifiableList(asList(new Route(POST, "/{index}/_doc/{id}"), new Route(PUT, "/{index}/_doc/{id}")));
+        return unmodifiableList(
+            asList(
+                new Route(POST, "/{index}/_doc/{id}"),
+                new Route(PUT, "/{index}/_doc/{id}"),
+                new Route(POST, "/{index}/{type}/{id}"),
+                new Route(PUT, "/{index}/{type}/{id}")
+            )
+        );
     }
 
     @Override
@@ -85,7 +92,14 @@ public String getName() {
 
         @Override
         public List<Route> routes() {
-            return unmodifiableList(asList(new Route(POST, "/{index}/_create/{id}"), new Route(PUT, "/{index}/_create/{id}")));
+            return unmodifiableList(
+                asList(
+                    new Route(POST, "/{index}/_create/{id}"),
+                    new Route(PUT, "/{index}/_create/{id}"),
+                    new Route(POST, "/{index}/{type}/{id}/_create"),
+                    new Route(PUT, "/{index}/{type}/{id}/_create")
+                )
+            );
         }
 
         @Override
@@ -122,7 +136,7 @@ public String getName() {
 
         @Override
         public List<Route> routes() {
-            return unmodifiableList(asList(new Route(POST, "/{index}/_doc")));
+            return unmodifiableList(asList(new Route(POST, "/{index}/_doc"), new Route(POST, "/{index}/{type}")));
         }
 
         @Override
@@ -139,6 +153,9 @@ public RestChannelConsumer prepareRequest(RestRequest request, final NodeClient
     @Override
     public RestChannelConsumer prepareRequest(final RestRequest request, final NodeClient client) throws IOException {
         IndexRequest indexRequest = new IndexRequest(request.param("index"));
+        if (request.hasParam("type")) {
+            request.param("type");
+        }
         indexRequest.id(request.param("id"));
         indexRequest.routing(request.param("routing"));
         indexRequest.setPipeline(request.param("pipeline"));

server/src/main/java/org/opensearch/rest/action/search/RestCountAction.java

@@ -71,7 +71,10 @@ public List<Route> routes() {
                 new Route(GET, "/_count"),
                 new Route(POST, "/_count"),
                 new Route(GET, "/{index}/_count"),
-                new Route(POST, "/{index}/_count")
+                new Route(POST, "/{index}/_count"),
+                // Deprecated typed endpoints.
+                new Route(GET, "/{index}/{type}/_count"),
+                new Route(POST, "/{index}/{type}/_count")
             )
         );
     }
@@ -83,6 +86,9 @@ public String getName() {
 
     @Override
     public RestChannelConsumer prepareRequest(final RestRequest request, final NodeClient client) throws IOException {
+        if (request.hasParam("type")) {
+            request.param("type");
+        }
         SearchRequest countRequest = new SearchRequest(Strings.splitStringByCommaToArray(request.param("index")));
         countRequest.indicesOptions(IndicesOptions.fromRequest(request, countRequest.indicesOptions()));
         SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder().size(0).trackTotalHits(true);

server/src/main/java/org/opensearch/rest/action/search/RestSearchAction.java

@@ -105,7 +105,10 @@ public List<Route> routes() {
                 new Route(GET, "/_search"),
                 new Route(POST, "/_search"),
                 new Route(GET, "/{index}/_search"),
-                new Route(POST, "/{index}/_search")
+                new Route(POST, "/{index}/_search"),
+                // Deprecated typed endpoints.
+                new Route(GET, "/{index}/{type}/_search"),
+                new Route(POST, "/{index}/{type}/_search")
             )
         );
     }
@@ -197,6 +200,10 @@ public static void parseSearchRequest(
             searchRequest.scroll(new Scroll(parseTimeValue(scroll, null, "scroll")));
         }
 
+        if (request.hasParam("type")) {
+            request.param("type");
+        }
+
         searchRequest.routing(request.param("routing"));
         searchRequest.preference(request.param("preference"));
         searchRequest.indicesOptions(IndicesOptions.fromRequest(request, searchRequest.indicesOptions()));