GetStyle/PutStyle extension for WFS3, dataset level resources

src/community/wfs3/README.md

@@ -9,4 +9,6 @@ WFS 3.0 hackaton first, and then further developed to match Draft 1 spec and con
 Implementation wise:
 * The module basically acts as an internal proxy around WFS 2.0, using a  servlet filter to adapt protocols. The long term approach would likely be to have a new MVCDispatcher that allows usage of Spring annotations instead (TBD).
 
-
+This implementation contains the following prototype WFS3 extensions:
+* Tiles extension, returning MapBOX/JSON/TopoJSON tiles
+* Styles extension, with the ability to get/put/delete styles (must be secured using service security)

src/community/wfs3/pom.xml

@@ -103,6 +103,18 @@
       <classifier>tests</classifier>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>org.geoserver.extension</groupId>
+      <artifactId>gs-css</artifactId>
+      <version>${project.version}</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.geoserver.community</groupId>
+      <artifactId>gs-mbstyle</artifactId>
+      <version>${project.version}</version>
+      <scope>test</scope>
+    </dependency>
     <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-test</artifactId>

src/community/wfs3/src/main/java/org/geoserver/wfs3/AbstractWFS3Extension.java

@@ -0,0 +1,38 @@
+/* (c) 2019 Open Source Geospatial Foundation - all rights reserved
+ * This code is licensed under the GPL 2.0 license, available at the root
+ * application directory.
+ */
+package org.geoserver.wfs3;
+
+import io.swagger.v3.core.util.Yaml;
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.media.Schema;
+import io.swagger.v3.oas.models.parameters.Parameter;
+import java.util.Map;
+import org.geoserver.platform.ServiceException;
+
+public abstract class AbstractWFS3Extension implements WFS3Extension {
+
+    protected void addSchemasAndParameters(OpenAPI api, OpenAPI template) {
+        // and add all schemas and parameters
+        Components apiComponents = api.getComponents();
+        Components tileComponents = template.getComponents();
+        Map<String, Schema> tileSchemas = tileComponents.getSchemas();
+        apiComponents.getSchemas().putAll(tileSchemas);
+        Map<String, Parameter> tileParameters = tileComponents.getParameters();
+        apiComponents.getParameters().putAll(tileParameters);
+    }
+
+    /**
+     * Reads the template to customize (each time, as the object tree is not thread safe nor
+     * cloneable not serializable)
+     */
+    protected OpenAPI readTemplate(String source) {
+        try {
+            return Yaml.mapper().readValue(source, OpenAPI.class);
+        } catch (Exception e) {
+            throw new ServiceException(e);
+        }
+    }
+}