Add FeatureService to v2 APIs

base/ca/src/main/java/org/dogtagpki/server/ca/rest/v2/CAFeatureServlet.java

@@ -0,0 +1,20 @@
+//
+// Copyright Red Hat, Inc.
+//
+// SPDX-License-Identifier: GPL-2.0-or-later
+//
+package org.dogtagpki.server.ca.rest.v2;
+
+import javax.servlet.annotation.WebServlet;
+
+import org.dogtagpki.server.rest.v2.FeatureServlet;
+
+/**
+ * @author Marco Fargetta {@literal <[email protected]>}
+ */
+@WebServlet(
+        name = "caFeature",
+        urlPatterns = "/v2/config/features/*")
+public class CAFeatureServlet extends FeatureServlet {
+    private static final long serialVersionUID = 1L;
+}

base/ca/src/main/java/org/dogtagpki/server/ca/rest/v2/filters/EmptyACL.java

@@ -9,7 +9,7 @@
 
 import org.dogtagpki.server.rest.v2.filters.ACLFilter;
 
-@WebFilter(servletNames = {"caInfo", "caCert", "caCertRequest", "caJobs"})
+@WebFilter(servletNames = {"caInfo", "caCert", "caCertRequest", "caJobs", "caFeature"})
 public class EmptyACL extends ACLFilter {
 
     private static final long serialVersionUID = 1L;

base/ca/src/main/java/org/dogtagpki/server/ca/rest/v2/filters/EmptyAuthMethod.java

@@ -9,7 +9,7 @@
 
 import org.dogtagpki.server.rest.v2.filters.AuthMethodFilter;
 
-@WebFilter(servletNames = {"caInfo", "caCert", "caCertRequest", "caJobs"})
+@WebFilter(servletNames = {"caInfo", "caCert", "caCertRequest", "caJobs", "caFeature"})
 public class EmptyAuthMethod extends AuthMethodFilter {
 
     private static final long serialVersionUID = 1L;

base/server/src/main/java/org/dogtagpki/server/rest/v2/FeatureServlet.java

@@ -0,0 +1,89 @@
+//
+// Copyright Red Hat, Inc.
+//
+// SPDX-License-Identifier: GPL-2.0-or-later
+//
+package org.dogtagpki.server.rest.v2;
+
+import java.io.PrintWriter;
+import java.util.ArrayList;
+import java.util.Enumeration;
+import java.util.Map;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.netscape.certsrv.base.ResourceNotFoundException;
+import com.netscape.certsrv.base.WebAction;
+import com.netscape.certsrv.system.Feature;
+import com.netscape.cmscore.apps.CMSEngine;
+import com.netscape.cmscore.apps.EngineConfig;
+import com.netscape.cmscore.base.ConfigStore;
+
+/**
+ * @author Marco Fargetta {@literal <[email protected]>}
+ * @author alee
+ */
+public class FeatureServlet extends PKIServlet {
+    private static final long serialVersionUID = 1L;
+    public static final Logger logger = LoggerFactory.getLogger(FeatureServlet.class);
+
+    @WebAction(method = HttpMethod.GET, paths = {""})
+    public void listFeatures(HttpServletRequest request, HttpServletResponse response) throws Exception {
+        HttpSession session = request.getSession();
+        logger.debug("FeatureServlet.listFeatures(): session: {}", session.getId());
+
+        CMSEngine engine = getEngine();
+        EngineConfig config = engine.getConfig();
+
+        ConfigStore cs = config.getSubStore("features", ConfigStore.class);
+        ArrayList<Feature> features = new ArrayList<>();
+        Enumeration<String> tags = cs.getSubStoreNames().elements();
+        while (tags.hasMoreElements()) {
+            String tag = tags.nextElement();
+            Feature feature = createFeature(cs, tag);
+            features.add(feature);
+        }
+        ObjectMapper mapper = new ObjectMapper();
+        PrintWriter out = response.getWriter();
+        out.println(mapper.writeValueAsString(features));
+    }
+
+    @WebAction(method = HttpMethod.GET, paths = {"{}"})
+    public void getFeature(HttpServletRequest request, HttpServletResponse response) throws Exception {
+        HttpSession session = request.getSession();
+        logger.debug("FeatureServlet.getFeature(): session: {}", session.getId());
+        String[] pathElement = request.getPathInfo().substring(1).split("/");
+        String featureId = pathElement[0];
+
+        CMSEngine engine = getEngine();
+        EngineConfig config = engine.getConfig();
+        ConfigStore cs = config.getSubStore("features", ConfigStore.class);
+        Enumeration<String> tags = cs.getSubStoreNames().elements();
+        while(tags.hasMoreElements()) {
+            String tag = tags.nextElement();
+            if (tag.equals(featureId)) {
+                Feature feature = createFeature(cs, tag);
+                PrintWriter out = response.getWriter();
+                out.println(feature.toJSON());
+                return;
+            }
+        }
+        throw new ResourceNotFoundException("Feature " + featureId + " not supported");
+    }
+
+    private Feature createFeature(ConfigStore cs, String tag) {
+        Map<String, String> props = cs.getSubStore(tag).getProperties();
+        Feature feature = new Feature();
+        feature.setId(tag);
+        feature.setEnabled(Boolean.parseBoolean(props.get("enabled")));
+        feature.setDescription(props.get("description"));
+        feature.setVersion(props.get("version"));
+        return feature;
+    }
+}