introduce settings for module instantiation

net-http-server-application-config/src/main/java/module-info.java

@@ -1,6 +1,3 @@
-import org.xbib.net.http.server.ApplicationModule;
-import org.xbib.net.http.server.application.config.ConfigApplicationModule;
-
 module org.xbib.net.http.server.application.config {
     uses org.xbib.config.ConfigLogger;
     exports org.xbib.net.http.server.application.config;
@@ -8,5 +5,4 @@ module org.xbib.net.http.server.application.config {
     requires org.xbib.net.http.server;
     requires org.xbib.config;
     requires java.logging;
-    provides ApplicationModule with ConfigApplicationModule;
 }

net-http-server-application-config/src/main/java/org/xbib/net/http/server/application/config/ConfigApplicationModule.java

@@ -30,16 +30,12 @@ public class ConfigApplicationModule extends BaseApplicationModule {
 
     private Settings settings;
 
-    public ConfigApplicationModule() {
+    public ConfigApplicationModule(Application application, String name, Settings settings) {
+        super(application, name, settings);
     }
 
     @Override
-    public String getName() {
+    public void onOpen(Application application, Settings settings) {
-        return "config";
-    }
-
-    @Override
-    public void onOpen(Application application) throws Exception {
         String profile = System.getProperty("application.profile");
         if (profile == null) {
             profile = "developer";

net-http-server-application-database/src/main/java/module-info.java

@@ -1,14 +1,11 @@
-import org.xbib.net.http.server.ApplicationModule;
-import org.xbib.net.http.server.application.database.DatabaseApplicationModule;
-
 module org.xbib.net.http.server.application.database {
     requires org.xbib.net;
     requires org.xbib.net.http;
     requires org.xbib.net.http.server;
+    requires org.xbib.config;
     requires org.xbib.jdbc.query;
     requires org.xbib.jdbc.connection.pool;
     requires org.xbib.datastructures.tiny;
     requires java.logging;
     requires java.sql;
-    provides ApplicationModule with DatabaseApplicationModule;
 }

net-http-server-application-database/src/main/java/org/xbib/net/http/server/application/database/DatabaseApplicationModule.java

@@ -9,13 +9,14 @@ import org.xbib.net.http.server.BaseApplicationModule;
 import org.xbib.net.http.server.HttpRequest;
 import org.xbib.net.http.server.HttpServerContext;
 import org.xbib.net.http.server.HttpService;
+import org.xbib.settings.Settings;
 
 import javax.sql.DataSource;
 import java.util.Properties;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
-public class DatabaseApplicationModule extends BaseApplicationModule {
+public class DatabaseApplicationModule<A extends Application> extends BaseApplicationModule {
 
     private static final Logger logger = Logger.getLogger(DatabaseApplicationModule.class.getName());
 
@@ -23,16 +24,12 @@ public class DatabaseApplicationModule extends BaseApplicationModule {
 
     private DatabaseProvider databaseProvider;
 
-    public DatabaseApplicationModule() {
+    public DatabaseApplicationModule(Application application, String name, Settings settings) {
+        super(application, name, settings);
     }
 
     @Override
-    public String getName() {
+    public void onOpen(Application application, Settings settings) throws Exception {
-        return "database";
-    }
-
-    @Override
-    public void onOpen(Application application) throws Exception {
         this.dataSource = createDataSource();
         String flavor = System.getProperty("database.flavor");
         this.databaseProvider = flavor != null ?

net-http-server-application-web/build.gradle

@@ -5,8 +5,6 @@ dependencies {
     api project(':net-http-server-application-config')
     api project(':net-http-template-groovy')
     api libs.jdbc.query
-    implementation libs.settings.datastructures.json
-    implementation libs.settings.datastructures.yaml
     implementation libs.webjars.bootstrap
     implementation libs.webjars.jquery
     implementation libs.webjars.fontawesome

net-http-server-application-web/src/main/java/module-info.java

@@ -9,7 +9,6 @@ module org.xbib.net.http.server.application.web {
     requires org.xbib.net.http.server.netty.secure;
     requires org.xbib.net.http.template.groovy;
     requires org.xbib.datastructures.tiny;
-    requires org.xbib.datastructures.json.tiny;
     requires org.xbib.jdbc.query;
     requires org.xbib.config;
     requires java.logging;

net-http-server-application-web/src/main/java/org/xbib/net/http/server/application/web/WebApplication.java

@@ -10,11 +10,15 @@ import org.xbib.net.http.server.session.IncomingSessionHandler;
 import org.xbib.net.http.server.session.OutgoingSessionHandler;
 import org.xbib.net.http.server.session.Session;
 import org.xbib.net.http.server.session.file.FileJsonSessionCodec;
+import org.xbib.settings.Settings;
 
 public class WebApplication extends BaseApplication {
 
+    private final WebApplicationBuilder builder;
+
     protected WebApplication(WebApplicationBuilder builder) {
         super(builder);
+        this.builder = builder;
     }
 
     public static WebApplicationBuilder builder() {

net-http-server-application-web/src/main/java/org/xbib/net/http/server/application/web/WebApplicationBuilder.java

@@ -1,7 +1,6 @@
 package org.xbib.net.http.server.application.web;
 
 import org.xbib.net.http.server.BaseApplicationBuilder;
-import org.xbib.net.http.server.Application;
 
 import org.xbib.settings.Settings;
 
@@ -11,14 +10,18 @@ public class WebApplicationBuilder extends BaseApplicationBuilder {
 
     protected String name;
 
-    protected Settings settings;
+    protected WebApplicationBuilder() {
-
-    protected WebApplicationBuilder() throws Exception {
         super();
         this.profile = System.getProperty("application.profile");
         this.name = System.getProperty("application.name");
     }
 
+    @Override
+    public WebApplicationBuilder setSettings(Settings settings) {
+        super.setSettings(settings);
+        return this;
+    }
+
     public WebApplicationBuilder setProfile(String profile) {
         this.profile = profile;
         return this;
@@ -29,13 +32,8 @@ public class WebApplicationBuilder extends BaseApplicationBuilder {
         return this;
     }
 
-    public WebApplicationBuilder setSettings(Settings settings) {
-        this.settings = settings;
-        return this;
-    }
-
     @Override
-    public Application build() {
+    public WebApplication build() {
         WebApplication webApplication = new WebApplication(this);
         setupApplication(webApplication);
         return webApplication;

net-http-server-netty/src/main/java/org/xbib/net/http/server/netty/HttpResponse.java

@@ -23,13 +23,11 @@ public class HttpResponse extends BaseHttpResponse {
 
     @Override
     public void close() throws IOException {
-        //logger.log(Level.FINE, "close");
+        builder.close();
-        //builder.internalClose();
     }
 
     @Override
     public void flush() throws IOException {
-        //logger.log(Level.FINE, "flush");
+        builder.flush();
-        //builder.internalFlush();
     }
 }

net-http-server-netty/src/main/java/org/xbib/net/http/server/netty/HttpResponseBuilder.java

@@ -124,12 +124,17 @@ public class HttpResponseBuilder extends BaseHttpResponseBuilder {
         return this;
     }
 
+    public void flush() {
+        internalBufferWrite(Unpooled.buffer(0));
+    }
+
+    public void close() {
+        ctx.close();
+    }
+
     @Override
     public HttpResponse build() {
         Objects.requireNonNull(ctx);
-        //if (shouldFlush()) {
-        //    internalFlush();
-        //}
         if (body != null) {
             internalWrite(body);
         } else if (charBuffer != null && charset != null) {
@@ -141,19 +146,13 @@ public class HttpResponseBuilder extends BaseHttpResponseBuilder {
         } else if (inputStream != null) {
             internalWrite(inputStream, bufferSize, true);
         }
+        if (shouldFlush()) {
+            // really server flush?
+            //flush();
+        }
         return new HttpResponse(this);
     }
 
-    //void internalFlush() {
-    //    logger.log(Level.FINE, "internal flush");
-    //    internalBufferWrite(Unpooled.buffer(0));
-    //}
-
-    //void internalClose() {
-    //    logger.log(Level.FINE, "internal close");
-    //    ctx.close();
-    //}
-
     private void internalWrite(String body) {
         internalWrite(dataBufferFactory.wrap(StandardCharsets.UTF_8.encode(body)));
     }

net-http-server/build.gradle

@@ -1,3 +1,6 @@
 dependencies {
     api project(':net-http')
+    api libs.config
+    implementation libs.settings.datastructures.json
+    implementation libs.settings.datastructures.yaml
 }

net-http-server/src/main/java/module-info.java

@@ -2,6 +2,7 @@ import org.xbib.net.http.server.ApplicationModule;
 
 module org.xbib.net.http.server {
     uses ApplicationModule;
+    uses org.xbib.config.ConfigLogger;
     exports org.xbib.net.http.server;
     exports org.xbib.net.http.server.auth;
     exports org.xbib.net.http.server.cookie;
@@ -23,6 +24,7 @@ module org.xbib.net.http.server {
     requires org.xbib.net.mime;
     requires org.xbib.net.http;
     requires org.xbib.datastructures.common;
+    requires org.xbib.config;
     requires java.logging;
     requires java.naming;
     requires java.sql;

net-http-server/src/main/java/org/xbib/net/http/server/Application.java

@@ -3,6 +3,7 @@ package org.xbib.net.http.server;
 import org.xbib.net.http.HttpAddress;
 import org.xbib.net.http.HttpResponseStatus;
 import org.xbib.net.http.server.session.SessionListener;
+import org.xbib.settings.Settings;
 
 import java.io.Closeable;
 import java.io.IOException;
@@ -26,6 +27,8 @@ public interface Application extends SessionListener, Resolver<Path>, Closeable
 
     String getContextPath();
 
+    Settings getSettings();
+
     Collection<ApplicationModule> getModules();
 
     /**

net-http-server/src/main/java/org/xbib/net/http/server/ApplicationBuilder.java

@@ -26,7 +26,5 @@ public interface ApplicationBuilder {
 
     ApplicationBuilder setZoneId(ZoneId zoneId);
 
-    ApplicationBuilder addModule(ApplicationModule module);
-
     Application build();
 }

net-http-server/src/main/java/org/xbib/net/http/server/ApplicationModule.java

@@ -1,12 +1,13 @@
 package org.xbib.net.http.server;
 
 import org.xbib.net.http.server.session.Session;
+import org.xbib.settings.Settings;
 
-public interface ApplicationModule extends Comparable<ApplicationModule> {
+public interface ApplicationModule {
 
     String getName();
 
-    void onOpen(Application application) throws Exception;
+    void onOpen(Application application, Settings settings) throws Exception;
 
     void onOpen(Application application, HttpServerContext httpServerContext);
 

net-http-server/src/main/java/org/xbib/net/http/server/BaseApplication.java

@@ -14,6 +14,7 @@ import org.xbib.net.http.server.session.Session;
 import org.xbib.net.http.server.util.BlockingThreadPoolExecutor;
 import org.xbib.net.http.server.validate.HttpRequestValidator;
 import org.xbib.net.util.NamedThreadFactory;
+import org.xbib.settings.Settings;
 
 import java.io.Closeable;
 import java.io.IOException;
@@ -55,7 +56,7 @@ public class BaseApplication implements Application {
     protected BaseApplication(BaseApplicationBuilder builder) {
         this.builder = builder;
         this.executor = new BlockingThreadPoolExecutor(builder.blockingThreadCount, builder.blockingQueueCount,
-                new NamedThreadFactory("org-xbib-net-hhtp-server-application"));
+                new NamedThreadFactory("org-xbib-net-http-server-application"));
         this.executor.setRejectedExecutionHandler((runnable, threadPoolExecutor) ->
                         logger.log(Level.SEVERE, "rejected " + runnable + " for thread pool executor = " + threadPoolExecutor));
         this.httpRequestValidator = buildRequestValidator();
@@ -86,6 +87,11 @@ public class BaseApplication implements Application {
         return builder.contextPath;
     }
 
+    @Override
+    public Settings getSettings() {
+        return builder.settings;
+    }
+
     public HttpRouter getRouter() {
         return builder.router;
     }

net-http-server/src/main/java/org/xbib/net/http/server/BaseApplicationBuilder.java

@@ -1,7 +1,12 @@
 package org.xbib.net.http.server;
 
+import org.xbib.config.ConfigLoader;
+import org.xbib.config.ConfigLogger;
+import org.xbib.config.ConfigParams;
+import org.xbib.config.SystemConfigLogger;
 import org.xbib.datastructures.common.ImmutableSet;
 import org.xbib.net.http.server.route.HttpRouter;
+import org.xbib.settings.Settings;
 
 import java.nio.file.Path;
 import java.nio.file.Paths;
@@ -9,6 +14,8 @@ import java.time.ZoneId;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Locale;
+import java.util.Map;
+import java.util.Optional;
 import java.util.ServiceLoader;
 import java.util.Set;
 import java.util.logging.Level;
@@ -18,6 +25,17 @@ public class BaseApplicationBuilder implements ApplicationBuilder {
 
     private static final Logger logger = Logger.getLogger(BaseApplicationBuilder.class.getName());
 
+    private static final ConfigLogger bootLogger;
+
+    static {
+        // early loading of boot logger during static initialization block
+        ServiceLoader<ConfigLogger> serviceLoader = ServiceLoader.load(ConfigLogger.class);
+        Optional<ConfigLogger> optionalBootLogger = serviceLoader.findFirst();
+        bootLogger = optionalBootLogger.orElse(new SystemConfigLogger());
+    }
+
+    protected ClassLoader classLoader;
+
     protected int blockingThreadCount;
 
     protected int blockingQueueCount;
@@ -36,11 +54,18 @@ public class BaseApplicationBuilder implements ApplicationBuilder {
 
     protected ZoneId zoneId;
 
-    protected List<ApplicationModule> applicationModuleList;
-
     protected Set<String> staticFileSuffixes;
 
+    protected ConfigParams configParams;
+
+    protected ConfigLoader configLoader;
+
+    protected Settings settings;
+
+    protected List<ApplicationModule> applicationModuleList;
+
     protected BaseApplicationBuilder() {
+        this.classLoader = getClass().getClassLoader();
         this.blockingThreadCount = Runtime.getRuntime().availableProcessors();
         this.blockingQueueCount = Integer.MAX_VALUE;
         this.home = Paths.get(System.getProperties().containsKey("application.home") ? System.getProperty("application.home") : ".");
@@ -52,6 +77,11 @@ public class BaseApplicationBuilder implements ApplicationBuilder {
         this.applicationModuleList = new ArrayList<>();
     }
 
+    public BaseApplicationBuilder setSettings(Settings settings) {
+        this.settings = settings;
+        return this;
+    }
+
     @Override
     public BaseApplicationBuilder setThreadCount(int blockingThreadCount) {
         this.blockingThreadCount = blockingThreadCount;
@@ -77,19 +107,19 @@ public class BaseApplicationBuilder implements ApplicationBuilder {
     }
 
     @Override
-    public BaseApplicationBuilder setSecret(String secret) {
+    public ApplicationBuilder setSecret(String secret) {
         this.secret = secret;
         return this;
     }
 
     @Override
-    public BaseApplicationBuilder setSessionsEnabled(boolean sessionsEnabled) {
+    public ApplicationBuilder setSessionsEnabled(boolean sessionsEnabled) {
         this.sessionsEnabled = sessionsEnabled;
         return this;
     }
 
     @Override
-    public BaseApplicationBuilder setRouter(HttpRouter router) {
+    public ApplicationBuilder setRouter(HttpRouter router) {
         this.router = router;
         return this;
     }
@@ -106,15 +136,6 @@ public class BaseApplicationBuilder implements ApplicationBuilder {
         return this;
     }
 
-    @Override
-    public ApplicationBuilder addModule(ApplicationModule module) {
-        if (module != null) {
-            applicationModuleList.add(module);
-            logger.log(Level.FINE, "module " + module + " added");
-        }
-        return this;
-    }
-
     public ApplicationBuilder addStaticSuffixes(String... suffixes) {
         ImmutableSet.Builder<String> builder = ImmutableSet.builder();
         for (String suffix : suffixes) {
@@ -124,6 +145,11 @@ public class BaseApplicationBuilder implements ApplicationBuilder {
         return this;
     }
 
+    public ApplicationBuilder registerModule(ApplicationModule applicationModule) {
+        applicationModuleList.add(applicationModule);
+        return this;
+    }
+
     @Override
     public Application build() {
         Application application = new BaseApplication(this);
@@ -132,19 +158,41 @@ public class BaseApplicationBuilder implements ApplicationBuilder {
     }
 
     protected void setupApplication(Application application) {
-        ServiceLoader<ApplicationModule> serviceLoader = ServiceLoader.load(ApplicationModule.class);
+        String profile = System.getProperty("application.profile");
-        for (ApplicationModule module : serviceLoader) {
+        if (profile == null) {
-            applicationModuleList.add(module);
+            profile = "developer";
-            logger.log(Level.FINE, "module " + module + " added");
         }
-        applicationModuleList.forEach(module -> {
+        String[] args = profile.split(";");
+        this.configParams = new ConfigParams()
+                .withArgs(args)
+                .withDirectoryName("application")
+                .withFileNamesWithoutSuffix(args[0])
+                .withSystemEnvironment()
+                .withSystemProperties();
+        this.configLoader = ConfigLoader.getInstance()
+                .withLogger(bootLogger);
+        this.settings = configLoader.load(configParams);
+        for (Map.Entry<String, Settings> entry : settings.getGroups("module").entrySet()) {
+            String moduleName = entry.getKey();
+            Settings moduleSettings = entry.getValue();
+            if (moduleSettings.getAsBoolean("enabled", true)) {
                 try {
-                module.onOpen(application);
+                    String className = moduleSettings.get("class");
-                logger.log(Level.FINE, "module " + module + " opened");
+                    @SuppressWarnings("unchecked")
+                    Class<ApplicationModule> clazz =
+                        (Class<ApplicationModule>) Class.forName(className, true, classLoader);
+                    ApplicationModule applicationModule = clazz.getConstructor(Application.class, String.class, Settings.class)
+                            .newInstance(application, moduleName, moduleSettings);
+                    applicationModuleList.add(applicationModule);
+                    applicationModule.onOpen(application, moduleSettings);
                 } catch (Exception e) {
-                throw new IllegalStateException(e);
+                    logger.log(Level.WARNING, e.getMessage(), e);
+                    throw new IllegalArgumentException("class not found or not loadable: " + e.getMessage());
+                }
+            } else {
+                logger.log(Level.WARNING, "disabled module: " + moduleName);
+            }
         }
-        });
         if (router != null) {
             router.setApplication(application);
         }

net-http-server/src/main/java/org/xbib/net/http/server/BaseApplicationModule.java

@@ -1,14 +1,29 @@
 package org.xbib.net.http.server;
 
 import org.xbib.net.http.server.session.Session;
+import org.xbib.settings.Settings;
 
 public abstract class BaseApplicationModule implements ApplicationModule {
 
-    public BaseApplicationModule() {
+    protected final Application application;
+
+    protected final String name;
+
+    protected final Settings settings;
+
+    public BaseApplicationModule(Application application, String name, Settings settings) {
+        this.application = application;
+        this.name = name;
+        this.settings = settings;
     }
 
     @Override
-    public void onOpen(Application application) throws Exception {
+    public String getName() {
+        return name != null ? name : settings.get("name", "undefined");
+    }
+
+    @Override
+    public void onOpen(Application application, Settings settings) throws Exception {
     }
 
     @Override
@@ -38,9 +53,4 @@ public abstract class BaseApplicationModule implements ApplicationModule {
     @Override
     public void onClose(Application application) {
     }
-
-    @Override
-    public int compareTo(ApplicationModule o) {
-        return getName().compareTo(o.getName());
-    }
 }

net-http-server/src/main/java/org/xbib/net/http/server/BaseHttpResponseBuilder.java

@@ -80,7 +80,7 @@ public abstract class BaseHttpResponseBuilder implements HttpResponseBuilder {
 
     public void reset() {
         this.version = HttpVersion.HTTP_1_1;
-        this.status = null;
+        this.status = HttpResponseStatus.OK;
         this.headers = new HttpHeaders();
         this.trailingHeaders = new HttpHeaders();
         this.contentType = HttpHeaderValues.APPLICATION_OCTET_STREAM;
@@ -302,6 +302,7 @@ public abstract class BaseHttpResponseBuilder implements HttpResponseBuilder {
         if (httpServerConfig != null && httpServerConfig.getServerName() != null) {
             headers.add(HttpHeaderNames.SERVER, httpServerConfig.getServerName());
         }
+        logger.log(Level.FINER, "headers built: " + headers);
     }
 
     public CharBuffer wrapHeaders() {

net-http-server/src/main/java/org/xbib/net/http/server/resource/AbstractResourceHandler.java

@@ -82,12 +82,14 @@ public abstract class AbstractResourceHandler implements HttpHandler {
                 context.response()
                         .addHeader(HttpHeaderNames.LOCATION, resource.getIndexFileName())
                         .setResponseStatus(HttpResponseStatus.TEMPORARY_REDIRECT)
-                        .build().flush(); // flush is important
+                        .build()
+                        .flush(); // write headers
             } else {
                 // send forbidden, we do not allow directory access
                 context.response()
                         .setResponseStatus(HttpResponseStatus.FORBIDDEN)
-                        .build().flush(); // fluish is important
+                        .build()
+                        .flush(); // write status
             }
             context.done();
         } else {
@@ -291,7 +293,7 @@ public abstract class AbstractResourceHandler implements HttpHandler {
                         HttpServerContext context,
                         long offset, long size) throws IOException {
         if (resource instanceof HttpServerResource) {
-            logger.log(Level.FINE, "we have a server resource, render by resource");
+            logger.log(Level.FINER, "we have a server resource, render by resource");
             ((HttpServerResource) resource).render(context);
             return;
         }

net-http-template-groovy/src/main/java/module-info.java

@@ -1,13 +1,10 @@
-import org.xbib.net.http.server.ApplicationModule;
-import org.xbib.net.http.template.groovy.GroovyTemplateApplicationModule;
-
 module org.xbib.net.http.template.groovy {
     exports org.xbib.net.http.template.groovy;
     requires org.xbib.net;
     requires org.xbib.net.http;
     requires org.xbib.net.http.server;
+    requires org.xbib.config;
     requires org.apache.groovy;
     requires org.apache.groovy.templates;
     requires java.logging;
-    provides ApplicationModule with GroovyTemplateApplicationModule;
 }

net-http-template-groovy/src/main/java/org/xbib/net/http/template/groovy/GroovyTemplateApplicationModule.java

@@ -8,6 +8,7 @@ import org.xbib.net.http.server.HttpServerContext;
 import java.io.IOException;
 import java.io.UncheckedIOException;
 import org.xbib.net.http.server.HttpService;
+import org.xbib.settings.Settings;
 
 public class GroovyTemplateApplicationModule extends BaseApplicationModule {
 
@@ -15,16 +16,12 @@ public class GroovyTemplateApplicationModule extends BaseApplicationModule {
 
     private GroovyTemplateRenderer groovyTemplateRenderer;
 
-    public GroovyTemplateApplicationModule() {
+    public GroovyTemplateApplicationModule(Application application, String name, Settings settings) {
+        super(application, name, settings);
     }
 
     @Override
-    public String getName() {
+    public void onOpen(Application application, Settings settings) {
-        return "groovy-template";
-    }
-
-    @Override
-    public void onOpen(Application application) {
         this.groovyMarkupTemplateHandler = new GroovyMarkupTemplateHandler(application);
         this.groovyTemplateRenderer = new GroovyTemplateRenderer();
     }
@@ -40,7 +37,9 @@ public class GroovyTemplateApplicationModule extends BaseApplicationModule {
 
     @Override
     public void onOpen(Application application, HttpServerContext httpServerContext, HttpService httpService, HttpRequest httpRequest) {
+        httpServerContext.attributes().put("request", httpRequest);
         httpServerContext.attributes().put("params", httpRequest.getParameter().asSingleValuedMap());
+        application.getModules().forEach(module -> httpServerContext.attributes().put(module.getName(), module));
     }
 
     @Override

net-http-template-groovy/src/main/java/org/xbib/net/http/template/groovy/GroovyTemplateResource.java

@@ -98,10 +98,10 @@ public class GroovyTemplateResource extends HtmlTemplateResource {
         Template template = templates.get(templatePath);
         Logger templateLogger = Logger.getLogger("template." + getName().replace('/', '.'));
         Binding binding = new Binding();
-        binding.setVariable("variables", binding.getVariables());
         httpServerContext.attributes().forEach(binding::setVariable);
         binding.setVariable("logger", templateLogger);
         binding.setVariable("log", templateLogger);
+        application.getModules().forEach(m -> binding.setVariable(m.getName(), m));
         DefaultTemplateResolver templateResolver = httpServerContext.attributes().get(DefaultTemplateResolver.class, "templateresolver");
         if (templateResolver != null) {
             // handle programmatic locale change plus template making under lock so no other request/response can interrupt us