rudimentary json-based message source

openid-connect-server-webapp/src/main/webapp/WEB-INF/application-context.xml

@@ -205,18 +205,23 @@
 	<bean id="clientAssertionAuthenticationProvider" class="org.mitre.openid.connect.assertion.JWTBearerAuthenticationProvider" />
 
 	<!-- Configure locale information -->
-	<bean id="messageSource"
-		class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
-		<property name="basenames">
-			<list>
-				<value>classpath:custom_messages</value>
-				<value>classpath:messages</value>
-			</list>
-		</property>
-		<property name="fallbackToSystemLocale" value="false" />
-		<property name="cacheSeconds" value="180" />
-		<property name="defaultEncoding" value="UTF-8" />
-		<property name="useCodeAsDefaultMessage" value="true" />
+<!-- 	<bean id="messageSource" -->
+<!-- 		class="org.springframework.context.support.ReloadableResourceBundleMessageSource"> -->
+<!-- 		<property name="basenames"> -->
+<!-- 			<list> -->
+<!-- 				<value>classpath:custom_messages</value> -->
+<!-- 				<value>classpath:messages</value> -->
+<!-- 			</list> -->
+<!-- 		</property> -->
+<!-- 		<property name="fallbackToSystemLocale" value="false" /> -->
+<!-- 		<property name="cacheSeconds" value="180" /> -->
+<!-- 		<property name="defaultEncoding" value="UTF-8" /> -->
+<!-- 		<property name="useCodeAsDefaultMessage" value="true" /> -->
+<!-- 	</bean> -->
+
+
+	<bean id="messageSource" class="org.mitre.openid.connect.config.JsonMessageSource">
+		<property name="baseDirectory" value="/resources/js/locale/" />
 	</bean>
 
 	<!-- user services -->

openid-connect-server/src/main/java/org/mitre/openid/connect/config/JsonMessageSource.java

@@ -0,0 +1,152 @@
+/*******************************************************************************
+ * Copyright 2015 The MITRE Corporation
+ *   and the MIT Kerberos and Internet Trust Consortium
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *******************************************************************************/
+
+package org.mitre.openid.connect.config;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.text.MessageFormat;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Locale;
+import java.util.Map;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.context.support.AbstractMessageSource;
+import org.springframework.core.io.Resource;
+
+import com.google.common.base.Splitter;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonIOException;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import com.google.gson.JsonSyntaxException;
+
+/**
+ * @author jricher
+ *
+ */
+public class JsonMessageSource extends AbstractMessageSource {
+	// Logger for this class
+	private static final Logger logger = LoggerFactory.getLogger(JsonMessageSource.class);
+
+	private Resource baseDirectory;
+
+	private Map<Locale, JsonObject> languageMaps = new HashMap<>();
+	
+	@Override
+	protected MessageFormat resolveCode(String code, Locale locale) {
+		
+		JsonObject lang = getLanguageMap(locale);
+
+		MessageFormat mf = getMessageFormat(code, locale, lang);
+		
+		// TODO Auto-generated method stub
+		return mf;
+	}
+
+	/**
+	 * @param code
+	 * @param locale
+	 * @param lang
+	 * @return
+	 */
+	private MessageFormat getMessageFormat(String code, Locale locale, JsonObject lang) {
+		
+		JsonElement e = lang;
+		
+		Iterable<String> parts = Splitter.on('.').split(code);
+		Iterator<String> it = parts.iterator();
+		
+		String value = code;
+		
+		while (it.hasNext()) {
+			String p = it.next();
+				if (e.isJsonObject()) {
+					JsonObject o = e.getAsJsonObject();
+					if (o.has(p)) {
+						e = o.get(p); // found the next level
+						if (!it.hasNext()) {
+							// we've reached a leaf, grab it
+							if (e.isJsonPrimitive()) {
+								value = e.getAsString();
+							}
+						}
+					} else {
+						// didn't find it, stop processing
+						break;
+					}
+				} else {
+					// didn't find it, stop processing
+					break;
+				}
+		}
+		
+		
+		MessageFormat mf = new MessageFormat(value, locale);
+		
+		return mf;
+	}
+
+	/**
+	 * @param locale
+	 * @return
+	 */
+	private JsonObject getLanguageMap(Locale locale) {
+		
+		if (!languageMaps.containsKey(locale)) {
+			try {
+				String filename = locale.getLanguage() + File.separator + "messages.json";
+				
+				Resource r = getBaseDirectory().createRelative(filename);
+				
+				logger.info("No locale loaded, trying to load from " + r);
+				
+				JsonParser parser = new JsonParser();
+				JsonObject obj = (JsonObject) parser.parse(new InputStreamReader(r.getInputStream()));
+				
+				languageMaps.put(locale, obj);
+			} catch (JsonIOException | JsonSyntaxException | IOException e) {
+				logger.error("Unable to load locale", e);
+			}
+		}
+		
+		return languageMaps.get(locale);
+		
+		
+		
+	}
+
+	/**
+	 * @return the baseDirectory
+	 */
+	public Resource getBaseDirectory() {
+		return baseDirectory;
+	}
+
+	/**
+	 * @param baseDirectory the baseDirectory to set
+	 */
+	public void setBaseDirectory(Resource baseDirectory) {
+		this.baseDirectory = baseDirectory;
+	}
+
+}