init code

[vfc/nfvo/wfengine.git] / wso2 / baseservice-i18n / src / main / java / org / openo / baseservice / i18n / I18nContainer.java

diff --git a/wso2/baseservice-i18n/src/main/java/org/openo/baseservice/i18n/I18nContainer.java b/wso2/baseservice-i18n/src/main/java/org/openo/baseservice/i18n/I18nContainer.java
new file mode 100644 (file)
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--- /dev/null
+++ b/wso2/baseservice-i18n/src/main/java/org/openo/baseservice/i18n/I18nContainer.java
@@ -0,0 +1,148 @@
+/**
+ * Copyright 2017 ZTE Corporation.
+ *
+ * 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.openo.baseservice.i18n;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.HashMap;
+import java.util.Locale;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Optional;
+
+final class I18nContainer {
+
+  private static Logger logger = LoggerFactory.getLogger(I18nContainer.class);
+
+  private Map<String, I18n> i18ns;
+
+  private I18nContainer() {
+    init();
+  }
+
+
+  private void init() {
+    Map<String, Map<String, I18nItem>> i18nTemps = generateI18ns();
+
+    i18ns = new HashMap<String, I18n>();
+    for (Entry<String, Map<String, I18nItem>> entry : i18nTemps.entrySet()) {
+      String name = entry.getKey();
+      Map<String, I18nItem> items = entry.getValue();
+      for (Entry<String, I18nItem> i18nItemEntry : items.entrySet()) {
+        i18nItemEntry.getValue().unmodifiable();
+      }
+
+      I18n i18n = new I18nImpl(name, items);
+      i18ns.put(name, i18n);
+    }
+  }
+
+  @SuppressWarnings("unchecked")
+  private Map<String, Map<String, I18nItem>> generateI18ns() {
+    Map<String, Map<String, I18nItem>> i18nTemps = new HashMap<String, Map<String, I18nItem>>();
+
+    ClassLoader systemClassLoader = ClassLoader.getSystemClassLoader();
+    JsonResourceScanner.findI18nPaths().forEach((path) -> {
+      HashMap<String, String> fileValues = null;
+      try (InputStream ins = systemClassLoader.getResourceAsStream(path)) {
+        fileValues = I18nJsonUtil.getInstance().readFromJson(ins, HashMap.class);
+        logger.info("load i18n file success: " + path);
+      } catch (IOException ex) {
+        logger.info("load i18n file failed: " + path);
+        logger.info("load i18n file failed: " + systemClassLoader.getResource(path).toString(), ex);
+        return;
+      }
+
+      if (!validateI18nFileValues(fileValues, path)) {
+        return;
+      }
+
+      String fileName = null;
+      int i = path.lastIndexOf("/");
+      if (i > -1) {
+        fileName = path.substring(i + 1);
+      } else {
+        fileName = path;
+      }
+      i = fileName.indexOf("-i18n-");
+      String name = fileName.substring(0, i);
+      String localeSrc = fileName.substring(i + 6, fileName.lastIndexOf("."));
+      if (name.isEmpty()) {
+        logger.info("parse i18n file failed: name is null");
+        return;
+      } else if (localeSrc.isEmpty()) {
+        logger.info("parse i18n file failed: locale is null");
+        return;
+      }
+
+      String[] ss = localeSrc.replace("-", "_").split("_");
+      String locale = null;
+      if (ss.length == 1) {
+        locale = new Locale(ss[0]).toString();
+      } else if (ss.length == 2) {
+        locale = new Locale(ss[0], ss[1]).toString();
+      } else {
+        logger.info("parse i18n file failed: locale is error \"" + localeSrc + "\"");
+        return;
+      }
+
+      Map<String, I18nItem> i18nItems = i18nTemps.get(name);
+      if (i18nItems == null) {
+        i18nItems = new HashMap<String, I18nItem>();
+        i18nTemps.put(name, i18nItems);
+      }
+
+      for (Entry<String, String> entry : fileValues.entrySet()) {
+        String label = entry.getKey();
+
+        I18nItem i18nItem = i18nItems.get(label);
+        if (i18nItem == null) {
+          i18nItem = new I18nItem(label);
+          i18nItems.put(label, i18nItem);
+        }
+
+        i18nItem.addValue(locale, entry.getValue());
+      }
+    });
+    return i18nTemps;
+  }
+
+  private boolean validateI18nFileValues(HashMap<String, String> fileValues, String path) {
+    for (Entry<String, String> entry : fileValues.entrySet()) {
+      if (entry.getValue() != null && !String.class.isInstance(entry.getValue())) {
+        logger.info("parse i18n file failed: " + path + " field's[" + entry.getKey()
+            + "] value is not string type");
+        return false;
+      }
+    }
+    return true;
+  }
+
+  protected static I18nContainer getInstance() {
+    return I18nContainerSingleton.singleton;
+  }
+
+  Optional<I18n> getI18n(String name) {
+    return Optional.ofNullable(this.i18ns.get(name));
+  }
+
+  static class I18nContainerSingleton {
+    private static final I18nContainer singleton = new I18nContainer();
+  }
+}