Update appc-common to Karaf 4

[appc.git] / appc-core / appc-common-bundle / src / main / java / org / onap / appc / util / MessageFormatter.java

diff --git a/appc-core/appc-common-bundle/src/main/java/org/onap/appc/util/MessageFormatter.java b/appc-core/appc-common-bundle/src/main/java/org/onap/appc/util/MessageFormatter.java
new file mode 100644 (file)
index 0000000..a46047e
--- /dev/null
+++ b/appc-core/appc-common-bundle/src/main/java/org/onap/appc/util/MessageFormatter.java
@@ -0,0 +1,90 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Copyright (C) 2017 Amdocs
+ * =============================================================================
+ * 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.
+ * 
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.appc.util;
+
+import org.apache.commons.lang3.StringUtils;
+import java.util.*;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+
+public class MessageFormatter {
+    private final static String paramNameRegexGroupName = "paramName";
+
+    /**
+     * start with ${ and after there is one or more characters that are not $ and not } and ended with }
+     */
+    private final static String paramRegex = "\\$\\{(?<paramName>[^}$]+)\\}";
+
+    public static String format(String messageTemplate, Map<String, Object> params) {
+        if (StringUtils.isEmpty(messageTemplate))
+            return "";
+        if (params == null || params.isEmpty())
+            return messageTemplate;
+
+        String formattedMessage = messageTemplate;
+        if (formattedMessage.contains("$")) {
+            for (Map.Entry<String, Object> entry : params.entrySet()) {
+                formattedMessage = formattedMessage.replaceAll("\\$\\{" + entry.getKey() + "\\}",
+                        escapeDollarChar(String.valueOf(entry.getValue())));
+            }
+        }
+
+        return formattedMessage;
+    }
+
+    private static String escapeDollarChar(String msg) {
+        String formatedMsg = msg;
+        if (formatedMsg.contains("$")) {
+            formatedMsg = formatedMsg.replaceAll("\\$", "\\\\\\$");
+
+        }
+        return formatedMsg;
+    }
+
+    public static List<String> getParamsNamesList(String messageTemplate) {
+        List<String> paramsNames = null;
+        if (!StringUtils.isEmpty(messageTemplate)) {
+            paramsNames = new ArrayList<>();
+            Matcher m = Pattern.compile(paramRegex).matcher(messageTemplate);
+            while (m.find()) {
+                String paramName = m.group(paramNameRegexGroupName);
+                paramsNames.add(paramName);
+            }
+        }
+        return paramsNames;
+    }
+
+    public static Set<String> getParamsNamesSet(String messageTemplate) {
+        List<String> paramsNamesList = getParamsNamesList(messageTemplate);
+        Set<String> paramsNamesSet = null;
+        if (paramsNamesList != null && !paramsNamesList.isEmpty()) {
+            paramsNamesSet = new HashSet<String>();
+            for (String paramName : paramsNamesList) {
+                paramsNamesSet.add(paramName);
+            }
+        }
+        return paramsNamesSet;
+    }
+}