Add a MD5 Util Class

[holmes/common.git] / holmes-actions / src / main / java / org / onap / holmes / common / utils / Md5Util.java

diff --git a/holmes-actions/src/main/java/org/onap/holmes/common/utils/Md5Util.java b/holmes-actions/src/main/java/org/onap/holmes/common/utils/Md5Util.java
new file mode 100644 (file)
index 0000000..1c06b52
--- /dev/null
+++ b/holmes-actions/src/main/java/org/onap/holmes/common/utils/Md5Util.java
@@ -0,0 +1,45 @@
+/*
+ * 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.onap.holmes.common.utils;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.google.common.hash.HashCode;
+import com.google.common.hash.HashFunction;
+import com.google.common.hash.Hashing;
+import java.nio.charset.Charset;
+import net.sf.json.JSONObject;
+
+public class Md5Util {
+
+    private static HashFunction hf = Hashing.md5();
+    private static Charset defaultCharset = Charset.forName("UTF-8");
+
+    private Md5Util() {
+
+    }
+
+    public static String md5(String data) {
+        String actualData = data == null ? "" : data;
+        HashCode hash = hf.newHasher().putString(actualData, defaultCharset).hash();
+        return hash.toString();
+    }
+
+    public static String md5(Object data) throws JsonProcessingException {
+        String actualData = data == null ? "{}" : JacksonUtil.beanToJson(data);
+        return md5(actualData);
+    }
+}