--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/main/java/christie/topology/manager/CreateHash.java	Thu Aug 02 11:41:29 2018 +0900
@@ -0,0 +1,73 @@
+package christie.topology.manager;
+
+
+import christie.annotation.Take;
+import christie.codegear.CodeGear;
+
+import christie.codegear.CodeGearManager;
+import org.apache.commons.lang3.RandomStringUtils;
+
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.util.LinkedList;
+
+public class CreateHash extends CodeGear{
+    // this CodeSegment change raw string to MD5
+
+    // Question: orderHashどこで使われているかわかんない
+    //@Take
+    //orderHash;
+
+    @Take
+    LinkedList<String> createdList;
+
+
+    public CreateHash(){ }
+
+    @Override
+    protected void run(CodeGearManager cgm) {
+
+        boolean checkNewStr = false;
+        String raw = null;
+
+        while (!checkNewStr){
+            raw = RandomStringUtils.randomAscii(10);
+            // checking raw String has already created
+            int count = 0;
+            for (String str : createdList) {
+                if (raw.equals(str)) break;
+                count++;
+            }
+
+            if (count == createdList.size()) checkNewStr = true;
+        }
+        createdList.add(raw);
+        getLocalDGM().put("createdList", createdList);
+
+        try { // convert to MD5
+            String MD5 = convertMD5(raw);
+
+            getLocalDGM().put("MD5", MD5);
+        } catch (NoSuchAlgorithmException e) {
+            System.out.println("cannot convert MD5");
+
+        }
+        cgm.setup(new CreateHash());
+    }
+
+    private String convertMD5(String raw) throws NoSuchAlgorithmException{
+        MessageDigest md = MessageDigest.getInstance("MD5");
+        md.update(raw.getBytes());
+        byte[] hash = md.digest();
+        StringBuilder builder = new StringBuilder();
+        for (byte aHash : hash) {
+            if ((0xff & aHash) < 0x10) {
+                builder.append("0" + Integer.toHexString((0xff & aHash)));
+            } else {
+                builder.append(Integer.toHexString((0xff & aHash)));
+            }
+        }
+        return builder.toString();
+    }
+
+}