save history when job complete. alibaba#9

core/src/main/java/com/taobao/arthas/core/shell/system/impl/JobImpl.java

@@ -1,6 +1,8 @@
 package com.taobao.arthas.core.shell.system.impl;
 
+import java.io.File;
 import java.util.Date;
+import java.util.List;
 import java.util.concurrent.atomic.AtomicBoolean;
 
 import com.taobao.arthas.core.shell.future.Future;
@@ -11,6 +13,10 @@
 import com.taobao.arthas.core.shell.system.ExecStatus;
 import com.taobao.arthas.core.shell.system.Job;
 import com.taobao.arthas.core.shell.system.Process;
+import com.taobao.arthas.core.shell.term.Term;
+import com.taobao.arthas.core.shell.term.impl.TermImpl;
+import com.taobao.arthas.core.util.Constants;
+import com.taobao.arthas.core.util.FileUtils;
 
 /**
  * @author <a href="mailto:[email protected]">Julien Viet</a>
@@ -234,6 +240,12 @@ public void handle(Integer exitCode) {
             }
             terminateFuture.complete();
 
+            // save command history
+            Term term = shell.term();
+            if (term instanceof TermImpl) {
+                List<int[]> history = ((TermImpl) term).getReadline().getHistory();
+                FileUtils.saveCommandHistory(history, new File(Constants.CMD_HISTORY_FILE));
+            }
         }
     }
 

core/src/main/java/com/taobao/arthas/core/util/FileUtils.java

@@ -104,7 +104,7 @@ public static FileOutputStream openOutputStream(File file, boolean append) throw
     public static void saveCommandHistory(List<int[]> history, File file) {
         OutputStream out = null;
         try {
-            out = openOutputStream(file, false);
+            out = new BufferedOutputStream(openOutputStream(file, false));
             for (int[] command: history) {
                 for (int i : command) {
                     out.write(i);