[MINOR] Move remoteinterpreter into zengine

zeppelin-interpreter/src/main/java/org/apache/zeppelin/interpreter/remote/RemoteInterpreterServer.java

@@ -218,7 +218,7 @@ protected RemoteInterpreterEventClient getEventClient() {
 
   private void setSystemProperty(Properties properties) {
     for (Object key : properties.keySet()) {
-      if (!RemoteInterpreter.isEnvString((String) key)) {
+      if (!RemoteInterpreterUtils.isEnvString((String) key)) {
         String value = properties.getProperty((String) key);
         if (value == null || value.isEmpty()) {
           System.clearProperty((String) key);

zeppelin-interpreter/src/main/java/org/apache/zeppelin/interpreter/remote/RemoteInterpreterUtils.java

@@ -17,7 +17,6 @@
 
 package org.apache.zeppelin.interpreter.remote;
 
-import org.apache.zeppelin.interpreter.InterpreterGroup;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -73,4 +72,12 @@ public static String getInterpreterSettingId(String intpGrpId) {
     }
     return settingId;
   }
+
+  public static boolean isEnvString(String key) {
+    if (key == null || key.length() == 0) {
+      return false;
+    }
+
+    return key.matches("^[A-Z_0-9]*");
+  }
 }

zeppelin-interpreter/src/main/java/org/apache/zeppelin/resource/ResourcePoolUtils.java

@@ -19,7 +19,6 @@
 
 import com.google.gson.Gson;
 import org.apache.zeppelin.interpreter.InterpreterGroup;
-import org.apache.zeppelin.interpreter.remote.RemoteInterpreterManagedProcess;
 import org.apache.zeppelin.interpreter.remote.RemoteInterpreterProcess;
 import org.apache.zeppelin.interpreter.thrift.RemoteInterpreterService;
 import org.slf4j.Logger;

zeppelin-interpreter/src/main/java/org/apache/zeppelin/scheduler/RemoteScheduler.java

@@ -20,7 +20,6 @@
 import org.apache.thrift.TException;
 import org.apache.zeppelin.interpreter.InterpreterResult;
 import org.apache.zeppelin.interpreter.InterpreterResult.Code;
-import org.apache.zeppelin.interpreter.remote.RemoteInterpreterManagedProcess;
 import org.apache.zeppelin.interpreter.remote.RemoteInterpreterProcess;
 import org.apache.zeppelin.interpreter.thrift.RemoteInterpreterService.Client;
 import org.apache.zeppelin.scheduler.Job.Status;

zeppelin-interpreter/src/test/java/org/apache/zeppelin/interpreter/DummyInterpreter.java

@@ -0,0 +1,43 @@
+package org.apache.zeppelin.interpreter;
+
+import java.util.Properties;
+
+/**
+ *
+ */
+public class DummyInterpreter extends Interpreter {
+
+  public DummyInterpreter(Properties property) {
+    super(property);
+  }
+
+  @Override
+  public void open() {
+
+  }
+
+  @Override
+  public void close() {
+
+  }
+
+  @Override
+  public InterpreterResult interpret(String st, InterpreterContext context) {
+    return null;
+  }
+
+  @Override
+  public void cancel(InterpreterContext context) {
+
+  }
+
+  @Override
+  public FormType getFormType() {
+    return null;
+  }
+
+  @Override
+  public int getProgress(InterpreterContext context) {
+    return 0;
+  }
+}

zeppelin-interpreter/src/test/java/org/apache/zeppelin/interpreter/InterpreterTest.java

@@ -19,7 +19,6 @@
 
 import java.util.Properties;
 
-import org.apache.zeppelin.interpreter.remote.mock.MockInterpreterA;
 import org.apache.zeppelin.user.AuthenticationInfo;
 import org.junit.Test;
 
@@ -31,7 +30,7 @@ public class InterpreterTest {
   public void testDefaultProperty() {
     Properties p = new Properties();
     p.put("p1", "v1");
-    MockInterpreterA intp = new MockInterpreterA(p);
+    Interpreter intp = new DummyInterpreter(p);
 
     assertEquals(1, intp.getProperty().size());
     assertEquals("v1", intp.getProperty().get("p1"));
@@ -42,7 +41,7 @@ public void testDefaultProperty() {
   public void testOverriddenProperty() {
     Properties p = new Properties();
     p.put("p1", "v1");
-    MockInterpreterA intp = new MockInterpreterA(p);
+    Interpreter intp = new DummyInterpreter(p);
     Properties overriddenProperty = new Properties();
     overriddenProperty.put("p1", "v2");
     intp.setProperty(overriddenProperty);
@@ -74,7 +73,7 @@ public void testPropertyWithReplacedContextFields() {
     Properties p = new Properties();
     p.put("p1", "replName #{noteId}, #{paragraphTitle}, #{paragraphId}, #{paragraphText}, #{replName}, #{noteId}, #{user}," +
         " #{authenticationInfo}");
-    MockInterpreterA intp = new MockInterpreterA(p);
+    Interpreter intp = new DummyInterpreter(p);
     intp.setUserName(user);
     String actual = intp.getProperty("p1");
     InterpreterContext.remove();

zeppelin-interpreter/src/main/java/org/apache/zeppelin/interpreter/remote/RemoteInterpreter.java → zeppelin-zengine/src/main/java/org/apache/zeppelin/interpreter/remote/RemoteInterpreter.java

@@ -142,21 +142,13 @@ public RemoteInterpreter(Properties property, String sessionKey, String classNam
   private Map<String, String> getEnvFromInterpreterProperty(Properties property) {
     Map<String, String> env = new HashMap<>();
     for (Object key : property.keySet()) {
-      if (isEnvString((String) key)) {
+      if (RemoteInterpreterUtils.isEnvString((String) key)) {
         env.put((String) key, property.getProperty((String) key));
       }
     }
     return env;
   }
 
-  static boolean isEnvString(String key) {
-    if (key == null || key.length() == 0) {
-      return false;
-    }
-
-    return key.matches("^[A-Z_0-9]*");
-  }
-
   @Override
   public String getClassName() {
     return className;

zeppelin-interpreter/src/test/java/org/apache/zeppelin/interpreter/remote/RemoteInterpreterTest.java → zeppelin-zengine/src/test/java/org/apache/zeppelin/interpreter/remote/RemoteInterpreterTest.java

@@ -854,13 +854,13 @@ public void should_push_local_angular_repo_to_remote() throws Exception {
 
   @Test
   public void testEnvStringPattern() {
-    assertFalse(RemoteInterpreter.isEnvString(null));
-    assertFalse(RemoteInterpreter.isEnvString(""));
-    assertFalse(RemoteInterpreter.isEnvString("abcDEF"));
-    assertFalse(RemoteInterpreter.isEnvString("ABC-DEF"));
-    assertTrue(RemoteInterpreter.isEnvString("ABCDEF"));
-    assertTrue(RemoteInterpreter.isEnvString("ABC_DEF"));
-    assertTrue(RemoteInterpreter.isEnvString("ABC_DEF123"));
+    assertFalse(RemoteInterpreterUtils.isEnvString(null));
+    assertFalse(RemoteInterpreterUtils.isEnvString(""));
+    assertFalse(RemoteInterpreterUtils.isEnvString("abcDEF"));
+    assertFalse(RemoteInterpreterUtils.isEnvString("ABC-DEF"));
+    assertTrue(RemoteInterpreterUtils.isEnvString("ABCDEF"));
+    assertTrue(RemoteInterpreterUtils.isEnvString("ABC_DEF"));
+    assertTrue(RemoteInterpreterUtils.isEnvString("ABC_DEF123"));
   }
 
   @Test