[Improvement][server] server model ProcessUtils.java code cleaning. (#3382)

* server model ProcessUtils.java code cleaning.

* add checkstyle,server model ProcessUtils.java code cleaning.

* ProcessUtils.java checkstyle.

* update.

* update.
Co-authored-by: Nunknown <zhuangchong-phq@sinosig.com>

dolphinscheduler-server/src/main/java/org/apache/dolphinscheduler/server/utils/ProcessUtils.java

@@ -14,53 +14,52 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.apache.dolphinscheduler.server.utils;
 
-import java.nio.charset.StandardCharsets;
 import org.apache.dolphinscheduler.common.Constants;
 import org.apache.dolphinscheduler.common.utils.CommonUtils;
+import org.apache.dolphinscheduler.common.utils.FileUtils;
 import org.apache.dolphinscheduler.common.utils.LoggerUtils;
 import org.apache.dolphinscheduler.common.utils.OSUtils;
 import org.apache.dolphinscheduler.common.utils.StringUtils;
-import org.apache.commons.io.FileUtils;
 import org.apache.dolphinscheduler.remote.utils.Host;
 import org.apache.dolphinscheduler.server.entity.TaskExecutionContext;
 import org.apache.dolphinscheduler.service.log.LogClientService;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import java.io.File;
-import java.io.IOException;
+import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
-
 /**
- *  mainly used to get the start command line of a process
+ *  mainly used to get the start command line of a process.
  */
 public class ProcessUtils {
   /**
-   * logger
+   * logger.
    */
-  private final static Logger logger = LoggerFactory.getLogger(ProcessUtils.class);
+  private static final Logger logger = LoggerFactory.getLogger(ProcessUtils.class);
 
   /**
    * Initialization regularization, solve the problem of pre-compilation performance,
-   * avoid the thread safety problem of multi-thread operation
+   * avoid the thread safety problem of multi-thread operation.
    */
   private static final Pattern MACPATTERN = Pattern.compile("-[+|-]-\\s(\\d+)");
 
   private static final Pattern WINDOWSATTERN = Pattern.compile("(\\d+)");
 
   /**
-   * build command line characters
+   * build command line characters.
    * @param commandList command list
    * @return command
-   * @throws IOException io exception
    */
-  public static String buildCommandStr(List<String> commandList) throws IOException {
+  public static String buildCommandStr(List<String> commandList) {
     String cmdstr;
     String[] cmd = commandList.toArray(new String[commandList.size()]);
     SecurityManager security = System.getSecurityManager();
@@ -102,7 +101,6 @@ public class ProcessUtils {
         }
       }
 
-
       cmdstr = createCommandLine(
 
               isShellFile(executablePath) ? VERIFICATION_CMD_BAT : VERIFICATION_WIN32, quoteString(executablePath), cmd);
@@ -111,13 +109,12 @@ public class ProcessUtils {
   }
 
   /**
-   * get executable path
+   * get executable path.
    *
    * @param path path
    * @return executable path
-   * @throws IOException io exception
    */
-  private static String getExecutablePath(String path) throws IOException {
+  private static String getExecutablePath(String path) {
     boolean pathIsQuoted = isQuoted(true, path, "Executable name has embedded quote, split the arguments");
 
     File fileToRun = new File(pathIsQuoted ? path.substring(1, path.length() - 1) : path);
@@ -125,7 +122,7 @@ public class ProcessUtils {
   }
 
   /**
-   * whether is shell file
+   * whether is shell file.
    *
    * @param executablePath executable path
    * @return true if endsWith .CMD or .BAT
@@ -136,7 +133,7 @@ public class ProcessUtils {
   }
 
   /**
-   * quote string
+   * quote string.
    *
    * @param arg argument
    * @return format arg
@@ -147,7 +144,7 @@ public class ProcessUtils {
   }
 
   /**
-   * get tokens from command
+   * get tokens from command.
    *
    * @param command command
    * @return token string array
@@ -162,7 +159,7 @@ public class ProcessUtils {
   }
 
   /**
-   * Lazy Pattern
+   * Lazy Pattern.
    */
   private static class LazyPattern {
     // Escape-support version:
@@ -171,34 +168,29 @@ public class ProcessUtils {
   }
 
   /**
-   * verification cmd bat
+   * verification cmd bat.
    */
   private static final int VERIFICATION_CMD_BAT = 0;
 
   /**
-   * verification win32
+   * verification win32.
    */
   private static final int VERIFICATION_WIN32 = 1;
 
   /**
-   * verification legacy
+   * verification legacy.
    */
   private static final int VERIFICATION_LEGACY = 2;
 
   /**
-   * escape verification
+   * escape verification.
    */
   private static final char[][] ESCAPE_VERIFICATION = {{' ', '\t', '<', '>', '&', '|', '^'},
 
-          {' ', '\t', '<', '>'}, {' ', '\t'}};
-
-  /**
-   * matcher
-   */
-  private static Matcher matcher;
+    {' ', '\t', '<', '>'}, {' ', '\t'}};
 
   /**
-   * create command line
+   * create command line.
    * @param verificationType  verification type
    * @param executablePath    executable path
    * @param cmd               cmd
@@ -227,7 +219,7 @@ public class ProcessUtils {
   }
 
   /**
-   * whether is quoted
+   * whether is quoted.
    * @param noQuotesInside
    * @param arg
    * @param errorMessage
@@ -255,7 +247,7 @@ public class ProcessUtils {
   }
 
   /**
-   * whether needs escaping
+   * whether needs escaping.
    *
    * @param verificationType  verification type
    * @param arg               arg
@@ -277,16 +269,14 @@ public class ProcessUtils {
   }
 
   /**
-   * kill yarn application
+   * kill yarn application.
    *
    * @param appIds      app id list
    * @param logger      logger
    * @param tenantCode  tenant code
    * @param executePath     execute path
-   * @throws IOException io exception
    */
-  public static void cancelApplication(List<String> appIds, Logger logger, String tenantCode,String executePath)
-          throws IOException {
+  public static void cancelApplication(List<String> appIds, Logger logger, String tenantCode, String executePath) {
     if (appIds.size() > 0) {
       String appid = appIds.get(appIds.size() - 1);
       String commandFile = String
@@ -324,17 +314,17 @@ public class ProcessUtils {
   }
 
   /**
-   * kill tasks according to different task types
+   * kill tasks according to different task types.
    *
    * @param taskExecutionContext  taskExecutionContext
    */
   public static void kill(TaskExecutionContext taskExecutionContext) {
     try {
       int processId = taskExecutionContext.getProcessId();
-      if(processId == 0 ){
+      if (processId == 0) {
         logger.error("process kill failed, process id :{}, task id:{}",
                 processId, taskExecutionContext.getTaskInstanceId());
-        return ;
+        return;
       }
 
       String cmd = String.format("sudo kill -9 %s", getPidsStr(processId));
@@ -352,13 +342,13 @@ public class ProcessUtils {
   }
 
   /**
-   * get pids str
+   * get pids str.
    *
    * @param processId process id
    * @return pids
    * @throws Exception exception
    */
-  public static String getPidsStr(int processId)throws Exception{
+  public static String getPidsStr(int processId) throws Exception {
     StringBuilder sb = new StringBuilder();
     Matcher mat;
     // pstree pid get sub pids
@@ -370,14 +360,14 @@ public class ProcessUtils {
       mat = WINDOWSATTERN.matcher(pids);
     }
 
-    while (mat.find()){
+    while (mat.find()) {
       sb.append(mat.group(1)).append(" ");
     }
     return sb.toString().trim();
   }
 
   /**
-   * find logs and kill yarn tasks
+   * find logs and kill yarn tasks.
    *
    * @param taskExecutionContext  taskExecutionContext
    */
@@ -392,7 +382,7 @@ public class ProcessUtils {
                 Constants.RPC_PORT,
                 taskExecutionContext.getLogPath());
       } finally {
-        if(logClient != null){
+        if (logClient != null) {
           logClient.close();
         }
       }

dolphinscheduler-server/src/main/java/org/apache/dolphinscheduler/server/worker/task/AbstractCommandExecutor.java

@@ -312,14 +312,8 @@ public abstract class AbstractCommandExecutor {
      * @param commands process builder
      */
     private void printCommand(List<String> commands) {
-        String cmdStr;
-
-        try {
-            cmdStr = ProcessUtils.buildCommandStr(commands);
-            logger.info("task run command:\n{}", cmdStr);
-        } catch (IOException e) {
-            logger.error(e.getMessage(), e);
-        }
+        String cmdStr = ProcessUtils.buildCommandStr(commands);
+        logger.info("task run command:\n{}", cmdStr);
     }
 
     /**

dolphinscheduler-server/src/test/java/org/apache/dolphinscheduler/server/utils/ProcessUtilsTest.java

@@ -40,11 +40,8 @@ public class ProcessUtilsTest {
     public void testBuildCommandStr() {
         List<String> commands = new ArrayList<>();
         commands.add("sudo");
-        try {
-            Assert.assertEquals(ProcessUtils.buildCommandStr(commands), "sudo");
-        } catch (IOException e) {
-            Assert.fail(e.getMessage());
-        }
+        Assert.assertEquals(ProcessUtils.buildCommandStr(commands), "sudo");
+
     }
 
 }