[Improvement-17695][ProcedureTask] Support cancel procedure task

dolphinscheduler-task-plugin/dolphinscheduler-task-procedure/src/main/java/org/apache/dolphinscheduler/plugin/task/procedure/ProcedureTask.java

@@ -43,6 +43,7 @@
 import java.sql.CallableStatement;
 import java.sql.Connection;
 import java.sql.SQLException;
+import java.sql.Statement;
 import java.sql.Types;
 import java.util.HashMap;
 import java.util.Map;
@@ -60,6 +61,8 @@ public class ProcedureTask extends AbstractTask {
 
     private final ProcedureTaskExecutionContext procedureTaskExecutionContext;
 
+    private volatile Statement sessionStatement;
+
     /**
      * constructor
      *
@@ -105,30 +108,49 @@ public void handle(TaskCallBack taskCallBack) throws TaskException {
             }
             String proceduerSql = formatSql(sqlParamsMap, paramsMap);
             // call method
-            try (CallableStatement stmt = connection.prepareCall(proceduerSql)) {
+            try (CallableStatement tmpStatement = connection.prepareCall(proceduerSql)) {
+                sessionStatement = tmpStatement;
                 // set timeout
-                setTimeout(stmt);
+                setTimeout(tmpStatement);
 
                 // outParameterMap
-                Map<Integer, Property> outParameterMap = getOutParameterMap(stmt, sqlParamsMap, paramsMap);
+                Map<Integer, Property> outParameterMap = getOutParameterMap(tmpStatement, sqlParamsMap, paramsMap);
 
-                stmt.executeUpdate();
+                tmpStatement.executeUpdate();
 
                 // print the output parameters to the log
-                printOutParameter(stmt, outParameterMap);
+                printOutParameter(tmpStatement, outParameterMap);
 
                 setExitStatusCode(EXIT_CODE_SUCCESS);
             }
         } catch (Exception e) {
+            if (exitStatusCode == TaskConstants.EXIT_CODE_KILL) {
+                log.info("procedure task has been killed");
+                return;
+            }
             setExitStatusCode(EXIT_CODE_FAILURE);
             log.error("procedure task error", e);
             throw new TaskException("Execute procedure task failed", e);
         }
     }
 
     @Override
-    public void cancel() throws TaskException {
-
+    public void cancel() {
+        Statement stmt = this.sessionStatement;
+        if (stmt != null) {
+            try {
+                log.debug("Try to cancel this procedure task");
+                stmt.cancel();
+                setExitStatusCode(TaskConstants.EXIT_CODE_KILL);
+                log.debug("this procedure task was canceled");
+            } catch (SQLException ex) {
+                log.warn("Failed to cancel stored procedure (driver/DB may not support it)", ex);
+                throw new TaskException("Cancel http task failed", ex);
+            }
+        } else {
+            log.warn(
+                    "Attempted to cancel procedure task, but no active statement exists. Possible reasons: task not started, already completed, or canceled.");
+        }
     }
 
     private String formatSql(Map<Integer, Property> sqlParamsMap, Map<String, Property> paramsMap) {