[Improvement][Task Plugin] Support Task Plugin output response as a parameter (#13529)

* support http output response as param

* add UT

* fix sqoop UT

docs/docs/en/guide/task/http.md

@@ -16,12 +16,24 @@ This node is used to perform http type tasks such as the common POST and GET req
 
 - Please refer to [DolphinScheduler Task Parameters Appendix](appendix.md) `Default Task Parameters` section for default parameters.
 
-|    **Parameter**     |                                                                        **Description**                                                                        |
-|----------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------|---|--------------------|---|---|-------------------------|-----------------------------------------------------------------------------------------------|
-| Request address      | HTTP request URL.                                                                                                                                             |
-| Request type         | Supports GET, POSt, HEAD, PUT, DELETE.                                                                                                                           || Request parameters | Supports Parameter, Body, Headers. || Verification conditions | Supports default response code, custom response code, content included, content not included. |
-| Verification content | When the verification condition selects a custom response code, the content contains, and the content does not contain, the verification content is required. |
-| Custom parameter     | It is a user-defined parameter of http part, which will replace the content with `${variable}` in the script.                                                 |
+|      **Parameter**      |                                                                        **Description**                                                                        |
+|-------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| Request address         | HTTP request URL.                                                                                                                                             |
+| Request type            | Supports GET, POST, HEAD, PUT, DELETE.                                                                                                                        |
+| Request parameters      | Supports Parameter, Body, Headers.                                                                                                                            |
+| Verification conditions | Supports default response code, custom response code, content included, content not included.                                                                 |
+| Verification content    | When the verification condition selects a custom response code, the content contains, and the content does not contain, the verification content is required. |
+| Custom parameter        | It is a user-defined parameter of http part, which will replace the content with `${variable}` in the script.                                                 |
+
+## Task Output Parameters
+
+| **Task Parameter** |           **Description**           |
+|--------------------|-------------------------------------|
+| response           | VARCHAR, http request return result |
+
+Can use `${taskName.response}` to reference task output parameters in downstream tasks.
+
+For example, if the current task1 is a http task, the downstream task can use `${task1.response}` to reference the output parameters of task1.
 
 ## Example
 

docs/docs/zh/guide/task/http.md

@@ -26,6 +26,16 @@
 | 校验内容     | 当校验条件选择自定义响应码、内容包含、内容不包含时，需填写校验内容   |
 | 自定义参数    | 是 http 局部的用户自定义参数，会替换脚本中以 ${变量} 的内容 |
 
+## 任务输出参数
+
+| **任务参数** |       **描述**        |
+|----------|---------------------|
+| response | VARCHAR, http请求返回结果 |
+
+可以在下游任务中使用 ${taskName.response} 引用任务输出参数。
+
+如，当前task1为http任务, 下游任务可以使用 `${task1.response}` 引用task1的输出参数
+
 ## 任务样例
 
 HTTP 定义了与服务器交互的不同方法，最基本的方法有4种，分别是GET，POST，PUT，DELETE。这里我们使用 http 任务节点，演示使用 POST 向系统的登录页面发送请求，提交数据。

dolphinscheduler-task-plugin/dolphinscheduler-task-api/src/main/java/org/apache/dolphinscheduler/plugin/task/api/parameters/AbstractParameters.java

@@ -199,7 +199,7 @@ public abstract class AbstractParameters implements IParameters {
         return new ResourceParametersHelper();
     }
 
-    private void addPropertyToValPool(Property property) {
+    public void addPropertyToValPool(Property property) {
         varPool.removeIf(p -> p.getProp().equals(property.getProp()));
         varPool.add(property);
     }

dolphinscheduler-task-plugin/dolphinscheduler-task-http/src/main/java/org/apache/dolphinscheduler/plugin/task/http/HttpTask.java

@@ -25,6 +25,8 @@ import org.apache.dolphinscheduler.plugin.task.api.AbstractTask;
 import org.apache.dolphinscheduler.plugin.task.api.TaskCallBack;
 import org.apache.dolphinscheduler.plugin.task.api.TaskException;
 import org.apache.dolphinscheduler.plugin.task.api.TaskExecutionContext;
+import org.apache.dolphinscheduler.plugin.task.api.enums.DataType;
+import org.apache.dolphinscheduler.plugin.task.api.enums.Direct;
 import org.apache.dolphinscheduler.plugin.task.api.model.Property;
 import org.apache.dolphinscheduler.plugin.task.api.parameters.AbstractParameters;
 import org.apache.dolphinscheduler.plugin.task.api.parser.ParamUtils;
@@ -101,6 +103,7 @@ public class HttpTask extends AbstractTask {
             statusCode = String.valueOf(getStatusCode(response));
             body = getResponseBody(response);
             exitStatusCode = validResponse(body, statusCode);
+            addDefaultOutput(body);
             long costTime = System.currentTimeMillis() - startTime;
             log.info(
                     "startTime: {}, httpUrl: {}, httpMethod: {}, costTime : {} milliseconds, statusCode : {}, body : {}, log : {}",
@@ -327,4 +330,14 @@ public class HttpTask extends AbstractTask {
     public AbstractParameters getParameters() {
         return this.httpParameters;
     }
+
+    public void addDefaultOutput(String response) {
+        // put response in output
+        Property outputProperty = new Property();
+        outputProperty.setProp(String.format("%s.%s", taskExecutionContext.getTaskName(), "response"));
+        outputProperty.setDirect(Direct.OUT);
+        outputProperty.setType(DataType.VARCHAR);
+        outputProperty.setValue(response);
+        httpParameters.addPropertyToValPool(outputProperty);
+    }
 }

dolphinscheduler-task-plugin/dolphinscheduler-task-http/src/test/java/org/apache/dolphinscheduler/plugin/task/http/HttpTaskTest.java

@@ -21,7 +21,10 @@ import static org.apache.dolphinscheduler.plugin.task.api.TaskConstants.EXIT_COD
 import static org.apache.dolphinscheduler.plugin.task.api.TaskConstants.EXIT_CODE_SUCCESS;
 
 import org.apache.dolphinscheduler.plugin.task.api.TaskExecutionContext;
+import org.apache.dolphinscheduler.plugin.task.api.enums.DataType;
+import org.apache.dolphinscheduler.plugin.task.api.enums.Direct;
 import org.apache.dolphinscheduler.plugin.task.api.model.Property;
+import org.apache.dolphinscheduler.plugin.task.api.parameters.AbstractParameters;
 
 import org.apache.commons.io.IOUtils;
 import org.apache.http.HttpStatus;
@@ -174,6 +177,22 @@ public class HttpTaskTest {
         Assertions.assertEquals(EXIT_CODE_SUCCESS, httpTask.getExitStatusCode());
     }
 
+    @Test
+    public void testAddDefaultOutput() throws Exception {
+        HttpTask httpTask = generateHttpTask(HttpMethod.GET, HttpStatus.SC_OK);
+        AbstractParameters httpParameters = httpTask.getParameters();
+        String response = "{\"status\": \"success\"}";
+        httpTask.addDefaultOutput(response);
+
+        List<Property> varPool = httpParameters.getVarPool();
+        Assertions.assertEquals(1, varPool.size());
+        Property property = varPool.get(0);
+        Assertions.assertEquals("null.response", property.getProp());
+        Assertions.assertEquals(Direct.OUT, property.getDirect());
+        Assertions.assertEquals(DataType.VARCHAR, property.getType());
+        Assertions.assertEquals(response, property.getValue());
+    }
+
     private String withMockWebServer(String path, int actualResponseCode,
                                      String actualResponseBody) throws IOException {
         MockWebServer server = new MockWebServer();

dolphinscheduler-task-plugin/dolphinscheduler-task-sqoop/src/test/java/org/apache/dolphinscheduler/plugin/task/sqoop/EntityTestUtils.java

@@ -17,6 +17,8 @@
 
 package org.apache.dolphinscheduler.plugin.task.sqoop;
 
+import org.apache.commons.lang3.ObjectUtils;
+
 import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
@@ -75,6 +77,9 @@ public class EntityTestUtils {
                     for (int i = 0; i < parameterTypes.length; i++) {
                         objects[i] = OBJECT_MAP.get(parameterTypes[i].getName());
                     }
+                    if (ObjectUtils.allNull(objects)) {
+                        break;
+                    }
                     method.invoke(tempInstance, objects);
                 } else {
                     method.invoke(tempInstance);