From 8d369ffd2185a99de8f9e469d60f20016a85a7d7 Mon Sep 17 00:00:00 2001
From: tjq <tengjiqi@gmail.com>
Date: Sat, 28 Nov 2020 18:02:37 +0800
Subject: [PATCH] feat: add cron validate controller

---
 .../web/ControllerExceptionHandler.java       |  3 +-
 .../server/web/controller/ToolController.java | 42 +++++++++++++++++++
 2 files changed, 44 insertions(+), 1 deletion(-)
 create mode 100644 powerjob-server/src/main/java/com/github/kfcfans/powerjob/server/web/controller/ToolController.java

diff --git a/powerjob-server/src/main/java/com/github/kfcfans/powerjob/server/web/ControllerExceptionHandler.java b/powerjob-server/src/main/java/com/github/kfcfans/powerjob/server/web/ControllerExceptionHandler.java
index 54c3e75e..92506dc2 100644
--- a/powerjob-server/src/main/java/com/github/kfcfans/powerjob/server/web/ControllerExceptionHandler.java
+++ b/powerjob-server/src/main/java/com/github/kfcfans/powerjob/server/web/ControllerExceptionHandler.java
@@ -3,6 +3,7 @@ package com.github.kfcfans.powerjob.server.web;
 import com.github.kfcfans.powerjob.common.PowerJobException;
 import com.github.kfcfans.powerjob.common.response.ResultDTO;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.exception.ExceptionUtils;
 import org.springframework.http.converter.HttpMessageNotReadableException;
 import org.springframework.messaging.handler.annotation.support.MethodArgumentTypeMismatchException;
 import org.springframework.web.HttpRequestMethodNotSupportedException;
@@ -34,6 +35,6 @@ public class ControllerExceptionHandler {
         } else {
             log.error("[ControllerException] http request failed.", e);
         }
-        return ResultDTO.failed(e.getMessage());
+        return ResultDTO.failed(ExceptionUtils.getMessage(e));
     }
 }
diff --git a/powerjob-server/src/main/java/com/github/kfcfans/powerjob/server/web/controller/ToolController.java b/powerjob-server/src/main/java/com/github/kfcfans/powerjob/server/web/controller/ToolController.java
new file mode 100644
index 00000000..318a865e
--- /dev/null
+++ b/powerjob-server/src/main/java/com/github/kfcfans/powerjob/server/web/controller/ToolController.java
@@ -0,0 +1,42 @@
+package com.github.kfcfans.powerjob.server.web.controller;
+
+import com.github.kfcfans.powerjob.common.OmsConstant;
+import com.github.kfcfans.powerjob.common.response.ResultDTO;
+import com.github.kfcfans.powerjob.server.common.utils.CronExpression;
+import com.google.common.collect.Lists;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.time.DateFormatUtils;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.Date;
+import java.util.List;
+
+/**
+ * 工具 Controller
+ *
+ * @author tjq
+ * @since 2020/11/28
+ */
+@Slf4j
+@RestController
+@RequestMapping("/tool")
+public class ToolController {
+
+    @GetMapping("/validateCron")
+    public ResultDTO<List<String>> calculateNextCronTriggerTime(String expression) throws Exception {
+        CronExpression cronExpression = new CronExpression(expression);
+        List<String> result = Lists.newArrayList();
+        Date time = new Date();
+        for (int i = 0; i < 10; i++) {
+            Date nextValidTime = cronExpression.getNextValidTimeAfter(time);
+            if (nextValidTime == null) {
+                break;
+            }
+            result.add(DateFormatUtils.format(nextValidTime.getTime(), OmsConstant.TIME_PATTERN));
+            time = nextValidTime;
+        }
+        return ResultDTO.success(result);
+    }
+}