feat: 流水线队列引擎 — max_executors并发控制 + Jenkins风格构建队列+取消

backend/internal/api/handlers/pipeline.go

@@ -3,6 +3,7 @@ package handlers
 import (
 	"net/http"
 	"regexp"
+	"strconv"
 	"time"
 
 	"ezops/internal/models"
@@ -234,6 +235,8 @@ func (h *PipelineHandler) CreatePipeline(c *gin.Context) {
 		WebhookToken:  req.WebhookToken,
 		// 缓存
 		CachePaths: req.CachePaths,
+		// 并发控制
+		MaxExecutors: req.MaxExecutors,
 		Enabled:    true,
 	}
 
@@ -315,6 +318,7 @@ func (h *PipelineHandler) UpdatePipeline(c *gin.Context) {
 	if req.WebhookToken != "" { updates["webhook_token"] = req.WebhookToken }
 	if req.CachePaths != "" { updates["cache_paths"] = req.CachePaths }
 	if req.Enabled != nil { updates["enabled"] = req.Enabled }
+	if req.MaxExecutors > 0 { updates["max_executors"] = req.MaxExecutors }
 
 	if err := h.db.Model(&pipeline).Updates(updates).Error; err != nil {
 		c.JSON(http.StatusInternalServerError, models.Response{
@@ -418,8 +422,8 @@ func (h *PipelineHandler) TriggerPipeline(c *gin.Context) {
 		return
 	}
 
-	// 后台异步执行流水线
-	go h.executePipeline(pipeline, run)
+	// 通过队列引擎执行（尊重 max_executors 并发限制）
+	go h.tryExecuteOrQueue(pipeline, run)
 
 	c.JSON(http.StatusOK, models.Response{Code: 200, Message: "已触发", Data: run})
 }
@@ -548,3 +552,29 @@ func (h *PipelineHandler) WebhookTrigger(c *gin.Context) {
 		},
 	})
 }
+
+// GetPipelineQueue 查询流水线队列状态
+func (h *PipelineHandler) GetPipelineQueue(c *gin.Context) {
+	id := getPipelineID(c)
+	if id == 0 {
+		c.JSON(http.StatusBadRequest, models.Response{Code: 400, Message: "无效的流水线编码"})
+		return
+	}
+	status := h.GetQueueStatus(uint(id))
+	c.JSON(http.StatusOK, models.Response{Code: 200, Data: status})
+}
+
+// CancelQueueItem 取消排队中的构建
+func (h *PipelineHandler) CancelQueueItem(c *gin.Context) {
+	id := getPipelineID(c)
+	runID, _ := strconv.ParseUint(c.Param("runId"), 10, 64)
+	if id == 0 || runID == 0 {
+		c.JSON(http.StatusBadRequest, models.Response{Code: 400, Message: "参数错误"})
+		return
+	}
+	if err := h.CancelQueued(uint(id), uint(runID)); err != nil {
+		c.JSON(http.StatusNotFound, models.Response{Code: 404, Message: err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, models.Response{Code: 200, Message: "已取消"})
+}