feat: playbook执行日志实时流式推送(SSE) + 任务详情显示原始日志

internal/handlers/handlers.go

@@ -2,6 +2,7 @@ package handlers
 
 import (
 	"net/http"
+	"time"
 
 	"github.com/ansible-deploy/internal/models"
 	"github.com/ansible-deploy/internal/services"
@@ -325,6 +326,57 @@ func (h *AnsibleHandler) GetTask(c *gin.Context) {
 	})
 }
 
+// StreamTaskOutput SSE 流式推送任务日志
+func (h *AnsibleHandler) StreamTaskOutput(c *gin.Context) {
+	id := c.Param("id")
+	task := h.service.GetTask(id)
+	if task == nil {
+		c.JSON(http.StatusNotFound, gin.H{"code": 404, "msg": "任务不存在"})
+		return
+	}
+
+	c.Header("Content-Type", "text/event-stream")
+	c.Header("Cache-Control", "no-cache")
+	c.Header("Connection", "keep-alive")
+
+	lastLen := 0
+	for {
+		// 检查客户端是否断开
+		if c.Request.Context().Err() != nil {
+			return
+		}
+
+		task := h.service.GetTask(id)
+		if task == nil {
+			return
+		}
+
+		output := task.Output
+		if len(output) > lastLen {
+			// 只发送增量
+			increment := output[lastLen:]
+			lastLen = len(output)
+			c.SSEvent("log", increment)
+			c.Writer.Flush()
+		}
+
+		if task.Status != "running" {
+			// 任务完成，发送最终状态
+			c.SSEvent("status", task.Status)
+			c.SSEvent("error", task.Error)
+			c.Writer.Flush()
+			return
+		}
+
+		// 等 500ms 再推送
+		select {
+		case <-time.After(500 * time.Millisecond):
+		case <-c.Request.Context().Done():
+			return
+		}
+	}
+}
+
 // CancelTask 取消任务
 func (h *AnsibleHandler) CancelTask(c *gin.Context) {
 	id := c.Param("id")