logs

internal/apps/admin/logs/routers.go

@@ -0,0 +1,131 @@
+/*
+Copyright 2025-2026 linux.do
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package logs
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"github.com/linux-do/credit/internal/logger"
+	"github.com/linux-do/credit/internal/util"
+)
+
+const defaultLimit = 200
+
+// logsResponse 历史日志查询响应
+type logsResponse struct {
+	Lines      []logger.LogEntry `json:"lines"`
+	HasMore    bool              `json:"has_more"`
+	NextCursor int               `json:"next_cursor"` // 用于加载更早日志的 cursor
+}
+
+// GetLogs 获取历史日志
+// @Summary 获取系统日志
+// @Description 分页获取系统历史日志，cursor=0 获取最新日志，cursor>0 获取更早日志
+// @Tags admin
+// @Produce json
+// @Security SessionCookie
+// @Param cursor query int false "日志游标，0=获取最新" default(0)
+// @Param limit query int false "每页条数" default(200)
+// @Success 200 {object} util.ResponseAny{data=logs.logsResponse} "日志列表"
+// @Failure 401 {object} util.ResponseAny "未登录"
+// @Failure 403 {object} util.ResponseAny "无管理员权限"
+// @Router /api/v1/admin/logs [get]
+func GetLogs(c *gin.Context) {
+	cursorStr := c.DefaultQuery("cursor", "0")
+	limitStr := c.DefaultQuery("limit", "200")
+
+	var cursor, limit int
+	if _, err := parsePositiveInt(cursorStr, &cursor); err != nil {
+		c.JSON(http.StatusBadRequest, util.Err("无效的 cursor 参数"))
+		return
+	}
+	if _, err := parsePositiveInt(limitStr, &limit); err != nil || limit <= 0 {
+		limit = defaultLimit
+	}
+	if limit > 500 {
+		limit = 500
+	}
+
+	entries, hasMore := logger.GlobalRingBuffer.Query(cursor, limit)
+
+	resp := logsResponse{
+		Lines:   entries,
+		HasMore: hasMore,
+	}
+	if len(entries) > 0 {
+		resp.NextCursor = entries[0].Index
+	}
+
+	c.JSON(http.StatusOK, util.OK(resp))
+}
+
+// wsMessage WebSocket 消息格式
+type wsMessage struct {
+	Type string          `json:"type"` // "log" | "error"
+	Data json.RawMessage `json:"data"`
+}
+
+// HandleLogWebSocket WebSocket 端点，实时推送系统日志
+// @Summary 系统日志实时推送
+// @Description 通过 WebSocket 实时推送系统日志，需要管理员权限
+// @Tags admin
+// @Router /api/v1/admin/logs/ws [get]
+func HandleLogWebSocket(c *gin.Context) {
+	upgrader := getUpgrader()
+
+	conn, err := upgrader.Upgrade(c.Writer, c.Request, nil)
+	if err != nil {
+		return
+	}
+	defer conn.Close()
+
+	// 订阅 ring buffer
+	ch := logger.GlobalRingBuffer.Subscribe()
+	defer logger.GlobalRingBuffer.Unsubscribe(ch)
+
+	// 在独立 goroutine 中读取客户端消息（保持连接活跃 + 检测断开）
+	done := make(chan struct{})
+	go func() {
+		defer close(done)
+		for {
+			_, _, err := conn.ReadMessage()
+			if err != nil {
+				return
+			}
+		}
+	}()
+
+	// 主循环：推送日志
+	for {
+		select {
+		case <-done:
+			return
+		case entry, ok := <-ch:
+			if !ok {
+				return
+			}
+			data, _ := json.Marshal(entry)
+			msg := wsMessage{Type: "log", Data: data}
+			payload, _ := json.Marshal(msg)
+			if err := conn.WriteMessage(1, payload); err != nil {
+				return
+			}
+		}
+	}
+}

internal/apps/admin/logs/utils.go

@@ -0,0 +1,47 @@
+/*
+Copyright 2025-2026 linux.do
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package logs
+
+import (
+	"net/http"
+	"strconv"
+
+	"github.com/gorilla/websocket"
+)
+
+// getUpgrader 返回 WebSocket 升级器
+func getUpgrader() *websocket.Upgrader {
+	return &websocket.Upgrader{
+		CheckOrigin: func(r *http.Request) bool {
+			return true // CORS 由 Gin 中间件处理
+		},
+	}
+}
+
+// parsePositiveInt 解析非负整数字符串
+func parsePositiveInt(s string, result *int) (bool, error) {
+	if s == "" {
+		*result = 0
+		return true, nil
+	}
+	n, err := strconv.Atoi(s)
+	if err != nil || n < 0 {
+		return false, err
+	}
+	*result = n
+	return true, nil
+}