feat: 系统优化 - ESLint、Tailwind、前端健壮性、后端工程化、运维可观测性

- 前端: ESLint+Prettier配置、Tailwind v4配置、ErrorBoundary、全局AuthLoader优化、ReactQuery分层 - 后端: MinIO凭证移除、Docker统一为govai品牌、zerolog日志封装、错误码枚举、文件上传校验、单元测试(13项全通过) - 运维: 健康检查增强(PG/Redis ping)、Prometheus指标(/metrics端点)、多租户tenant包、RateLimit nil防御 - 移动: citation_prompt.txt → internal/assets/
2026-06-23 10:48:22 +08:00
parent 91f4fac23c
commit 65dc805eb5
28 changed files with 1414 additions and 174 deletions
@@ -0,0 +1,77 @@
+package metrics
+
+import (
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promauto"
+)
+
+var (
+	// HTTP requests
+	HTTPRequestsTotal = promauto.NewCounterVec(
+		prometheus.CounterOpts{
+			Name: "http_requests_total",
+			Help: "Total number of HTTP requests",
+		},
+		[]string{"method", "path", "status"},
+	)
+
+	HTTPRequestDuration = promauto.NewHistogramVec(
+		prometheus.HistogramOpts{
+			Name:    "http_request_duration_seconds",
+			Help:    "HTTP request latency in seconds",
+			Buckets: []float64{0.005, 0.01, 0.025, 0.05, 0.1, 0.25, 0.5, 1, 2.5, 5, 10},
+		},
+		[]string{"method", "path"},
+	)
+
+	// AI / LLM tokens
+	LLMTokensTotal = promauto.NewCounterVec(
+		prometheus.CounterOpts{
+			Name: "ai_tokens_total",
+			Help: "Total number of AI tokens consumed",
+		},
+		[]string{"model", "type"}, // type: prompt | completion
+	)
+
+	LLMRequestsTotal = promauto.NewCounterVec(
+		prometheus.CounterOpts{
+			Name: "ai_requests_total",
+			Help: "Total number of AI/LLM API requests",
+		},
+		[]string{"model", "status"},
+	)
+
+	LLMRequestDuration = promauto.NewHistogramVec(
+		prometheus.HistogramOpts{
+			Name:    "ai_request_duration_seconds",
+			Help:    "AI/LLM API request latency in seconds",
+			Buckets: []float64{0.1, 0.5, 1, 2, 5, 10, 30, 60},
+		},
+		[]string{"model"},
+	)
+
+	// Chat / conversation
+	ConversationsTotal = promauto.NewCounter(
+		prometheus.CounterOpts{
+			Name: "conversations_total",
+			Help: "Total number of chat conversations created",
+		},
+	)
+
+	MessagesTotal = promauto.NewCounterVec(
+		prometheus.CounterOpts{
+			Name: "messages_total",
+			Help: "Total number of chat messages",
+		},
+		[]string{"role"}, // role: user | assistant
+	)
+
+	// Auth
+	AuthFailuresTotal = promauto.NewCounterVec(
+		prometheus.CounterOpts{
+			Name: "auth_failures_total",
+			Help: "Total number of authentication failures",
+		},
+		[]string{"reason"},
+	)
+)