CookieToAuth Specifies that the value of the cookie key is converted to the value of the header Authorization.

CurrentDB 如果context里面有事务连接则使用事务连接，否则使用db.

CustomErrorHandler custom Error Handler for HTTP Server.

GetTraceId get traceId from context.

InitTracerProvider init tracer Provider.

InterceptorLogger adapts logrus logger to interceptor logger.

LogWithContext get logger with fields(traceId,spanId).

NewGormDB 初始化DB.

NewTokenBucket 创建令牌桶.

NewTxContext ctx传递事务连接.

NotTxContext context清理事务DB.

ORMOptsFromContext 获取orm的options.

TxFromContext 从ctx获取事务连接.

WithRateLimit return a new unary server interceptors that performs request rate limiting.

WithTrace inject traceId for customErrorHandler.

GormTracer gorm trace追踪.

TokenBucket 令牌桶结构体.