frostfs-http-gw/utils/util.go

package utils

import (
	"context"

	"github.com/valyala/fasthttp"
	"go.uber.org/zap"
)

// SetContextToRequest adds new context to fasthttp request.
func SetContextToRequest(ctx context.Context, c *fasthttp.RequestCtx) {
	c.SetUserValue("context", ctx)
}

// GetContextFromRequest returns main context from fasthttp request context.
func GetContextFromRequest(c *fasthttp.RequestCtx) context.Context {
	return c.UserValue("context").(context.Context)
}

type ctxReqLoggerKeyType struct{}

// SetReqLog sets child zap.Logger in the context.
func SetReqLog(ctx context.Context, log *zap.Logger) context.Context {
	if ctx == nil {
		return nil
	}
	return context.WithValue(ctx, ctxReqLoggerKeyType{}, log)
}

// GetReqLog returns log if set.
// If zap.Logger isn't set returns nil.
func GetReqLog(ctx context.Context) *zap.Logger {
	if ctx == nil {
		return nil
	} else if r, ok := ctx.Value(ctxReqLoggerKeyType{}).(*zap.Logger); ok {
		return r
	}
	return nil
}

// GetReqLogOrDefault returns log from context, if it exists.
// If the log is missing from the context, the default logger is returned.
func GetReqLogOrDefault(ctx context.Context, defaultLog *zap.Logger) *zap.Logger {
	log := GetReqLog(ctx)
	if log == nil {
		log = defaultLog
	}
	return log
}