/
logging.go
174 lines (155 loc) · 5 KB
/
logging.go
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package warden
import (
"context"
"fmt"
"strconv"
"time"
"google.golang.org/grpc"
"google.golang.org/grpc/peer"
"github.com/mapgoo-lab/atreus/pkg/ecode"
"github.com/mapgoo-lab/atreus/pkg/log"
"github.com/mapgoo-lab/atreus/pkg/net/metadata"
)
// Warden Log Flag
const (
// disable all log.
LogFlagDisable = 1 << iota
// disable print args on log.
LogFlagDisableArgs
// disable info level log.
LogFlagDisableInfo
)
type logOption struct {
grpc.EmptyDialOption
grpc.EmptyCallOption
flag int8
}
// WithLogFlag disable client access log.
func WithLogFlag(flag int8) grpc.CallOption {
return logOption{flag: flag}
}
// WithDialLogFlag set client level log behaviour.
func WithDialLogFlag(flag int8) grpc.DialOption {
return logOption{flag: flag}
}
func extractLogCallOption(opts []grpc.CallOption) (flag int8) {
for _, opt := range opts {
if logOpt, ok := opt.(logOption); ok {
return logOpt.flag
}
}
return
}
func extractLogDialOption(opts []grpc.DialOption) (flag int8) {
for _, opt := range opts {
if logOpt, ok := opt.(logOption); ok {
return logOpt.flag
}
}
return
}
func logFn(code int, dt time.Duration) func(context.Context, ...log.D) {
switch {
case code < 0:
return log.Errorv
case dt >= time.Millisecond*500:
// TODO: slowlog make it configurable.
return log.Warnv
case code > 0:
return log.Warnv
}
return log.Infov
}
// clientLogging warden grpc logging
func clientLogging(dialOptions ...grpc.DialOption) grpc.UnaryClientInterceptor {
defaultFlag := extractLogDialOption(dialOptions)
return func(ctx context.Context, method string, req, reply interface{}, cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
logFlag := extractLogCallOption(opts) | defaultFlag
startTime := time.Now()
var peerInfo peer.Peer
opts = append(opts, grpc.Peer(&peerInfo))
// invoker requests
err := invoker(ctx, method, req, reply, cc, opts...)
// after request
code := ecode.Cause(err).Code()
duration := time.Since(startTime)
// monitor
_metricClientReqDur.Observe(int64(duration/time.Millisecond), method)
_metricClientReqCodeTotal.Inc(method, strconv.Itoa(code))
if logFlag&LogFlagDisable != 0 {
return err
}
// TODO: find better way to deal with slow log.
if logFlag&LogFlagDisableInfo != 0 && err == nil && duration < 500*time.Millisecond {
return err
}
logFields := make([]log.D, 0, 7)
logFields = append(logFields, log.KVString("path", method))
logFields = append(logFields, log.KVInt("ret", code))
logFields = append(logFields, log.KVFloat64("ts", duration.Seconds()))
logFields = append(logFields, log.KVString("source", "grpc-access-log"))
if peerInfo.Addr != nil {
logFields = append(logFields, log.KVString("ip", peerInfo.Addr.String()))
}
if logFlag&LogFlagDisableArgs == 0 {
// TODO: it will panic if someone remove String method from protobuf message struct that auto generate from protoc.
logFields = append(logFields, log.KVString("args", req.(fmt.Stringer).String()))
}
if err != nil {
logFields = append(logFields, log.KVString("error", err.Error()), log.KVString("stack", fmt.Sprintf("%+v", err)))
}
logFn(code, duration)(ctx, logFields...)
return err
}
}
// serverLogging warden grpc logging
func serverLogging(logFlag int8) grpc.UnaryServerInterceptor {
return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (interface{}, error) {
startTime := time.Now()
caller := metadata.String(ctx, metadata.Caller)
if caller == "" {
caller = "no_user"
}
var remoteIP string
if peerInfo, ok := peer.FromContext(ctx); ok {
remoteIP = peerInfo.Addr.String()
}
var quota float64
if deadline, ok := ctx.Deadline(); ok {
quota = time.Until(deadline).Seconds()
}
// call server handler
resp, err := handler(ctx, req)
// after server response
code := ecode.Cause(err).Code()
duration := time.Since(startTime)
// monitor
_metricServerReqDur.Observe(int64(duration/time.Millisecond), info.FullMethod, caller)
_metricServerReqCodeTotal.Inc(info.FullMethod, caller, strconv.Itoa(code))
if logFlag&LogFlagDisable != 0 {
return resp, err
}
// TODO: find better way to deal with slow log.
if logFlag&LogFlagDisableInfo != 0 && err == nil && duration < 500*time.Millisecond {
return resp, err
}
logFields := []log.D{
log.KVString("user", caller),
log.KVString("ip", remoteIP),
log.KVString("path", info.FullMethod),
log.KVInt("ret", code),
log.KVFloat64("ts", duration.Seconds()),
log.KVFloat64("timeout_quota", quota),
log.KVString("source", "grpc-access-log"),
}
if logFlag&LogFlagDisableArgs == 0 {
// TODO: it will panic if someone remove String method from protobuf message struct that auto generate from protoc.
logFields = append(logFields, log.KVString("args", req.(fmt.Stringer).String()))
}
if err != nil {
logFields = append(logFields, log.KVString("error", err.Error()), log.KVString("stack", fmt.Sprintf("%+v", err)))
}
logFn(code, duration)(ctx, logFields...)
return resp, err
}
}