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package server
import (
"context"
"time"
"github.com/hashicorp/go-hclog"
"google.golang.org/grpc"
"google.golang.org/grpc/metadata"
)
// logUnaryInterceptor returns a gRPC unary interceptor that inserts a hclog.Logger
// into the request context.
//
// Additionally, logUnaryInterceptor logs request and response metadata. If verbose
// is set to true, the request and response attributes are logged too.
func logUnaryInterceptor(logger hclog.Logger, verbose bool) grpc.UnaryServerInterceptor {
return func(
ctx context.Context,
req interface{},
info *grpc.UnaryServerInfo,
handler grpc.UnaryHandler) (interface{}, error) {
start := time.Now()
// Log the request.
{
var reqLogArgs []interface{}
md, ok := metadata.FromIncomingContext(ctx)
if ok {
reqLogArgs = append(reqLogArgs, "metadata", md)
}
// Log the request's attributes only if verbose is set to true.
if verbose {
reqLogArgs = append(reqLogArgs, "request", req)
}
logger.Info(info.FullMethod+" request", reqLogArgs...)
}
// Invoke the handler.
ctx = hclog.WithContext(ctx, logger)
resp, err := handler(ctx, req)
// Log the response.
{
respLogArgs := []interface{}{
"error", err,
"duration", time.Since(start).String(),
}
// Log the response's attributes only if verbose is set to true.
if verbose {
respLogArgs = append(respLogArgs, "response", resp)
}
logger.Info(info.FullMethod+" response", respLogArgs...)
}
return resp, err
}
}
// TODO(spox): make a client stream interceptor for ruby runtime
// logUnaryInterceptor returns a gRPC unary interceptor that inserts a hclog.Logger
// into the request context.
//
// Additionally, logUnaryInterceptor logs request and response metadata. If verbose
// is set to true, the request and response attributes are logged too.
func logStreamInterceptor(logger hclog.Logger, verbose bool) grpc.StreamServerInterceptor {
return func(
srv interface{},
ss grpc.ServerStream,
info *grpc.StreamServerInfo,
handler grpc.StreamHandler) error {
start := time.Now()
// Log the request.
logger.Info(info.FullMethod + " request")
// Invoke the handler.
err := handler(srv, &logStream{
ServerStream: ss,
context: hclog.WithContext(ss.Context(), logger),
})
// Log the response.
logger.Info(info.FullMethod+" response",
"error", err,
"duration", time.Since(start).String(),
)
return err
}
}
type logStream struct {
grpc.ServerStream
context context.Context
}
func (s *logStream) Context() context.Context {
return s.context
}
|
