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client_interceptors_test.go
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package grpc_zap_test
import (
"io"
"runtime"
"strings"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/stretchr/testify/suite"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"github.com/grpc-ecosystem/go-grpc-middleware/logging/zap"
pb_testproto "github.com/grpc-ecosystem/go-grpc-middleware/testing/testproto"
"go.uber.org/zap/zapcore"
)
func customClientCodeToLevel(c codes.Code) zapcore.Level {
if c == codes.Unauthenticated {
// Make this a special case for tests, and an error.
return zapcore.ErrorLevel
}
level := grpc_zap.DefaultClientCodeToLevel(c)
return level
}
func TestZapClientSuite(t *testing.T) {
if strings.HasPrefix(runtime.Version(), "go1.7") {
t.Skipf("Skipping due to json.RawMessage incompatibility with go1.7")
return
}
opts := []grpc_zap.Option{
grpc_zap.WithLevels(customClientCodeToLevel),
}
b := newBaseZapSuite(t)
b.InterceptorTestSuite.ClientOpts = []grpc.DialOption{
grpc.WithUnaryInterceptor(grpc_zap.UnaryClientInterceptor(b.log, opts...)),
grpc.WithStreamInterceptor(grpc_zap.StreamClientInterceptor(b.log, opts...)),
}
suite.Run(t, &zapClientSuite{b})
}
type zapClientSuite struct {
*zapBaseSuite
}
func (s *zapClientSuite) TestPing() {
_, err := s.Client.Ping(s.SimpleCtx(), goodPing)
require.NoError(s.T(), err, "there must be not be an error on a successful call")
msgs := s.getOutputJSONs()
require.Len(s.T(), msgs, 1, "one log statement should be logged")
assert.Equal(s.T(), msgs[0]["grpc.service"], "mwitkow.testproto.TestService", "all lines must contain service name")
assert.Equal(s.T(), msgs[0]["grpc.method"], "Ping", "all lines must contain method name")
assert.Equal(s.T(), msgs[0]["msg"], "finished client unary call", "must contain correct message")
assert.Equal(s.T(), msgs[0]["span.kind"], "client", "all lines must contain the kind of call (client)")
assert.Equal(s.T(), msgs[0]["level"], "debug", "must be logged on debug level.")
assert.Contains(s.T(), msgs[0], "grpc.time_ms", "interceptor log statement should contain execution time")
}
func (s *zapClientSuite) TestPingList() {
stream, err := s.Client.PingList(s.SimpleCtx(), goodPing)
require.NoError(s.T(), err, "should not fail on establishing the stream")
for {
_, err := stream.Recv()
if err == io.EOF {
break
}
require.NoError(s.T(), err, "reading stream should not fail")
}
msgs := s.getOutputJSONs()
require.Len(s.T(), msgs, 1, "one log statement should be logged")
assert.Equal(s.T(), msgs[0]["grpc.service"], "mwitkow.testproto.TestService", "all lines must contain service name")
assert.Equal(s.T(), msgs[0]["grpc.method"], "PingList", "all lines must contain method name")
assert.Equal(s.T(), msgs[0]["msg"], "finished client streaming call", "handler's message must contain user message")
assert.Equal(s.T(), msgs[0]["span.kind"], "client", "all lines must contain the kind of call (client)")
assert.Equal(s.T(), msgs[0]["level"], "debug", "OK codes must be logged on debug level.")
assert.Contains(s.T(), msgs[0], "grpc.time_ms", "handler's message must contain time in ms")
}
func (s *zapClientSuite) TestPingError_WithCustomLevels() {
for _, tcase := range []struct {
code codes.Code
level zapcore.Level
msg string
}{
{
code: codes.Internal,
level: zapcore.WarnLevel,
msg: "Internal must remap to ErrorLevel in DefaultClientCodeToLevel",
},
{
code: codes.NotFound,
level: zapcore.DebugLevel,
msg: "NotFound must remap to InfoLevel in DefaultClientCodeToLevel",
},
{
code: codes.FailedPrecondition,
level: zapcore.DebugLevel,
msg: "FailedPrecondition must remap to WarnLevel in DefaultClientCodeToLevel",
},
{
code: codes.Unauthenticated,
level: zapcore.ErrorLevel,
msg: "Unauthenticated is overwritten to ErrorLevel with customClientCodeToLevel override, which probably didn't work",
},
} {
s.SetupTest()
_, err := s.Client.PingError(
s.SimpleCtx(),
&pb_testproto.PingRequest{Value: "something", ErrorCodeReturned: uint32(tcase.code)})
require.Error(s.T(), err, "each call here must return an error")
msgs := s.getOutputJSONs()
require.Len(s.T(), msgs, 1, "only the interceptor log message is printed in PingErr")
assert.Equal(s.T(), msgs[0]["grpc.service"], "mwitkow.testproto.TestService", "all lines must contain service name")
assert.Equal(s.T(), msgs[0]["grpc.method"], "PingError", "all lines must contain method name")
assert.Equal(s.T(), msgs[0]["grpc.code"], tcase.code.String(), "all lines must contain the correct gRPC code")
assert.Equal(s.T(), msgs[0]["level"], tcase.level.String(), tcase.msg)
}
}
func TestZapClientOverrideSuite(t *testing.T) {
if strings.HasPrefix(runtime.Version(), "go1.7") {
t.Skip("Skipping due to json.RawMessage incompatibility with go1.7")
return
}
opts := []grpc_zap.Option{
grpc_zap.WithDurationField(grpc_zap.DurationToDurationField),
}
b := newBaseZapSuite(t)
b.InterceptorTestSuite.ClientOpts = []grpc.DialOption{
grpc.WithUnaryInterceptor(grpc_zap.UnaryClientInterceptor(b.log, opts...)),
grpc.WithStreamInterceptor(grpc_zap.StreamClientInterceptor(b.log, opts...)),
}
suite.Run(t, &zapClientOverrideSuite{b})
}
type zapClientOverrideSuite struct {
*zapBaseSuite
}
func (s *zapClientOverrideSuite) TestPing_HasOverrides() {
_, err := s.Client.Ping(s.SimpleCtx(), goodPing)
require.NoError(s.T(), err, "there must be not be an error on a successful call")
msgs := s.getOutputJSONs()
require.Len(s.T(), msgs, 1, "one log statement should be logged")
assert.Equal(s.T(), msgs[0]["grpc.service"], "mwitkow.testproto.TestService", "all lines must contain service name")
assert.Equal(s.T(), msgs[0]["grpc.method"], "Ping", "all lines must contain method name")
assert.Equal(s.T(), msgs[0]["msg"], "finished client unary call", "handler's message must contain user message")
assert.NotContains(s.T(), msgs[0], "grpc.time_ms", "handler's message must not contain default duration")
assert.Contains(s.T(), msgs[0], "grpc.duration", "handler's message must contain overridden duration")
}
func (s *zapClientOverrideSuite) TestPingList_HasOverrides() {
stream, err := s.Client.PingList(s.SimpleCtx(), goodPing)
require.NoError(s.T(), err, "should not fail on establishing the stream")
for {
_, err := stream.Recv()
if err == io.EOF {
break
}
require.NoError(s.T(), err, "reading stream should not fail")
}
msgs := s.getOutputJSONs()
require.Len(s.T(), msgs, 1, "one log statement should be logged")
assert.Equal(s.T(), msgs[0]["grpc.service"], "mwitkow.testproto.TestService", "all lines must contain service name")
assert.Equal(s.T(), msgs[0]["grpc.method"], "PingList", "all lines must contain method name")
assert.Equal(s.T(), msgs[0]["msg"], "finished client streaming call", "handler's message must contain user message")
assert.Equal(s.T(), msgs[0]["span.kind"], "client", "all lines must contain the kind of call (client)")
assert.Equal(s.T(), msgs[0]["level"], "debug", "must be logged on debug level.")
assert.NotContains(s.T(), msgs[0], "grpc.time_ms", "handler's message must not contain default duration")
assert.Contains(s.T(), msgs[0], "grpc.duration", "handler's message must contain overridden duration")
}