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Add support for grpclog.LoggerV2 (#881)
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gRPC has an updated [logger interface][1] that the v1 API has been
deprecated in favor of.

[1]: https://pkg.go.dev/google.golang.org/grpc/grpclog#LoggerV2

This adds support for it to the existing gRPC adapter in Zap.

Fixes #534 
Closes #538

Co-authored-by: Prashant Varanasi <github@prashantv.com>
Co-authored-by: Abhinav Gupta <abg@uber.com>
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3 people authored Feb 12, 2021
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2 changes: 1 addition & 1 deletion Makefile
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Expand Up @@ -7,7 +7,7 @@ BENCH_FLAGS ?= -cpuprofile=cpu.pprof -memprofile=mem.pprof -benchmem
# Directories containing independent Go modules.
#
# We track coverage only for the main module.
MODULE_DIRS = . ./benchmarks
MODULE_DIRS = . ./benchmarks ./zapgrpc/internal/test

# Many Go tools take file globs or directories as arguments instead of packages.
GO_FILES := $(shell \
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2 changes: 2 additions & 0 deletions zapgrpc/internal/test/README.md
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This submodule exists to test zapgrpc against grpc-go without adding a
dependency on grpc-go to Zap.
11 changes: 11 additions & 0 deletions zapgrpc/internal/test/go.mod
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module go.uber.org/zap/zapgrpc/internal/test

go 1.15

require (
github.com/stretchr/testify v1.5.1
go.uber.org/zap v1.16.0
google.golang.org/grpc v1.35.0
)

replace go.uber.org/zap => ../../..
123 changes: 123 additions & 0 deletions zapgrpc/internal/test/go.sum
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honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.1-2019.2.3 h1:3JgtbtFHMiCmsznwGVTUWbgGov+pVqnlf1dEJTNAXeM=
honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
51 changes: 51 additions & 0 deletions zapgrpc/internal/test/grpc_test.go
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// Copyright (c) 2021 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

package main

import (
"testing"

"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
"go.uber.org/zap/zapgrpc"
"go.uber.org/zap/zaptest/observer"
"google.golang.org/grpc/grpclog"
)

func TestLoggerV2(t *testing.T) {
core, observedLogs := observer.New(zapcore.InfoLevel)
zlog := zap.New(core)

grpclog.SetLoggerV2(zapgrpc.NewLogger(zlog))

grpclog.Info("hello from grpc")

logs := observedLogs.TakeAll()
require.Len(t, logs, 1, "Expected one log entry.")
entry := logs[0]

assert.Equal(t, zapcore.InfoLevel, entry.Level,
"Log entry level did not match.")
assert.Equal(t, "hello from grpc", entry.Message,
"Log entry message did not match.")
}
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