Remove glog dependency

README.md

@@ -211,7 +211,6 @@ With `protoc` (just the grpc-gateway stubs):
 
 ```sh
 protoc -I . --grpc-gateway_out ./gen/go \
-    --grpc-gateway_opt logtostderr=true \
     --grpc-gateway_opt paths=source_relative \
     --grpc-gateway_opt generate_unbound_methods=true \
     your/service/v1/your_service.proto
@@ -300,7 +299,6 @@ Here's what a `protoc` execution might look like:
 
 ```sh
 protoc -I . --grpc-gateway_out ./gen/go \
-    --grpc-gateway_opt logtostderr=true \
     --grpc-gateway_opt paths=source_relative \
     your/service/v1/your_service.proto
 ```
@@ -340,7 +338,6 @@ With `protoc` (just the grpc-gateway stubs):
 
 ```sh
 protoc -I . --grpc-gateway_out ./gen/go \
-    --grpc-gateway_opt logtostderr=true \
     --grpc-gateway_opt paths=source_relative \
     --grpc-gateway_opt grpc_api_configuration=path/to/config.yaml \
     --grpc-gateway_opt standalone=true \
@@ -357,10 +354,10 @@ import (
   "flag"
   "net/http"
 
-  "github.com/golang/glog"
   "github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
   "google.golang.org/grpc"
   "google.golang.org/grpc/credentials/insecure"
+  "google.golang.org/grpc/grpclog"
 
   gw "github.com/yourorg/yourrepo/proto/gen/go/your/service/v1/your_service"  // Update
 )
@@ -391,10 +388,9 @@ func run() error {
 
 func main() {
   flag.Parse()
-  defer glog.Flush()
 
   if err := run(); err != nil {
-    glog.Fatal(err)
+    grpclog.Fatal(err)
   }
 }
 ```
@@ -439,7 +435,6 @@ With `protoc` (just the swagger file):
 
 ```sh
 protoc -I . --openapiv2_out ./gen/openapiv2 \
-    --openapiv2_opt logtostderr=true \
     your/service/v1/your_service.proto
 ```
 
@@ -532,19 +527,15 @@ through `protoc` using one of 2 patterns:
 - as part of the `--<tool_suffix>_out` `protoc` parameter: `--<tool_suffix>_out=<flags>:<path>`
 
 ```sh
---grpc-gateway_out=logtostderr=true,repeated_path_param_separator=ssv:.
---openapiv2_out=logtostderr=true,repeated_path_param_separator=ssv:.
+--grpc-gateway_out=repeated_path_param_separator=ssv:.
+--openapiv2_out=repeated_path_param_separator=ssv:.
 ```
 
 - using additional `--<tool_suffix>_opt` parameters: `--<tool_suffix>_opt=<flag>[,<flag>]*`
 
 ```sh
---grpc-gateway_opt logtostderr=true,repeated_path_param_separator=ssv
-# or separately
---grpc-gateway_opt logtostderr=true --grpc-gateway_opt repeated_path_param_separator=ssv
---openapiv2_opt logtostderr=true,repeated_path_param_separator=ssv
-# or separately
---openapiv2_opt logtostderr=true --openapiv2_opt repeated_path_param_separator=ssv
+--grpc-gateway_opt repeated_path_param_separator=ssv
+--openapiv2_opt repeated_path_param_separator=ssv
 ```
 
 ## More examples

docs/docs/development/installation_for_cygwin.md

@@ -54,7 +54,6 @@ This will probably fail with a similar output to this:
 To fix this you need to run the `go get -u -v` commands and look for all lines starting with `# cd .;`. Copy and paste these lines into your shell and change the clone destination directories.
 
     git clone https://github.com/grpc-ecosystem/grpc-gateway $(cygpath -u $GOPATH)/src/github.com/grpc-ecosystem/grpc-gateway
-    git clone https://github.com/golang/glog $(cygpath -u $GOPATH)/src/github.com/golang/glog
     git clone https://github.com/golang/protobuf $(cygpath -u $GOPATH)/src/github.com/golang/protobuf
     git clone https://github.com/google/go-genproto $(cygpath -u $GOPATH)/src/google.golang.org/genproto
 
@@ -67,8 +66,8 @@ Follow the [instructions](https://github.com/grpc-ecosystem/grpc-gateway#usage)
 Adjust steps 3, 5 and 7 like this. `protoc` expects native Windows paths.
 
     protoc -I. -I$(cygpath -w /usr/local/include) -I${GOPATH}/src --go_out=. --go-grpc_out=. ./path/to/your_service.proto
-    protoc -I. -I$(cygpath -w /usr/local/include) -I${GOPATH}/src --grpc-gateway_out=logtostderr=true:. ./path/to/your_service.proto
-    protoc -I. -I$(cygpath -w /usr/local/include) -I${GOPATH}/src --openapiv2_out=logtostderr=true:. ./path/to/your_service.proto
+    protoc -I. -I$(cygpath -w /usr/local/include) -I${GOPATH}/src ./path/to/your_service.proto
+    protoc -I. -I$(cygpath -w /usr/local/include) -I${GOPATH}/src ./path/to/your_service.proto
 
 Then `cd` into the directory where your entry-point `main.go` file is located and run:
 

docs/docs/mapping/customizing_openapi_output.md

@@ -162,9 +162,8 @@ Example of a bash script with the `use_go_templates` flag set to true:
 ```sh
 $ protoc -I. \
     --go_out . --go-grpc_out . \
-    --grpc-gateway_out . --grpc-gateway_opt logtostderr=true \
+    --grpc-gateway_out . \
     --openapiv2_out . \
-    --openapiv2_opt logtostderr=true \
     --openapiv2_opt use_go_templates=true \
     path/to/my/proto/v1/myproto.proto
 ```

docs/docs/mapping/grpc_api_configuration.md

@@ -94,7 +94,6 @@ It will generate a stub file with path `./gen/go/your/service/v1/your_service.pb
    ```sh
    protoc -I . \
      --grpc-gateway_out ./gen/go \
-     --grpc-gateway_opt logtostderr=true \
      --grpc-gateway_opt paths=source_relative \
      --grpc-gateway_opt grpc_api_configuration=path/to/your_service.yaml \
      your/service/v1/your_service.proto
@@ -107,7 +106,6 @@ It will generate a stub file with path `./gen/go/your/service/v1/your_service.pb
    ```
    protoc -I . \
      --grpc-gateway_out ./gen/go \
-     --grpc-gateway_opt logtostderr=true \
      --grpc-gateway_opt paths=source_relative \
      --grpc-gateway_opt standalone=true \
      --grpc-gateway_opt grpc_api_configuration=path/to/your_service.yaml \

examples/internal/browser/gulpfile.js

@@ -24,17 +24,15 @@ gulp.task('gateway', shell.task([
 ]));
 
 gulp.task('serve-server', ['server'], function () {
-  let server = child.spawn('bin/example-server', [
-    '--logtostderr',
-  ], { stdio: 'inherit' });
+  let server = child.spawn('bin/example-server', [], { stdio: 'inherit' });
   process.on('exit', function () {
     server.kill();
   });
 });
 
 gulp.task('serve-gateway', ['gateway', 'serve-server'], function () {
   let gw = child.spawn('bin/example-gw', [
-    '--logtostderr', '--openapi_dir', path.join(__dirname, "../proto/examplepb"),
+    '--openapi_dir', path.join(__dirname, "../proto/examplepb"),
   ], { stdio: 'inherit' });
   process.on('exit', function () {
     gw.kill();

examples/internal/cmd/example-gateway-server/BUILD.bazel

@@ -7,7 +7,7 @@ go_library(
     visibility = ["//visibility:private"],
     deps = [
         "//examples/internal/gateway",
-        "@com_github_golang_glog//:glog",
+        "@org_golang_google_grpc//grpclog",
     ],
 )
 

examples/internal/cmd/example-gateway-server/main.go

@@ -8,8 +8,8 @@ import (
 	"context"
 	"flag"
 
-	"github.com/golang/glog"
 	"github.com/grpc-ecosystem/grpc-gateway/v2/examples/internal/gateway"
+	"google.golang.org/grpc/grpclog"
 )
 
 var (
@@ -20,7 +20,6 @@ var (
 
 func main() {
 	flag.Parse()
-	defer glog.Flush()
 
 	ctx := context.Background()
 	opts := gateway.Options{
@@ -32,6 +31,6 @@ func main() {
 		OpenAPIDir: *openAPIDir,
 	}
 	if err := gateway.Run(ctx, opts); err != nil {
-		glog.Fatal(err)
+		grpclog.Fatal(err)
 	}
 }

examples/internal/cmd/example-grpc-server/BUILD.bazel

@@ -8,7 +8,7 @@ go_library(
     importpath = "github.com/grpc-ecosystem/grpc-gateway/v2/examples/internal/cmd/example-grpc-server",
     deps = [
         "//examples/internal/server",
-        "@com_github_golang_glog//:glog",
+        "@org_golang_google_grpc//grpclog",
     ],
 )
 

examples/internal/cmd/example-grpc-server/main.go

@@ -8,8 +8,8 @@ import (
 	"context"
 	"flag"
 
-	"github.com/golang/glog"
 	"github.com/grpc-ecosystem/grpc-gateway/v2/examples/internal/server"
+	"google.golang.org/grpc/grpclog"
 )
 
 var (
@@ -19,10 +19,9 @@ var (
 
 func main() {
 	flag.Parse()
-	defer glog.Flush()
 
 	ctx := context.Background()
 	if err := server.Run(ctx, *network, *addr); err != nil {
-		glog.Fatal(err)
+		grpclog.Fatal(err)
 	}
 }

examples/internal/gateway/BUILD.bazel

@@ -14,11 +14,11 @@ go_library(
         "//examples/internal/proto/examplepb",
         "//examples/internal/proto/standalone",
         "//runtime",
-        "@com_github_golang_glog//:glog",
         "@org_golang_google_genproto_googleapis_rpc//errdetails",
         "@org_golang_google_grpc//:go_default_library",
         "@org_golang_google_grpc//connectivity",
         "@org_golang_google_grpc//credentials/insecure",
+        "@org_golang_google_grpc//grpclog",
     ],
 )
 

examples/internal/gateway/handlers.go

@@ -6,21 +6,21 @@ import (
 	"path"
 	"strings"
 
-	"github.com/golang/glog"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/connectivity"
+	"google.golang.org/grpc/grpclog"
 )
 
 // openAPIServer returns OpenAPI specification files located under "/openapiv2/"
 func openAPIServer(dir string) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		if !strings.HasSuffix(r.URL.Path, ".swagger.json") {
-			glog.Errorf("Not Found: %s", r.URL.Path)
+			grpclog.Errorf("Not Found: %s", r.URL.Path)
 			http.NotFound(w, r)
 			return
 		}
 
-		glog.Infof("Serving %s", r.URL.Path)
+		grpclog.Infof("Serving %s", r.URL.Path)
 		p := strings.TrimPrefix(r.URL.Path, "/openapiv2/")
 		p = path.Join(dir, p)
 		http.ServeFile(w, r, p)
@@ -50,7 +50,7 @@ func preflightHandler(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Access-Control-Allow-Headers", strings.Join(headers, ","))
 	methods := []string{"GET", "HEAD", "POST", "PUT", "DELETE"}
 	w.Header().Set("Access-Control-Allow-Methods", strings.Join(methods, ","))
-	glog.Infof("preflight request for %s", r.URL.Path)
+	grpclog.Infof("Preflight request for %s", r.URL.Path)
 }
 
 // healthzServer returns a simple health handler which returns ok.

examples/internal/gateway/main.go

@@ -4,8 +4,8 @@ import (
 	"context"
 	"net/http"
 
-	"github.com/golang/glog"
 	gwruntime "github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
+	"google.golang.org/grpc/grpclog"
 )
 
 // Endpoint describes a gRPC endpoint
@@ -42,7 +42,7 @@ func Run(ctx context.Context, opts Options) error {
 	go func() {
 		<-ctx.Done()
 		if err := conn.Close(); err != nil {
-			glog.Errorf("Failed to close a client connection to the gRPC server: %v", err)
+			grpclog.Errorf("Failed to close a client connection to the gRPC server: %v", err)
 		}
 	}()
 
@@ -62,15 +62,15 @@ func Run(ctx context.Context, opts Options) error {
 	}
 	go func() {
 		<-ctx.Done()
-		glog.Infof("Shutting down the http server")
+		grpclog.Infof("Shutting down the http server")
 		if err := s.Shutdown(context.Background()); err != nil {
-			glog.Errorf("Failed to shutdown http server: %v", err)
+			grpclog.Errorf("Failed to shutdown http server: %v", err)
 		}
 	}()
 
-	glog.Infof("Starting listening at %s", opts.Addr)
+	grpclog.Infof("Starting listening at %s", opts.Addr)
 	if err := s.ListenAndServe(); err != http.ErrServerClosed {
-		glog.Errorf("Failed to listen and serve: %v", err)
+		grpclog.Errorf("Failed to listen and serve: %v", err)
 		return err
 	}
 	return nil

examples/internal/integration/BUILD.bazel

@@ -17,11 +17,11 @@ go_test(
         "//examples/internal/proto/sub",
         "//examples/internal/server",
         "//runtime",
-        "@com_github_golang_glog//:glog",
         "@com_github_google_go_cmp//cmp",
         "@com_github_rogpeppe_fastuuid//:fastuuid",
         "@org_golang_google_genproto_googleapis_rpc//status",
         "@org_golang_google_grpc//codes",
+        "@org_golang_google_grpc//grpclog",
         "@org_golang_google_protobuf//encoding/protojson",
         "@org_golang_google_protobuf//proto",
         "@org_golang_google_protobuf//testing/protocmp",

examples/internal/integration/main_test.go

@@ -9,10 +9,10 @@ import (
 	"testing"
 	"time"
 
-	"github.com/golang/glog"
 	"github.com/grpc-ecosystem/grpc-gateway/v2/examples/internal/gateway"
-	server "github.com/grpc-ecosystem/grpc-gateway/v2/examples/internal/server"
+	"github.com/grpc-ecosystem/grpc-gateway/v2/examples/internal/server"
 	gwruntime "github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
+	"google.golang.org/grpc/grpclog"
 )
 
 var (
@@ -42,7 +42,7 @@ func waitForGateway(ctx context.Context, port uint16) error {
 			return nil
 		}
 
-		glog.Infof("Waiting for localhost:%d to get ready", port)
+		grpclog.Infof("Waiting for localhost:%d to get ready", port)
 		select {
 		case <-ctx.Done():
 			return err
@@ -75,7 +75,6 @@ func runServers(ctx context.Context) <-chan error {
 
 func TestMain(m *testing.M) {
 	flag.Parse()
-	defer glog.Flush()
 
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
@@ -84,7 +83,7 @@ func TestMain(m *testing.M) {
 	ch := make(chan int, 1)
 	go func() {
 		if err := waitForGateway(ctx, 8088); err != nil {
-			glog.Errorf("waitForGateway(ctx, 8088) failed with %v; want success", err)
+			grpclog.Errorf("waitForGateway(ctx, 8088) failed with %v; want success", err)
 		}
 		ch <- m.Run()
 	}()

examples/internal/server/BUILD.bazel

@@ -23,13 +23,13 @@ go_library(
         "//examples/internal/proto/sub",
         "//examples/internal/proto/sub2",
         "//runtime",
-        "@com_github_golang_glog//:glog",
         "@com_github_rogpeppe_fastuuid//:fastuuid",
         "@org_golang_google_genproto_googleapis_api//httpbody",
         "@org_golang_google_genproto_googleapis_rpc//errdetails",
         "@org_golang_google_genproto_googleapis_rpc//status",
         "@org_golang_google_grpc//:go_default_library",
         "@org_golang_google_grpc//codes",
+        "@org_golang_google_grpc//grpclog",
         "@org_golang_google_grpc//metadata",
         "@org_golang_google_grpc//status",
         "@org_golang_google_protobuf//proto",