go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/casviewer/errors.go (about)

     1  // Copyright 2020 The LUCI Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package casviewer
    16  
    17  import (
    18  	"context"
    19  	"net/http"
    20  
    21  	"go.chromium.org/luci/common/errors"
    22  	"go.chromium.org/luci/grpc/grpcutil"
    23  	"go.chromium.org/luci/server/templates"
    24  )
    25  
    26  // renderErrorPage renders an appropriate error page.
    27  func renderErrorPage(ctx context.Context, w http.ResponseWriter, err error) {
    28  	errors.Log(ctx, err)
    29  	grpcCode := grpcutil.Code(err)
    30  	statusCode := grpcutil.CodeStatus(grpcCode)
    31  	w.WriteHeader(statusCode)
    32  	templates.MustRender(ctx, w, "pages/error.html", templates.Args{
    33  		"StatusCode":    statusCode,
    34  		"StatusMessage": grpcCode.String(),
    35  		"ErrorMessage":  err.Error(),
    36  	})
    37  }