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/
template.go
49 lines (41 loc) · 1.62 KB
/
template.go
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// Copyright 2020 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package middleware
import (
"context"
"net/http"
"github.com/google/exposure-notifications-verification-server/pkg/buildinfo"
"github.com/google/exposure-notifications-verification-server/pkg/config"
"github.com/google/exposure-notifications-verification-server/pkg/controller"
"github.com/gorilla/mux"
)
// PopulateTemplateVariables populates the template variables with common
// information and bootstraps the map for more values to be set by other
// middlewares.
func PopulateTemplateVariables(ctx context.Context, config *config.ServerConfig) mux.MiddlewareFunc {
return func(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
m := controller.TemplateMapFromContext(ctx)
m["server"] = config.ServerName
m["title"] = config.ServerName
m["build_id"] = buildinfo.BuildID
m["build_tag"] = buildinfo.BuildTag
// Save the template map on the context.
ctx = controller.WithTemplateMap(ctx, m)
*r = *r.WithContext(ctx)
next.ServeHTTP(w, r)
})
}
}