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I am not a lawyer, but according to the appendix of the license, these boilerplate notices should be included with every source file.
60 lines
1.7 KiB
Go
60 lines
1.7 KiB
Go
// Copyright 2015 Light Code Labs, LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package expvar
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import (
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"expvar"
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"fmt"
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"net/http"
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"github.com/mholt/caddy/caddyhttp/httpserver"
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)
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// ExpVar is a simple struct to hold expvar's configuration
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type ExpVar struct {
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Next httpserver.Handler
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Resource Resource
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}
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// ServeHTTP handles requests to expvar's configured entry point with
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// expvar, or passes all other requests up the chain.
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func (e ExpVar) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, error) {
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if httpserver.Path(r.URL.Path).Matches(string(e.Resource)) {
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expvarHandler(w, r)
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return 0, nil
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}
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return e.Next.ServeHTTP(w, r)
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}
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// expvarHandler returns a JSON object will all the published variables.
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//
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// This is lifted straight from the expvar package.
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func expvarHandler(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-Type", "application/json; charset=utf-8")
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fmt.Fprintf(w, "{\n")
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first := true
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expvar.Do(func(kv expvar.KeyValue) {
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if !first {
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fmt.Fprintf(w, ",\n")
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}
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first = false
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fmt.Fprintf(w, "%q: %s", kv.Key, kv.Value)
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})
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fmt.Fprintf(w, "\n}\n")
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}
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// Resource contains the path to the expvar entry point
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type Resource string
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