govanityurls/main.go
Brandon Philips 26a09c434d
Update to use app engine runtime go112 (#34)
* app.yaml: update to go112

Make the required changes to use go112 due to the deprecation of Go 1.9.

Migration doc:
- https://cloud.google.com/appengine/docs/standard/go111/go-differences

References:
- https://github.com/GoogleCloudPlatform/govanityurls/issues/29#issuecomment-506538041
- https://github.com/etcd-io/maintainers/issues/17

* go.mod: initial commit

Migrate this project to use go.mod and update the README.

This is part of the recommended steps to runtime: go111 and beyond.
https://cloud.google.com/appengine/docs/standard/go111/go-differences

* vendor: add dependent packages

Add all dependencies for the project via vendoring for offline builds.

* travis.yml: drop go 1.6 for 1.12

Go 1.6 is too old to have a number of builtin packages for the latest
appengine package. Remove and update to match app engine version: 1.12.

* appengine.go: remove unused file

From the go111 migration doc:
"The appengine build tag is deprecated and will not be used when
building your app for deployment.  Ensure your code still functions
correctly without it being set."

https://cloud.google.com/appengine/docs/standard/go111/go-differences

* main: respect PORT environment variable

The go111 runtime should use the PORT variable to decide the listening
http port.

"PORT The port that receives HTTP requests."
https://cloud.google.com/appengine/docs/standard/go111/runtime
2020-02-06 09:36:34 -08:00

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Go

// Copyright 2017 Google Inc. All Rights Reserved.
//
// 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 main
import (
"io/ioutil"
"log"
"net/http"
"os"
)
func main() {
var configPath string
switch len(os.Args) {
case 1:
configPath = "vanity.yaml"
case 2:
configPath = os.Args[1]
default:
log.Fatal("usage: govanityurls [CONFIG]")
}
vanity, err := ioutil.ReadFile(configPath)
if err != nil {
log.Fatal(err)
}
h, err := newHandler(vanity)
if err != nil {
log.Fatal(err)
}
http.Handle("/", h)
port := os.Getenv("PORT")
if port == "" {
port = "8080"
}
if err := http.ListenAndServe(":"+port, nil); err != nil {
log.Fatal(err)
}
}
func defaultHost(r *http.Request) string {
return r.Host
}