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// Copyright 2019 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
//
// https://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.
// [START functions_helloworld_http]
// Package helloworld provides a set of Cloud Functions samples.
package helloworld
import (
"encoding/json"
"fmt"
"html"
"net/http"
)
// HelloHTTP is an HTTP Cloud Function with a request parameter.
func HelloHTTP(w http.ResponseWriter, r *http.Request) {
var d struct {
Name string `json:"name"`
}
if err := json.NewDecoder(r.Body).Decode(&d); err != nil {
fmt.Fprint(w, "Hello, World!")
return
}
if d.Name == "" {
fmt.Fprint(w, "Hello, World!")
return
}
fmt.Fprintf(w, "Hello, %s!", html.EscapeString(d.Name))
}
// [END functions_helloworld_http]
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