quickstarts/tutorials/distributed-calculator/go/app.go

50 lines
1.4 KiB
Go

//
// Copyright 2021 The Dapr Authors
// 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 (
"encoding/json"
"fmt"
"log"
"net/http"
"os"
"github.com/gorilla/mux"
)
type Operands struct {
OperandOne float32 `json:"operandOne,string"`
OperandTwo float32 `json:"operandTwo,string"`
}
func add(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
w.Header().Set("Access-Control-Allow-Origin", "*")
var operands Operands
json.NewDecoder(r.Body).Decode(&operands)
fmt.Printf("Adding %f to %f\n", operands.OperandOne, operands.OperandTwo)
json.NewEncoder(w).Encode(operands.OperandOne + operands.OperandTwo)
}
func main() {
appPort := "6000"
if value, ok := os.LookupEnv("APP_PORT"); ok {
appPort = value
}
router := mux.NewRouter()
router.HandleFunc("/add", add).Methods("POST", "OPTIONS")
log.Fatal(http.ListenAndServe(":"+appPort, router))
}