/
main.go
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/
main.go
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// Copyright 2022 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.
package main
import (
"context"
"flag"
"fmt"
"io/ioutil"
"log"
"net/smtp"
secretmanager "cloud.google.com/go/secretmanager/apiv1"
secretmanagerpb "google.golang.org/genproto/googleapis/cloud/secretmanager/v1"
)
var (
subject = flag.String("subject", "", "Email subject.")
receiver = flag.String("receiver", "", "Email receiver.")
bodyFile = flag.String("body_file", "", "Email body content file.")
mimeType = flag.String("mime_type", "text/html", "Mime type of the body.")
)
func main() {
flag.Parse()
log.SetFlags(log.LstdFlags | log.Lshortfile)
// Get the password.
ctx := context.Background()
client, err := secretmanager.NewClient(ctx)
if err != nil {
log.Fatalf("failed to setup client: %v", err)
}
accessRequest := &secretmanagerpb.AccessSecretVersionRequest{
Name: "projects/datcom-ci/secrets/gmailpw/versions/3",
}
result, err := client.AccessSecretVersion(ctx, accessRequest)
if err != nil {
log.Fatalf("failed to access secret version: %v", err)
}
// Sender data.
from := "datacommonsorg@gmail.com"
password := string(result.Payload.Data)
// Receiver email address.
to := []string{
*receiver,
}
// smtp server configuration.
smtpHost := "smtp.gmail.com"
smtpPort := "587"
bodyByte, err := ioutil.ReadFile(*bodyFile)
if err != nil {
log.Fatal(err)
}
subject := fmt.Sprintf("Subject: %s\n", *subject)
mime := fmt.Sprintf("MIME-version: 1.0;\nContent-Type: %s;\n\n", *mimeType)
body := string(bodyByte)
msg := subject + mime + body
// Authentication.
auth := smtp.PlainAuth("", from, password, smtpHost)
// Sending email.
err = smtp.SendMail(smtpHost+":"+smtpPort, auth, from, to, []byte(msg))
if err != nil {
fmt.Println(err)
return
}
fmt.Println("Email Sent Successfully!")
}