MailWorker

This project is about taking mail informations over HTTP protocol in json format and send them to the target email addresses in order with their priority or time tag.

How to use ?

At this current version, only thing you need to do is get in the project directory and give that command at the console
go run *.go.
Then the program will be started to listening incoming POST requests.

Different types of configuration settings can be set under config.txt file. Current http listening port is 9000. Sample json format is given at the mail_ornekleri.txt. In this format, it's possible to send multiple email contents within the one json packet. To use sample POST request sender and see if it works, get in the includes subfolder and call it with url arg
Example request sender use: go run send_post_request.go http://localhost:9000/post

Notes:

• Make sure RabbitMQ server is up and config.txt file is under ./includes/ directory.
• Dont use whitespace while editing config file. (Correct: option=value , Wrong: option = value )
• Current json format sat for Sendgrid api. (simple example is right below.)
• Program is not sending mails to targets, just showing at the logs. If you want to send or add a new driver, check out StartConsume function from queue_consumer.go file and add whatever action you want.
• [Sendgrid v3 api referance] (https://sendgrid.com/docs/API_Reference/Web_API_v3/Mail/index.html)

Sendgrid mail sender sample:

  
  import (
  	"fmt"
  	"github.com/sendgrid/sendgrid-go"
  	"log"
  )
  
  func main() {
  	request := sendgrid.GetRequest("SENDGRID-API-KEY-HERE", "/v3/mail/send", "https://api.sendgrid.com")
  	request.Method = "POST"
  	request.Body = []byte(
  `{
    "personalizations": [
      {
        "to": [
          {
            "email": "example1@gmail.com"
          }
        ],
        "subject": "Sending with SendGrid is Fun"
      }
    ],
    "from": {
      "email": "cengizucgul@hotmail.com",
      "name":"Cengiz Üçgül"
    },
    "content": [
      {
        "type": "text/plain",
        "value": "and easy to do anywhere, even with Go"
      }
    ],
    "reply_to": {
      "name":"Cengiz",
      "email":"cengizucgul07@gmail.com"
    },
    "attachments": [
      {
        "content": "c2FtcGxlIHRleHQgc3RyaW5ncy4uLg==",  // Base64 format
        "filename": "some-attachment.txt",
        "type": "plain/text",
        "disposition": "attachment",
        "contentId": "mytext"
      }
    ]
  }`)
  	response, err := sendgrid.API(request)
  	if err != nil {
  		log.Println(err)
  	} else {
  		fmt.Println(response.StatusCode)
  		fmt.Println(response.Body)
  		fmt.Println(response.Headers)
  	}
  }