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Merge pull request #1 from joeirimpan/aws-ses
feat: AWS SES messenger
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,131 @@ | ||
| package messenger | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
|
|
||
| "github.com/aws/aws-sdk-go/aws" | ||
| "github.com/aws/aws-sdk-go/aws/credentials" | ||
| "github.com/aws/aws-sdk-go/aws/session" | ||
| "github.com/aws/aws-sdk-go/service/ses" | ||
| "github.com/francoispqt/onelog" | ||
| "github.com/knadh/smtppool" | ||
| ) | ||
|
|
||
| const ( | ||
| ContentTypeHTML = "html" | ||
| ContentTypePlain = "plain" | ||
| ) | ||
|
|
||
| type sesCfg struct { | ||
| AccessKey string `json:"access_key"` | ||
| SecretKey string `json:"secret_key"` | ||
| Region string `json:"region"` | ||
| Log bool `json:"log"` | ||
| } | ||
|
|
||
| type sesMessenger struct { | ||
| cfg sesCfg | ||
| client *ses.SES | ||
|
|
||
| logger *onelog.Logger | ||
| } | ||
|
|
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| func (s sesMessenger) Name() string { | ||
| return "ses" | ||
| } | ||
|
|
||
| // Push sends the sms through pinpoint API. | ||
| func (s sesMessenger) Push(msg Message) error { | ||
| // convert attachments to smtppool.Attachments | ||
| var files []smtppool.Attachment | ||
| if msg.Attachments != nil { | ||
| files = make([]smtppool.Attachment, 0, len(msg.Attachments)) | ||
| for i := 0; i < len(msg.Attachments); i++ { | ||
| files[i] = smtppool.Attachment{ | ||
| Filename: msg.Attachments[i].Name, | ||
| Header: msg.Attachments[i].Header, | ||
| Content: make([]byte, len(msg.Attachments[i].Content)), | ||
| } | ||
| copy(files[i].Content, msg.Attachments[i].Content) | ||
| } | ||
| } | ||
|
|
||
| email := smtppool.Email{ | ||
| From: msg.Campaign.FromEmail, | ||
| Subject: msg.Subject, | ||
| Sender: msg.From, | ||
| Headers: msg.Headers, | ||
| Attachments: files, | ||
| } | ||
|
|
||
| switch { | ||
| case msg.ContentType == ContentTypePlain: | ||
| email.Text = msg.Body | ||
| default: | ||
| email.HTML = msg.Body | ||
| } | ||
|
|
||
| emailB, err := email.Bytes() | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| input := &ses.SendRawEmailInput{ | ||
| Source: &email.From, | ||
| Destinations: []*string{&msg.Subscriber.Email}, | ||
| RawMessage: &ses.RawMessage{ | ||
| Data: emailB, | ||
| }, | ||
| } | ||
|
|
||
| out, err := s.client.SendRawEmail(input) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if s.cfg.Log { | ||
| s.logger.InfoWith("successfully sent email").String("email", msg.Subscriber.Email).String("results", fmt.Sprintf("%#+v", out)).Write() | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func (s sesMessenger) Flush() error { | ||
| return nil | ||
| } | ||
|
|
||
| func (s sesMessenger) Close() error { | ||
| return nil | ||
| } | ||
|
|
||
| // NewAWSSES creates new instance of pinpoint | ||
| func NewAWSSES(cfg []byte, l *onelog.Logger) (Messenger, error) { | ||
| var c sesCfg | ||
| if err := json.Unmarshal(cfg, &c); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| if c.Region == "" { | ||
| return nil, fmt.Errorf("invalid region") | ||
| } | ||
| if c.AccessKey == "" { | ||
| return nil, fmt.Errorf("invalid access_key") | ||
| } | ||
| if c.SecretKey == "" { | ||
| return nil, fmt.Errorf("invalid secret_key") | ||
| } | ||
|
|
||
| sess := session.Must(session.NewSession()) | ||
| svc := ses.New(sess, | ||
| aws.NewConfig(). | ||
| WithCredentials(credentials.NewStaticCredentials(c.AccessKey, c.SecretKey, "")). | ||
| WithRegion(c.Region), | ||
| ) | ||
|
|
||
| return sesMessenger{ | ||
| client: svc, | ||
| cfg: c, | ||
| logger: l, | ||
| }, nil | ||
| } |