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delivery_job_processor.go
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delivery_job_processor.go
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package v1
import (
"strings"
"github.com/cloudfoundry-incubator/notifications/db"
"github.com/cloudfoundry-incubator/notifications/gobble"
"github.com/cloudfoundry-incubator/notifications/mail"
"github.com/cloudfoundry-incubator/notifications/postal/common"
"github.com/cloudfoundry-incubator/notifications/uaa"
"github.com/cloudfoundry-incubator/notifications/v1/models"
"github.com/pivotal-golang/lager"
"github.com/rcrowley/go-metrics"
)
type tokenLoader interface {
Load(string) (string, error)
}
type mailSender interface {
Connect(lager.Logger) error
Send(mail.Message, lager.Logger) error
}
type userLoader interface {
Load(userGUIDs []string, token string) (map[string]uaa.User, error)
}
type messageStatusUpdater interface {
Update(conn db.ConnectionInterface, messageID, messageStatus, campaignID string, logger lager.Logger)
}
type deliveryFailureHandler interface {
Handle(job common.Retryable, logger lager.Logger)
}
type kindsFinder interface {
Find(connection models.ConnectionInterface, kindID string, clientID string) (models.Kind, error)
}
type receiptsCreator interface {
CreateReceipts(connection models.ConnectionInterface, userGUIDs []string, clientID string, kindID string) error
}
type unsubscribesGetter interface {
Get(connection models.ConnectionInterface, userGUID string, clientID string, kindID string) (bool, error)
}
type globalUnsubscribesGetter interface {
Get(connection models.ConnectionInterface, userGUID string) (bool, error)
}
type DeliveryJobProcessorConfig struct {
DBTrace bool
UAAHost string
Sender string
Domain string
Packager common.Packager
MailClient mailSender
Database db.DatabaseInterface
TokenLoader tokenLoader
UserLoader userLoader
KindsRepo kindsFinder
ReceiptsRepo receiptsCreator
UnsubscribesRepo unsubscribesGetter
GlobalUnsubscribesRepo globalUnsubscribesGetter
MessageStatusUpdater messageStatusUpdater
DeliveryFailureHandler deliveryFailureHandler
}
type DeliveryJobProcessor struct {
dbTrace bool
uaaHost string
sender string
domain string
packager common.Packager
mailClient mailSender
database db.DatabaseInterface
tokenLoader tokenLoader
userLoader userLoader
kindsRepo kindsFinder
receiptsRepo receiptsCreator
unsubscribesRepo unsubscribesGetter
globalUnsubscribesRepo globalUnsubscribesGetter
messageStatusUpdater messageStatusUpdater
deliveryFailureHandler deliveryFailureHandler
}
func NewDeliveryJobProcessor(config DeliveryJobProcessorConfig) DeliveryJobProcessor {
return DeliveryJobProcessor{
dbTrace: config.DBTrace,
uaaHost: config.UAAHost,
sender: config.Sender,
domain: config.Domain,
packager: config.Packager,
mailClient: config.MailClient,
database: config.Database,
tokenLoader: config.TokenLoader,
userLoader: config.UserLoader,
kindsRepo: config.KindsRepo,
receiptsRepo: config.ReceiptsRepo,
unsubscribesRepo: config.UnsubscribesRepo,
globalUnsubscribesRepo: config.GlobalUnsubscribesRepo,
messageStatusUpdater: config.MessageStatusUpdater,
deliveryFailureHandler: config.DeliveryFailureHandler,
}
}
func (p DeliveryJobProcessor) Process(job *gobble.Job, logger lager.Logger) error {
var delivery common.Delivery
err := job.Unmarshal(&delivery)
if err != nil {
metrics.GetOrRegisterCounter("notifications.worker.panic.json", nil).Inc(1)
p.deliveryFailureHandler.Handle(job, logger)
return nil
}
logger = logger.WithData(lager.Data{
"message_id": delivery.MessageID,
"vcap_request_id": delivery.VCAPRequestID,
})
if p.dbTrace {
p.database.TraceOn("", gorpCompatibleLogger{logger})
}
err = p.receiptsRepo.CreateReceipts(p.database.Connection(), []string{delivery.UserGUID}, delivery.ClientID, delivery.Options.KindID)
if err != nil {
p.deliveryFailureHandler.Handle(job, logger)
return nil
}
if delivery.Email == "" {
var token string
token, err = p.tokenLoader.Load(p.uaaHost)
if err != nil {
p.deliveryFailureHandler.Handle(job, logger)
return nil
}
users, err := p.userLoader.Load([]string{delivery.UserGUID}, token)
if err != nil || len(users) < 1 {
p.deliveryFailureHandler.Handle(job, logger)
return nil
}
emails := users[delivery.UserGUID].Emails
if len(emails) > 0 {
delivery.Email = emails[0]
}
}
logger = logger.WithData(lager.Data{
"recipient": delivery.Email,
})
if p.shouldDeliver(delivery, logger) {
status := p.process(delivery, logger)
if status != common.StatusDelivered {
p.deliveryFailureHandler.Handle(job, logger)
return nil
} else {
metrics.GetOrRegisterCounter("notifications.worker.delivered", nil).Inc(1)
}
} else {
metrics.GetOrRegisterCounter("notifications.worker.unsubscribed", nil).Inc(1)
}
return nil
}
func (p DeliveryJobProcessor) process(delivery common.Delivery, logger lager.Logger) string {
context, err := p.packager.PrepareContext(delivery, p.sender, p.domain)
if err != nil {
panic(err)
}
message, err := p.packager.Pack(context)
if err != nil {
logger.Info("template-pack-failed")
p.messageStatusUpdater.Update(p.database.Connection(), delivery.MessageID, common.StatusFailed, "", logger)
return common.StatusFailed
}
status := p.sendMail(delivery.MessageID, message, logger)
p.messageStatusUpdater.Update(p.database.Connection(), delivery.MessageID, status, "", logger)
return status
}
func (p DeliveryJobProcessor) shouldDeliver(delivery common.Delivery, logger lager.Logger) bool {
conn := p.database.Connection()
if p.isCritical(conn, delivery.Options.KindID, delivery.ClientID) {
return true
}
globallyUnsubscribed, err := p.globalUnsubscribesRepo.Get(conn, delivery.UserGUID)
if err != nil || globallyUnsubscribed {
logger.Info("user-unsubscribed")
p.messageStatusUpdater.Update(p.database.Connection(), delivery.MessageID, common.StatusUndeliverable, "", logger)
return false
}
isUnsubscribed, err := p.unsubscribesRepo.Get(conn, delivery.UserGUID, delivery.ClientID, delivery.Options.KindID)
if err != nil || isUnsubscribed {
logger.Info("user-unsubscribed")
p.messageStatusUpdater.Update(p.database.Connection(), delivery.MessageID, common.StatusUndeliverable, "", logger)
return false
}
if delivery.Email == "" {
logger.Info("no-email-address-for-user")
p.messageStatusUpdater.Update(p.database.Connection(), delivery.MessageID, common.StatusUndeliverable, "", logger)
return false
}
if !strings.Contains(delivery.Email, "@") {
logger.Info("malformatted-email-address")
p.messageStatusUpdater.Update(p.database.Connection(), delivery.MessageID, common.StatusUndeliverable, "", logger)
return false
}
return true
}
func (p DeliveryJobProcessor) sendMail(messageID string, message mail.Message, logger lager.Logger) string {
err := p.mailClient.Connect(logger)
if err != nil {
logger.Error("smtp-connection-error", err)
return common.StatusFailed
}
logger.Info("delivery-start")
err = p.mailClient.Send(message, logger)
if err != nil {
logger.Error("delivery-failed-smtp-error", err)
return common.StatusFailed
}
logger.Info("message-sent")
return common.StatusDelivered
}
func (p DeliveryJobProcessor) isCritical(conn db.ConnectionInterface, kindID, clientID string) bool {
kind, err := p.kindsRepo.Find(conn, kindID, clientID)
if _, ok := err.(models.NotFoundError); ok {
return false
}
return kind.Critical
}