Broadcast deliveries into msghub for #44

inbucket.go

@@ -14,6 +14,7 @@ import (
 	"github.com/jhillyerd/inbucket/config"
 	"github.com/jhillyerd/inbucket/httpd"
 	"github.com/jhillyerd/inbucket/log"
+	"github.com/jhillyerd/inbucket/msghub"
 	"github.com/jhillyerd/inbucket/pop3d"
 	"github.com/jhillyerd/inbucket/rest"
 	"github.com/jhillyerd/inbucket/smtpd"
@@ -95,6 +96,9 @@ func main() {
 		}
 	}
 
+	// Create message hub
+	msgHub := msghub.New(rootCtx, 100)
+
 	// Grab our datastore
 	ds := smtpd.DefaultFileDataStore()
 
@@ -110,7 +114,7 @@ func main() {
 	go pop3Server.Start(rootCtx)
 
 	// Startup SMTP server
-	smtpServer = smtpd.NewServer(config.GetSMTPConfig(), ds, shutdownChan)
+	smtpServer = smtpd.NewServer(config.GetSMTPConfig(), shutdownChan, ds, msgHub)
 	go smtpServer.Start(rootCtx)
 
 	// Loop forever waiting for signals or shutdown channel

rest/testmocks_test.go

@@ -50,6 +50,11 @@ func (m *MockMailbox) NewMessage() (smtpd.Message, error) {
 	return args.Get(0).(smtpd.Message), args.Error(1)
 }
 
+func (m *MockMailbox) Name() string {
+	args := m.Called()
+	return args.String(0)
+}
+
 func (m *MockMailbox) String() string {
 	args := m.Called()
 	return args.String(0)

smtpd/datastore.go

@@ -29,6 +29,7 @@ type Mailbox interface {
 	GetMessage(id string) (Message, error)
 	Purge() error
 	NewMessage() (Message, error)
+	Name() string
 	String() string
 }
 

smtpd/filestore.go

@@ -148,6 +148,10 @@ type FileMailbox struct {
 	messages    []*FileMessage
 }
 
+func (mb *FileMailbox) Name() string {
+	return mb.name
+}
+
 func (mb *FileMailbox) String() string {
 	return mb.name + "[" + mb.dirName + "]"
 }

smtpd/handler.go

@@ -13,6 +13,7 @@ import (
 	"time"
 
 	"github.com/jhillyerd/inbucket/log"
+	"github.com/jhillyerd/inbucket/msghub"
 )
 
 // State tracks the current mode of our SMTP state machine
@@ -464,6 +465,18 @@ func (ss *Session) deliverMessage(r recipientDetails, msgBuf [][]byte) (ok bool)
 		return false
 	}
 
+	// Broadcast message information
+	broadcast := msghub.Message{
+		Mailbox: r.mailbox.Name(),
+		ID:      msg.ID(),
+		From:    msg.From(),
+		To:      msg.To(),
+		Subject: msg.Subject(),
+		Date:    msg.Date(),
+		Size:    msg.Size(),
+	}
+	ss.server.msgHub.Broadcast(broadcast)
+
 	return true
 }
 

smtpd/handler_test.go

@@ -5,13 +5,15 @@ import (
 	"fmt"
 	"io"
 
-	"github.com/jhillyerd/inbucket/config"
 	"log"
 	"net"
 	"net/textproto"
 	"os"
 	"testing"
 	"time"
+
+	"github.com/jhillyerd/inbucket/config"
+	"github.com/jhillyerd/inbucket/msghub"
 )
 
 type scriptStep struct {
@@ -153,6 +155,13 @@ func TestMailState(t *testing.T) {
 	msg1 := &MockMessage{}
 	mds.On("MailboxFor").Return(mb1, nil)
 	mb1.On("NewMessage").Return(msg1, nil)
+	mb1.On("Name").Return("u1")
+	msg1.On("ID").Return("")
+	msg1.On("From").Return("")
+	msg1.On("To").Return(make([]string, 0))
+	msg1.On("Date").Return(time.Time{})
+	msg1.On("Subject").Return("")
+	msg1.On("Size").Return(0)
 	msg1.On("Close").Return(nil)
 
 	server, logbuf := setupSMTPServer(mds)
@@ -263,6 +272,13 @@ func TestDataState(t *testing.T) {
 	msg1 := &MockMessage{}
 	mds.On("MailboxFor").Return(mb1, nil)
 	mb1.On("NewMessage").Return(msg1, nil)
+	mb1.On("Name").Return("u1")
+	msg1.On("ID").Return("")
+	msg1.On("From").Return("")
+	msg1.On("To").Return(make([]string, 0))
+	msg1.On("Date").Return(time.Time{})
+	msg1.On("Subject").Return("")
+	msg1.On("Size").Return(0)
 	msg1.On("Close").Return(nil)
 
 	server, logbuf := setupSMTPServer(mds)
@@ -378,7 +394,7 @@ func setupSMTPServer(ds DataStore) (*Server, *bytes.Buffer) {
 
 	// Create a server, don't start it
 	shutdownChan := make(chan bool)
-	return NewServer(cfg, ds, shutdownChan), buf
+	return NewServer(cfg, shutdownChan, ds, &msghub.Hub{}), buf
 }
 
 var sessionNum int

smtpd/listener.go

@@ -12,24 +12,27 @@ import (
 
 	"github.com/jhillyerd/inbucket/config"
 	"github.com/jhillyerd/inbucket/log"
+	"github.com/jhillyerd/inbucket/msghub"
 )
 
 // Server holds the configuration and state of our SMTP server
 type Server struct {
+	// Configuration
 	domain          string
 	domainNoStore   string
 	maxRecips       int
 	maxIdleSeconds  int
 	maxMessageBytes int
-	dataStore       DataStore
 	storeMessages   bool
-	listener        net.Listener
 
-	// globalShutdown is the signal Inbucket needs to shut down
+	// Dependencies
-	globalShutdown chan bool
+	dataStore      DataStore   // Mailbox/message store
+	globalShutdown chan bool   // Shuts down Inbucket
+	msgHub         *msghub.Hub // Pub/sub for message info
 
-	// waitgroup tracks individual sessions
+	// State
-	waitgroup *sync.WaitGroup
+	listener  net.Listener    // Incoming network connections
+	waitgroup *sync.WaitGroup // Waitgroup tracks individual sessions
 }
 
 var (
@@ -54,17 +57,22 @@ var (
 )
 
 // NewServer creates a new Server instance with the specificed config
-func NewServer(cfg config.SMTPConfig, ds DataStore, globalShutdown chan bool) *Server {
+func NewServer(
+	cfg config.SMTPConfig,
+	globalShutdown chan bool,
+	ds DataStore,
+	msgHub *msghub.Hub) *Server {
 	return &Server{
-		dataStore:       ds,
 		domain:          cfg.Domain,
+		domainNoStore:   strings.ToLower(cfg.DomainNoStore),
 		maxRecips:       cfg.MaxRecipients,
 		maxIdleSeconds:  cfg.MaxIdleSeconds,
 		maxMessageBytes: cfg.MaxMessageBytes,
 		storeMessages:   cfg.StoreMessages,
-		domainNoStore:   strings.ToLower(cfg.DomainNoStore),
-		waitgroup:       new(sync.WaitGroup),
 		globalShutdown:  globalShutdown,
+		dataStore:       ds,
+		msgHub:          msgHub,
+		waitgroup:       new(sync.WaitGroup),
 	}
 }
 

smtpd/retention_test.go

@@ -106,6 +106,11 @@ func (m *MockMailbox) NewMessage() (Message, error) {
 	return args.Get(0).(Message), args.Error(1)
 }
 
+func (m *MockMailbox) Name() string {
+	args := m.Called()
+	return args.String(0)
+}
+
 func (m *MockMailbox) String() string {
 	args := m.Called()
 	return args.String(0)