func main() {
Black := "Black"
Red := "Red"
Green := "Green"
Brown := "Brown"
Blue := "Blue"
Magenta := "Magenta"
Cyan := "Cyan"
Gray := "Gray"
BgBlack := "BgBlack"
BgRed := "BgRed"
BgGreen := "BgGreen"
BgBrown := "BgBrown"
BgBlue := "BgBlue"
BgMagenta := "BgMagenta"
BgCyan := "BgCyan"
BgGray := "BgGray"
Bold := "Bold"
Reverse := "Reverse"
fmt.Println(glr.Black(Black))
fmt.Println(glr.Red(Red))
fmt.Println(glr.Green(Green))
fmt.Println(glr.Brown(Brown))
fmt.Println(glr.Blue(Blue))
fmt.Println(glr.Magenta(Magenta))
fmt.Println(glr.Cyan(Cyan))
fmt.Println(glr.Gray(Gray))
fmt.Println(glr.BgBlack(BgBlack))
fmt.Println(glr.BgRed(BgRed))
fmt.Println(glr.BgGreen(BgGreen))
fmt.Println(glr.BgBrown(BgBrown))
fmt.Println(glr.BgBlue(BgBlue))
fmt.Println(glr.BgMagenta(BgMagenta))
fmt.Println(glr.BgCyan(BgCyan))
fmt.Println(glr.BgGray(BgGray))
fmt.Println(glr.Bold(Bold))
fmt.Println(glr.Reverse(Reverse))
fmt.Println(glr.Blue(glr.BgGreen("Blue and BgGreen")))
fmt.Println(glr.Clear(glr.Blue(glr.BgGreen("Cleared: Blue and BgGreen"))))
}
func RunScenario(t *testing.T, persistance cqrs.EventStreamRepository) {
typeRegistry := cqrs.NewTypeRegistry()
bus := rabbit.NewEventBus("amqp://*****:*****@localhost:5672/", "example_test", "testing.example")
repository := cqrs.NewRepositoryWithPublisher(persistance, bus, typeRegistry)
repository.GetTypeRegistry().RegisterAggregate(&Account{})
repository.GetTypeRegistry().RegisterEvents(AccountCreatedEvent{}, EmailAddressChangedEvent{}, AccountCreditedEvent{}, AccountDebitedEvent{}, PasswordChangedEvent{})
accountID := "5058e029-d329-4c4b-b111-b042e48b0c5f"
readModel := NewReadModelAccounts()
usersModel := NewUsersModel()
eventDispatcher := cqrs.NewVersionedEventDispatchManager(bus, typeRegistry)
eventDispatcher.RegisterEventHandler(AccountCreatedEvent{}, func(event cqrs.VersionedEvent) error {
readModel.UpdateViewModel([]cqrs.VersionedEvent{event})
usersModel.UpdateViewModel([]cqrs.VersionedEvent{event})
return nil
})
eventDispatcher.RegisterEventHandler(AccountCreditedEvent{}, func(event cqrs.VersionedEvent) error {
readModel.UpdateViewModel([]cqrs.VersionedEvent{event})
return nil
})
eventDispatcher.RegisterEventHandler(AccountDebitedEvent{}, func(event cqrs.VersionedEvent) error {
readModel.UpdateViewModel([]cqrs.VersionedEvent{event})
return nil
})
eventDispatcher.RegisterEventHandler(EmailAddressChangedEvent{}, func(event cqrs.VersionedEvent) error {
readModel.UpdateViewModel([]cqrs.VersionedEvent{event})
usersModel.UpdateViewModel([]cqrs.VersionedEvent{event})
return nil
})
eventDispatcher.RegisterEventHandler(PasswordChangedEvent{}, func(event cqrs.VersionedEvent) error {
usersModel.UpdateViewModel([]cqrs.VersionedEvent{event})
return nil
})
stopChannel := make(chan bool)
go eventDispatcher.Listen(stopChannel)
testCorrelationID := uuid.New()
readModel.LoadAccounts(persistance)
usersModel.LoadUsers(persistance)
log.Println("Loaded accounts")
log.Println(readModel)
log.Println("Loaded Users")
log.Println(usersModel)
log.Println("Create or find an account")
readModelAccount := readModel.Accounts[accountID]
log.Println(readModelAccount)
log.Println("Create or find a user")
user := usersModel.Users[accountID]
log.Println(user)
var account *Account
if readModelAccount == nil {
log.Println("Get hash for user...")
hashedPassword, err := GetHashForPassword("$ThisIsMyPassword1")
if err != nil {
t.Fatal("Error: ", err)
}
log.Println("Get hash for user...")
log.Println("Create new account...")
account = NewAccount("John", "Snow", "*****@*****.**", hashedPassword, 0.0)
log.Println("Set ID...")
account.SetID(accountID)
log.Println(account)
} else {
account, _ = NewAccountFromHistory(accountID, repository)
}
log.Println(account)
log.Println(readModel)
log.Println(usersModel)
account.ChangePassword("$ThisIsANOTHERPassword")
if !account.CheckPassword("$ThisIsANOTHERPassword") {
t.Fatal("Password is incorrect for account")
}
log.Println("Change email address and credit the account")
account.ChangeEmailAddress("*****@*****.**")
account.Credit(50)
account.Credit(50)
log.Println(account)
log.Println(readModel)
log.Println("Persist the account")
repository.Save(account, "")
log.Println(readModel)
log.Println(usersModel)
log.Println("Load the account from history")
account, error := NewAccountFromHistory(accountID, repository)
if error != nil {
t.Fatal(error)
}
log.Println(account)
log.Println(readModel)
log.Println("Change the email address, credit 150, debit 200")
lastEmailAddress := "*****@*****.**"
account.ChangeEmailAddress(lastEmailAddress)
account.Credit(150)
account.Debit(200)
log.Println(account)
log.Println(readModel)
log.Println("Persist the account")
repository.Save(account, testCorrelationID)
log.Println(readModel)
log.Println(usersModel)
log.Println("Load the account from history")
account, error = NewAccountFromHistory(accountID, repository)
if error != nil {
t.Fatal(error)
}
time.Sleep(100 * time.Millisecond)
// All events should have been replayed and the email address should be the latest
log.Println(account)
log.Println(readModel)
// log.Println(usersModel)
if account.EmailAddress != lastEmailAddress {
t.Fatal("Expected emailaddress to be ", lastEmailAddress)
}
log.Println("Stop channel")
stopChannel <- true
log.Println("GetIntegrationEventsByCorrelationID")
correlationEvents, err := persistance.GetIntegrationEventsByCorrelationID(testCorrelationID)
if err != nil {
t.Fatal(err)
}
if len(correlationEvents) == 0 {
t.Fatal("Expected correlation events")
}
for _, correlationEvent := range correlationEvents {
log.Println(glr.Green(fmt.Sprintf("%v", correlationEvent.Event)))
}
}
func RegisterCommandHandlers(commandDispatcher *cqrs.CommandDispatchManager, repository cqrs.EventSourcingRepository) {
commandDispatcher.RegisterCommandHandler(CreateAccountCommand{}, func(command cqrs.Command) error {
createAccountCommand := command.Body.(CreateAccountCommand)
log.Println(glr.Green("Processing command - Create account"))
account := NewAccount(createAccountCommand.FirstName,
createAccountCommand.LastName,
createAccountCommand.EmailAddress,
createAccountCommand.PasswordHash,
createAccountCommand.InitialBalance)
log.Println(glr.Green("Set ID..."))
account.SetID(accountID)
log.Println(account)
log.Println(glr.Green("Persist the account"))
repository.Save(account, command.CorrelationID)
log.Println(glr.Green(account.String()))
return nil
})
commandDispatcher.RegisterCommandHandler(ChangeEmailAddressCommand{}, func(command cqrs.Command) error {
changeEmailAddressCommand := command.Body.(ChangeEmailAddressCommand)
log.Println(glr.Green("Processing command - Change email address"))
account, err := NewAccountFromHistory(changeEmailAddressCommand.AccountID, repository)
if err != nil {
return err
}
account.ChangeEmailAddress(changeEmailAddressCommand.NewEmailAddress)
log.Println(glr.Green("Persist the account"))
repository.Save(account, command.CorrelationID)
log.Println(glr.Green(account.String()))
return nil
})
commandDispatcher.RegisterCommandHandler(ChangePasswordCommand{}, func(command cqrs.Command) error {
changePasswordCommand := command.Body.(ChangePasswordCommand)
log.Println(glr.Green("Processing command - Change password"))
account, err := NewAccountFromHistory(changePasswordCommand.AccountID, repository)
if err != nil {
return err
}
account.ChangePassword(changePasswordCommand.NewPassword)
log.Println(glr.Green("Persist the account"))
repository.Save(account, command.CorrelationID)
log.Println(glr.Green(account.String()))
return nil
})
commandDispatcher.RegisterCommandHandler(CreditAccountCommand{}, func(command cqrs.Command) error {
creditAccountCommand := command.Body.(CreditAccountCommand)
log.Println(glr.Green("Processing command - Credit account"))
account, err := NewAccountFromHistory(creditAccountCommand.AccountID, repository)
if err != nil {
return err
}
account.Credit(creditAccountCommand.Amount)
log.Println(glr.Green("Persist the account"))
repository.Save(account, command.CorrelationID)
log.Println(glr.Green(account.String()))
return nil
})
commandDispatcher.RegisterCommandHandler(DebitAccountCommand{}, func(command cqrs.Command) error {
debitAccountCommand := command.Body.(DebitAccountCommand)
log.Println(glr.Green("Processing command - Debit account"))
account, err := NewAccountFromHistory(debitAccountCommand.AccountID, repository)
if err != nil {
return err
}
if err := account.Debit(debitAccountCommand.Amount); err != nil {
return err
}
log.Println(glr.Green("Persist the account"))
repository.Save(account, command.CorrelationID)
log.Println(glr.Green(account.String()))
return nil
})
}
func TestGreen(t *testing.T) {
r := "\033[32mGreen\033[0m"
if s := glr.Green("Green"); s != r {
t.Error("Expected '", r, "', got '", s, "'")
}
}
func ExampleGreen() {
fmt.Println(glr.Green("Green"))
// Output:
// [32mGreen[0m
}