Comments (1)
Yes, this feature is a useful suggestion.
Right now in Commanded, the command-to-aggregate identity mapping is handled by your router module. You specify the identity
option for each command:
defmodule BankRouter do
use Commanded.Commands.Router
dispatch OpenAccount, to: BankAccount, identity: :account_number
end
Therefore we could use this as the extension point.
Router identity prefix
-
Include another option to specify the identity prefix:
defmodule BankRouter do use Commanded.Commands.Router dispatch [OpenAccount,DepositMoney,WithdrawMoney] to: BankAccount, identity: :account_number, identity_prefix: "bank-account-" end
-
Allow a function to be used as the
identity
option, it could then construct the identity as required from the command being dispatched:defmodule BankRouter do use Commanded.Commands.Router dispatch [RegisterUser] to: User, identity: fn %{uuid: uuid} -> "user-#{uuid}" end dispatch [OpenAccount,DepositMoney,WithdrawMoney] to: BankAccount, identity: &BankRouter.account_identity/1 def account_identity(%{account_number: account_number}), do: "bank-account-#{account_number}" end
-
Allow an aggregate identity to be specified for all its commands, providing an optional prefix:
defmodule BankRouter do use Commanded.Commands.Router identify BankAccount, by: :account_number, prefix: "bank-account-" dispatch [OpenAccount,DepositMoney,WithdrawMoney] to: BankAccount end
from commanded.
Related Issues (20)
- how to migrate or modify events HOT 2
- Update sponsors in BACKERS and README HOT 1
- General design philosophy question: sending email from process manager HOT 4
- update FAQ regarding scheduling HOT 1
- Wiki Testing section is outdated HOT 1
- warning: redefining module Commanded.Serialization.JsonDecoder.Any HOT 2
- Event number gaplessness required?
- Commanded.aggregate_state does not work when aggregate identity has a prefix HOT 10
- Process manager router option not working
- Lessons learned from performance optimization - an unlikely culprit HOT 3
- no function clause matching in Commanded.Commands.Dispatcher.telemetry_stop/3 HOT 1
- Docs questions
- Stacktrace in event handler error? HOT 2
- Paralelization Strategies in EventHandlers
- Should Commanded.Event.Handler support messages from swarm? HOT 2
- Event retention policies?
- please support multiple commanded application with one eventstore HOT 6
- Process Manager state serialization breaks when using a custom TypeProvider with the JsonSerializer
- `Commanded.ProcessManagers.ProcessManager.identity/0` function returns `nil` in unit tests
- no function clause matching in Commanded.Event.Handler.partition_event/4 HOT 1
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from commanded.