goweb/cqrs/command.go

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2020-04-16 16:32:02 +02:00
package cqrs
import (
"context"
"github.com/google/uuid"
)
type CommandID string
type CommandRequest interface {
}
type Command interface {
ID() CommandID
Request() CommandRequest
}
type BaseCommand struct {
id CommandID
req CommandRequest
}
func (c *BaseCommand) ID() CommandID {
return c.id
}
func (c *BaseCommand) Request() CommandRequest {
return c.req
}
func NewBaseCommand(req CommandRequest) *BaseCommand {
id := CommandID(uuid.New().String())
return &BaseCommand{id, req}
}
type CommandResult interface {
Command() Command
}
type BaseCommandResult struct {
cmd Command
}
func (r *BaseCommandResult) Command() Command {
return r.cmd
}
func NewBaseCommandResult(cmd Command) *BaseCommandResult {
return &BaseCommandResult{cmd}
}
type CommandHandlerFunc func(context.Context, Command) error
func (h CommandHandlerFunc) Handle(ctx context.Context, cmd Command) error {
return h(ctx, cmd)
}
type CommandHandler interface {
Handle(context.Context, Command) error
}