ussd/internal/handlers/single.go

58 lines
1.5 KiB
Go

package handlers
import (
"context"
"errors"
"io"
"git.defalsify.org/vise.git/engine"
"git.defalsify.org/vise.git/resource"
"git.defalsify.org/vise.git/persist"
"git.defalsify.org/vise.git/logging"
"git.grassecon.net/urdt/ussd/internal/storage"
)
var (
logg = logging.NewVanilla().WithDomain("handlers")
)
var (
ErrInvalidRequest = errors.New("invalid request for context")
ErrSessionMissing = errors.New("missing session")
ErrInvalidInput = errors.New("invalid input")
ErrStorage = errors.New("storage retrieval fail")
ErrEngineType = errors.New("incompatible engine")
ErrEngineInit = errors.New("engine init fail")
ErrEngineExec = errors.New("engine exec fail")
)
type RequestSession struct {
Ctx context.Context
Config engine.Config
Engine engine.Engine
Input []byte
Storage storage.Storage
Writer io.Writer
Continue bool
}
type engineMaker func(cfg engine.Config, rs resource.Resource, pr *persist.Persister) engine.Engine
// TODO: seems like can remove this.
type RequestParser interface {
GetSessionId(rq any) (string, error)
GetInput(rq any) ([]byte, error)
}
type RequestHandler interface {
GetConfig() engine.Config
GetRequestParser() RequestParser
GetEngine(cfg engine.Config, rs resource.Resource, pe *persist.Persister) engine.Engine
Process(rs RequestSession) (RequestSession, error)
Output(rs RequestSession) (RequestSession, error)
AtOutput(rs RequestSession) (RequestSession, error)
Reset(rs RequestSession) (RequestSession, error)
Shutdown()
}