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305fdddf24
It is useful to define background tasks lifetimes more precisely, especially involving timeouts and other cancellation methods. On top of that, several tracing facilities are context-based (e.g. runtime/trace), so it is possible to use them now.
104 lines
2 KiB
Go
104 lines
2 KiB
Go
package testutils
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import (
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"context"
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"github.com/emersion/go-message/textproto"
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"github.com/foxcpp/maddy/internal/buffer"
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"github.com/foxcpp/maddy/internal/config"
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"github.com/foxcpp/maddy/internal/module"
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)
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type Modifier struct {
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InstName string
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InitErr error
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MailFromErr error
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RcptToErr error
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BodyErr error
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MailFrom map[string]string
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RcptTo map[string]string
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AddHdr textproto.Header
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UnclosedStates int
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}
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func (m Modifier) Init(*config.Map) error {
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return nil
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}
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func (m Modifier) Name() string {
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return "test_modifier"
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}
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func (m Modifier) InstanceName() string {
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return m.InstName
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}
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type modifierState struct {
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m *Modifier
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}
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func (m Modifier) ModStateForMsg(ctx context.Context, msgMeta *module.MsgMetadata) (module.ModifierState, error) {
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if m.InitErr != nil {
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return nil, m.InitErr
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}
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m.UnclosedStates++
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return modifierState{&m}, nil
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}
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func (ms modifierState) RewriteSender(ctx context.Context, mailFrom string) (string, error) {
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if ms.m.MailFromErr != nil {
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return "", ms.m.MailFromErr
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}
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if ms.m.MailFrom == nil {
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return mailFrom, nil
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}
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newMailFrom, ok := ms.m.MailFrom[mailFrom]
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if ok {
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return newMailFrom, nil
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}
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return mailFrom, nil
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}
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func (ms modifierState) RewriteRcpt(ctx context.Context, rcptTo string) (string, error) {
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if ms.m.RcptToErr != nil {
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return "", ms.m.RcptToErr
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}
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if ms.m.RcptTo == nil {
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return rcptTo, nil
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}
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newRcptTo, ok := ms.m.RcptTo[rcptTo]
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if ok {
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return newRcptTo, nil
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}
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return rcptTo, nil
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}
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func (ms modifierState) RewriteBody(ctx context.Context, h *textproto.Header, body buffer.Buffer) error {
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if ms.m.BodyErr != nil {
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return ms.m.BodyErr
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}
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for field := ms.m.AddHdr.Fields(); field.Next(); {
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h.Add(field.Key(), field.Value())
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}
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return nil
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}
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func (ms modifierState) Close() error {
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ms.m.UnclosedStates--
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return nil
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}
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func init() {
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module.Register("test_modifier", func(_, _ string, _, _ []string) (module.Module, error) {
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return &Modifier{}, nil
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})
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module.RegisterInstance(&Modifier{}, nil)
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}
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