Rene Nochebuena
bfec1761d0
Introduces code.nochebuena.dev/einherjar/smtp — the email delivery starter for the Einherjar framework. New module with no micro-lib counterpart. Pure stdlib — no external dependencies beyond contracts and core. Interfaces (CT-6: one TypeSpec per file): - Sender — Send(ctx context.Context, msg Message) error - Component — lifecycle.Component + observability.Checkable + Sender - Message — To, CC, BCC, ReplyTo, Subject, Body, ContentType, Attachments - Attachment — Name, ContentType string; Data io.Reader (consumed once on Send) - Template — wraps html/template for email rendering Implementation: - New(logger, cfg) Component — returns noopClient when cfg.Host is empty; SMTP absence must never block a transaction (e.g. account creation) - noopClient: all lifecycle and Send methods return nil; Send logs Warn; Priority LevelDegraded; Name "smtp" - smtpClient: OnInit/OnStart/OnStop are no-ops (stateless stdlib client); HealthCheck: TCP dial to Host:Port; Priority LevelDegraded - Send: buildRawMessage → netsmtp.SendMail; BCC passed in SMTP envelope (RCPT TO) but never written to message headers (RFC 5321/5322 compliance) - buildRawMessage: plain message without attachments; multipart/mixed with quoted-printable body + base64 attachments when Attachments non-empty; multipart.NewWriter created first to obtain boundary before headers are written - ParseFS(fsys, patterns...) (*Template, error) — wraps html/template.ParseFS - Template.Render(name, data) (string, error) — executes named template - net/smtp aliased as netsmtp to avoid package-name collision in package smtp Config (EINHERJAR_SMTP_* env vars): Host, Port(587), User, Password, From - Component interface embeds observability.Identifiable; identifiable.go implements ModulePath and ModuleVersion on both smtpClient and noopClient via runtime/debug.ReadBuildInfo() — prints in launcher banner
2.3 KiB
Summary
Type of change
- Bug fix — non-breaking change that resolves an issue
- New feature — non-breaking addition of functionality
- Breaking change — alters existing behavior or public API
- Documentation update
- Refactor — no functional change, no new API surface
- Test improvement
Description
Testing
- I added or updated tests that cover my changes
- All tests pass locally —
go test ./... - No formatting issues —
gofmt -l .produces no output - No vet warnings —
go vet ./...is clean
Checklist
- At most one exported type per non-test
.gofile (CT-6) - No new external dependencies added without prior discussion in an issue
- Public API changes are reflected in
CHANGELOG.md - Breaking changes include a migration note in the PR description above
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