v0.5.0

What's Changed

• Bump google.golang.org/grpc from 1.79.2 to 1.79.3 in /transport/grpc_transport by @dependabot[bot] in #53
• Bump google.golang.org/grpc from 1.79.2 to 1.79.3 in /clients/grpc_client by @dependabot[bot] in #54
• feat: add service startup priority by @sxwebdev in #55

New

Startup priority

Services can be assigned a startup priority to control initialization order. Services with the same priority start concurrently within a group. Groups are started sequentially in ascending priority order. Priority 0 (default) services start last, concurrently, after all prioritized groups are ready.

ln.ServicesRunner().Register(
    // Priority 1: DB layer — start concurrently, both must be ready before next group
    launcher.NewService(
        launcher.WithServiceName("postgres"),
        launcher.WithStartupPriority(1),
        launcher.WithService(pgService),
    ),
    launcher.NewService(
        launcher.WithServiceName("redis"),
        launcher.WithStartupPriority(1),
        launcher.WithService(redisService),
    ),
    // Priority 2: message broker — waits for DB layer to be ready
    launcher.NewService(
        launcher.WithServiceName("rabbitmq"),
        launcher.WithStartupPriority(2),
        launcher.WithService(rabbitService),
    ),
    // Priority 0 (default): application services — start concurrently after all groups
    launcher.NewService(
        launcher.WithServiceName("http-server"),
        launcher.WithService(httpService),
    ),
    launcher.NewService(
        launcher.WithServiceName("grpc-server"),
        launcher.WithService(grpcService),
    ),
)
// Start order: (postgres + redis) → rabbitmq → (http + grpc concurrently)

synctest

Cover launcher with synctest and fixed two bugs

Full Changelog: v0.4.0...v0.5.0

v0.4.0

What's Changed

New Features

Service State Machine
Each service now tracks its lifecycle state: idle → starting → running → stopping → stopped / failed.
Access it via svc.State(). The ServiceState type lives in launcher/types and is re-exported from launcher for backward compatibility.

Restart Policy
Services can now restart automatically after failure with exponential backoff:

launcher.WithRestartPolicy(launcher.RestartPolicy{
    Mode:       launcher.RestartOnFailure,
    MaxRetries: 5,
    Delay:      time.Second,
    MaxDelay:   30 * time.Second,
})

Modes: RestartNever (default) / RestartOnFailure / RestartAlways.

Liveness probe /livez
Reads ServiceState directly — no HealthChecker required.
Returns 200 when all services are alive, 503 if any service is in Failed state.

{
  "status": "ok",
  "services": { "db": "running", "cache": "starting", "api": "failed" }
}

Readiness probe /readyz
Combines ServiceState + HealthChecker poll results.
Returns 200 (ready) / 424 (starting) / 503 (failed) with per-service detail:

{
  "status": "starting",
  "services": {
    "db": { "state": "running", "health": "ok" },
    "cache": { "state": "starting", "health": "starting" },
    "api": { "state": "failed", "health": "error" }
  }
}

The existing /healthy endpoint is unchanged (backward compatible).

Global Shutdown Timeout
Hard deadline for the entire graceful shutdown phase:

launcher.WithGlobalShutdownTimeout(30 * time.Second)

Startup Timeout
Per-service timeout independent from ShutdownTimeout:

launcher.WithStartupTimeout(10 * time.Second)

Service Lookup

svc, ok := ln.ServicesRunner().Get("my-service")

Bug Fixes

• BeforeStop/AfterStop hook errors no longer overwrite each other — all errors are now aggregated via errors.Join.

Documentation

• README: new Launcher capabilities table covering all options and interfaces.

---

Migration

No breaking changes. All existing options and interfaces are preserved.
ServiceState constants are re-exported from the launcher package — existing imports continue to work.

v0.3.0

Summary of changes

Breaking changes

service and ops packages merged into launcher

Before	After
service.New(...)	launcher.NewService(...)
service.Option	launcher.ServiceOption
service.IService	launcher/types.IService
service.HealthChecker	launcher/types.HealthChecker
service.Enabler	launcher/types.Enabler
ops.Config	launcher/ops.Config
ops.New(...)	launcher/ops.New(...)
service/pingpong	launcher/services/pingpong

cfg package removed — extracted into a separate repository. Use xconfig instead

---

New packages

• launcher/types — shared interfaces (IService, HealthChecker, Enabler) used by both transports and launcher/ops
• launcher/ops — relocated ops package (metrics, health checker, profiler)
• launcher/services/pingpong — relocated example ping-pong service

---

Bug fixes

• Goroutine leak on service startup error — when a service sent to errChan, cancelFn() was never called and graceWait.Wait() was never reached, leaving all other service goroutines running indefinitely
• SIGKILL in signal list — syscall.SIGKILL cannot be caught via signal.Notify(); removed from util/signal
• Duplicate signal handling in services — every service registered its own signal handler independently of the launcher; removed from service.Start()
• signal.Stop() never called — minor resource leak on launcher exit

---

New behaviour

Double-stop graceful shutdown:

• 1st signal (SIGTERM / SIGINT / SIGQUIT) → graceful shutdown begins, logs "graceful shutdown started, send signal again to force exit"
• 2nd signal during shutdown → immediate os.Exit(1)

---

Dependencies

• Updated go.mod and sub-module dependencies (clients/, transport/grpc_transport, transport/connectrpc_transport)

What's Changed

• Bump golang.org/x/crypto from 0.39.0 to 0.45.0 by @dependabot[bot] in #49
• Bump golang.org/x/net from 0.37.0 to 0.38.0 in /clients/connectrpc_client by @dependabot[bot] in #50
• full refactor service by @sxwebdev in #51

Full Changelog: v0.2.34...v0.3.0

v0.2.34

What's Changed

• Bump golang.org/x/net from 0.37.0 to 0.38.0 in /clients/grpc_client by @dependabot in #46
• Bump golang.org/x/net from 0.37.0 to 0.38.0 by @dependabot in #47
• Update all dependencies by @sxwebdev

Full Changelog: v0.2.33...v0.2.34

v0.2.33

What's Changed

• update deps by @sxwebdev in #44

Full Changelog: v0.2.32...v0.2.33

v0.2.32

What's Changed

• Bump golang.org/x/crypto from 0.30.0 to 0.31.0 by @dependabot in #42
• update all deps by @sxwebdev in #43

Full Changelog: v0.2.31...v0.2.32

v0.2.31

What's Changed

• update ops config by @sxwebdev in #41

Full Changelog: v0.2.30...v0.2.31

v0.2.30

What's Changed

• update configs and deps by @sxwebdev in #40

Full Changelog: v0.2.29...v0.2.30

v0.2.29

What's Changed

• cfg add GetConfigLoader by @sxwebdev in #39

Full Changelog: v0.2.28...v0.2.29

v0.2.28

What's Changed

• fix abs cfg path by @sxwebdev in #38

Full Changelog: v0.2.27...v0.2.28