feat: big ahh commit

- agent+proto+backend: transfer service status
- agent: fix returning empty message on nonzero exit status
- backend: refactor collector+commander and handlers dependent on them: implement agent accounting via grpc stats handler

agent/go.mod

@@ -3,7 +3,7 @@ module gitea.d3m0k1d.ru/d3m0k1d/HellreigN/agent
 go 1.26.1
 
 require (
-	gitea.d3m0k1d.ru/d3m0k1d/HellreigN/proto v0.0.0-20260403214837-94be9799f47d
+	gitea.d3m0k1d.ru/d3m0k1d/HellreigN/proto v0.0.0-20260404174628-3389df740c20
 	github.com/hpcloud/tail v1.0.0
 	github.com/samber/lo v1.53.0
 	golang.org/x/sync v0.20.0

agent/internal/commander/impl.go

@@ -47,8 +47,14 @@ func (*CommandExecutor) Execute(command *proto.Command) (fc *proto.FinishedComma
 		_, err := io.Copy(stderrbuf, stderr)
 		return err
 	})
-	if err := cmd.Wait(); err != nil {
-		return nil, err
+	if waitErr := cmd.Wait(); waitErr != nil {
+		var exitErr *exec.ExitError
+		if !errors.As(waitErr, &exitErr) {
+			return nil, waitErr
+		}
+		fc.Status = int32(exitErr.ExitCode())
+	} else {
+		fc.Status = int32(cmd.ProcessState.ExitCode())
 	}
 	if err := eg.Wait(); err != nil {
 		return nil, err

agent/main.go

@@ -22,6 +22,7 @@ import (
 	"github.com/samber/lo"
 	"golang.org/x/sync/errgroup"
 	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials"
 	"google.golang.org/grpc/metadata"
 )
 
@@ -110,6 +111,13 @@ func main() {
 		return ccli.HandleCommands(ctx, grpcAddr, creds)
 	})
 
+	// Start services update stream
+	if len(cfg.Services) > 0 {
+		wg.Go(func() error {
+			return reportServices(ctx, grpcAddr, creds, cfg.Label, cfg.Services, lgr)
+		})
+	}
+
 	// Start log collectors
 	if len(cfg.Services) > 0 {
 		wg.Go(func() error {
@@ -301,3 +309,52 @@ func reconnectStream(
 
 	return fmt.Errorf("failed to reconnect after 5 attempts for service %s", service)
 }
+
+// reportServices periodically sends service status updates to the backend via gRPC.
+// For now, all configured services are reported as "up" every 5 seconds.
+func reportServices(
+	ctx context.Context,
+	grpcAddr string,
+	creds credentials.TransportCredentials,
+	label string,
+	services []config.ServiceConfig,
+	lgr *logger.Logger,
+) error {
+	conn, err := grpc.NewClient(grpcAddr, grpc.WithTransportCredentials(creds))
+	if err != nil {
+		return fmt.Errorf("failed to connect for services report: %w", err)
+	}
+	defer conn.Close()
+
+	ccli := proto.NewCollectorClient(conn)
+	ticker := time.NewTicker(5 * time.Second)
+	defer ticker.Stop()
+
+	// Send immediately on start, then every 5 seconds
+	for {
+		svcUpdates := make([]*proto.ServicesUpdate_ServiceUpdate, 0, len(services))
+		for _, svc := range services {
+			svcUpdates = append(svcUpdates, &proto.ServicesUpdate_ServiceUpdate{
+				Name:   svc.Name,
+				Status: "up",
+			})
+		}
+
+		md := metadata.New(map[string]string{"whoami": label})
+		_, err := ccli.ReportServices(
+			metadata.NewOutgoingContext(ctx, md),
+			&proto.ServicesUpdate{Services: svcUpdates},
+		)
+		if err != nil {
+			lgr.Warn("Failed to report services", "err", err)
+		} else {
+			lgr.Debug("Services reported successfully", "count", len(services))
+		}
+
+		select {
+		case <-ctx.Done():
+			return ctx.Err()
+		case <-ticker.C:
+		}
+	}
+}

backend/cmd/main.go

@@ -82,10 +82,13 @@ func main() {
 		}()
 	}
 
-	// Initialize Collector gRPC service
-	coll := collector.New(logRepo)
+	// Initialize Collector (log streaming) with its own ConnTracker
+	collTracker := collector.NewConnTracker()
+	coll := collector.New(logRepo, collTracker)
 
-	cmdr := commander.New(jobRepo)
+	// Initialize ConnTracker for Commander agent lifecycle
+	cmdTracker := commander.NewConnTracker()
+	cmdr := commander.New(jobRepo, cmdTracker)
 
 	// Initialize script interpreter repository and service
 	scriptRepo := repository.NewScriptInterpreterRepo(db)
@@ -93,8 +96,9 @@ func main() {
 		log.Printf("Warning: failed to initialize script interpreters table: %v", err)
 	}
 	scriptSvc := service.NewScriptServiceWithInterpreters(h.Repo, scriptRepo)
-	scriptHandlers := handlers.NewScriptHandlers(scriptSvc, cmdr)
-	jobsHandlers := handlers.NewJobsHandlers(cmdr, scriptSvc)
+	scriptHandlers := handlers.NewScriptHandlers(scriptSvc, cmdTracker)
+	jobsHandlers := handlers.NewJobsHandlers(cmdTracker, scriptSvc,
+		os.Getenv("WHEREAMI") /* our address for redirects */)
 
 	// Initialize script management service and handlers
 	scriptManageSvc := service.NewScriptService(h.Repo)
@@ -201,6 +205,7 @@ func main() {
 		jobsGroup.Use(auth.AuthMiddleware(), handlers.RequireAdmin())
 		{
 			jobsGroup.POST("", jobsHandlers.AddJob)
+			jobsGroup.POST("/:id/wait", jobsHandlers.WaitJob)
 		}
 
 		// Agent registration
@@ -290,7 +295,11 @@ func main() {
 		MinVersion:   tls.VersionTLS12,
 	}
 
-	grpcServer := grpc.NewServer(grpc.Creds(credentials.NewTLS(tlsConfig)))
+	grpcServer := grpc.NewServer(
+		grpc.Creds(credentials.NewTLS(tlsConfig)),
+		grpc.StatsHandler(collTracker),
+		grpc.StatsHandler(cmdTracker),
+	)
 	proto.RegisterCommanderServer(grpcServer, cmdr)
 	proto.RegisterCollectorServer(grpcServer, coll)
 

backend/go.mod

@@ -3,7 +3,7 @@ module gitea.d3m0k1d.ru/d3m0k1d/HellreigN/backend
 go 1.26.1
 
 require (
-	gitea.d3m0k1d.ru/d3m0k1d/HellreigN/proto v0.0.0-20260404165608-1d75935a08a5
+	gitea.d3m0k1d.ru/d3m0k1d/HellreigN/proto v0.0.0-20260404174628-3389df740c20
 	github.com/ClickHouse/clickhouse-go/v2 v2.44.0
 	github.com/gin-gonic/gin v1.12.0
 	github.com/samber/lo v1.53.0

backend/internal/grpcsrv/collector/collector.go

@@ -4,7 +4,6 @@ import (
 	"fmt"
 	"io"
 	"log"
-	"sync"
 	"time"
 
 	"gitea.d3m0k1d.ru/d3m0k1d/HellreigN/backend/internal/repository"
@@ -13,26 +12,19 @@ import (
 	"google.golang.org/grpc/metadata"
 )
 
+// Collector handles log streaming from connected agents.
 type Collector struct {
 	proto.UnimplementedCollectorServer
 	logRepo       *repository.LogRepository
-	agents        map[string]*Agent
-	mu            sync.RWMutex
+	tracker       *ConnTracker
 	batchSize     int
 	flushInterval time.Duration
 }
 
-type Agent struct {
-	ID          string
-	Label       string
-	Services    []string
-	ConnectedAt time.Time
-}
-
-func New(logRepo *repository.LogRepository) *Collector {
+func New(logRepo *repository.LogRepository, tracker *ConnTracker) *Collector {
 	return &Collector{
 		logRepo:       logRepo,
-		agents:        make(map[string]*Agent),
+		tracker:       tracker,
 		batchSize:     100,
 		flushInterval: 2 * time.Second,
 	}
@@ -56,27 +48,15 @@ func (c *Collector) Stream(stream proto.Collector_StreamServer) error {
 	}
 	service := serviceVals[0]
 
-	servicesVals := md["services"]
-	var services []string
-	if len(servicesVals) > 0 {
-		services = servicesVals
-	}
-
-	// Register agent
-	c.mu.Lock()
-	c.agents[agentName] = &Agent{
+	agent := &Agent{
 		ID:          agentName,
 		Label:       agentName,
-		Services:    services,
+		Services:    make([]Service, 0),
 		ConnectedAt: time.Now(),
 	}
-	c.mu.Unlock()
 
-	defer func() {
-		c.mu.Lock()
-		delete(c.agents, agentName)
-		c.mu.Unlock()
-	}()
+	c.tracker.Register(agent)
+	defer c.tracker.Unregister(agent.ID)
 
 	log.Printf("Agent %s connected, streaming logs for service: %s", agentName, service)
 
@@ -139,7 +119,6 @@ func (c *Collector) Stream(stream proto.Collector_StreamServer) error {
 	for {
 		select {
 		case <-stream.Context().Done():
-			// Context cancelled, flush remaining
 			_ = flush()
 			return stream.Context().Err()
 		case <-ticker.C:
@@ -162,7 +141,6 @@ func (c *Collector) Stream(stream proto.Collector_StreamServer) error {
 			}
 		case err := <-errCh:
 			if err == io.EOF {
-				// Client closed stream
 				return flush()
 			}
 			return fmt.Errorf("failed to receive: %w", err)
@@ -170,19 +148,12 @@ func (c *Collector) Stream(stream proto.Collector_StreamServer) error {
 	}
 }
 
+// GetAgent delegates to the tracker.
 func (c *Collector) GetAgent(name string) (*Agent, bool) {
-	c.mu.RLock()
-	defer c.mu.RUnlock()
-	a, ok := c.agents[name]
-	return a, ok
+	return c.tracker.GetAgent(name)
 }
 
+// Agents delegates to the tracker.
 func (c *Collector) Agents() []*Agent {
-	c.mu.RLock()
-	defer c.mu.RUnlock()
-	result := make([]*Agent, 0, len(c.agents))
-	for _, a := range c.agents {
-		result = append(result, a)
-	}
-	return result
+	return c.tracker.Agents()
 }

backend/internal/grpcsrv/collector/services.go

@@ -0,0 +1,38 @@
+package collector
+
+import (
+	"context"
+	"fmt"
+	"log"
+
+	"gitea.d3m0k1d.ru/d3m0k1d/HellreigN/proto/proto"
+	"google.golang.org/grpc/metadata"
+)
+
+// ReportServices handles a unary service status update from an agent.
+// Agents send their current services list, which is stored in the collector.
+func (c *Collector) ReportServices(ctx context.Context, req *proto.ServicesUpdate) (*proto.ServicesUpdateResp, error) {
+	md, ok := metadata.FromIncomingContext(ctx)
+	if !ok {
+		return nil, fmt.Errorf("no metadata in context")
+	}
+
+	whoamiVals := md["whoami"]
+	if len(whoamiVals) == 0 {
+		return nil, fmt.Errorf("whoami metadata missing")
+	}
+	agentName := whoamiVals[0]
+
+	services := make([]Service, 0, len(req.Services))
+	for _, s := range req.Services {
+		services = append(services, Service{s.Name, s.Status})
+	}
+
+	if ok := c.tracker.UpdateServices(agentName, services); ok {
+		log.Printf("Updated services for agent %s: %v", agentName, services)
+	} else {
+		log.Printf("Warning: received services update for unknown agent %s", agentName)
+	}
+
+	return &proto.ServicesUpdateResp{}, nil
+}

backend/internal/grpcsrv/collector/tracker.go

@@ -0,0 +1,111 @@
+package collector
+
+import (
+	"context"
+	"log"
+	"sync"
+	"time"
+
+	"google.golang.org/grpc/metadata"
+	"google.golang.org/grpc/stats"
+)
+
+// ConnTracker tracks connected Collector agents and handles cleanup on disconnect.
+// It implements grpc.StatsHandler for disconnect detection.
+type ConnTracker struct {
+	mu     sync.RWMutex
+	agents map[string]*Agent
+}
+
+func NewConnTracker() *ConnTracker {
+	return &ConnTracker{
+		agents: make(map[string]*Agent),
+	}
+}
+
+// Register adds an agent to the tracker. Called by Collector.Stream().
+func (t *ConnTracker) Register(agent *Agent) {
+	t.mu.Lock()
+	t.agents[agent.ID] = agent
+	t.mu.Unlock()
+	log.Printf("[collector] agent registered: %s", agent.ID)
+}
+
+// Unregister removes an agent from the tracker.
+func (t *ConnTracker) Unregister(id string) {
+	t.mu.Lock()
+	delete(t.agents, id)
+	t.mu.Unlock()
+	log.Printf("[collector] agent unregistered: %s", id)
+}
+
+// GetAgent returns the agent for the given ID.
+func (t *ConnTracker) GetAgent(id string) (*Agent, bool) {
+	t.mu.RLock()
+	defer t.mu.RUnlock()
+	a, ok := t.agents[id]
+	return a, ok
+}
+
+// Agents returns all connected agents.
+func (t *ConnTracker) Agents() []*Agent {
+	t.mu.RLock()
+	defer t.mu.RUnlock()
+	result := make([]*Agent, 0, len(t.agents))
+	for _, a := range t.agents {
+		result = append(result, a)
+	}
+	return result
+}
+
+// grpc.StatsHandler implementation.
+
+func (t *ConnTracker) TagRPC(ctx context.Context, _ *stats.RPCTagInfo) context.Context {
+	return ctx
+}
+
+func (t *ConnTracker) HandleRPC(ctx context.Context, _ stats.RPCStats) {}
+
+func (t *ConnTracker) TagConn(ctx context.Context, _ *stats.ConnTagInfo) context.Context {
+	return ctx
+}
+
+func (t *ConnTracker) HandleConn(ctx context.Context, s stats.ConnStats) {
+	switch s.(type) {
+	case *stats.ConnEnd:
+		md, ok := metadata.FromIncomingContext(ctx)
+		if !ok {
+			return
+		}
+		whoamiVals := md["whoami"]
+		if len(whoamiVals) == 0 {
+			return
+		}
+		t.Unregister(whoamiVals[0])
+	}
+}
+
+// UpdateServices updates the services list for the given agent.
+func (t *ConnTracker) UpdateServices(id string, services []Service) bool {
+	t.mu.Lock()
+	defer t.mu.Unlock()
+	agent, ok := t.agents[id]
+	if !ok {
+		return false
+	}
+	agent.Services = services
+	return true
+}
+
+// Service represents a named service with its current status.
+type Service struct {
+	Name, Status string
+}
+
+// Agent represents a connected agent streaming logs to the collector.
+type Agent struct {
+	ID          string
+	Label       string
+	Services    []Service
+	ConnectedAt time.Time
+}

backend/internal/grpcsrv/commander/commander.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"io"
+	"log"
 	"sync"
 
 	"gitea.d3m0k1d.ru/d3m0k1d/HellreigN/backend/internal/models"
@@ -11,27 +12,30 @@ import (
 	"golang.org/x/sync/errgroup"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/metadata"
+	"google.golang.org/grpc/stats"
 )
 
+// Commander handles command execution on connected agents.
 type Commander struct {
 	proto.UnimplementedCommanderServer
-	agents map[string]Agent
-	mu     sync.RWMutex
-	jobber Jobber
+	tracker *ConnTracker
+	jobber  Jobber
 }
 
+// Jobber persists job state.
 type Jobber interface {
 	InitJob(ctx context.Context, agentID string, job models.JobForInsert) (int64, error)
 	UpdateJobInDB(ctx context.Context, jid int64, msg models.JobForUpdate) (models.Job, error)
 }
 
-func New(jobber Jobber) *Commander {
+func New(jobber Jobber, tracker *ConnTracker) *Commander {
 	return &Commander{
-		agents: make(map[string]Agent),
-		jobber: jobber,
+		jobber:  jobber,
+		tracker: tracker,
 	}
 }
 
+// Agent represents a connected agent with an active bidirectional stream.
 type Agent struct {
 	bidi   grpc.BidiStreamingServer[proto.FinishedCommand, proto.Command]
 	in     chan *proto.Command
@@ -40,10 +44,11 @@ type Agent struct {
 	ctx    context.Context
 	aid    string
 
-	Token    string // agent id
+	Token    string
 	Label    string
 	Services []string
 }
+
 type JobOut struct {
 	fc  models.Job
 	err error
@@ -53,61 +58,91 @@ type Job struct {
 	out chan JobOut
 }
 
-func (self *Commander) GetAgent(aid string) (agent Agent, ok bool) {
-	self.mu.RLock()
-	defer self.mu.RUnlock()
-	agent, ok = self.agents[aid]
-	return
+// ConnTracker tracks connected agents and handles cleanup on disconnect.
+// It implements grpc.StatsHandler for disconnect detection.
+type ConnTracker struct {
+	mu     sync.RWMutex
+	agents map[string]*Agent
 }
 
 // GetAgentByLabel searches for an agent by its human-readable label.
-func (self *Commander) GetAgentByLabel(label string) (agent Agent, ok bool) {
+func (self *ConnTracker) GetAgentByLabel(label string) (agent Agent, ok bool) {
 	self.mu.RLock()
 	defer self.mu.RUnlock()
 	for _, a := range self.agents {
 		if a.Label == label {
-			return a, true
+			return *a, true
 		}
 	}
 	return
 }
 
-func (self *Commander) Agents() []Agent {
-	self.mu.RLock()
-	defer self.mu.RUnlock()
-	result := make([]Agent, 0, len(self.agents))
-	for _, a := range self.agents {
+func NewConnTracker() *ConnTracker {
+	return &ConnTracker{
+		agents: make(map[string]*Agent),
+	}
+}
+
+func (t *ConnTracker) Register(aid string, agent *Agent) {
+	t.mu.Lock()
+	t.agents[aid] = agent
+	t.mu.Unlock()
+	log.Printf("[conntracker] agent registered: %s", aid)
+}
+
+func (t *ConnTracker) Unregister(aid string) {
+	t.mu.Lock()
+	delete(t.agents, aid)
+	t.mu.Unlock()
+	log.Printf("[conntracker] agent unregistered: %s", aid)
+}
+
+func (t *ConnTracker) GetAgent(aid string) (*Agent, bool) {
+	t.mu.RLock()
+	defer t.mu.RUnlock()
+	a, ok := t.agents[aid]
+	return a, ok
+}
+
+func (t *ConnTracker) Agents() []*Agent {
+	t.mu.RLock()
+	defer t.mu.RUnlock()
+	result := make([]*Agent, 0, len(t.agents))
+	for _, a := range t.agents {
 		result = append(result, a)
 	}
 	return result
 }
 
-func (self *Commander) removeAgent(aid string) {
-	self.mu.Lock()
-	defer self.mu.Unlock()
-	delete(self.agents, aid)
+// grpc.StatsHandler implementation.
+
+func (t *ConnTracker) TagRPC(ctx context.Context, _ *stats.RPCTagInfo) context.Context {
+	return ctx
 }
 
-func (self *Agent) AddJob(job models.JobForInsert) (int64, error) {
-	jid, err := self.jobber.InitJob(self.ctx, self.aid, job)
-	if err != nil {
-		return 0, err
+func (t *ConnTracker) HandleRPC(ctx context.Context, _ stats.RPCStats) {}
+
+func (t *ConnTracker) TagConn(ctx context.Context, _ *stats.ConnTagInfo) context.Context {
+	return ctx
+}
+
+func (t *ConnTracker) HandleConn(ctx context.Context, s stats.ConnStats) {
+	switch s.(type) {
+	case *stats.ConnEnd:
+		md, ok := metadata.FromIncomingContext(ctx)
+		if !ok {
+			return
+		}
+		aidVals := md["agentid"]
+		if len(aidVals) == 0 {
+			return
+		}
+		t.Unregister(aidVals[0])
 	}
-	self.jobs[jid] = newJob()
-	self.in <- &proto.Command{
-		Id:      jid,
-		Command: job.Command,
-		Stdin:   job.Stdin,
-	}
-	return jid, err
 }
 
-func (self *Agent) WaitJob(jid int64) (*models.Job, error) {
-	result := <-self.jobs[jid].out
-	return &result.fc, result.err
-}
-
-func (self *Commander) Stream(
+// Stream handles a new agent connection and runs the send/recv loops.
+func (c *Commander) Stream(
 	bidi grpc.BidiStreamingServer[proto.FinishedCommand, proto.Command],
 ) error {
 	md, ok := metadata.FromIncomingContext(bidi.Context())
@@ -121,35 +156,58 @@ func (self *Commander) Stream(
 	aid := aidVals[0]
 
 	var label string
-	labelVals := md["label"]
-	if len(labelVals) > 0 {
-		label = labelVals[0]
+	if vals := md["label"]; len(vals) > 0 {
+		label = vals[0]
 	}
 
-	agent := newAgent(bidi, self.jobber, aid, label)
-	self.mu.Lock()
-	self.agents[aid] = agent
-	self.mu.Unlock()
+	agent := NewAgent(bidi.Context(), c.jobber, aid, label)
+	agent.bidi = bidi
+
+	c.tracker.Register(aid, agent)
+	defer c.tracker.Unregister(aid)
 
-	defer self.removeAgent(aid)
 	return agent.run()
 }
 
-func (self *Agent) run() error {
+// GetAgent returns the agent by ID. Delegates to the tracker.
+func (c *Commander) GetAgent(aid string) (*Agent, bool) {
+	return c.tracker.GetAgent(aid)
+}
+
+func (a *Agent) AddJob(job models.JobForInsert) (int64, error) {
+	jid, err := a.jobber.InitJob(a.ctx, a.aid, job)
+	if err != nil {
+		return 0, err
+	}
+	a.jobs[jid] = newJob()
+	a.in <- &proto.Command{
+		Id:      jid,
+		Command: job.Command,
+		Stdin:   job.Stdin,
+	}
+	return jid, nil
+}
+
+func (a *Agent) WaitJob(jid int64) (*models.Job, error) {
+	result := <-a.jobs[jid].out
+	return &result.fc, result.err
+}
+
+func (a *Agent) run() error {
 	wg := new(errgroup.Group)
-	wg.Go(self.recv)
-	wg.Go(self.send)
+	wg.Go(a.recv)
+	wg.Go(a.send)
 	return wg.Wait()
 }
 
-func (self *Agent) recv() error {
+func (a *Agent) recv() error {
 	for {
 		job, err := func() (job models.Job, err error) {
-			msg, err := self.bidi.Recv()
+			msg, err := a.bidi.Recv()
 			if err != nil {
 				return
 			}
-			return self.jobber.UpdateJobInDB(self.ctx, msg.Id, models.JobForUpdate{
+			return a.jobber.UpdateJobInDB(a.ctx, msg.Id, models.JobForUpdate{
 				Stdout: msg.Stdout,
 				Stderr: msg.Stderr,
 				Status: msg.Status,
@@ -158,8 +216,7 @@ func (self *Agent) recv() error {
 		if err == io.EOF {
 			return nil
 		}
-		// TODO: that would blow up at some point
-		out := self.jobs[job.ID].out
+		out := a.jobs[job.ID].out
 		out <- JobOut{
 			fc:  job,
 			err: err,
@@ -168,28 +225,26 @@ func (self *Agent) recv() error {
 	}
 }
 
-func (self *Agent) send() error {
-	for job := range self.in {
-		if err := self.bidi.Send(job); err != nil {
+func (a *Agent) send() error {
+	for job := range a.in {
+		if err := a.bidi.Send(job); err != nil {
 			return err
 		}
 	}
 	return io.EOF
-	// self.jobs[]
 }
 
-func newAgent(
-	bidi grpc.BidiStreamingServer[proto.FinishedCommand, proto.Command],
+func NewAgent(
+	ctx context.Context,
 	jobber Jobber,
 	aid string,
 	label string,
-) Agent {
-	return Agent{
-		bidi:   bidi,
-		in:     make(chan *proto.Command),
+) *Agent {
+	return &Agent{
+		in:     make(chan *proto.Command, 10),
 		jobs:   make(map[int64]Job),
 		jobber: jobber,
-		ctx:    bidi.Context(),
+		ctx:    ctx,
 		aid:    aid,
 		Label:  label,
 		Token:  aid,

backend/internal/handlers/agents.go

@@ -1,6 +1,7 @@
 package handlers
 
 import (
+	"fmt"
 	"net/http"
 
 	"gitea.d3m0k1d.ru/d3m0k1d/HellreigN/backend/internal/grpcsrv/collector"
@@ -36,10 +37,14 @@ func (ag *AgentsGroup) List(c *gin.Context) {
 	agents := make([]AgentInfo, 0)
 
 	for _, agent := range ag.collector.Agents() {
+		services := make([]string, 0, len(agent.Services))
+		for _, s := range agent.Services {
+			services = append(services, fmt.Sprintf("%s:%s", s.Name, s.Status))
+		}
 		agents = append(agents, AgentInfo{
 			Token:       agent.ID,
 			Label:       agent.Label,
-			Services:    agent.Services,
+			Services:    services,
 			ConnectedAt: agent.ConnectedAt.Format("2006-01-02 15:04:05"),
 		})
 	}

backend/internal/handlers/jobs.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"net/http"
 	"os/exec"
+	"strconv"
 
 	"gitea.d3m0k1d.ru/d3m0k1d/HellreigN/backend/internal/grpcsrv/commander"
 	"gitea.d3m0k1d.ru/d3m0k1d/HellreigN/backend/internal/models"
@@ -13,21 +14,32 @@ import (
 )
 
 type JobsHandlers struct {
-	cmder *commander.Commander
-	svc   *service.ScriptService
+	tracker  *commander.ConnTracker
+	svc      *service.ScriptService
+	whereami string
 }
 
-func NewJobsHandlers(cmder *commander.Commander, svc *service.ScriptService) JobsHandlers {
-	return JobsHandlers{cmder: cmder, svc: svc}
+func NewJobsHandlers(tracker *commander.ConnTracker, svc *service.ScriptService, whereami string) JobsHandlers {
+	return JobsHandlers{tracker: tracker, svc: svc, whereami: whereami}
 }
 
+// AddJobIn is the request body for creating a job.
 type AddJobIn struct {
 	Command       string  `json:"command"        binding:"required"`
 	InterpreterID int64   `json:"interpreter_id"`
 	Stdin         *string `json:"stdin"`
 	AgentID       string  `json:"agent_id"       binding:"required"`
 }
+
+// AddJobOut is the response body for a submitted job.
 type AddJobOut struct {
+	ID      int64    `json:"id"`
+	Command []string `json:"command"`
+	WaitURL string   `json:"wait_url"`
+}
+
+// JobResult is the response body for a completed job.
+type JobResult struct {
 	ID      int64    `json:"id"`
 	Command []string `json:"command"`
 	Stdin   *string  `json:"stdin"`
@@ -36,65 +48,152 @@ type AddJobOut struct {
 	Status  int32    `json:"status"`
 }
 
-// AddJob creates and executes a job on a target agent.
-// @Summary Create and run a job on an agent
-// @Description Sends a command to the specified agent, waits for execution, and returns the result
+// WaitJobIn is the request body for waiting on a job.
+type WaitJobIn struct {
+	AgentID string `json:"agent_id" binding:"required"`
+}
+
+// AddJob submits a job to an agent and returns a wait_url for the result.
+// @Summary Submit a job to an agent
+// @Description Sends a command to the specified agent and returns a URL to wait for the result
 // @Tags jobs
 // @Accept json
 // @Produce json
 // @Param body body AddJobIn true "Job request"
 // @Success 201 {object} AddJobOut
-// @Security Bearer
 // @Router /jobs [post]
-func (self *JobsHandlers) AddJob(c *gin.Context) {
-	err := func() error {
-		var in AddJobIn
-		if err := c.Bind(&in); err != nil {
-			return err
-		}
-		agent, ok := self.cmder.GetAgent(in.AgentID)
-		if !ok {
-			c.Status(http.StatusNotFound)
-			return fmt.Errorf("agent not found")
-		}
+func (h *JobsHandlers) AddJob(c *gin.Context) {
+	var in AddJobIn
+	if err := c.Bind(&in); err != nil {
+		c.Error(err)
+		return
+	}
 
-		var command []string
-		if in.InterpreterID == 0 {
-			command = []string{"sh", "-c", in.Command}
-		} else {
-			var err error
-			command, err = self.svc.ResolveCommand(
-				c.Request.Context(),
-				in.InterpreterID,
-				in.Command,
-			)
-			if err != nil {
-				return err
-			}
-		}
+	agent, ok := h.tracker.GetAgent(in.AgentID)
+	if !ok {
+		c.Status(http.StatusNotFound)
+		c.Error(fmt.Errorf("agent not found"))
+		return
+	}
 
-		jid, err := agent.AddJob(models.JobForInsert{
-			Command: command,
-			Stdin:   in.Stdin,
-		})
-		if err != nil {
-			return err
-		}
-		job, err := agent.WaitJob(jid)
-		if err != nil && !errors.As(err, &exec.ExitError{}) {
-			return err
-		}
-		c.JSON(http.StatusCreated, AddJobOut{
-			ID:      job.ID,
-			Command: job.Command,
-			Stdin:   job.Stdin,
-			Stdout:  job.Stdout,
-			Stderr:  job.Stderr,
-			Status:  job.Status,
-		})
-		return nil
-	}()
+	command, err := resolveCommand(c, h.svc, in.InterpreterID, in.Command)
 	if err != nil {
 		c.Error(err)
+		return
 	}
+
+	jid, err := agent.AddJob(models.JobForInsert{
+		Command: command,
+		Stdin:   in.Stdin,
+	})
+	if err != nil {
+		c.Error(err)
+		return
+	}
+
+	waitURL := fmt.Sprintf("%s/api/v1/jobs/%d/wait", h.whereami, jid)
+
+	c.JSON(http.StatusCreated, AddJobOut{
+		ID:      jid,
+		Command: command,
+		WaitURL: waitURL,
+	})
+}
+
+// WaitJob waits for a submitted job to complete (long-poll).
+// If the job is already done, returns immediately.
+// @Summary Wait for job result
+// @Description Long-polls for a job result. Returns immediately if the job is already finished.
+// @Tags jobs
+// @Accept json
+// @Produce json
+// @Param id path int true "Job ID"
+// @Param body body WaitJobIn true "Agent reference"
+// @Success 200 {object} JobResult
+// @Failure 400 {object} map[string]string
+// @Failure 404 {object} map[string]string
+// @Router /jobs/{id}/wait [post]
+func (h *JobsHandlers) WaitJob(c *gin.Context) {
+	jid, err := strconv.ParseInt(c.Param("id"), 10, 64)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid job id"})
+		return
+	}
+
+	var in WaitJobIn
+	if err := c.Bind(&in); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid request body"})
+		return
+	}
+
+	agent, ok := h.tracker.GetAgent(in.AgentID)
+	if !ok {
+		c.Status(http.StatusNotFound)
+		c.Error(fmt.Errorf("agent not found"))
+		return
+	}
+
+	job, err := agent.WaitJob(jid)
+	if err != nil {
+		c.Error(err)
+		return
+	}
+
+	c.JSON(http.StatusOK, JobResult{
+		ID:      job.ID,
+		Command: job.Command,
+		Stdin:   job.Stdin,
+		Stdout:  job.Stdout,
+		Stderr:  job.Stderr,
+		Status:  job.Status,
+	})
+}
+
+func resolveCommand(c *gin.Context, svc *service.ScriptService, interpID int64, cmd string) ([]string, error) {
+	if interpID == 0 {
+		return []string{"sh", "-c", cmd}, nil
+	}
+
+	command, err := svc.ResolveCommand(c.Request.Context(), interpID, cmd)
+	if err != nil {
+		return nil, err
+	}
+
+	return command, nil
+}
+
+// @Summary Check command path
+// @Description Validates that a command binary exists on the system
+// @Tags jobs
+// @Accept json
+// @Param body body CheckCmdIn true "Command to check"
+// @Success 200 {object} CheckCmdOut
+// @Failure 404 {object} map[string]string
+// @Router /jobs/check_cmd [post]
+func (h *JobsHandlers) CheckCmd(c *gin.Context) {
+	var in struct {
+		Command string `json:"command" binding:"required"`
+	}
+	if err := c.Bind(&in); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid request"})
+		return
+	}
+
+	if _, err := exec.LookPath(in.Command); err != nil {
+		if errors.Is(err, exec.ErrNotFound) {
+			c.JSON(http.StatusNotFound, gin.H{"error": "command not found"})
+			return
+		}
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, CheckCmdOut{Exists: true})
+}
+
+type CheckCmdIn struct {
+	Command string `json:"command" binding:"required" example:"bash"`
+}
+type CheckCmdOut struct {
+	Exists bool `json:"exists"`
 }

backend/internal/handlers/scripts.go

@@ -13,12 +13,12 @@ import (
 )
 
 type ScriptHandlers struct {
-	svc   *service.ScriptService
-	cmder *commander.Commander
+	svc     *service.ScriptService
+	tracker *commander.ConnTracker
 }
 
-func NewScriptHandlers(svc *service.ScriptService, cmder *commander.Commander) ScriptHandlers {
-	return ScriptHandlers{svc: svc, cmder: cmder}
+func NewScriptHandlers(svc *service.ScriptService, tracker *commander.ConnTracker) ScriptHandlers {
+	return ScriptHandlers{svc: svc, tracker: tracker}
 }
 
 type RunScriptIn struct {
@@ -47,14 +47,14 @@ type RunScriptOut struct {
 // @Success 201 {object} RunScriptOut
 // @Security Bearer
 // @Router /scripts/run [post]
-func (self *ScriptHandlers) RunScript(c *gin.Context) {
+func (h *ScriptHandlers) RunScript(c *gin.Context) {
 	err := func() error {
 		var in RunScriptIn
 		if err := c.Bind(&in); err != nil {
 			return err
 		}
 
-		command, err := self.svc.ResolveCommand(
+		command, err := h.svc.ResolveCommand(
 			c.Request.Context(),
 			in.InterpreterID,
 			in.ScriptText,
@@ -63,7 +63,7 @@ func (self *ScriptHandlers) RunScript(c *gin.Context) {
 			return err
 		}
 
-		agent, ok := self.cmder.GetAgent(in.AgentID)
+		agent, ok := h.tracker.GetAgent(in.AgentID)
 		if !ok {
 			c.Status(http.StatusNotFound)
 			return fmt.Errorf("agent not found")
@@ -105,8 +105,8 @@ func (self *ScriptHandlers) RunScript(c *gin.Context) {
 // @Success 200 {array} repository.ScriptInterpreter
 // @Security Bearer
 // @Router /scripts/interpreters [get]
-func (self *ScriptHandlers) ListInterpreters(c *gin.Context) {
-	interpreters, err := self.svc.List(c.Request.Context())
+func (h *ScriptHandlers) ListInterpreters(c *gin.Context) {
+	interpreters, err := h.svc.List(c.Request.Context())
 	if err != nil {
 		c.Error(err)
 		return
@@ -124,14 +124,14 @@ func (self *ScriptHandlers) ListInterpreters(c *gin.Context) {
 // @Success 201 {object} repository.ScriptInterpreter
 // @Security Bearer
 // @Router /scripts/interpreters [post]
-func (self *ScriptHandlers) CreateInterpreter(c *gin.Context) {
+func (h *ScriptHandlers) CreateInterpreter(c *gin.Context) {
 	var in repository.ScriptInterpreterCreate
 	if err := c.BindJSON(&in); err != nil {
 		c.Error(err)
 		return
 	}
 
-	si, err := self.svc.Create(c.Request.Context(), in)
+	si, err := h.svc.Create(c.Request.Context(), in)
 	if err != nil {
 		c.Error(err)
 		return
@@ -148,14 +148,14 @@ func (self *ScriptHandlers) CreateInterpreter(c *gin.Context) {
 // @Success 200 {object} repository.ScriptInterpreter
 // @Security Bearer
 // @Router /scripts/interpreters/:id [get]
-func (self *ScriptHandlers) GetInterpreter(c *gin.Context) {
+func (h *ScriptHandlers) GetInterpreter(c *gin.Context) {
 	id, err := strconv.ParseInt(c.Param("id"), 10, 64)
 	if err != nil {
 		c.Error(err)
 		return
 	}
 
-	si, err := self.svc.GetByID(c.Request.Context(), id)
+	si, err := h.svc.GetByID(c.Request.Context(), id)
 	if err != nil {
 		c.Error(err)
 		return
@@ -174,7 +174,7 @@ func (self *ScriptHandlers) GetInterpreter(c *gin.Context) {
 // @Success 200 {object} repository.ScriptInterpreter
 // @Security Bearer
 // @Router /scripts/interpreters/:id [put]
-func (self *ScriptHandlers) UpdateInterpreter(c *gin.Context) {
+func (h *ScriptHandlers) UpdateInterpreter(c *gin.Context) {
 	id, err := strconv.ParseInt(c.Param("id"), 10, 64)
 	if err != nil {
 		c.Error(err)
@@ -187,7 +187,7 @@ func (self *ScriptHandlers) UpdateInterpreter(c *gin.Context) {
 		return
 	}
 
-	si, err := self.svc.Update(c.Request.Context(), id, in)
+	si, err := h.svc.Update(c.Request.Context(), id, in)
 	if err != nil {
 		c.Error(err)
 		return
@@ -203,14 +203,14 @@ func (self *ScriptHandlers) UpdateInterpreter(c *gin.Context) {
 // @Success 204
 // @Security Bearer
 // @Router /scripts/interpreters/:id [delete]
-func (self *ScriptHandlers) DeleteInterpreter(c *gin.Context) {
+func (h *ScriptHandlers) DeleteInterpreter(c *gin.Context) {
 	id, err := strconv.ParseInt(c.Param("id"), 10, 64)
 	if err != nil {
 		c.Error(err)
 		return
 	}
 
-	if err := self.svc.Delete(c.Request.Context(), id); err != nil {
+	if err := h.svc.Delete(c.Request.Context(), id); err != nil {
 		c.Error(err)
 		return
 	}