feat(backend): implement job storage; tie everything up

backend/internal/grpcsrv/commander/commander.go

@@ -15,11 +15,18 @@ import (
 type Commander struct {
 	proto.UnimplementedCommanderServer
 	agents map[string]Agent
+	jobber Jobber
 }
 
-func New() *Commander {
+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 {
 	return &Commander{
 		agents: make(map[string]Agent),
+		jobber: jobber,
 	}
 }
 
@@ -27,11 +34,13 @@ type Agent struct {
 	bidi   grpc.BidiStreamingServer[proto.FinishedCommand, proto.Command]
 	in     chan *proto.Command
 	jobs   map[int64]Job
-	jobber interface {
-		InitJob(ctx context.Context) (int64, error)
-		UpdateJobInDB(ctx context.Context, jid int64, msg models.JobForUpdate) (models.Job, error)
-	}
-	ctx context.Context
+	jobber Jobber
+	ctx    context.Context
+	aid    string
+
+	Token    string // agent id
+	Label    string
+	Services []string
 }
 type JobOut struct {
 	fc  models.Job
@@ -47,15 +56,23 @@ func (self *Commander) GetAgent(aid string) (agent Agent, ok bool) {
 	return
 }
 
+func (self *Commander) Agents() []Agent {
+	result := make([]Agent, 0, len(self.agents))
+	for _, a := range self.agents {
+		result = append(result, a)
+	}
+	return result
+}
+
 func (self *Agent) AddJob(job models.JobForInsert) (int64, error) {
-	jid, err := self.jobber.InitJob(self.ctx)
+	jid, err := self.jobber.InitJob(self.ctx, self.aid, job)
 	if err != nil {
 		return 0, err
 	}
 	self.in <- &proto.Command{
-		Id:      0,
-		Command: []string{},
-		Stdin:   new(string),
+		Id:      jid,
+		Command: job.Command,
+		Stdin:   job.Stdin,
 	}
 	return jid, err
 }
@@ -75,7 +92,14 @@ func (self *Commander) Stream(bidi grpc.BidiStreamingServer[proto.FinishedComman
 		return fmt.Errorf("agentid metadata missing")
 	}
 	aid := aidVals[0]
-	agent := newAgent(bidi)
+
+	var label string
+	labelVals := md["label"]
+	if len(labelVals) > 0 {
+		label = labelVals[0]
+	}
+
+	agent := newAgent(bidi, self.jobber, aid, label)
 	self.agents[aid] = agent
 	return agent.run()
 }
@@ -121,13 +145,16 @@ func (self *Agent) send() error {
 	// self.jobs[]
 }
 
-func newAgent(bidi grpc.BidiStreamingServer[proto.FinishedCommand, proto.Command]) Agent {
+func newAgent(bidi grpc.BidiStreamingServer[proto.FinishedCommand, proto.Command], jobber Jobber, aid string, label string) Agent {
 	return Agent{
-		bidi,
-		make(chan *proto.Command),
-		make(map[int64]Job),
-		nil,
-		bidi.Context(),
+		bidi:   bidi,
+		in:     make(chan *proto.Command),
+		jobs:   make(map[int64]Job),
+		jobber: jobber,
+		ctx:    bidi.Context(),
+		aid:    aid,
+		Label:  label,
+		Token:  aid,
 	}
 }
 

backend/internal/handlers/agents.go

@@ -1,12 +1,18 @@
 package handlers
 
 import (
+	"gitea.d3m0k1d.ru/d3m0k1d/HellreigN/backend/internal/grpcsrv/commander"
 	"github.com/gin-gonic/gin"
 	"net/http"
 )
 
 type AgentsGroup struct {
 	*Handlers
+	cmder *commander.Commander
+}
+
+func NewAgentsGroup(h *Handlers, cmder *commander.Commander) AgentsGroup {
+	return AgentsGroup{Handlers: h, cmder: cmder}
 }
 
 type AgentInfo struct {
@@ -22,5 +28,14 @@ type AgentInfo struct {
 // @Success 200 {array} AgentInfo
 // @Router /agents [get]
 func (ag *AgentsGroup) List(c *gin.Context) {
-	c.JSON(http.StatusOK, gin.H{"message": "Agents list"})
+	agents := make([]AgentInfo, 0)
+	// iterate over the commander's agents map
+	for _, agent := range ag.cmder.Agents() {
+		agents = append(agents, AgentInfo{
+			Token:    agent.Token,
+			Label:    agent.Label,
+			Services: agent.Services,
+		})
+	}
+	c.JSON(http.StatusOK, agents)
 }

backend/internal/repository/job_repository.go

@@ -0,0 +1,90 @@
+package repository
+
+import (
+	"context"
+	"database/sql"
+	"encoding/json"
+	"fmt"
+
+	"gitea.d3m0k1d.ru/d3m0k1d/HellreigN/backend/internal/models"
+	"gitea.d3m0k1d.ru/d3m0k1d/HellreigN/backend/internal/storage"
+)
+
+type JobRepository struct {
+	DB *sql.DB
+}
+
+func NewJobRepository(db *sql.DB) *JobRepository {
+	return &JobRepository{DB: db}
+}
+
+func (r *JobRepository) Init(ctx context.Context) error {
+	_, err := r.DB.ExecContext(ctx, storage.CreateJobsTable)
+	return err
+}
+
+func (r *JobRepository) InitJob(ctx context.Context, agentID string, job models.JobForInsert) (int64, error) {
+	commandJSON, err := json.Marshal(job.Command)
+	if err != nil {
+		return 0, fmt.Errorf("marshal command: %w", err)
+	}
+
+	var stdinVal *string
+	if job.Stdin != nil {
+		stdinVal = job.Stdin
+	}
+
+	result, err := r.DB.ExecContext(ctx,
+		`INSERT INTO jobs (agent_id, command, stdin, stdout, stderr, status) VALUES (?, ?, ?, '', '', 0)`,
+		agentID, string(commandJSON), stdinVal,
+	)
+	if err != nil {
+		return 0, err
+	}
+
+	return result.LastInsertId()
+}
+
+func (r *JobRepository) UpdateJobInDB(ctx context.Context, jid int64, msg models.JobForUpdate) (models.Job, error) {
+	result, err := r.DB.ExecContext(ctx,
+		`UPDATE jobs SET stdout = ?, stderr = ?, status = ?, updated_at = CURRENT_TIMESTAMP WHERE id = ?`,
+		msg.Stdout, msg.Stderr, msg.Status, jid,
+	)
+	if err != nil {
+		return models.Job{}, err
+	}
+
+	affected, err := result.RowsAffected()
+	if err != nil {
+		return models.Job{}, err
+	}
+	if affected == 0 {
+		return models.Job{}, ErrNotFound
+	}
+
+	return r.GetJobByID(ctx, jid)
+}
+
+func (r *JobRepository) GetJobByID(ctx context.Context, jid int64) (models.Job, error) {
+	var job models.Job
+	var commandJSON string
+	var stdinVal *string
+
+	err := r.DB.QueryRowContext(ctx,
+		`SELECT id, command, stdin, stdout, stderr, status FROM jobs WHERE id = ?`,
+		jid,
+	).Scan(&job.ID, &commandJSON, &stdinVal, &job.Stdout, &job.Stderr, &job.Status)
+	if err != nil {
+		if err == sql.ErrNoRows {
+			return models.Job{}, ErrNotFound
+		}
+		return models.Job{}, err
+	}
+
+	if err := json.Unmarshal([]byte(commandJSON), &job.JobForInsert.Command); err != nil {
+		return models.Job{}, fmt.Errorf("unmarshal command: %w", err)
+	}
+
+	job.JobForInsert.Stdin = stdinVal
+	return job, nil
+}

backend/internal/storage/migrations.go

@@ -25,6 +25,20 @@ CREATE TABLE IF NOT EXISTS registration_tokens (
 );
 `
 
+const CreateJobsTable = `
+CREATE TABLE IF NOT EXISTS jobs (
+	id INTEGER PRIMARY KEY AUTOINCREMENT,
+	agent_id TEXT NOT NULL,
+	command TEXT NOT NULL,
+	stdin TEXT,
+	stdout TEXT DEFAULT '',
+	stderr TEXT DEFAULT '',
+	status INTEGER DEFAULT 0,
+	created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+	updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
+);
+`
+
 const CreateLogsTable = `
 CREATE TABLE IF NOT EXISTS logs (
     timestamp DateTime64(3) DEFAULT now(),