feat: add worker distributor and model registry

internal/workscheduler/repositories/db.go

@@ -0,0 +1,32 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.23.0
+
+package repositories
+
+import (
+	"context"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgconn"
+)
+
+type DBTX interface {
+	Exec(context.Context, string, ...interface{}) (pgconn.CommandTag, error)
+	Query(context.Context, string, ...interface{}) (pgx.Rows, error)
+	QueryRow(context.Context, string, ...interface{}) pgx.Row
+}
+
+func New(db DBTX) *Queries {
+	return &Queries{db: db}
+}
+
+type Queries struct {
+	db DBTX
+}
+
+func (q *Queries) WithTx(tx pgx.Tx) *Queries {
+	return &Queries{
+		db: tx,
+	}
+}

internal/workscheduler/repositories/models.go

@@ -0,0 +1,30 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.23.0
+
+package repositories
+
+import (
+	"github.com/google/uuid"
+	"github.com/jackc/pgx/v5/pgtype"
+)
+
+type ModelSchedule struct {
+	ModelName string             `json:"model_name"`
+	LastRun   pgtype.Timestamptz `json:"last_run"`
+}
+
+type WorkSchedule struct {
+	ScheduleID uuid.UUID          `json:"schedule_id"`
+	WorkerID   uuid.UUID          `json:"worker_id"`
+	StartRun   pgtype.Timestamptz `json:"start_run"`
+	EndRun     pgtype.Timestamptz `json:"end_run"`
+	UpdatedAt  pgtype.Timestamptz `json:"updated_at"`
+	State      string             `json:"state"`
+}
+
+type WorkerRegister struct {
+	WorkerID  uuid.UUID          `json:"worker_id"`
+	Capacity  int32              `json:"capacity"`
+	HeartBeat pgtype.Timestamptz `json:"heart_beat"`
+}

internal/workscheduler/repositories/querier.go

@@ -0,0 +1,22 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.23.0
+
+package repositories
+
+import (
+	"context"
+
+	"github.com/google/uuid"
+)
+
+type Querier interface {
+	Archive(ctx context.Context, scheduleID uuid.UUID) error
+	GetCurrentQueueSize(ctx context.Context, workerID uuid.UUID) (int64, error)
+	GetNext(ctx context.Context, workerID uuid.UUID) (*WorkSchedule, error)
+	InsertQueueItem(ctx context.Context, arg *InsertQueueItemParams) error
+	Ping(ctx context.Context) (int32, error)
+	StartProcessing(ctx context.Context, scheduleID uuid.UUID) error
+}
+
+var _ Querier = (*Queries)(nil)

internal/workscheduler/repositories/queries.sql.go

@@ -0,0 +1,129 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.23.0
+// source: queries.sql
+
+package repositories
+
+import (
+	"context"
+
+	"github.com/google/uuid"
+	"github.com/jackc/pgx/v5/pgtype"
+)
+
+const archive = `-- name: Archive :exec
+UPDATE work_schedule
+SET
+    state = 'archived'
+WHERE
+    schedule_id = $1
+`
+
+func (q *Queries) Archive(ctx context.Context, scheduleID uuid.UUID) error {
+	_, err := q.db.Exec(ctx, archive, scheduleID)
+	return err
+}
+
+const getCurrentQueueSize = `-- name: GetCurrentQueueSize :one
+SELECT 
+    COUNT(*) current_queue_size
+FROM
+    work_schedule
+WHERE
+        worker_id = $1
+    AND state <> 'archived'
+`
+
+func (q *Queries) GetCurrentQueueSize(ctx context.Context, workerID uuid.UUID) (int64, error) {
+	row := q.db.QueryRow(ctx, getCurrentQueueSize, workerID)
+	var current_queue_size int64
+	err := row.Scan(&current_queue_size)
+	return current_queue_size, err
+}
+
+const getNext = `-- name: GetNext :one
+SELECT 
+    schedule_id, worker_id, start_run, end_run, updated_at, state
+FROM 
+    work_schedule
+WHERE
+        worker_id = $1
+    AND state = 'pending'
+ORDER BY updated_at DESC
+LIMIT 1
+`
+
+func (q *Queries) GetNext(ctx context.Context, workerID uuid.UUID) (*WorkSchedule, error) {
+	row := q.db.QueryRow(ctx, getNext, workerID)
+	var i WorkSchedule
+	err := row.Scan(
+		&i.ScheduleID,
+		&i.WorkerID,
+		&i.StartRun,
+		&i.EndRun,
+		&i.UpdatedAt,
+		&i.State,
+	)
+	return &i, err
+}
+
+const insertQueueItem = `-- name: InsertQueueItem :exec
+INSERT INTO work_schedule
+    (
+          schedule_id
+        , worker_id
+        , start_run
+        , end_run
+        , state
+    )
+VALUES
+    (
+          $1
+        , $2
+        , $3
+        , $4
+        , 'pending'
+    )
+`
+
+type InsertQueueItemParams struct {
+	ScheduleID uuid.UUID          `json:"schedule_id"`
+	WorkerID   uuid.UUID          `json:"worker_id"`
+	StartRun   pgtype.Timestamptz `json:"start_run"`
+	EndRun     pgtype.Timestamptz `json:"end_run"`
+}
+
+func (q *Queries) InsertQueueItem(ctx context.Context, arg *InsertQueueItemParams) error {
+	_, err := q.db.Exec(ctx, insertQueueItem,
+		arg.ScheduleID,
+		arg.WorkerID,
+		arg.StartRun,
+		arg.EndRun,
+	)
+	return err
+}
+
+const ping = `-- name: Ping :one
+SELECT 1
+`
+
+func (q *Queries) Ping(ctx context.Context) (int32, error) {
+	row := q.db.QueryRow(ctx, ping)
+	var column_1 int32
+	err := row.Scan(&column_1)
+	return column_1, err
+}
+
+const startProcessing = `-- name: StartProcessing :exec
+UPDATE work_schedule
+SET
+    state = 'processing'
+WHERE
+    schedule_id = $1
+`
+
+func (q *Queries) StartProcessing(ctx context.Context, scheduleID uuid.UUID) error {
+	_, err := q.db.Exec(ctx, startProcessing, scheduleID)
+	return err
+}