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job.go
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job.go
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package store
import (
"fmt"
v1 "github.com/llm-operator/job-manager/api/v1"
"google.golang.org/protobuf/proto"
"gorm.io/gorm"
)
// JobState represents the state of a job.
type JobState string
const (
// JobStateQueued represents the pending state.
JobStateQueued JobState = "queued"
// JobStateRunning represents the running state.
JobStateRunning JobState = "running"
// JobStatusFailed represents the failed state.
JobStatusFailed JobState = "failed"
// JobStateSucceeded represents the succeeded state.
JobStateSucceeded JobState = "succeeded"
// JobStateCancelled represents the cancelled state.
JobStateCancelled JobState = "cancelled"
)
// Job represents a job.
type Job struct {
gorm.Model
JobID string `gorm:"uniqueIndex:idx_job_job_id"`
// Message is the marshaled proto message of v1.Job.
Message []byte
// Suffix is a string that will be added to a fine-tuned model name.
Suffix string
State JobState `gorm:"index:idx_job_state_tenant_id"`
TenantID string `gorm:"index:idx_job_state_tenant_id"`
// OutputModelID is the ID of a generated model.
OutputModelID string
Version int
}
// V1Job converts a job to v1.Job.
func (j *Job) V1Job() (*v1.Job, error) {
var jobProto v1.Job
err := proto.Unmarshal(j.Message, &jobProto)
if err != nil {
return nil, err
}
jobProto.Status = string(j.State)
return &jobProto, nil
}
// MutateMessage mutates the message field of a job.
func (j *Job) MutateMessage(mutateFn func(j *v1.Job)) error {
jobProto, err := j.V1Job()
if err != nil {
return err
}
mutateFn(jobProto)
msg, err := proto.Marshal(jobProto)
if err != nil {
return err
}
j.Message = msg
return nil
}
// CreateJob creates a new job.
func (s *S) CreateJob(job *Job) error {
if err := s.db.Create(job).Error; err != nil {
return err
}
return nil
}
// GetJobByJobID gets a job.
func (s *S) GetJobByJobID(jobID string) (*Job, error) {
var job Job
if err := s.db.Where("job_id = ?", jobID).Take(&job).Error; err != nil {
return nil, err
}
return &job, nil
}
// GetJobByJobIDAndTenantID gets a job by its job ID and tenant ID.
func (s *S) GetJobByJobIDAndTenantID(jobID, tenantID string) (*Job, error) {
var job Job
if err := s.db.Where("job_id = ? AND tenant_id = ?", jobID, tenantID).Take(&job).Error; err != nil {
return nil, err
}
return &job, nil
}
// ListQueuedJobs finds queued jobs.
func (s *S) ListQueuedJobs() ([]*Job, error) {
var jobs []*Job
if err := s.db.Where("state = ?", JobStateQueued).Order("job_id").Find(&jobs).Error; err != nil {
return nil, err
}
return jobs, nil
}
// ListQueuedJobsByTenantID finds queued jobs.
func (s *S) ListQueuedJobsByTenantID(tenantID string) ([]*Job, error) {
var jobs []*Job
if err := s.db.Where("tenant_id = ? AND state = ?", tenantID, JobStateQueued).Order("job_id").Find(&jobs).Error; err != nil {
return nil, err
}
return jobs, nil
}
// ListJobsByTenantID finds jobs.
func (s *S) ListJobsByTenantID(tenantID string) ([]*Job, error) {
var jobs []*Job
if err := s.db.Where("tenant_id = ?", tenantID).Find(&jobs).Error; err != nil {
return nil, err
}
return jobs, nil
}
// UpdateJobState updates a job.
func (s *S) UpdateJobState(jobID string, currentVersion int, newState JobState) error {
result := s.db.Model(&Job{}).
Where("job_id = ?", jobID).
Where("version = ?", currentVersion).
Updates(map[string]interface{}{
"state": newState,
"version": currentVersion + 1,
})
if err := result.Error; err != nil {
return err
}
if result.RowsAffected == 0 {
return fmt.Errorf("update job: %w", ErrConcurrentUpdate)
}
return nil
}
// UpdateJobStateAndMessage updates a job state and message.
func (s *S) UpdateJobStateAndMessage(jobID string, currentVersion int, newState JobState, message []byte) error {
result := s.db.Model(&Job{}).
Where("job_id = ?", jobID).
Where("version = ?", currentVersion).
Updates(map[string]interface{}{
"state": newState,
"message": message,
"version": currentVersion + 1,
})
if err := result.Error; err != nil {
return err
}
if result.RowsAffected == 0 {
return fmt.Errorf("update job: %w", ErrConcurrentUpdate)
}
return nil
}
// UpdateOutputModelID updates the output model ID.
func (s *S) UpdateOutputModelID(jobID string, currentVersion int, outputModelID string) error {
result := s.db.Model(&Job{}).
Where("job_id = ?", jobID).
Where("version = ?", currentVersion).
Updates(map[string]interface{}{
"output_model_id": outputModelID,
"version": currentVersion + 1,
})
if err := result.Error; err != nil {
return err
}
if result.RowsAffected == 0 {
return fmt.Errorf("update job: %w", ErrConcurrentUpdate)
}
return nil
}