|
| 1 | +package coordinator |
| 2 | + |
| 3 | +import ( |
| 4 | + "context" |
| 5 | + "strings" |
| 6 | + "time" |
| 7 | + |
| 8 | + "github.com/chroma-core/chroma/go/pkg/common" |
| 9 | + "github.com/chroma-core/chroma/go/pkg/proto/coordinatorpb" |
| 10 | + "github.com/chroma-core/chroma/go/pkg/sysdb/metastore/db/dbmodel" |
| 11 | + "github.com/google/uuid" |
| 12 | + "github.com/pingcap/log" |
| 13 | + "go.uber.org/zap" |
| 14 | + "google.golang.org/protobuf/proto" |
| 15 | +) |
| 16 | + |
| 17 | +// CreateTask creates a new task in the database |
| 18 | +func (s *Coordinator) CreateTask(ctx context.Context, req *coordinatorpb.CreateTaskRequest) (*coordinatorpb.CreateTaskResponse, error) { |
| 19 | + // Validate task name doesn't start with soft-deletion reserved prefix |
| 20 | + if strings.HasPrefix(req.Name, "_deleted_") { |
| 21 | + log.Error("CreateTask: task name cannot start with _deleted_") |
| 22 | + return nil, common.ErrInvalidTaskName |
| 23 | + } |
| 24 | + |
| 25 | + var taskID uuid.UUID |
| 26 | + |
| 27 | + // Execute all database operations in a transaction |
| 28 | + err := s.catalog.txImpl.Transaction(ctx, func(txCtx context.Context) error { |
| 29 | + // Check if task already exists |
| 30 | + existingTask, err := s.catalog.metaDomain.TaskDb(txCtx).GetByName(req.InputCollectionId, req.Name) |
| 31 | + if err != nil { |
| 32 | + log.Error("CreateTask: failed to check task", zap.Error(err)) |
| 33 | + return err |
| 34 | + } |
| 35 | + if existingTask != nil { |
| 36 | + log.Info("CreateTask: task already exists, returning existing") |
| 37 | + taskID = existingTask.ID |
| 38 | + return nil |
| 39 | + } |
| 40 | + |
| 41 | + // Generate new task UUID |
| 42 | + taskID = uuid.New() |
| 43 | + outputCollectionName := req.OutputCollectionName |
| 44 | + |
| 45 | + // Look up database_id from databases table using database name and tenant |
| 46 | + databases, err := s.catalog.metaDomain.DatabaseDb(txCtx).GetDatabases(req.TenantId, req.Database) |
| 47 | + if err != nil { |
| 48 | + log.Error("CreateTask: failed to get database", zap.Error(err)) |
| 49 | + return err |
| 50 | + } |
| 51 | + if len(databases) == 0 { |
| 52 | + log.Error("CreateTask: database not found") |
| 53 | + return common.ErrDatabaseNotFound |
| 54 | + } |
| 55 | + |
| 56 | + // Look up operator by name from the operators table |
| 57 | + operator, err := s.catalog.metaDomain.OperatorDb(txCtx).GetByName(req.OperatorName) |
| 58 | + if err != nil { |
| 59 | + log.Error("CreateTask: failed to get operator", zap.Error(err)) |
| 60 | + return err |
| 61 | + } |
| 62 | + if operator == nil { |
| 63 | + log.Error("CreateTask: operator not found", zap.String("operator_name", req.OperatorName)) |
| 64 | + return common.ErrOperatorNotFound |
| 65 | + } |
| 66 | + operatorID := operator.OperatorID |
| 67 | + |
| 68 | + // Generate UUIDv7 for time-ordered nonce |
| 69 | + nextNonce, err := uuid.NewV7() |
| 70 | + if err != nil { |
| 71 | + return err |
| 72 | + } |
| 73 | + |
| 74 | + // TODO(tanujnay112): Can combine the two collection checks into one |
| 75 | + // Check if input collection exists |
| 76 | + collections, err := s.catalog.metaDomain.CollectionDb(txCtx).GetCollections([]string{req.InputCollectionId}, nil, req.TenantId, req.Database, nil, nil, false) |
| 77 | + if err != nil { |
| 78 | + log.Error("CreateTask: failed to get input collection", zap.Error(err)) |
| 79 | + return err |
| 80 | + } |
| 81 | + if len(collections) == 0 { |
| 82 | + log.Error("CreateTask: input collection not found") |
| 83 | + return common.ErrCollectionNotFound |
| 84 | + } |
| 85 | + |
| 86 | + // Check if output collection already exists |
| 87 | + existingOutputCollections, err := s.catalog.metaDomain.CollectionDb(txCtx).GetCollections(nil, &outputCollectionName, req.TenantId, req.Database, nil, nil, false) |
| 88 | + if err != nil { |
| 89 | + log.Error("CreateTask: failed to check output collection", zap.Error(err)) |
| 90 | + return err |
| 91 | + } |
| 92 | + if len(existingOutputCollections) > 0 { |
| 93 | + log.Error("CreateTask: output collection already exists") |
| 94 | + return common.ErrCollectionUniqueConstraintViolation |
| 95 | + } |
| 96 | + |
| 97 | + now := time.Now() |
| 98 | + task := &dbmodel.Task{ |
| 99 | + ID: taskID, |
| 100 | + Name: req.Name, |
| 101 | + TenantID: req.TenantId, |
| 102 | + DatabaseID: databases[0].ID, |
| 103 | + InputCollectionID: req.InputCollectionId, |
| 104 | + OutputCollectionName: req.OutputCollectionName, |
| 105 | + OperatorID: operatorID, |
| 106 | + OperatorParams: req.Params, |
| 107 | + CompletionOffset: 0, |
| 108 | + LastRun: nil, |
| 109 | + NextRun: nil, // Will be set to zero initially, scheduled by task scheduler |
| 110 | + MinRecordsForTask: int64(req.MinRecordsForTask), |
| 111 | + CurrentAttempts: 0, |
| 112 | + CreatedAt: now, |
| 113 | + UpdatedAt: now, |
| 114 | + NextNonce: nextNonce, |
| 115 | + OldestWrittenNonce: nil, |
| 116 | + } |
| 117 | + |
| 118 | + // Try to insert task into database |
| 119 | + err = s.catalog.metaDomain.TaskDb(txCtx).Insert(task) |
| 120 | + if err != nil { |
| 121 | + // Check if it's a unique constraint violation (concurrent creation) |
| 122 | + if err == common.ErrTaskAlreadyExists { |
| 123 | + log.Error("CreateTask: task already exists") |
| 124 | + return common.ErrTaskAlreadyExists |
| 125 | + } |
| 126 | + log.Error("CreateTask: failed to insert task", zap.Error(err)) |
| 127 | + return err |
| 128 | + } |
| 129 | + |
| 130 | + log.Info("Task created successfully", zap.String("task_id", taskID.String()), zap.String("name", req.Name), zap.String("output_collection_name", outputCollectionName)) |
| 131 | + return nil |
| 132 | + }) |
| 133 | + |
| 134 | + if err != nil { |
| 135 | + return nil, err |
| 136 | + } |
| 137 | + |
| 138 | + return &coordinatorpb.CreateTaskResponse{ |
| 139 | + TaskId: taskID.String(), |
| 140 | + }, nil |
| 141 | +} |
| 142 | + |
| 143 | +// GetTaskByName retrieves a task by name from the database |
| 144 | +func (s *Coordinator) GetTaskByName(ctx context.Context, req *coordinatorpb.GetTaskByNameRequest) (*coordinatorpb.GetTaskByNameResponse, error) { |
| 145 | + // Can do both calls with a JOIN |
| 146 | + task, err := s.catalog.metaDomain.TaskDb(ctx).GetByName(req.InputCollectionId, req.TaskName) |
| 147 | + if err != nil { |
| 148 | + return nil, err |
| 149 | + } |
| 150 | + |
| 151 | + // If task not found, return empty response |
| 152 | + if task == nil { |
| 153 | + return nil, common.ErrTaskNotFound |
| 154 | + } |
| 155 | + |
| 156 | + // Look up operator name from operators table |
| 157 | + operator, err := s.catalog.metaDomain.OperatorDb(ctx).GetByID(task.OperatorID) |
| 158 | + if err != nil { |
| 159 | + log.Error("GetTaskByName: failed to get operator", zap.Error(err)) |
| 160 | + return nil, err |
| 161 | + } |
| 162 | + if operator == nil { |
| 163 | + log.Error("GetTaskByName: operator not found", zap.String("operator_id", task.OperatorID.String())) |
| 164 | + return nil, common.ErrOperatorNotFound |
| 165 | + } |
| 166 | + |
| 167 | + // Debug logging |
| 168 | + log.Info("Found task", zap.String("task_id", task.ID.String()), zap.String("name", task.Name), zap.String("input_collection_id", task.InputCollectionID), zap.String("output_collection_name", task.OutputCollectionName)) |
| 169 | + |
| 170 | + // Convert task to response |
| 171 | + return &coordinatorpb.GetTaskByNameResponse{ |
| 172 | + TaskId: proto.String(task.ID.String()), |
| 173 | + Name: proto.String(task.Name), |
| 174 | + OperatorName: proto.String(operator.OperatorName), |
| 175 | + InputCollectionId: proto.String(task.InputCollectionID), |
| 176 | + OutputCollectionName: proto.String(task.OutputCollectionName), |
| 177 | + Params: proto.String(task.OperatorParams), |
| 178 | + CompletionOffset: proto.Int64(task.CompletionOffset), |
| 179 | + MinRecordsForTask: proto.Uint64(uint64(task.MinRecordsForTask)), |
| 180 | + }, nil |
| 181 | +} |
| 182 | + |
| 183 | +// DeleteTask soft deletes a task by name |
| 184 | +func (s *Coordinator) DeleteTask(ctx context.Context, req *coordinatorpb.DeleteTaskRequest) (*coordinatorpb.DeleteTaskResponse, error) { |
| 185 | + err := s.catalog.metaDomain.TaskDb(ctx).SoftDelete(req.InputCollectionId, req.TaskName) |
| 186 | + if err != nil { |
| 187 | + log.Error("DeleteTask failed", zap.Error(err)) |
| 188 | + return nil, err |
| 189 | + } |
| 190 | + |
| 191 | + log.Info("Task deleted", zap.String("input_collection_id", req.InputCollectionId), zap.String("task_name", req.TaskName)) |
| 192 | + |
| 193 | + return &coordinatorpb.DeleteTaskResponse{ |
| 194 | + Success: true, |
| 195 | + }, nil |
| 196 | +} |
| 197 | + |
| 198 | +// GetOperators retrieves all operators from the database |
| 199 | +func (s *Coordinator) GetOperators(ctx context.Context, req *coordinatorpb.GetOperatorsRequest) (*coordinatorpb.GetOperatorsResponse, error) { |
| 200 | + operators, err := s.catalog.metaDomain.OperatorDb(ctx).GetAll() |
| 201 | + if err != nil { |
| 202 | + log.Error("GetOperators failed", zap.Error(err)) |
| 203 | + return nil, err |
| 204 | + } |
| 205 | + |
| 206 | + // Convert to proto response |
| 207 | + protoOperators := make([]*coordinatorpb.Operator, len(operators)) |
| 208 | + for i, op := range operators { |
| 209 | + protoOperators[i] = &coordinatorpb.Operator{ |
| 210 | + Id: op.OperatorID.String(), |
| 211 | + Name: op.OperatorName, |
| 212 | + } |
| 213 | + } |
| 214 | + |
| 215 | + log.Info("GetOperators succeeded", zap.Int("count", len(operators))) |
| 216 | + |
| 217 | + return &coordinatorpb.GetOperatorsResponse{ |
| 218 | + Operators: protoOperators, |
| 219 | + }, nil |
| 220 | +} |
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