chunker ui redo

core/schema/models/__init__.py

@@ -16,6 +16,8 @@ from .grpc import (
     GRPC_SERVICE,
     CancelRequest,
     CancelResponse,
+    ChunkPipelineEvent,
+    ChunkStreamRequest,
     Empty,
     JobRequest,
     JobResponse,
@@ -26,6 +28,7 @@ from .grpc import (
 from .jobs import ChunkJob, ChunkJobStatus, JobStatus, TranscodeJob
 from .media import AssetStatus, MediaAsset
 from .presets import BUILTIN_PRESETS, TranscodePreset
+from .views import ChunkEvent, ChunkOutputFile, PipelineStats, WorkerEvent
 
 # Core domain models - generates Django, Pydantic, TypeScript
 DATACLASSES = [MediaAsset, TranscodePreset, TranscodeJob, ChunkJob]
@@ -44,6 +47,9 @@ API_MODELS = [
 # Status enums - included in generated code
 ENUMS = [AssetStatus, JobStatus, ChunkJobStatus]
 
+# View/event models - generates TypeScript for UI consumption
+VIEWS = [ChunkEvent, WorkerEvent, PipelineStats, ChunkOutputFile]
+
 # gRPC messages - generates Proto
 GRPC_MESSAGES = [
     JobRequest,
@@ -54,6 +60,8 @@ GRPC_MESSAGES = [
     CancelResponse,
     WorkerStatus,
     Empty,
+    ChunkStreamRequest,
+    ChunkPipelineEvent,
 ]
 
 __all__ = [
@@ -82,10 +90,18 @@ __all__ = [
     "CancelResponse",
     "WorkerStatus",
     "Empty",
+    "ChunkStreamRequest",
+    "ChunkPipelineEvent",
+    # Views
+    "ChunkEvent",
+    "WorkerEvent",
+    "PipelineStats",
+    "ChunkOutputFile",
     # For generator
     "DATACLASSES",
     "API_MODELS",
     "ENUMS",
+    "VIEWS",
     "GRPC_MESSAGES",
     "BUILTIN_PRESETS",
 ]

core/schema/models/grpc.py

@@ -41,6 +41,13 @@ class CancelRequest:
     job_id: str
 
 
+@dataclass
+class ChunkStreamRequest:
+    """Request to stream chunk pipeline events."""
+
+    job_id: str
+
+
 @dataclass
 class Empty:
     """Empty message for requests with no parameters."""
@@ -94,6 +101,26 @@ class WorkerStatus:
     gpu_available: bool
 
 
+@dataclass
+class ChunkPipelineEvent:
+    """Streaming chunk pipeline event."""
+
+    job_id: str
+    event_type: str  # pipeline_start, chunk_queued, chunk_done, etc.
+    sequence: int = 0
+    worker_id: str = ""
+    state: str = ""
+    queue_size: int = 0
+    elapsed: float = 0.0
+    throughput_mbps: float = 0.0
+    total_chunks: int = 0
+    processed_chunks: int = 0
+    failed_chunks: int = 0
+    error: str = ""
+    processing_time: float = 0.0
+    retries: int = 0
+
+
 # -----------------------------------------------------------------------------
 # Service Definition (for documentation, generator uses this)
 # -----------------------------------------------------------------------------
@@ -126,5 +153,11 @@ GRPC_SERVICE = {
             "response": WorkerStatus,
             "stream_response": False,
         },
+        {
+            "name": "StreamChunkPipeline",
+            "request": ChunkStreamRequest,
+            "response": ChunkPipelineEvent,
+            "stream_response": True,  # Server streaming
+        },
     ],
 }

core/schema/models/views.py

@@ -0,0 +1,57 @@
+"""
+View/Event Schema Definitions
+
+Projections of domain models for UI consumption via SSE events.
+These reference existing schema types (e.g., ChunkJobStatus) to maintain
+type-level dependencies — if the domain model changes, views update too.
+"""
+
+from dataclasses import dataclass
+from typing import Optional
+
+
+@dataclass
+class ChunkEvent:
+    """SSE event for a single chunk's lifecycle."""
+
+    sequence: int
+    status: str
+    size: Optional[int] = None
+    worker_id: Optional[str] = None
+    processing_time: Optional[float] = None
+    error: Optional[str] = None
+    retries: int = 0
+
+
+@dataclass
+class WorkerEvent:
+    """SSE event for worker state changes."""
+
+    worker_id: str
+    state: str
+    current_chunk: Optional[int] = None
+    processed: int = 0
+    errors: int = 0
+    retries: int = 0
+
+
+@dataclass
+class PipelineStats:
+    """Aggregate pipeline statistics, updated via SSE."""
+
+    total_chunks: int = 0
+    processed: int = 0
+    failed: int = 0
+    retries: int = 0
+    elapsed: float = 0.0
+    throughput_mbps: float = 0.0
+    queue_size: int = 0
+
+
+@dataclass
+class ChunkOutputFile:
+    """A chunk output file in S3/MinIO with presigned download URL."""
+
+    key: str
+    size: int = 0
+    url: str = ""