chunker and ui

core/chunker/models.py

@@ -0,0 +1,54 @@
+"""
+Internal data models for the chunker pipeline.
+
+These are pipeline-internal dataclasses, not schema models.
+Schema-level ChunkJob is in core/schema/models/jobs.py.
+
+Demonstrates: Core data structures (Interview Topic 5).
+"""
+
+from dataclasses import dataclass, field
+from typing import Any, Dict, List, Optional
+
+
+@dataclass
+class Chunk:
+    """A time-based segment of the source media file."""
+
+    sequence: int
+    start_time: float  # seconds
+    end_time: float  # seconds
+    source_path: str  # path to source file
+    duration: float  # end_time - start_time
+    checksum: str = ""  # computed after extraction
+
+
+@dataclass
+class ChunkResult:
+    """Result of processing a single chunk."""
+
+    sequence: int
+    success: bool
+    checksum_valid: bool = True
+    processing_time: float = 0.0
+    error: Optional[str] = None
+    retries: int = 0
+    worker_id: Optional[str] = None
+    output_file: Optional[str] = None
+
+
+@dataclass
+class PipelineResult:
+    """Aggregate result of the entire pipeline run."""
+
+    total_chunks: int = 0
+    processed: int = 0
+    failed: int = 0
+    retries: int = 0
+    elapsed_time: float = 0.0
+    throughput_mbps: float = 0.0
+    worker_stats: Dict[str, Any] = field(default_factory=dict)
+    errors: List[str] = field(default_factory=list)
+    chunks_in_order: bool = True
+    output_dir: Optional[str] = None
+    chunk_files: List[str] = field(default_factory=list)