Add trace_agg/src/trace_agg/cli.py
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trace_agg/src/trace_agg/cli.py
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62
trace_agg/src/trace_agg/cli.py
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import argparse
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import json
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import sys
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from pathlib import Path
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from typing import Any
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from trace_agg import core
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def _validate_file_path(path_str: str, must_exist: bool = True) -> Path:
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path = Path(path_str)
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if must_exist and not path.is_file():
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raise FileNotFoundError(f"Eingabedatei nicht gefunden: {path}")
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return path
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def main() -> None:
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"""CLI-Einstiegspunkt zur Aggregation von eBPF-Tracedaten."""
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parser = argparse.ArgumentParser(
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description="Aggregiere eBPF-Tracedaten pro correlation_id und speichere eine zusammengefasste JSON-Ausgabe."
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)
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parser.add_argument(
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"--input",
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required=True,
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help="Pfad zur Eingabedatei mit Tracedaten im JSON-Format."
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)
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parser.add_argument(
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"--output",
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required=True,
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help="Pfad zur Ausgabedatei für das aggregierte JSON."
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)
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args = parser.parse_args()
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try:
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input_path = _validate_file_path(args.input)
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output_path = Path(args.output)
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with input_path.open("r", encoding="utf-8") as f:
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trace_data = json.load(f)
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correlation_ids = trace_data.keys() if isinstance(trace_data, dict) else []
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if not correlation_ids:
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raise ValueError("Keine Correlation-IDs in der Eingabedatei gefunden.")
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aggregated_results: dict[str, Any] = {}
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for cid in correlation_ids:
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aggregated_results[cid] = core.aggregate_trace_data(cid)
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output_path.parent.mkdir(parents=True, exist_ok=True)
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with output_path.open("w", encoding="utf-8") as out:
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json.dump(aggregated_results, out, indent=2)
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print(f"Aggregierte Ergebnisse gespeichert in: {output_path}")
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except Exception as exc:
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print(f"Fehler bei der Ausführung: {exc}", file=sys.stderr)
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sys.exit(1)
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if __name__ == "__main__":
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main()
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