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scripts/tools/download_wandb_project.py

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+from pathlib import Path
+from concurrent.futures import ThreadPoolExecutor, as_completed
+import threading
+import wandb
+import argparse
+
+# tune these depending on network / W&B limits
+MAX_RUN_WORKERS = 8
+MAX_FILE_WORKERS = 16
+MAX_ARTIFACT_WORKERS = 8
+
+api = wandb.Api()
+
+print_lock = threading.Lock()
+
+
+def safe_print(*args, **kwargs):
+    with print_lock:
+        print(*args, **kwargs)
+
+
+def download_file(file, run_dir):
+    target = run_dir / file.name
+
+    try:
+        # skip existing files
+        if target.exists():
+            return f"SKIP FILE {target}"
+
+        target.parent.mkdir(parents=True, exist_ok=True)
+
+        file.download(root=run_dir, replace=False)
+
+        return f"DONE FILE {target}"
+
+    except Exception as e:
+        return f"FAIL FILE {target}: {e}"
+
+
+def sanitize_artifact_name(name: str):
+    return name.replace(":", "_")
+
+
+def download_artifact(artifact, artifact_root):
+    try:
+        artifact_name = sanitize_artifact_name(artifact.name)
+        artifact_dir = artifact_root / artifact_name
+
+        if artifact_dir.exists() and any(artifact_dir.iterdir()):
+            return f"SKIP ARTIFACT {artifact.name}"
+
+        artifact_dir.mkdir(parents=True, exist_ok=True)
+
+        artifact.download(root=artifact_dir)
+
+        return f"DONE ARTIFACT {artifact.name}"
+
+    except Exception as e:
+        return f"FAIL ARTIFACT {artifact.name}: {e}"
+
+
+def download_run(run, root):
+    run_dir = root / f"{run.name}"
+    run_dir.mkdir(parents=True, exist_ok=True)
+
+    safe_print(f"\n=== {run.name} ({run.id}) ===")
+
+    # -------------------------
+    # Download regular run files
+    # -------------------------
+    files = list(run.files())
+
+    with ThreadPoolExecutor(max_workers=MAX_FILE_WORKERS) as executor:
+        futures = [executor.submit(download_file, file, run_dir) for file in files]
+
+        for future in as_completed(futures):
+            safe_print(future.result())
+
+    # -------------------------
+    # Download logged artifacts
+    # -------------------------
+    artifact_root = run_dir / "artifacts"
+
+    try:
+        artifacts = list(run.logged_artifacts())
+        safe_print(f"Found {len(artifacts)} artifacts for {run.name}")
+
+        with ThreadPoolExecutor(max_workers=MAX_ARTIFACT_WORKERS) as executor:
+            futures = [
+                executor.submit(download_artifact, artifact, artifact_root)
+                for artifact in artifacts
+            ]
+
+            for future in as_completed(futures):
+                safe_print(future.result())
+
+    except Exception as e:
+        safe_print(f"Artifact download failed for {run.name}: {e}")
+
+    # -------------------------
+    # OPTIONAL: download used/input artifacts
+    # -------------------------
+    # try:
+    #     used_artifacts = list(run.used_artifacts())
+    #     used_root = run_dir / "used_artifacts"
+    #
+    #     for artifact in used_artifacts:
+    #         download_artifact(artifact, used_root)
+    # except Exception as e:
+    #     safe_print(f"Used artifact download failed: {e}")
+
+    safe_print(f"Finished {run.name}")
+
+
+def main(entity: str, project: str, root: Path):
+    root.mkdir(exist_ok=True)
+
+    runs = list(api.runs(f"{entity}/{project}"))
+
+    safe_print(f"Found {len(runs)} runs")
+
+    with ThreadPoolExecutor(max_workers=MAX_RUN_WORKERS) as executor:
+        futures = [executor.submit(download_run, run, root) for run in runs]
+
+        for future in as_completed(futures):
+            try:
+                future.result()
+            except Exception as e:
+                safe_print("RUN FAILED:", e)
+
+    safe_print("\nAll downloads complete.")
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--entity", type=str, default="SEL3-2026-Groep-4")
+    parser.add_argument("--project", type=str, required=True)
+    parser.add_argument("--root", type=str, default="runs")
+    args = parser.parse_args()
+
+    root = Path(args.root)
+    main(entity=args.entity, project=args.project, root=root)