Create blenderrestarteraftercrashing.py

Rip Princess Diana

blenderrestarteraftercrashing.py

@@ -0,0 +1,93 @@
+#!/usr/bin/env python3
+"""
+Watch-dog that restarts Blender until every entry in metadata.json
+is "rendered": true.  Now hardened against path-quoting issues and
+third-party add-ons crashing on start-up.
+"""
+
+import json, os, subprocess, sys, tempfile, time
+from pathlib import Path
+import textwrap, json as _json  # for safe string literal
+
+# ─────────────────────────── USER SETTINGS ────────────────────────────
+BLENDER_EXE = r"C:\Program Files\Blender Foundation\Blender 3.6\blender.exe"
+BLEND_FILE  = r"C:\Users\youruser\Desktop\birdge.blend"
+JOB_SCRIPT  = r"C:\Users\youruser\Desktop\birdge.py"
+
+OUTPUT_DIR  = r"C:\Users\Rhoady\Desktop\pet projects\relcams40"
+META_PATH   = Path(OUTPUT_DIR) / "metadata.json"
+
+CRASH_SLEEP = 5.0        # seconds between retries
+# ───────────────────────────────────────────────────────────────────────
+
+# ----------------------------------------------------------------------
+def all_frames_done(meta_file: Path) -> bool:
+    if not meta_file.exists():
+        return False
+    with meta_file.open("r") as fh:
+        return all(m.get("rendered") for m in json.load(fh))
+
+# ----------------------------------------------------------------------
+def make_wrapper() -> Path:
+    wrapper = Path(tempfile.gettempdir()) / "run_render_job_once.py"
+
+    safe_job  = _json.dumps(JOB_SCRIPT)          # proper quoting
+    safe_json = _json.dumps(str(META_PATH))      # ← new
+
+    wrapper.write_text(textwrap.dedent(f"""
+        import importlib.util, types, pathlib, sys, os
+
+        # ---- import the render job script ----------------------------------
+        job_path = pathlib.Path({safe_job})
+        spec = importlib.util.spec_from_file_location("job", job_path)
+        if spec and spec.loader:
+            job = importlib.util.module_from_spec(spec)
+            spec.loader.exec_module(job)
+        else:                                  # very old Python fallback
+            job = types.ModuleType("job")
+            exec(job_path.read_text(), job.__dict__)
+        sys.modules["job"] = job
+
+        # ---- pick fresh vs. resume ----------------------------------------
+        meta_path = pathlib.Path({safe_json})
+        job.NEW_PHOTOS = not meta_path.exists()    # True on first run only
+        print(f"[WRAPPER] NEW_PHOTOS = {{job.NEW_PHOTOS}}")
+
+        job.main()
+    """))
+
+    return wrapper
+
+# ----------------------------------------------------------------------
+def launch_blender(wrapper: Path) -> int:
+    cmd = [
+        BLENDER_EXE,
+        "--factory-startup",          # <-- disables all add-ons
+        "-b", BLEND_FILE,
+        "--python", str(wrapper)
+    ]
+    return subprocess.run(cmd).returncode
+
+# ----------------------------------------------------------------------
+def main():
+    print("▶  Blender render watchdog started.")
+    wrapper = make_wrapper()
+
+    while True:
+        if all_frames_done(META_PATH):
+            print("✓  All frames already rendered – nothing to do. Exiting.")
+            return
+
+        print("→ Launching Blender …")
+        rc = launch_blender(wrapper)
+
+        if rc == 0 and all_frames_done(META_PATH):
+            print("✓  Job completed on this pass. Exiting.")
+            return
+
+        print(f"⚠  Blender exited (code {rc}). Will retry in {CRASH_SLEEP}s …")
+        time.sleep(CRASH_SLEEP)
+
+# ----------------------------------------------------------------------
+if __name__ == "__main__":
+    main()