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6343479 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 | """Provider-Independent Backup Interface for FlyBrain V8/V9.
Implements Sections 64–67:
Abstract Base Class `BackupProvider` with:
- LocalFilesystemProvider
- LocalArchiveProvider (.tar.gz / .zip)
- HuggingFaceStorageBucketProvider (HF Hub API storage)
"""
import os
import io
import json
import shutil
import zipfile
import hashlib
from abc import ABC, abstractmethod
from typing import Dict, Any, List, Optional, BinaryIO
class BackupProvider(ABC):
@abstractmethod
def save_backup(self, backup_name: str, files: Dict[str, bytes], manifest: Dict[str, Any]) -> Dict[str, Any]:
"""Saves backup files and manifest to target storage."""
pass
@abstractmethod
def load_backup(self, backup_name: str) -> Dict[str, bytes]:
"""Loads all backup files and manifest into memory."""
pass
@abstractmethod
def list_backups(self) -> List[Dict[str, Any]]:
"""Lists available backups with metadata."""
pass
@abstractmethod
def verify_backup(self, backup_name: str) -> Dict[str, Any]:
"""Cryptographically verifies files in the backup against the manifest."""
pass
class LocalFilesystemProvider(BackupProvider):
def __init__(self, root_dir: str = "backups"):
self.root = os.path.abspath(root_dir)
os.makedirs(self.root, exist_ok=True)
def _dir_for(self, backup_name: str) -> str:
return os.path.join(self.root, backup_name)
def save_backup(self, backup_name: str, files: Dict[str, bytes], manifest: Dict[str, Any]) -> Dict[str, Any]:
bdir = self._dir_for(backup_name)
if os.path.exists(bdir):
raise FileExistsError(f"Backup '{backup_name}' already exists.")
os.makedirs(bdir, exist_ok=True)
stored_hashes = {}
for fname, data in files.items():
fpath = os.path.join(bdir, fname)
os.makedirs(os.path.dirname(fpath), exist_ok=True)
with open(fpath, "wb") as f:
f.write(data)
stored_hashes[fname] = hashlib.sha256(data).hexdigest()
manifest["files"] = stored_hashes
mpath = os.path.join(bdir, "manifest.json")
with open(mpath, "w", encoding="utf-8") as f:
json.dump(manifest, f, indent=2, sort_keys=True)
return {"backup": backup_name, "provider": "LocalFilesystem", "path": bdir, "file_count": len(files) + 1}
def load_backup(self, backup_name: str) -> Dict[str, bytes]:
bdir = self._dir_for(backup_name)
if not os.path.isdir(bdir):
raise FileNotFoundError(f"Backup '{backup_name}' not found at {bdir}")
result = {}
for root, _, fnames in os.walk(bdir):
for fn in fnames:
fpath = os.path.join(root, fn)
rel = os.path.relpath(fpath, bdir).replace("\\", "/")
with open(fpath, "rb") as f:
result[rel] = f.read()
return result
def list_backups(self) -> List[Dict[str, Any]]:
out = []
if not os.path.isdir(self.root):
return out
for name in sorted(os.listdir(self.root)):
bdir = os.path.join(self.root, name)
mpath = os.path.join(bdir, "manifest.json")
if os.path.isdir(bdir) and os.path.exists(mpath):
try:
with open(mpath, "r", encoding="utf-8") as f:
man = json.load(f)
out.append({
"name": name,
"created_at": man.get("created_at"),
"state_hash": man.get("state_hash"),
"trigger": man.get("trigger"),
"schema_version": man.get("schema_version")
})
except Exception:
out.append({"name": name, "error": "corrupt_manifest"})
return out
def verify_backup(self, backup_name: str) -> Dict[str, Any]:
bdir = self._dir_for(backup_name)
mpath = os.path.join(bdir, "manifest.json")
if not os.path.exists(mpath):
return {"status": "CORRUPT", "reason": "Missing manifest.json"}
with open(mpath, "r", encoding="utf-8") as f:
manifest = json.load(f)
per_file = {}
all_ok = True
for fname, expected_hash in manifest.get("files", {}).items():
fpath = os.path.join(bdir, fname)
if not os.path.exists(fpath):
per_file[fname] = "MISSING"
all_ok = False
else:
with open(fpath, "rb") as f:
actual = hashlib.sha256(f.read()).hexdigest()
if actual == expected_hash:
per_file[fname] = "OK"
else:
per_file[fname] = "HASH_MISMATCH"
all_ok = False
return {
"backup": backup_name,
"status": "VALID" if all_ok else "CORRUPT",
"files": per_file,
"provider": "LocalFilesystem"
}
class LocalArchiveProvider(BackupProvider):
"""Zip-compressed portable backup archive provider."""
def __init__(self, archive_dir: str = "backups/archives"):
self.archive_dir = os.path.abspath(archive_dir)
os.makedirs(self.archive_dir, exist_ok=True)
def _path_for(self, backup_name: str) -> str:
return os.path.join(self.archive_dir, f"{backup_name}.zip")
def save_backup(self, backup_name: str, files: Dict[str, bytes], manifest: Dict[str, Any]) -> Dict[str, Any]:
zpath = self._path_for(backup_name)
if os.path.exists(zpath):
raise FileExistsError(f"Archive '{backup_name}.zip' already exists.")
stored_hashes = {fn: hashlib.sha256(b).hexdigest() for fn, b in files.items()}
manifest["files"] = stored_hashes
manifest_bytes = json.dumps(manifest, indent=2, sort_keys=True).encode("utf-8")
with zipfile.ZipFile(zpath, "w", compression=zipfile.ZIP_DEFLATED) as z:
z.writestr("manifest.json", manifest_bytes)
for fname, data in files.items():
z.writestr(fname, data)
return {"backup": backup_name, "provider": "LocalArchive", "path": zpath, "bytes": os.path.getsize(zpath)}
def load_backup(self, backup_name: str) -> Dict[str, bytes]:
zpath = self._path_for(backup_name)
if not os.path.exists(zpath):
raise FileNotFoundError(f"Archive '{backup_name}.zip' not found.")
result = {}
with zipfile.ZipFile(zpath, "r") as z:
for name in z.namelist():
result[name] = z.read(name)
return result
def list_backups(self) -> List[Dict[str, Any]]:
out = []
if not os.path.isdir(self.archive_dir):
return out
for fn in sorted(os.listdir(self.archive_dir)):
if fn.endswith(".zip"):
bname = fn[:-4]
try:
with zipfile.ZipFile(os.path.join(self.archive_dir, fn), "r") as z:
man = json.loads(z.read("manifest.json").decode("utf-8"))
out.append({
"name": bname,
"created_at": man.get("created_at"),
"state_hash": man.get("state_hash"),
"trigger": man.get("trigger"),
"size_bytes": os.path.getsize(os.path.join(self.archive_dir, fn))
})
except Exception:
out.append({"name": bname, "error": "corrupt_archive"})
return out
def verify_backup(self, backup_name: str) -> Dict[str, Any]:
zpath = self._path_for(backup_name)
if not os.path.exists(zpath):
return {"status": "CORRUPT", "reason": "Archive file missing"}
try:
with zipfile.ZipFile(zpath, "r") as z:
manifest = json.loads(z.read("manifest.json").decode("utf-8"))
per_file = {}
all_ok = True
for fname, exp in manifest.get("files", {}).items():
if fname not in z.namelist():
per_file[fname] = "MISSING"
all_ok = False
else:
actual = hashlib.sha256(z.read(fname)).hexdigest()
if actual == exp:
per_file[fname] = "OK"
else:
per_file[fname] = "HASH_MISMATCH"
all_ok = False
return {"backup": backup_name, "status": "VALID" if all_ok else "CORRUPT", "files": per_file, "provider": "LocalArchive"}
except Exception as e:
return {"backup": backup_name, "status": "CORRUPT", "reason": str(e), "provider": "LocalArchive"}
class HuggingFaceStorageBucketProvider(BackupProvider):
"""Hugging Face Hub API Remote Storage Bucket provider."""
def __init__(self, space_id: str = "timfromhcs/FlyBrain-Lab", token: Optional[str] = None):
self.space_id = space_id
self.token = token or os.environ.get("HF_TOKEN")
def save_backup(self, backup_name: str, files: Dict[str, bytes], manifest: Dict[str, Any]) -> Dict[str, Any]:
if not self.token:
return {"status": "BLOCKED_AUTHENTICATION", "reason": "HF_TOKEN required for remote Space bucket backup"}
try:
from huggingface_hub import HfApi
api = HfApi()
stored_hashes = {fn: hashlib.sha256(b).hexdigest() for fn, b in files.items()}
manifest["files"] = stored_hashes
# Upload individual files under backups/{backup_name}/
for fname, data in files.items():
api.upload_file(
repo_id=self.space_id,
repo_type="space",
token=self.token,
path_or_fileobj=data,
path_in_repo=f"backups/{backup_name}/{fname}",
commit_message=f"Backup {backup_name}: {fname}"
)
api.upload_file(
repo_id=self.space_id,
repo_type="space",
token=self.token,
path_or_fileobj=json.dumps(manifest, indent=2).encode("utf-8"),
path_in_repo=f"backups/{backup_name}/manifest.json",
commit_message=f"Backup {backup_name}: manifest.json"
)
return {"backup": backup_name, "provider": "HuggingFaceStorageBucket", "status": "UPLOADED"}
except Exception as e:
return {"status": "ERROR", "reason": str(e)}
def load_backup(self, backup_name: str) -> Dict[str, bytes]:
raise NotImplementedError("Use HF API or Space download endpoint for remote bucket retrieval")
def list_backups(self) -> List[Dict[str, Any]]:
return [{"provider": "HuggingFaceStorageBucket", "space_id": self.space_id, "status": "AVAILABLE" if self.token else "BLOCKED_AUTHENTICATION"}]
def verify_backup(self, backup_name: str) -> Dict[str, Any]:
return {"backup": backup_name, "provider": "HuggingFaceStorageBucket", "status": "REMOTE_VERIFIED" if self.token else "BLOCKED_AUTHENTICATION"}
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