feat(backup): extend backup and restore to PostgreSQL and MySQL/MariaDB

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>
This commit is contained in:
copilot-swe-agent[bot]
2026-03-08 09:56:58 +00:00
parent 8d65f09400
commit a0f5ba1799
5 changed files with 941 additions and 104 deletions
+84 -68
View File
@@ -117,88 +117,104 @@ async def restore_backup(
"""Restore the database from an uploaded gzip-compressed SQL dump.
**Warning**: This overwrites the current database contents.
Only SQLite databases are supported.
The uploaded file must be a ``.db.gz`` file produced by the DocuElevate
backup task (a gzip-compressed SQLite ``.dump()`` SQL script).
Supported formats (must match the currently configured database backend):
- ``*.db.gz`` gzip-compressed SQLite ``.dump()`` SQL script (SQLite backend)
- ``*.pgsql.gz`` gzip-compressed ``pg_dump --format=plain`` output (PostgreSQL backend)
- ``*.mysql.gz`` gzip-compressed ``mysqldump`` output (MySQL / MariaDB backend)
"""
from app.tasks.backup_tasks import _db_path
db_path = _db_path()
if db_path is None:
raise HTTPException(
status_code=status.HTTP_400_BAD_REQUEST,
detail="Restore is only supported for SQLite databases.",
)
if not file.filename or not file.filename.endswith(".db.gz"):
raise HTTPException(
status_code=status.HTTP_400_BAD_REQUEST,
detail="Uploaded file must be a .db.gz backup archive.",
)
import gzip
import sqlite3
import tempfile
from pathlib import Path
# Write the upload to a temp file first so we can validate it
with tempfile.NamedTemporaryFile(suffix=".db.gz", delete=False) as tmp:
from sqlalchemy.engine.url import make_url
from app.config import settings as app_settings
from app.tasks.backup_tasks import (
_archive_ext_for_backend,
_db_path,
_restore_mysql,
_restore_postgresql,
_restore_sqlite,
)
url = make_url(app_settings.database_url)
backend = url.get_backend_name()
expected_ext = _archive_ext_for_backend(backend)
if not file.filename or not file.filename.endswith(expected_ext):
raise HTTPException(
status_code=status.HTTP_400_BAD_REQUEST,
detail=(
f"Uploaded file must be a '{expected_ext}' backup archive for the current database backend ({backend})."
),
)
# Write upload to a temp file
with tempfile.NamedTemporaryFile(suffix=expected_ext, delete=False) as tmp:
tmp_path = Path(tmp.name)
content = await file.read()
tmp.write(content)
try:
# Decompress and read SQL statements
with gzip.open(str(tmp_path), "rt", encoding="utf-8") as gz:
sql_script = gz.read()
except Exception as exc:
tmp_path.unlink(missing_ok=True)
raise HTTPException(
status_code=status.HTTP_400_BAD_REQUEST,
detail=f"Failed to decompress backup file: {exc}",
) from exc
if backend == "sqlite":
db_path = _db_path()
if db_path is None:
raise HTTPException(
status_code=status.HTTP_400_BAD_REQUEST,
detail="Restore is only supported for file-based SQLite databases.",
)
# Close the application DB session before replacing the file
db.close()
try:
_restore_sqlite(db_path, tmp_path)
except ValueError as exc:
raise HTTPException(
status_code=status.HTTP_400_BAD_REQUEST,
detail=str(exc),
) from exc
except RuntimeError as exc:
raise HTTPException(
status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
detail=str(exc),
) from exc
# Create a fresh in-memory DB from the script to validate it
try:
mem_conn = sqlite3.connect(":memory:")
mem_conn.executescript(sql_script)
mem_conn.close()
except sqlite3.Error as exc:
tmp_path.unlink(missing_ok=True)
raise HTTPException(
status_code=status.HTTP_400_BAD_REQUEST,
detail=f"Backup file contains invalid SQL: {exc}",
) from exc
elif backend == "postgresql":
db.close()
try:
_restore_postgresql(app_settings.database_url, tmp_path)
except FileNotFoundError as exc:
raise HTTPException(
status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
detail=f"psql binary not found is PostgreSQL client installed? ({exc})",
) from exc
except RuntimeError as exc:
raise HTTPException(
status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
detail=f"PostgreSQL restore failed: {exc}",
) from exc
# Close the application DB session before replacing the file
db.close()
elif backend == "mysql":
db.close()
try:
_restore_mysql(app_settings.database_url, tmp_path)
except FileNotFoundError as exc:
raise HTTPException(
status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
detail=f"mysql binary not found is MySQL client installed? ({exc})",
) from exc
except RuntimeError as exc:
raise HTTPException(
status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
detail=f"MySQL restore failed: {exc}",
) from exc
# Preserve the current DB before overwriting
import shutil
else:
raise HTTPException(
status_code=status.HTTP_400_BAD_REQUEST,
detail=f"Database backend '{backend}' does not support restore.",
)
bak = str(db_path) + ".pre_restore"
try:
shutil.copy2(str(db_path), bak)
except OSError as exc:
logger.warning(f"Could not create pre-restore backup at {bak}: {exc}")
try:
# Write the restored database
restore_conn = sqlite3.connect(str(db_path))
restore_conn.executescript(sql_script)
restore_conn.close()
except sqlite3.Error as exc:
# Attempt rollback
try:
if os.path.exists(bak):
shutil.copy2(bak, str(db_path))
except OSError as rollback_exc:
logger.error(f"Rollback failed; database may be corrupted: {rollback_exc}")
raise HTTPException(
status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
detail=f"Restore failed: {exc}",
) from exc
finally:
tmp_path.unlink(missing_ok=True)
+337 -9
View File
@@ -16,12 +16,19 @@ Three separate Celery-beat entries call ``create_backup`` with the appropriate
After each backup is created ``_apply_retention`` prunes old local backups for
that tier. Remote copies are pruned by ``_prune_remote_backups`` which mirrors
the same retention limits.
Supported database backends
----------------------------
- **SQLite** dumped via Python's built-in ``sqlite3.iterdump()``; archive extension ``.db.gz``
- **PostgreSQL** dumped via ``pg_dump --format=plain``; archive extension ``.pgsql.gz``
- **MySQL / MariaDB** dumped via ``mysqldump --single-transaction``; archive extension ``.mysql.gz``
"""
import gzip
import hashlib
import logging
import os
import subprocess
from datetime import datetime, timezone
from pathlib import Path
@@ -42,6 +49,13 @@ _BACKUP_TYPE_RETAIN: dict[str, str] = {
"weekly": "backup_retain_weekly",
}
#: Map of backend name → archive file extension.
_BACKEND_EXTENSIONS: dict[str, str] = {
"sqlite": ".db.gz",
"postgresql": ".pgsql.gz",
"mysql": ".mysql.gz",
}
def _backup_dir() -> Path:
"""Return (and create) the local backup directory."""
@@ -51,6 +65,14 @@ def _backup_dir() -> Path:
return path
def _db_backend() -> str:
"""Return the database backend name (e.g. ``'sqlite'``, ``'postgresql'``, ``'mysql'``)."""
from sqlalchemy.engine.url import make_url
url = make_url(settings.database_url)
return url.get_backend_name()
def _db_path() -> Path | None:
"""Return the SQLite database file path, or None for non-SQLite databases."""
from sqlalchemy.engine.url import make_url
@@ -64,6 +86,20 @@ def _db_path() -> Path | None:
return Path(db)
def _archive_ext_for_backend(backend: str) -> str:
"""Return the archive file extension for the given database backend.
Args:
backend: Backend name as returned by
``sqlalchemy.engine.url.URL.get_backend_name()`` (e.g. ``'sqlite'``).
Returns:
File extension string including the leading dot, e.g. ``'.db.gz'``.
Falls back to ``'.sql.gz'`` for unknown backends.
"""
return _BACKEND_EXTENSIONS.get(backend, ".sql.gz")
def _sha256(path: Path) -> str:
"""Return the SHA-256 hex digest of *path*."""
h = hashlib.sha256()
@@ -86,6 +122,277 @@ def _dump_sqlite(db_path: Path, dest: Path) -> None:
conn.close()
def _dump_postgresql(db_url: str, dest: Path) -> None:
"""Write a gzip-compressed ``pg_dump`` of the PostgreSQL database to *dest*.
Uses ``PGPASSWORD`` environment variable so the password is never exposed on
the process command line.
Args:
db_url: Full SQLAlchemy database URL (e.g. ``postgresql://user:pass@host/db``).
dest: Destination path for the ``.pgsql.gz`` archive.
Raises:
RuntimeError: If ``pg_dump`` exits with a non-zero return code.
FileNotFoundError: If the ``pg_dump`` binary is not found.
"""
from sqlalchemy.engine.url import make_url
url = make_url(db_url)
env = os.environ.copy()
if url.password:
env["PGPASSWORD"] = str(url.password)
# Command arguments are built from the SQLAlchemy URL (admin-configured DATABASE_URL),
# not from user-controlled input. shell=False (the default when passing a list) is used
# so there is no shell interpretation of the argument values.
cmd: list[str] = ["pg_dump", "--format=plain", "--no-password"]
if url.host:
cmd.extend(["-h", url.host])
if url.port:
cmd.extend(["-p", str(url.port)])
if url.username:
cmd.extend(["-U", url.username])
if url.database:
cmd.append(url.database)
with gzip.open(str(dest), "wb") as gz:
proc = subprocess.Popen( # noqa: S603
cmd,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
env=env,
)
stdout = proc.stdout
if stdout is None: # pragma: no cover guaranteed by stdout=PIPE
raise RuntimeError("pg_dump produced no stdout pipe")
try:
while True:
chunk = stdout.read(65536)
if not chunk:
break
gz.write(chunk)
finally:
stdout.close()
stderr_bytes = proc.stderr.read() if proc.stderr else b""
proc.wait()
if proc.returncode != 0:
dest.unlink(missing_ok=True)
raise RuntimeError(
f"pg_dump exited with code {proc.returncode}: {stderr_bytes.decode(errors='replace').strip()}"
)
def _dump_mysql(db_url: str, dest: Path) -> None:
"""Write a gzip-compressed ``mysqldump`` of the MySQL database to *dest*.
Uses the ``MYSQL_PWD`` environment variable so the password is never exposed
on the process command line.
Args:
db_url: Full SQLAlchemy database URL
(e.g. ``mysql+pymysql://user:pass@host/db``).
dest: Destination path for the ``.mysql.gz`` archive.
Raises:
RuntimeError: If ``mysqldump`` exits with a non-zero return code.
FileNotFoundError: If the ``mysqldump`` binary is not found.
"""
from sqlalchemy.engine.url import make_url
url = make_url(db_url)
env = os.environ.copy()
if url.password:
env["MYSQL_PWD"] = str(url.password)
# Command arguments are built from the SQLAlchemy URL (admin-configured DATABASE_URL).
# shell=False (list form) prevents shell interpretation of argument values.
cmd: list[str] = ["mysqldump", "--single-transaction", "--routines", "--triggers"]
if url.host:
cmd.extend(["-h", url.host])
if url.port:
cmd.extend(["-P", str(url.port)])
if url.username:
cmd.extend(["-u", url.username])
if url.database:
cmd.append(url.database)
with gzip.open(str(dest), "wb") as gz:
proc = subprocess.Popen( # noqa: S603
cmd,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
env=env,
)
stdout = proc.stdout
if stdout is None: # pragma: no cover guaranteed by stdout=PIPE
raise RuntimeError("mysqldump produced no stdout pipe")
try:
while True:
chunk = stdout.read(65536)
if not chunk:
break
gz.write(chunk)
finally:
stdout.close()
stderr_bytes = proc.stderr.read() if proc.stderr else b""
proc.wait()
if proc.returncode != 0:
dest.unlink(missing_ok=True)
raise RuntimeError(
f"mysqldump exited with code {proc.returncode}: {stderr_bytes.decode(errors='replace').strip()}"
)
def _restore_sqlite(db_path: Path, archive_path: Path) -> None:
"""Restore a SQLite database from a gzip-compressed SQL dump archive.
Validates the SQL by replaying it on an in-memory database before touching
the live file. Saves a ``<db_path>.pre_restore`` rollback copy first.
Args:
db_path: Path to the live SQLite database file to overwrite.
archive_path: Path to the ``.db.gz`` gzip-compressed SQL dump.
Raises:
ValueError: If the archive cannot be decompressed or contains invalid SQL.
RuntimeError: If writing the restored database fails.
"""
import shutil
import sqlite3
# Decompress and read SQL statements
try:
with gzip.open(str(archive_path), "rt", encoding="utf-8") as gz:
sql_script = gz.read()
except Exception as exc:
raise ValueError(f"Failed to decompress backup file: {exc}") from exc
# Validate by replaying on an in-memory database
try:
mem_conn = sqlite3.connect(":memory:")
mem_conn.executescript(sql_script)
mem_conn.close()
except sqlite3.Error as exc:
raise ValueError(f"Backup file contains invalid SQL: {exc}") from exc
# Preserve the current DB before overwriting
bak = str(db_path) + ".pre_restore"
try:
shutil.copy2(str(db_path), bak)
except OSError as exc:
logger.warning(f"Could not create pre-restore backup at {bak}: {exc}")
try:
restore_conn = sqlite3.connect(str(db_path))
restore_conn.executescript(sql_script)
restore_conn.close()
except sqlite3.Error as exc:
# Attempt rollback to the pre-restore copy
try:
if os.path.exists(bak):
shutil.copy2(bak, str(db_path))
except OSError as rollback_exc:
logger.error(f"Rollback failed; database may be corrupted: {rollback_exc}")
raise RuntimeError(f"SQLite restore failed: {exc}") from exc
def _restore_postgresql(db_url: str, archive_path: Path) -> None:
"""Restore a PostgreSQL database from a gzip-compressed SQL dump archive.
Pipes the decompressed dump to ``psql``. Uses ``PGPASSWORD`` so the
password is never exposed on the process command line.
Args:
db_url: Full SQLAlchemy database URL.
archive_path: Path to the ``.pgsql.gz`` gzip-compressed ``pg_dump`` archive.
Raises:
RuntimeError: If ``psql`` exits with a non-zero return code.
FileNotFoundError: If the ``psql`` binary is not found.
"""
from sqlalchemy.engine.url import make_url
url = make_url(db_url)
env = os.environ.copy()
if url.password:
env["PGPASSWORD"] = str(url.password)
# Command arguments are built from the SQLAlchemy URL (admin-configured DATABASE_URL).
# shell=False (list form) prevents shell interpretation of argument values.
cmd: list[str] = ["psql", "--no-password"]
if url.host:
cmd.extend(["-h", url.host])
if url.port:
cmd.extend(["-p", str(url.port)])
if url.username:
cmd.extend(["-U", url.username])
if url.database:
cmd.append(url.database)
with gzip.open(str(archive_path), "rb") as gz:
proc = subprocess.Popen( # noqa: S603
cmd,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
env=env,
)
_, stderr_bytes = proc.communicate(input=gz.read())
if proc.returncode != 0:
raise RuntimeError(f"psql exited with code {proc.returncode}: {stderr_bytes.decode(errors='replace').strip()}")
def _restore_mysql(db_url: str, archive_path: Path) -> None:
"""Restore a MySQL database from a gzip-compressed SQL dump archive.
Pipes the decompressed dump to ``mysql``. Uses the ``MYSQL_PWD``
environment variable so the password is never exposed on the command line.
Args:
db_url: Full SQLAlchemy database URL.
archive_path: Path to the ``.mysql.gz`` gzip-compressed ``mysqldump`` archive.
Raises:
RuntimeError: If ``mysql`` exits with a non-zero return code.
FileNotFoundError: If the ``mysql`` binary is not found.
"""
from sqlalchemy.engine.url import make_url
url = make_url(db_url)
env = os.environ.copy()
if url.password:
env["MYSQL_PWD"] = str(url.password)
# Command arguments are built from the SQLAlchemy URL (admin-configured DATABASE_URL).
# shell=False (list form) prevents shell interpretation of argument values.
cmd: list[str] = ["mysql"]
if url.host:
cmd.extend(["-h", url.host])
if url.port:
cmd.extend(["-P", str(url.port)])
if url.username:
cmd.extend(["-u", url.username])
if url.database:
cmd.append(url.database)
with gzip.open(str(archive_path), "rb") as gz:
proc = subprocess.Popen( # noqa: S603
cmd,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
env=env,
)
_, stderr_bytes = proc.communicate(input=gz.read())
if proc.returncode != 0:
raise RuntimeError(f"mysql exited with code {proc.returncode}: {stderr_bytes.decode(errors='replace').strip()}")
def _apply_retention(backup_type: str, db: object) -> None:
"""Delete local backups beyond the retention limit for *backup_type*.
@@ -314,6 +621,11 @@ def _email_backup(archive_path: Path, filename: str) -> None:
def create_backup(self, backup_type: str = "hourly") -> dict:
"""Create a database backup archive and apply retention.
Supports SQLite (``.db.gz``), PostgreSQL (``.pgsql.gz``), and
MySQL / MariaDB (``.mysql.gz``) databases. The native dump tool for the
configured backend (``sqlite3``, ``pg_dump``, or ``mysqldump``) must be
available on the worker's ``PATH``.
Args:
backup_type: ``"hourly"``, ``"daily"``, or ``"weekly"``.
@@ -327,19 +639,27 @@ def create_backup(self, backup_type: str = "hourly") -> dict:
logger.debug("Backup is disabled; skipping create_backup task.")
return {"status": "disabled"}
backend = _db_backend()
ext = _archive_ext_for_backend(backend)
ts = datetime.now(timezone.utc).strftime("%Y-%m-%dT%H-%M-%S")
filename = f"backup_{backup_type}_{ts}.db.gz"
filename = f"backup_{backup_type}_{ts}{ext}"
archive_path = _backup_dir() / filename
db_path = _db_path()
if db_path is None:
logger.warning("Backup task skipped: non-SQLite databases are not supported for file-based backups.")
# SQLite: verify the database file exists before attempting to dump it
db_path: Path | None = None
if backend == "sqlite":
db_path = _db_path()
if db_path is None:
logger.warning("Backup task skipped: in-memory SQLite databases are not supported.")
return {"status": "unsupported_db"}
if not db_path.exists():
logger.error(f"Database file not found: {db_path}")
return {"status": "error", "detail": f"DB file missing: {db_path}"}
elif backend not in ("postgresql", "mysql"):
logger.warning(f"Backup task skipped: unsupported database backend '{backend}'.")
return {"status": "unsupported_db"}
if not db_path.exists():
logger.error(f"Database file not found: {db_path}")
return {"status": "error", "detail": f"DB file missing: {db_path}"}
status = "ok"
checksum: str | None = None
size_bytes = 0
@@ -347,7 +667,15 @@ def create_backup(self, backup_type: str = "hourly") -> dict:
remote_path: str | None = None
try:
_dump_sqlite(db_path, archive_path)
if backend == "sqlite":
# db_path is guaranteed non-None: we returned early if it were None
if db_path is None: # pragma: no cover
return {"status": "error", "detail": "db_path unexpectedly None"}
_dump_sqlite(db_path, archive_path)
elif backend == "postgresql":
_dump_postgresql(settings.database_url, archive_path)
elif backend == "mysql":
_dump_mysql(settings.database_url, archive_path)
size_bytes = archive_path.stat().st_size
checksum = _sha256(archive_path)
logger.info(f"Created {backup_type} backup: {archive_path} ({size_bytes:,} bytes)")
+5 -1
View File
@@ -1037,9 +1037,13 @@ Webhook URLs, secrets, and subscribed events are configured per-webhook via the
### Backup & Restore
DocuElevate can automatically back up the SQLite database on a scheduled basis.
DocuElevate automatically backs up the database on a scheduled basis.
Backups are managed from the **Admin → Backup & Restore** dashboard.
Supported database backends: **SQLite** (`.db.gz`), **PostgreSQL** (`.pgsql.gz`), **MySQL / MariaDB** (`.mysql.gz`).
For PostgreSQL and MySQL backups the respective CLI client (`pg_dump` / `psql` or `mysqldump` / `mysql`) must be installed on the Celery worker host.
See the [Database Configuration Guide](DatabaseConfiguration.md#backup-procedures) for setup details.
| **Variable** | **Description** | **Default** |
|--------------------------------|-----------------------------------------------------------------------------------------------|---------------------|
| `BACKUP_ENABLED` | Enable or disable automatic scheduled backups (`True`/`False`). | `True` |
+71 -9
View File
@@ -341,29 +341,91 @@ Disable `prepared_statements` when using PgBouncer in transaction mode.
## Backup Procedures
### PostgreSQL
DocuElevate's built-in **Backup & Restore** feature (Admin → Backup & Restore) supports all three
database backends natively, using the native dump tools of each database.
**Manual backup:**
| Backend | Backup tool | Archive extension | Restore tool |
|----------------|--------------|-------------------|--------------|
| SQLite | `sqlite3` (built-in Python) | `.db.gz` | `sqlite3` (built-in Python) |
| PostgreSQL | `pg_dump` | `.pgsql.gz` | `psql` |
| MySQL/MariaDB | `mysqldump` | `.mysql.gz` | `mysql` |
Passwords are passed via the `PGPASSWORD` (PostgreSQL) and `MYSQL_PWD` (MySQL) environment
variables so they are never exposed on the process command line.
### Prerequisites
For PostgreSQL and MySQL backups the corresponding CLI client must be installed on the
worker host (the container / server that runs Celery workers):
```bash
# PostgreSQL clients (Debian/Ubuntu)
apt-get install -y postgresql-client
# MySQL clients (Debian/Ubuntu)
apt-get install -y default-mysql-client
```
The binaries required are:
- **PostgreSQL**: `pg_dump` (backup) and `psql` (restore)
- **MySQL / MariaDB**: `mysqldump` (backup) and `mysql` (restore)
### Using the Admin Dashboard
Navigate to **Admin → Backup & Restore** to:
- Trigger manual backups (hourly / daily / weekly)
- Download backup archives
- Upload and restore a backup archive
- Configure retention and remote storage destinations
### PostgreSQL manual backup/restore
**Manual backup using DocuElevate's archive format (for use with the UI restore):**
```bash
pg_dump --format=plain --no-password \
-h localhost -U docuelevate docuelevate \
| gzip > docuelevate_$(date +%Y%m%d_%H%M).pgsql.gz
```
**Restore via the DocuElevate UI:** upload the `.pgsql.gz` file on the Backup & Restore page.
**Manual restore using native tools (custom format):**
```bash
pg_dump -h localhost -U docuelevate -F c docuelevate > docuelevate_$(date +%Y%m%d_%H%M).dump
```
**Restore:**
```bash
pg_restore -h localhost -U docuelevate -d docuelevate docuelevate_20240101_1200.dump
```
**Automated daily backup (cron example):**
```cron
0 2 * * * pg_dump -h localhost -U docuelevate -F c docuelevate | gzip > /backups/docuelevate_$(date +\%Y\%m\%d).dump.gz
0 2 * * * pg_dump --format=plain -h localhost -U docuelevate docuelevate | gzip > /backups/docuelevate_$(date +\%Y\%m\%d).pgsql.gz
```
Use your cloud provider's automated backup feature when available (e.g., RDS automated snapshots, Cloud SQL backups).
### SQLite
### MySQL / MariaDB manual backup/restore
**Manual backup using DocuElevate's archive format (for use with the UI restore):**
```bash
MYSQL_PWD=yourpassword mysqldump --single-transaction --routines --triggers \
-h localhost -u docuelevate docuelevate \
| gzip > docuelevate_$(date +%Y%m%d_%H%M).mysql.gz
```
**Restore via the DocuElevate UI:** upload the `.mysql.gz` file on the Backup & Restore page.
**Manual restore using native tools:**
```bash
gunzip -c docuelevate_20240101_1200.mysql.gz | mysql -h localhost -u docuelevate -p docuelevate
```
### SQLite manual backup/restore
```bash
# Stop the application first, or use SQLite's online backup API
+444 -17
View File
@@ -236,6 +236,254 @@ class TestBackupTaskHelpers:
result = _db_path()
assert result is None
def test_db_backend_sqlite(self):
"""_db_backend() returns 'sqlite' for SQLite URLs."""
from app.tasks.backup_tasks import _db_backend
with patch("app.tasks.backup_tasks.settings") as mock_settings:
mock_settings.database_url = "sqlite:////tmp/test.db"
assert _db_backend() == "sqlite"
def test_db_backend_postgresql(self):
"""_db_backend() returns 'postgresql' for PostgreSQL URLs."""
from app.tasks.backup_tasks import _db_backend
with patch("app.tasks.backup_tasks.settings") as mock_settings:
mock_settings.database_url = "postgresql://user:pass@localhost/db"
assert _db_backend() == "postgresql"
def test_db_backend_mysql(self):
"""_db_backend() returns 'mysql' for MySQL URLs."""
from app.tasks.backup_tasks import _db_backend
with patch("app.tasks.backup_tasks.settings") as mock_settings:
mock_settings.database_url = "mysql+pymysql://user:pass@localhost/db"
assert _db_backend() == "mysql"
def test_archive_ext_sqlite(self):
"""_archive_ext_for_backend() returns '.db.gz' for sqlite."""
from app.tasks.backup_tasks import _archive_ext_for_backend
assert _archive_ext_for_backend("sqlite") == ".db.gz"
def test_archive_ext_postgresql(self):
"""_archive_ext_for_backend() returns '.pgsql.gz' for postgresql."""
from app.tasks.backup_tasks import _archive_ext_for_backend
assert _archive_ext_for_backend("postgresql") == ".pgsql.gz"
def test_archive_ext_mysql(self):
"""_archive_ext_for_backend() returns '.mysql.gz' for mysql."""
from app.tasks.backup_tasks import _archive_ext_for_backend
assert _archive_ext_for_backend("mysql") == ".mysql.gz"
def test_archive_ext_unknown(self):
"""_archive_ext_for_backend() falls back to '.sql.gz' for unknown backends."""
from app.tasks.backup_tasks import _archive_ext_for_backend
assert _archive_ext_for_backend("mssql") == ".sql.gz"
def test_dump_postgresql_success(self, tmp_path):
"""_dump_postgresql() streams pg_dump output into a gzip archive."""
from unittest.mock import MagicMock
from app.tasks.backup_tasks import _dump_postgresql
dest = tmp_path / "dump.pgsql.gz"
fake_sql = b"-- PostgreSQL database dump\nSELECT 1;\n"
mock_proc = MagicMock()
mock_proc.stdout.read.side_effect = [fake_sql, b""]
mock_proc.stderr.read.return_value = b""
mock_proc.returncode = 0
with patch("app.tasks.backup_tasks.subprocess.Popen", return_value=mock_proc):
_dump_postgresql("postgresql://user:pass@localhost/testdb", dest)
assert dest.exists()
with gzip.open(str(dest), "rb") as gz:
assert gz.read() == fake_sql
def test_dump_postgresql_failure(self, tmp_path):
"""_dump_postgresql() raises RuntimeError when pg_dump fails."""
from unittest.mock import MagicMock
from app.tasks.backup_tasks import _dump_postgresql
dest = tmp_path / "dump.pgsql.gz"
mock_proc = MagicMock()
mock_proc.stdout.read.side_effect = [b""]
mock_proc.stderr.read.return_value = b"FATAL: connection refused"
mock_proc.returncode = 1
with patch("app.tasks.backup_tasks.subprocess.Popen", return_value=mock_proc):
with pytest.raises(RuntimeError, match="pg_dump exited with code 1"):
_dump_postgresql("postgresql://user:pass@localhost/testdb", dest)
def test_dump_mysql_success(self, tmp_path):
"""_dump_mysql() streams mysqldump output into a gzip archive."""
from unittest.mock import MagicMock
from app.tasks.backup_tasks import _dump_mysql
dest = tmp_path / "dump.mysql.gz"
fake_sql = b"-- MySQL dump\nCREATE TABLE t (id INT);\n"
mock_proc = MagicMock()
mock_proc.stdout.read.side_effect = [fake_sql, b""]
mock_proc.stderr.read.return_value = b""
mock_proc.returncode = 0
with patch("app.tasks.backup_tasks.subprocess.Popen", return_value=mock_proc):
_dump_mysql("mysql+pymysql://user:pass@localhost/testdb", dest)
assert dest.exists()
with gzip.open(str(dest), "rb") as gz:
assert gz.read() == fake_sql
def test_dump_mysql_failure(self, tmp_path):
"""_dump_mysql() raises RuntimeError when mysqldump fails."""
from unittest.mock import MagicMock
from app.tasks.backup_tasks import _dump_mysql
dest = tmp_path / "dump.mysql.gz"
mock_proc = MagicMock()
mock_proc.stdout.read.side_effect = [b""]
mock_proc.stderr.read.return_value = b"ERROR: Access denied"
mock_proc.returncode = 1
with patch("app.tasks.backup_tasks.subprocess.Popen", return_value=mock_proc):
with pytest.raises(RuntimeError, match="mysqldump exited with code 1"):
_dump_mysql("mysql+pymysql://user:pass@localhost/testdb", dest)
def test_restore_sqlite_success(self, tmp_path):
"""_restore_sqlite() applies a valid SQL dump to a SQLite file."""
from app.tasks.backup_tasks import _restore_sqlite
db_file = tmp_path / "test.db"
conn = sqlite3.connect(str(db_file))
conn.execute("CREATE TABLE old (id INTEGER)")
conn.commit()
conn.close()
# Create a valid dump archive
sql = "BEGIN TRANSACTION;\nCREATE TABLE new_tbl (x TEXT);\nCOMMIT;\n"
archive = tmp_path / "dump.db.gz"
with gzip.open(str(archive), "wt") as gz:
gz.write(sql)
_restore_sqlite(db_file, archive)
conn2 = sqlite3.connect(str(db_file))
tables = [r[0] for r in conn2.execute("SELECT name FROM sqlite_master WHERE type='table'")]
conn2.close()
assert "new_tbl" in tables
def test_restore_sqlite_invalid_gz(self, tmp_path):
"""_restore_sqlite() raises ValueError for corrupt gzip content."""
from app.tasks.backup_tasks import _restore_sqlite
db_file = tmp_path / "test.db"
db_file.write_bytes(b"")
archive = tmp_path / "bad.db.gz"
archive.write_bytes(b"not gzip data")
with pytest.raises(ValueError, match="Failed to decompress"):
_restore_sqlite(db_file, archive)
def test_restore_sqlite_invalid_sql(self, tmp_path):
"""_restore_sqlite() raises ValueError for invalid SQL content."""
from app.tasks.backup_tasks import _restore_sqlite
db_file = tmp_path / "test.db"
db_file.write_bytes(b"")
archive = tmp_path / "bad.db.gz"
with gzip.open(str(archive), "wt") as gz:
gz.write("THIS IS NOT VALID SQL!!!;\n")
with pytest.raises(ValueError, match="invalid SQL"):
_restore_sqlite(db_file, archive)
def test_restore_postgresql_success(self, tmp_path):
"""_restore_postgresql() pipes the archive to psql."""
from unittest.mock import MagicMock
from app.tasks.backup_tasks import _restore_postgresql
fake_sql = b"-- PostgreSQL dump\nSELECT 1;\n"
archive = tmp_path / "dump.pgsql.gz"
with gzip.open(str(archive), "wb") as gz:
gz.write(fake_sql)
mock_proc = MagicMock()
mock_proc.communicate.return_value = (b"", b"")
mock_proc.returncode = 0
with patch("app.tasks.backup_tasks.subprocess.Popen", return_value=mock_proc):
_restore_postgresql("postgresql://user:pass@localhost/testdb", archive)
mock_proc.communicate.assert_called_once_with(input=fake_sql)
def test_restore_postgresql_failure(self, tmp_path):
"""_restore_postgresql() raises RuntimeError when psql fails."""
from unittest.mock import MagicMock
from app.tasks.backup_tasks import _restore_postgresql
archive = tmp_path / "dump.pgsql.gz"
with gzip.open(str(archive), "wb") as gz:
gz.write(b"SELECT 1;")
mock_proc = MagicMock()
mock_proc.communicate.return_value = (b"", b"ERROR: invalid input")
mock_proc.returncode = 1
with patch("app.tasks.backup_tasks.subprocess.Popen", return_value=mock_proc):
with pytest.raises(RuntimeError, match="psql exited with code 1"):
_restore_postgresql("postgresql://user:pass@localhost/testdb", archive)
def test_restore_mysql_success(self, tmp_path):
"""_restore_mysql() pipes the archive to mysql."""
from unittest.mock import MagicMock
from app.tasks.backup_tasks import _restore_mysql
fake_sql = b"-- MySQL dump\nSELECT 1;\n"
archive = tmp_path / "dump.mysql.gz"
with gzip.open(str(archive), "wb") as gz:
gz.write(fake_sql)
mock_proc = MagicMock()
mock_proc.communicate.return_value = (b"", b"")
mock_proc.returncode = 0
with patch("app.tasks.backup_tasks.subprocess.Popen", return_value=mock_proc):
_restore_mysql("mysql+pymysql://user:pass@localhost/testdb", archive)
mock_proc.communicate.assert_called_once_with(input=fake_sql)
def test_restore_mysql_failure(self, tmp_path):
"""_restore_mysql() raises RuntimeError when mysql fails."""
from unittest.mock import MagicMock
from app.tasks.backup_tasks import _restore_mysql
archive = tmp_path / "dump.mysql.gz"
with gzip.open(str(archive), "wb") as gz:
gz.write(b"SELECT 1;")
mock_proc = MagicMock()
mock_proc.communicate.return_value = (b"", b"ERROR: Access denied")
mock_proc.returncode = 1
with patch("app.tasks.backup_tasks.subprocess.Popen", return_value=mock_proc):
with pytest.raises(RuntimeError, match="mysql exited with code 1"):
_restore_mysql("mysql+pymysql://user:pass@localhost/testdb", archive)
def test_apply_retention_prunes_old(self, tmp_path, db_session):
"""_apply_retention() deletes backups beyond the retention limit."""
from app.tasks.backup_tasks import _apply_retention
@@ -352,20 +600,28 @@ class TestCreateBackupTask:
result = create_backup("hourly")
assert result["status"] == "disabled"
def test_non_sqlite_db(self):
"""create_backup returns unsupported_db for non-SQLite databases."""
def test_unsupported_db_backend(self):
"""create_backup returns unsupported_db for backends other than sqlite/postgresql/mysql."""
from app.tasks.backup_tasks import create_backup
with (
patch("app.tasks.backup_tasks.settings") as mock_settings,
patch("app.tasks.backup_tasks._db_path", return_value=None),
):
with patch("app.tasks.backup_tasks.settings") as mock_settings:
mock_settings.backup_enabled = True
mock_settings.database_url = "mssql+pyodbc://user:pass@server/db"
result = create_backup("hourly")
assert result["status"] == "unsupported_db"
def test_in_memory_sqlite_unsupported(self):
"""create_backup returns unsupported_db for in-memory SQLite."""
from app.tasks.backup_tasks import create_backup
with patch("app.tasks.backup_tasks.settings") as mock_settings:
mock_settings.backup_enabled = True
mock_settings.database_url = "sqlite:///:memory:"
result = create_backup("hourly")
assert result["status"] == "unsupported_db"
def test_missing_db_file(self, tmp_path):
"""create_backup returns error when the DB file does not exist."""
"""create_backup returns error when the SQLite DB file does not exist."""
from app.tasks.backup_tasks import create_backup
missing = tmp_path / "does_not_exist.db"
@@ -375,6 +631,7 @@ class TestCreateBackupTask:
patch("app.tasks.backup_tasks._db_path", return_value=missing),
):
mock_settings.backup_enabled = True
mock_settings.database_url = f"sqlite:///{missing}"
result = create_backup("hourly")
assert result["status"] == "error"
@@ -400,6 +657,7 @@ class TestCreateBackupTask:
):
backup_dir.mkdir(parents=True, exist_ok=True)
mock_settings.backup_enabled = True
mock_settings.database_url = f"sqlite:///{db_file}"
mock_db = MagicMock()
mock_sl.return_value.__enter__ = MagicMock(return_value=mock_db)
mock_sl.return_value.__exit__ = MagicMock(return_value=False)
@@ -408,6 +666,69 @@ class TestCreateBackupTask:
assert result["status"] == "ok"
assert "filename" in result
assert result["filename"].startswith("backup_hourly_")
assert result["filename"].endswith(".db.gz")
def test_successful_backup_postgresql(self, tmp_path):
"""create_backup creates a .pgsql.gz archive for PostgreSQL databases."""
from app.tasks.backup_tasks import create_backup
backup_dir = tmp_path / "backups"
backup_dir.mkdir()
def fake_pg_dump(db_url: str, dest: Path) -> None:
with gzip.open(str(dest), "wb") as gz:
gz.write(b"-- PostgreSQL dump\n")
with (
patch("app.tasks.backup_tasks.settings") as mock_settings,
patch("app.tasks.backup_tasks._backup_dir", return_value=backup_dir),
patch("app.tasks.backup_tasks._dump_postgresql", side_effect=fake_pg_dump),
patch("app.tasks.backup_tasks._upload_remote", return_value=None),
patch("app.tasks.backup_tasks._apply_retention"),
patch("app.tasks.backup_tasks._prune_remote_backups"),
patch("app.tasks.backup_tasks.SessionLocal") as mock_sl,
):
mock_settings.backup_enabled = True
mock_settings.database_url = "postgresql://user:pass@localhost/testdb"
mock_db = MagicMock()
mock_sl.return_value.__enter__ = MagicMock(return_value=mock_db)
mock_sl.return_value.__exit__ = MagicMock(return_value=False)
result = create_backup("daily")
assert result["status"] == "ok"
assert result["filename"].endswith(".pgsql.gz")
assert "daily" in result["filename"]
def test_successful_backup_mysql(self, tmp_path):
"""create_backup creates a .mysql.gz archive for MySQL databases."""
from app.tasks.backup_tasks import create_backup
backup_dir = tmp_path / "backups"
backup_dir.mkdir()
def fake_mysql_dump(db_url: str, dest: Path) -> None:
with gzip.open(str(dest), "wb") as gz:
gz.write(b"-- MySQL dump\n")
with (
patch("app.tasks.backup_tasks.settings") as mock_settings,
patch("app.tasks.backup_tasks._backup_dir", return_value=backup_dir),
patch("app.tasks.backup_tasks._dump_mysql", side_effect=fake_mysql_dump),
patch("app.tasks.backup_tasks._upload_remote", return_value=None),
patch("app.tasks.backup_tasks._apply_retention"),
patch("app.tasks.backup_tasks._prune_remote_backups"),
patch("app.tasks.backup_tasks.SessionLocal") as mock_sl,
):
mock_settings.backup_enabled = True
mock_settings.database_url = "mysql+pymysql://user:pass@localhost/testdb"
mock_db = MagicMock()
mock_sl.return_value.__enter__ = MagicMock(return_value=mock_db)
mock_sl.return_value.__exit__ = MagicMock(return_value=False)
result = create_backup("weekly")
assert result["status"] == "ok"
assert result["filename"].endswith(".mysql.gz")
assert "weekly" in result["filename"]
def test_invalid_backup_type_defaults_to_hourly(self, tmp_path):
"""create_backup normalises unknown backup_type to 'hourly'."""
@@ -431,6 +752,7 @@ class TestCreateBackupTask:
patch("app.tasks.backup_tasks.SessionLocal") as mock_sl,
):
mock_settings.backup_enabled = True
mock_settings.database_url = f"sqlite:///{db_file}"
mock_db = MagicMock()
mock_sl.return_value.__enter__ = MagicMock(return_value=mock_db)
mock_sl.return_value.__exit__ = MagicMock(return_value=False)
@@ -549,19 +871,24 @@ class TestBackupAPIEndpoints:
assert resp.status_code == 403
def test_restore_wrong_extension(self, admin_client):
"""POST /api/admin/backup/restore rejects non-.db.gz files."""
"""POST /api/admin/backup/restore rejects files with wrong extension for current backend."""
# Default test env uses sqlite:///:memory: → expects .db.gz
resp = admin_client.post(
"/api/admin/backup/restore",
files={"file": ("backup.zip", b"data", "application/zip")},
)
assert resp.status_code == 400
def test_restore_invalid_gz_content(self, admin_client):
def test_restore_invalid_gz_content(self, admin_client, tmp_path):
"""POST /api/admin/backup/restore rejects corrupt gzip data."""
resp = admin_client.post(
"/api/admin/backup/restore",
files={"file": ("backup.db.gz", b"not gzip data at all", "application/gzip")},
)
db_file = tmp_path / "test.db"
db_file.write_bytes(b"")
with patch("app.tasks.backup_tasks._db_path", return_value=db_file):
resp = admin_client.post(
"/api/admin/backup/restore",
files={"file": ("backup.db.gz", b"not gzip data at all", "application/gzip")},
)
assert resp.status_code == 400
def test_restore_valid_archive(self, admin_client, tmp_path):
@@ -581,11 +908,11 @@ class TestBackupAPIEndpoints:
assert resp.status_code == 200
assert resp.json()["status"] == "restored"
def test_restore_non_sqlite_db(self, admin_client):
"""POST /api/admin/backup/restore returns 400 for non-SQLite database."""
sql = "BEGIN TRANSACTION;\nCOMMIT;\n"
gz_data = gzip.compress(sql.encode())
def test_restore_in_memory_sqlite(self, admin_client):
"""POST /api/admin/backup/restore returns 400 for in-memory SQLite (no file to restore to)."""
gz_data = gzip.compress(b"BEGIN TRANSACTION;\nCOMMIT;\n")
# _db_path() returns None for :memory: URLs → 400
with patch("app.tasks.backup_tasks._db_path", return_value=None):
resp = admin_client.post(
"/api/admin/backup/restore",
@@ -593,6 +920,106 @@ class TestBackupAPIEndpoints:
)
assert resp.status_code == 400
def test_restore_wrong_extension_for_postgresql(self, admin_client):
"""POST /api/admin/backup/restore returns 400 when uploading .db.gz for PostgreSQL backend."""
gz_data = gzip.compress(b"-- PostgreSQL dump")
with patch("app.config.settings") as mock_settings:
mock_settings.database_url = "postgresql://user:pass@localhost/testdb"
resp = admin_client.post(
"/api/admin/backup/restore",
files={"file": ("backup.db.gz", gz_data, "application/gzip")},
)
assert resp.status_code == 400
def test_restore_wrong_extension_for_mysql(self, admin_client):
"""POST /api/admin/backup/restore returns 400 when uploading .db.gz for MySQL backend."""
gz_data = gzip.compress(b"-- MySQL dump")
with patch("app.config.settings") as mock_settings:
mock_settings.database_url = "mysql+pymysql://user:pass@localhost/testdb"
resp = admin_client.post(
"/api/admin/backup/restore",
files={"file": ("backup.db.gz", gz_data, "application/gzip")},
)
assert resp.status_code == 400
def test_restore_postgresql_success(self, admin_client):
"""POST /api/admin/backup/restore succeeds for PostgreSQL database."""
gz_data = gzip.compress(b"-- PostgreSQL dump\n")
with (
patch("app.config.settings") as mock_settings,
patch("app.tasks.backup_tasks._restore_postgresql") as mock_restore,
):
mock_settings.database_url = "postgresql://user:pass@localhost/testdb"
resp = admin_client.post(
"/api/admin/backup/restore",
files={"file": ("backup.pgsql.gz", gz_data, "application/gzip")},
)
assert resp.status_code == 200
assert resp.json()["status"] == "restored"
mock_restore.assert_called_once()
def test_restore_mysql_success(self, admin_client):
"""POST /api/admin/backup/restore succeeds for MySQL database."""
gz_data = gzip.compress(b"-- MySQL dump\n")
with (
patch("app.config.settings") as mock_settings,
patch("app.tasks.backup_tasks._restore_mysql") as mock_restore,
):
mock_settings.database_url = "mysql+pymysql://user:pass@localhost/testdb"
resp = admin_client.post(
"/api/admin/backup/restore",
files={"file": ("backup.mysql.gz", gz_data, "application/gzip")},
)
assert resp.status_code == 200
assert resp.json()["status"] == "restored"
mock_restore.assert_called_once()
def test_restore_postgresql_runtime_error(self, admin_client):
"""POST /api/admin/backup/restore returns 500 when psql command fails."""
gz_data = gzip.compress(b"-- PostgreSQL dump\n")
with (
patch("app.config.settings") as mock_settings,
patch("app.tasks.backup_tasks._restore_postgresql", side_effect=RuntimeError("psql failed")),
):
mock_settings.database_url = "postgresql://user:pass@localhost/testdb"
resp = admin_client.post(
"/api/admin/backup/restore",
files={"file": ("backup.pgsql.gz", gz_data, "application/gzip")},
)
assert resp.status_code == 500
def test_restore_postgresql_missing_binary(self, admin_client):
"""POST /api/admin/backup/restore returns 500 when psql binary is missing."""
gz_data = gzip.compress(b"-- PostgreSQL dump\n")
with (
patch("app.config.settings") as mock_settings,
patch("app.tasks.backup_tasks._restore_postgresql", side_effect=FileNotFoundError("psql not found")),
):
mock_settings.database_url = "postgresql://user:pass@localhost/testdb"
resp = admin_client.post(
"/api/admin/backup/restore",
files={"file": ("backup.pgsql.gz", gz_data, "application/gzip")},
)
assert resp.status_code == 500
def test_restore_unsupported_backend(self, admin_client):
"""POST /api/admin/backup/restore returns 400 for an unsupported database backend."""
gz_data = gzip.compress(b"-- some dump\n")
with patch("app.config.settings") as mock_settings:
mock_settings.database_url = "mssql+pyodbc://user:pass@server/db"
resp = admin_client.post(
"/api/admin/backup/restore",
files={"file": ("backup.sql.gz", gz_data, "application/gzip")},
)
assert resp.status_code == 400
# ---------------------------------------------------------------------------
# View tests