Add pg_probackup plugin (#92)

Author: demonolock

setup.py

@@ -27,7 +27,7 @@
     readme = f.read()
 
 setup(
-    version='1.9.3',
+    version='1.10.0',
     name='testgres',
     packages=['testgres', 'testgres.operations', 'testgres.helpers'],
     description='Testing utility for PostgreSQL and its extensions',

testgres/plugins/__init__.py

@@ -0,0 +1,9 @@
+from pg_probackup2.gdb import GDBobj
+from pg_probackup2.app import ProbackupApp, ProbackupException
+from pg_probackup2.init_helpers import init_params
+from pg_probackup2.storage.fs_backup import FSTestBackupDir
+from pg_probackup2.storage.s3_backup import S3TestBackupDir
+
+__all__ = [
+    "ProbackupApp", "ProbackupException", "init_params", "FSTestBackupDir", "S3TestBackupDir", "GDBobj"
+]

testgres/plugins/pg_probackup2/README.md

@@ -0,0 +1,65 @@
+# testgres - pg_probackup2
+
+Ccontrol and testing utility for [pg_probackup2](https://github.com/postgrespro/pg_probackup). Python 3.5+ is supported.
+
+
+## Installation
+
+To install `testgres`, run:
+
+```
+pip install testgres-pg_probackup
+```
+
+We encourage you to use `virtualenv` for your testing environment.
+The package requires testgres~=1.9.3.
+
+## Usage
+
+### Environment
+
+> Note: by default testgres runs `initdb`, `pg_ctl`, `psql` provided by `PATH`.
+
+There are several ways to specify a custom postgres installation:
+
+* export `PG_CONFIG` environment variable pointing to the `pg_config` executable;
+* export `PG_BIN` environment variable pointing to the directory with executable files.
+
+Example:
+
+```bash
+export PG_BIN=$HOME/pg/bin
+python my_tests.py
+```
+
+
+### Examples
+
+Here is an example of what you can do with `testgres-pg_probackup2`:
+
+```python
+# You can see full script here plugins/pg_probackup2/pg_probackup2/tests/basic_test.py
+def test_full_backup(self):
+    # Setting up a simple test node
+    node = self.pg_node.make_simple('node', pg_options={"fsync": "off", "synchronous_commit": "off"})
+
+    # Initialize and configure Probackup
+    self.pb.init()
+    self.pb.add_instance('node', node)
+    self.pb.set_archiving('node', node)
+
+    # Start the node and initialize pgbench
+    node.slow_start()
+    node.pgbench_init(scale=100, no_vacuum=True)
+
+    # Perform backup and validation
+    backup_id = self.pb.backup_node('node', node)
+    out = self.pb.validate('node', backup_id)
+
+    # Check if the backup is valid
+    self.assertIn(f"INFO: Backup {backup_id} is valid", out)
+```
+
+## Authors
+
+[Postgres Professional](https://postgrespro.ru/about)