mirror of
https://github.com/aljazceru/plugins.git
synced 2025-12-19 14:14:20 +01:00
138 lines
4.3 KiB
Python
138 lines
4.3 KiB
Python
from flaky import flaky
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from pyln.client import RpcError
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from pyln.testing.fixtures import *
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import os
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import pytest
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import subprocess
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plugin_dir = os.path.dirname(__file__)
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plugin_path = os.path.join(plugin_dir, "backup.py")
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cli_path = os.path.join(os.path.dirname(__file__), "backup-cli")
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def test_start(node_factory, directory):
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bpath = os.path.join(directory, 'lightning-1', 'regtest')
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bdest = 'file://' + os.path.join(bpath, 'backup.dbak')
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os.makedirs(bpath)
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subprocess.check_call([cli_path, "init", bpath, bdest])
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opts = {
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'plugin': plugin_path,
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'backup-destination': bdest,
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}
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l1 = node_factory.get_node(options=opts, cleandir=False)
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l1.daemon.wait_for_log(r'backup.py')
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# Restart the node a couple of times, to check that we can resume normally
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for i in range(5):
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l1.restart()
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l1.daemon.wait_for_log(r'Versions match up')
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def test_tx_abort(node_factory, directory):
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"""Simulate a crash between hook call and DB commit.
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We simulate this by updating the data_version var in the database before
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restarting the node. This desyncs the node from the backup, and restoring
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may not work (depending on which transaction was pretend-rolled-back), but
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continuing should work fine, since it can happen that we crash just
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inbetween the hook call and the DB transaction.
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"""
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bpath = os.path.join(directory, 'lightning-1', 'regtest')
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bdest = 'file://' + os.path.join(bpath, 'backup.dbak')
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os.makedirs(bpath)
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subprocess.check_call([cli_path, "init", bpath, bdest])
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opts = {
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'plugin': plugin_path,
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'backup-destination': bdest,
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}
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l1 = node_factory.get_node(options=opts, cleandir=False)
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l1.stop()
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print(l1.db.query("SELECT * FROM vars;"))
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# Now fudge the data_version:
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l1.db.execute("UPDATE vars SET intval = intval - 1 WHERE name = 'data_version'")
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print(l1.db.query("SELECT * FROM vars;"))
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l1.restart()
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l1.daemon.wait_for_log(r'Last changes not applied')
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@flaky
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def test_failing_restore(nf, directory):
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"""The node database is having memory loss, make sure we abort.
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We simulate a loss of transactions by manually resetting the data_version
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in the database back to n-2, which is non-recoverable.
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"""
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bpath = os.path.join(directory, 'lightning-1', 'regtest')
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bdest = 'file://' + os.path.join(bpath, 'backup.dbak')
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os.makedirs(bpath)
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subprocess.check_call([cli_path, "init", bpath, bdest])
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opts = {
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'plugin': plugin_path,
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'backup-destination': bdest,
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}
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l1 = node_factory.get_node(options=opts, cleandir=False)
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l1.stop()
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# Now fudge the data_version:
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l1.db.execute("UPDATE vars SET intval = intval - 2 WHERE name = 'data_version'")
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with pytest.raises(Exception):
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l1.start()
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l1.daemon.proc.wait()
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assert(l1.daemon.is_in_log(r'lost some state') is not None)
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def test_intermittent_backup(node_factory, directory):
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"""Simulate intermittent use of the backup, or an old file backup.
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"""
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bpath = os.path.join(directory, 'lightning-1', 'regtest')
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bdest = 'file://' + os.path.join(bpath, 'backup.dbak')
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os.makedirs(bpath)
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subprocess.check_call([cli_path, "init", bpath, bdest])
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opts = {
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'plugin': plugin_path,
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'backup-destination': bdest,
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}
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l1 = node_factory.get_node(options=opts, cleandir=False)
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# Now start without the plugin. This should work fine.
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del l1.daemon.opts['plugin']
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del l1.daemon.opts['backup-destination']
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l1.restart()
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# Now restart adding the plugin again, and it should fail due to gaps in
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# the backup.
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l1.stop()
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with pytest.raises(Exception):
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l1.daemon.opts.update(opts)
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l1.start()
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l1.daemon.proc.wait()
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assert(l1.daemon.is_in_log(r'Backup is out of date') is not None)
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def test_restore(nf, directory):
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bpath = os.path.join(directory, 'lightning-1', 'regtest')
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bdest = 'file://' + os.path.join(bpath, 'backup.dbak')
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os.makedirs(bpath)
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subprocess.check_call([cli_path, "init", bpath, bdest])
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opts = {
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'plugin': plugin_path,
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'backup-destination': bdest,
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}
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l1 = nf.get_node(options=opts, cleandir=False)
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l1.stop()
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rdest = os.path.join(bpath, 'lightningd.sqlite.restore')
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subprocess.check_call([cli_path, "restore", bdest, rdest])
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