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restore_workflows.py
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restore_workflows.py
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import paramiko_helper
from file_helper import *
from mongo_helper import *
from noise_helper import *
from private_conf import config
import time
import logging
import pymongo
from pymongo.errors import AutoReconnect
logger = logging.getLogger("qa.{}".format(__name__))
class RestoreTester(object):
restore_id = None
group_id = None
cluster_id = None
is_pit = False
pit = None
snapshot_id = None
storage_engine = None
dir_context = "restores"
def __init__(self, restore_client, group_id, cluster_id, options):
self.group_id = group_id
self.cluster_id = cluster_id
self.restore_client = restore_client
if "point_in_time" in options and options["point_in_time"] is not None:
self.is_pit = True
self.pit = options["point_in_time"]
else:
self.snapshot_id = options["snapshot_id"]
if "wired_tiger" in options and options["wired_tiger"]:
self.storage_engine = "wiredTiger" if options["wired_tiger"] else "mmapv1"
def request_restore(self):
pass
def wait_for_restore(self):
while True:
if self.restore_client.is_job_finished(self.group_id, self.cluster_id, self.restore_id):
break
time.sleep(10)
def get_restore(self):
pass
def check_hashes(self):
pass
def prepare_restore(self):
pass
def start_mongod(self):
pass
def get_mongo_connection(self):
pass
def kill_mongod(self):
pass
def assert_contents(self, mongo_client):
pass
def issue_kill_command(self, mongo_client):
pass
def check_restore_contents(self):
try:
with self.get_mongo_connection() as client:
self.assert_contents(client)
self.issue_kill_command(client)
except AutoReconnect as e:
pass
finally:
self.kill_mongod()
def clean_up(self):
pass
def run(self):
results = self.request_restore()
restore_job_doc = results["results"][0]
self.restore_id = restore_job_doc["id"]
self.wait_for_restore()
self.get_restore()
self.check_hashes()
self.prepare_restore()
self.start_mongod()
self.check_restore_contents()
self.clean_up()
class LocalPullRestoreTester(RestoreTester):
saved_file = None
p = None
untarred_path = None
def request_restore(self):
if self.is_pit:
restore_job = self.restore_client.create_http_pit_restore(self.group_id, self.cluster_id, self.pit)
else:
restore_job = self.restore_client.create_http_snapshot_restore(self.group_id, self.cluster_id, self.snapshot_id)
return restore_job
def get_restore(self):
restore_job = self.restore_client.get_restore_job(self.group_id, self.cluster_id, self.restore_id)
pull_restore_url = restore_job["delivery"]["url"]
self.saved_file = download_file(self.dir_context, pull_restore_url)
def check_hashes(self):
# Need to get the job again now that the hashes are calculated.
restore_job = self.restore_client.get_restore_job(self.group_id, self.cluster_id, self.restore_id)
check_hash(restore_job["hashes"][0]["hash"], self.saved_file)
def prepare_restore(self):
self.untarred_path = untar_file(self.saved_file, self.dir_context)
def start_mongod(self):
self.p = start_mongo_process(self.untarred_path, self.storage_engine, 28001)
def get_mongo_connection(self):
head_conn = pymongo.MongoClient(port=28001, connectTimeoutMS=60000)
return head_conn
def kill_mongod(self):
self.p.terminate()
def issue_kill_command(self, mongo_client):
admin_db = mongo_client.admin
admin_db.command("shutdown")
def assert_contents(self, mongo_client):
assert_known_values(mongo_client.test.coll)
def clean_up(self):
pass
class ScpRestoreTester(RestoreTester):
scp_details = None
ssh_client = None
saved_file = None
head_path = None
remote_mongo = None
is_individual = False
def __init__(self, restore_client, group_id, cluster_id, scp_details, options):
super(ScpRestoreTester, self).__init__(restore_client, group_id, cluster_id, options)
self.scp_details = scp_details
self.ssh_client = paramiko_helper.get_client(config["ssh_credentials"]["scp_target"])
def request_restore(self):
if self.is_pit:
restore_job = self.restore_client.create_scp_pit_restore(self.group_id, self.cluster_id, self.pit, self.scp_details, self.is_individual)
else:
restore_job = self.restore_client.create_scp_snapshot_restore(self.group_id, self.cluster_id, self.snapshot_id, self.scp_details, self.is_individual)
return restore_job
def get_restore(self):
# NO-OP for SCP restores.
pass
def check_hashes(self):
restore_job = self.restore_client.get_restore_job(self.group_id, self.cluster_id, self.restore_id)
hashes = restore_job["hashes"]
if not self.is_individual:
self.saved_file = hashes[0]["fileName"]
else:
self.dir_context = "{}/{}".format(self.dir_context, paramiko_helper.get_dir_with_substring(self.ssh_client, self.dir_context, self.restore_id))
self.head_path = self.dir_context
for hash_obj in hashes:
sha1sum = paramiko_helper.sha_file(self.ssh_client, self.dir_context, hash_obj["fileName"])
if sha1sum != hash_obj["hash"]:
logger.error("Expected sum {}, but got {}".format(hash_obj["hash"], sha1sum))
def prepare_restore(self):
if not self.is_individual:
paramiko_helper.untar_file(self.ssh_client, self.dir_context, self.saved_file)
self.head_path = "{}/{}".format(self.dir_context, self.saved_file.partition(".")[0])
# No-Op for individual restores
def start_mongod(self):
self.remote_mongo = paramiko_helper.RemoteMongo(self.ssh_client, self.head_path, storage_engine=self.storage_engine, port=8089)
self.remote_mongo.start()
def get_mongo_connection(self):
try:
head_conn = pymongo.MongoClient(host=config["ssh_credentials"]["scp_target"]["hostname"], port=8089, connectTimeoutMS=60000)
return head_conn
except ServerSelectionTimeoutError as e:
logger.error("Could not connect to head - {}".format(e))
def kill_mongod(self):
self.remote_mongo.kill()
def issue_kill_command(self, mongo_client):
pass
def assert_contents(self, mongo_client):
count = mongo_client.test.coll.find().count()
if count != 3:
logger.error("Wrong number of docs found.")
logger.info("Found {} docs. As expected".format(count))
assert_known_values(mongo_client.test.coll)
def clean_up(self):
pass