def test_server_goes_down_sanity(params_from_base_test_setup):
"""
1. Start with a two node couchbase server cluster
2. Starting adding docs
3. Kill one of the server nodes and signal completion
4. Stop adding docs
5. Verify that that the expected docs are present and in the changes feed.
6. Start server again and add to cluster
"""
cluster_config = params_from_base_test_setup["cluster_config"]
mode = params_from_base_test_setup["mode"]
cluster_helper = ClusterKeywords()
sg_conf_name = "sync_gateway_default_functional_tests"
sg_conf_path = sync_gateway_config_path_for_mode(sg_conf_name, mode)
cluster_helper.reset_cluster(cluster_config=cluster_config,
sync_gateway_config=sg_conf_path)
topology = cluster_helper.get_cluster_topology(cluster_config)
admin_sg = topology["sync_gateways"][0]["admin"]
sg_url = topology["sync_gateways"][0]["public"]
coucbase_servers = topology["couchbase_servers"]
cbs_one_url = coucbase_servers[0]
cbs_two_url = coucbase_servers[1]
log_info("Running: 'test_server_goes_down_sanity'")
log_info("cluster_config: {}".format(cluster_config))
log_info("admin_sg: {}".format(admin_sg))
log_info("sg_url: {}".format(sg_url))
log_info("cbs_one_url: {}".format(cbs_one_url))
log_info("cbs_two_url: {}".format(cbs_two_url))
sg_db = "db"
num_docs = 100
sg_user_name = "seth"
sg_user_password = "******"
channels = ["ABC", "CBS"]
client = MobileRestClient()
main_server = CouchbaseServer(cbs_one_url)
flakey_server = CouchbaseServer(cbs_two_url)
client.create_user(admin_sg, sg_db, sg_user_name, sg_user_password, channels=channels)
session = client.create_session(admin_sg, sg_db, sg_user_name)
# Stop second server
flakey_server.stop()
# Try to add 100 docs in a loop until all succeed, if the never do, fail with timeout
errors = num_docs
# Wait 30 seconds for auto failover
# (Minimum value suggested - http://docs.couchbase.com/admin/admin/Tasks/tasks-nodeFailover.html)
# + 15 seconds to add docs
timeout = 45
start = time.time()
successful_add = False
while not successful_add:
# Fail tests if all docs do not succeed before timeout
if (time.time() - start) > timeout:
# Bring server back up before failing the test
flakey_server.start()
main_server.rebalance_in(coucbase_servers, flakey_server)
raise TimeoutError("Failed to successfully put docs before timeout")
try:
docs = client.add_docs(url=sg_url, db=sg_db, number=num_docs, id_prefix=None, auth=session, channels=channels)
# If the above add doc does not throw, it was a successfull add.
successful_add = True
except requests.exceptions.HTTPError as he:
log_info("Failed to add docs: {}".format(he))
log_info("Seeing: {} errors".format(errors))
time.sleep(1)
assert len(docs) == 100
client.verify_docs_present(url=sg_url, db=sg_db, expected_docs=docs, auth=session)
try:
client.verify_docs_in_changes(url=sg_url, db=sg_db, expected_docs=docs, auth=session, polling_interval=5)
except keywords.exceptions.TimeoutException:
# timeout verifying docs. Bring server back in to restore topology, then fail
# Failing due to https://github.com/couchbase/sync_gateway/issues/2197
flakey_server.start()
main_server.recover(flakey_server)
main_server.rebalance_in(coucbase_servers, flakey_server)
raise keywords.exceptions.TimeoutException("Failed to get all changes")
# Test succeeded without timeout, bring server back into topology
flakey_server.start()
main_server.recover(flakey_server)
main_server.rebalance_in(coucbase_servers, flakey_server)
# Make sure all docs were not added before server was
log_info("test_server_goes_down_sanity complete!")
def test_server_goes_down_rebuild_channels(params_from_base_test_setup):
"""
1. Start with a two node couchbase server cluster
2. Starting adding docs
3. Kill one of the server nodes and signal completion
4. Stop adding docs
5. Verify that that the expected docs are present and in the changes feed.
6. Start server again and add to cluster
"""
cluster_config = params_from_base_test_setup["cluster_config"]
mode = params_from_base_test_setup["mode"]
cluster_helper = ClusterKeywords()
sg_conf_name = "sync_gateway_default_functional_tests"
sg_conf_path = sync_gateway_config_path_for_mode(sg_conf_name, mode)
cluster_helper.reset_cluster(cluster_config=cluster_config,
sync_gateway_config=sg_conf_path)
topology = cluster_helper.get_cluster_topology(cluster_config)
admin_sg = topology["sync_gateways"][0]["admin"]
sg_url = topology["sync_gateways"][0]["public"]
coucbase_servers = topology["couchbase_servers"]
cbs_one_url = coucbase_servers[0]
cbs_two_url = coucbase_servers[1]
log_info("Running: 'test_server_goes_down_sanity'")
log_info("cluster_config: {}".format(cluster_config))
log_info("admin_sg: {}".format(admin_sg))
log_info("sg_url: {}".format(sg_url))
log_info("cbs_one_url: {}".format(cbs_one_url))
log_info("cbs_two_url: {}".format(cbs_two_url))
sg_db = "db"
num_docs = 100
admin_user_info = userinfo.UserInfo(
name="admin",
password="******",
channels=["ABC"],
roles=[]
)
seth_user_info = userinfo.UserInfo(
name="seth",
password="******",
channels=["ABC"],
roles=[]
)
client = MobileRestClient()
main_server = CouchbaseServer(cbs_one_url)
flakey_server = CouchbaseServer(cbs_two_url)
admin_auth = client.create_user(
admin_sg,
sg_db,
admin_user_info.name,
admin_user_info.password,
channels=admin_user_info.channels
)
client.create_user(
admin_sg,
sg_db,
seth_user_info.name,
seth_user_info.password,
channels=seth_user_info.channels
)
seth_session = client.create_session(admin_sg, sg_db, seth_user_info.name)
# allow any user docs to make it to changes
initial_changes = client.get_changes(url=sg_url, db=sg_db, since=0, auth=seth_session)
# push docs from admin
docs = client.add_docs(
url=sg_url,
db=sg_db,
number=num_docs,
id_prefix=None,
channels=admin_user_info.channels,
auth=admin_auth
)
assert len(docs) == num_docs
client.verify_docs_in_changes(url=sg_url, db=sg_db, expected_docs=docs, auth=seth_session)
changes_before_failover = client.get_changes(url=sg_url, db=sg_db, since=initial_changes["last_seq"], auth=seth_session)
assert len(changes_before_failover["results"]) == num_docs
# Stop server via 'service stop'
flakey_server.stop()
start = time.time()
while True:
# Fail tests if all docs do not succeed before timeout
if (time.time() - start) > 60:
# Bring server back up before failing the test
flakey_server.start()
main_server.recover(flakey_server)
main_server.rebalance_in(coucbase_servers, flakey_server)
raise keywords.exceptions.TimeoutError("Failed to rebuild changes")
try:
# Poll until failover happens (~30 second)
client.verify_docs_in_changes(url=sg_url, db=sg_db, expected_docs=docs, auth=seth_session)
# changes requests succeeded, exit loop
break
except requests.exceptions.HTTPError:
# Changes will fail until failover of the down server happens. Wait and try again.
log_info("/db/_changes failed due to server down. Retrying ...")
time.sleep(1)
# Verify no new changes
changes = client.get_changes(
url=sg_url,
db=sg_db,
since=changes_before_failover["last_seq"],
auth=seth_session,
feed="normal"
)
assert len(changes["results"]) == 0
# Check that all changes are intact from initial changes request
changes = client.get_changes(url=sg_url, db=sg_db, since=initial_changes["last_seq"], auth=seth_session)
assert len(changes["results"]) == num_docs
coucbase_servers = topology["couchbase_servers"]
# Test succeeded without timeout, bring server back into topology
flakey_server.start()
main_server.recover(flakey_server)
main_server.rebalance_in(coucbase_servers, flakey_server)
