def find_primary(self, timeout=3):
"""
Find the identity of the primary in the network and return its identity
and the current view.
"""
primary_id = None
view = None
end_time = time.time() + timeout
while time.time() < end_time:
for node in self.get_joined_nodes():
with node.client() as c:
try:
res = c.get("/node/primary_info")
if res.status_code == 200:
primary_id = res.body["primary_id"]
view = res.body["current_view"]
break
else:
assert "Primary unknown" in res.body, res
LOG.warning("Primary unknown. Retrying...")
except CCFConnectionException:
LOG.warning(
f"Could not successful connect to node {node.node_id}. Retrying..."
)
if primary_id is not None:
break
time.sleep(0.1)
if primary_id is None:
raise PrimaryNotFound
return (self._get_node_by_id(primary_id), view)
def find_recovery_tx_seqno(node):
min_recovery_seqno = 0
with node.client() as c:
r = c.get("/node/state").body.json()
if "last_recovered_seqno" not in r:
return None
min_recovery_seqno = r["last_recovered_seqno"]
ledger = ccf.ledger.Ledger(node.remote.ledger_paths(), committed_only=False)
for chunk in ledger:
_, chunk_end_seqno = chunk.get_seqnos()
if chunk_end_seqno < min_recovery_seqno:
continue
for tx in chunk:
tables = tx.get_public_domain().get_tables()
seqno = tx.get_public_domain().get_seqno()
if ccf.ledger.SERVICE_INFO_TABLE_NAME in tables:
service_status = json.loads(
tables[ccf.ledger.SERVICE_INFO_TABLE_NAME][
ccf.ledger.WELL_KNOWN_SINGLETON_TABLE_KEY
]
)["status"]
if service_status == "Open":
return seqno
return None
def wait_for_all_nodes_to_commit(self, primary=None, tx_id=None, timeout=10):
"""
Wait for all nodes to have joined the network and committed all transactions
executed on the primary.
"""
if not (primary or tx_id):
raise ValueError("Either a valid TxID or primary node should be specified")
end_time = time.time() + timeout
# If no TxID is specified, retrieve latest readable one
if tx_id == None:
while time.time() < end_time:
with primary.client() as c:
resp = c.get(
"/node/network/nodes/self"
) # Well-known read-only endpoint
tx_id = TxID(resp.view, resp.seqno)
if tx_id.valid():
break
time.sleep(0.1)
assert (
tx_id.valid()
), f"Primary {primary.node_id} has not made any progress yet ({tx_id})"
caught_up_nodes = []
logs = {}
while time.time() < end_time:
caught_up_nodes = []
for node in self.get_joined_nodes():
with node.client() as c:
logs[node.node_id] = []
resp = c.get(
f"/node/local_tx?transaction_id={tx_id}",
log_capture=logs[node.node_id],
)
if resp.status_code != 200:
# Node may not have joined the network yet, try again
break
status = TxStatus(resp.body.json()["status"])
if status == TxStatus.Committed:
caught_up_nodes.append(node)
elif status == TxStatus.Invalid:
flush_info(logs[node.node_id], None, 0)
raise RuntimeError(
f"Node {node.node_id} reports transaction ID {tx_id} is invalid and will never be committed"
)
else:
pass
if len(caught_up_nodes) == len(self.get_joined_nodes()):
break
time.sleep(0.1)
for lines in logs.values():
flush_info(lines, None, 0)
assert len(caught_up_nodes) == len(
self.get_joined_nodes()
), f"Only {len(caught_up_nodes)} (out of {len(self.get_joined_nodes())}) nodes have joined the network"
def _wait_for_app_open(self, node, timeout=3):
end_time = time.time() + timeout
while time.time() < end_time:
# As an operator, query a well-known /app endpoint to find out
# if the app has been opened to users
with node.client() as c:
r = c.get("/app/commit")
if not (r.status_code == http.HTTPStatus.NOT_FOUND.value):
return
time.sleep(0.1)
raise TimeoutError(f"Application frontend was not open after {timeout}s")
def wait_for_commit_proof(self, node, seqno, timeout=3):
# Wait that the target seqno has a commit proof on a specific node.
# This is achieved by first waiting for a commit over seqno, issuing
# a write request and then waiting for a commit over that
end_time = time.time() + timeout
while time.time() < end_time:
with node.client() as c:
r = c.get("/node/commit")
current_tx = TxID.from_str(r.body.json()["transaction_id"])
if current_tx.seqno >= seqno:
with node.client(self.consortium.get_any_active_member().
local_id) as nc:
# Using update_state_digest here as a convenient write tx
# that is app agnostic
r = nc.post("/gov/ack/update_state_digest")
assert (r.status_code == http.HTTPStatus.OK.value
), f"Error ack/update_state_digest: {r}"
c.wait_for_commit(r)
return True
time.sleep(0.1)
raise TimeoutError(
f"seqno {seqno} did not have commit proof after {timeout}s")
def wait_for_node_commit_sync(self, timeout=3):
"""
Wait for commit level to get in sync on all nodes. This is expected to
happen once CFTR has been established, in the absence of new transactions.
"""
end_time = time.time() + timeout
while time.time() < end_time:
commits = []
for node in self.get_joined_nodes():
with node.client() as c:
r = c.get("/node/commit")
assert r.status_code == http.HTTPStatus.OK.value
body = r.body.json()
commits.append(body["transaction_id"])
if [commits[0]] * len(commits) == commits:
break
time.sleep(0.1)
expected = [commits[0]] * len(commits)
if expected != commits:
for node in self.get_joined_nodes():
with node.client() as c:
r = c.get("/node/consensus")
pprint.pprint(r.body.json())
assert expected == commits, f"Multiple commit values: {commits}"
def wait_for_state(self, node, state, timeout=3):
end_time = time.time() + timeout
while time.time() < end_time:
try:
with node.client(connection_timeout=timeout) as c:
r = c.get("/node/state")
if r.body.json()["state"] == state:
break
except ConnectionRefusedError:
pass
time.sleep(0.1)
else:
raise TimeoutError(
f"Timed out waiting for state {state} on node {node.node_id}")
if state == "partOfNetwork":
self.status = ServiceStatus.OPEN
def wait_for_all_nodes_to_catch_up(self, primary, timeout=10):
"""
Wait for all nodes to have joined the network and globally replicated
all transactions globally executed on the primary (including transactions
which added the nodes).
"""
end_time = time.time() + timeout
while time.time() < end_time:
with primary.client() as c:
resp = c.get("/node/commit")
body = resp.body.json()
seqno = body["seqno"]
view = body["view"]
if seqno != 0:
break
time.sleep(0.1)
assert (
seqno != 0
), f"Primary {primary.node_id} has not made any progress yet (view: {view}, seqno: {seqno})"
caught_up_nodes = []
while time.time() < end_time:
caught_up_nodes = []
for node in self.get_joined_nodes():
with node.client() as c:
c.get("/node/commit")
resp = c.get(f"/node/local_tx?view={view}&seqno={seqno}")
if resp.status_code != 200:
# Node may not have joined the network yet, try again
break
status = TxStatus(resp.body.json()["status"])
if status == TxStatus.Committed:
caught_up_nodes.append(node)
elif status == TxStatus.Invalid:
raise RuntimeError(
f"Node {node.node_id} reports transaction ID {view}.{seqno} is invalid and will never be committed"
)
else:
pass
if len(caught_up_nodes) == len(self.get_joined_nodes()):
break
time.sleep(0.1)
assert len(caught_up_nodes) == len(
self.get_joined_nodes()
), f"Only {len(caught_up_nodes)} (out of {len(self.get_joined_nodes())}) nodes have joined the network"
def wait_for_node_commit_sync(self, timeout=3):
"""
Wait for commit level to get in sync on all nodes. This is expected to
happen once CFTR has been established, in the absence of new transactions.
"""
end_time = time.time() + timeout
while time.time() < end_time:
commits = []
for node in self.get_joined_nodes():
with node.client() as c:
r = c.get("/node/commit")
commits.append(f"{r.view}.{r.seqno}")
if [commits[0]] * len(commits) == commits:
break
time.sleep(0.1)
expected = [commits[0]] * len(commits)
assert expected == commits, f"{commits} != {expected}"
def find_primary(self, nodes=None, timeout=3, log_capture=None):
"""
Find the identity of the primary in the network and return its identity
and the current view.
"""
primary_id = None
view = None
logs = []
asked_nodes = nodes or self.get_joined_nodes()
end_time = time.time() + timeout
while time.time() < end_time:
for node in asked_nodes:
with node.client() as c:
try:
logs = []
res = c.get("/node/network",
timeout=1,
log_capture=logs)
assert res.status_code == http.HTTPStatus.OK.value, res
body = res.body.json()
view = body["current_view"]
primary_id = body["primary_id"]
if primary_id is not None:
break
except Exception:
LOG.warning(
f"Could not successfully connect to node {node.local_node_id}. Retrying..."
)
if primary_id is not None:
break
time.sleep(0.1)
if primary_id is None:
flush_info(logs, log_capture, 0)
raise PrimaryNotFound
flush_info(logs, log_capture, 0)
return (self._get_node_by_service_id(primary_id), view)
def wait_for_primary_unanimity(
self,
timeout_multiplier=DEFAULT_TIMEOUT_MULTIPLIER,
min_view=None):
timeout = self.observed_election_duration * timeout_multiplier
LOG.info(
f"Waiting up to {timeout}s for all nodes to agree on the primary")
start_time = time.time()
end_time = start_time + timeout
primaries = []
while time.time() < end_time:
primaries = []
for node in self.get_joined_nodes():
logs = []
try:
primary, view = self.find_primary(nodes=[node],
log_capture=logs)
if min_view is None or view > min_view:
primaries.append(primary)
except PrimaryNotFound:
pass
# Stop checking once all primaries are the same
if (len(self.get_joined_nodes()) == len(primaries)
and len(set(primaries)) <= 1):
break
time.sleep(0.1)
all_good = (len(self.get_joined_nodes()) == len(primaries)
and len(set(primaries)) <= 1)
if not all_good:
flush_info(logs)
for node in self.get_joined_nodes():
with node.client() as c:
r = c.get("/node/consensus")
pprint.pprint(r.body.json())
assert all_good, f"Multiple primaries: {primaries}"
delay = time.time() - start_time
LOG.info(
f"Primary unanimity after {delay}s: {primaries[0].local_node_id} ({primaries[0].node_id})"
)
return primaries[0]
def find_primary(self, timeout=3, log_capture=None):
"""
Find the identity of the primary in the network and return its identity
and the current view.
"""
primary_id = None
view = None
logs = []
end_time = time.time() + timeout
while time.time() < end_time:
for node in self.get_joined_nodes():
with node.client() as c:
try:
logs = []
res = c.get("/node/network", log_capture=logs)
assert res.status_code == 200, res
body = res.body.json()
primary_id = body["primary_id"]
view = body["current_view"]
view_change_in_progress = body[
"view_change_in_progress"]
if primary_id is not None:
break
except CCFConnectionException:
LOG.warning(
f"Could not successfully connect to node {node.node_id}. Retrying..."
)
if primary_id is not None:
break
time.sleep(0.1)
if primary_id is None or view_change_in_progress:
flush_info(logs, log_capture, 0)
raise PrimaryNotFound
flush_info(logs, log_capture, 0)
return (self._get_node_by_id(primary_id), view)