def validate_and_find_master_dns(session, parsed_globals, cluster_id):
"""
Utility method for ssh, socks, put and get command.
Check if the cluster to be connected to is
terminated or being terminated.
Check if the cluster is running.
Find master instance public dns of a given cluster.
Return the latest created master instance public dns name.
Throw MasterDNSNotAvailableError or ClusterTerminatedError.
"""
cluster_state = emrutils.get_cluster_state(session, parsed_globals,
cluster_id)
if cluster_state in constants.TERMINATED_STATES:
raise exceptions.ClusterTerminatedError
emr = emrutils.get_client(session, parsed_globals)
try:
cluster_running_waiter = emr.get_waiter('cluster_running')
if cluster_state in constants.STARTING_STATES:
print("Waiting for the cluster to start.")
cluster_running_waiter.wait(ClusterId=cluster_id)
except WaiterError:
raise exceptions.MasterDNSNotAvailableError
return emrutils.find_master_public_dns(session=session,
cluster_id=cluster_id,
parsed_globals=parsed_globals)
def validate_and_find_master_dns(session, parsed_globals, cluster_id):
"""
Utility method for ssh, socks, put and get command.
Check if the cluster to be connected to is
terminated or being terminated.
Check if the cluster is running.
Find master instance public dns of a given cluster.
Return the latest created master instance public dns name.
Throw MasterDNSNotAvailableError or ClusterTerminatedError.
"""
cluster_state = emrutils.get_cluster_state(
session, parsed_globals, cluster_id)
if cluster_state in constants.TERMINATED_STATES:
raise exceptions.ClusterTerminatedError
emr = emrutils.get_client(session, parsed_globals)
try:
cluster_running_waiter = emr.get_waiter('cluster_running')
if cluster_state in constants.STARTING_STATES:
print("Waiting for the cluster to start.")
cluster_running_waiter.wait(ClusterId=cluster_id)
except WaiterError:
raise exceptions.MasterDNSNotAvailableError
return emrutils.find_master_dns(
session=session, cluster_id=cluster_id,
parsed_globals=parsed_globals)