kafka/tools/protocol/requests/create_topics_v0.py
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from kafka.tools.protocol.requests import BaseRequest, ArgumentError
from kafka.tools.protocol.responses.create_topics_v0 import CreateTopicsV0Response
def _parse_partition(topic, partition_id, replica_str):
if topic['num_partitions'] != -1:
raise ArgumentError("Cannot specify num_partitions and replication_factor when using an explicit partition and replica list")
try:
topic['replica_assignment'].append({'partition_id': partition_id, 'replicas': [int(bid) for bid in replica_str.split("|")]})
except ValueError:
raise ArgumentError("replica_id must be an integer")
def _parse_kv_args(topic, topic_args):
for targ in topic_args:
arg_parts = targ.split("=")
if len(arg_parts) != 2:
raise ArgumentError("was expecting a 'key=value'")
try:
partition_id = int(arg_parts[0])
_parse_partition(topic, partition_id, arg_parts[1])
except ValueError:
topic['configs'].append({'config_key': arg_parts[0], 'config_value': arg_parts[1]})
def _parse_remaining_args(topic, targs):
if targs[0].isdigit() and targs[1].isdigit():
topic['num_partitions'] = int(targs[0])
topic['replication_factor'] = int(targs[1])
_parse_kv_args(topic, targs[2:])
else:
_parse_kv_args(topic, targs)
if (topic['num_partitions'] == -1) and (len(topic['replica_assignment']) == 0):
raise ArgumentError("You must specify either num_partitions and replication_factor OR an explicit replica_assignment")
class CreateTopicsV0Request(BaseRequest):
api_key = 19
api_version = 0
cmd = "CreateTopics"
response = CreateTopicsV0Response
supports_cli = True
help_string = ("Request: {0}V{1}\n".format(cmd, api_version) +
"Format: {0}V{1} timeout (topic_name,num_partitions,replication_factor[,config=value]... )...\n".format(cmd, api_version) +
" {0}V{1} timeout (topic_name,(partition_id=replica_id[|replica_id]...)...[,config=value]... )...\n".format(cmd, api_version) +
"Description: Create the topics with the specified values. Note that EITHER num_partitions\n" +
" and replication_factor, OR replica_assignment, MUST be provided for each topic\n" +
" but not both\n" +
"Examples: {0}V{1} 30 ExampleTopicName,4,2 OtherExampleTopic,4,2\n".format(cmd, api_version) +
" {0}V{1} 30 ExampleTopicName,4,2,retention.ms=3600000\n".format(cmd, api_version) +
" {0}V{1} 30 ExampleTopicName,0=1|2,1=2|3,2=3|1,3=1|3\n".format(cmd, api_version))
schema = [
{'name': 'topics',
'type': 'array',
'item_type': [
{'name': 'topic', 'type': 'string'},
{'name': 'num_partitions', 'type': 'int32'},
{'name': 'replication_factor', 'type': 'int16'},
{'name': 'replica_assignment',
'type': 'array',
'item_type': [
{'name': 'partition_id', 'type': 'int32'},
{'name': 'replicas', 'type': 'array', 'item_type': 'int32'},
]},
{'name': 'configs',
'type': 'array',
'item_type': [
{'name': 'config_key', 'type': 'string'},
{'name': 'config_value', 'type': 'string'},
]},
]},
{'name': 'timeout', 'type': 'int32'},
]
@classmethod
def process_arguments(cls, cmd_args):
if (len(cmd_args) < 2) or (not cmd_args[0].isdigit()):
raise ArgumentError("The first argument must be an integer, and at least one topic definition must be provided")
values = {'topics': [], 'timeout': int(cmd_args[0])}
for topic_def in cmd_args[1:]:
tparts = topic_def.split(",")
topic = {'topic': tparts[0],
'num_partitions': -1,
'replication_factor': -1,
'replica_assignment': [],
'configs': []}
_parse_remaining_args(topic, tparts[1:])
values['topics'].append(topic)
return values