<s> """<STR_LIT>""" <EOL> import json <EOL> import random <EOL> DECODER = "<STR_LIT:utf-8>" <EOL> PARTITIONS = "<STR_LIT>" <EOL> BROKER_IDS = "<STR_LIT>" <EOL> BROKER_TOPICS = "<STR_LIT>" <EOL> TOPIC_CONFIG = "<STR_LIT>" <EOL> CONTROLLER = "<STR_LIT>" <EOL> BROKER_SEQUENCE_ID = "<STR_LIT>" <EOL> STATE = "<STR_LIT>" <EOL> class KafkaZkHelper ( object ) : <EOL> """<STR_LIT>""" <EOL> def __init__ ( self , zk_client , zk_paths ) : <EOL> """<STR_LIT>""" <EOL> self . zk_client = zk_client <EOL> self . zk_paths = zk_paths <EOL> def get_controller ( self ) : <EOL> """<STR_LIT>""" <EOL> zook = self . zk_client <EOL> controller_path = self . zk_paths [ CONTROLLER ] <EOL> if zook . exists ( controller_path ) : <EOL> data , stat = zook . get ( controller_path ) <EOL> data_values = data . decode ( DECODER ) . split ( '<STR_LIT:U+002C>' ) <EOL> broker_id = data_values [ <NUM_LIT:1> ] . split ( '<STR_LIT::>' ) [ <NUM_LIT:1> ] <EOL> return self . get_host ( broker_id ) <EOL> def get_host ( self , broker_id ) : <EOL> """<STR_LIT>""" <EOL> zook = self . zk_client <EOL> broker_id_path = self . zk_paths [ BROKER_IDS ] <EOL> broker_path = broker_id_path + "<STR_LIT:/>" + str ( broker_id ) <EOL> if zook . exists ( broker_path ) : <EOL> data , stat = zook . get ( broker_path ) <EOL> return json . loads ( data ) [ "<STR_LIT:host>" ] <EOL> def get_topics ( self ) : <EOL> """<STR_LIT>""" <EOL> zook = self . zk_client <EOL> broker_topics_path = self . zk_paths [ BROKER_TOPICS ] <EOL> if zook . exists ( broker_topics_path ) : <EOL> topics = zook . get_children ( broker_topics_path ) <EOL> return topics <EOL> def get_number_of_partitions ( self , topic ) : <EOL> """<STR_LIT>""" <EOL> zook = self . zk_client <EOL> broker_topics_path = self . zk_paths [ BROKER_TOPICS ] <EOL> path = broker_topics_path + "<STR_LIT:/>" + str ( topic ) + "<STR_LIT:/>" + PARTITIONS <EOL> if zook . exists ( path ) : <EOL> partitions = zook . get_children ( path ) <EOL> return partitions . __len__ ( ) <EOL> def get_leader ( self , topic , partition ) : <EOL> """<STR_LIT>""" <EOL> zook = self . zk_client <EOL> broker_topics_path = self . zk_paths [ BROKER_TOPICS ] <EOL> path = ( broker_topics_path + "<STR_LIT:/>" + str ( topic ) + "<STR_LIT:/>" + <EOL> PARTITIONS + "<STR_LIT:/>" + str ( partition ) + STATE ) <EOL> if zook . exists ( path ) : <EOL> data , stat = zook . get ( path ) <EOL> data_values = data . decode ( DECODER ) . split ( '<STR_LIT:U+002C>' ) <EOL> leader_id = data_values [ <NUM_LIT:1> ] . split ( '<STR_LIT::>' ) [ <NUM_LIT:1> ] <EOL> return self . get_host ( leader_id ) <EOL> def get_isr ( self , topic , partition ) : <EOL> """<STR_LIT>""" <EOL> zook = self . zk_client <EOL> broker_topics_path = self . zk_paths [ BROKER_TOPICS ] <EOL> path = ( broker_topics_path + "<STR_LIT:/>" + str ( topic ) + <EOL> "<STR_LIT:/>" + PARTITIONS + "<STR_LIT:/>" + str ( partition ) + STATE ) <EOL> if zook . exists ( path ) : <EOL> data , stat = zook . get ( path ) <EOL> data_values = data . decode ( DECODER ) . split ( '<STR_LIT::>' ) <EOL> isr = str ( data_values [ <NUM_LIT:5> ] ) <EOL> length = isr . __len__ ( ) <EOL> broker_list = isr [ <NUM_LIT:1> : length - <NUM_LIT:2> ] . split ( '<STR_LIT:U+002C>' ) <EOL> isr_list = [ ] <EOL> for broker in broker_list : <EOL> isr_list . append ( self . get_host ( broker ) ) <EOL> return isr_list <EOL> def get_topic ( self ) : <EOL> """<STR_LIT>""" <EOL> topics = self . get_topics ( ) <EOL> return random . choice ( topics ) <EOL> def get_partition ( self , topic ) : <EOL> """<STR_LIT>""" <EOL> zook = self . zk_client <EOL> broker_topics_path = self . zk_paths [ BROKER_TOPICS ] <EOL> path = broker_topics_path + "<STR_LIT:/>" + str ( topic ) + "<STR_LIT:/>" + PARTITIONS <EOL> if zook . exists ( path ) : <EOL> partitions = zook . get_children ( path ) <EOL> return random . choice ( partitions ) <EOL> def get_all_hosts ( self ) : <EOL> """<STR_LIT>""" <EOL> zook = self . zk_client <EOL> broker_id_path = self . zk_paths [ BROKER_IDS ] <EOL> if zook . exists ( broker_id_path ) : <EOL> broker_ids = zook . get_children ( broker_id_path ) <EOL> brokers = [ ] <EOL> for broker_id in broker_ids : <EOL> brokers . append ( self . get_host ( broker_id ) ) <EOL> return brokers </s>
