Class: KafkaCommand::Broker

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Defined in:
app/models/kafka_command/broker.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(broker) ⇒ Broker

Returns a new instance of Broker.



14
15
16
 
# File 'app/models/kafka_command/broker.rb', line 14

def initialize(broker)
  @broker = broker
end

Instance Attribute Details

#broker ⇒ Object (readonly)

Returns the value of attribute broker.



8
9
10
 
# File 'app/models/kafka_command/broker.rb', line 8

def broker
  @broker
end

Instance Method Details

#as_json ⇒ Object 



22
23
24
25
26
27
 
# File 'app/models/kafka_command/broker.rb', line 22

def as_json(*)
  {
    id: node_id,
    host: host_with_port
  }
end

#connected? ⇒ Boolean

Returns:

  • (Boolean) 


40
41
42
43
44
45
 
# File 'app/models/kafka_command/broker.rb', line 40

def connected?
  @broker.api_versions # simple request to check connections
  true
rescue Kafka::ConnectionError
  false
end

#host_with_port ⇒ Object 



18
19
20
 
# File 'app/models/kafka_command/broker.rb', line 18

def host_with_port
  "#{host}:#{port}"
end

#offsets_for(group, topic) ⇒ Object

needs to be the group coordinator to work



30
31
32
33
34
35
36
37
38
 
# File 'app/models/kafka_command/broker.rb', line 30

def offsets_for(group, topic)
  offsets = @broker.fetch_offsets(
    group_id: group.group_id,
    topics: { topic.name => topic.partitions.map(&:partition_id) }
  ).topics[topic.name]

  offsets.keys.each { |partition_id| offsets[partition_id] = offsets[partition_id].offset }
  offsets
end