Class: Kafka::Compressor
- Inherits:
-
Object
- Object
- Kafka::Compressor
- Defined in:
- lib/kafka/compressor.rb
Overview
Compresses message sets using a specified codec.
A message set is only compressed if its size meets the defined threshold.
Instrumentation
Whenever a message set is compressed, the notification
compress.compressor.kafka
will be emitted with the following payload:
message_count
– the number of messages in the message set.uncompressed_bytesize
– the byte size of the original data.compressed_bytesize
– the byte size of the compressed data.
Instance Method Summary collapse
- #compress(message_set) ⇒ Protocol::MessageSet
-
#initialize(codec_name: nil, threshold: 1, instrumenter:) ⇒ Compressor
constructor
A new instance of Compressor.
Constructor Details
#initialize(codec_name: nil, threshold: 1, instrumenter:) ⇒ Compressor
Returns a new instance of Compressor.
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# File 'lib/kafka/compressor.rb', line 23 def initialize(codec_name: nil, threshold: 1, instrumenter:) @codec = Compression.find_codec(codec_name) @threshold = threshold @instrumenter = instrumenter end |
Instance Method Details
#compress(message_set) ⇒ Protocol::MessageSet
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# File 'lib/kafka/compressor.rb', line 31 def compress() return if @codec.nil? || .size < @threshold compressed_data = compress_data() = Protocol::Message.new( value: compressed_data, codec_id: @codec.codec_id, ) Protocol::MessageSet.new(messages: []) end |