Class: StreamAccumulator

Inherits:
Object
  • Object
show all
Defined in:
lib/llm_gateway/adapters/stream_accumulator.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ StreamAccumulator

Returns a new instance of StreamAccumulator.



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# File 'lib/llm_gateway/adapters/stream_accumulator.rb', line 6

def initialize
  @message_hash = {}
  @usage_hash = {
    input_tokens: 0,
    cache_creation_input_tokens: 0,
    cache_read_input_tokens: 0,
    output_tokens: 0,
    reasoning_tokens: 0
  }
  @blocks = []
end

Instance Attribute Details

#blocks ⇒ Object

Returns the value of attribute blocks.



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# File 'lib/llm_gateway/adapters/stream_accumulator.rb', line 4

def blocks
  @blocks
end

#message_hash ⇒ Object

Returns the value of attribute message_hash.



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# File 'lib/llm_gateway/adapters/stream_accumulator.rb', line 4

def message_hash
  @message_hash
end

#usage_hash ⇒ Object

Returns the value of attribute usage_hash.



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# File 'lib/llm_gateway/adapters/stream_accumulator.rb', line 4

def usage_hash
  @usage_hash
end

Instance Method Details

#push(event) ⇒ Object 



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# File 'lib/llm_gateway/adapters/stream_accumulator.rb', line 25

def push(event)
  return unless event

  case event.type
  when :text_start
    blocks[event.content_index] = {
      type: "text",
      text: ""
    }
    blocks[event.content_index][:text] += event.delta
  when :text_delta, :text_end
    blocks[event.content_index][:text] += event.delta
  when :tool_start
    blocks[event.content_index] = {
      type: "tool_use",
      id: event.id,
      name: event.name,
      input: ""
    }
  when :tool_delta, :tool_end
    blocks[event.content_index][:input] += event.delta
  when :message_start
    message_hash.merge!(event.delta)
    usage_hash.each_key do |key|
      usage_hash[key] += event.usage_increment.fetch(key, 0)
    end
  when :reasoning_start
    blocks[event.content_index] = {
      type: "reasoning",
      reasoning: "",
      signature: ""
    }
    blocks[event.content_index][:reasoning] += event.delta
    blocks[event.content_index][:signature] += event.respond_to?(:signature) ? event.signature : ""
  when :reasoning_delta
    blocks[event.content_index][:reasoning] += event.delta
    blocks[event.content_index][:signature] += event.signature
  when :reasoning_end
    blocks[event.content_index][:reasoning] += event.delta
    blocks[event.content_index][:signature] += event.respond_to?(:signature) ? event.signature : ""
  when :message_delta
    message_hash.merge!(event.delta)
    usage_hash.each_key do |key|
      usage_hash[key] += event.usage_increment.fetch(key, 0)
    end
  when :message_end
  end
end

#result ⇒ Object 



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# File 'lib/llm_gateway/adapters/stream_accumulator.rb', line 18

def result
  message_hash.merge(
    usage: usage_hash,
    content: serialized_blocks
  )
end