Class: DebugAgent::ContextCompressor

Inherits:
Object
  • Object
show all
Defined in:
lib/debug_agent/context_compressor.rb

Instance Method Summary collapse

Constructor Details

#initialize(llm, model, temperature, max_context_tokens, recent_rounds_to_keep = 3) ⇒ ContextCompressor

Returns a new instance of ContextCompressor.



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# File 'lib/debug_agent/context_compressor.rb', line 7

def initialize(llm, model, temperature, max_context_tokens, recent_rounds_to_keep = 3)
  @llm = llm
  @model = model
  @temperature = temperature
  @max_context_tokens = max_context_tokens
  @recent_rounds_to_keep = recent_rounds_to_keep
end

Instance Method Details

#compress(session) ⇒ Object 



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# File 'lib/debug_agent/context_compressor.rb', line 20

def compress(session)
  original_tokens = session.current_context_tokens
  return nil unless needs_compression?(original_tokens)

  rounds = identify_rounds(session.messages)

  keep_count = [@recent_rounds_to_keep, rounds.size - 1].min
  return nil if keep_count < 1

  summarize_count = rounds.size - keep_count

  to_summarize = rounds.first(summarize_count).flatten
  to_keep = rounds.drop(summarize_count).flatten

  begin
    summary = summarize_with_llm(to_summarize)
  rescue StandardError => e
    summary = fallback_truncate(to_summarize)
  end

  compressed = [
    { 'role' => 'system', 'content' => "[Previous conversation summary — #{summarize_count} rounds compressed]\n\n#{summary}" }
  ] + to_keep

  compressed_tokens = estimate_tokens(compressed)
  session.replace_messages(compressed)

  CompressionResult.new(
    original_tokens: original_tokens,
    compressed_tokens: compressed_tokens,
    removed_rounds: summarize_count,
    strategy: "LLM summarized #{summarize_count} rounds"
  )
end

#needs_compression?(current_tokens) ⇒ Boolean

Trigger compression when token usage exceeds 75% of context window

Returns:

  • (Boolean) 


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# File 'lib/debug_agent/context_compressor.rb', line 16

def needs_compression?(current_tokens)
  current_tokens > (@max_context_tokens * 0.75).to_i
end