Class: AgentC::Pipeline

Inherits:
Object
  • Object
show all
Defined in:
lib/agent_c/pipeline.rb

Defined Under Namespace

Classes: Step

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(session:, task:, git: ->(dir) { Utils::Git.new(dir) }) ⇒ Pipeline

Returns a new instance of Pipeline.



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# File 'lib/agent_c/pipeline.rb', line 10

def initialize(
  session:,
  task:,
  git: ->(dir) { Utils::Git.new(dir) }
)
  @session = session
  @task = task
  @git = git
end

Instance Attribute Details

#session ⇒ Object (readonly)

Returns the value of attribute session.



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# File 'lib/agent_c/pipeline.rb', line 9

def session
  @session
end

#task ⇒ Object (readonly)

Returns the value of attribute task.



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# File 'lib/agent_c/pipeline.rb', line 9

def task
  @task
end

Class Method Details

.agent_step(name, **params, &block) ⇒ Object 



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# File 'lib/agent_c/pipeline.rb', line 39

def agent_step(name, **params, &block)
  step(name) do
    resolved_params = (
      if block
        instance_exec(&block)
      elsif params.empty?
        i18n_attributes = (
          if record.respond_to?(:i18n_attributes)
            record.i18n_attributes
          else
            record.attributes
          end
        )

        {
          tool_args: {
            workspace_dir: workspace.dir,
            env: workspace.env,
          },
          cached_prompt: I18n.t("#{name}.cached_prompts"),
          prompt: I18n.t("#{name}.prompt", **i18n_attributes.symbolize_keys),
          tools: I18n.t("#{name}.tools"),
          schema: -> {
            next unless I18n.exists?("#{name}.response_schema")

            I18n.t("#{name}.response_schema").each do |name, spec|
              extra = spec.except(:required, :description, :type)

              if extra.key?(:of)
                extra[:of] = extra[:of]&.to_sym
              end

              send(
                spec.fetch(:type, "string"),
                name,
                required: spec.fetch(:required, true),
                description: spec.fetch(:description),
                **extra
              )
            end
          }
        }
      else
        i18n_attributes = (
          if record.respond_to?(:i18n_attributes)
            record.i18n_attributes
          else
            record.attributes
          end
        )

        {
          tool_args: {
            workspace_dir: workspace.dir,
            env: workspace.env,
          }
        }.tap { |hash|
          if params.key?(:prompt_key)
            hash[:prompt] = I18n.t(params[:prompt_key],  **i18n_attributes.symbolize_keys)
          end

          if params.key?(:cached_prompt_keys)
            hash[:cached_prompt] = params[:cached_prompt_keys].map { I18n.t(_1) }
          end
        }.merge(params.except(:cached_prompt_keys, :prompt_key))
      end
    )

    result = session.prompt(
      on_chat_created: -> (id) { task.chat_ids << id},
      **resolved_params
    )

    if result.success?
      task.record.update!(result.data)
    else
      task.fail!(result.error_message)
    end
  end
end

.call ⇒ Object 



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# File 'lib/agent_c/pipeline.rb', line 5

def self.call(...)
  new(...).tap(&:call)
end

.on_failure(&block) ⇒ Object 



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# File 'lib/agent_c/pipeline.rb', line 31

def on_failure(&block)
  self.on_failures << block
end

.on_failures ⇒ Object 



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# File 'lib/agent_c/pipeline.rb', line 23

def on_failures
  @on_failures ||= []
end

.step(name, &block) ⇒ Object 



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# File 'lib/agent_c/pipeline.rb', line 35

def step(name, &block)
  self.steps << Step.new(name:, block:)
end

.steps ⇒ Object 



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# File 'lib/agent_c/pipeline.rb', line 27

def steps
  @steps ||= []
end

Instance Method Details

#call ⇒ Object 



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# File 'lib/agent_c/pipeline.rb', line 121

def call
  raise "Task.workspace is nil" unless task.workspace

  log("start")

  while(task.pending?)
    break if task.failed?

    step = self.class.steps.find { !task.completed_steps.include?(_1.name.to_s) }
    break if step.nil?

    @rewind_to = nil

    store.transaction do
      log_prefix = "step: '#{step.name}'"

      log("#{log_prefix} start")

      instance_exec(&step.block)

      if task.failed?
        log("#{log_prefix} failed, executing on_failures")
        self.class.on_failures.each { instance_exec(&_1)}
      elsif @rewind_to
        matching_steps = task.completed_steps.select { _1 == @rewind_to }

        if matching_steps.count == 0
          raise ArgumentError, <<~TXT
            Cannot rewind to a step that's not been completed yet:

            rewind_to!(#{@rewind_to.inspect})
            completed_steps: #{task.completed_steps.inspect}
          TXT
        elsif matching_steps.count > 1
          raise ArgumentError, <<~TXT
            Cannot rewind to a step with a non-distinct name. The step
            name appears multiple times:

            rewind_to!(#{@rewind_to.inspect})
            completed_steps: #{task.completed_steps.inspect}
          TXT
        end

        log("#{log_prefix} rewind_to! #{@rewind_to.inspect}")
        task
          .completed_steps
          .index(@rewind_to)
          .then { task.update!(completed_steps: task.completed_steps[0..._1]) }
      else
        log("#{log_prefix} done")
        task.completed_steps << step.name.to_s
      end
    end
  end

  store.transaction do
    log("done")
    task.done! unless task.failed?
  end
rescue => e
  store.transaction do
    log("Exception raised, running on_failures")
    task.fail!(["#{e.class.name}:#{e.message}", e.backtrace].join("\n"))
    self.class.on_failures.each { instance_exec(&_1) }
  end
end

#log(msg) ⇒ Object 



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# File 'lib/agent_c/pipeline.rb', line 208

def log(msg)
  logger.info("task: #{task.id}: #{msg}")
end

#logger ⇒ Object 



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# File 'lib/agent_c/pipeline.rb', line 212

def logger
  session.logger
end

#record ⇒ Object 



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# File 'lib/agent_c/pipeline.rb', line 192

def record
  task.record
end

#repo ⇒ Object 



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# File 'lib/agent_c/pipeline.rb', line 204

def repo
  @repo ||= @git.call(workspace.dir)
end

#rewind_to!(step) ⇒ Object 



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# File 'lib/agent_c/pipeline.rb', line 200

def rewind_to!(step)
  @rewind_to = step.to_s
end

#store ⇒ Object 



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# File 'lib/agent_c/pipeline.rb', line 196

def store
  task.store
end

#workspace ⇒ Object 



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# File 'lib/agent_c/pipeline.rb', line 188

def workspace
  task.workspace
end