Module: Legion::LLM::API::Namespaces::OpenAI::Files

Extended by:
Legion::Logging::Helper
Defined in:
lib/legion/llm/api/namespaces/openai/files.rb

Constant Summary collapse

FILE_STORE =

rubocop:disable Style/MutableConstant

{}
FILE_MUTEX = 
Mutex.new
CONTENT_TYPE_MAP = 
{
  '.jsonl' => 'application/jsonl',
  '.json'  => 'application/json',
  '.txt'   => 'text/plain',
  '.csv'   => 'text/csv',
  '.pdf'   => 'application/pdf'
}.freeze

Class Method Summary collapse

Class Method Details

.files_dir ⇒ Object 



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# File 'lib/legion/llm/api/namespaces/openai/files.rb', line 27

def self.files_dir
  ::File.join(::Dir.home, '.legionio', 'data', 'files')
end

.registered(app) ⇒ Object

rubocop:disable Metrics/AbcSize,Metrics/MethodLength



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# File 'lib/legion/llm/api/namespaces/openai/files.rb', line 31

def self.registered(app) # rubocop:disable Metrics/AbcSize,Metrics/MethodLength
  log.debug('[llm][api][namespaces][openai][files] registering routes')

  # POST /v1/files  (multipart/form-data)
  app.post '/v1/files' do # rubocop:disable Metrics/BlockLength
    require_llm!

    uploaded = params[:file]
    purpose  = params[:purpose]

    unless uploaded
      halt 400, { 'Content-Type' => 'application/json' },
           Legion::JSON.dump({ error: { message: 'file is required',
                                        type: 'invalid_request_error', code: 'missing_file' } })
    end

    unless purpose
      halt 400, { 'Content-Type' => 'application/json' },
           Legion::JSON.dump({ error: { message: 'purpose is required',
                                        type: 'invalid_request_error', code: 'missing_purpose' } })
    end

    file_id  = "file-#{SecureRandom.hex(16)}"
    filename = begin
      uploaded[:filename] || uploaded.original_filename
    rescue StandardError
      'upload.bin'
    end
    data = begin
      uploaded[:tempfile]&.read || uploaded.read
    rescue StandardError
      ''
    end

    ::FileUtils.mkdir_p(Files.files_dir)
    dest = ::File.join(Files.files_dir, file_id)
    ::File.binwrite(dest, data)

    entry = {
      id:         file_id,
      filename:   filename.to_s,
      purpose:    purpose.to_s,
      bytes:      data.bytesize,
      created_at: Time.now,
      status:     'uploaded'
    }

    FILE_MUTEX.synchronize { FILE_STORE[file_id] = entry }
    log.debug("[llm][api][openai][files] action=upload file_id=#{file_id} filename=#{filename} bytes=#{data.bytesize}")

    content_type :json
    status 200
    Legion::JSON.dump(Files.serialize_file(entry))
  rescue StandardError => e
    handle_exception(e, level: :error, handled: false, operation: 'llm.api.openai.files.upload')
    openai_error(e.message, type: 'server_error', code: 'internal_error', status_code: 500)
  end

  # GET /v1/files (list)
  app.get '/v1/files' do
    require_llm!
    purpose = params[:purpose]
    limit   = params[:limit]&.to_i || 20
    after   = params[:after]

    entries = FILE_MUTEX.synchronize { FILE_STORE.values.dup }
    entries.select! { |f| f[:purpose] == purpose } if purpose
    entries.sort_by! { |f| -f[:created_at].to_i }

    if after
      idx     = entries.index { |f| f[:id] == after }
      entries = entries[(idx + 1)..] if idx
    end

    entries = entries.first(limit)
    log.debug("[llm][api][openai][files] action=list count=#{entries.size}")

    content_type :json
    status 200
    Legion::JSON.dump({
                        object:   'list',
                        data:     entries.map { |f| Files.serialize_file(f) },
                        has_more: false
                      })
  rescue StandardError => e
    handle_exception(e, level: :error, handled: false, operation: 'llm.api.openai.files.list')
    openai_error(e.message, type: 'server_error', code: 'internal_error', status_code: 500)
  end

  # GET /v1/files/:id
  app.get '/v1/files/:id' do
    require_llm!
    file_id = params[:id]
    entry   = FILE_MUTEX.synchronize { FILE_STORE[file_id] }

    unless entry
      halt 404, { 'Content-Type' => 'application/json' },
           Legion::JSON.dump({ error: { message: "File '#{file_id}' not found.",
                                        type: 'invalid_request_error', code: 'file_not_found' } })
    end

    log.debug("[llm][api][openai][files] action=get file_id=#{file_id}")
    content_type :json
    status 200
    Legion::JSON.dump(Files.serialize_file(entry))
  rescue StandardError => e
    handle_exception(e, level: :error, handled: false, operation: 'llm.api.openai.files.get')
    openai_error(e.message, type: 'server_error', code: 'internal_error', status_code: 500)
  end

  # DELETE /v1/files/:id
  app.delete '/v1/files/:id' do
    require_llm!
    file_id = params[:id]
    entry   = FILE_MUTEX.synchronize { FILE_STORE[file_id] }

    unless entry
      halt 404, { 'Content-Type' => 'application/json' },
           Legion::JSON.dump({ error: { message: "File '#{file_id}' not found.",
                                        type: 'invalid_request_error', code: 'file_not_found' } })
    end

    disk_path = ::File.join(Files.files_dir, file_id)
    ::FileUtils.rm_f(disk_path)
    FILE_MUTEX.synchronize { FILE_STORE.delete(file_id) }

    log.debug("[llm][api][openai][files] action=delete file_id=#{file_id}")
    content_type :json
    status 200
    Legion::JSON.dump({ id: file_id, object: 'file', deleted: true })
  rescue StandardError => e
    handle_exception(e, level: :error, handled: false, operation: 'llm.api.openai.files.delete')
    openai_error(e.message, type: 'server_error', code: 'internal_error', status_code: 500)
  end

  # GET /v1/files/:id/content
  app.get '/v1/files/:id/content' do
    require_llm!
    file_id = params[:id]
    entry   = FILE_MUTEX.synchronize { FILE_STORE[file_id] }

    unless entry
      halt 404, { 'Content-Type' => 'application/json' },
           Legion::JSON.dump({ error: { message: "File '#{file_id}' not found.",
                                        type: 'invalid_request_error', code: 'file_not_found' } })
    end

    disk_path = ::File.join(Files.files_dir, file_id)
    unless ::File.exist?(disk_path)
      halt 404, { 'Content-Type' => 'application/json' },
           Legion::JSON.dump({ error: { message: "File content for '#{file_id}' is missing from disk.",
                                        type: 'invalid_request_error', code: 'file_content_missing' } })
    end

    ext          = ::File.extname(entry[:filename].to_s).downcase
    content_mime = CONTENT_TYPE_MAP[ext] || 'application/octet-stream'
    raw          = ::File.binread(disk_path)

    log.debug("[llm][api][openai][files] action=content file_id=#{file_id} bytes=#{raw.bytesize}")
    content_type content_mime
    status 200
    raw
  rescue StandardError => e
    handle_exception(e, level: :error, handled: false, operation: 'llm.api.openai.files.content')
    openai_error(e.message, type: 'server_error', code: 'internal_error', status_code: 500)
  end

  log.debug('[llm][api][namespaces][openai][files] routes registered')
rescue StandardError => e
  handle_exception(e, level: :error, handled: false, operation: 'llm.api.openai.files.register')
end

.serialize_file(entry) ⇒ Object 



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# File 'lib/legion/llm/api/namespaces/openai/files.rb', line 203

def self.serialize_file(entry)
  {
    id:         entry[:id],
    object:     'file',
    bytes:      entry[:bytes],
    created_at: entry[:created_at]&.to_i,
    filename:   entry[:filename],
    purpose:    entry[:purpose],
    status:     entry[:status]
  }
end