Module: Legion::Extensions::Ollama::Runners::S3Models

Extended by:
Helpers::Client
Includes:
Helpers::Lex
Included in:
Client
Defined in:
lib/legion/extensions/ollama/runners/s3_models.rb

Defined Under Namespace

Classes: DigestMismatchError

Constant Summary collapse

OLLAMA_REGISTRY_PREFIX = 
'manifests/registry.ollama.ai/library'

Constants included from Helpers::Client

Helpers::Client::DEFAULT_HOST

Instance Method Summary collapse

Methods included from Helpers::Client

client, streaming_client

Instance Method Details

#import_default_models(default_models:, bucket:) ⇒ Object 



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# File 'lib/legion/extensions/ollama/runners/s3_models.rb', line 140

def import_default_models(default_models:, bucket:, **)
  results = default_models.map do |model|
    import_from_s3(model: model, bucket: bucket, **)
  end

  { result: results, status: 200 }
end

#import_from_s3(model:, bucket:, prefix: 'ollama/models', models_path: nil, **s3_opts) ⇒ Object 



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# File 'lib/legion/extensions/ollama/runners/s3_models.rb', line 38

def import_from_s3(model:, bucket:, prefix: 'ollama/models', models_path: nil, **s3_opts)
  s3 = s3_model_client(**s3_opts)
  path = models_path || default_models_path
  ref = parse_model_ref(model)
  name = ref[:name]
  tag  = ref[:tag]

  manifest_key = "#{prefix}/#{OLLAMA_REGISTRY_PREFIX}/#{name}/#{tag}"
  manifest_resp = s3.get_object(bucket: bucket, key: manifest_key)
  manifest_body = manifest_resp[:body]
  manifest_data = ::JSON.parse(manifest_body)

  digests = []
  digests << manifest_data['config'].slice('digest', 'size')
  digests.concat(manifest_data['layers'].map { |l| l.slice('digest', 'size') })

  blobs_downloaded = 0
  blobs_skipped    = 0

  digests.each do |entry|
    digest = entry['digest']
    expected_hex = extract_hex(digest)
    blob_filename = digest.sub(':', '-')
    local_path    = File.join(path, 'blobs', blob_filename)

    if File.exist?(local_path) && verify_digest(local_path, expected_hex)
      blobs_skipped += 1
      next
    end

    FileUtils.mkdir_p(File.dirname(local_path))
    download_and_verify_blob(s3, bucket: bucket, key: "#{prefix}/blobs/#{blob_filename}",
                                 target: local_path, expected_hex: expected_hex)
    blobs_downloaded += 1
  end

  manifest_path = File.join(path, 'manifests', 'registry.ollama.ai', 'library', name, tag)
  FileUtils.mkdir_p(File.dirname(manifest_path))
  File.binwrite(manifest_path, manifest_body)

  { result: true, model: model, blobs_downloaded: blobs_downloaded, blobs_skipped: blobs_skipped,
    status: 200 }
end

#list_s3_models(bucket:, prefix: 'ollama/models', **s3_opts) ⇒ Object 



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# File 'lib/legion/extensions/ollama/runners/s3_models.rb', line 22

def list_s3_models(bucket:, prefix: 'ollama/models', **s3_opts)
  s3 = s3_model_client(**s3_opts)
  manifest_prefix = "#{prefix}/#{OLLAMA_REGISTRY_PREFIX}/"
  resp = s3.list_objects(bucket: bucket, prefix: manifest_prefix, max_keys: 1000)

  models = resp[:objects].filter_map do |obj|
    relative = obj[:key].delete_prefix(manifest_prefix)
    parts = relative.split('/')
    next unless parts.length == 2

    { name: parts[0], tag: parts[1] }
  end

  { models: models, status: 200 }
end

#sync_from_s3(model:, bucket:, prefix: 'ollama/models', host: nil, models_path: nil, **s3_opts) ⇒ Object 



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# File 'lib/legion/extensions/ollama/runners/s3_models.rb', line 82

def sync_from_s3(model:, bucket:, prefix: 'ollama/models', host: nil, models_path: nil, **s3_opts)
  ollama_opts = host ? { host: host } : {}
  path = models_path || default_models_path
  s3 = s3_model_client(**s3_opts)
  ref = parse_model_ref(model)
  name = ref[:name]
  tag  = ref[:tag]
  model_ref = "#{name}:#{tag}"

  manifest_key = "#{prefix}/#{OLLAMA_REGISTRY_PREFIX}/#{name}/#{tag}"
  manifest_resp = s3.get_object(bucket: bucket, key: manifest_key)
  manifest_data = ::JSON.parse(manifest_resp[:body])

  digests = []
  digests << manifest_data['config']['digest']
  digests.concat(manifest_data['layers'].map { |l| l['digest'] })

  blobs_pushed = 0
  blobs_skipped = 0
  errors = []

  digests.each do |digest|
    if check_blob(digest: digest, **ollama_opts)[:result]
      blobs_skipped += 1
      next
    end

    expected_hex = extract_hex(digest)
    blob_filename = digest.sub(':', '-')
    tempfile = Tempfile.new(['ollama_blob_', blob_filename], binmode: true)
    begin
      stream_s3_to_file(s3, bucket: bucket, key: "#{prefix}/blobs/#{blob_filename}", target: tempfile.path)
      unless verify_digest(tempfile.path, expected_hex)
        errors << { digest: digest, error: 'digest mismatch' }
        next
      end
      result = push_blob(digest: digest, body: File.binread(tempfile.path), **ollama_opts)
      unless result[:result]
        errors << { digest: digest, status: result[:status] }
        next
      end
      blobs_pushed += 1
    ensure
      tempfile.close
      tempfile.unlink
    end
  end

  return { result: false, model: model_ref, errors: errors, status: 500 } if errors.any?

  manifest_path = File.join(path, 'manifests', 'registry.ollama.ai', 'library', name, tag)
  FileUtils.mkdir_p(File.dirname(manifest_path))
  File.binwrite(manifest_path, manifest_resp[:body])

  { result: true, model: model_ref, blobs_pushed: blobs_pushed, blobs_skipped: blobs_skipped,
    status: 200 }
end