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# frozen_string_literal: true
require 'mime/types'
module API
# MLFlow integration API, replicating the Rest API https://www.mlflow.org/docs/latest/rest-api.html#rest-api
module Ml
class Mlflow < ::API::Base
include APIGuard
# The first part of the url is the namespace, the second part of the URL is what the MLFlow client calls
MLFLOW_API_PREFIX = ':id/ml/mflow/api/2.0/mlflow/'
allow_access_with_scope :api
allow_access_with_scope :read_api, if: -> (request) { request.get? || request.head? }
before do
authenticate!
not_found! unless Feature.enabled?(:ml_experiment_tracking, user_project)
end
feature_category :mlops
content_type :json, 'application/json'
default_format :json
helpers do
def resource_not_found!
render_structured_api_error!({ error_code: 'RESOURCE_DOES_NOT_EXIST' }, 404)
end
def resource_already_exists!
render_structured_api_error!({ error_code: 'RESOURCE_ALREADY_EXISTS' }, 400)
end
end
params do
requires :id, type: String, desc: 'The ID of a project'
end
resource :projects, requirements: API::NAMESPACE_OR_PROJECT_REQUIREMENTS do
desc 'API to interface with MLFlow Client, REST API version 1.28.0' do
detail 'This feature is gated by :ml_experiment_tracking.'
end
namespace MLFLOW_API_PREFIX do
resource :experiments do
desc 'Fetch experiment by experiment_id' do
success Entities::Ml::Mlflow::Experiment
detail 'https://www.mlflow.org/docs/1.28.0/rest-api.html#get-experiment'
end
params do
optional :experiment_id, type: String, default: '', desc: 'Experiment ID, in reference to the project'
end
get 'get', urgency: :low do
experiment = ::Ml::Experiment.by_project_id_and_iid(user_project.id, params[:experiment_id])
resource_not_found! unless experiment
present experiment, with: Entities::Ml::Mlflow::Experiment
end
desc 'Fetch experiment by experiment_name' do
success Entities::Ml::Mlflow::Experiment
detail 'https://www.mlflow.org/docs/1.28.0/rest-api.html#get-experiment-by-name'
end
params do
optional :experiment_name, type: String, default: '', desc: 'Experiment name'
end
get 'get-by-name', urgency: :low do
experiment = ::Ml::Experiment.by_project_id_and_name(user_project, params[:experiment_name])
resource_not_found! unless experiment
present experiment, with: Entities::Ml::Mlflow::Experiment
end
desc 'Create experiment' do
success Entities::Ml::Mlflow::NewExperiment
detail 'https://www.mlflow.org/docs/1.28.0/rest-api.html#create-experiment'
end
params do
requires :name, type: String, desc: 'Experiment name'
optional :artifact_location, type: String, desc: 'This will be ignored'
optional :tags, type: Array, desc: 'This will be ignored'
end
post 'create', urgency: :low do
resource_already_exists! if ::Ml::Experiment.has_record?(user_project.id, params[:name])
experiment = ::Ml::Experiment.create!(name: params[:name],
user: current_user,
project: user_project)
present experiment, with: Entities::Ml::Mlflow::NewExperiment
end
end
resource :runs do
desc 'Gets an MLFlow Run, which maps to GitLab Candidates' do
success Entities::Ml::Mlflow::Run
detail 'https://www.mlflow.org/docs/1.28.0/rest-api.html#get-run'
end
params do
optional :run_id, type: String, desc: 'UUID of the candidate.'
optional :run_uuid, type: String, desc: 'This parameter is ignored'
end
get 'get', urgency: :low do
candidate = ::Ml::Candidate.with_project_id_and_iid(user_project.id, params[:run_id])
resource_not_found! unless candidate
present candidate, with: Entities::Ml::Mlflow::Run
end
desc 'Creates a Run.' do
success Entities::Ml::Mlflow::Run
detail ['https://www.mlflow.org/docs/1.28.0/rest-api.html#create-run',
'MLFlow Runs map to GitLab Candidates']
end
params do
requires :experiment_id, type: Integer,
desc: 'Id for the experiment, relative to the project'
optional :start_time, type: Integer,
desc: 'Unix timestamp in milliseconds of when the run started.',
default: 0
optional :user_id, type: String, desc: 'This will be ignored'
optional :tags, type: Array, desc: 'This will be ignored'
end
post 'create', urgency: :low do
experiment = ::Ml::Experiment.by_project_id_and_iid(user_project.id, params[:experiment_id].to_i)
resource_not_found! unless experiment
candidate = ::Ml::Candidate.create!(
experiment: experiment,
user: current_user,
start_time: params[:start_time] || 0
)
present candidate, with: Entities::Ml::Mlflow::Run
end
desc 'Updates a Run.' do
success Entities::Ml::Mlflow::UpdateRun
detail ['https://www.mlflow.org/docs/1.28.0/rest-api.html#update-run',
'MLFlow Runs map to GitLab Candidates']
end
params do
optional :run_id, type: String, desc: 'UUID of the candidate.'
optional :status, type: String,
values: ::Ml::Candidate.statuses.keys.map(&:upcase),
desc: "Status of the run. Accepts: " \
"#{::Ml::Candidate.statuses.keys.map(&:upcase)}."
optional :end_time, type: Integer, desc: 'Ending time of the run'
end
post 'update', urgency: :low do
candidate = ::Ml::Candidate.with_project_id_and_iid(user_project.id, params[:run_id])
resource_not_found! unless candidate
candidate.status = params[:status].downcase if params[:status]
candidate.end_time = params[:end_time] if params[:end_time]
candidate.save if candidate.valid?
present candidate, with: Entities::Ml::Mlflow::UpdateRun
end
end
end
end
end
end
end
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