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class SubmissionsController < ApplicationController
before_action :authorize_request, only: [:index, :destroy]
before_action :check_maintenance, only: [:create, :destroy]
before_action :check_wait, only: [:create] # Wait in batch_create is not allowed
before_action :check_batched_submissions, only: [:batch_create, :batch_show]
before_action :check_queue_size, only: [:create, :batch_create]
before_action :check_requested_fields, except: [:batch_create] # Fields are ignored in batch_create
before_action :set_base64_encoded
def index
page = params[:page].try(:to_i) || 1
per_page = params[:per_page].try(:to_i) || Submission.per_page
if page <= 0
render json: { error: "invalid page: #{page}" }, status: :bad_request
return
elsif per_page < 0
render json: { error: "invalid per_page: #{per_page}" }, status: :bad_request
return
end
submissions = Submission.paginate(page: page, per_page: per_page)
serializable_submissions = ActiveModelSerializers::SerializableResource.new(
submissions, { each_serializer: SubmissionSerializer, base64_encoded: @base64_encoded, fields: @requested_fields }
)
render json: {
submissions: serializable_submissions.as_json,
meta: pagination_dict(submissions)
}
rescue Encoding::UndefinedConversionError => e
render json: {
error: "some attributes for one or more submissions cannot be converted to UTF-8, use base64_encoded=true query parameter"
}, status: :bad_request
end
def destroy
if !Config::ENABLE_SUBMISSION_DELETE
render json: { error: "delete not allowed" }, status: :bad_request
return
end
submission = Submission.find_by!(token: params[:token])
if submission.status == Status.queue || submission.status == Status.process
render json: {
error: "submission cannot be deleted because its status is #{submission.status.id} (#{submission.status.name})"
}, status: :bad_request
return
end
submission.delete
# Forcing base64_encoded=true because it guarantees user will get requested data after delete.
render json: submission, base64_encoded: true, fields: @requested_fields
end
def show
token = params[:token]
render json: Rails.cache.fetch("#{token}", expires_in: Config::SUBMISSION_CACHE_DURATION, race_condition_ttl: 0.1*Config::SUBMISSION_CACHE_DURATION) {
Submission.find_by!(token: token)
}, base64_encoded: @base64_encoded, fields: @requested_fields
rescue Encoding::UndefinedConversionError
render_conversion_error(:bad_request)
end
def batch_show
tokens = (request.headers[:tokens] || params[:tokens]).to_s.strip.split(",")
if tokens.length > Config::MAX_SUBMISSION_BATCH_SIZE
render json: {
error: "number of submissions in a batch should be less than or equal to #{Config::MAX_SUBMISSION_BATCH_SIZE}"
}, status: :bad_request
return
elsif tokens.length == 0
render json: {
error: "there should be at least one submission in a batch"
}, status: :bad_request
return
end
existing_submissions = Hash[Submission.where(token: tokens).collect{ |s| [s.token, s] }]
submissions = []
tokens.each do |token|
if existing_submissions.has_key?(token)
serialized_submission = ActiveModelSerializers::SerializableResource.new(
existing_submissions[token], { serializer: SubmissionSerializer, base64_encoded: @base64_encoded, fields: @requested_fields }
)
submissions << serialized_submission.as_json
else
submissions << nil
end
end
render json: { submissions: submissions }
rescue Encoding::UndefinedConversionError => e
render json: {
error: "some attributes for one or more submissions cannot be converted to UTF-8, use base64_encoded=true query parameter"
}, status: :bad_request
end
def create
submission = Submission.new(submission_params(params))
if submission.save
if @wait
begin
IsolateRunner.perform_now(submission)
submission.reload
render json: submission, status: :created, base64_encoded: @base64_encoded, fields: @requested_fields
rescue Encoding::UndefinedConversionError => e
render_conversion_error(:created, submission.token)
end
else
IsolateRunner.perform_later(submission)
render json: submission, status: :created, fields: [:token]
end
else
render json: submission.errors, status: :unprocessable_entity
end
end
# Batch Create does not support sync (wait=true) mode.
def batch_create
number_of_submissions = params[:submissions].try(:size).to_i
if number_of_submissions > Config::MAX_SUBMISSION_BATCH_SIZE
render json: {
error: "number of submissions in a batch should be less than or equal to #{Config::MAX_SUBMISSION_BATCH_SIZE}"
}, status: :bad_request
return
elsif number_of_submissions == 0
render json: {
error: "there should be at least one submission in a batch"
}, status: :bad_request
return
end
submissions = params[:submissions].each.collect{ |p| Submission.new(submission_params(p)) }
response = []
has_valid_submission = false
submissions.each do |submission|
if submission.save
IsolateRunner.perform_later(submission)
response << { token: submission.token }
has_valid_submission = true
else
response << submission.errors
end
end
render json: response, status: has_valid_submission ? :created : :unprocessable_entity
end
private
def submission_params(params)
submission_params = params.permit(
:source_code,
:language_id,
:compiler_options,
:command_line_arguments,
:number_of_runs,
:stdin,
:expected_output,
:cpu_time_limit,
:cpu_extra_time,
:wall_time_limit,
:memory_limit,
:stack_limit,
:max_processes_and_or_threads,
:enable_per_process_and_thread_time_limit,
:enable_per_process_and_thread_memory_limit,
:max_file_size,
:redirect_stderr_to_stdout,
:callback_url,
:additional_files,
:enable_network
)
submission_params[:additional_files] = Base64Service.decode(submission_params[:additional_files])
if @base64_encoded
submission_params[:source_code] = Base64Service.decode(submission_params[:source_code])
submission_params[:stdin] = Base64Service.decode(submission_params[:stdin])
submission_params[:expected_output] = Base64Service.decode(submission_params[:expected_output])
end
submission_params
end
def check_wait
@wait = params[:wait] == "true"
if @wait && !Config::ENABLE_WAIT_RESULT
render json: { error: "wait not allowed" }, status: :bad_request
end
end
def check_batched_submissions
unless Config::ENABLE_BATCHED_SUBMISSIONS
render json: { error: "batched submissions are not allowed" }, status: :bad_request
end
end
def check_queue_size
number_of_submissions = params[:submissions].try(:size).presence || 1
if Resque.size(ENV["JUDGE0_VERSION"]) + number_of_submissions > Config::MAX_QUEUE_SIZE
render json: { error: "queue is full" }, status: :service_unavailable
end
end
def check_requested_fields
fields_service = Fields::Submission.new(params[:fields])
render json: { error: "invalid fields: [#{fields_service.invalid_fields.join(", ")}]" }, status: :bad_request if fields_service.has_invalid_fields?
@requested_fields = fields_service.requested_fields
end
def set_base64_encoded
if Config::DISABLE_IMPLICIT_BASE64_ENCODING
@base64_encoded = params[:base64_encoded] == "true"
else
@base64_encoded = params[:base64_encoded] != "false"
end
end
def render_conversion_error(status, token = nil)
response_json = {
error: "some attributes for this submission cannot be converted to UTF-8, use base64_encoded=true query parameter",
}
response_json[:token] = token if token
render json: response_json, status: status
end
end
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