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|
## SETUP
[ 'rubygems', 'sinatra', 'sinatra/url_for', 'datamapper', 'dm-more', 'builder', 'api_key' ].each do |lib|
require lib
end
# reload
## MODELS
class Dataset
include DataMapper::Resource
property :id, Serial
property :name, String, :unique => true
has n, :associations
end
class Association
include DataMapper::Resource
property :id, Serial
property :compound_uri, URI
property :feature_uri, URI
belongs_to :dataset
end
# automatically create the tables
configure :test do
DataMapper.setup(:default, 'sqlite3::memory:')
[Dataset, Association].each do |model|
model.auto_migrate!
end
end
@db = "datasets.sqlite3"
configure :development, :production do
DataMapper::setup(:default, "sqlite3://#{Dir.pwd}/#{@db}")
unless FileTest.exists?("#{@db}")
[Dataset, Association].each do |model|
model.auto_migrate!
end
end
puts @db
end
## Authentification
helpers do
def protected!
response['WWW-Authenticate'] = %(Basic realm="Testing HTTP Auth") and \
throw(:halt, [401, "Not authorized\n"]) and \
return unless authorized?
end
def authorized?
@auth ||= Rack::Auth::Basic::Request.new(request.env)
@auth.provided? && @auth.basic? && @auth.credentials && @auth.credentials == ['api', API_KEY]
end
end
## REST API
get '/' do
Dataset.all.collect{ |d| url_for("/", :full) + d.id.to_s }.join("\n")
end
get '/:id' do
begin
dataset = Dataset.get(params[:id])
rescue
status 404
"Dataset #{params[:id]} not found."
end
builder do |xml|
xml.instruct!
xml.dataset do
xml.uri url_for("/", :full) + dataset.id.to_s
xml.name dataset.name
dataset.associations.each do |a|
xml.association do
xml.compound_uri a.compound_uri
xml.feature_uri a.feature_uri
end
end
end
end
end
get '/:id/name' do
begin
Dataset.get(params[:id]).name
rescue
status 404
"Dataset #{params[:id]} not found."
end
end
get '/:id/compounds' do
begin
Dataset.get(params[:id]).associations.collect{ |a| a.compound_uri }.uniq.join("\n")
rescue
status 404
"Dataset #{params[:id]} not found."
end
end
get '/:id/features' do
begin
Dataset.get(params[:id]).associations.collect{ |a| a.feature_uri }.uniq.join("\n")
rescue
status 404
"Dataset #{params[:id]} not found."
end
end
get '/:id/features/compounds' do
begin
dataset = Dataset.get(params[:id])
rescue
status 404
"Dataset #{params[:id]} not found."
end
features = {}
dataset.associations.each do |a|
if features[a.feature_uri]
features[a.feature_uri] << a.compound_uri
else
features[a.feature_uri] = [a.compound_uri]
end
end
builder do |xml|
xml.instruct!
xml.dataset do
features.each do |feature,compounds|
xml.feature do
xml.uri feature
compounds.each do |c|
xml.compound_uri c
end
end
end
end
end
end
get '/:id/compounds/features' do
begin
dataset = Dataset.get(params[:id])
rescue
status 404
"Dataset #{params[:id]} not found."
end
compounds = {}
dataset.associations.each do |a|
if compounds[a.compound_uri]
compounds[a.compound_uri] << a.feature_uri
else
compounds[a.compound_uri] = [a.feature_uri]
end
end
builder do |xml|
xml.instruct!
xml.dataset do
compounds.each do |compound,features|
xml.compound do
xml.uri compound
features.each do |f|
xml.feature_uri f
end
end
end
end
end
end
get '/:id/compound/*/features' do
compound_uri = params[:splat].first
Association.all(:dataset_id => params[:id], :compound_uri => compound_uri).collect { |a| a.feature_uri }.uniq.join("\n")
end
get '/:id/feature/*/compounds' do
feature_uri = params[:splat].first
Association.all(:dataset_id => params[:id], :feature_uri => feature_uri).collect { |a| a.compound_uri }.uniq.join("\n")
end
post '/' do
protected!
dataset = Dataset.find_or_create :name => params[:name]
url_for("/", :full) + dataset.id.to_s
end
post '/:id' do
protected!
begin
dataset = Dataset.get params[:id]
rescue
status 404
"Dataset #{params[:id]} not found."
end
compound_uri = params[:compound_uri]
feature_uri = params[:feature_uri]
Association.create(:compound_uri => compound_uri.to_s, :feature_uri => feature_uri.to_s, :dataset_id => dataset.id)
url_for("/", :full) + dataset.id.to_s
end
delete '/:id' do
# dangerous, because other datasets might refer to it
protected!
begin
dataset = Dataset.get params[:id]
rescue
status 404
"Dataset #{params[:id]} not found."
end
dataset.associations.each { |a| a.destroy }
dataset.destroy
"Successfully deleted dataset #{params[:id]}."
end
delete '/:id/associations' do
protected!
begin
dataset = Dataset.get params[:id]
rescue
status 404
"Dataset #{params[:id]} not found."
end
dataset.associations.each { |a| a.destroy }
"Associations for dataset #{params[:id]} successfully deleted."
end
|
