keolo/playlist-service

Playlist Service

Playlist Service

Reference

• http://crossvader.com
• Demo API Endpoint
• REST API documentation
• Code Quality

Running Locally

• Kubernetes

Process

• Create API endpoint that takes artist_name and event_date params
• Retrieve setlist from setlist.fm
  • Convert event_date to dd-mm-yyyy
  • Memoize/Cache request/response
    • https://api.setlist.fm/rest/0.1/search/setlists.json?artistName=Chromeo&date=18-02-2017
  • Parse response for Event(date, venue_name) and Tracks(name)
    • tracks = JSON.parse(resp.response_body)['setlists']['setlist']['sets']['song'].map{ |key, value| key.first[1] }
• Return {} if setlist has no data or if parsing fails
• Store Event(date, venue_name) in database
• Asynchronously request track and album details for each track
  • Find track by name
    • Memoize/Cache request/response
    • https://api.spotify.com/v1/search?q=night+by+night+chromeo&type=track,artist&limit=1
  • Parse response
  • Store Track(album_id, spotify_identifier, name, isrc, duration)
  • Find album by spotify_identifier
    • Memoize/Cache request/response
    • https://api.spotify.com/v1/albums/7iZU6KMPD0iT7QqtMkTmL1
    • Store Album(spotify_identifier, name, release_date, release_date_precision)
• Return Playlist with Track, Album, and Event data as JSON

Models

• Playlist
  • has_many :tracks, through: :playlist_tracks, -> { order: { position: :desc } }
  • belongs_to :event
  • event_id
  • name
• PlaylistTrack
  • belongs_to :playlist
  • belongs_to :track
  • playlist_id
  • track_id
  • position
• Track
  • has_many :playlists, through: :playlist_tracks
  • belongs_to :artist
  • belongs_to :album
  • artist_id
  • album_id
  • spotify_identifier
  • name
  • isrc
  • duration
• Artist
  • has_many :tracks
  • spotify_identifier
  • name
• Album
  • has_many :tracks
  • spotify_identifier
  • name
  • release_date
  • release_date_precision
• Event
  • has_many :playlists
  • name
  • date

Example Usage

ImportService.import_playlist(artist_name: 'Chromeo', event_date: '2017-02-18')


curl $(minikube service playlist-service --url)/v1/playlists/search?artist_name=Chromeo&event_date=2017-02-18