""" BAPSicle Server Next-gen audio playout server for University Radio York playout, based on WebStudio interface. MyRadio API Handler In an ideal world, this module gives out and is fed PlanItems. This means it can be swapped for a different backend in the (unlikely) event someone else wants to integrate BAPsicle with something else. Authors: Matthew Stratford Michael Grace Date: November 2020 """ from typing import Optional import aiohttp import json from logging import INFO, ERROR, WARNING, DEBUG import os import requests import time from baps_types.plan import PlanItem from helpers.os_environment import resolve_external_file_path from helpers.logging_manager import LoggingManager from helpers.state_manager import StateManager class MyRadioAPI: logger: LoggingManager config: StateManager def __init__(self, logger: LoggingManager, config: StateManager): self.logger = logger self.config = config async def async_call(self, url, method="GET", data=None, timeout=10): async with aiohttp.ClientSession(read_timeout=timeout) as session: if method == "GET": func = session.get(url) status_code = 200 elif method == "POST": func = session.post(url, data=data) status_code = 201 elif method == "PUT": func = session.put(url) status_code = 201 else: return async with func as response: if response.status != status_code: self._logException( "Failed to get API request. Status code: " + str(response.status) ) self._logException(str(await response.text())) return await response.read() def call(self, url, method="GET", data=None, timeout=10, json_payload=True): if method == "GET": r = requests.get(url, timeout=timeout) status_code = 200 elif method == "POST": r = requests.post(url, data, timeout=timeout) status_code = 201 elif method == "PUT": r = requests.put(url, data, timeout=timeout) status_code = 200 else: return if r.status_code != status_code: self._logException( "Failed to get API request. Status code: " + str(r.status_code) ) self._logException(str(r.text)) return json.loads(r.text) if json_payload else r.text async def async_api_call(self, url, api_version="v2", method="GET", data=None, timeout=10): if api_version == "v2": url = "{}/v2{}".format(self.config.get()["myradio_api_url"], url) elif api_version == "non": url = "{}{}".format(self.config.get()["myradio_base_url"], url) else: self._logException("Invalid API version. Request not sent.") return None if "?" in url: url += "&api_key={}".format(self.config.get()["myradio_api_key"]) else: url += "?api_key={}".format(self.config.get()["myradio_api_key"]) self._log("Requesting API V2 URL with method {}: {}".format(method, url)) request = None if method == "GET": request = self.async_call(url, method="GET", timeout=timeout) elif method == "POST": self._log("POST data: {}".format(data)) request = self.async_call(url, data=data, method="POST", timeout=timeout) elif method == "PUT": request = self.async_call(url, method="PUT", timeout=timeout) else: self._logException("Invalid API method. Request not sent.") return None self._log("Finished request.") return request def api_call(self, url, api_version="v2", method="GET", data=None, timeout=10): if api_version == "v2": url = "{}/v2{}".format(self.config.get()["myradio_api_url"], url) elif api_version == "non": url = "{}{}".format(self.config.get()["myradio_base_url"], url) else: self._logException("Invalid API version. Request not sent.") return None if "?" in url: url += "&api_key={}".format(self.config.get()["myradio_api_key"]) else: url += "?api_key={}".format(self.config.get()["myradio_api_key"]) self._log("Requesting API V2 URL with method {}: {}".format(method, url)) request = None if method == "GET": request = self.call(url, method="GET", timeout=timeout) elif method == "POST": self._log("POST data: {}".format(data)) request = self.call(url, data=data, method="POST", timeout=timeout) elif method == "PUT": request = self.call(url, method="PUT", timeout=timeout) else: self._logException("Invalid API method. Request not sent.") return None self._log("Finished request.") return request # Show plans async def get_showplans(self): url = "/timeslot/currentandnextobjects?n=10" request = await self.async_api_call(url) if not request: self._logException("Failed to get list of show plans.") return None payload = json.loads(await request)["payload"] shows = [] if not payload["current"]: self._logException("API did not return a current show.") else: shows.append(payload["current"]) if not payload["next"]: self._logException("API did not return a list of next shows.") else: shows.extend(payload["next"]) # Remove jukebox etc for show in shows: if not "timeslot_id" in show: shows.remove(show) return shows async def get_showplan(self, timeslotid: int): url = "/timeslot/{}/showplan".format(timeslotid) request = await self.async_api_call(url) if not request: self._logException("Failed to get show plan.") return None payload = json.loads(await request)["payload"] plan = {} # Account for MyRadio api being dumb depending on if it's cached or not. if isinstance(payload, list): for channel in range(len(payload)): plan[str(channel)] = payload[channel] return plan elif isinstance(payload, dict): return payload self.logger.log.error("Show plan in unknown format.") return None # Audio Library async def get_filename(self, item: PlanItem, did_download: bool = False): format = "mp3" # TODO: Maybe we want this customisable? if item.trackid: itemType = "track" id = item.trackid url = "/NIPSWeb/secure_play?trackid={}&{}".format(id, format) elif item.managedid: itemType = "managed" id = item.managedid url = "/NIPSWeb/managed_play?managedid={}".format(id) else: return (None, False) if did_download else None # Now check if the file already exists path: str = resolve_external_file_path("/music-tmp/") dl_suffix = ".downloading" if not os.path.isdir(path): self._log("Music-tmp folder is missing, attempting to create.") try: os.mkdir(path) except Exception as e: self._logException("Failed to create music-tmp folder: {}".format(e)) return (None, False) if did_download else None filename: str = resolve_external_file_path( "/music-tmp/{}-{}.{}".format(itemType, id, format) ) # Check if we already downloaded the file. If we did, give that. if os.path.isfile(filename): self._log("Already got file: " + filename, DEBUG) return (filename, False) if did_download else filename # If something else (another channel, the preloader etc) is downloading the track, wait for it. if os.path.isfile(filename + dl_suffix): time_waiting_s = 0 self._log("Waiting for download to complete from another worker. " + filename, DEBUG) while time_waiting_s < 20: # TODO: Make something better here. # If the connectivity is super poor or we're loading reeaaaalllly long files, this may be annoying, but this is just in case somehow the other api download gives up. if os.path.isfile(filename): # Now the file is downloaded successfully return (filename, False) if did_download else filename time_waiting_s +=1 self._log("Still waiting",DEBUG) time.sleep(1) # File doesn't exist, download it. try: # Just create the file to stop other sources from trying to download too. open(filename + dl_suffix, "a").close() except Exception: self.logger.log.exception("Couldn't create new temp file.") return (None, False) if did_download else None request = await self.async_api_call(url, api_version="non") if not request: return (None, False) if did_download else None try: with open(filename + dl_suffix, "wb") as file: file.write(await request) os.rename(filename + dl_suffix, filename) except Exception as e: self._logException("Failed to write music file: {}".format(e)) return (None, False) if did_download else None return (filename, True) if did_download else filename # Gets the list of managed music playlists. async def get_playlist_music(self): url = "/playlist/allitonesplaylists" request = await self.async_api_call(url) if not request: self._logException("Failed to retrieve music playlists.") return None return json.loads(await request)["payload"] # Gets the list of managed aux playlists (sfx, beds etc.) async def get_playlist_aux(self): url = "/nipswebPlaylist/allmanagedplaylists" request = await self.async_api_call(url) if not request: self._logException("Failed to retrieve music playlists.") return None return json.loads(await request)["payload"] # Loads the playlist items for a certain managed aux playlist async def get_playlist_aux_items(self, library_id: str): # Sometimes they have "aux-", we only need the index. if library_id.index("-") > -1: library_id = library_id[library_id.index("-") + 1:] url = "/nipswebPlaylist/{}/items".format(library_id) request = await self.async_api_call(url) if not request: self._logException( "Failed to retrieve items for aux playlist {}.".format(library_id) ) return None return json.loads(await request)["payload"] # Loads the playlist items for a certain managed playlist async def get_playlist_music_items(self, library_id: str): url = "/playlist/{}/tracks".format(library_id) request = await self.async_api_call(url) if not request: self._logException( "Failed to retrieve items for music playlist {}.".format(library_id) ) return None return json.loads(await request)["payload"] async def get_track_search( self, title: Optional[str], artist: Optional[str], limit: int = 100 ): url = "/track/search?title={}&artist={}&digitised=1&limit={}".format( title if title else "", artist if artist else "", limit ) request = await self.async_api_call(url) if not request: self._logException("Failed to search for track.") return None return json.loads(await request)["payload"] def post_tracklist_start(self, item: PlanItem): if item.type != "central": self._log("Not tracklisting, {} is not a track.".format(item.name)) return False self._log("Tracklisting item: '{}'".format(item.name)) source: str = self.config.get()["myradio_api_tracklist_source"] data = { "trackid": item.trackid, "sourceid": int(source) if source.isnumeric() else source } # Starttime and timeslotid are default in the API to current time/show. tracklist_id = None try: tracklist_id = self.api_call("/tracklistItem/", method="POST", data=data)["payload"]["audiologid"] except Exception as e: self._logException("Failed to get tracklistid. {}".format(e)) if not tracklist_id or not isinstance(tracklist_id, int): self._log("Failed to tracklist! API rejected tracklist.", ERROR) return return tracklist_id def post_tracklist_end(self, tracklistitemid: int): if not tracklistitemid: self._log("Tracklistitemid is None, can't end tracklist.", WARNING) return False if not isinstance(tracklistitemid, int): self._logException("Tracklistitemid '{}' is not an integer!".format(tracklistitemid)) return False self._log("Ending tracklistitemid {}".format(tracklistitemid)) self.api_call("/tracklistItem/{}/endtime".format(tracklistitemid), method="PUT") def _log(self, text: str, level: int = INFO): self.logger.log.log(level, "MyRadio API: " + text) def _logException(self, text: str): self.logger.log.exception("MyRadio API: " + text)