127 lines
4.4 KiB
C#
127 lines
4.4 KiB
C#
using System;
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using System.Collections.Concurrent;
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using System.Linq;
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using System.Threading;
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using System.Timers;
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using BirdsiteLive.Twitter.Models;
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namespace BirdsiteLive.Statistics.Domain
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{
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public interface ITwitterStatisticsHandler
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{
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void CalledUserApi();
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void CalledTweetApi();
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void CalledTimelineApi();
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ApiStatistics GetStatistics();
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int GetCurrentUserCalls();
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}
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//Rate limits: https://developer.twitter.com/en/docs/twitter-api/v1/rate-limits
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public class TwitterStatisticsHandler : ITwitterStatisticsHandler
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{
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private static int _userCalls;
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private static int _tweetCalls;
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private static int _timelineCalls;
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private static ConcurrentDictionary<DateTime, ApiStatisticsSnapshot> _snapshots = new ConcurrentDictionary<DateTime, ApiStatisticsSnapshot>();
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private static System.Timers.Timer _resetTimer;
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#region Ctor
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public TwitterStatisticsHandler()
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{
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if (_resetTimer == null)
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{
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_resetTimer = new System.Timers.Timer();
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_resetTimer.Elapsed += OnTimeResetEvent;
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_resetTimer.Interval = 15 * 60 * 1000; // 15"
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_resetTimer.Enabled = true;
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}
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}
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#endregion
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private void OnTimeResetEvent(object sender, ElapsedEventArgs e)
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{
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// Add snapshot
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var snapshot = new ApiStatisticsSnapshot(_userCalls, _tweetCalls, _timelineCalls);
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bool success;
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do
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{
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success = _snapshots.TryAdd(snapshot.SnapshotDate, snapshot);
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} while (!success);
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// Reset
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Interlocked.Exchange(ref _userCalls, 0);
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Interlocked.Exchange(ref _tweetCalls, 0);
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Interlocked.Exchange(ref _timelineCalls, 0);
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// Clean up
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var now = DateTime.UtcNow;
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var oldSnapshots = _snapshots.Keys.Where(x => (now - x).TotalHours > 24).ToList();
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foreach (var old in oldSnapshots) _snapshots.TryRemove(old, out var data);
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}
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public int GetCurrentUserCalls()
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{
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return _userCalls;
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}
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public void CalledUserApi() //GET users/show - 300/15mins
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{
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Interlocked.Increment(ref _userCalls);
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}
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public void CalledTweetApi() //GET statuses/lookup - 300/15mins
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{
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Interlocked.Increment(ref _tweetCalls);
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}
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public void CalledTimelineApi() // GET statuses/user_timeline - 1500/15 mins
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{
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Interlocked.Increment(ref _timelineCalls);
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}
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public ApiStatistics GetStatistics()
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{
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var snapshots = _snapshots.Values.ToList();
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var userCalls = snapshots.Select(x => x.UserCalls).ToList();
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var tweetCalls = snapshots.Select(x => x.TweetCalls).ToList();
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var timelineCalls = snapshots.Select(x => x.TimelineCalls).ToList();
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return new ApiStatistics
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{
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UserCallsCountMin = userCalls.Any() ? userCalls.Min() : 0,
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UserCallsCountAvg = userCalls.Any() ? (int)userCalls.Average() : 0,
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UserCallsCountMax = userCalls.Any() ? userCalls.Max() : 0,
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UserCallsMax = 300,
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TweetCallsCountMin = tweetCalls.Any() ? tweetCalls.Min() : 0,
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TweetCallsCountAvg = tweetCalls.Any() ? (int)tweetCalls.Average() : 0,
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TweetCallsCountMax = tweetCalls.Any() ? tweetCalls.Max() : 0,
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TweetCallsMax = 300,
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TimelineCallsCountMin = timelineCalls.Any() ? timelineCalls.Min() : 0,
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TimelineCallsCountAvg = timelineCalls.Any() ? (int)timelineCalls.Average() : 0,
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TimelineCallsCountMax = timelineCalls.Any() ? timelineCalls.Max() : 0,
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TimelineCallsMax = 1000
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};
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}
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}
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internal class ApiStatisticsSnapshot
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{
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#region Ctor
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public ApiStatisticsSnapshot(int userCalls, int tweetCalls, int timelineCalls)
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{
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UserCalls = userCalls;
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TweetCalls = tweetCalls;
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TimelineCalls = timelineCalls;
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SnapshotDate = DateTime.UtcNow;
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}
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#endregion
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public DateTime SnapshotDate { get; }
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public int UserCalls { get; set; }
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public int TweetCalls { get; set; }
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public int TimelineCalls { get; set; }
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}
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} |