Twitterjecting
Apropos the Blogjecting Watchdog pattern, In addition to blogging I recently added to our system the ability to twitter. I am using Tweet# from DimeBrain (thanks Mark Nijhof for the tip via twitter). Tweet# makes using tweeter really simple (I included the code below in case you find it useful). The tweeter sender is part of a PostOffice service (I thought that it would be problematic to present it as SpamServer which was its original name :) ) . A few points about our design in general that are interesting in this regards are<span style="color: #606060"> 1:</span> <span style="color: #0000ff">using</span> System;
<span style="color: #606060"> 2:</span> <span style="color: #0000ff">using</span> System.Collections.Generic;
<span style="color: #606060"> 3:</span> <span style="color: #0000ff">using</span> System.Linq;
<span style="color: #606060"> 4:</span> <span style="color: #0000ff">using</span> System.Text;
<span style="color: #606060"> 5:</span> <span style="color: #0000ff">using</span> Dimebrain.TweetSharp.Fluent;
<span style="color: #606060"> 6:</span>
<span style="color: #606060"> 7:</span> <span style="color: #0000ff">namespace</span> xsights.Apps.PostOffice.Server.Twitter
<span style="color: #606060"> 8:</span> {<span style="color: #606060"> 9:</span> <span style="color: #0000ff">class</span> TwitterSender
<span style="color: #606060"> 10:</span> {<span style="color: #606060"> 11:</span> <span style="color: #0000ff">private</span> <span style="color: #0000ff">string</span> account;
<span style="color: #606060"> 12:</span> <span style="color: #0000ff">private</span> <span style="color: #0000ff">string</span> password;
<span style="color: #606060"> 13:</span> <span style="color: #0000ff">private</span> <span style="color: #0000ff">string</span> admin;
<span style="color: #606060"> 14:</span>
<span style="color: #606060"> 15:</span> <span style="color: #0000ff">public</span> TwitterSender(<span style="color: #0000ff">string</span> tweetAccount, <span style="color: #0000ff">string</span> twitterPassword,<span style="color: #0000ff">string</span> adminAccount)
<span style="color: #606060"> 16:</span> {<span style="color: #606060"> 17:</span> account = tweetAccount;
<span style="color: #606060"> 18:</span> password = twitterPassword;
<span style="color: #606060"> 19:</span> admin = adminAccount;
<span style="color: #606060"> 20:</span> }
<span style="color: #606060"> 21:</span> <span style="color: #0000ff">public</span> <span style="color: #0000ff">void</span> Update(<span style="color: #0000ff">string</span> msg)
<span style="color: #606060"> 22:</span> {<span style="color: #606060"> 23:</span> <span style="color: #0000ff">foreach</span> (var tweet <span style="color: #0000ff">in</span> BreakToTwitts(msg))
<span style="color: #606060"> 24:</span> {<span style="color: #606060"> 25:</span> var update =
<span style="color: #606060"> 26:</span> FluentTwitter.CreateRequest().AuthenticateAs(account, password).Statuses().Update(tweet).AsJson();
<span style="color: #606060"> 27:</span>
<span style="color: #606060"> 28:</span> update.Request();
<span style="color: #606060"> 29:</span> }
<span style="color: #606060"> 30:</span> }
<span style="color: #606060"> 31:</span>
<span style="color: #606060"> 32:</span> <span style="color: #0000ff">public</span> <span style="color: #0000ff">void</span> SendAdminMessage(<span style="color: #0000ff">string</span> msg)
<span style="color: #606060"> 33:</span> {<span style="color: #606060"> 34:</span> <span style="color: #0000ff">foreach</span> (var twit <span style="color: #0000ff">in</span> BreakToTwitts(msg))
<span style="color: #606060"> 35:</span> {<span style="color: #606060"> 36:</span> var dm =
<span style="color: #606060"> 37:</span> FluentTwitter.CreateRequest().AuthenticateAs(account, password).DirectMessages().Send(admin, twit).AsJson();
<span style="color: #606060"> 38:</span>
<span style="color: #606060"> 39:</span> Retry(2,dm.Request,<span style="color: #0000ff">false</span>);
<span style="color: #606060"> 40:</span> }
<span style="color: #606060"> 41:</span>
<span style="color: #606060"> 42:</span> }
<span style="color: #606060"> 43:</span>
<span style="color: #606060"> 44:</span> <span style="color: #0000ff">private</span> IList<<span style="color: #0000ff">string</span>> BreakToTwitts(<span style="color: #0000ff">string</span> originalString)
<span style="color: #606060"> 45:</span> {<span style="color: #606060"> 46:</span> var list = <span style="color: #0000ff">new</span> List<<span style="color: #0000ff">string</span>>();
<span style="color: #606060"> 47:</span> <span style="color: #0000ff">for</span> (<span style="color: #0000ff">int</span> i = 0; i < originalString.Length; i += 140)
<span style="color: #606060"> 48:</span> {<span style="color: #606060"> 49:</span> var len = 140;
<span style="color: #606060"> 50:</span> <span style="color: #0000ff">if</span> (originalString.Length - i < 140) len = originalString.Length - i;
<span style="color: #606060"> 51:</span> list.Add(originalString.Substring(i, len));
<span style="color: #606060"> 52:</span> }
<span style="color: #606060"> 53:</span> <span style="color: #0000ff">return</span> list;
<span style="color: #606060"> 54:</span> }
<span style="color: #606060"> 55:</span>
<span style="color: #606060"> 56:</span> <span style="color: #0000ff">private</span> <span style="color: #0000ff">void</span> Retry(<span style="color: #0000ff">int</span> retries, Func<<span style="color: #0000ff">string</span>> call,<span style="color: #0000ff">bool</span> shouldThrow)
<span style="color: #606060"> 57:</span> {<span style="color: #606060"> 58:</span>
<span style="color: #606060"> 59:</span> <span style="color: #0000ff">try</span>
<span style="color: #606060"> 60:</span> {<span style="color: #606060"> 61:</span> call();
<span style="color: #606060"> 62:</span> }
<span style="color: #606060"> 63:</span> <span style="color: #0000ff">catch</span> (Exception ex)
<span style="color: #606060"> 64:</span> {<span style="color: #606060"> 65:</span>
<span style="color: #606060"> 66:</span> <span style="color: #0000ff">if</span> (retries > 0)
<span style="color: #606060"> 67:</span> Retry(--retries, call,shouldThrow);
<span style="color: #606060"> 68:</span> <span style="color: #0000ff">else</span>
<span style="color: #606060"> 69:</span> {<span style="color: #606060"> 70:</span> <span style="color: #0000ff">if</span> (shouldThrow)
<span style="color: #606060"> 71:</span> <span style="color: #0000ff">throw</span>;
<span style="color: #606060"> 72:</span> }
<span style="color: #606060"> 73:</span> }
<span style="color: #606060"> 74:</span> }
<span style="color: #606060"> 75:</span>
<span style="color: #606060"> 76:</span> }
<span style="color: #606060"> 77:</span> }
<span style="color: #606060"> 78:</span>
<span style="color: #606060"> 79:</span> }
