public override void GetNews()
{
if (tickers.Count == 0) return;
var newsBody = new StringBuilder(string.Format("[#fmt]#&newstype=yahoo_index#&" +
"publishdate={0:dd.MM.yyyy HH:mm:ss}", DateTime.Now));
int countRead = 0;
foreach (var ticker in tickers)
{
// запросить страницу
var tickValue = ticker.ParseHttpResponce(QueryPage(QueryBase, ticker.NameYahoo));
if (!tickValue.HasValue) continue;
countRead++;
newsBody.AppendFormat("#&{0}={1}", ticker.TickerName, tickValue.ToStringUniform());
}
if (countRead == 0)
{
loggerNoFlood.LogMessageFormatCheckFlood(LogEntryType.Error,
LogMsgNoData, 1000 * 60 * 10, "Нет данных");
return;
}
// отправить новостишку на сервер
var news = new News(channelId, DateTime.Now, newsTitle, newsBody.ToString());
PutNewsOnServer(new [] {news});
loggerNoFlood.LogMessageFormatCheckFlood(LogEntryType.Info,
LogMsgReadOk, 1000 * 60 * 10, "Yahoo: данные успешно прочитаны");
}
protected bool PutNewsOnServer(News[] news)
{
try
{
NewsProxy.PutNews(news);
return true;
}
catch (System.ServiceModel.CommunicationException)
{
// попробовать обновить соединение
try
{
newsProxy = new NewsReceiverProxy("INewsReceiverBinding");
NewsProxy.PutNews(news);
return true;
}
catch (Exception ex)
{
loggerNoFlood.LogMessageFormatCheckFlood(LogEntryType.Error,
LogMsgErrorPutNews, 1000 * 60, "Ошибка доставки новости провайдеру: {0}", ex);
return false;
}
}
catch (Exception ex)
{
loggerNoFlood.LogMessageFormatCheckFlood(LogEntryType.Error,
LogMsgErrorPutNews, 1000 * 60, "Ошибка доставки новости провайдеру: {0}", ex);
return false;
}
}
public News(News news)
{
ChannelId = news.ChannelId;
Time = news.Time;
Title = news.Title;
Body = news.Body;
}
public bool AddNews(News[] news)
{
if (news.Length == 0) return false;
try
{
lockNews.AcquireWriterLock(LockTimeout);
}
catch (ApplicationException)
{
return false;
}
try
{
foreach (var ns in news)
{
if (!dicNews.ContainsKey(ns.ChannelId))
{
var lst = new List<News> {ns};
dicNews.Add(ns.ChannelId, lst);
}
else
dicNews[ns.ChannelId].Add(ns);
}
}
finally
{
lockNews.ReleaseWriterLock();
}
return true;
}
public void TestMerge()
{
// перечитать
NewsLocalStorage.ReInstantiate();
var allNews = MakeSomeNews();
// добавить свежака
var chan1news = allNews[1];
var midNews = chan1news[chan1news.Count/2];
var insertedNews = new News(1, midNews.Time, "Middle news", "Empty body"); // эта будет перезатерта
chan1news.Insert(chan1news.Count/2, insertedNews);
chan1news.Insert(chan1news.Count / 2, new News(insertedNews) { Time = insertedNews.Time.AddSeconds(16) });
chan1news.Add(new News(1, DateTime.Now.AddMinutes(-10), "Latest news", "Empty body"));
chan1news.Add(new News(1, DateTime.Now.AddMinutes(-8), "Latest news - 2", "Empty body"));
NewsLocalStorage.Instance.UpdateNews(chan1news);
// проверить адекватность
var updatedChan1news = NewsLocalStorage.Instance.GetNews(1);
Assert.AreEqual(chan1news.Count - 1, updatedChan1news.Count, "rewritten news: count is ok");
var midNewsNew = updatedChan1news.FirstOrDefault(n => n.Title == "Middle news");
Assert.IsNotNull(midNewsNew, "rewritten news is not null");
}
public static void StoreNews(StreamWriter sw, News[] news)
{
if (news.Length == 0) return;
foreach (var ns in news)
{
sw.Write(ns.ToString());
sw.Write(MessagesSeparator[0]);
}
}
public static void StoreNews(string fileName, News[] news)
{
using (var sw = new StreamWriter(fileName, false, Encoding.UTF8))
{
StoreNews(sw, news);
}
}
/// <summary>
/// формат строки: N:ChannelId;Time;Title;[Body]
/// </summary>
public static News Parse(String str)
{
if (string.IsNullOrEmpty(str)) return null;
if (!str.StartsWith(NewsPrefix)) return null;
str = str.Substring(NewsPrefix.Length);
if (string.IsNullOrEmpty(str)) return null;
var nsParts = str.Split(new[] { PartSeparator }, StringSplitOptions.None);
if (nsParts.Length < 3 || nsParts.Length > 4) return null;
try
{
var news = new News
{
ChannelId = nsParts[0].ToInt(),
Time = nsParts[1].ToDateTimeUniform(),
Title = nsParts[2].Replace(PartSeparatorPlaceHolder, PartSeparator)
};
if (nsParts.Length > 3)
news.Body = nsParts[3].Replace(PartSeparatorPlaceHolder, PartSeparator);
return news;
}
catch (Exception ex)
{
Logger.Error("News.Parse: неправильный формат данных", ex);
return null;
}
}
public bool GetLastNews(out News news)
{
news = null;
try
{
lockNews.AcquireReaderLock(LockTimeout);
}
catch (ApplicationException)
{
return false;
}
try
{
foreach (var lst in dicNews.Values)
{
foreach (var ns in lst)
{
if (news == null)
{
news = ns;
continue;
}
if (ns.Time > news.Time) news = ns;
}
}
return true;
}
finally
{
lockNews.ReleaseReaderLock();
}
}
