public Page Download(Request request, ITask task)
{
// ReSharper disable once UnusedVariable
string path = BasePath + "/" + task.Identify + "/";
Page page;
try
{
FileInfo file = GetFile(path + Encrypt.Md5Encrypt(request.Url));
StreamReader bufferedReader = new StreamReader(file.OpenRead());
string line = bufferedReader.ReadLine();
if (("url:\t" + request.Url).Equals(line))
{
string html = GetHtml(bufferedReader);
page = new Page(request);
page.SetUrl(PlainText.Create(request.Url));
page.SetHtml(Html.Create(html));
}
}
catch (IOException e)
{
if (e.GetType().IsInstanceOfType(typeof(FileNotFoundException)))
{
_logger.Info("File not exist for url " + request.Url);
}
else
{
_logger.Warn("File read error for url " + request.Url, e);
}
}
page = DownloadWhenMiss(request, task);
return page;
}
public void Before()
{
_resultItems = new ResultItems();
_resultItems.AddOrUpdateResultItem("content", "爬虫工具");
Request request = new Request("http://www.baidu.com", 1, null);
_resultItems.Request = request;
_spider = new DefaultSpider();
}
public Page Download(Request request, ISpider spider)
{
Page page = new Page(request, spider.Site.ContentType);
page.Content = File.ReadAllText(request.Url.LocalPath);
page.TargetUrl = request.Url.ToString();
page.Url = request.Url.ToString();
page.StatusCode = 200;
return page;
}
public object Clone()
{
IDictionary<string, dynamic> extras = new Dictionary<string, dynamic>();
foreach (var entry in Extras)
{
extras.Add(entry.Key, entry.Value);
}
Request newObj = new Request(Url, extras);
return newObj;
}
public void RedisTest()
{
RedisScheduler redisScheduler = new RedisScheduler("localhost", "");
ITask task = new TestTask();
Request request = new Request("http://www.ibm.com/developerworks/cn/java/j-javadev2-22/", null);
request.PutExtra("1", "2");
redisScheduler.Push(request, task);
redisScheduler.Poll(task);
//System.out.println(poll);
}
public static Request GetRequest()
{
var extras = new Dictionary<string, dynamic>();
extras.Add("Test", "Forever");
var request = new Request("http://www.taobao.com", 2, extras)
{
Method = "get",
Priority = 1
};
return request;
}
public static void RunTask()
{
OoSpider ooSpider = OoSpider.Create(new Site
{
SleepTime = 10000
}, new CollectorPageModelToDbPipeline(), typeof(Ganji));
ooSpider.SetThreadNum(1);
Request request = new Request("http://mobds.ganji.com/datashare/", null);
request.Method = "POST";
ooSpider.AddRequest(request);
ooSpider.Run();
}
public bool IsDuplicate(Request request, ITask task)
{
using (var redis = _pool.GetClient())
{
redis.Password = _password;
bool isDuplicate = redis.SetContainsItem(GetSetKey(task), request.Url);
if (!isDuplicate)
{
redis.AddItemToSet(GetSetKey(task), request.Url);
}
return isDuplicate;
}
}
public void RedisTest()
{
RedisScheduler redisScheduler = new RedisScheduler("localhost", "");
ISpider spider = new DefaultSpider();
redisScheduler.Clear();
Request request = new Request("http://www.ibm.com/developerworks/cn/java/j-javadev2-22/", 1, null);
request.PutExtra("1", "2");
redisScheduler.Push(request);
Request result = redisScheduler.Poll();
Assert.AreEqual("http://www.ibm.com/developerworks/cn/java/j-javadev2-22/", result.Url.ToString());
Request result1 = redisScheduler.Poll();
Assert.IsNull(result1);
redisScheduler.Dispose();
redisScheduler.Clear();
}
public void Redis_QueueTest()
{
RedisScheduler redisScheduler = new RedisScheduler("localhost", "");
ISpider spider = new DefaultSpider();
Request request1 = new Request("http://www.ibm.com/1", 1, null);
Request request2 = new Request("http://www.ibm.com/2", 1, null);
Request request3 = new Request("http://www.ibm.com/3", 1, null);
Request request4 = new Request("http://www.ibm.com/4", 1, null);
redisScheduler.Push(request1);
redisScheduler.Push(request2);
redisScheduler.Push(request3);
redisScheduler.Push(request4);
Request result = redisScheduler.Poll();
Assert.AreEqual("http://www.ibm.com/4", result.Url.ToString());
Request result1 = redisScheduler.Poll();
Assert.AreEqual("http://www.ibm.com/3", result1.Url.ToString());
redisScheduler.Dispose();
}
public Page Download(Request request, ISpider spider)
{
// ReSharper disable once UnusedVariable
string path = BasePath + "/" + spider.Identity + "/";
Page page;
try
{
FileInfo file = PrepareFile(path + Encrypt.Md5Encrypt(request.Url.ToString()));
StreamReader bufferedReader = new StreamReader(file.OpenRead());
string line = bufferedReader.ReadLine();
if (("url:\t" + request.Url).Equals(line))
{
string html = GetHtml(bufferedReader);
page = new Page(request, spider.Site.ContentType);
page.Url = request.Url.ToString();
page.Content = html;
}
}
catch (IOException e)
{
#if !NET_CORE
if (e.GetType().IsInstanceOfType(typeof(FileNotFoundException)))
#else
if (typeof(FileNotFoundException).GetTypeInfo().IsAssignableFrom(e.GetType().GetTypeInfo()))
#endif
{
spider.Logger.Info("File not exist for url: " + request.Url);
}
else
{
spider.Logger.Warn("File read error for url " + request.Url, e);
}
}
page = DownloadWhenMiss(request, spider);
return page;
}
public bool IsDuplicate(Request request, ISpider spider)
{
return SafeExecutor.Execute(30, () =>
{
string key = GetSetKey(spider.Identity);
bool isDuplicate = Redis.SetContains(key, request.Identity);
if (!isDuplicate)
{
Redis.SetAdd(key, request.Identity);
}
return isDuplicate;
});
}
public Page Download(Request request, ISpider spider)
{
var page = new Page(request, ContentType.Html);
page.Content = "";
return page;
}
public void Push(Request request)
{
}
//[MethodImpl(MethodImplOptions.Synchronized)]
protected override void PushWhenNoDuplicate(Request request)
{
SafeExecutor.Execute(30, () =>
{
Db.ListRightPush(QueueKey, request.Identity);
string field = request.Identity;
string value = JsonConvert.SerializeObject(request);
Db.HashSet(ItemKey, field, value);
});
}
public Site AddStartRequest(Request startRequest)
{
_startRequests.Add(startRequest);
if (Domain == null && startRequest.Url != null)
{
Domain = UrlUtils.GetDomain(startRequest.Url);
}
return this;
}
//[MethodImpl(MethodImplOptions.Synchronized)]
protected override void PushWhenNoDuplicate(Request request, ISpider spider)
{
SafeExecutor.Execute(30, () =>
{
Redis.ListRightPush(GetQueueKey(spider.Identity), request.Identity);
string field = request.Identity;
string value = JsonConvert.SerializeObject(request);
Redis.HashSet(GetItemKey(spider.Identity), field, value);
});
}
public override Request Poll(ITask task)
{
using (var redis = _pool.GetClient())
{
redis.Password = _password;
string url = redis.PopItemWithLowestScoreFromSortedSet(GetQueueKey(task));
if (url == null)
{
return null;
}
string hashId = ItemPrefix + task.Identify;
string field = Encrypt.Md5Encrypt(url);
string json = null;
//redis �п���ȡ����ʧ��
for (int i = 0; i < 10 && string.IsNullOrEmpty(json = redis.GetValueFromHash(hashId, field)); ++i)
{
Thread.Sleep(150);
}
if (!string.IsNullOrEmpty(json))
{
return JsonConvert.DeserializeObject<Request>(json);
}
Request request = new Request(url, null);
return request;
}
}
public void AddTargetRequest(Request request)
{
_targetRequests.Add(request);
}
public Page(Request request, ContentType contentType)
{
Request = request;
ResultItems.Request = request;
ContentType = contentType;
}
public void OnError(Request request)
{
_errorUrls.Add(request.Url);
_errorCount.Inc();
}
private Page DownloadWhenMiss(Request request, ISpider spider)
{
Page page = null;
if (_downloaderWhenFileMiss != null)
{
page = _downloaderWhenFileMiss.Download(request, spider);
}
return page;
}
/// <summary>
/// Add requests to fetch
/// </summary>
public void AddTargetRequest(Request request)
{
lock (this)
{
TargetRequests.Add(request);
}
}
public bool IsDuplicate(Request request)
{
return SafeExecutor.Execute(30, () =>
{
bool isDuplicate = Db.SetContains(SetKey, request.Identity);
if (!isDuplicate)
{
Db.SetAdd(SetKey, request.Identity);
}
return isDuplicate;
});
}
/// <summary>
/// Add urls to fetch
/// </summary>
/// <param name="requests"></param>
/// <param name="priority"></param>
public void AddTargetRequests(IList<string> requests, int priority)
{
lock (this)
{
foreach (string s in requests)
{
if (string.IsNullOrEmpty(s) || s.Equals("#") || s.StartsWith("javascript:"))
{
continue;
}
string s1 = UrlUtils.CanonicalizeUrl(s, Url);
Request request = new Request(s1, Request.NextDepth, Request.Extras) { Priority = priority };
TargetRequests.Add(request);
}
}
}
private Page DownloadWhenMiss(Request request, ITask task)
{
Page page = null;
if (_downloaderWhenFileMiss != null)
{
page = _downloaderWhenFileMiss.Download(request, task);
}
return page;
}
public Page(Request request)
{
_request = request;
_resultItems.Request = request;
}
public void OnError(Request request)
{
_errorUrls.Add(request.Url.ToString());
_errorCount.Inc();
#if !NET_CORE
if (_spider.SaveStatus && !string.IsNullOrEmpty(MongoConnectString))
{
MongoClient _mongoClient = new MongoClient(MongoConnectString);
var collection = _mongoClient.GetDatabase(_mongoDatabaseName).GetCollection<Request>(_errorRequestCollection);
collection.InsertOne(request);
}
#endif
}
public void AddTargetRequests(IList<string> requests, long priority)
{
foreach (string s in requests)
{
if (string.IsNullOrEmpty(s) || s.Equals("#") || s.StartsWith("javascript:"))
{
continue;
}
string s1 = UrlUtils.CanonicalizeUrl(s, _url.ToString());
Request request = new Request(s1, _request?.Extras) { Priority = priority };
_targetRequests.Add(request);
}
}
public void OnSuccess(Request request)
{
_successCount.Inc();
}
