/// <summary>
/// Executes a Search using the searchField as the search parameter,
/// paginates / scrolls the search results to the end adding all the url of apps
/// it finds to a Mongo "QUEUE" collection
/// </summary>
/// <param name="searchField"></param>
private static void CrawlStore(string searchField, bool shouldUseProxies)
{
// Console Feedback
_logger.Warn("Crawling Search Term : [ " + searchField + " ]");
// Hashset of urls used to keep track of what's been parsed already
HashSet <String> foundUrls = new HashSet <String> ();
// Control variable to avoid "Loop" on pagging
bool isDonePagging = false;
// Compiling Regular Expression used to parse the "pagToken" out of the Play Store
Regex pagTokenRegex = new Regex(@"GAEi+.+\:S\:.{11}\\x22", RegexOptions.Compiled);
// HTML Response
string response;
// Response Parser
PlayStoreParser parser = new PlayStoreParser();
// Executing Web Requests
using (WebRequests server = new WebRequests())
{
// Creating Request Object
server.Headers.Add(Consts.ACCEPT_LANGUAGE);
server.Host = Consts.HOST;
server.UserAgent = Consts.GITHUBURL;
server.Encoding = "utf-8";
// Checking for the need to use "HTTP Proxies"
if (shouldUseProxies)
{
server.Proxy = ProxiesLoader.GetWebProxy();
}
// Executing Initial Request
response = server.Post(String.Format(Consts.CRAWL_URL, searchField), Consts.INITIAL_POST_DATA);
// Parsing Links out of Html Page (Initial Request)
foreach (string url in parser.ParseAppUrls(response))
{
// Checks whether the app have been already processed
// or is queued to be processed
foundUrls.Add(url);
if ((!_mongoDB.AppProcessed(Consts.APP_URL_PREFIX + url)) && (!_mongoDB.AppQueued(url)))
{
// Than, queue it :)
_mongoDB.AddToQueue(url);
Thread.Sleep(250); // Hiccup
}
}
// Executing Requests for more Play Store Links
int initialSkip = 48;
int currentMultiplier = 1;
int errorsCount = 0;
do
{
// Finding pagToken from HTML
var rgxMatch = pagTokenRegex.Match(response);
// If there's no match, skips it
if (!rgxMatch.Success)
{
break;
}
// Reading Match from Regex, and applying needed replacements
string pagToken = rgxMatch.Value.Replace(":S:", "%3AS%3A").Replace("\\x22", String.Empty).Replace(@"\\u003d", String.Empty);
// Assembling new PostData with paging values
string postData = String.Format(Consts.POST_DATA, pagToken);
// Executing request for values
response = server.Post(String.Format(Consts.CRAWL_URL, searchField), postData);
// Checking Server Status
if (server.StatusCode != System.Net.HttpStatusCode.OK)
{
_logger.Error("Http Error" + " - Status Code [ " + server.StatusCode + " ]");
errorsCount++;
continue;
}
// Parsing Links
foreach (string url in parser.ParseAppUrls(response))
{
if (foundUrls.Contains(url))
{
isDonePagging = true;
break;
}
// Checks whether the app have been already processed
foundUrls.Add(url);
if ((!_mongoDB.AppProcessed(Consts.APP_URL_PREFIX + url)) && (!_mongoDB.AppQueued(url)))
{
// Than, queue it :)
_mongoDB.AddToQueue(url);
Thread.Sleep(250); // Hiccup
}
}
// Incrementing Paging Multiplier
currentMultiplier++;
} while (!isDonePagging && parser.AnyResultFound(response) && errorsCount <= Consts.MAX_REQUEST_ERRORS);
}
}
/// <summary>
/// Executes a Search using the searchField as the search parameter,
/// paginates / scrolls the search results to the end adding all the url of apps
/// it finds to a AWS SQS queue
/// </summary>
/// <param name="searchField"></param>
private static void CrawlStore(string searchField)
{
// Console Feedback
Console.WriteLine("Crawling Search Term : [ " + searchField + " ]");
// Compiling Regular Expression used to parse the "pagToken" out of the Play Store
Regex pagTokenRegex = new Regex(@"GAEi+.+\:S\:.{11}\\42", RegexOptions.Compiled);
// HTML Response
string response;
// MongoDB Helper
// Configuring MongoDB Wrapper
MongoDBWrapper mongoDB = new MongoDBWrapper();
string fullServerAddress = String.Join(":", Consts.MONGO_SERVER, Consts.MONGO_PORT);
mongoDB.ConfigureDatabase(Consts.MONGO_USER, Consts.MONGO_PASS, Consts.MONGO_AUTH_DB, fullServerAddress, Consts.MONGO_TIMEOUT, Consts.MONGO_DATABASE, Consts.MONGO_COLLECTION);
// Ensuring the database has the proper indexe
mongoDB.EnsureIndex("Url");
// Response Parser
PlayStoreParser parser = new PlayStoreParser();
// Executing Web Requests
using (WebRequests server = new WebRequests())
{
// Creating Request Object
server.Host = Consts.HOST;
// Executing Initial Request
response = server.Post(String.Format(Consts.CRAWL_URL, searchField), Consts.INITIAL_POST_DATA);
// Parsing Links out of Html Page (Initial Request)
foreach (string url in parser.ParseAppUrls(response))
{
// Checks whether the app have been already processed
// or is queued to be processed
if ((!mongoDB.AppProcessed(Consts.APP_URL_PREFIX + url)) && (!mongoDB.AppQueued(url)))
{
// Console Feedback
Console.WriteLine(" . Queued App");
// Than, queue it :)
mongoDB.AddToQueue(url);
Thread.Sleep(250); // Hiccup
}
else
{
// Console Feedback
Console.WriteLine(" . Duplicated App. Skipped");
}
}
// Executing Requests for more Play Store Links
int initialSkip = 48;
int currentMultiplier = 1;
int errorsCount = 0;
do
{
// Finding pagToken from HTML
var rgxMatch = pagTokenRegex.Match(response);
// If there's no match, skips it
if (!rgxMatch.Success)
{
break;
}
// Reading Match from Regex, and applying needed replacements
string pagToken = rgxMatch.Value.Replace(":S:", "%3AS%3A").Replace("\\42", String.Empty).Replace(@"\\u003d", String.Empty);
// Assembling new PostData with paging values
string postData = String.Format(Consts.POST_DATA, pagToken);
// Executing request for values
response = server.Post(String.Format(Consts.CRAWL_URL, searchField), postData);
// Checking Server Status
if (server.StatusCode != System.Net.HttpStatusCode.OK)
{
LogWriter.Error("Http Error", "Status Code [ " + server.StatusCode + " ]");
errorsCount++;
continue;
}
// Parsing Links
foreach (string url in parser.ParseAppUrls(response))
{
// Checks whether the app have been already processed
// or is queued to be processed
if ((!mongoDB.AppProcessed(Consts.APP_URL_PREFIX + url)) && (!mongoDB.AppQueued(url)))
{
// Console Feedback
Console.WriteLine(" . Queued App");
// Than, queue it :)
mongoDB.AddToQueue(url);
Thread.Sleep(250); // Hiccup
}
else
{
// Console Feedback
Console.WriteLine(" . Duplicated App. Skipped");
}
}
// Incrementing Paging Multiplier
currentMultiplier++;
} while (parser.AnyResultFound(response) && errorsCount <= Consts.MAX_REQUEST_ERRORS);
}
}
/// <summary>
/// Executes a Search using the searchField as the search parameter,
/// paginates / scrolls the search results to the end adding all the url of apps
/// it finds to a AWS SQS queue
/// </summary>
/// <param name="searchField"></param>
private static void CrawlStore(string searchField)
{
// Console Feedback
Console.WriteLine("Crawling Search Term : [ " + searchField + " ]");
// HTML Response
string response;
// MongoDB Helper
// Configuring MongoDB Wrapper
MongoDBWrapper mongoDB = new MongoDBWrapper();
string fullServerAddress = String.Join(":", Consts.MONGO_SERVER, Consts.MONGO_PORT);
mongoDB.ConfigureDatabase(Consts.MONGO_USER, Consts.MONGO_PASS, Consts.MONGO_AUTH_DB, fullServerAddress, Consts.MONGO_TIMEOUT, Consts.MONGO_DATABASE, Consts.MONGO_COLLECTION);
// Response Parser
PlayStoreParser parser = new PlayStoreParser();
// Executing Web Requests
using (WebRequests server = new WebRequests())
{
// Creating Request Object
server.Host = Consts.HOST;
// Executing Initial Request
response = server.Post(Consts.CRAWL_URL, Consts.INITIAL_POST_DATA);
// Parsing Links out of Html Page (Initial Request)
foreach (string url in parser.ParseAppUrls(response))
{
// Checks whether the app have been already processed
// or is queued to be processed
if ((!mongoDB.AppProcessed(Consts.APP_URL_PREFIX + url)) && (!mongoDB.AppQueued(url)))
{
// Console Feedback
Console.WriteLine(" . Queued App");
// Than, queue it :)
mongoDB.AddToQueue(url);
}
else
{
// Console Feedback
Console.WriteLine(" . Duplicated App. Skipped");
}
}
// Executing Requests for more Play Store Links
int initialSkip = 48;
int currentMultiplier = 1;
int errorsCount = 0;
do
{
// Assembling new PostData with paging values
string postData = String.Format(Consts.POST_DATA, (initialSkip * currentMultiplier));
// Executing request for values
response = server.Post(Consts.CRAWL_URL, postData);
// Checking Server Status
if (server.StatusCode != System.Net.HttpStatusCode.OK)
{
LogWriter.Error("Http Error", "Status Code [ " + server.StatusCode + " ]");
errorsCount++;
continue;
}
// Parsing Links
foreach (string url in parser.ParseAppUrls(response))
{
// Checks whether the app have been already processed
// or is queued to be processed
if ((!mongoDB.AppProcessed(Consts.APP_URL_PREFIX + url)) && (!mongoDB.AppQueued(url)))
{
// Console Feedback
Console.WriteLine(" . Queued App");
// Than, queue it :)
mongoDB.AddToQueue(url);
}
else
{
// Console Feedback
Console.WriteLine(" . Duplicated App. Skipped");
}
}
// Incrementing Paging Multiplier
currentMultiplier++;
} while (parser.AnyResultFound(response) && errorsCount <= Consts.MAX_REQUEST_ERRORS);
}
}