/// <inheritdoc />
public void ReleaseBrowser(BrowserAbstract browser)
{
// This method is not expected to leak any predictable WebDriver exceptions.
if (browser == null)
{
return;
}
FiddlerProxy.ClearHeaders(browser.ProcessId);
try
{
// cleanup the previous state
browser.DeleteAllCookies();
// Selenium issue: must navigate away from page after cleaning up cookies otherwise some cookies will persist.
browser.NavigateTo(browser.DefaultPage);
}
// ReSharper disable once EmptyGeneralCatchClause
catch
{
// suppress any exceptions while removing cookies.
// If there is a problem, the browser will be marked as Faulted and handled in the next block.
}
if (this.browserPools.ContainsKey(browser.BrowserType) &&
!this.browserPools[browser.BrowserType].PoolContains(browser))
{
// put the browser back in rotation
this.browserPools[browser.BrowserType].ReleaseBrowser(browser);
}
}
/// <summary>
/// Removes a browser instance from the pool.
/// </summary>
/// <param name="browser">
/// The browser to remove.
/// </param>
public void RemoveInstance(BrowserAbstract browser)
{
if (browser != null)
{
this.instances.Remove(browser);
this.timers.Remove(browser);
}
}
/// <summary>
/// Returns a previously acquired browser to the pool.
/// </summary>
/// <param name="browser">
/// The browser to release.
/// </param>
public void ReleaseBrowser(BrowserAbstract browser)
{
if (this.instances.Contains(browser))
{
this.pool.Add(browser);
this.timers[browser].Stop();
this.timers[browser].Reset();
}
}
/// <summary>
/// Adds a browser instance to the pool.
/// </summary>
/// <param name="browser">
/// The browser to add.
/// </param>
public void AddInstance(BrowserAbstract browser)
{
if (browser.BrowserType == this.BrowserType)
{
if (!this.timers.ContainsKey(browser))
{
this.timers.Add(new KeyValuePair <BrowserAbstract, Stopwatch>(browser, new Stopwatch()));
}
this.instances.Add(browser);
this.pool.Add(browser);
}
}
/// <inheritdoc />
public BrowserAbstract AcquireBrowser(BrowserType browserType)
{
BrowserAbstract browser = null;
if (this.browserPools.ContainsKey(browserType))
{
var pool = this.browserPools[browserType];
browser = pool.WaitForABrowser();
if (browser == null)
{
Logger.WriteDebug(
"Unable to acquire browser {0}", browserType);
}
}
return(browser);
}
/// <inheritdoc />
public void CreateBrowserInstances()
{
// wait a short while for the semaphore, if we can't get it then assume someone else is maintaining the pool
if (this.syncLock.Wait(100))
{
try
{
foreach (var pool in this.browserPools.Values)
{
for (int i = pool.InstanceCount; i < pool.MaxInstances; i++)
{
try
{
BrowserAbstract browser = this.factory.Create(pool.BrowserType);
Logger.WriteInfo(
"Registering browser: {0} (PID {1} parent PID {2})",
browser.GetType().Name,
browser.ProcessId,
browser.ParentProcessId);
pool.AddInstance(browser);
}
catch (Exception exception)
{
Logger.WriteWarning(
exception,
"Unexpected failure while creating a browser of type {0}",
pool.BrowserType);
}
}
}
}
finally
{
this.syncLock.Release();
}
}
}
/// <summary>
/// Returns a value indicating whether the specified browser is available in the pool.
/// </summary>
/// <param name="browser">
/// The browser to verify.
/// </param>
/// <returns>
/// True if the browser is available in the pool, otherwise false.
/// </returns>
public bool PoolContains(BrowserAbstract browser)
{
return(this.pool.Contains(browser));
}
