/// <summary>
/// Flushes the BLOB cache for the specified Web Application.
/// WARNING: This method needs to be run as Farm Admin and have security_admin SQL server role and the db_owner role
/// on the web app's content DB in order to successfully flush the web app's BLOB cache.
/// </summary>
/// <param name="webApplication">The SharePoint web application.</param>
public void FlushBlobCache(SPWebApplication webApplication)
{
try
{
PublishingCache.FlushBlobCache(webApplication);
}
catch (SPException exception)
{
this.logger.Error("Failed to flush the BLOB cache accross the web app. You need You need security_admin SQL server role and the db_owner role on the web app's content DB. Caught and swallowed exception: {0}", exception);
}
catch (AccessViolationException exception)
{
this.logger.Warn("Received an AccessViolationException when flushing BLOB Cache. Trying again with RemoteAdministratorAccessDenied set to true. Caught and swallowed exception: {0}", exception);
bool initialRemoteAdministratorAccessDenied = true;
SPWebService myService = SPWebService.ContentService;
try
{
initialRemoteAdministratorAccessDenied = myService.RemoteAdministratorAccessDenied;
myService.RemoteAdministratorAccessDenied = false;
myService.Update();
PublishingCache.FlushBlobCache(webApplication);
}
finally
{
myService.RemoteAdministratorAccessDenied = initialRemoteAdministratorAccessDenied;
myService.Update();
}
}
}
public void FlushBlobCache(SPWebApplicationInstance webApplication)
{
if (webApplication == null)
{
throw new JavaScriptException(this.Engine, "Error", "An instance of a Web Application object must be specified as the first argument.");
}
PublishingCache.FlushBlobCache(webApplication.SPWebApplication);
}