public void EnsureGenerate()
{
var baseUrl = _orchardServices.WorkContext.CurrentSite.BaseUrl;
var part = _orchardServices.WorkContext.CurrentSite.As <WarmupSettingsPart>();
// do nothing while the base url setting is not defined
if (String.IsNullOrWhiteSpace(baseUrl))
{
return;
}
// prevent multiple appdomains from rebuilding the static page concurrently (e.g., command line)
ILockFile lockFile = null;
if (!_lockFileManager.TryAcquireLock(_lockFilename, ref lockFile))
{
return;
}
using (lockFile) {
// check if we need to regenerate the pages by reading the last time it has been done
// 1- if the warmup file doesn't exists, generate the pages
// 2- otherwise, if the scheduled generation option is on, check if the delay is over
if (_appDataFolder.FileExists(_warmupPath))
{
try {
var warmupContent = _appDataFolder.ReadFile(_warmupPath);
var expired = XmlConvert.ToDateTimeOffset(warmupContent).AddMinutes(part.Delay);
if (expired > _clock.UtcNow)
{
return;
}
}
catch {
// invalid file, delete continue processing
_appDataFolder.DeleteFile(_warmupPath);
}
}
// delete peviously generated pages, by reading the Warmup Report file
try {
var encodedPrefix = WarmupUtility.EncodeUrl("http://www.");
foreach (var reportEntry in _reportManager.Read())
{
try {
// use FileName as the SiteBaseUrl could have changed in the meantime
var path = _appDataFolder.Combine(BaseFolder, reportEntry.Filename);
_appDataFolder.DeleteFile(path);
// delete the www-less version too if it's available
if (reportEntry.Filename.StartsWith(encodedPrefix, StringComparison.OrdinalIgnoreCase))
{
var filename = WarmupUtility.EncodeUrl("http://") + reportEntry.Filename.Substring(encodedPrefix.Length);
path = _appDataFolder.Combine(BaseFolder, filename);
_appDataFolder.DeleteFile(path);
}
}
catch (Exception e) {
Logger.Error(e, "Could not delete specific warmup file: ", reportEntry.Filename);
}
}
}
catch (Exception e) {
Logger.Error(e, "Could not read warmup report file");
}
var reportEntries = new List <ReportEntry>();
if (!String.IsNullOrEmpty(part.Urls))
{
// loop over every relative url to generate the contents
using (var urlReader = new StringReader(part.Urls)) {
string relativeUrl;
while (null != (relativeUrl = urlReader.ReadLine()))
{
if (String.IsNullOrWhiteSpace(relativeUrl))
{
continue;
}
string url = null;
relativeUrl = relativeUrl.Trim();
try {
url = VirtualPathUtility.RemoveTrailingSlash(baseUrl) + relativeUrl;
var filename = WarmupUtility.EncodeUrl(url.TrimEnd('/'));
var path = _appDataFolder.Combine(BaseFolder, filename);
var download = _webDownloader.Download(url);
if (download != null)
{
if (download.StatusCode == HttpStatusCode.OK)
{
// success
_appDataFolder.CreateFile(path, download.Content);
reportEntries.Add(new ReportEntry {
RelativeUrl = relativeUrl,
Filename = filename,
StatusCode = (int)download.StatusCode,
CreatedUtc = _clock.UtcNow
});
// if the base url contains http://www, then also render the www-less one);
if (url.StartsWith("http://www.", StringComparison.OrdinalIgnoreCase))
{
url = "http://" + url.Substring("http://www.".Length);
filename = WarmupUtility.EncodeUrl(url.TrimEnd('/'));
path = _appDataFolder.Combine(BaseFolder, filename);
_appDataFolder.CreateFile(path, download.Content);
}
}
else
{
reportEntries.Add(new ReportEntry {
RelativeUrl = relativeUrl,
Filename = filename,
StatusCode = (int)download.StatusCode,
CreatedUtc = _clock.UtcNow
});
}
}
else
{
// download failed
reportEntries.Add(new ReportEntry {
RelativeUrl = relativeUrl,
Filename = filename,
StatusCode = 0,
CreatedUtc = _clock.UtcNow
});
}
}
catch (Exception e) {
Logger.Error(e, "Could not extract warmup page content for: ", url);
}
}
}
}
_reportManager.Create(reportEntries);
// finally write the time the generation has been executed
_appDataFolder.CreateFile(_warmupPath, XmlConvert.ToString(_clock.UtcNow, XmlDateTimeSerializationMode.Utc));
}
}
