/// <summary>
/// Get the number of packages in the CKAN group.
/// </summary>
/// <returns></returns>
public static int GetPackageCount()
{
var searchParameters = new PackageSearchParameters();
searchParameters.Groups.Add(SettingsHelper.GetCatalogGroup());
searchParameters.Limit = 0;
int count = CkanHelper.GetClient().SearchPackages <string>(searchParameters, new CacheSettings(SettingsHelper.GetPackageCountCacheDuration(), SettingsHelper.GetPackageCountCacheBackgroundUpdate())).Count;
return(count);
}
/// <summary>
/// Get all packages from the CKAN group.
/// </summary>
/// <returns></returns>
public static List <Package> GetAllPackages()
{
CacheSettings settings = new CacheSettings(SettingsHelper.GetAllPackagesCacheDuration(), SettingsHelper.GetAllPackagesCacheBackgroundUpdate());
// Create the CKAN search parameters
var searchParameters = new PackageSearchParameters();
searchParameters.Groups.Add(SettingsHelper.GetCatalogGroup());
searchParameters.Limit = GetPackageCount();
// Collect the results
PackageSearchResponse <Package> response = CkanHelper.GetClient().SearchPackages <Package>(searchParameters, settings);
return(response.Results);
}
/// <summary>
/// Get search suggestions for all packages in the catalog group. Uses the all packages cache
/// to build a search index that is also cached for performance.
/// </summary>
/// <param name="prefix"></param>
/// <returns></returns>
public static List <string> GetPackageSearchSuggestions(string prefix)
{
CacheSettings settings = new CacheSettings(SettingsHelper.GetAllPackagesCacheDuration(), SettingsHelper.GetAllPackagesCacheBackgroundUpdate());
// Create the CKAN search parameters to get all packages in the group
var searchParameters = new PackageSearchParameters();
searchParameters.Groups.Add(SettingsHelper.GetCatalogGroup());
searchParameters.Limit = GetPackageCount();
// Get a list of search suggestions
List <string> suggestions = CkanHelper.GetClient().GetPackageSearchSuggestions(prefix, searchParameters, settings);
return(suggestions);
}
/// <summary>
/// Provides support for auto-start. See
/// http://weblogs.asp.net/scottgu/archive/2009/09/15/auto-start-asp-net-applications-vs-2010-and-net-4-0-series.aspx
/// </summary>
/// <param name="parameters"></param>
public void Preload(string[] parameters)
{
// Configure log4net
log4net.Config.XmlConfigurator.Configure();
log.Debug("Preloading application.");
// Start caching of auto-cached CKAN requests if we aren't in offline mode
try
{
if (!SettingsHelper.GetOfflineEnabled())
{
log.Debug("Preloading package count cache.");
if (SettingsHelper.GetPackageCountCacheBackgroundUpdate())
{
CkanHelper.GetPackageCount();
}
log.Debug("Preloading all packages cache.");
if (SettingsHelper.GetAllPackagesCacheBackgroundUpdate())
{
CkanHelper.GetAllPackages();
}
log.Debug("Preloading all licenses cache.");
if (SettingsHelper.GetAllLicensesCacheBackgroundUpdate())
{
CkanHelper.GetLicenses();
}
}
else
{
log.Debug("Application is offline. Cache will not be preloaded.");
}
}
catch (Exception ex)
{
// If any errors occur while trying to start caching, log this and clear the error.
// Any new page request will re-attempt to start the caching process
log.Error("Unable to starting background caching on preload", ex);
}
log.Debug("Preloading application complete.");
}
/// <summary>
/// Get all tags from the CKAN group.
/// </summary>
/// <returns></returns>
public static List <Tag> GetAllTags(int limit)
{
CacheSettings settings = new CacheSettings(SettingsHelper.GetAllPackagesCacheDuration(), SettingsHelper.GetAllPackagesCacheBackgroundUpdate());
// Create the CKAN search parameters
var searchParameters = new PackageSearchParameters();
searchParameters.Groups.Add(SettingsHelper.GetCatalogGroup());
// Collect the results
List <Tag> tags = CkanHelper.GetClient().SearchPackagesGetTagCounts(searchParameters, settings);
// Remove filtered tags
tags = TagHelper.FilterTags(tags);
if (limit > 0)
{
tags = TagHelper.LimitTags(tags, limit);
}
return(tags);
}
/// <summary>
/// Get the licenses from the repository. Caches
/// the licenses for 1 hour as these don't update frequently.
/// TODO: Implement common caching proxy for cachable requests.
/// </summary>
/// <returns></returns>
public static List <License> GetLicenses()
{
CacheSettings settings = new CacheSettings(SettingsHelper.GetAllLicensesCacheDuration(), SettingsHelper.GetAllLicensesCacheBackgroundUpdate());
return(CkanHelper.GetClient().GetLicenses(settings));
}
