/// <summary>
/// Loads a collection from the isolated storage folder
/// </summary>
/// <param name="collectionIdentifier"></param>
/// <returns>The collection or null, if the collection isn't found</returns>
public static async Task <IonCollection> loadCollectionFromIsolatedStorageAsync(IonConfig config)
{
try
{
// Generate filePath for collection
string filePath = FilePaths.getCollectionFolderPath(config) + config.collectionIdentifier + IonConstants.JsonFileExtension;
IonCollection collection = null;
using (await fileLocks.ObtainLock(filePath).LockAsync().ConfigureAwait(false))
{
// Open file
StorageFile file = await _localFolder.GetFileAsync(filePath);
// Extract content
string content = await FileIO.ReadTextAsync(file);
// Deserialize collection
collection = JsonConvert.DeserializeObject <IonCollection>(content);
}
fileLocks.ReleaseLock(filePath);
return(collection);
}
catch (Exception e)
{
IonLogging.log("Error loading collection " + config.collectionIdentifier + " from isolated storeage. Message: " + e.Message, IonLogMessageTypes.ERROR);
return(null);
}
}
/// <summary>
/// Gets a collection from the cache
/// </summary>
/// <param name="collectionIdentifier"></param>
/// <returns></returns>
private async Task <IonCollection> getCollectionFromCacheAsync(CollectionCacheIndex cacheIndex, bool serverCallAsBackup)
{
string collectionURL = PagesURLs.getCollectionURL(_config);
// retrieve from memory cache
IonCollection collection = _memoryCache.collection;
if (collection != null)
{
return(collection);
}
// try to load collection from isolated storage
try
{
collection = await StorageUtils.loadCollectionFromIsolatedStorageAsync(_config).ConfigureAwait(false);
// Add collection to memory cache
if (collection != null)
{
_memoryCache.collection = collection;
}
}
catch (Exception e)
{
IonLogging.log("Error getting collection from isolated storage. Message: " + e.Message, IonLogMessageTypes.ERROR);
}
return(collection);
}
/// <summary>
/// Used to get a list of pagePreviews that match the given filter
/// </summary>
/// <param name="filter"></param>
/// <returns>List of pagePreviews</returns>
public async Task <List <IonPagePreview> > getPagePreviewsAsync(Predicate <IonPagePreview> filter)
{
// Filter all pagePreviews in collection with the given filter
IonCollection collection = await getCollectionAsync().ConfigureAwait(false);
List <IonPagePreview> filteredPagePreviews = collection.pages.FindAll(filter);
return(filteredPagePreviews);
}
public void collectionEqualsCheck()
{
string collectionStringOriginal = "{\"collection\":[{\"identifier\":\"lookbook\",\"default_locale\":\"de_DE\",\"last_changed\":\"2016-04-18T16:56:52Z\",\"fts_db\":\"https://lookbook-dev.anfema.com/protected_media/fts/lookbook.sqlite3\",\"archive\":\"https://lookbook-dev.anfema.com/client/v1/de_DE/lookbook.tar?variation=default\",\"pages\":[{\"identifier\":\"barkers-department-store\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-04-18T12:02:19Z\",\"position\":0,\"layout\":\"project\",\"locale\":\"de_DE\",\"parent\":\"commercial\",\"meta\":{\"materials\":\"//lookbook/material-thermatex-dummy\",\"description\":\"<p>BarkersDepartmentStore,<br>England,<br>THERMATEX®Alpha</p>\"}},{\"identifier\":\"harley-davidson-zentrale\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-04-18T11:52:15Z\",\"position\":1,\"layout\":\"project\",\"locale\":\"de_DE\",\"parent\":\"commercial\",\"meta\":{\"description\":\"<p>HarleyDavidsonZentrale,<br>Neu-Isenburg,Deutschland,<br>HERADESIGN®xy</p>\"}},{\"identifier\":\"baudoin-wash-systems-bv\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-04-18T11:52:24Z\",\"position\":2,\"layout\":\"project\",\"locale\":\"de_DE\",\"parent\":\"commercial\",\"meta\":{\"description\":\"<p>BaudoinWashSystemsB.V.,<br>Niederlande,<br>THERMATEX®Alpha</p>\"}},{\"identifier\":\"konsum-leipzig\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-03-30T14:37:04Z\",\"position\":3,\"layout\":\"project\",\"locale\":\"de_DE\",\"parent\":\"commercial\",\"meta\":{\"description\":\"KonsumLeipzig,\\nLeipzig,Deutschland,\\nTHERMATEX®Alphacreme\"}},{\"identifier\":\"erika-cavallini\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-03-31T12:35:45Z\",\"position\":4,\"layout\":\"project\",\"locale\":\"de_DE\",\"parent\":\"commercial\",\"meta\":{\"description\":\"<p>ErikaCavalliniMailand,<br>Italien,<br>HERADESIGN®xy</p>\"}},{\"identifier\":\"essa-primary-school\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-04-18T16:51:37Z\",\"position\":0,\"layout\":\"project\",\"locale\":\"de_DE\",\"parent\":\"education\",\"meta\":{\"description\":\"<p>EssaPrimarySchool,<br>England,<br>THERMATEX®AntarisHERADESIGN®fine</p>\"}},{\"identifier\":\"grundschule-am-arnulfpark\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-04-18T16:56:52Z\",\"position\":1,\"layout\":\"project\",\"locale\":\"de_DE\",\"parent\":\"education\",\"meta\":{\"description\":\"<p>GrundschuleamArnulfpark,<br>Mu¨nchen,Deutschland,<br>HERADESIGN®superfine</p>\"}},{\"identifier\":\"schule-fischerhude\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-03-31T09:23:40Z\",\"position\":2,\"layout\":\"project\",\"locale\":\"de_DE\",\"parent\":\"education\",\"meta\":{\"description\":\"<p>SchuleFischerhude,<br>Deutschland,<br>THERMATEX®Baffel</p>\"}},{\"identifier\":\"kita-doberlug\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-03-31T09:24:18Z\",\"position\":3,\"layout\":\"project\",\"locale\":\"de_DE\",\"parent\":\"education\",\"meta\":{\"description\":\"<p>KitaDoberlug,<br>Deutschland,<br>THERMATEX®VariolineMotiv</p>\"}},{\"identifier\":\"novopecherskaya-schule\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-03-31T09:25:34Z\",\"position\":4,\"layout\":\"project\",\"locale\":\"de_DE\",\"parent\":\"education\",\"meta\":{\"description\":\"<p>NovopecherskayaSchule,<br>Kiew,Ukraine,<br>THERMATEX®Antaris<br>THERMATEX®Sonicelement<br>HERADESIGN®fineHERADESIGN®fine</p>\"}},{\"identifier\":\"universitat-leiden\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-03-31T09:26:29Z\",\"position\":5,\"layout\":\"project\",\"locale\":\"de_DE\",\"parent\":\"education\",\"meta\":{\"description\":\"<p>Universita¨tLeiden,<br>Niederlande,<br>HERADESIGN®fine</p>\"}},{\"identifier\":\"incor-hospital\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-03-31T09:35:01Z\",\"position\":0,\"layout\":\"project\",\"locale\":\"de_DE\",\"parent\":\"infrastructure\",\"meta\":{\"description\":\"<p>IncorHospital,<br>Sa~oPaulo,Brazil,<br>THERMATEX®Thermofon</p>\"}},{\"identifier\":\"multiplex-atmosphera-cinema\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-03-31T09:30:04Z\",\"position\":0,\"layout\":\"project\",\"locale\":\"de_DE\",\"parent\":\"lifestyle\",\"meta\":{\"description\":\"<p>MULTIPLEX-AtmospheraCinema,<br>Kiew,Ukraine,<br>HERADESIGN®fine,<br>THERMATEX®Alpha,THERMATEX®AlphaBlack</p>\"}},{\"identifier\":\"bowling-bahn\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-03-31T09:31:31Z\",\"position\":0,\"layout\":\"project\",\"locale\":\"de_DE\",\"parent\":\"sports-leisure\",\"meta\":{\"description\":\"<p>BowlingBahn,<br>Ukraine,<br>HERADESIGN®superfine<br>HERADESIGN®Deckensegel<br>THERMATEX®Alpha</p>\"}},{\"identifier\":\"mediacom-gmbh\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-03-31T09:32:59Z\",\"position\":0,\"layout\":\"project\",\"locale\":\"de_DE\",\"parent\":\"office\",\"meta\":{\"description\":\"<p>MediacomGmbH,<br>Brilon,Deutschland,<br>THERMATEX®Sonicelement,<br>THERMATEX®LineWandabsorbermitMotiv</p>\"}},{\"identifier\":\"material-thermatex-dummy\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-04-14T06:11:13Z\",\"position\":0,\"layout\":\"material\",\"locale\":\"de_DE\",\"parent\":\"settings\",\"meta\":{\"title\":\"Title\",\"subtitle\":\"Subtitle\"}},{\"identifier\":\"dummy-material-2\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-04-14T15:44:00Z\",\"position\":1,\"layout\":\"material\",\"locale\":\"de_DE\",\"parent\":\"settings\",\"meta\":{\"title\":\"Title\",\"subtitle\":\"Subtitle\"}},{\"identifier\":\"commercial\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-04-14T08:49:26Z\",\"position\":0,\"layout\":\"category\",\"locale\":\"de_DE\",\"parent\":null,\"meta\":{\"title\":\"Commercial\",\"menu-mask\":\"https://lookbook-dev.anfema.com/protected_media/images/58009e0c-953c-401a-825f-7594e9bfa2a4/01_commercial.png\"}},{\"identifier\":\"education\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-03-24T14:30:38Z\",\"position\":1,\"layout\":\"category\",\"locale\":\"de_DE\",\"parent\":null,\"meta\":{\"title\":\"Education\",\"menu-mask\":\"https://lookbook-dev.anfema.com/protected_media/images/b5452444-7122-4a1d-b7a9-24889869939b/01_commercial.png\"}},{\"identifier\":\"infrastructure\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-03-24T14:30:58Z\",\"position\":2,\"layout\":\"category\",\"locale\":\"de_DE\",\"parent\":null,\"meta\":{\"title\":\"Infrastructure\",\"menu-mask\":\"https://lookbook-dev.anfema.com/protected_media/images/fe5efb73-4ef4-4a0c-bbaa-f804ab91b024/01_commercial.png\"}},{\"identifier\":\"lifestyle\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-03-24T14:31:16Z\",\"position\":3,\"layout\":\"category\",\"locale\":\"de_DE\",\"parent\":null,\"meta\":{\"title\":\"Lifestyle\",\"menu-mask\":\"https://lookbook-dev.anfema.com/protected_media/images/8d4ca813-211c-44d7-acf2-feb465b1e952/01_commercial.png\"}},{\"identifier\":\"sports-leisure\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-03-24T14:31:35Z\",\"position\":4,\"layout\":\"category\",\"locale\":\"de_DE\",\"parent\":null,\"meta\":{\"title\":\"Sports&Leisure\",\"menu-mask\":\"https://lookbook-dev.anfema.com/protected_media/images/3f5e9f98-c050-4963-9556-79d7222d4270/01_commercial.png\"}},{\"identifier\":\"office\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-03-24T14:31:53Z\",\"position\":5,\"layout\":\"category\",\"locale\":\"de_DE\",\"parent\":null,\"meta\":{\"title\":\"Office\",\"menu-mask\":\"https://lookbook-dev.anfema.com/protected_media/images/3d0a8578-b9ad-4d3c-86bc-7ca746170de8/01_commercial.png\"}},{\"identifier\":\"about\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-04-14T16:32:43Z\",\"position\":6,\"layout\":\"about\",\"locale\":\"de_DE\",\"parent\":null,\"meta\":{\"title\":\"Legal\"}},{\"identifier\":\"settings\",\"collection_identifier\":\"lookbook\",\"version_number\":1,\"last_changed\":\"2016-04-11T14:55:35Z\",\"position\":7,\"layout\":\"settings\",\"locale\":\"de_DE\",\"parent\":null,\"meta\":{}}]}]}";
IonCollection collection = DataParser.parseCollection(collectionStringOriginal);
string collectionStringResult = JsonConvert.SerializeObject(collection);
IonCollection collection2 = JsonConvert.DeserializeObject <IonCollection>(collectionStringResult);
Assert.AreEqual(collection, collection2);
}
public async Task <String> DownloadSearchDatabaseAsync()
{
String dbTargetFile = FilePaths.GetFtsDbFilePath(_config.collectionIdentifier);
IonCollection ampCollection = await _ampPages.getCollectionAsync().ConfigureAwait(false);
// Load fts db from server and save data to file
using (MemoryStream responseStream = await _dataClient.performRequestAsync(ampCollection.fts_db).ConfigureAwait(false))
{
await FileUtils.WriteToFile(responseStream, dbTargetFile).ConfigureAwait(false);
}
return(dbTargetFile);
}
/// <summary>
/// Used to get a page with a desired identifier
/// </summary>
/// <param name="pageIdentifier"></param>
/// <returns>Already parsed IonPage</returns>
public async Task <IonPage> getPageAsync(string pageIdentifier)
{
string pageURL = PagesURLs.getPageURL(_config, pageIdentifier);
PageCacheIndex pageCacheIndex = await PageCacheIndex.retrieve(pageURL, _config).ConfigureAwait(false);
bool isNetworkConnected = NetworkUtils.isOnline();
if (pageCacheIndex == null)
{
if (isNetworkConnected)
{
IonLogging.log("Loading page \"" + pageIdentifier + "\" from server.", IonLogMessageTypes.SUCCESS);
return(await getPageFromServerAsync(pageIdentifier).ConfigureAwait(false));
}
else
{
IonLogging.log("Error getting page \"" + pageIdentifier + "\" from server or cache.", IonLogMessageTypes.ERROR);
throw new PageNotAvailableException();
}
}
// Get collection
IonCollection collection = await getCollectionAsync().ConfigureAwait(false);
// Get last changed of the page from collection
DateTime pageLastChanged = collection.getPageLastChanged(pageIdentifier);
// Estimate, if the page is outdated or not
bool isOutdated = pageCacheIndex.isOutdated(pageLastChanged);
if (!isOutdated)
{
IonLogging.log("Loading page \"" + pageIdentifier + "\" from cache.", IonLogMessageTypes.SUCCESS);
return(await getPageFromCacheAsync(pageIdentifier).ConfigureAwait(false));
}
else
{
if (isNetworkConnected)
{
// Download page from server
IonLogging.log("Loading newer version of page \"" + pageIdentifier + "\" from server.", IonLogMessageTypes.SUCCESS);
return(await getPageFromServerAsync(pageIdentifier).ConfigureAwait(false));
}
else
{
// get old version from cache
IonLogging.log("Loading potentially old version of page \"" + pageIdentifier + "\" from cache.", IonLogMessageTypes.WARNING);
return(await getPageFromCacheAsync(pageIdentifier).ConfigureAwait(false));
}
}
}
/// <summary>
/// Saves a collection to the isolated storage
/// </summary>
/// <param name="collection"></param>
/// <returns></returns>
public static async Task saveCollectionToIsolatedStorageAsync(IonCollection collection, IonConfig config)
{
// Generate filePath for collection file
string filePath = FilePaths.getCollectionFolderPath(config) + collection.identifier + IonConstants.JsonFileExtension;
using (await fileLocks.ObtainLock(filePath).LockAsync().ConfigureAwait(false))
{
// Create file or use existing file
StorageFile file = await _localFolder.CreateFileAsync(filePath, CreationCollisionOption.ReplaceExisting);
// Serialize collection
string collectionSerialized = JsonConvert.SerializeObject(collection);
// Write serialzed collection to file
await FileIO.WriteTextAsync(file, collectionSerialized);
}
fileLocks.ReleaseLock(filePath);
}
/// <summary>
/// Gets a collection from the server
/// </summary>
/// <param name="collectionIdentifier"></param>
/// <returns></returns>
private async Task <IonCollection> getCollectionFromServerAsync(CollectionCacheIndex cacheIndex, bool cacheAsBackup)
{
//DateTime lastModified = cacheIndex != null ? cacheIndex.lastModified : DateTime.MinValue;
try
{
// Retrive collecion from server and parse it
HttpResponseMessage response = await _dataClient.getCollectionAsync(_config.collectionIdentifier, cacheIndex != null?cacheIndex.lastModified : DateTime.MinValue).ConfigureAwait(false);
// Only parse the answer if it is not newer than the cached version
if (!(response.StatusCode == System.Net.HttpStatusCode.NotModified))
{
// Parse collection
IonCollection collection = await DataParser.parseCollectionAsync(response).ConfigureAwait(false);
// Add collection to memory cache
_memoryCache.collection = collection;
// Save collection to isolated storage
await StorageUtils.saveCollectionToIsolatedStorageAsync(collection, _config).ConfigureAwait(false);
// save cacheIndex
await saveCollectionCacheIndexAsync(collection.last_changed).ConfigureAwait(false);
return(collection);
}
else
{
// Collection in the server is the same as stored already in isolated storage cache
if (_memoryCache.collection == null)
{
// Only load collection from isolated storage cache, if the memory cache has no collection cached
try
{
// Get collection from isolated storage
IonCollection collection = await StorageUtils.loadCollectionFromIsolatedStorageAsync(_config).ConfigureAwait(false);
// Add collection to memory cache
if (collection != null)
{
_memoryCache.collection = collection;
}
// change the last-mofied date in the cacheIndex to now
await saveCollectionCacheIndexAsync(collection.last_changed).ConfigureAwait(false);
return(collection);
}
catch (Exception e)
{
IonLogging.log("Error getting collection from isolated storage. Message: " + e.Message, IonLogMessageTypes.ERROR);
return(null);
}
}
else
{
// change the last-mofied date in the cacheIndex to now
await saveCollectionCacheIndexAsync(_memoryCache.collection.last_changed).ConfigureAwait(false);
return(_memoryCache.collection);
}
}
}
catch (Exception e)
{
IonLogging.log("Error retreiving collection data: " + e.Message, IonLogMessageTypes.ERROR);
return(null);
}
}
/// <summary>
/// Inits the memory cache with a given size
/// </summary>
/// <param name="pageMemoryCacheSize"></param>
public MemoryCache(long pageMemoryCacheSize)
{
_pageMemoryCacheSize = pageMemoryCacheSize;
collection = null;
_pageMemoryCache = new LRUCache <string, IonPage>(pageMemoryCacheSize);
}
