public async Task <TreeNode <NavigationNode> > GetTree()
{
// ultimately we will need to cache sitemap per site
// we will implement a custom ICacheKeyResolver to resolve multi tenant cache keys
if (rootNode == null)
{
log.LogDebug("rootnode was null so checking cache");
string cacheKey = cacheKeyResolver.ResolveCacheKey(options.CacheKey);
rootNode = (TreeNode <NavigationNode>)cache.Get(cacheKey);
if (rootNode == null)
{
log.LogDebug("rootnode was not in cache so building");
rootNode = await implementation.GetTree();
if (rootNode != null)
{
cache.Set(
cacheKey,
rootNode,
new MemoryCacheEntryOptions()
.SetSlidingExpiration(TimeSpan.FromSeconds(options.CacheDurationInSeconds)));
}
}
else
{
log.LogDebug("rootnode was found in cache");
}
}
return(rootNode);
}
public async Task <TreeNode <NavigationNode> > GetTree()
{
// ultimately we will need to cache sitemap per site
// we will implement a custom ICacheKeyResolver to resolve multi tenant cache keys
if (rootNode == null)
{
log.LogDebug("rootnode was null so checking distributed cache");
string cacheKey = cacheKeyResolver.ResolveCacheKey(options.CacheKey);
NavigationTreeXmlConverter converter = new NavigationTreeXmlConverter();
await cache.ConnectAsync();
byte[] bytes = await cache.GetAsync(cacheKey);
if (bytes != null)
{
log.LogDebug("rootnode was found in distributed cache so deserializing");
string xml = Encoding.UTF8.GetString(bytes);
XDocument doc = XDocument.Parse(xml);
rootNode = converter.FromXml(doc);
}
else
{
log.LogDebug("rootnode was not in cache so building");
rootNode = await implementation.GetTree();
string xml2 = converter.ToXmlString(rootNode);
await cache.SetAsync(
cacheKey,
Encoding.UTF8.GetBytes(xml2),
new DistributedCacheEntryOptions().SetSlidingExpiration(
TimeSpan.FromSeconds(options.CacheDurationInSeconds))
);
}
}
return(rootNode);
}
