private async Task <IEnumerable <FAQEntry> > GetKnowledgeBaseContents(bool forceDownload)
{
IEnumerable <FAQEntry> faqs = _memoryCache.Get <IEnumerable <FAQEntry> >(Constants.KNOWLEDGE_BASE_CONTENTS_CACHE_KEY);
// Not in cache or force to renew
if (faqs == null || forceDownload)
{
// Retrieve knoledge base contents from reomte server
var contentsModel = await _knowledgeBaseService.DownloadKnowledgeBaseContents(_settings.QnAMaker.SubscriptionKey, _settings.QnAMaker.KnowledgeBaseId, KnowledgeBaseEnum.Environment.Test.GetStringValue());
if (contentsModel == null)
{
return(null);
}
faqs = contentsModel.QnaDocuments.SelectMany(c => c.Questions, (c, ques) => new FAQEntry {
Id = c.Id, Answer = c.Answer, Question = ques, Source = c.Source
});
MemoryCacheEntryOptions options = new MemoryCacheEntryOptions
{
Priority = CacheItemPriority.NeverRemove
};
_memoryCache.Set(Constants.KNOWLEDGE_BASE_CONTENTS_CACHE_KEY, faqs, options);
}
return(faqs);
}
private async Task PreGetknowledgeBaseContetns()
{
IEnumerable <FAQEntry> faqs = _memoryCache.Get <IEnumerable <FAQEntry> >(Constants.KNOWLEDGE_BASE_CONTENTS_CACHE_KEY);
if (faqs == null)
{
// Retrieve knoledge base contents
var contentsModel = await _knowledgeBaseService.DownloadKnowledgeBaseContents(_settings.QnAMaker.SubscriptionKey, _settings.QnAMaker.KnowledgeBaseId, KnowledgeBaseEnum.Environment.Test.GetStringValue());
faqs = contentsModel.QnaDocuments.SelectMany(c => c.Questions, (c, ques) => new FAQEntry {
Id = c.Id, Answer = c.Answer, Question = ques, Source = c.Source
});
MemoryCacheEntryOptions options = new MemoryCacheEntryOptions
{
Priority = CacheItemPriority.NeverRemove
};
_memoryCache.Set(Constants.KNOWLEDGE_BASE_CONTENTS_CACHE_KEY, faqs, options);
Debug.WriteLine($"{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")}->%PreGetknowledgeBaseContetns completed%");
}
}