private async Task<BlogSyncResult> UpdateBlog(string blogKey, bool forceShouldUpdate)
{
var stopwatch = Stopwatch.StartNew();
var result = new BlogSyncResult(blogKey);
string lockKey = blogKey.ToLowerInvariant();
try
{
var blogSetting = this.blogSettings.GetBlogSetting(blogKey);
await UpdateBlogLocker.RunWithLock(
lockKey,
async () =>
{
var lastUpdatedAt = !forceShouldUpdate
? await this.Config.DataStorage.GetLastUpdatedAt(blogSetting)
: null;
await this.UpdateBlogData(blogSetting, lastUpdatedAt, result);
});
}
finally
{
if (stopwatch != null)
{
stopwatch.Stop();
result.Elapsed = stopwatch.Elapsed;
}
}
return result;
}
private async Task UpdateBlogData(BlogSetting blogSetting, DateTime? lastUpdatedAt, BlogSyncResult result)
{
var updateMetaTask = this.metaHelper.Update(blogSetting, lastUpdatedAt);
var updatePostsTask = this.postsHelper.Update(blogSetting, lastUpdatedAt);
await Task.WhenAll(updateMetaTask, updatePostsTask);
var meta = updateMetaTask.Result;
var changeSet = updatePostsTask.Result;
result.OnDataUpdated(meta, changeSet);
var saveBlogMetaTask = (meta != null)
? this.Config.DataStorage.SaveBlogMeta(blogSetting, meta)
: Task.CompletedTask;
var saveChangesTask = (changeSet != null)
? this.Config.DataStorage.SaveChanges(blogSetting, changeSet)
: Task.CompletedTask;
await Task.WhenAll(saveBlogMetaTask, saveChangesTask);
}