/// <summary>
/// Fetches updated posts
/// </summary>
/// <param name="taskInfo">info related to task, eg accessToken</param>
/// <param name="sourceInfo">contains data source information</param>
public async Task FetchUpdates(ConnectorTask taskInfo, SourceInfoFB sourceInfo, List <ItemMetadata> itemMetadata)
{
if (taskInfo.DirtyEntities != null && taskInfo.DirtyEntities?.Count != 0)
{
Trace.TraceInformation($"Number of dirty posts: {taskInfo.DirtyEntities?.Count}");
string url = QueryFB.GetUpdatedPostsUrl(taskInfo);
AuthenticationHeaderValue header = new AuthenticationHeaderValue("Bearer", sourceInfo.AccessToken);
Dictionary <string, PostFB> dict = await this.downloader.GetWebContent <Dictionary <string, PostFB>, ErrorsFB>(url, header);
foreach (KeyValuePair <string, PostFB> postEntry in dict)
{
await HandlePost(postEntry.Value, header, sourceInfo.PageId, sourceInfo.PageName, taskInfo, itemMetadata);
}
}
}
/// <summary>
/// Fetches Posts wrt given time interval
/// </summary>
/// <param name="taskInfo">contains the time stamps for which data is to be fetched</param>
/// <param name="sourceInfo">contains data source information</param>
public async Task FetchPosts(ConnectorTask taskInfo, SourceInfoFB sourceInfo, List <ItemMetadata> itemMetadata)
{
string url = QueryFB.GetFeedUrl(taskInfo, sourceInfo);
Trace.TraceInformation($"Fetching Data from Facebook, TenantId: {taskInfo.TenantId}, JobId: {taskInfo.JobId}, StartTime: {taskInfo.StartTime.ToString()}, EndTime: {taskInfo.EndTime.ToString()}");
AuthenticationHeaderValue header = new AuthenticationHeaderValue("Bearer", sourceInfo.AccessToken);
do
{
PostListFB list = await this.downloader.GetWebContent <PostListFB, ErrorsFB>(url, header);
PostFB[] postList = list.Data;
PagingFB pagingPointers = list.Paging;
if (postList.Count() == 0)
{
break;
}
foreach (PostFB post in postList)
{
await HandlePost(post, header, sourceInfo.PageId, sourceInfo.PageName, taskInfo, itemMetadata);
}
url = pagingPointers?.Next;
} while (url != null);
}