private static async Task <string> ProcessDelta(GraphService graphClient, ILogger log, string driveId = null, string deltaLink = null)
{
string deltaRequestUrl = deltaLink;
TeamProvisioning.Initialize(graphClient, log);
var delta = await graphClient.GetListDelta(driveId, deltaRequestUrl);
foreach (var item in delta.CurrentPage)
{
await ProcessDriveItem(graphClient, item);
}
while (delta.NextPageRequest != null)
{
// There are more pages of results
delta = await delta.NextPageRequest.GetAsync();
foreach (var item in delta.CurrentPage)
{
await ProcessDriveItem(graphClient, item);
}
}
// Get the delta link
object newDeltaLink;
delta.AdditionalData.TryGetValue("@odata.deltaLink", out newDeltaLink);
return(newDeltaLink.ToString());
}
private static async Task ProcessDriveItem(GraphService graphClient, Microsoft.Graph.DriveItem item)
{
if (item.File != null)
{
// Query the database
var teams = await DatabaseHelper.GetFlightTeamsAsync(f => f.SharePointListItemId.Equals(item.Id));
var team = teams.FirstOrDefault();
if (item.Deleted != null && team != null)
{
// Remove the team
await TeamProvisioning.ArchiveTeamAsync(team);
// Remove the database item
await DatabaseHelper.DeleteFlightTeamAsync(team.Id);
return;
}
// Get the file's list data
var listItem = await graphClient.GetDriveItemListItem(item.ParentReference.DriveId, item.Id);
if (listItem == null)
{
return;
}
if (team == null)
{
team = FlightTeam.FromListItem(item.Id, listItem);
if (team == null)
{
// Item was added to list but required metadata
// isn't filled in yet. No-op.
return;
}
// New item, provision team
team.TeamId = await TeamProvisioning.ProvisionTeamAsync(team);
await DatabaseHelper.CreateFlightTeamAsync(team);
}
else
{
var updatedTeam = FlightTeam.FromListItem(item.Id, listItem);
updatedTeam.TeamId = team.TeamId;
// Existing item, process changes
await TeamProvisioning.UpdateTeamAsync(team, updatedTeam);
updatedTeam.Id = team.Id;
await DatabaseHelper.UpdateFlightTeamAsync(team.Id, updatedTeam);
}
}
}
private static async Task <string> ProcessDelta(GraphService graphClient, ILogger log, string driveId = null, string deltaLink = null)
{
string deltaRequestUrl = deltaLink;
TeamProvisioning.Initialize(graphClient, log);
Microsoft.Graph.IDriveItemDeltaCollectionPage delta = null;
try
{
delta = await graphClient.GetListDelta(driveId, deltaRequestUrl);
}
catch (Microsoft.Graph.ServiceException ex)
{
if (ex.Error.Code == "resyncRequired")
{
delta = await graphClient.GetListDelta(driveId, null);
}
}
foreach (var item in delta.CurrentPage)
{
await ProcessDriveItem(graphClient, item);
}
while (delta.NextPageRequest != null)
{
// There are more pages of results
delta = await delta.NextPageRequest.GetAsync();
foreach (var item in delta.CurrentPage)
{
await ProcessDriveItem(graphClient, item);
}
}
// Get the delta link
object newDeltaLink;
delta.AdditionalData.TryGetValue("@odata.deltaLink", out newDeltaLink);
return(newDeltaLink.ToString());
}
