public static async Task <string> GetUsersWithDelta(GraphServiceClient client, string deltaLink, ITargetBlock <User> target, CancellationToken token)
{
IUserDeltaCollectionPage page = new UserDeltaCollectionPage();
page.InitializeNextPageRequest(client, deltaLink);
return(await GraphHelperUsers.GetUsersWithDelta(page, target, token));
}
public static IEnumerable <User> UsersDeltaQueryEfficient(RequestManager requestManager)
{
// Step 1: make a request to get the latest delta token, without returning any results. The goal is to obtain the current token, and later download the current resource state - efficiently
string latestDeltaTokenUrl = $"{requestManager.GraphClient.BaseUrl}/users/delta?$deltaToken=latest";
var page = new UserDeltaCollectionPage();
page.InitializeNextPageRequest(requestManager.GraphClient, latestDeltaTokenUrl);
var emptyPage = page.NextPageRequest.GetAsync().Result;
var firstDeltaRequest = GetNextDeltaRequest(emptyPage, requestManager.GraphClient);
// Step 2: download the current state of the User collection, efficiently
var currentStateDict = UserScenarios.GetAllUsers(requestManager).ToDictionary(u => u.Id);
// Step 3: pick up delta changes since before we downloaded the current state
var changesSinceCurrentState = ExecuteDeltaCycle(firstDeltaRequest);
// Step 4: merge changes into current state
foreach (var change in changesSinceCurrentState)
{
currentStateDict[change.Id] = change;
}
// Step 5: we now have current state, get the delta link for future changes
var deltaRequest = GetNextDeltaRequest(changesSinceCurrentState, requestManager.GraphClient);
return(WaitForDeltaChanges(deltaRequest));
}
private static IUserDeltaCollectionPage ExecuteDeltaCycle(IUserDeltaRequest request)
{
IUserDeltaCollectionPage currentUserState = new UserDeltaCollectionPage();
IUserDeltaCollectionPage currentPage;
do
{
currentPage = request.GetAsync().Result;
foreach (var user in currentPage)
{
currentUserState.Add(user);
}
request = currentPage.NextPageRequest;
} while (request != null);
currentUserState.AdditionalData = currentPage.AdditionalData;
return(currentUserState);
}
/// <inheritdoc/>
public async Task <(IEnumerable <User>, string)> GetAllUsersAsync(string deltaLink = null)
{
var users = new List <User>();
IUserDeltaCollectionPage collectionPage;
if (string.IsNullOrEmpty(deltaLink))
{
collectionPage = await this.graphServiceClient
.Users
.Delta()
.Request()
.Select("id, displayName, userPrincipalName, userType")
.Top(GraphConstants.MaxPageSize)
.WithMaxRetry(GraphConstants.MaxRetry)
.GetAsync();
}
else
{
collectionPage = new UserDeltaCollectionPage();
collectionPage.InitializeNextPageRequest(this.graphServiceClient, deltaLink);
collectionPage = await collectionPage
.NextPageRequest
.WithMaxRetry(GraphConstants.MaxRetry)
.GetAsync();
}
users.AddRange(collectionPage);
while (collectionPage.NextPageRequest != null)
{
collectionPage = await collectionPage
.NextPageRequest
.WithMaxRetry(GraphConstants.MaxRetry)
.GetAsync();
users.AddRange(collectionPage);
}
collectionPage.AdditionalData.TryGetValue("@odata.deltaLink", out object delta);
return(users, delta as string);
}
public static async Task <List <string> > GetUsersAsync(GraphServiceClient graphClient, HttpContext httpContext)
{
IUserDeltaCollectionPage userPage = new UserDeltaCollectionPage();
userPage.InitializeNextPageRequest(
graphClient,
graphClient.
Users.
Delta().
Request().
Select("Id,displayName,userPrincipalName,mail").
RequestUrl);
var pageRequestCount = 0;
var userIds = new List <string>();
do
{
userPage = await userPage.NextPageRequest.GetAsync(CancellationToken.None);
userPage
.Where(_ => _.DisplayName != null)
.ForEach(_ =>
{
if (Startup.IsCosmosDbGraphEnabled)
{
CosmosDbGraphHelper.Users(_);
userIds.Add(_.Id);
}
});
pageRequestCount++;
}while (userPage.NextPageRequest != null && pageRequestCount < _maxPageRequestsPerTenant);
return(userIds);
}
public static async Task Run([TimerTrigger("0 */10 * * * *")] TimerInfo timer, ILogger log)
{
// アプリケーション設定を取得します
var appConfig = new ConfigurationBuilder().AddEnvironmentVariables().Build();
var graphTenantId = appConfig.GetValue <string>("GraphTenantId");
var graphAuthority = appConfig.GetValue <string>("GraphAuthority");
var graphClientId = appConfig.GetValue <string>("GraphClientId");
var graphClientSecret = appConfig.GetValue <string>("GraphClientSecret");
var graphRedirectUrl = appConfig.GetValue <string>("GraphRedirectUrl");
var graphScope = appConfig.GetValue <string>("GraphScope");
var blobStorage = appConfig.GetValue <string>("BlobStorage");
var blobContainerName = appConfig.GetValue <string>("BlobContainerName");
var blobFileName = appConfig.GetValue <string>("BlobFileName");
var teamsGroupId = appConfig.GetValue <string>("TeamsGroupId");
var eventSenderId = appConfig.GetValue <string>("EventSenderId");
try
{
// OAuth の Access Token を取得します
var clientCredential = new ClientCredential(graphClientSecret);
var clientApplication = new ConfidentialClientApplication(
graphClientId,
graphAuthority + "/" + graphTenantId,
graphRedirectUrl,
clientCredential,
null,
null);
var authenticationResult = await clientApplication.AcquireTokenForClientAsync(graphScope.Split(", "));
// Microsoft Graph Service Client を初期化します
var graphClient = new GraphServiceClient(new DelegateAuthenticationProvider(async msg =>
{
await Task.Run(() =>
{
msg.Headers.Authorization = new AuthenticationHeaderValue("Bearer", authenticationResult.AccessToken);
});
}));
// BLOB ストレージにファイルが存在するかどうかを確認します
var storageAccount = CloudStorageAccount.Parse(blobStorage);
var blobClient = storageAccount.CreateCloudBlobClient();
var blobContainer = blobClient.GetContainerReference(blobContainerName);
var blobFile = blobContainer.GetBlockBlobReference(blobFileName);
var userDeltaCollectionPage = default(IUserDeltaCollectionPage);
if (await blobFile.ExistsAsync())
{
// ファイルがある場合、前回からの差分のユーザーを取得します
userDeltaCollectionPage = new UserDeltaCollectionPage();
userDeltaCollectionPage.InitializeNextPageRequest(graphClient, await blobFile.DownloadTextAsync());
userDeltaCollectionPage = await userDeltaCollectionPage.NextPageRequest.GetAsync();
}
else
{
// ファイルがない場合、すべての差分を取得します
userDeltaCollectionPage = await graphClient.Users.Delta().Request().GetAsync();
}
// ページングして対象のユーザーのみをフィルターします
var targetUsers = new List <User>();
while (true)
{
foreach (var user in userDeltaCollectionPage)
{
// 削除済みユーザーを除外します
if (user.AdditionalData?.ContainsKey("@removed") != true)
{
// ライセンスのないユーザーを除外します
var licenseDetails = await graphClient.Users[user.Id].LicenseDetails.Request().GetAsync();
var servicePlans = licenseDetails.SelectMany(ld => ld.ServicePlans).ToList();
if (servicePlans.Any(sp => sp.ServicePlanId == TeamsServicePlanId) &&
servicePlans.Any(sp => sp.ServicePlanId == ExchangeStandardServicePlanId ||
sp.ServicePlanId == ExchangeEnterpriseServicePlanId))
{
targetUsers.Add(user);
}
}
}
// 次のページがない場合は処理を抜けます
if (userDeltaCollectionPage.NextPageRequest == null)
{
break;
}
// 次のページを取得します
userDeltaCollectionPage = await userDeltaCollectionPage.NextPageRequest.GetAsync();
}
// ユーザーを Teams のメンバーとして追加します
foreach (var user in targetUsers)
{
try
{
await graphClient.Groups[teamsGroupId].Members.References.Request().AddAsync(user);
}
catch (Exception)
{
// 追加済みの場合があるためエラーは無視します
}
}
// ユーザーに会議出席依頼を送付します
if (targetUsers.Any())
{
await graphClient.Users[eventSenderId].Events.Request().AddAsync(new Event()
{
Attendees = targetUsers.Select(user => new Attendee()
{
EmailAddress = new EmailAddress()
{
Address = user.Mail,
Name = user.DisplayName
},
Type = AttendeeType.Required
}),
Subject = "新入社員向け説明会",
Body = new ItemBody()
{
ContentType = BodyType.Html,
Content = "<p>お疲れさまです。</p>"
+ "<p>新入社員向け説明会を開催しますのでご参集ください。</p>"
+ "<p>よろしくお願いします。</p>",
},
Start = new DateTimeTimeZone()
{
DateTime = DateTime.Today.AddDays(2).AddHours(9).ToString("s"),
TimeZone = "Tokyo Standard Time"
},
End = new DateTimeTimeZone()
{
DateTime = DateTime.Today.AddDays(2).AddHours(18).ToString("s"),
TimeZone = "Tokyo Standard Time"
},
});
}
// deltaLink を BLOB ストレージに保存します
if (userDeltaCollectionPage.AdditionalData.TryGetValue("@odata.deltaLink", out var deltaLink))
{
await blobContainer.CreateIfNotExistsAsync();
await blobFile.UploadTextAsync(deltaLink.ToString());
}
}
catch (Exception ex)
{
log.LogError(ex.ToString());
}
}
