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[英]How can I increase the request timeout in Java SDK v4 for Cosmos or Spring data for Cosmos v3?
[英]How can I get the changefeeds Monitored Collection name into my ChangesHander - Containers.ChangesHander<T> (Azure Cosmos v3)
我有一項服務,它產生了許多 Changefeed 來監控許多不同的 Cosmos DB collections。 在 v1 或 2 中,ChangefeedObserver class 包含 ChangefeedObserverContext,我可以從中提取集合名稱。
public Task ProcessChangesAsync(IChangeFeedObserverContext context, IReadOnlyList<Document> deltas, CancellationToken cancellationToken)
{
string observerCollection = string.Empty;
try
{
Regex rx = new Regex(@"\b(\w+$)");
observerCollection = rx.Match(context.FeedResponse.ContentLocation).Value.ToString();
在 v3 中,不是在處理器中傳遞類型,而是傳遞一個委托方法,其簽名不再包含上下文
MS Docs Container.ChangesHandlerDelegate
private ChangeFeedProcessor ChangeFeedInitialize(Container leasingContainer, Container monitoringContainer, string hostName)
{
ChangeFeedProcessor changeFeedProcessor = monitoringContainer
.GetChangeFeedProcessorBuilder<Document>(hostName, this.HandleChangesAsync)
.WithInstanceName("isn")
.WithLeaseContainer(leasingContainer)
.Build();
return changeFeedProcessor;
}
private async Task HandleChangesAsync(IReadOnlyCollection<Document> changes, CancellationToken cancellationToken)
{
ILogger logger = AnalyticsHelper.BuildMeMyLogger(this.loggerFactory);
try
{
AnalyticsChangefeedProcessor changefeedProcessor = new AnalyticsChangefeedProcessor();
await changefeedProcessor.HandleChangesAsync(changes, this.analyticsContext.DataLakeStorageProvider, "CollectionName", logger);
}
catch (Exception ex)
{
logger.LogFailure($"Failed to process changes: {ex.Message}", TagIds.ExceptionAnalytics, ex);
}
}
在上面的代碼中,我有一個創建 Changefeed(通過計時器啟動)的基本方法,以及將處理發送到更大的 class 以采取行動的委托方法,具體取決於監控的集合。
那么,如何將這個changefeeds Monitored Collection 值放入 ChangesHander 中?
你已經有了引用,你可以注入它或者引用它。
private ChangeFeedProcessor ChangeFeedInitialize(Container leasingContainer, Container monitoringContainer, string hostName)
{
ChangeFeedProcessor changeFeedProcessor = monitoringContainer
.GetChangeFeedProcessorBuilder<Document>(hostName,
(IReadOnlyCollection<Document> changes, CancellationToken cancellationToken) =>
this.HandleChangesAsync(monitoringContainer, changes, cancellationToken))
.WithInstanceName("isn")
.WithLeaseContainer(leasingContainer)
.Build();
return changeFeedProcessor;
}
private async Task HandleChangesAsync(Container monitoringContainer, IReadOnlyCollection<Document> changes, CancellationToken cancellationToken)
{
ILogger logger = AnalyticsHelper.BuildMeMyLogger(this.loggerFactory);
try
{
AnalyticsChangefeedProcessor changefeedProcessor = new AnalyticsChangefeedProcessor();
await changefeedProcessor.HandleChangesAsync(changes, this.analyticsContext.DataLakeStorageProvider, "CollectionName", logger);
}
catch (Exception ex)
{
logger.LogFailure($"Failed to process changes: {ex.Message}", TagIds.ExceptionAnalytics, ex);
}
}
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