如何设置EventProcessorHost从现在开始读取事件(协调时)？
如何设置EventProcessorHost从现在开始读取事件(协调时)？
提问于 2015-11-24 05:26:49
我们使用EventProcessorHost来接收来自Azure EventHubs的事件。我一直试图(通过EventProcessorOptions.InitialOffsetProvider)将其配置为从UTC读取事件，但它总是从提要的开头读取。我没有保存检查点(我甚至删除了创建的BLOB容器)。我是这样设置的：
DateTime startDate = DateTime.UtcNow;
var epo = new EventProcessorOptions
{
MaxBatchSize = 100,
PrefetchCount = 100,
ReceiveTimeOut = TimeSpan.FromSeconds(120),
InitialOffsetProvider = (name) => startDate
};任何指导都将不胜感激。
回答 3
Stack Overflow用户
回答已采纳
发布于 2015-11-25 11:33:22
我发现blob中的检查点文件夹仍然在那里，我的应用程序正在考虑这一点，并忽略了我在EventProcessorOptions中设置的日期。删除容器后，它开始按预期运行(计入UTC日期)。
Stack Overflow用户
发布于 2018-03-29 05:23:44
我认为这在2.0.0版本中发生了变化-Rajiv的代码现在应该是：
var eventProcessorOptions = new EventProcessorOptions
{
InitialOffsetProvider = (partitionId) => EventPosition.FromEnqueuedTime(DateTime.UtcNow)
};下面是一个包含完全限定类名的示例块：
private static async Task MainAsync(string[] args)
{
try{
Console.WriteLine("Registering EventProcessor...");
string AISEhConnectionStringEndpoint = Configuration["AISEhConnectionStringEndpoint"];
string AISEhConnectionStringSharedAccessKeyName = Configuration["AISEhConnectionStringSharedAccessKeyName"];
string AISEhConnectionStringSharedAccessKey = Configuration["AISEhConnectionStringSharedAccessKey"];
string EhConnectionString = $"Endpoint={AISEhConnectionStringEndpoint};SharedAccessKeyName={AISEhConnectionStringSharedAccessKeyName};SharedAccessKey={AISEhConnectionStringSharedAccessKey}";
string AISEhEntityPath = Configuration["AISEhEntityPath"];
string AISEhConsumerGroupName = Configuration["AISEhConsumerGroupName"];
string AISStorageContainerName = Configuration["AISStorageContainerName"];
string AISStorageAccountName = Configuration["AISStorageAccountName"];
string AISStorageAccountKey = Configuration["AISStorageAccountKey"];
string StorageConnectionString = string.Format("DefaultEndpointsProtocol=https;AccountName={0};AccountKey={1}", AISStorageAccountName, AISStorageAccountKey);
var eventProcessorHost = new Microsoft.Azure.EventHubs.Processor.EventProcessorHost(
AISEhEntityPath,
AISEhConsumerGroupName,
EhConnectionString,
StorageConnectionString,
AISStorageContainerName);
var options = new Microsoft.Azure.EventHubs.Processor.EventProcessorOptions
{
InitialOffsetProvider = (partitionId) => Microsoft.Azure.EventHubs.EventPosition.FromEnqueuedTime(DateTime.UtcNow)
};
// Registers the Event Processor Host and starts receiving messages
await eventProcessorHost.RegisterEventProcessorAsync<GetEvents>(options);
Thread.Sleep(Timeout.Infinite);
// Disposes of the Event Processor Host
await eventProcessorHost.UnregisterEventProcessorAsync();
}
catch(Exception ex)
{
Console.WriteLine(ex.Message);
NLog.LogManager.GetCurrentClassLogger().Error(ex);
throw;
}
}
}以下是我的常规设置，为了帮助解决问题，我隐藏了秘密/确切地址，因为我发现解决这个问题不如拔牙那么令人愉悦：
"AISEhConnectionStringEndpoint": "sb://<my bus address>.servicebus.windows.net/",
"AISEhConnectionStringSharedAccessKeyName": "<my key name>",
"AISEhConnectionStringSharedAccessKey": "<yeah nah>",
"AISEhEntityPath": "<Event Hub entity path>",
"AISEhConsumerGroupName": "<consumer group name e.g $Default>",
"AISStorageContainerName": "<storage container name>",
"AISStorageAccountName": "<storage account name>",
"AISStorageAccountKey": "<yeah nah>",Stack Overflow用户
发布于 2016-02-03 08:36:57
为此，您可以使用EventProcessorOptions类，并提供所需时间的偏移量。
var eventProcessorOptions = new EventProcessorOptions
{
InitialOffsetProvider = (partitionId) => DateTime.UtcNow
};然后，您可以使用任何接受eventProcessorOptions的RegisterEventProcessAsync重载。
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原文链接：
https://stackoverflow.com/questions/33881020
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