y查询类似于
this.ProcessRequestSync(() => this.Client.CreateDocumentQuery<Model>(this.DocumentDBCollectionLink).Where(d => d.name.Equals(name) && d.code.Equals(code) && d.Type.Equals(this.documentType) && d.CreatedBy.Equals(myName).ToList<Model>());
public dynamic ProcessRequestSync(Func<dynamic> getRequest)
{
var delay = TimeSpan.Zero;
var minDelayTime = new TimeSpan(0, 0, 1);
for (;;)
{
try
{
Thread.Sleep(delay);
return getRequest();
}
catch (DocumentClientException documentClientException)
{
var statusCode = (int)documentClientException.StatusCode;
if (statusCode == 429 || statusCode == 503)
{
string errorMessage = string.Format("failed at DocumentDB with {0} status and {1} retry time", statusCode, documentClientException.RetryAfter);
this.Logger.Log(errorMessage );
// Back off if the request rate is too large or the service is temporarily unavailable
delay = TimeSpan.Compare(documentClientException.RetryAfter, minDelayTime) >= 0 ? documentClientException.RetryAfter: minDelayTime;
}
else
{
throw;
}
}
}
}
这是requestRateTooLarge异常引发时重试逻辑的方法。
我不确定,它是否正常工作,
我收到异常:Microsoft.Azure.Documents.RequestRateTooLargeException同时查询和插入大约4000条记录,
我使用相同的重试逻辑进行插入,其工作正常。 我没有收到任何错误,也没有成功插入所有记录,但无法获取查询数据。
答案 0 :(得分:5)
您还需要一个用于AggregateException的catch块,并检查AggregateException.InnerException是否是DocumentClientException并对StatusCode == 429执行相同的检查。由于查询执行是异步的,您可能会获得包含在内部的限制异常AggregateException。
如果您可以发布完整的复制品,我们可以明确地确定问题。
答案 1 :(得分:5)
基于@aravind Ramachandra和@Ryan CrawCour上面/下面的答案,这就是我用来解决问题的方法。
public async Task SaveToDocDb(dynamic jsonDocToSave)
{
using (var client = new DocumentClient(endpoint, authKey))
{
var queryDone = false;
while (!queryDone)
{
try
{
await client.CreateDocumentAsync(docCollectionlink, jsonDocToSave);
queryDone = true;
}
catch (DocumentClientException documentClientException)
{
var statusCode = (int)documentClientException.StatusCode;
if (statusCode == 429 || statusCode == 503)
Thread.Sleep(documentClientException.RetryAfter);
else
throw;
}
catch (AggregateException aggregateException)
{
if(aggregateException.InnerException.GetType() == typeof(DocumentClientException)){
var docExcep = aggregateException.InnerException as DocumentClientException;
var statusCode = (int)docExcep.StatusCode;
if (statusCode == 429 || statusCode == 503)
Thread.Sleep(docExcep.RetryAfter);
else
throw;
}
else
throw;
}
}
}
}