"Invalid NEST response built from a unsuccessful () low level call on POST"

Question

以下代码大部分时间都有效，但有时会抛出异常并显示此消息：

Invalid NEST response built from a unsuccessful () low level call on POST: /queries2020-09/_search?typed_keys=true

   var response = await client.SearchAsync<LogEntry>(s => s
        .Query(q => q
            .Bool(b => b
                .Must(m => m.DateRange(r => r.Field(l => l.DateTimeUTC)
                        .GreaterThanOrEquals(new DateMathExpression(since))),
                    m => m.Term(term)
                )))
        .Aggregations(a => a
            .Sum("total-cost", descriptor => descriptor
                .Field(f => f.Cost)
                .Missing(1)))
        .Size(0));

    if (!response.IsValid)
    {                
        throw new Exception("Elasticsearch response error. " + response.ToString());
    }

这似乎是一条在问答网站上经常弹出的非常笼统的消息。如何调试它以查看根本原因？

使用 NEST 7.6.1.

Answer 1

写出 debug information 可能比 .ToString()

更好

if (!response.IsValid)
{                
    throw new Exception("Elasticsearch response error. " + response.DebugInformation);
}

调试信息包括审计跟踪和有关 error/exception 的详细信息（如果有的话）。这是一种以人类可读的形式收集 IResponse 上可用的相关信息的便捷方法。

如果始终检查响应的有效性并抛出异常，您可能需要在 ConnectionSettings 上设置 ThrowExceptions() 以在发生错误时抛出异常。

"Invalid NEST response built from a unsuccessful () low level call on POST"

"Invalid NEST response built from a unsuccessful () low level call on POST"

elasticsearch

nest