英文:
When connecting a Rust based mongodb client (rust mongodb 2.6.0) to a replica set, Is there a way to ignore a failure from one of the hosts?
问题
我正在开发一个 Rust 应用程序，用于读取 MongoDB 文档。连接是通过一个代表复制集的字符串完成的： "mongodb://host1:port1,host2:port2..."。
我使用类似以下的代码：
let servers_list = "mongodb://host1:port1,host2:port2,host3:port3";
let mut client_options = ClientOptions::parse(servers_list).await?;
servers_list.app_name = Some("name".to_string());
let client = Client::with_options(client_options)?;
let db = client.database("database_name".to_string())?;
let collection = db.collection::<Document>("collection_name".to_string());
鉴于只有 host1:port1 是有效的，我的读取尝试会导致返回的 Result Err 崩溃。
我希望只从其中一个服务器读取，而不检查它们全部是否有效。
当使用 Compass 连接到相同的复制集时，我会连接到有效的主机，就像尝试连接到其中一个而不提及其他主机一样。
所以我的问题是：
我是否可以在 Rust 库中获得相同的行为，而不需要我自己进行特殊的错误处理？
是否可以使用选项来实现这种行为？
谢谢
英文:
I'm working on a rust application that reads a mongodb document. The connection is done using a string that should represent a replica set: "mongodb://host1:port1,host2:port2...".
I use similar code to the following:
let servers_list = "mongodb://host1:port1,host2:port2,host3:port3";
let mut client_options = ClientOptions::parse(servers_list).await?;
servers_list.app_name - Some("name".to_string());
let client = Client::with_options(client_options)?;
let db = client.database("database_name".to_string())?;
let collection = db.collection::<Document>("collection_name".to_string());
Given that only host1:port1 is valid, my read attempt crashes with a returned Result Err.
I wish to read from just one of the servers, without checking all of them for validity.
When connecting to the same replica set using Compass, I get a connection to the valid host, and its just like trying to connect to that one without mentioning the others.
So my question is:
Can I get the same behavior using the rust library without any special error handling on my side?
Is it possible to use the options to get that behavior?
Thanks
答案1
得分: 0
问题原来是由于糟糕的服务器配置引起的，导致mongodb服务器只是3台独立的服务器，当客户端无法获取其中一个连接时，它返回了错误。
英文:
The issue turned out to be a bad server configuration, which caused the mongodb servers to just be 3 independent servers, and when the client failed to obtain one of the connections it returned the error.
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