英文:
Returning gocql's session variable from function
问题
我有以下的gocql连接。
//cassandra连接
cluster := gocql.NewCluster("localhost")
cluster.Keyspace = "demo"
cluster.DefaultPort = 9042
cluster.Consistency = gocql.Quorum
session, _ = cluster.CreateSession()
defer session.Close()
我想把这段代码放在一个Golang函数中，并返回session变量，但我不知道它的数据类型。我尝试返回*Session，但是会报错。有什么办法可以解决吗？
英文:
I have the following gocql connection.
//cassandra connection
cluster := gocql.NewCluster("localhost")
cluster.Keyspace = "demo"
cluster.DefaultPort = 9042
cluster.Consistency = gocql.Quorum
session, _ = cluster.CreateSession()
defer session.Close()
I want to put this inside a golang function and return the session variable,but I don't know its datatype. I tried returning *Session but it gives me an error. Any idea how to do this.
答案1
得分: 2
根据文档（http://godoc.org/github.com/gocql/gocql#ClusterConfig.CreateSession），类型是*gocql.Session。但是请注意，如果你延迟调用session.Close()，它将在你返回时立即运行，这意味着你将永远不会返回一个有效的连接。你需要在调用函数中关闭会话。
英文:
Per the documentation (http://godoc.org/github.com/gocql/gocql#ClusterConfig.CreateSession) the type is *gocql.Session. I would note, however, that if you defer the session.Close() call, it will run as soon as you return, meaning you will never return a valid connection. You will have to close the session in the calling function.
答案2
得分: 0
cluster.CreateSession() 返回 *gocql.Session, error。
也许如果你能分享你的实际代码并告诉我们你遇到了什么错误，这个问题会更容易回答。
顺便说一下，有一个邮件列表可以用于更复杂的问题，还有Github上的问题跟踪器。
英文:
cluster.CreateSession() returns *gocql.Session, error
Maybe if you could share your actual code and tell us what error you are getting, this question would be easier to answer.
BTW there is a mailing list for more involved questions, as well as the issue tracker on Github.
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