Multiple `__name__` matchers not permitted

[greptimeteam]

Multiple `__name__` matchers not permitted

[gerboland]

@yuanbohan fantastic, thank you

[yuanbohan]

Thanks for this issue, and I will fix it ASAP, and related test cases will be added.

[yuanbohan]

Hi @gerboland , this bug has been fixed in v0.1.3.

r#"{__name__=~"http.*",__name__=~".*total",environment=~"staging|testing|development",method!="GET"} @ 1609746000 offset 5m"#

The AST is:

AST: VectorSelector(VectorSelector { name: None, matchers: Matchers { matchers: {Matcher { op: Re(http.*), name: "__name__", value: "http.*" }, Matcher { op: NotEqual, name: "method", value: "GET" }, Matcher { op: Re(staging|testing|development), name: "environment", value: "staging|testing|development" }, Matcher { op: Re(.*total), name: "__name__", value: ".*total" }} }, offset: Some(Pos(300s)), at: Some(At(SystemTime { tv_sec: 1609746000, tv_nsec: 0 })) })