Search Queries

Queries

The most basic query is composed of a value but can also contains a field and its value, in the form of field:value. When only specifying the value, all fields are tested against it.

A query can use any field, visible or not, to match a value, such as:

• us-west-1
• dc:us-west-1
• subscriber:rabbitmq
• subscription:linux
• team:webops

Regular Expressions

Javascript’s RegExp object is used to retrieve the matches, thus the following special characters are available to use exclusively with field:value queries.

. - Matches any single character. For example, dc:a.stria matches the datacenter austria.

* - Matches the preceding character 0 or more times. For example, dc:can* matches the datacenters canada and vatican, but not cameroon.

+ - Matches the preceding character 1 or more times. For example, dc:ira+ matches the datacenters iran and iraq, but not ireland.

? - Matches the preceding character 0 or 1 time. For example, dc:oc?o matches the datacenter cameroon, but not morocco.

^ - Matches beginning of input. For example, dc:^por matches the datacenter portgual, but not singapore.

$ - Matches end of input. For example, dc:nea$ matches the datacenter guinea, but not guinea-bissau.

Negative Lookahead

^((?!string).)*$ - Does not match the provided string.

For example, check:^((?!check_critical).)*$ does not match the check check_critical but does match check_warning.

Also, client:^((?!foo).)*$ does not match the client foo but does match bar.

When using negative lookahead, the field name must be unique within the object. The check and client field names can be used for this reason instead of name.

See the RegExp Object documentation for possible quantifiers.