mirror of https://github.com/divan/expvarmon.git
35 lines
901 B
Go
35 lines
901 B
Go
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package main
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import (
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"errors"
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"strings"
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)
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// ParseVars returns parsed and validated slice of strings with
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// variables names that will be used for monitoring.
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func ParseVars(def, extra string) ([]string, error) {
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if def == "" && extra == "" {
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return nil, errors.New("no vars specified")
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}
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fields := func(s string) []string {
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return strings.FieldsFunc(s, func(r rune) bool { return r == ',' })
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}
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var ret []string
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ret = append(ret, fields(def)...)
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ret = append(ret, fields(extra)...)
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return ret, nil
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}
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// dot2slice converts "dot-separated" notation into the
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// "slice of strings".
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//
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// "dot-separated" notation is a human-readable format, passed via args.
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// "slice of strings" is used by Jason library.
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//
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// Example: "memstats.Alloc" => []string{"memstats", "Alloc"}
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func dot2slice(name string) []string {
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return strings.FieldsFunc(name, func(r rune) bool { return r == '.' })
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}
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