telegraf/metric/escape.go

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2016-12-01 15:18:46 +00:00
package metric
import (
"strings"
)
var (
// escaper is for escaping:
// - tag keys
// - tag values
// - field keys
// see https://docs.influxdata.com/influxdb/v1.0/write_protocols/line_protocol_tutorial/#special-characters-and-keywords
escaper = strings.NewReplacer(`,`, `\,`, `"`, `\"`, ` `, `\ `, `=`, `\=`)
unEscaper = strings.NewReplacer(`\,`, `,`, `\"`, `"`, `\ `, ` `, `\=`, `=`)
// nameEscaper is for escaping measurement names only.
// see https://docs.influxdata.com/influxdb/v1.0/write_protocols/line_protocol_tutorial/#special-characters-and-keywords
nameEscaper = strings.NewReplacer(`,`, `\,`, ` `, `\ `)
nameUnEscaper = strings.NewReplacer(`\,`, `,`, `\ `, ` `)
// stringFieldEscaper is for escaping string field values only.
// see https://docs.influxdata.com/influxdb/v1.0/write_protocols/line_protocol_tutorial/#special-characters-and-keywords
stringFieldEscaper = strings.NewReplacer(`"`, `\"`)
stringFieldUnEscaper = strings.NewReplacer(`\"`, `"`)
)
func escape(s string, t string) string {
switch t {
case "fieldkey", "tagkey", "tagval":
return escaper.Replace(s)
case "name":
return nameEscaper.Replace(s)
case "fieldval":
return stringFieldEscaper.Replace(s)
}
return s
}
func unescape(s string, t string) string {
switch t {
case "fieldkey", "tagkey", "tagval":
return unEscaper.Replace(s)
case "name":
return nameUnEscaper.Replace(s)
case "fieldval":
return stringFieldUnEscaper.Replace(s)
}
return s
}