[GO] 如何把这个方法转成 golang ?

let valueString = `[ metric='1' labels={__name__=oracledb_slow_sql_last_call_et, instance=xxxx:9162, job=oracle-xxxx, last_call_et=1,
 logon_time=2022-08-23 09:42:58 +0000 UTC, machine=GX2012, sql_id=9rfj04tf77pv5, status=ACTIVE, username=xxx} value=1 ]`

function parseValueString(valueString) {
    let resultValues = [];
    for (let match of valueString.matchAll(/\[\s*(var|metric)='([^']+)'\s+labels={([^}]*)}\s+value=([^\s]+)\s*\]/g)) {
        let value = {
            type: match[1],
            metric: match[2],
            labels: {},
            value: parseFloat(match[4])
        };
        if (match[3].length > 0) {
            for (let labelPair of match[3].split(",")) {
                let labelParts = labelPair.split("=");
                if (labelParts.length === 2) {
                    value.labels[labelParts[0].trim()] = labelParts[1].trim();
                }
            }
        }
        resultValues.push(value);
    }
    return resultValues;
}