func (p *Postgresql) accRow(meas_name string, row scanner, acc telegraf.Accumulator) error {
var columnVars []interface{}
var dbname bytes.Buffer
// this is where we'll store the column name with its *interface{}
columnMap := make(map[string]*interface{})
for _, column := range p.OrderedColumns {
columnMap[column] = new(interface{})
}
// populate the array of interface{} with the pointers in the right order
for i := 0; i < len(columnMap); i++ {
columnVars = append(columnVars, columnMap[p.OrderedColumns[i]])
}
// deconstruct array of variables and send to Scan
err := row.Scan(columnVars...)
if err != nil {
return err
}
if columnMap["datname"] != nil {
// extract the database name from the column map
dbnameChars := (*columnMap["datname"]).([]uint8)
for i := 0; i < len(dbnameChars); i++ {
dbname.WriteString(string(dbnameChars[i]))
}
} else {
dbname.WriteString("postgres")
}
var tagAddress string
tagAddress, err = p.SanitizedAddress()
if err != nil {
return err
}
// Process the additional tags
tags := map[string]string{}
tags["server"] = tagAddress
tags["db"] = dbname.String()
var isATag int
fields := make(map[string]interface{})
for col, val := range columnMap {
if acc.Debug() {
log.Printf("postgresql_extensible: column: %s = %T: %s\n", col, *val, *val)
}
_, ignore := ignoredColumns[col]
if !ignore && *val != nil {
isATag = 0
for tag := range p.AdditionalTags {
if col == p.AdditionalTags[tag] {
isATag = 1
value_type_p := fmt.Sprintf(`%T`, *val)
if value_type_p == "[]uint8" {
tags[col] = fmt.Sprintf(`%s`, *val)
} else if value_type_p == "int64" {
tags[col] = fmt.Sprintf(`%v`, *val)
}
}
}
if isATag == 0 {
fields[col] = *val
}
}
}
acc.AddFields(meas_name, fields, tags)
return nil
}