86 lines
1.4 KiB
Go
86 lines
1.4 KiB
Go
package parser
|
|
|
|
import (
|
|
"regexp"
|
|
|
|
"bufio"
|
|
"bytes"
|
|
"strings"
|
|
|
|
"github.com/czerwonk/bird_exporter/protocol"
|
|
)
|
|
|
|
type ospfRegex struct {
|
|
area *regexp.Regexp
|
|
counters *regexp.Regexp
|
|
}
|
|
|
|
type ospfContext struct {
|
|
line string
|
|
areas []*protocol.OSPFArea
|
|
current *protocol.OSPFArea
|
|
}
|
|
|
|
func init() {
|
|
ospf = &ospfRegex{
|
|
area: regexp.MustCompile("Area: [^\\s]+ \\(([^\\s]+)\\)"),
|
|
counters: regexp.MustCompile("Number of ([^:]+):\\s*(\\d+)"),
|
|
}
|
|
}
|
|
|
|
var ospf *ospfRegex
|
|
|
|
func ParseOSPF(data []byte) []*protocol.OSPFArea {
|
|
reader := bytes.NewReader(data)
|
|
scanner := bufio.NewScanner(reader)
|
|
|
|
c := &ospfContext{
|
|
areas: make([]*protocol.OSPFArea, 0),
|
|
}
|
|
|
|
for scanner.Scan() {
|
|
c.line = strings.Trim(scanner.Text(), " ")
|
|
parseLineForOspfArea(c)
|
|
parseLineForOspfCounters(c)
|
|
}
|
|
|
|
return c.areas
|
|
}
|
|
|
|
func parseLineForOspfArea(c *ospfContext) {
|
|
m := ospf.area.FindStringSubmatch(c.line)
|
|
if m == nil {
|
|
return
|
|
}
|
|
|
|
a := &protocol.OSPFArea{Name: m[1]}
|
|
c.current = a
|
|
c.areas = append(c.areas, a)
|
|
}
|
|
|
|
func parseLineForOspfCounters(c *ospfContext) {
|
|
if c.current == nil {
|
|
return
|
|
}
|
|
|
|
m := ospf.counters.FindStringSubmatch(c.line)
|
|
if m == nil {
|
|
return
|
|
}
|
|
|
|
name := m[1]
|
|
value := parseInt(m[2])
|
|
|
|
if name == "interfaces" {
|
|
c.current.InterfaceCount = value
|
|
}
|
|
|
|
if name == "neighbors" {
|
|
c.current.NeighborCount = value
|
|
}
|
|
|
|
if name == "adjacent neighbors" {
|
|
c.current.NeighborAdjacentCount = value
|
|
}
|
|
}
|