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// Copyright 2019 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package v2
import (
"encoding/xml"
"net/http"
"time"
"github.com/prometheus-community/bind_exporter/bind"
)
type Isc struct {
Bind Bind `xml:"bind"`
XMLName xml.Name `xml:"isc"`
}
type Bind struct {
Statistics Statistics `xml:"statistics"`
}
type Statistics struct {
Memory struct{} `xml:"memory"`
Server Server `xml:"server"`
Socketmgr struct{} `xml:"socketmgr"`
Taskmgr bind.TaskManager `xml:"taskmgr"`
Views []View `xml:"views>view"`
}
type Server struct {
BootTime time.Time `xml:"boot-time"`
ConfigTime time.Time `xml:"config-time"`
NSStats []Counter `xml:"nsstat"`
QueriesIn []Counter `xml:"queries-in>rdtype"`
Requests []Counter `xml:"requests>opcode"`
SocketStats []Counter `xml:"socketstat"`
ZoneStats []Counter `xml:"zonestat"`
}
type View struct {
Name string `xml:"name"`
Cache []bind.Gauge `xml:"cache>rrset"`
Rdtype []Counter `xml:"rdtype"`
Resstat []Counter `xml:"resstat"`
Zones []Zone `xml:"zones>zone"`
}
type Zone struct {
Name string `xml:"name"`
Rdataclass string `xml:"rdataclass"`
Serial uint64 `xml:"serial"`
}
type Counter struct {
Name string `xml:"name"`
Counter uint64 `xml:"counter"`
}
// Client implements bind.Client and can be used to query a BIND v2 API.
type Client struct {
*bind.XMLClient
}
// NewClient returns an initialized Client.
func NewClient(url string, c *http.Client) *Client {
return &Client{XMLClient: bind.NewXMLClient(url, c)}
}
// Stats implements bind.Stats. The BIND v2 API doesn't provide individual
// endpoints for different statistic groups, the passed parameters don't have
// any effect.
func (c *Client) Stats(...bind.StatisticGroup) (bind.Statistics, error) {
s := bind.Statistics{}
root := Isc{}
if err := c.Get("/", &root); err != nil {
return s, err
}
stats := root.Bind.Statistics
s.Server.BootTime = stats.Server.BootTime
for _, t := range stats.Server.QueriesIn {
s.Server.IncomingQueries = append(s.Server.IncomingQueries, bind.Counter(t))
}
for _, t := range stats.Server.Requests {
s.Server.IncomingRequests = append(s.Server.IncomingRequests, bind.Counter(t))
}
for _, t := range stats.Server.NSStats {
s.Server.NameServerStats = append(s.Server.NameServerStats, bind.Counter(t))
}
for _, t := range stats.Server.ZoneStats {
s.Server.ZoneStatistics = append(s.Server.ZoneStatistics, bind.Counter(t))
}
for _, view := range stats.Views {
v := bind.View{
Name: view.Name,
Cache: view.Cache,
}
zv := bind.ZoneView{
Name: view.Name,
}
for _, t := range view.Rdtype {
v.ResolverQueries = append(v.ResolverQueries, bind.Counter(t))
}
for _, t := range view.Resstat {
v.ResolverStats = append(v.ResolverStats, bind.Counter(t))
}
for _, zone := range view.Zones {
if zone.Rdataclass != "IN" {
continue
}
z := bind.ZoneCounter{
Name: zone.Name,
Serial: zone.Serial,
}
zv.ZoneData = append(zv.ZoneData, z)
}
s.ZoneViews = append(s.ZoneViews, zv)
s.Views = append(s.Views, v)
}
s.TaskManager = stats.Taskmgr
return s, nil
}
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