c961acbb6e
Respond to notifies and allow a secondary to follow the SOA parameters to update a zone from a primary. Also sprinkle it with logging. Also extend monitoring to include qtype in more metrics.
108 lines
2.2 KiB
Go
108 lines
2.2 KiB
Go
package setup
|
|
|
|
import (
|
|
"os"
|
|
|
|
"github.com/miekg/coredns/middleware"
|
|
"github.com/miekg/coredns/middleware/file"
|
|
)
|
|
|
|
// File sets up the file middleware.
|
|
func File(c *Controller) (middleware.Middleware, error) {
|
|
zones, err := fileParse(c)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Add startup functions to notify the master.
|
|
for _, n := range zones.Names {
|
|
if len(zones.Z[n].TransferTo) > 0 {
|
|
c.Startup = append(c.Startup, func() error {
|
|
zones.Z[n].Notify()
|
|
return err
|
|
})
|
|
}
|
|
}
|
|
|
|
return func(next middleware.Handler) middleware.Handler {
|
|
return file.File{Next: next, Zones: zones}
|
|
}, nil
|
|
|
|
}
|
|
|
|
func fileParse(c *Controller) (file.Zones, error) {
|
|
z := make(map[string]*file.Zone)
|
|
names := []string{}
|
|
for c.Next() {
|
|
if c.Val() == "file" {
|
|
// file db.file [origin]
|
|
if !c.NextArg() {
|
|
return file.Zones{}, c.ArgErr()
|
|
}
|
|
fileName := c.Val()
|
|
|
|
origins := []string{c.ServerBlockHosts[c.ServerBlockHostIndex]}
|
|
args := c.RemainingArgs()
|
|
if len(args) > 0 {
|
|
origins = args
|
|
}
|
|
|
|
reader, err := os.Open(fileName)
|
|
if err != nil {
|
|
return file.Zones{}, err
|
|
}
|
|
|
|
for i, _ := range origins {
|
|
origins[i] = middleware.Host(origins[i]).Normalize()
|
|
zone, err := file.Parse(reader, origins[i], fileName)
|
|
if err == nil {
|
|
z[origins[i]] = zone
|
|
}
|
|
names = append(names, origins[i])
|
|
}
|
|
|
|
for c.NextBlock() {
|
|
t, _, e := parseTransfer(c)
|
|
if e != nil {
|
|
return file.Zones{}, e
|
|
}
|
|
// discard from, here, maybe check and show log when we do?
|
|
for _, origin := range origins {
|
|
if t != "" {
|
|
z[origin].TransferTo = append(z[origin].TransferTo, t)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return file.Zones{Z: z, Names: names}, nil
|
|
}
|
|
|
|
// transfer to [address]
|
|
func parseTransfer(c *Controller) (to, from string, err error) {
|
|
what := c.Val()
|
|
if !c.NextArg() {
|
|
return "", "", c.ArgErr()
|
|
}
|
|
value := c.Val()
|
|
switch what {
|
|
case "transfer":
|
|
if !c.NextArg() {
|
|
return "", "", c.ArgErr()
|
|
}
|
|
if value == "to" {
|
|
to = c.Val()
|
|
if to != "*" {
|
|
to = middleware.Addr(to).Normalize()
|
|
}
|
|
}
|
|
if value == "from" {
|
|
from = c.Val()
|
|
if from == "*" {
|
|
// print some kind of error? TODO(miek)
|
|
}
|
|
from = middleware.Addr(from).Normalize()
|
|
}
|
|
}
|
|
return
|
|
}
|