b003d06003
* For caddy v1 in our org This RP changes all imports for caddyserver/caddy to coredns/caddy. This is the v1 code of caddy. For the coredns/caddy repo the following changes have been made: * anything not needed by us is deleted * all `telemetry` stuff is deleted * all its import paths are also changed to point to coredns/caddy * the v1 branch has been moved to the master branch * a v1.1.0 tag has been added to signal the latest release Signed-off-by: Miek Gieben <miek@miek.nl> * Fix imports Signed-off-by: Miek Gieben <miek@miek.nl> * Group coredns/caddy with out plugins Signed-off-by: Miek Gieben <miek@miek.nl> * remove this file Signed-off-by: Miek Gieben <miek@miek.nl> * Relax import ordering github.com/coredns is now also a coredns dep, this makes github.com/coredns/caddy fit more natural in the list. Signed-off-by: Miek Gieben <miek@miek.nl> * Fix final import Signed-off-by: Miek Gieben <miek@miek.nl>
113 lines
2.3 KiB
Go
113 lines
2.3 KiB
Go
package erratic
|
|
|
|
import (
|
|
"fmt"
|
|
"strconv"
|
|
"time"
|
|
|
|
"github.com/coredns/caddy"
|
|
"github.com/coredns/coredns/core/dnsserver"
|
|
"github.com/coredns/coredns/plugin"
|
|
)
|
|
|
|
func init() { plugin.Register("erratic", setup) }
|
|
|
|
func setup(c *caddy.Controller) error {
|
|
e, err := parseErratic(c)
|
|
if err != nil {
|
|
return plugin.Error("erratic", err)
|
|
}
|
|
|
|
dnsserver.GetConfig(c).AddPlugin(func(next plugin.Handler) plugin.Handler {
|
|
return e
|
|
})
|
|
|
|
return nil
|
|
}
|
|
|
|
func parseErratic(c *caddy.Controller) (*Erratic, error) {
|
|
e := &Erratic{drop: 2}
|
|
drop := false // true if we've seen the drop keyword
|
|
|
|
for c.Next() { // 'erratic'
|
|
for c.NextBlock() {
|
|
switch c.Val() {
|
|
case "drop":
|
|
args := c.RemainingArgs()
|
|
if len(args) > 1 {
|
|
return nil, c.ArgErr()
|
|
}
|
|
|
|
if len(args) == 0 {
|
|
continue
|
|
}
|
|
|
|
amount, err := strconv.ParseInt(args[0], 10, 32)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if amount < 0 {
|
|
return nil, fmt.Errorf("illegal amount value given %q", args[0])
|
|
}
|
|
e.drop = uint64(amount)
|
|
drop = true
|
|
case "delay":
|
|
args := c.RemainingArgs()
|
|
if len(args) > 2 {
|
|
return nil, c.ArgErr()
|
|
}
|
|
|
|
// Defaults.
|
|
e.delay = 2
|
|
e.duration = 100 * time.Millisecond
|
|
if len(args) == 0 {
|
|
continue
|
|
}
|
|
|
|
amount, err := strconv.ParseInt(args[0], 10, 32)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if amount < 0 {
|
|
return nil, fmt.Errorf("illegal amount value given %q", args[0])
|
|
}
|
|
e.delay = uint64(amount)
|
|
|
|
if len(args) > 1 {
|
|
duration, err := time.ParseDuration(args[1])
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
e.duration = duration
|
|
}
|
|
case "truncate":
|
|
args := c.RemainingArgs()
|
|
if len(args) > 1 {
|
|
return nil, c.ArgErr()
|
|
}
|
|
|
|
if len(args) == 0 {
|
|
continue
|
|
}
|
|
|
|
amount, err := strconv.ParseInt(args[0], 10, 32)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if amount < 0 {
|
|
return nil, fmt.Errorf("illegal amount value given %q", args[0])
|
|
}
|
|
e.truncate = uint64(amount)
|
|
case "large":
|
|
e.large = true
|
|
default:
|
|
return nil, c.Errf("unknown property '%s'", c.Val())
|
|
}
|
|
}
|
|
}
|
|
if (e.delay > 0 || e.truncate > 0) && !drop { // delay is set, but we've haven't seen a drop keyword, remove default drop stuff
|
|
e.drop = 0
|
|
}
|
|
|
|
return e, nil
|
|
}
|