mirror of
https://github.com/coredns/coredns.git
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00f5c7797e
* mw/kubernetes: remove federation and cidr Remove both as we have a corefile syntax change that handles cidr and remove federation because that is going to be its own middleware. * backwards incompat changes This PR: * removes cidr from kubernetes (core Corefile feature now) * removes federation from kubernets (comes back as new middleware) * [remove autopath - which was already gone, so that already was backwards incompat] * adds `fallthrough` to the *etcd* middleware and makes you enable it. * Fail on unknown properties * documentation * Disable TestHealthCheck as it uses realtime and fails
118 lines
2.3 KiB
Go
118 lines
2.3 KiB
Go
package erratic
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import (
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"fmt"
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"strconv"
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"time"
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"github.com/coredns/coredns/core/dnsserver"
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"github.com/coredns/coredns/middleware"
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"github.com/mholt/caddy"
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)
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func init() {
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caddy.RegisterPlugin("erratic", caddy.Plugin{
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ServerType: "dns",
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Action: setupErratic,
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})
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}
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func setupErratic(c *caddy.Controller) error {
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e, err := parseErratic(c)
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if err != nil {
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return middleware.Error("erratic", err)
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}
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dnsserver.GetConfig(c).AddMiddleware(func(next middleware.Handler) middleware.Handler {
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return e
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})
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return nil
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}
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func parseErratic(c *caddy.Controller) (*Erratic, error) {
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e := &Erratic{drop: 2}
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drop := false // true if we've seen the drop keyword
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for c.Next() { // 'erratic'
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for c.NextBlock() {
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switch c.Val() {
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case "drop":
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args := c.RemainingArgs()
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if len(args) > 1 {
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return nil, c.ArgErr()
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}
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if len(args) == 0 {
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continue
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}
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amount, err := strconv.ParseInt(args[0], 10, 32)
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if err != nil {
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return nil, err
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}
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if amount < 0 {
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return nil, fmt.Errorf("illegal amount value given %q", args[0])
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}
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e.drop = uint64(amount)
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drop = true
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case "delay":
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args := c.RemainingArgs()
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if len(args) > 2 {
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return nil, c.ArgErr()
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}
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// Defaults.
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e.delay = 2
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e.duration = 100 * time.Millisecond
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if len(args) == 0 {
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continue
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}
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amount, err := strconv.ParseInt(args[0], 10, 32)
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if err != nil {
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return nil, err
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}
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if amount < 0 {
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return nil, fmt.Errorf("illegal amount value given %q", args[0])
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}
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e.delay = uint64(amount)
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if len(args) > 1 {
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duration, err := time.ParseDuration(args[1])
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if err != nil {
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return nil, err
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}
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e.duration = duration
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}
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case "truncate":
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args := c.RemainingArgs()
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if len(args) > 1 {
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return nil, c.ArgErr()
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}
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if len(args) == 0 {
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continue
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}
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amount, err := strconv.ParseInt(args[0], 10, 32)
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if err != nil {
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return nil, err
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}
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if amount < 0 {
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return nil, fmt.Errorf("illegal amount value given %q", args[0])
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}
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e.truncate = uint64(amount)
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default:
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return nil, c.Errf("unknown property '%s'", c.Val())
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}
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}
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}
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if (e.delay > 0 || e.truncate > 0) && !drop { // delay is set, but we've haven't seen a drop keyword, remove default drop stuff
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e.drop = 0
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}
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return e, nil
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}
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