584dd87c70
* Update vendor Signed-off-by: Yong Tang <yong.tang.github@outlook.com> * Add route53 plugin This fix adds route53 plugin so that it is possible to query route53 record through CoreDNS. Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
89 lines
2.2 KiB
Go
89 lines
2.2 KiB
Go
package route53
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import (
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"strings"
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"github.com/coredns/coredns/core/dnsserver"
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"github.com/coredns/coredns/plugin"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/aws/credentials"
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"github.com/aws/aws-sdk-go/aws/session"
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"github.com/aws/aws-sdk-go/service/route53"
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"github.com/aws/aws-sdk-go/service/route53/route53iface"
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"github.com/mholt/caddy"
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)
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func init() {
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caddy.RegisterPlugin("route53", caddy.Plugin{
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ServerType: "dns",
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Action: func(c *caddy.Controller) error {
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f := func(credential *credentials.Credentials) route53iface.Route53API {
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return route53.New(session.Must(session.NewSession(&aws.Config{
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Credentials: credential,
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})))
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}
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return setup(c, f)
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},
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})
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}
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func setup(c *caddy.Controller, f func(*credentials.Credentials) route53iface.Route53API) error {
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keys := map[string]string{}
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var credential *credentials.Credentials
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for c.Next() {
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args := c.RemainingArgs()
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for i := 0; i < len(args); i++ {
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parts := strings.SplitN(args[i], ":", 2)
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if len(parts) != 2 {
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return c.Errf("invalid zone '%s'", args[i])
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}
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if parts[0] == "" || parts[1] == "" {
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return c.Errf("invalid zone '%s'", args[i])
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}
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zone := plugin.Host(parts[0]).Normalize()
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if v, ok := keys[zone]; ok && v != parts[1] {
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return c.Errf("conflict zone '%s' ('%s' vs. '%s')", zone, v, parts[1])
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}
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keys[zone] = parts[1]
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}
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for c.NextBlock() {
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switch c.Val() {
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case "aws_access_key":
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v := c.RemainingArgs()
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if len(v) < 2 {
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return c.Errf("invalid access key '%v'", v)
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}
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credential = credentials.NewStaticCredentials(v[0], v[1], "")
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default:
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return c.Errf("unknown property '%s'", c.Val())
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}
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}
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}
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client := f(credential)
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zones := []string{}
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for zone, v := range keys {
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// Make sure enough credentials is needed
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if _, err := client.ListResourceRecordSets(&route53.ListResourceRecordSetsInput{
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HostedZoneId: aws.String(v),
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MaxItems: aws.String("1"),
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}); err != nil {
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return c.Errf("aws error: '%s'", err)
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}
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zones = append(zones, zone)
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}
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dnsserver.GetConfig(c).AddPlugin(func(next plugin.Handler) plugin.Handler {
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return Route53{
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Next: next,
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keys: keys,
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zones: zones,
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client: client,
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}
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})
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return nil
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}
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