153bd5f767
* [plugin/route53]: Support batch mode operation. Cache all Route53 records internally using `ListResourceRecordPagesWithContext` and serve them from memory. Bonus features: * Support additional r53 record types (`CNAME`, `SOA`, etc) * Support `upstream` option (#2099 filed to support argument optionality) Signed-off-by: Dmitry Ilyevskiy <dmitry.ilyevskiy@getcruise.com> Signed-off-by: Dmitry Ilyevskiy <ilyevsky@gmail.com>
98 lines
2.6 KiB
Go
98 lines
2.6 KiB
Go
package route53
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import (
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"context"
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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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clog "github.com/coredns/coredns/plugin/pkg/log"
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"github.com/coredns/coredns/plugin/pkg/upstream"
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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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var log = clog.NewWithPlugin("route53")
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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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credential := credentials.NewEnvCredentials()
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up, _ := upstream.New(nil)
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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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case "upstream":
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args := c.RemainingArgs()
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// TODO(dilyevsky): There is a bug that causes coredns to crash
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// when no upstream endpoint is provided.
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if len(args) == 0 {
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return c.Errf("local upstream not supported. please provide upstream endpoint")
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}
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var err error
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up, err = upstream.New(args)
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if err != nil {
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return c.Errf("invalid upstream: %v", err)
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}
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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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ctx := context.Background()
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h, err := New(ctx, client, keys, &up)
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if err != nil {
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return c.Errf("failed to create Route53 plugin: %v", err)
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}
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if err := h.Run(ctx); err != nil {
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return c.Errf("failed to initialize Route53 plugin: %v", err)
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}
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dnsserver.GetConfig(c).AddPlugin(func(next plugin.Handler) plugin.Handler {
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h.Next = next
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return h
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})
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return nil
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}
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