117 lines
3.2 KiB
Go
117 lines
3.2 KiB
Go
package consul
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import (
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"context"
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"net"
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"testing"
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"time"
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"github.com/stretchr/testify/require"
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gogrpc "google.golang.org/grpc"
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"github.com/hashicorp/consul/agent/pool"
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"github.com/hashicorp/consul/proto/pbpeering"
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"github.com/hashicorp/consul/sdk/testutil"
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"github.com/hashicorp/consul/testrpc"
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)
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func TestPeeringBackend_DoesNotForwardToDifferentDC(t *testing.T) {
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if testing.Short() {
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t.Skip("too slow for testing.Short")
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}
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t.Parallel()
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_, s1 := testServerDC(t, "dc1")
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_, s2 := testServerDC(t, "dc2")
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joinWAN(t, s2, s1)
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testrpc.WaitForLeader(t, s1.RPC, "dc1")
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testrpc.WaitForLeader(t, s2.RPC, "dc2")
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// make a grpc client to dial s2 directly
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ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
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t.Cleanup(cancel)
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conn, err := gogrpc.DialContext(ctx, s2.config.RPCAddr.String(),
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gogrpc.WithContextDialer(newServerDialer(s2.config.RPCAddr.String())),
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gogrpc.WithInsecure(),
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gogrpc.WithBlock())
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require.NoError(t, err)
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t.Cleanup(func() { conn.Close() })
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peeringClient := pbpeering.NewPeeringServiceClient(conn)
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// GenerateToken request should fail against dc1, because we are dialing dc2. The GenerateToken request should never be forwarded across datacenters.
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req := pbpeering.GenerateTokenRequest{
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PeerName: "peer1-usw1",
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Datacenter: "dc1",
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}
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_, err = peeringClient.GenerateToken(ctx, &req)
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require.Error(t, err)
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require.Contains(t, err.Error(), "requests to generate peering tokens cannot be forwarded to remote datacenters")
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}
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func TestPeeringBackend_ForwardToLeader(t *testing.T) {
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t.Parallel()
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_, conf1 := testServerConfig(t)
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server1, err := newServer(t, conf1)
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require.NoError(t, err)
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_, conf2 := testServerConfig(t)
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conf2.Bootstrap = false
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server2, err := newServer(t, conf2)
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require.NoError(t, err)
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// Join a 2nd server (not the leader)
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testrpc.WaitForLeader(t, server1.RPC, "dc1")
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joinLAN(t, server2, server1)
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testrpc.WaitForLeader(t, server2.RPC, "dc1")
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// Make a write call to server2 and make sure it gets forwarded to server1
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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t.Cleanup(cancel)
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// Dial server2 directly
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conn, err := gogrpc.DialContext(ctx, server2.config.RPCAddr.String(),
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gogrpc.WithContextDialer(newServerDialer(server2.config.RPCAddr.String())),
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gogrpc.WithInsecure(),
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gogrpc.WithBlock())
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require.NoError(t, err)
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t.Cleanup(func() { conn.Close() })
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peeringClient := pbpeering.NewPeeringServiceClient(conn)
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testutil.RunStep(t, "forward a write", func(t *testing.T) {
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// Do the grpc Write call to server2
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req := pbpeering.GenerateTokenRequest{
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Datacenter: "dc1",
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PeerName: "foo",
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}
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_, err := peeringClient.GenerateToken(ctx, &req)
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require.NoError(t, err)
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// TODO(peering) check that state store is updated on leader, indicating a forwarded request after state store
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// is implemented.
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})
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}
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func newServerDialer(serverAddr string) func(context.Context, string) (net.Conn, error) {
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return func(ctx context.Context, addr string) (net.Conn, error) {
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d := net.Dialer{}
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conn, err := d.DialContext(ctx, "tcp", serverAddr)
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if err != nil {
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return nil, err
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}
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_, err = conn.Write([]byte{byte(pool.RPCGRPC)})
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if err != nil {
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conn.Close()
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return nil, err
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}
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return conn, nil
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}
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}
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