mirror of https://github.com/status-im/consul.git
305 lines
8.9 KiB
Go
305 lines
8.9 KiB
Go
package serverdiscovery
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"io"
|
|
"testing"
|
|
"time"
|
|
|
|
mock "github.com/stretchr/testify/mock"
|
|
"github.com/stretchr/testify/require"
|
|
"google.golang.org/grpc/codes"
|
|
"google.golang.org/grpc/status"
|
|
|
|
acl "github.com/hashicorp/consul/acl"
|
|
resolver "github.com/hashicorp/consul/acl/resolver"
|
|
"github.com/hashicorp/consul/agent/consul/autopilotevents"
|
|
"github.com/hashicorp/consul/agent/consul/stream"
|
|
"github.com/hashicorp/consul/agent/grpc/public"
|
|
"github.com/hashicorp/consul/agent/grpc/public/testutils"
|
|
"github.com/hashicorp/consul/proto-public/pbserverdiscovery"
|
|
"github.com/hashicorp/consul/proto/prototest"
|
|
"github.com/hashicorp/consul/sdk/testutil"
|
|
)
|
|
|
|
const testACLToken = "eb61f1ed-65a4-4da6-8d3d-0564bd16c965"
|
|
|
|
func TestWatchServers_StreamLifeCycle(t *testing.T) {
|
|
// The flow for this test is roughly:
|
|
//
|
|
// 1. Open a WatchServers stream
|
|
// 2. Observe the snapshot message is sent back through
|
|
// the stream.
|
|
// 3. Publish an event that changes to 2 servers.
|
|
// 4. See the corresponding message sent back through the stream.
|
|
// 5. Send a NewCloseSubscriptionEvent for the token secret.
|
|
// 6. See that a new snapshot is taken and the corresponding message
|
|
// gets sent back. If there were multiple subscribers for the topic
|
|
// then this should not happen. However with the current EventPublisher
|
|
// implementation, whenever the last subscriber for a topic has its
|
|
// subscription closed then the publisher will delete the whole topic
|
|
// buffer. When that happens, resubscribing will see no snapshot
|
|
// cache, or latest event in the buffer and force creating a new snapshot.
|
|
// 7. Publish another event to move to 3 servers.
|
|
// 8. Ensure that the message gets sent through the stream. Also
|
|
// this will validate that no other 1 or 2 server event is
|
|
// seen after stream reinitialization.
|
|
|
|
srv1 := autopilotevents.ReadyServerInfo{
|
|
ID: "9aeb73f6-e83e-43c1-bdc9-ca5e43efe3e4",
|
|
Address: "198.18.0.1",
|
|
Version: "1.12.0",
|
|
}
|
|
srv2 := autopilotevents.ReadyServerInfo{
|
|
ID: "eec8721f-c42b-48da-a5a5-07565158015e",
|
|
Address: "198.18.0.2",
|
|
Version: "1.12.3",
|
|
}
|
|
srv3 := autopilotevents.ReadyServerInfo{
|
|
ID: "256796f2-3a38-4f80-8cef-375c3cb3aa1f",
|
|
Address: "198.18.0.3",
|
|
Version: "1.12.3",
|
|
}
|
|
|
|
oneServerEventPayload := autopilotevents.EventPayloadReadyServers{srv1}
|
|
twoServerEventPayload := autopilotevents.EventPayloadReadyServers{srv1, srv2}
|
|
threeServerEventPayload := autopilotevents.EventPayloadReadyServers{srv1, srv2, srv3}
|
|
|
|
oneServerResponse := &pbserverdiscovery.WatchServersResponse{
|
|
Servers: []*pbserverdiscovery.Server{
|
|
{
|
|
Id: srv1.ID,
|
|
Address: srv1.Address,
|
|
Version: srv1.Version,
|
|
},
|
|
},
|
|
}
|
|
|
|
twoServerResponse := &pbserverdiscovery.WatchServersResponse{
|
|
Servers: []*pbserverdiscovery.Server{
|
|
{
|
|
Id: srv1.ID,
|
|
Address: srv1.Address,
|
|
Version: srv1.Version,
|
|
},
|
|
{
|
|
Id: srv2.ID,
|
|
Address: srv2.Address,
|
|
Version: srv2.Version,
|
|
},
|
|
},
|
|
}
|
|
|
|
threeServerResponse := &pbserverdiscovery.WatchServersResponse{
|
|
Servers: []*pbserverdiscovery.Server{
|
|
{
|
|
Id: srv1.ID,
|
|
Address: srv1.Address,
|
|
Version: srv1.Version,
|
|
},
|
|
{
|
|
Id: srv2.ID,
|
|
Address: srv2.Address,
|
|
Version: srv2.Version,
|
|
},
|
|
{
|
|
Id: srv3.ID,
|
|
Address: srv3.Address,
|
|
Version: srv3.Version,
|
|
},
|
|
},
|
|
}
|
|
|
|
// setup the event publisher and snapshot handler
|
|
handler, publisher := setupPublisher(t)
|
|
// we only expect this to be called once. For the rest of the
|
|
// test we ought to be able to resume the stream.
|
|
handler.expect(testACLToken, 0, 1, oneServerEventPayload)
|
|
handler.expect(testACLToken, 2, 3, twoServerEventPayload)
|
|
|
|
// setup the mock ACLResolver and its expectations
|
|
// 2 times authorization should succeed and the third should fail.
|
|
resolver := newMockACLResolver(t)
|
|
resolver.On("ResolveTokenAndDefaultMeta", testACLToken, mock.Anything, mock.Anything).
|
|
Return(testutils.TestAuthorizerServiceWriteAny(t), nil).Twice()
|
|
|
|
// add the token to the requests context
|
|
ctx := public.ContextWithToken(context.Background(), testACLToken)
|
|
|
|
// setup the server
|
|
server := NewServer(Config{
|
|
Publisher: publisher,
|
|
Logger: testutil.Logger(t),
|
|
ACLResolver: resolver,
|
|
})
|
|
|
|
// Run the server and get a test client for it
|
|
client := testClient(t, server)
|
|
|
|
// 1. Open the WatchServers stream
|
|
serverStream, err := client.WatchServers(ctx, &pbserverdiscovery.WatchServersRequest{Wan: false})
|
|
require.NoError(t, err)
|
|
|
|
rspCh := handleReadyServersStream(t, serverStream)
|
|
|
|
// 2. Observe the snapshot message is sent back through the stream.
|
|
rsp := mustGetServers(t, rspCh)
|
|
require.NotNil(t, rsp)
|
|
prototest.AssertDeepEqual(t, oneServerResponse, rsp)
|
|
|
|
// 3. Publish an event that changes to 2 servers.
|
|
publisher.Publish([]stream.Event{
|
|
{
|
|
Topic: autopilotevents.EventTopicReadyServers,
|
|
Index: 2,
|
|
Payload: twoServerEventPayload,
|
|
},
|
|
})
|
|
|
|
// 4. See the corresponding message sent back through the stream.
|
|
rsp = mustGetServers(t, rspCh)
|
|
require.NotNil(t, rsp)
|
|
prototest.AssertDeepEqual(t, twoServerResponse, rsp)
|
|
|
|
// 5. Send a NewCloseSubscriptionEvent for the token secret.
|
|
publisher.Publish([]stream.Event{
|
|
stream.NewCloseSubscriptionEvent([]string{testACLToken}),
|
|
})
|
|
|
|
// 6. Observe another snapshot message
|
|
rsp = mustGetServers(t, rspCh)
|
|
require.NotNil(t, rsp)
|
|
prototest.AssertDeepEqual(t, twoServerResponse, rsp)
|
|
|
|
// 7. Publish another event to move to 3 servers.
|
|
publisher.Publish([]stream.Event{
|
|
{
|
|
Topic: autopilotevents.EventTopicReadyServers,
|
|
Index: 4,
|
|
Payload: threeServerEventPayload,
|
|
},
|
|
})
|
|
|
|
// 8. Ensure that the message gets sent through the stream. Also
|
|
// this will validate that no other 1 or 2 server event is
|
|
// seen after stream reinitialization.
|
|
rsp = mustGetServers(t, rspCh)
|
|
require.NotNil(t, rsp)
|
|
prototest.AssertDeepEqual(t, threeServerResponse, rsp)
|
|
}
|
|
|
|
func TestWatchServers_ACLToken_PermissionDenied(t *testing.T) {
|
|
// setup the event publisher and snapshot handler
|
|
_, publisher := setupPublisher(t)
|
|
|
|
resolver := newMockACLResolver(t)
|
|
resolver.On("ResolveTokenAndDefaultMeta", testACLToken, mock.Anything, mock.Anything).
|
|
Return(testutils.TestAuthorizerDenyAll(t), nil).Once()
|
|
|
|
// add the token to the requests context
|
|
ctx := public.ContextWithToken(context.Background(), testACLToken)
|
|
|
|
// setup the server
|
|
server := NewServer(Config{
|
|
Publisher: publisher,
|
|
Logger: testutil.Logger(t),
|
|
ACLResolver: resolver,
|
|
})
|
|
|
|
// Run the server and get a test client for it
|
|
client := testClient(t, server)
|
|
|
|
// 1. Open the WatchServers stream
|
|
serverStream, err := client.WatchServers(ctx, &pbserverdiscovery.WatchServersRequest{Wan: false})
|
|
require.NoError(t, err)
|
|
rspCh := handleReadyServersStream(t, serverStream)
|
|
|
|
// Expect to get an Unauthenticated error immediately.
|
|
err = mustGetError(t, rspCh)
|
|
require.Equal(t, codes.PermissionDenied.String(), status.Code(err).String())
|
|
}
|
|
|
|
func TestWatchServers_ACLToken_Unauthenticated(t *testing.T) {
|
|
// setup the event publisher and snapshot handler
|
|
_, publisher := setupPublisher(t)
|
|
|
|
aclResolver := newMockACLResolver(t)
|
|
aclResolver.On("ResolveTokenAndDefaultMeta", testACLToken, mock.Anything, mock.Anything).
|
|
Return(resolver.Result{}, acl.ErrNotFound).Once()
|
|
|
|
// add the token to the requests context
|
|
ctx := public.ContextWithToken(context.Background(), testACLToken)
|
|
|
|
// setup the server
|
|
server := NewServer(Config{
|
|
Publisher: publisher,
|
|
Logger: testutil.Logger(t),
|
|
ACLResolver: aclResolver,
|
|
})
|
|
|
|
// Run the server and get a test client for it
|
|
client := testClient(t, server)
|
|
|
|
// 1. Open the WatchServers stream
|
|
serverStream, err := client.WatchServers(ctx, &pbserverdiscovery.WatchServersRequest{Wan: false})
|
|
require.NoError(t, err)
|
|
rspCh := handleReadyServersStream(t, serverStream)
|
|
|
|
// Expect to get an Unauthenticated error immediately.
|
|
err = mustGetError(t, rspCh)
|
|
require.Equal(t, codes.Unauthenticated.String(), status.Code(err).String())
|
|
}
|
|
|
|
func handleReadyServersStream(t *testing.T, stream pbserverdiscovery.ServerDiscoveryService_WatchServersClient) <-chan serversOrError {
|
|
t.Helper()
|
|
|
|
rspCh := make(chan serversOrError)
|
|
go func() {
|
|
for {
|
|
rsp, err := stream.Recv()
|
|
if errors.Is(err, io.EOF) ||
|
|
errors.Is(err, context.Canceled) ||
|
|
errors.Is(err, context.DeadlineExceeded) {
|
|
return
|
|
}
|
|
rspCh <- serversOrError{
|
|
rsp: rsp,
|
|
err: err,
|
|
}
|
|
}
|
|
}()
|
|
return rspCh
|
|
}
|
|
|
|
func mustGetServers(t *testing.T, ch <-chan serversOrError) *pbserverdiscovery.WatchServersResponse {
|
|
t.Helper()
|
|
|
|
select {
|
|
case rsp := <-ch:
|
|
require.NoError(t, rsp.err)
|
|
return rsp.rsp
|
|
case <-time.After(1 * time.Second):
|
|
t.Fatal("timeout waiting for WatchServersResponse")
|
|
return nil
|
|
}
|
|
}
|
|
|
|
func mustGetError(t *testing.T, ch <-chan serversOrError) error {
|
|
t.Helper()
|
|
|
|
select {
|
|
case rsp := <-ch:
|
|
require.Error(t, rsp.err)
|
|
return rsp.err
|
|
case <-time.After(1 * time.Second):
|
|
t.Fatal("timeout waiting for WatchServersResponse")
|
|
return nil
|
|
}
|
|
}
|
|
|
|
type serversOrError struct {
|
|
rsp *pbserverdiscovery.WatchServersResponse
|
|
err error
|
|
}
|