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consul/agent/rpc/subscribe/subscribe_test.go

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package subscribe
import (
"context"
"errors"
"io"
"net"
"testing"
"time"
"github.com/google/go-cmp/cmp"
"github.com/google/go-cmp/cmp/cmpopts"
"github.com/hashicorp/go-hclog"
"github.com/hashicorp/go-uuid"
"github.com/stretchr/testify/require"
"golang.org/x/sync/errgroup"
gogrpc "google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"github.com/hashicorp/consul/acl"
"github.com/hashicorp/consul/agent/consul/state"
"github.com/hashicorp/consul/agent/consul/stream"
"github.com/hashicorp/consul/agent/grpc"
"github.com/hashicorp/consul/agent/structs"
"github.com/hashicorp/consul/api"
"github.com/hashicorp/consul/proto/pbcommon"
"github.com/hashicorp/consul/proto/pbservice"
"github.com/hashicorp/consul/proto/pbsubscribe"
"github.com/hashicorp/consul/types"
)
func TestServer_Subscribe_IntegrationWithBackend(t *testing.T) {
backend, err := newTestBackend()
require.NoError(t, err)
addr := runTestServer(t, NewServer(backend, hclog.New(nil)))
ids := newCounter()
var req *structs.RegisterRequest
runStep(t, "register two instances of the redis service", func(t *testing.T) {
req = &structs.RegisterRequest{
Node: "node1",
Address: "3.4.5.6",
Datacenter: "dc1",
Service: &structs.NodeService{
ID: "redis1",
Service: "redis",
Address: "3.4.5.6",
Port: 8080,
},
}
require.NoError(t, backend.store.EnsureRegistration(ids.Next("reg2"), req))
req = &structs.RegisterRequest{
Node: "node2",
Address: "1.2.3.4",
Datacenter: "dc1",
Service: &structs.NodeService{
ID: "redis1",
Service: "redis",
Address: "1.1.1.1",
Port: 8080,
},
}
require.NoError(t, backend.store.EnsureRegistration(ids.Next("reg3"), req))
})
runStep(t, "register a service by a different name", func(t *testing.T) {
req := &structs.RegisterRequest{
Node: "other",
Address: "2.3.4.5",
Datacenter: "dc1",
Service: &structs.NodeService{
ID: "api1",
Service: "api",
Address: "2.3.4.5",
Port: 9000,
},
}
require.NoError(t, backend.store.EnsureRegistration(ids.Next("other"), req))
})
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
t.Cleanup(cancel)
conn, err := gogrpc.DialContext(ctx, addr.String(), gogrpc.WithInsecure())
require.NoError(t, err)
t.Cleanup(logError(t, conn.Close))
chEvents := make(chan eventOrError, 0)
var snapshotEvents []*pbsubscribe.Event
runStep(t, "setup a client and subscribe to a topic", func(t *testing.T) {
streamClient := pbsubscribe.NewStateChangeSubscriptionClient(conn)
streamHandle, err := streamClient.Subscribe(ctx, &pbsubscribe.SubscribeRequest{
Topic: pbsubscribe.Topic_ServiceHealth,
Key: "redis",
Namespace: pbcommon.DefaultEnterpriseMeta.Namespace,
})
require.NoError(t, err)
go recvEvents(chEvents, streamHandle)
for i := 0; i < 3; i++ {
snapshotEvents = append(snapshotEvents, getEvent(t, chEvents))
}
})
runStep(t, "receive the initial snapshot of events", func(t *testing.T) {
expected := []*pbsubscribe.Event{
{
Index: ids.For("reg3"),
Payload: &pbsubscribe.Event_ServiceHealth{
ServiceHealth: &pbsubscribe.ServiceHealthUpdate{
Op: pbsubscribe.CatalogOp_Register,
CheckServiceNode: &pbservice.CheckServiceNode{
Node: &pbservice.Node{
Node: "node1",
Partition: structs.NodeEnterpriseMetaInDefaultPartition().PartitionOrEmpty(),
Datacenter: "dc1",
Address: "3.4.5.6",
RaftIndex: raftIndex(ids, "reg2", "reg2"),
},
Service: &pbservice.NodeService{
ID: "redis1",
Service: "redis",
Address: "3.4.5.6",
Port: 8080,
Weights: &pbservice.Weights{Passing: 1, Warning: 1},
// Sad empty state
Proxy: pbservice.ConnectProxyConfig{
MeshGateway: pbservice.MeshGatewayConfig{},
Expose: pbservice.ExposeConfig{},
},
RaftIndex: raftIndex(ids, "reg2", "reg2"),
EnterpriseMeta: pbcommon.DefaultEnterpriseMeta,
},
},
},
},
},
{
Index: ids.For("reg3"),
Payload: &pbsubscribe.Event_ServiceHealth{
ServiceHealth: &pbsubscribe.ServiceHealthUpdate{
Op: pbsubscribe.CatalogOp_Register,
CheckServiceNode: &pbservice.CheckServiceNode{
Node: &pbservice.Node{
Node: "node2",
Partition: structs.NodeEnterpriseMetaInDefaultPartition().PartitionOrEmpty(),
Datacenter: "dc1",
Address: "1.2.3.4",
RaftIndex: raftIndex(ids, "reg3", "reg3"),
},
Service: &pbservice.NodeService{
ID: "redis1",
Service: "redis",
Address: "1.1.1.1",
Port: 8080,
Weights: &pbservice.Weights{Passing: 1, Warning: 1},
// Sad empty state
Proxy: pbservice.ConnectProxyConfig{
MeshGateway: pbservice.MeshGatewayConfig{},
Expose: pbservice.ExposeConfig{},
},
RaftIndex: raftIndex(ids, "reg3", "reg3"),
EnterpriseMeta: pbcommon.DefaultEnterpriseMeta,
},
},
},
},
},
{
Index: ids.For("reg3"),
Payload: &pbsubscribe.Event_EndOfSnapshot{EndOfSnapshot: true},
},
}
assertDeepEqual(t, expected, snapshotEvents)
})
runStep(t, "update the registration by adding a check", func(t *testing.T) {
req.Check = &structs.HealthCheck{
Node: "node2",
CheckID: "check1",
ServiceID: "redis1",
ServiceName: "redis",
Name: "check 1",
}
require.NoError(t, backend.store.EnsureRegistration(ids.Next("update"), req))
event := getEvent(t, chEvents)
expectedEvent := &pbsubscribe.Event{
Index: ids.Last(),
Payload: &pbsubscribe.Event_ServiceHealth{
ServiceHealth: &pbsubscribe.ServiceHealthUpdate{
Op: pbsubscribe.CatalogOp_Register,
CheckServiceNode: &pbservice.CheckServiceNode{
Node: &pbservice.Node{
Node: "node2",
Partition: structs.NodeEnterpriseMetaInDefaultPartition().PartitionOrEmpty(),
Datacenter: "dc1",
Address: "1.2.3.4",
RaftIndex: raftIndex(ids, "reg3", "reg3"),
},
Service: &pbservice.NodeService{
ID: "redis1",
Service: "redis",
Address: "1.1.1.1",
Port: 8080,
Weights: &pbservice.Weights{Passing: 1, Warning: 1},
// Sad empty state
Proxy: pbservice.ConnectProxyConfig{
MeshGateway: pbservice.MeshGatewayConfig{},
Expose: pbservice.ExposeConfig{},
},
RaftIndex: raftIndex(ids, "reg3", "reg3"),
EnterpriseMeta: pbcommon.DefaultEnterpriseMeta,
},
Checks: []*pbservice.HealthCheck{
{
CheckID: "check1",
Name: "check 1",
Node: "node2",
Status: "critical",
ServiceID: "redis1",
ServiceName: "redis",
RaftIndex: raftIndex(ids, "update", "update"),
EnterpriseMeta: pbcommon.DefaultEnterpriseMeta,
},
},
},
},
},
}
assertDeepEqual(t, expectedEvent, event)
})
}
type eventOrError struct {
event *pbsubscribe.Event
err error
}
// recvEvents from handle and sends them to the provided channel.
func recvEvents(ch chan eventOrError, handle pbsubscribe.StateChangeSubscription_SubscribeClient) {
defer close(ch)
for {
event, err := handle.Recv()
switch {
case errors.Is(err, io.EOF):
return
case errors.Is(err, context.Canceled), errors.Is(err, context.DeadlineExceeded):
return
case err != nil:
ch <- eventOrError{err: err}
return
default:
ch <- eventOrError{event: event}
}
}
}
func getEvent(t *testing.T, ch chan eventOrError) *pbsubscribe.Event {
t.Helper()
select {
case item := <-ch:
require.NoError(t, item.err)
return item.event
case <-time.After(2 * time.Second):
t.Fatalf("timeout waiting on event from server")
}
return nil
}
func assertDeepEqual(t *testing.T, x, y interface{}, opts ...cmp.Option) {
t.Helper()
if diff := cmp.Diff(x, y, opts...); diff != "" {
t.Fatalf("assertion failed: values are not equal\n--- expected\n+++ actual\n%v", diff)
}
}
type testBackend struct {
store *state.Store
authorizer func(token string, entMeta *structs.EnterpriseMeta) acl.Authorizer
forwardConn *gogrpc.ClientConn
}
func (b testBackend) ResolveTokenAndDefaultMeta(
token string,
entMeta *structs.EnterpriseMeta,
_ *acl.AuthorizerContext,
) (acl.Authorizer, error) {
return b.authorizer(token, entMeta), nil
}
func (b testBackend) Forward(_ structs.RPCInfo, fn func(*gogrpc.ClientConn) error) (handled bool, err error) {
if b.forwardConn != nil {
return true, fn(b.forwardConn)
}
return false, nil
}
func (b testBackend) Subscribe(req *stream.SubscribeRequest) (*stream.Subscription, error) {
return b.store.EventPublisher().Subscribe(req)
}
func newTestBackend() (*testBackend, error) {
gc, err := state.NewTombstoneGC(time.Second, time.Millisecond)
if err != nil {
return nil, err
}
store := state.NewStateStoreWithEventPublisher(gc)
allowAll := func(string, *structs.EnterpriseMeta) acl.Authorizer {
return acl.AllowAll()
}
return &testBackend{store: store, authorizer: allowAll}, nil
}
var _ Backend = (*testBackend)(nil)
func runTestServer(t *testing.T, server *Server) net.Addr {
addr := &net.IPAddr{IP: net.ParseIP("127.0.0.1")}
var grpcServer *gogrpc.Server
handler := grpc.NewHandler(hclog.New(nil), addr, func(srv *gogrpc.Server) {
grpcServer = srv
pbsubscribe.RegisterStateChangeSubscriptionServer(srv, server)
})
lis, err := net.Listen("tcp", "127.0.0.1:0")
require.NoError(t, err)
t.Cleanup(logError(t, lis.Close))
go grpcServer.Serve(lis)
g := new(errgroup.Group)
g.Go(func() error {
return grpcServer.Serve(lis)
})
t.Cleanup(func() {
if err := handler.Shutdown(); err != nil {
t.Logf("grpc server shutdown: %v", err)
}
if err := g.Wait(); err != nil {
t.Logf("grpc server error: %v", err)
}
})
return lis.Addr()
}
type counter struct {
value uint64
labels map[string]uint64
}
func (c *counter) Next(label string) uint64 {
c.value++
c.labels[label] = c.value
return c.value
}
func (c *counter) For(label string) uint64 {
return c.labels[label]
}
func (c *counter) Last() uint64 {
return c.value
}
func newCounter() *counter {
return &counter{labels: make(map[string]uint64)}
}
func raftIndex(ids *counter, created, modified string) pbcommon.RaftIndex {
return pbcommon.RaftIndex{
CreateIndex: ids.For(created),
ModifyIndex: ids.For(modified),
}
}
func TestServer_Subscribe_IntegrationWithBackend_ForwardToDC(t *testing.T) {
backendLocal, err := newTestBackend()
require.NoError(t, err)
addrLocal := runTestServer(t, NewServer(backendLocal, hclog.New(nil)))
backendRemoteDC, err := newTestBackend()
require.NoError(t, err)
srvRemoteDC := NewServer(backendRemoteDC, hclog.New(nil))
addrRemoteDC := runTestServer(t, srvRemoteDC)
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
t.Cleanup(cancel)
connRemoteDC, err := gogrpc.DialContext(ctx, addrRemoteDC.String(), gogrpc.WithInsecure())
require.NoError(t, err)
t.Cleanup(logError(t, connRemoteDC.Close))
backendLocal.forwardConn = connRemoteDC
ids := newCounter()
var req *structs.RegisterRequest
runStep(t, "register three services", func(t *testing.T) {
req = &structs.RegisterRequest{
Node: "other",
Address: "2.3.4.5",
Datacenter: "dc2",
Service: &structs.NodeService{
ID: "api1",
Service: "api",
Address: "2.3.4.5",
Port: 9000,
},
}
require.NoError(t, backendRemoteDC.store.EnsureRegistration(ids.Next("reg1"), req))
req = &structs.RegisterRequest{
Node: "node1",
Address: "3.4.5.6",
Datacenter: "dc2",
Service: &structs.NodeService{
ID: "redis1",
Service: "redis",
Address: "3.4.5.6",
Port: 8080,
},
}
require.NoError(t, backendRemoteDC.store.EnsureRegistration(ids.Next("reg2"), req))
req = &structs.RegisterRequest{
Node: "node2",
Address: "1.2.3.4",
Datacenter: "dc2",
Service: &structs.NodeService{
ID: "redis1",
Service: "redis",
Address: "1.1.1.1",
Port: 8080,
},
}
require.NoError(t, backendRemoteDC.store.EnsureRegistration(ids.Next("reg3"), req))
})
connLocal, err := gogrpc.DialContext(ctx, addrLocal.String(), gogrpc.WithInsecure())
require.NoError(t, err)
t.Cleanup(logError(t, connLocal.Close))
chEvents := make(chan eventOrError, 0)
var snapshotEvents []*pbsubscribe.Event
runStep(t, "setup a client and subscribe to a topic", func(t *testing.T) {
streamClient := pbsubscribe.NewStateChangeSubscriptionClient(connLocal)
streamHandle, err := streamClient.Subscribe(ctx, &pbsubscribe.SubscribeRequest{
Topic: pbsubscribe.Topic_ServiceHealth,
Key: "redis",
Datacenter: "dc2",
Namespace: pbcommon.DefaultEnterpriseMeta.Namespace,
})
require.NoError(t, err)
go recvEvents(chEvents, streamHandle)
for i := 0; i < 3; i++ {
snapshotEvents = append(snapshotEvents, getEvent(t, chEvents))
}
})
runStep(t, "receive the initial snapshot of events", func(t *testing.T) {
expected := []*pbsubscribe.Event{
{
Index: ids.Last(),
Payload: &pbsubscribe.Event_ServiceHealth{
ServiceHealth: &pbsubscribe.ServiceHealthUpdate{
Op: pbsubscribe.CatalogOp_Register,
CheckServiceNode: &pbservice.CheckServiceNode{
Node: &pbservice.Node{
Node: "node1",
Partition: structs.NodeEnterpriseMetaInDefaultPartition().PartitionOrEmpty(),
Datacenter: "dc2",
Address: "3.4.5.6",
RaftIndex: raftIndex(ids, "reg2", "reg2"),
},
Service: &pbservice.NodeService{
ID: "redis1",
Service: "redis",
Address: "3.4.5.6",
Port: 8080,
Weights: &pbservice.Weights{Passing: 1, Warning: 1},
// Sad empty state
Proxy: pbservice.ConnectProxyConfig{
MeshGateway: pbservice.MeshGatewayConfig{},
Expose: pbservice.ExposeConfig{},
},
EnterpriseMeta: pbcommon.DefaultEnterpriseMeta,
RaftIndex: raftIndex(ids, "reg2", "reg2"),
},
},
},
},
},
{
Index: ids.Last(),
Payload: &pbsubscribe.Event_ServiceHealth{
ServiceHealth: &pbsubscribe.ServiceHealthUpdate{
Op: pbsubscribe.CatalogOp_Register,
CheckServiceNode: &pbservice.CheckServiceNode{
Node: &pbservice.Node{
Node: "node2",
Partition: structs.NodeEnterpriseMetaInDefaultPartition().PartitionOrEmpty(),
Datacenter: "dc2",
Address: "1.2.3.4",
RaftIndex: raftIndex(ids, "reg3", "reg3"),
},
Service: &pbservice.NodeService{
ID: "redis1",
Service: "redis",
Address: "1.1.1.1",
Port: 8080,
Weights: &pbservice.Weights{Passing: 1, Warning: 1},
// Sad empty state
Proxy: pbservice.ConnectProxyConfig{
MeshGateway: pbservice.MeshGatewayConfig{},
Expose: pbservice.ExposeConfig{},
},
EnterpriseMeta: pbcommon.DefaultEnterpriseMeta,
RaftIndex: raftIndex(ids, "reg3", "reg3"),
},
},
},
},
},
{
Index: ids.Last(),
Payload: &pbsubscribe.Event_EndOfSnapshot{EndOfSnapshot: true},
},
}
assertDeepEqual(t, expected, snapshotEvents)
})
runStep(t, "update the registration by adding a check", func(t *testing.T) {
req.Check = &structs.HealthCheck{
Node: "node2",
CheckID: types.CheckID("check1"),
ServiceID: "redis1",
ServiceName: "redis",
Name: "check 1",
}
require.NoError(t, backendRemoteDC.store.EnsureRegistration(ids.Next("update"), req))
event := getEvent(t, chEvents)
expectedEvent := &pbsubscribe.Event{
Index: ids.Last(),
Payload: &pbsubscribe.Event_ServiceHealth{
ServiceHealth: &pbsubscribe.ServiceHealthUpdate{
Op: pbsubscribe.CatalogOp_Register,
CheckServiceNode: &pbservice.CheckServiceNode{
Node: &pbservice.Node{
Node: "node2",
Partition: structs.NodeEnterpriseMetaInDefaultPartition().PartitionOrEmpty(),
Datacenter: "dc2",
Address: "1.2.3.4",
RaftIndex: raftIndex(ids, "reg3", "reg3"),
},
Service: &pbservice.NodeService{
ID: "redis1",
Service: "redis",
Address: "1.1.1.1",
Port: 8080,
RaftIndex: raftIndex(ids, "reg3", "reg3"),
Weights: &pbservice.Weights{Passing: 1, Warning: 1},
// Sad empty state
Proxy: pbservice.ConnectProxyConfig{
MeshGateway: pbservice.MeshGatewayConfig{},
Expose: pbservice.ExposeConfig{},
},
EnterpriseMeta: pbcommon.DefaultEnterpriseMeta,
},
Checks: []*pbservice.HealthCheck{
{
CheckID: "check1",
Name: "check 1",
Node: "node2",
Status: "critical",
ServiceID: "redis1",
ServiceName: "redis",
RaftIndex: raftIndex(ids, "update", "update"),
EnterpriseMeta: pbcommon.DefaultEnterpriseMeta,
},
},
},
},
},
}
assertDeepEqual(t, expectedEvent, event)
})
}
func TestServer_Subscribe_IntegrationWithBackend_FilterEventsByACLToken(t *testing.T) {
if testing.Short() {
t.Skip("too slow for testing.Short")
}
if testing.Short() {
t.Skip("too slow for -short run")
}
backend, err := newTestBackend()
require.NoError(t, err)
addr := runTestServer(t, NewServer(backend, hclog.New(nil)))
token := "this-token-is-good"
runStep(t, "create an ACL policy", func(t *testing.T) {
rules := `
service "foo" {
policy = "write"
}
node "node1" {
policy = "write"
}
`
cfg := &acl.Config{WildcardName: structs.WildcardSpecifier}
authorizer, err := acl.NewAuthorizerFromRules(rules, acl.SyntaxCurrent, cfg, nil)
require.NoError(t, err)
authorizer = acl.NewChainedAuthorizer([]acl.Authorizer{authorizer, acl.DenyAll()})
require.Equal(t, acl.Deny, authorizer.NodeRead("denied", nil))
// TODO: is there any easy way to do this with the acl package?
backend.authorizer = func(tok string, _ *structs.EnterpriseMeta) acl.Authorizer {
if tok == token {
return authorizer
}
return acl.DenyAll()
}
})
ids := newCounter()
var req *structs.RegisterRequest
runStep(t, "register services", func(t *testing.T) {
req = &structs.RegisterRequest{
Datacenter: "dc1",
Node: "node1",
Address: "127.0.0.1",
Service: &structs.NodeService{
ID: "foo",
Service: "foo",
},
Check: &structs.HealthCheck{
CheckID: "service:foo",
Name: "service:foo",
Node: "node1",
ServiceID: "foo",
Status: api.HealthPassing,
},
}
require.NoError(t, backend.store.EnsureRegistration(ids.Next("reg1"), req))
// Register a service which should be denied
req = &structs.RegisterRequest{
Datacenter: "dc1",
Node: "node1",
Address: "127.0.0.1",
Service: &structs.NodeService{
ID: "bar",
Service: "bar",
},
Check: &structs.HealthCheck{
CheckID: "service:bar",
Name: "service:bar",
Node: "node1",
ServiceID: "bar",
},
}
require.NoError(t, backend.store.EnsureRegistration(ids.Next("reg2"), req))
req = &structs.RegisterRequest{
Datacenter: "dc1",
Node: "denied",
Address: "127.0.0.1",
Service: &structs.NodeService{
ID: "foo",
Service: "foo",
},
}
require.NoError(t, backend.store.EnsureRegistration(ids.Next("reg3"), req))
})
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
t.Cleanup(cancel)
conn, err := gogrpc.DialContext(ctx, addr.String(), gogrpc.WithInsecure())
require.NoError(t, err)
t.Cleanup(logError(t, conn.Close))
streamClient := pbsubscribe.NewStateChangeSubscriptionClient(conn)
chEvents := make(chan eventOrError, 0)
runStep(t, "setup a client, subscribe to a topic, and receive a snapshot", func(t *testing.T) {
streamHandle, err := streamClient.Subscribe(ctx, &pbsubscribe.SubscribeRequest{
Topic: pbsubscribe.Topic_ServiceHealth,
Key: "foo",
Token: token,
Namespace: pbcommon.DefaultEnterpriseMeta.Namespace,
})
require.NoError(t, err)
go recvEvents(chEvents, streamHandle)
event := getEvent(t, chEvents)
require.Equal(t, "foo", event.GetServiceHealth().CheckServiceNode.Service.Service)
require.Equal(t, "node1", event.GetServiceHealth().CheckServiceNode.Node.Node)
require.True(t, getEvent(t, chEvents).GetEndOfSnapshot())
})
runStep(t, "update the service to receive an event", func(t *testing.T) {
req = &structs.RegisterRequest{
Datacenter: "dc1",
Node: "node1",
Address: "127.0.0.1",
Service: &structs.NodeService{
ID: "foo",
Service: "foo",
Port: 1234,
},
Check: &structs.HealthCheck{
CheckID: "service:foo",
Name: "service:foo",
ServiceID: "foo",
Status: api.HealthPassing,
Node: "node1",
},
WriteRequest: structs.WriteRequest{Token: "root"},
}
require.NoError(t, backend.store.EnsureRegistration(ids.Next("reg4"), req))
event := getEvent(t, chEvents)
service := event.GetServiceHealth().CheckServiceNode.Service
require.Equal(t, "foo", service.Service)
require.Equal(t, int32(1234), service.Port)
})
runStep(t, "updates to the service on the denied node, should not send an event", func(t *testing.T) {
req = &structs.RegisterRequest{
Datacenter: "dc1",
Node: "denied",
Address: "127.0.0.1",
Service: &structs.NodeService{
ID: "foo",
Service: "foo",
Port: 2345,
},
Check: &structs.HealthCheck{
CheckID: "service:foo",
Name: "service:foo",
ServiceID: "foo",
Status: api.HealthPassing,
Node: "denied",
},
WriteRequest: structs.WriteRequest{Token: "root"},
}
require.NoError(t, backend.store.EnsureRegistration(ids.Next("reg5"), req))
assertNoEvents(t, chEvents)
})
runStep(t, "subscribe to a topic where events are not visible", func(t *testing.T) {
streamHandle, err := streamClient.Subscribe(ctx, &pbsubscribe.SubscribeRequest{
Topic: pbsubscribe.Topic_ServiceHealth,
Key: "bar",
Token: token,
})
require.NoError(t, err)
chEvents := make(chan eventOrError, 0)
go recvEvents(chEvents, streamHandle)
require.True(t, getEvent(t, chEvents).GetEndOfSnapshot())
// Update the service and make sure we don't get a new event.
req := &structs.RegisterRequest{
Datacenter: "dc1",
Node: "node1",
Address: "127.0.0.1",
Service: &structs.NodeService{
ID: "bar",
Service: "bar",
Port: 2345,
},
Check: &structs.HealthCheck{
CheckID: "service:bar",
Name: "service:bar",
ServiceID: "bar",
Node: "node1",
},
WriteRequest: structs.WriteRequest{Token: "root"},
}
require.NoError(t, backend.store.EnsureRegistration(ids.Next("reg6"), req))
assertNoEvents(t, chEvents)
})
}
func TestServer_Subscribe_IntegrationWithBackend_ACLUpdate(t *testing.T) {
backend, err := newTestBackend()
require.NoError(t, err)
addr := runTestServer(t, NewServer(backend, hclog.New(nil)))
token := "this-token-is-good"
runStep(t, "create an ACL policy", func(t *testing.T) {
rules := `
service "foo" {
policy = "write"
}
node "node1" {
policy = "write"
}
`
authorizer, err := acl.NewAuthorizerFromRules(rules, acl.SyntaxCurrent, &acl.Config{WildcardName: structs.WildcardSpecifier}, nil)
require.NoError(t, err)
authorizer = acl.NewChainedAuthorizer([]acl.Authorizer{authorizer, acl.DenyAll()})
require.Equal(t, acl.Deny, authorizer.NodeRead("denied", nil))
// TODO: is there any easy way to do this with the acl package?
backend.authorizer = func(tok string, _ *structs.EnterpriseMeta) acl.Authorizer {
if tok == token {
return authorizer
}
return acl.DenyAll()
}
})
ids := newCounter()
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
t.Cleanup(cancel)
conn, err := gogrpc.DialContext(ctx, addr.String(), gogrpc.WithInsecure())
require.NoError(t, err)
t.Cleanup(logError(t, conn.Close))
chEvents := make(chan eventOrError, 0)
runStep(t, "setup a client and subscribe to a topic", func(t *testing.T) {
streamClient := pbsubscribe.NewStateChangeSubscriptionClient(conn)
streamHandle, err := streamClient.Subscribe(ctx, &pbsubscribe.SubscribeRequest{
Topic: pbsubscribe.Topic_ServiceHealth,
Key: "foo",
Token: token,
})
require.NoError(t, err)
go recvEvents(chEvents, streamHandle)
require.True(t, getEvent(t, chEvents).GetEndOfSnapshot())
})
runStep(t, "updates to the token should close the stream", func(t *testing.T) {
tokenID, err := uuid.GenerateUUID()
require.NoError(t, err)
aclToken := &structs.ACLToken{
AccessorID: tokenID,
SecretID: token,
Rules: "",
}
require.NoError(t, backend.store.ACLTokenSet(ids.Next("update"), aclToken))
select {
case item := <-chEvents:
require.Error(t, item.err, "got event instead of an error: %v", item.event)
s, _ := status.FromError(item.err)
require.Equal(t, codes.Aborted, s.Code())
case <-time.After(2 * time.Second):
t.Fatalf("timeout waiting for aborted error")
}
})
}
func assertNoEvents(t *testing.T, chEvents chan eventOrError) {
t.Helper()
select {
case event := <-chEvents:
t.Fatalf("should not have received event: %v", event)
case <-time.After(100 * time.Millisecond):
}
}
func logError(t *testing.T, f func() error) func() {
return func() {
if err := f(); err != nil {
t.Logf(err.Error())
}
}
}
func runStep(t *testing.T, name string, fn func(t *testing.T)) {
t.Helper()
if !t.Run(name, fn) {
t.FailNow()
}
}
func TestNewEventFromSteamEvent(t *testing.T) {
type testCase struct {
name string
event stream.Event
expected pbsubscribe.Event
}
fn := func(t *testing.T, tc testCase) {
expected := tc.expected
actual := newEventFromStreamEvent(tc.event)
assertDeepEqual(t, &expected, actual, cmpopts.EquateEmpty())
}
var testCases = []testCase{
{
name: "end of snapshot",
event: newEventFromSubscription(t, 0),
expected: pbsubscribe.Event{
Index: 1,
Payload: &pbsubscribe.Event_EndOfSnapshot{EndOfSnapshot: true},
},
},
{
name: "new snapshot to follow",
event: newEventFromSubscription(t, 22),
expected: pbsubscribe.Event{
Payload: &pbsubscribe.Event_NewSnapshotToFollow{NewSnapshotToFollow: true},
},
},
{
name: "event batch",
event: stream.Event{
Index: 2002,
Payload: newPayloadEvents(
stream.Event{
Index: 2002,
Payload: state.EventPayloadCheckServiceNode{
Op: pbsubscribe.CatalogOp_Register,
Value: &structs.CheckServiceNode{
Node: &structs.Node{Node: "node1"},
Service: &structs.NodeService{Service: "web1"},
},
},
},
stream.Event{
Index: 2002,
Payload: state.EventPayloadCheckServiceNode{
Op: pbsubscribe.CatalogOp_Deregister,
Value: &structs.CheckServiceNode{
Node: &structs.Node{Node: "node2"},
Service: &structs.NodeService{Service: "web1"},
},
},
}),
},
expected: pbsubscribe.Event{
Index: 2002,
Payload: &pbsubscribe.Event_EventBatch{
EventBatch: &pbsubscribe.EventBatch{
Events: []*pbsubscribe.Event{
{
Index: 2002,
Payload: &pbsubscribe.Event_ServiceHealth{
ServiceHealth: &pbsubscribe.ServiceHealthUpdate{
Op: pbsubscribe.CatalogOp_Register,
CheckServiceNode: &pbservice.CheckServiceNode{
Node: &pbservice.Node{Node: "node1"},
Service: &pbservice.NodeService{Service: "web1"},
},
},
},
},
{
Index: 2002,
Payload: &pbsubscribe.Event_ServiceHealth{
ServiceHealth: &pbsubscribe.ServiceHealthUpdate{
Op: pbsubscribe.CatalogOp_Deregister,
CheckServiceNode: &pbservice.CheckServiceNode{
Node: &pbservice.Node{Node: "node2"},
Service: &pbservice.NodeService{Service: "web1"},
},
},
},
},
},
},
},
},
},
{
name: "event payload CheckServiceNode",
event: stream.Event{
Index: 2002,
Payload: state.EventPayloadCheckServiceNode{
Op: pbsubscribe.CatalogOp_Register,
Value: &structs.CheckServiceNode{
Node: &structs.Node{Node: "node1"},
Service: &structs.NodeService{Service: "web1"},
},
},
},
expected: pbsubscribe.Event{
Index: 2002,
Payload: &pbsubscribe.Event_ServiceHealth{
ServiceHealth: &pbsubscribe.ServiceHealthUpdate{
Op: pbsubscribe.CatalogOp_Register,
CheckServiceNode: &pbservice.CheckServiceNode{
Node: &pbservice.Node{Node: "node1"},
Service: &pbservice.NodeService{Service: "web1"},
},
},
},
},
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
fn(t, tc)
})
}
}
func newPayloadEvents(items ...stream.Event) *stream.PayloadEvents {
return &stream.PayloadEvents{Items: items}
}
// newEventFromSubscription is used to return framing events. EndOfSnapshot and
// NewSnapshotToFollow are not exported, but we can get them from a subscription.
func newEventFromSubscription(t *testing.T, index uint64) stream.Event {
t.Helper()
handlers := map[stream.Topic]stream.SnapshotFunc{
pbsubscribe.Topic_ServiceHealthConnect: func(stream.SubscribeRequest, stream.SnapshotAppender) (index uint64, err error) {
return 1, nil
},
}
ep := stream.NewEventPublisher(handlers, 0)
req := &stream.SubscribeRequest{Topic: pbsubscribe.Topic_ServiceHealthConnect, Index: index}
sub, err := ep.Subscribe(req)
require.NoError(t, err)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
event, err := sub.Next(ctx)
require.NoError(t, err)
return event
}
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