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Fix mesh gateway configuration with proxy-defaults (#15186) 

* Fix mesh gateway proxy-defaults not affecting upstreams.

* Clarify distinction with upstream settings

Top-level mesh gateway mode in proxy-defaults and service-defaults gets
merged into NodeService.Proxy.MeshGateway, and only gets merged with
the mode attached to an an upstream in proxycfg/xds.

* Fix mgw mode usage for peered upstreams

There were a couple issues with how mgw mode was being handled for
peered upstreams.

For starters, mesh gateway mode from proxy-defaults
and the top-level of service-defaults gets stored in
NodeService.Proxy.MeshGateway, but the upstream watch for peered data
was only considering the mesh gateway config attached in
NodeService.Proxy.Upstreams[i]. This means that applying a mesh gateway
mode via global proxy-defaults or service-defaults on the downstream
would not have an effect.

Separately, transparent proxy watches for peered upstreams didn't
consider mesh gateway mode at all.

This commit addresses the first issue by ensuring that we overlay the
upstream config for peered upstreams as we do for non-peered. The second
issue is addressed by re-using setupWatchesForPeeredUpstream when
handling transparent proxy updates.

Note that for transparent proxies we do not yet support mesh gateway
mode per upstream, so the NodeService.Proxy.MeshGateway mode is used.

* Fix upstream mesh gateway mode handling in xds

This commit ensures that when determining the mesh gateway mode for
peered upstreams we consider the NodeService.Proxy.MeshGateway config as
a baseline.

In absense of this change, setting a mesh gateway mode via
proxy-defaults or the top-level of service-defaults will not have an
effect for peered upstreams.

* Merge service/proxy defaults in cfg resolver

Previously the mesh gateway mode for connect proxies would be
merged at three points:

1. On servers, in ComputeResolvedServiceConfig.
2. On clients, in MergeServiceConfig.
3. On clients, in proxycfg/xds.

The first merge returns a ServiceConfigResponse where there is a
top-level MeshGateway config from proxy/service-defaults, along with
per-upstream config.

The second merge combines per-upstream config specified at the service
instance with per-upstream config specified centrally.

The third merge combines the NodeService.Proxy.MeshGateway
config containing proxy/service-defaults data with the per-upstream
mode. This third merge is easy to miss, which led to peered upstreams
not considering the mesh gateway mode from proxy-defaults.

This commit removes the third merge, and ensures that all mesh gateway
config is available at the upstream. This way proxycfg/xds do not need
to do additional overlays.

* Ensure that proxy-defaults is considered in wc

Upstream defaults become a synthetic Upstream definition under a
wildcard key "*". Now that proxycfg/xds expect Upstream definitions to
have the final MeshGateway values, this commit ensures that values from
proxy-defaults/service-defaults are the default for this synthetic
upstream.

* Add changelog.

Co-authored-by: freddygv <freddy@hashicorp.com>
This commit is contained in:
Derek Menteer 2022-11-09 10:14:29 -06:00 committed by GitHub
parent 605ab84636
commit 9e76d274ec
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
13 changed files with 404 additions and 164 deletions
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3
.changelog/15186.txt Normal file
View File

@ -0,0 +1,3 @@
```release-note:bug
connect: Fix issue where mesh-gateway settings were not properly inherited from configuration entries.
```

2
agent/configentry/merge_service_config.go
View File

@ -147,7 +147,7 @@ func MergeServiceConfig(defaults *structs.ServiceConfigResponse, service *struct
// localUpstreams stores the upstreams seen from the local registration so that we can merge in the synthetic entries.
// In transparent proxy mode ns.Proxy.Upstreams will likely be empty because users do not need to define upstreams explicitly.
// So to store upstream-specific flags from central config, we add entries to ns.Proxy.Upstream with those values.
// So to store upstream-specific flags from central config, we add entries to ns.Proxy.Upstreams with those values.
localUpstreams := make(map[structs.ServiceID]struct{})
// Merge upstream defaults into the local registration

67
agent/configentry/resolve.go
View File

@ -134,10 +134,10 @@ func ComputeResolvedServiceConfig(
// Then store upstreams inferred from service-defaults and mapify the overrides.
var (
upstreamConfigs = make(map[structs.ServiceID]*structs.UpstreamConfig)
upstreamDefaults *structs.UpstreamConfig
// usConfigs stores the opaque config map for each upstream and is keyed on the upstream's ID.
usConfigs = make(map[structs.ServiceID]map[string]interface{})
upstreamOverrides = make(map[structs.ServiceID]*structs.UpstreamConfig)
upstreamDefaults *structs.UpstreamConfig
// resolvedConfigs stores the opaque config map for each upstream and is keyed on the upstream's ID.
resolvedConfigs = make(map[structs.ServiceID]map[string]interface{})
)
if serviceConf != nil && serviceConf.UpstreamConfig != nil {
for i, override := range serviceConf.UpstreamConfig.Overrides {
@ -152,18 +152,26 @@ func ComputeResolvedServiceConfig(
continue // skip this impossible condition
}
seenUpstreams[override.ServiceID()] = struct{}{}
upstreamConfigs[override.ServiceID()] = override
upstreamOverrides[override.ServiceID()] = override
}
if serviceConf.UpstreamConfig.Defaults != nil {
upstreamDefaults = serviceConf.UpstreamConfig.Defaults
if upstreamDefaults.MeshGateway.Mode == structs.MeshGatewayModeDefault {
upstreamDefaults.MeshGateway.Mode = thisReply.MeshGateway.Mode
}
// Store the upstream defaults under a wildcard key so that they can be applied to
// upstreams that are inferred from intentions and do not have explicit upstream configuration.
cfgMap := make(map[string]interface{})
upstreamDefaults.MergeInto(cfgMap)
if !args.MeshGateway.IsZero() {
cfgMap["mesh_gateway"] = args.MeshGateway
}
wildcard := structs.NewServiceID(structs.WildcardSpecifier, args.WithWildcardNamespace())
usConfigs[wildcard] = cfgMap
resolvedConfigs[wildcard] = cfgMap
}
}
@ -190,34 +198,49 @@ func ComputeResolvedServiceConfig(
resolvedCfg["protocol"] = protocol
}
// Merge centralized defaults for all upstreams before configuration for specific upstreams
// When dialing an upstream, the goal is to flatten the mesh gateway mode in this order
// (larger number wins):
// 1. Value from the proxy-defaults
// 2. Value from top-level of service-defaults (ServiceDefaults.MeshGateway)
// 3. Value from centralized upstream defaults (ServiceDefaults.UpstreamConfig.Defaults)
// 4. Value from local proxy registration (NodeService.Proxy.MeshGateway)
// 5. Value from centralized upstream override (ServiceDefaults.UpstreamConfig.Overrides)
// 6. Value from local upstream definition (NodeService.Proxy.Upstreams[].MeshGateway)
//
// The MeshGateway value from upstream definitions in the proxy registration override
// the one from UpstreamConfig.Defaults and UpstreamConfig.Overrides because they are
// specific to the proxy instance.
//
// Step 6 is handled by the dialer's ServiceManager in MergeServiceConfig.
// Start with the merged value from proxyConf and serviceConf. (steps 1-2)
if !thisReply.MeshGateway.IsZero() {
resolvedCfg["mesh_gateway"] = thisReply.MeshGateway
}
// Merge in the upstream defaults (step 3).
if upstreamDefaults != nil {
upstreamDefaults.MergeInto(resolvedCfg)
}
// The MeshGateway value from the proxy registration overrides the one from upstream_defaults
// because it is specific to the proxy instance.
//
// The goal is to flatten the mesh gateway mode in this order:
// 0. Value from centralized upstream_defaults
// 1. Value from local proxy registration
// 2. Value from centralized upstream_config
// 3. Value from local upstream definition. This last step is done in the client's service manager.
// Merge in the top-level mode from the proxy instance (step 4).
if !args.MeshGateway.IsZero() {
// This means each upstream inherits the value from the `NodeService.Proxy.MeshGateway` field.
resolvedCfg["mesh_gateway"] = args.MeshGateway
}
if upstreamConfigs[upstream] != nil {
upstreamConfigs[upstream].MergeInto(resolvedCfg)
// Merge in Overrides for the upstream (step 5).
if upstreamOverrides[upstream] != nil {
upstreamOverrides[upstream].MergeInto(resolvedCfg)
}
if len(resolvedCfg) > 0 {
usConfigs[upstream] = resolvedCfg
resolvedConfigs[upstream] = resolvedCfg
}
}
// don't allocate the slices just to not fill them
if len(usConfigs) == 0 {
if len(resolvedConfigs) == 0 {
return &thisReply, nil
}
@ -225,14 +248,14 @@ func ComputeResolvedServiceConfig(
// For legacy upstreams we return a map that is only keyed on the string ID, since they precede namespaces
thisReply.UpstreamConfigs = make(map[string]map[string]interface{})
for us, conf := range usConfigs {
for us, conf := range resolvedConfigs {
thisReply.UpstreamConfigs[us.ID] = conf
}
} else {
thisReply.UpstreamIDConfigs = make(structs.OpaqueUpstreamConfigs, 0, len(usConfigs))
thisReply.UpstreamIDConfigs = make(structs.OpaqueUpstreamConfigs, 0, len(resolvedConfigs))
for us, conf := range usConfigs {
for us, conf := range resolvedConfigs {
thisReply.UpstreamIDConfigs = append(thisReply.UpstreamIDConfigs,
structs.OpaqueUpstreamConfig{Upstream: us, Config: conf})
}

251
agent/configentry/resolve_test.go
View File

@ -1,10 +1,12 @@
package configentry
import (
"sort"
"testing"
"github.com/stretchr/testify/require"
"github.com/hashicorp/consul/acl"
"github.com/hashicorp/consul/agent/structs"
)
@ -17,8 +19,19 @@ func Test_ComputeResolvedServiceConfig(t *testing.T) {
sid := structs.ServiceID{
ID: "sid",
EnterpriseMeta: *structs.DefaultEnterpriseMetaInDefaultPartition(),
EnterpriseMeta: *acl.DefaultEnterpriseMeta(),
}
uid := structs.ServiceID{
ID: "upstream1",
EnterpriseMeta: *acl.DefaultEnterpriseMeta(),
}
uids := []structs.ServiceID{uid}
wildcard := structs.NewServiceID(structs.WildcardSpecifier, acl.WildcardEnterpriseMeta())
localMeshGW := structs.MeshGatewayConfig{Mode: structs.MeshGatewayModeLocal}
remoteMeshGW := structs.MeshGatewayConfig{Mode: structs.MeshGatewayModeRemote}
noneMeshGW := structs.MeshGatewayConfig{Mode: structs.MeshGatewayModeNone}
tests := []struct {
name string
args args
@ -88,12 +101,248 @@ func Test_ComputeResolvedServiceConfig(t *testing.T) {
},
},
},
{
name: "proxy upstream mesh-gateway inherits proxy-defaults",
args: args{
scReq: &structs.ServiceConfigRequest{
Name: "sid",
UpstreamIDs: uids,
},
upstreamIDs: uids,
entries: &ResolvedServiceConfigSet{
ProxyDefaults: map[string]*structs.ProxyConfigEntry{
acl.DefaultEnterpriseMeta().PartitionOrDefault(): {
MeshGateway: remoteMeshGW, // applied 1st
},
},
},
},
want: &structs.ServiceConfigResponse{
MeshGateway: remoteMeshGW,
UpstreamIDConfigs: structs.OpaqueUpstreamConfigs{
{
Upstream: uid,
Config: map[string]interface{}{
"mesh_gateway": remoteMeshGW,
},
},
},
},
},
{
name: "proxy upstream mesh-gateway inherits service-defaults",
args: args{
scReq: &structs.ServiceConfigRequest{
Name: "sid",
UpstreamIDs: uids,
},
upstreamIDs: uids,
entries: &ResolvedServiceConfigSet{
ProxyDefaults: map[string]*structs.ProxyConfigEntry{
acl.DefaultEnterpriseMeta().PartitionOrDefault(): {
MeshGateway: localMeshGW, // applied 1st
},
},
ServiceDefaults: map[structs.ServiceID]*structs.ServiceConfigEntry{
sid: {
MeshGateway: noneMeshGW, // applied 2nd
},
},
},
},
want: &structs.ServiceConfigResponse{
MeshGateway: noneMeshGW, // service-defaults has a higher precedence.
UpstreamIDConfigs: structs.OpaqueUpstreamConfigs{
{
Upstream: uid,
Config: map[string]interface{}{
"mesh_gateway": noneMeshGW,
},
},
},
},
},
{
name: "proxy wildcard upstream mesh-gateway inherits proxy-defaults",
args: args{
scReq: &structs.ServiceConfigRequest{
Name: "sid",
Mode: structs.ProxyModeTransparent,
},
entries: &ResolvedServiceConfigSet{
ProxyDefaults: map[string]*structs.ProxyConfigEntry{
acl.DefaultEnterpriseMeta().PartitionOrDefault(): {
MeshGateway: localMeshGW,
},
},
ServiceDefaults: map[structs.ServiceID]*structs.ServiceConfigEntry{
sid: {
UpstreamConfig: &structs.UpstreamConfiguration{
Defaults: &structs.UpstreamConfig{
Protocol: "http",
},
},
},
},
},
},
want: &structs.ServiceConfigResponse{
MeshGateway: localMeshGW,
UpstreamIDConfigs: structs.OpaqueUpstreamConfigs{
{
Upstream: wildcard,
Config: map[string]interface{}{
"mesh_gateway": localMeshGW, // From proxy-defaults
"protocol": "http",
},
},
},
},
},
{
name: "proxy upstream mesh-gateway inherits upstream defaults",
args: args{
scReq: &structs.ServiceConfigRequest{
Name: "sid",
UpstreamIDs: uids,
},
upstreamIDs: uids,
entries: &ResolvedServiceConfigSet{
ProxyDefaults: map[string]*structs.ProxyConfigEntry{
acl.DefaultEnterpriseMeta().PartitionOrDefault(): {
MeshGateway: localMeshGW,
},
},
ServiceDefaults: map[structs.ServiceID]*structs.ServiceConfigEntry{
sid: {
MeshGateway: noneMeshGW,
UpstreamConfig: &structs.UpstreamConfiguration{
Defaults: &structs.UpstreamConfig{
MeshGateway: remoteMeshGW,
},
},
},
},
},
},
want: &structs.ServiceConfigResponse{
MeshGateway: noneMeshGW, // Merged from proxy-defaults + service-defaults
UpstreamIDConfigs: structs.OpaqueUpstreamConfigs{
{
Upstream: wildcard,
Config: map[string]interface{}{
// Wildcard stores the values from UpstreamConfig.Defaults directly
"mesh_gateway": remoteMeshGW,
},
},
{
Upstream: uid,
Config: map[string]interface{}{
// Upstream-specific config comes from UpstreamConfig.Defaults
"mesh_gateway": remoteMeshGW,
},
},
},
},
},
{
name: "proxy upstream mesh-gateway inherits value from node-service",
args: args{
scReq: &structs.ServiceConfigRequest{
Name: "sid",
UpstreamIDs: uids,
// MeshGateway from NodeService is received in the request
MeshGateway: remoteMeshGW,
},
upstreamIDs: uids,
entries: &ResolvedServiceConfigSet{
ServiceDefaults: map[structs.ServiceID]*structs.ServiceConfigEntry{
sid: {
UpstreamConfig: &structs.UpstreamConfiguration{
Defaults: &structs.UpstreamConfig{
MeshGateway: noneMeshGW,
},
},
},
},
},
},
want: &structs.ServiceConfigResponse{
UpstreamIDConfigs: structs.OpaqueUpstreamConfigs{
{
Upstream: wildcard,
Config: map[string]interface{}{
// NodeService.Proxy.MeshGateway has a higher precedence than centralized
// UpstreamConfig.Defaults, since it's specific to a service instance.
"mesh_gateway": remoteMeshGW,
},
},
{
Upstream: uid,
Config: map[string]interface{}{
"mesh_gateway": remoteMeshGW,
},
},
},
},
},
{
name: "proxy upstream mesh-gateway inherits value from service-defaults override",
args: args{
scReq: &structs.ServiceConfigRequest{
Name: "sid",
UpstreamIDs: uids,
MeshGateway: localMeshGW, // applied 2nd
},
upstreamIDs: uids,
entries: &ResolvedServiceConfigSet{
ServiceDefaults: map[structs.ServiceID]*structs.ServiceConfigEntry{
sid: {
UpstreamConfig: &structs.UpstreamConfiguration{
Defaults: &structs.UpstreamConfig{
MeshGateway: localMeshGW, // applied 1st
},
Overrides: []*structs.UpstreamConfig{
{
Name: uid.ID,
MeshGateway: remoteMeshGW, // applied 3rd
},
},
},
},
},
},
},
want: &structs.ServiceConfigResponse{
UpstreamIDConfigs: structs.OpaqueUpstreamConfigs{
{
Upstream: wildcard,
Config: map[string]interface{}{
// Wildcard stores the values from UpstreamConfig.Defaults directly
"mesh_gateway": localMeshGW,
},
},
{
Upstream: uid,
Config: map[string]interface{}{
// UpstreamConfig.Overrides has a higher precedence than UpstreamConfig.Defaults
"mesh_gateway": remoteMeshGW,
},
},
},
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := ComputeResolvedServiceConfig(tt.args.scReq, tt.args.upstreamIDs,
false, tt.args.entries, nil)
require.NoError(t, err)
// This is needed because map iteration is random and determines the order of some outputs.
sort.Slice(got.UpstreamIDConfigs, func(i, j int) bool {
return got.UpstreamIDConfigs[i].Upstream.ID < got.UpstreamIDConfigs[j].Upstream.ID
})
require.Equal(t, tt.want, got)
})
}

4
agent/consul/config_endpoint_test.go
View File

@ -1361,7 +1361,7 @@ func TestConfigEntry_ResolveServiceConfig_Upstreams(t *testing.T) {
Upstream: wildcard,
Config: map[string]interface{}{
"mesh_gateway": map[string]interface{}{
"Mode": "remote",
"Mode": "none",
},
},
},
@ -1438,7 +1438,7 @@ func TestConfigEntry_ResolveServiceConfig_Upstreams(t *testing.T) {
"EnforcingConsecutive5xx": int64(60),
},
"mesh_gateway": map[string]interface{}{
"Mode": "remote",
"Mode": "none",
},
"protocol": "http",
},

60
agent/proxycfg/connect_proxy.go
View File

@ -197,9 +197,9 @@ func (s *handlerConnectProxy) initialize(ctx context.Context) (ConfigSnapshot, e
case "":
if u.DestinationPeer != "" {
err := s.setupWatchesForPeeredUpstream(ctx, snap.ConnectProxy, u, dc)
err := s.setupWatchesForPeeredUpstream(ctx, snap.ConnectProxy, NewUpstreamID(&u), u.MeshGateway.Mode, dc)
if err != nil {
return snap, err
return snap, fmt.Errorf("failed to setup watches for peered upstream %q: %w", uid.String(), err)
}
continue
}
@ -211,7 +211,7 @@ func (s *handlerConnectProxy) initialize(ctx context.Context) (ConfigSnapshot, e
EvaluateInDatacenter: dc,
EvaluateInNamespace: ns,
EvaluateInPartition: partition,
OverrideMeshGateway: s.proxyCfg.MeshGateway.OverlayWith(u.MeshGateway),
OverrideMeshGateway: u.MeshGateway,
OverrideProtocol: cfg.Protocol,
OverrideConnectTimeout: cfg.ConnectTimeout(),
}, "discovery-chain:"+uid.String(), s.ch)
@ -230,31 +230,30 @@ func (s *handlerConnectProxy) initialize(ctx context.Context) (ConfigSnapshot, e
func (s *handlerConnectProxy) setupWatchesForPeeredUpstream(
ctx context.Context,
snapConnectProxy configSnapshotConnectProxy,
u structs.Upstream,
uid UpstreamID,
mgwMode structs.MeshGatewayMode,
dc string,
) error {
uid := NewUpstreamID(&u)
s.logger.Trace("initializing watch of peered upstream", "upstream", uid)
// NOTE: An upstream that points to a peer by definition will
// only ever watch a single catalog query, so a map key of just
// "UID" is sufficient to cover the peer data watches here.
snapConnectProxy.PeerUpstreamEndpoints.InitWatch(uid, nil)
err := s.dataSources.Health.Notify(ctx, &structs.ServiceSpecificRequest{
PeerName: uid.Peer,
Datacenter: dc,
QueryOptions: structs.QueryOptions{
Token: s.token,
},
ServiceName: u.DestinationName,
ServiceName: uid.Name,
Connect: true,
Source: *s.source,
EnterpriseMeta: uid.EnterpriseMeta,
}, upstreamPeerWatchIDPrefix+uid.String(), s.ch)
if err != nil {
return err
return fmt.Errorf("failed to watch health for %s: %v", uid, err)
}
snapConnectProxy.PeerUpstreamEndpoints.InitWatch(uid, nil)
// Check whether a watch for this peer exists to avoid duplicates.
if ok := snapConnectProxy.UpstreamPeerTrustBundles.IsWatched(uid.Peer); !ok {
@ -275,7 +274,7 @@ func (s *handlerConnectProxy) setupWatchesForPeeredUpstream(
// If a peered upstream is set to local mesh gw mode,
// set up a watch for them.
if u.MeshGateway.Mode == structs.MeshGatewayModeLocal {
if mgwMode == structs.MeshGatewayModeLocal {
gk := GatewayKey{
Partition: s.source.NodePartitionOrDefault(),
Datacenter: s.source.Datacenter,
@ -343,44 +342,9 @@ func (s *handlerConnectProxy) handleUpdate(ctx context.Context, u UpdateEvent, s
}
seenUpstreams[uid] = struct{}{}
s.logger.Trace("initializing watch of peered upstream", "upstream", uid)
hctx, hcancel := context.WithCancel(ctx)
err := s.dataSources.Health.Notify(hctx, &structs.ServiceSpecificRequest{
PeerName: uid.Peer,
Datacenter: s.source.Datacenter,
QueryOptions: structs.QueryOptions{
Token: s.token,
},
ServiceName: psn.ServiceName.Name,
Connect: true,
// Note that Identifier doesn't type-prefix for service any more as it's
// the default and makes metrics and other things much cleaner. It's
// simpler for us if we have the type to make things unambiguous.
Source: *s.source,
EnterpriseMeta: uid.EnterpriseMeta,
}, upstreamPeerWatchIDPrefix+uid.String(), s.ch)
err := s.setupWatchesForPeeredUpstream(ctx, snap.ConnectProxy, uid, s.proxyCfg.MeshGateway.Mode, s.source.Datacenter)
if err != nil {
hcancel()
return fmt.Errorf("failed to watch health for %s: %v", uid, err)
}
snap.ConnectProxy.PeerUpstreamEndpoints.InitWatch(uid, hcancel)
// Check whether a watch for this peer exists to avoid duplicates.
if ok := snap.ConnectProxy.UpstreamPeerTrustBundles.IsWatched(uid.Peer); !ok {
peerCtx, cancel := context.WithCancel(ctx)
if err := s.dataSources.TrustBundle.Notify(peerCtx, &cachetype.TrustBundleReadRequest{
Request: &pbpeering.TrustBundleReadRequest{
Name: uid.Peer,
Partition: uid.PartitionOrDefault(),
},
QueryOptions: structs.QueryOptions{Token: s.token},
}, peerTrustBundleIDPrefix+uid.Peer, s.ch); err != nil {
cancel()
return fmt.Errorf("error while watching trust bundle for peer %q: %w", uid.Peer, err)
}
snap.ConnectProxy.UpstreamPeerTrustBundles.InitWatch(uid.Peer, cancel)
return fmt.Errorf("failed to setup watches for peered upstream %q: %w", uid.String(), err)
}
}
snap.ConnectProxy.PeeredUpstreams = seenUpstreams
@ -474,7 +438,7 @@ func (s *handlerConnectProxy) handleUpdate(ctx context.Context, u UpdateEvent, s
meshGateway := s.proxyCfg.MeshGateway
if u != nil {
meshGateway = meshGateway.OverlayWith(u.MeshGateway)
meshGateway = u.MeshGateway
}
watchOpts := discoveryChainWatchOpts{
id: NewUpstreamIDFromServiceName(svc),

73
agent/proxycfg/state_test.go
View File

@ -556,7 +556,11 @@ func TestState_WatchesAndUpdates(t *testing.T) {
}
if meshGatewayProxyConfigValue != structs.MeshGatewayModeDefault {
ns.Proxy.MeshGateway.Mode = meshGatewayProxyConfigValue
for i := range ns.Proxy.Upstreams {
if u := &ns.Proxy.Upstreams[i]; u.MeshGateway.Mode == structs.MeshGatewayModeDefault {
u.MeshGateway.Mode = meshGatewayProxyConfigValue
}
}
}
ixnMatch := TestIntentions()
@ -3116,7 +3120,10 @@ func TestState_WatchesAndUpdates(t *testing.T) {
Address: "10.0.1.1",
Proxy: structs.ConnectProxyConfig{
DestinationServiceName: "api",
Mode: structs.ProxyModeTransparent,
MeshGateway: structs.MeshGatewayConfig{
Mode: structs.MeshGatewayModeLocal,
},
Mode: structs.ProxyModeTransparent,
Upstreams: structs.Upstreams{
{
DestinationName: "api-a",
@ -3228,11 +3235,11 @@ func TestState_WatchesAndUpdates(t *testing.T) {
},
},
{
// Peered upstream will have set up 3 more watches
requiredWatches: map[string]verifyWatchRequest{
upstreamPeerWatchIDPrefix + extApiUID.String(): genVerifyServiceSpecificPeeredRequest("api-a", "", "dc1", "peer-a", true),
upstreamPeerWatchIDPrefix + extDBUID.String(): genVerifyServiceSpecificPeeredRequest("db", "", "dc1", "peer-a", true),
peerTrustBundleIDPrefix + "peer-a": genVerifyTrustBundleReadWatch("peer-a"),
"mesh-gateway:dc1": genVerifyGatewayWatch("dc1"),
},
events: []UpdateEvent{
{
@ -3271,14 +3278,18 @@ func TestState_WatchesAndUpdates(t *testing.T) {
require.True(t, ok)
prototest.AssertDeepEqual(t, peerTrustBundles.Bundles[0], ptb)
// Sanity check that local upstream maps are not populated
// Ensure that maps for non-peering endpoints are not populated.
require.Empty(t, snap.ConnectProxy.WatchedUpstreamEndpoints[extDBUID])
require.Empty(t, snap.ConnectProxy.PassthroughUpstreams[extDBUID])
require.Empty(t, snap.ConnectProxy.PassthroughIndices)
// Local gateway is watched but there are no endpoints
require.True(t, snap.ConnectProxy.WatchedLocalGWEndpoints.IsWatched("dc1"))
_, ok = snap.ConnectProxy.WatchedLocalGWEndpoints.Get("dc1")
require.False(t, ok)
},
},
{
// Add another instance of "api-a" service
events: []UpdateEvent{
{
CorrelationID: upstreamPeerWatchIDPrefix + extDBUID.String(),
@ -3300,6 +3311,20 @@ func TestState_WatchesAndUpdates(t *testing.T) {
},
},
},
{
CorrelationID: "mesh-gateway:dc1",
Result: &structs.IndexedCheckServiceNodes{
Nodes: structs.CheckServiceNodes{
{
Node: &structs.Node{
Node: "node1",
Address: "10.1.2.3",
},
Service: structs.TestNodeServiceMeshGateway(t),
},
},
},
},
},
verifySnapshot: func(t testing.TB, snap *ConfigSnapshot) {
require.True(t, snap.Valid(), "proxy with roots/leaf/intentions is valid")
@ -3319,12 +3344,18 @@ func TestState_WatchesAndUpdates(t *testing.T) {
require.NotNil(t, ep)
require.Len(t, ep, 1)
require.Equal(t, 1, snap.ConnectProxy.WatchedLocalGWEndpoints.Len())
gwEp, _ := snap.ConnectProxy.WatchedLocalGWEndpoints.Get("dc1")
require.NotNil(t, gwEp)
require.Len(t, gwEp, 1)
// Expect a trust bundle
ptb, ok := snap.ConnectProxy.UpstreamPeerTrustBundles.Get("peer-a")
require.True(t, ok)
prototest.AssertDeepEqual(t, peerTrustBundles.Bundles[0], ptb)
// Sanity check that local upstream maps are not populated
// Ensure that maps for non-peering endpoints are not populated.
require.Empty(t, snap.ConnectProxy.WatchedUpstreamEndpoints[extDBUID])
require.Empty(t, snap.ConnectProxy.PassthroughUpstreams[extDBUID])
require.Empty(t, snap.ConnectProxy.PassthroughIndices)
@ -3377,6 +3408,9 @@ func TestState_WatchesAndUpdates(t *testing.T) {
DestinationName: "api-a",
DestinationPeer: "peer-a",
LocalBindPort: 10001,
MeshGateway: structs.MeshGatewayConfig{
Mode: structs.MeshGatewayModeLocal,
},
},
},
},
@ -3401,6 +3435,7 @@ func TestState_WatchesAndUpdates(t *testing.T) {
peeringTrustBundlesWatchID: genVerifyTrustBundleListWatch("web"),
peerTrustBundleIDPrefix + "peer-a": genVerifyTrustBundleReadWatch("peer-a"),
upstreamPeerWatchIDPrefix + extApiUID.String(): genVerifyServiceSpecificPeeredRequest("api-a", "", "dc1", "peer-a", true),
"mesh-gateway:dc1": genVerifyGatewayWatch("dc1"),
},
verifySnapshot: func(t testing.TB, snap *ConfigSnapshot) {
require.False(t, snap.Valid(), "should not be valid")
@ -3423,6 +3458,11 @@ func TestState_WatchesAndUpdates(t *testing.T) {
_, ok = snap.ConnectProxy.PeerUpstreamEndpoints.Get(extApiUID)
require.False(t, ok) // but no data
// Local gateway is watched but there are no endpoints
require.True(t, snap.ConnectProxy.WatchedLocalGWEndpoints.IsWatched("dc1"))
_, ok = snap.ConnectProxy.WatchedLocalGWEndpoints.Get("dc1")
require.False(t, ok)
require.Len(t, snap.ConnectProxy.WatchedServiceChecks, 0, "%+v", snap.ConnectProxy.WatchedServiceChecks)
require.Len(t, snap.ConnectProxy.PreparedQueryEndpoints, 0, "%+v", snap.ConnectProxy.PreparedQueryEndpoints)
require.Len(t, snap.ConnectProxy.InboundPeerTrustBundles, 0, "%+v", snap.ConnectProxy.InboundPeerTrustBundles)
@ -3494,6 +3534,20 @@ func TestState_WatchesAndUpdates(t *testing.T) {
},
},
},
{
CorrelationID: "mesh-gateway:dc1",
Result: &structs.IndexedCheckServiceNodes{
Nodes: structs.CheckServiceNodes{
{
Node: &structs.Node{
Node: "node1",
Address: "10.1.2.3",
},
Service: structs.TestNodeServiceMeshGateway(t),
},
},
},
},
},
verifySnapshot: func(t testing.TB, snap *ConfigSnapshot) {
require.True(t, snap.Valid())
@ -3517,8 +3571,11 @@ func TestState_WatchesAndUpdates(t *testing.T) {
ep, _ := snap.ConnectProxy.PeerUpstreamEndpoints.Get(extApiUID)
require.NotNil(t, ep)
require.Len(t, snap.ConnectProxy.WatchedServiceChecks, 0, "%+v", snap.ConnectProxy.WatchedServiceChecks)
require.Len(t, snap.ConnectProxy.PreparedQueryEndpoints, 0, "%+v", snap.ConnectProxy.PreparedQueryEndpoints)
require.Equal(t, 1, snap.ConnectProxy.WatchedLocalGWEndpoints.Len())
gwEp, _ := snap.ConnectProxy.WatchedLocalGWEndpoints.Get("dc1")
require.NotNil(t, gwEp)
require.Len(t, gwEp, 1)
},
},
},

2
agent/proxycfg/testing_peering.go
View File

@ -256,7 +256,7 @@ func TestConfigSnapshotPeeringLocalMeshGateway(t testing.T) *ConfigSnapshot {
DestinationName: "payments",
DestinationPeer: "cloud",
LocalBindPort: 9090,
MeshGateway: structs.MeshGatewayConfig{Mode: structs.MeshGatewayModeLocal},
MeshGateway: structs.MeshGatewayConfig{Mode: structs.MeshGatewayModeRemote},
}
paymentsUID = NewUpstreamID(&paymentsUpstream)

8
agent/structs/connect_proxy_config.go
View File

@ -69,14 +69,6 @@ func (c *MeshGatewayConfig) IsZero() bool {
return *c == zeroVal
}
func (base *MeshGatewayConfig) OverlayWith(overlay MeshGatewayConfig) MeshGatewayConfig {
out := *base
if overlay.Mode != MeshGatewayModeDefault {
out.Mode = overlay.Mode
}
return out
}
func ValidateMeshGatewayMode(mode string) (MeshGatewayMode, error) {
switch MeshGatewayMode(mode) {
case MeshGatewayModeNone:

42
agent/structs/connect_proxy_config_test.go
View File

@ -2,7 +2,6 @@ package structs
import (
"encoding/json"
"fmt"
"testing"
"github.com/hashicorp/consul/api"
@ -618,47 +617,6 @@ func TestConnectProxyConfig_UnmarshalJSON(t *testing.T) {
}
}
func TestMeshGatewayConfig_OverlayWith(t *testing.T) {
var (
D = MeshGatewayConfig{Mode: MeshGatewayModeDefault}
N = MeshGatewayConfig{Mode: MeshGatewayModeNone}
R = MeshGatewayConfig{Mode: MeshGatewayModeRemote}
L = MeshGatewayConfig{Mode: MeshGatewayModeLocal}
)
type testCase struct {
base, overlay, expect MeshGatewayConfig
}
cases := []testCase{
{D, D, D},
{D, N, N},
{D, R, R},
{D, L, L},
{N, D, N},
{N, N, N},
{N, R, R},
{N, L, L},
{R, D, R},
{R, N, N},
{R, R, R},
{R, L, L},
{L, D, L},
{L, N, N},
{L, R, R},
{L, L, L},
}
for _, tc := range cases {
tc := tc
t.Run(fmt.Sprintf("%s overlaid with %s", tc.base.Mode, tc.overlay.Mode),
func(t *testing.T) {
got := tc.base.OverlayWith(tc.overlay)
require.Equal(t, tc.expect, got)
})
}
}
func TestValidateMeshGatewayMode(t *testing.T) {
for _, tc := range []struct {
modeConstant string

1
agent/xds/endpoints.go
View File

@ -547,6 +547,7 @@ func (s *ResourceGenerator) makeUpstreamLoadAssignmentForPeerService(cfgSnap *pr
}
upstream := cfgSnap.ConnectProxy.UpstreamConfig[uid]
// If an upstream is configured with local mesh gw mode, we make a load assignment
// from the gateway endpoints instead of those of the upstreams.
if upstream != nil && upstream.MeshGateway.Mode == structs.MeshGatewayModeLocal {

33
agent/xds/testdata/clusters/local-mesh-gateway-with-peered-upstreams.latest.golden vendored
View File

@ -29,19 +29,34 @@
{
"@type": "type.googleapis.com/envoy.config.cluster.v3.Cluster",
"name": "payments.default.cloud.external.1c053652-8512-4373-90cf-5a7f6263a994.consul",
"type": "EDS",
"edsClusterConfig": {
"edsConfig": {
"ads": {
},
"resourceApiVersion": "V3"
}
},
"type": "LOGICAL_DNS",
"connectTimeout": "5s",
"loadAssignment": {
"clusterName": "payments.default.cloud.external.1c053652-8512-4373-90cf-5a7f6263a994.consul",
"endpoints": [
{
"lbEndpoints": [
{
"endpoint": {
"address": {
"socketAddress": {
"address": "123.us-east-1.elb.notaws.com",
"portValue": 8443
}
}
},
"healthStatus": "HEALTHY",
"loadBalancingWeight": 1
}
]
}
]
},
"circuitBreakers": {
},
"dnsRefreshRate": "10s",
"dnsLookupFamily": "V4_ONLY",
"outlierDetection": {
"maxEjectionPercent": 100
},

22
agent/xds/testdata/endpoints/local-mesh-gateway-with-peered-upstreams.latest.golden vendored
View File

@ -1,28 +1,6 @@
{
"versionInfo": "00000001",
"resources": [
{
"@type": "type.googleapis.com/envoy.config.endpoint.v3.ClusterLoadAssignment",
"clusterName": "payments.default.cloud.external.1c053652-8512-4373-90cf-5a7f6263a994.consul",
"endpoints": [
{
"lbEndpoints": [
{
"endpoint": {
"address": {
"socketAddress": {
"address": "10.0.0.1",
"portValue": 1234
}
}
},
"healthStatus": "HEALTHY",
"loadBalancingWeight": 1
}
]
}
]
},
{
"@type": "type.googleapis.com/envoy.config.endpoint.v3.ClusterLoadAssignment",
"clusterName": "refunds.default.cloud.external.1c053652-8512-4373-90cf-5a7f6263a994.consul",