open-consul/agent/xds/resources_test.go

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package xds
import (
"path/filepath"
"sort"
"testing"
envoy_cluster_v3 "github.com/envoyproxy/go-control-plane/envoy/config/cluster/v3"
envoy_endpoint_v3 "github.com/envoyproxy/go-control-plane/envoy/config/endpoint/v3"
envoy_listener_v3 "github.com/envoyproxy/go-control-plane/envoy/config/listener/v3"
envoy_route_v3 "github.com/envoyproxy/go-control-plane/envoy/config/route/v3"
testinf "github.com/mitchellh/go-testing-interface"
"github.com/stretchr/testify/require"
"github.com/hashicorp/consul/agent/proxycfg"
"github.com/hashicorp/consul/agent/structs"
"github.com/hashicorp/consul/agent/xds/proxysupport"
"github.com/hashicorp/consul/agent/xds/xdscommon"
"github.com/hashicorp/consul/sdk/testutil"
)
var testTypeUrlToPrettyName = map[string]string{
xdscommon.ListenerType: "listeners",
xdscommon.RouteType: "routes",
xdscommon.ClusterType: "clusters",
xdscommon.EndpointType: "endpoints",
}
type goldenTestCase struct {
name string
create func(t testinf.T) *proxycfg.ConfigSnapshot
// Setup is called before the test starts. It is passed the snapshot from
// TestConfigSnapshot and is allowed to modify it in any way to setup the
// test input.
setup func(snap *proxycfg.ConfigSnapshot)
overrideGoldenName string
generatorSetup func(*ResourceGenerator)
}
func TestAllResourcesFromSnapshot(t *testing.T) {
if testing.Short() {
t.Skip("too slow for testing.Short")
}
type testcase = goldenTestCase
run := func(
t *testing.T,
sf supportedProxyFeatures,
envoyVersion string,
latestEnvoyVersion string,
tt testcase,
) {
// Sanity check default with no overrides first
snap := tt.create(t)
// TODO: it would be nice to be able to ensure these snapshots are always valid before we use them in a test.
// require.True(t, snap.Valid())
// We need to replace the TLS certs with deterministic ones to make golden
// files workable. Note we don't update these otherwise they'd change
// golder files for every test case and so not be any use!
setupTLSRootsAndLeaf(t, snap)
if tt.setup != nil {
tt.setup(snap)
}
// Need server just for logger dependency
g := newResourceGenerator(testutil.Logger(t), nil, false)
g.ProxyFeatures = sf
if tt.generatorSetup != nil {
tt.generatorSetup(g)
}
resources, err := g.allResourcesFromSnapshot(snap)
require.NoError(t, err)
typeUrls := []string{
xdscommon.ListenerType,
xdscommon.RouteType,
xdscommon.ClusterType,
xdscommon.EndpointType,
}
require.Len(t, resources, len(typeUrls))
for _, typeUrl := range typeUrls {
prettyName := testTypeUrlToPrettyName[typeUrl]
t.Run(prettyName, func(t *testing.T) {
items, ok := resources[typeUrl]
require.True(t, ok)
sort.Slice(items, func(i, j int) bool {
switch typeUrl {
case xdscommon.ListenerType:
return items[i].(*envoy_listener_v3.Listener).Name < items[j].(*envoy_listener_v3.Listener).Name
case xdscommon.RouteType:
return items[i].(*envoy_route_v3.RouteConfiguration).Name < items[j].(*envoy_route_v3.RouteConfiguration).Name
case xdscommon.ClusterType:
return items[i].(*envoy_cluster_v3.Cluster).Name < items[j].(*envoy_cluster_v3.Cluster).Name
case xdscommon.EndpointType:
return items[i].(*envoy_endpoint_v3.ClusterLoadAssignment).ClusterName < items[j].(*envoy_endpoint_v3.ClusterLoadAssignment).ClusterName
default:
panic("not possible")
}
})
r, err := createResponse(typeUrl, "00000001", "00000001", items)
require.NoError(t, err)
gotJSON := protoToJSON(t, r)
gName := tt.name
if tt.overrideGoldenName != "" {
gName = tt.overrideGoldenName
}
expectedJSON := goldenEnvoy(t, filepath.Join(prettyName, gName), envoyVersion, latestEnvoyVersion, gotJSON)
require.JSONEq(t, expectedJSON, gotJSON)
})
}
}
tests := []testcase{
{
name: "defaults",
create: func(t testinf.T) *proxycfg.ConfigSnapshot {
return proxycfg.TestConfigSnapshot(t, nil, nil)
},
},
{
name: "connect-proxy-exported-to-peers",
create: func(t testinf.T) *proxycfg.ConfigSnapshot {
return proxycfg.TestConfigSnapshot(t, func(ns *structs.NodeService) {
// This test is only concerned about the SPIFFE cert validator config in the public listener
// so we empty out the upstreams to avoid generating unnecessary upstream listeners.
ns.Proxy.Upstreams = structs.Upstreams{}
}, []proxycfg.UpdateEvent{
{
CorrelationID: "peering-trust-bundles",
Result: proxycfg.TestPeerTrustBundles(t),
},
})
},
},
{
name: "transparent-proxy",
create: proxycfg.TestConfigSnapshotTransparentProxy,
},
{
name: "connect-proxy-with-peered-upstreams",
create: proxycfg.TestConfigSnapshotPeering,
},
{
name: "transparent-proxy-with-peered-upstreams",
create: proxycfg.TestConfigSnapshotPeeringTProxy,
},
}
tests = append(tests, getConnectProxyTransparentProxyGoldenTestCases()...)
tests = append(tests, getMeshGatewayPeeringGoldenTestCases()...)
tests = append(tests, getEnterpriseGoldenTestCases()...)
latestEnvoyVersion := proxysupport.EnvoyVersions[0]
for _, envoyVersion := range proxysupport.EnvoyVersions {
sf, err := determineSupportedProxyFeaturesFromString(envoyVersion)
require.NoError(t, err)
t.Run("envoy-"+envoyVersion, func(t *testing.T) {
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
run(t, sf, envoyVersion, latestEnvoyVersion, tt)
})
}
})
}
}
func getConnectProxyTransparentProxyGoldenTestCases() []goldenTestCase {
return []goldenTestCase{
{
name: "transparent-proxy-destination",
create: proxycfg.TestConfigSnapshotTransparentProxyDestination,
},
{
name: "transparent-proxy-destination-http",
create: proxycfg.TestConfigSnapshotTransparentProxyDestinationHTTP,
},
{
name: "transparent-proxy-terminating-gateway-destinations-only",
create: func(t testinf.T) *proxycfg.ConfigSnapshot {
return proxycfg.TestConfigSnapshotTerminatingGatewayDestinations(t, true, nil)
},
},
}
}
func getMeshGatewayPeeringGoldenTestCases() []goldenTestCase {
return []goldenTestCase{
{
name: "mesh-gateway-with-exported-peered-services",
create: func(t testinf.T) *proxycfg.ConfigSnapshot {
return proxycfg.TestConfigSnapshotPeeredMeshGateway(t, "default-services-tcp", nil, nil)
},
},
{
name: "mesh-gateway-with-exported-peered-services-http",
create: func(t testinf.T) *proxycfg.ConfigSnapshot {
return proxycfg.TestConfigSnapshotPeeredMeshGateway(t, "default-services-http", nil, nil)
},
},
{
name: "mesh-gateway-with-exported-peered-services-http-with-router",
create: func(t testinf.T) *proxycfg.ConfigSnapshot {
return proxycfg.TestConfigSnapshotPeeredMeshGateway(t, "chain-and-l7-stuff", nil, nil)
},
},
}
}