359 lines
9.4 KiB
Go
359 lines
9.4 KiB
Go
package xds
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import (
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"bytes"
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"log"
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"os"
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"path"
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"sort"
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"testing"
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"text/template"
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envoy "github.com/envoyproxy/go-control-plane/envoy/api/v2"
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"github.com/hashicorp/consul/agent/proxycfg"
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"github.com/hashicorp/consul/agent/structs"
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testinf "github.com/mitchellh/go-testing-interface"
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"github.com/stretchr/testify/require"
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)
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func TestClustersFromSnapshot(t *testing.T) {
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tests := []struct {
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name string
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create func(t testinf.T) *proxycfg.ConfigSnapshot
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// Setup is called before the test starts. It is passed the snapshot from
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// create func and is allowed to modify it in any way to setup the
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// test input.
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setup func(snap *proxycfg.ConfigSnapshot)
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overrideGoldenName string
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}{
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{
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name: "defaults",
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create: proxycfg.TestConfigSnapshot,
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setup: nil, // Default snapshot
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},
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{
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name: "custom-local-app",
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create: proxycfg.TestConfigSnapshot,
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setup: func(snap *proxycfg.ConfigSnapshot) {
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snap.Proxy.Config["envoy_local_cluster_json"] =
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customAppClusterJSON(t, customClusterJSONOptions{
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Name: "mylocal",
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IncludeType: false,
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})
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},
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},
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{
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name: "custom-local-app-typed",
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create: proxycfg.TestConfigSnapshot,
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overrideGoldenName: "custom-local-app",
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setup: func(snap *proxycfg.ConfigSnapshot) {
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snap.Proxy.Config["envoy_local_cluster_json"] =
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customAppClusterJSON(t, customClusterJSONOptions{
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Name: "mylocal",
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IncludeType: true,
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})
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},
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},
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{
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name: "custom-upstream",
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create: proxycfg.TestConfigSnapshot,
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setup: func(snap *proxycfg.ConfigSnapshot) {
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snap.Proxy.Upstreams[0].Config["envoy_cluster_json"] =
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customAppClusterJSON(t, customClusterJSONOptions{
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Name: "myservice",
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IncludeType: false,
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})
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},
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},
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{
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name: "custom-upstream-typed",
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create: proxycfg.TestConfigSnapshot,
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overrideGoldenName: "custom-upstream",
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setup: func(snap *proxycfg.ConfigSnapshot) {
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snap.Proxy.Upstreams[0].Config["envoy_cluster_json"] =
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customAppClusterJSON(t, customClusterJSONOptions{
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Name: "myservice",
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IncludeType: true,
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})
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},
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},
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{
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name: "custom-upstream-ignores-tls",
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create: proxycfg.TestConfigSnapshot,
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overrideGoldenName: "custom-upstream", // should be the same
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setup: func(snap *proxycfg.ConfigSnapshot) {
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snap.Proxy.Upstreams[0].Config["envoy_cluster_json"] =
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customAppClusterJSON(t, customClusterJSONOptions{
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Name: "myservice",
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IncludeType: true,
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// Attempt to override the TLS context should be ignored
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TLSContext: `{"commonTlsContext": {}}`,
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})
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},
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},
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{
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name: "custom-timeouts",
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create: proxycfg.TestConfigSnapshot,
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setup: func(snap *proxycfg.ConfigSnapshot) {
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snap.Proxy.Config["local_connect_timeout_ms"] = 1234
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snap.Proxy.Upstreams[0].Config["connect_timeout_ms"] = 2345
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},
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},
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{
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name: "connect-proxy-with-chain",
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create: proxycfg.TestConfigSnapshotDiscoveryChain,
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setup: nil,
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},
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{
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name: "connect-proxy-with-chain-and-overrides",
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create: proxycfg.TestConfigSnapshotDiscoveryChainWithOverrides,
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setup: nil,
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},
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{
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name: "connect-proxy-with-chain-and-failover",
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create: proxycfg.TestConfigSnapshotDiscoveryChainWithFailover,
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setup: nil,
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},
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{
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name: "splitter-with-resolver-redirect",
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create: proxycfg.TestConfigSnapshotDiscoveryChain_SplitterWithResolverRedirectMultiDC,
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setup: nil,
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},
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{
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name: "mesh-gateway",
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create: proxycfg.TestConfigSnapshotMeshGateway,
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setup: nil,
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},
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{
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name: "mesh-gateway-service-subsets",
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create: proxycfg.TestConfigSnapshotMeshGateway,
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setup: func(snap *proxycfg.ConfigSnapshot) {
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snap.MeshGateway.ServiceResolvers = map[string]*structs.ServiceResolverConfigEntry{
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"bar": &structs.ServiceResolverConfigEntry{
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Kind: structs.ServiceResolver,
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Name: "bar",
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Subsets: map[string]structs.ServiceResolverSubset{
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"v1": structs.ServiceResolverSubset{
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Filter: "Service.Meta.Version == 1",
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},
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"v2": structs.ServiceResolverSubset{
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Filter: "Service.Meta.Version == 2",
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OnlyPassing: true,
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},
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},
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},
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}
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},
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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require := require.New(t)
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// Sanity check default with no overrides first
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snap := tt.create(t)
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// We need to replace the TLS certs with deterministic ones to make golden
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// files workable. Note we don't update these otherwise they'd change
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// golder files for every test case and so not be any use!
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if snap.ConnectProxy.Leaf != nil {
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snap.ConnectProxy.Leaf.CertPEM = golden(t, "test-leaf-cert", "")
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snap.ConnectProxy.Leaf.PrivateKeyPEM = golden(t, "test-leaf-key", "")
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}
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if snap.Roots != nil {
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snap.Roots.Roots[0].RootCert = golden(t, "test-root-cert", "")
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}
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if tt.setup != nil {
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tt.setup(snap)
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}
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// Need server just for logger dependency
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s := Server{Logger: log.New(os.Stderr, "", log.LstdFlags)}
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clusters, err := s.clustersFromSnapshot(snap, "my-token")
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require.NoError(err)
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sort.Slice(clusters, func(i, j int) bool {
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return clusters[i].(*envoy.Cluster).Name < clusters[j].(*envoy.Cluster).Name
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})
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r, err := createResponse(ClusterType, "00000001", "00000001", clusters)
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require.NoError(err)
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gotJSON := responseToJSON(t, r)
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gName := tt.name
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if tt.overrideGoldenName != "" {
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gName = tt.overrideGoldenName
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}
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require.JSONEq(golden(t, path.Join("clusters", gName), gotJSON), gotJSON)
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})
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}
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}
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func expectClustersJSONResources(t *testing.T, snap *proxycfg.ConfigSnapshot, token string, v, n uint64) map[string]string {
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return map[string]string{
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"local_app": `
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{
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"@type": "type.googleapis.com/envoy.api.v2.Cluster",
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"name": "local_app",
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"type": "STATIC",
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"connectTimeout": "5s",
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"loadAssignment": {
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"clusterName": "local_app",
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"endpoints": [
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{
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"lbEndpoints": [
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{
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"endpoint": {
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"address": {
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"socketAddress": {
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"address": "127.0.0.1",
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"portValue": 8080
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}
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}
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}
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}
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]
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}
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]
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}
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}`,
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"db": `
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{
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"@type": "type.googleapis.com/envoy.api.v2.Cluster",
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"name": "db.default.dc1.internal.11111111-2222-3333-4444-555555555555.consul",
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"type": "EDS",
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"edsClusterConfig": {
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"edsConfig": {
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"ads": {
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}
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}
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},
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"outlierDetection": {
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},
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"connectTimeout": "1s",
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"tlsContext": ` + expectedUpstreamTLSContextJSON(t, snap, "db.default.dc1.internal.11111111-2222-3333-4444-555555555555.consul") + `
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}`,
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"prepared_query:geo-cache": `
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{
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"@type": "type.googleapis.com/envoy.api.v2.Cluster",
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"name": "geo-cache.default.dc1.query.11111111-2222-3333-4444-555555555555.consul",
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"type": "EDS",
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"edsClusterConfig": {
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"edsConfig": {
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"ads": {
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}
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}
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},
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"outlierDetection": {
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},
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"connectTimeout": "5s",
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"tlsContext": ` + expectedUpstreamTLSContextJSON(t, snap, "geo-cache.default.dc1.query.11111111-2222-3333-4444-555555555555.consul") + `
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}`,
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}
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}
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func expectClustersJSONFromResources(t *testing.T, snap *proxycfg.ConfigSnapshot, token string, v, n uint64, resourcesJSON map[string]string) string {
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resJSON := ""
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// Sort resources into specific order because that matters in JSONEq
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// comparison later.
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keyOrder := []string{"local_app"}
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for _, u := range snap.Proxy.Upstreams {
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keyOrder = append(keyOrder, u.Identifier())
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}
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for _, k := range keyOrder {
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j, ok := resourcesJSON[k]
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if !ok {
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continue
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}
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if resJSON != "" {
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resJSON += ",\n"
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}
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resJSON += j
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}
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return `{
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"versionInfo": "` + hexString(v) + `",
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"resources": [` + resJSON + `],
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"typeUrl": "type.googleapis.com/envoy.api.v2.Cluster",
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"nonce": "` + hexString(n) + `"
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}`
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}
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func expectClustersJSON(t *testing.T, snap *proxycfg.ConfigSnapshot, token string, v, n uint64) string {
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return expectClustersJSONFromResources(t, snap, token, v, n,
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expectClustersJSONResources(t, snap, token, v, n))
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}
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type customClusterJSONOptions struct {
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Name string
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IncludeType bool
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TLSContext string
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}
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var customEDSClusterJSONTpl = `{
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{{ if .IncludeType -}}
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"@type": "type.googleapis.com/envoy.api.v2.Cluster",
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{{- end }}
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{{ if .TLSContext -}}
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"tlsContext": {{ .TLSContext }},
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{{- end }}
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"name": "{{ .Name }}",
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"type": "EDS",
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"edsClusterConfig": {
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"edsConfig": {
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"ads": {
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}
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}
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},
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"connectTimeout": "5s"
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}`
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var customEDSClusterJSONTemplate = template.Must(template.New("").Parse(customEDSClusterJSONTpl))
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func customEDSClusterJSON(t *testing.T, opts customClusterJSONOptions) string {
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t.Helper()
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var buf bytes.Buffer
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err := customEDSClusterJSONTemplate.Execute(&buf, opts)
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require.NoError(t, err)
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return buf.String()
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}
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var customAppClusterJSONTpl = `{
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{{ if .IncludeType -}}
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"@type": "type.googleapis.com/envoy.api.v2.Cluster",
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{{- end }}
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{{ if .TLSContext -}}
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"tlsContext": {{ .TLSContext }},
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{{- end }}
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"name": "{{ .Name }}",
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"connectTimeout": "5s",
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"hosts": [
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{
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"socketAddress": {
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"address": "127.0.0.1",
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"portValue": 8080
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}
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}
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]
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}`
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var customAppClusterJSONTemplate = template.Must(template.New("").Parse(customAppClusterJSONTpl))
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func customAppClusterJSON(t *testing.T, opts customClusterJSONOptions) string {
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t.Helper()
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var buf bytes.Buffer
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err := customAppClusterJSONTemplate.Execute(&buf, opts)
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require.NoError(t, err)
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return buf.String()
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}
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