package proxycfg import ( "context" "fmt" "path" "sync" "sync/atomic" "time" "github.com/hashicorp/consul/agent/cache" cachetype "github.com/hashicorp/consul/agent/cache-types" "github.com/hashicorp/consul/agent/connect" "github.com/hashicorp/consul/agent/consul/discoverychain" "github.com/hashicorp/consul/agent/structs" "github.com/mitchellh/go-testing-interface" "github.com/stretchr/testify/require" ) // TestCacheTypes encapsulates all the different cache types proxycfg.State will // watch/request for controlling one during testing. type TestCacheTypes struct { roots *ControllableCacheType leaf *ControllableCacheType intentions *ControllableCacheType health *ControllableCacheType query *ControllableCacheType compiledChain *ControllableCacheType } // NewTestCacheTypes creates a set of ControllableCacheTypes for all types that // proxycfg will watch suitable for testing a proxycfg.State or Manager. func NewTestCacheTypes(t testing.T) *TestCacheTypes { t.Helper() ct := &TestCacheTypes{ roots: NewControllableCacheType(t), leaf: NewControllableCacheType(t), intentions: NewControllableCacheType(t), health: NewControllableCacheType(t), query: NewControllableCacheType(t), compiledChain: NewControllableCacheType(t), } ct.query.blocking = false return ct } // TestCacheWithTypes registers ControllableCacheTypes for all types that // proxycfg will watch suitable for testing a proxycfg.State or Manager. func TestCacheWithTypes(t testing.T, types *TestCacheTypes) *cache.Cache { c := cache.TestCache(t) c.RegisterType(cachetype.ConnectCARootName, types.roots, &cache.RegisterOptions{ Refresh: true, RefreshTimer: 0, RefreshTimeout: 10 * time.Minute, }) c.RegisterType(cachetype.ConnectCALeafName, types.leaf, &cache.RegisterOptions{ Refresh: true, RefreshTimer: 0, RefreshTimeout: 10 * time.Minute, }) c.RegisterType(cachetype.IntentionMatchName, types.intentions, &cache.RegisterOptions{ Refresh: true, RefreshTimer: 0, RefreshTimeout: 10 * time.Minute, }) c.RegisterType(cachetype.HealthServicesName, types.health, &cache.RegisterOptions{ Refresh: true, RefreshTimer: 0, RefreshTimeout: 10 * time.Minute, }) c.RegisterType(cachetype.PreparedQueryName, types.query, &cache.RegisterOptions{ Refresh: false, }) c.RegisterType(cachetype.CompiledDiscoveryChainName, types.compiledChain, &cache.RegisterOptions{ Refresh: true, RefreshTimer: 0, RefreshTimeout: 10 * time.Minute, }) return c } // TestCerts generates a CA and Leaf suitable for returning as mock CA // root/leaf cache requests. func TestCerts(t testing.T) (*structs.IndexedCARoots, *structs.IssuedCert) { t.Helper() ca := connect.TestCA(t, nil) roots := &structs.IndexedCARoots{ ActiveRootID: ca.ID, TrustDomain: fmt.Sprintf("%s.consul", connect.TestClusterID), Roots: []*structs.CARoot{ca}, } return roots, TestLeafForCA(t, ca) } // TestLeafForCA generates new Leaf suitable for returning as mock CA // leaf cache response, signed by an existing CA. func TestLeafForCA(t testing.T, ca *structs.CARoot) *structs.IssuedCert { leafPEM, pkPEM := connect.TestLeaf(t, "web", ca) leafCert, err := connect.ParseCert(leafPEM) require.NoError(t, err) return &structs.IssuedCert{ SerialNumber: connect.HexString(leafCert.SerialNumber.Bytes()), CertPEM: leafPEM, PrivateKeyPEM: pkPEM, Service: "web", ServiceURI: leafCert.URIs[0].String(), ValidAfter: leafCert.NotBefore, ValidBefore: leafCert.NotAfter, } } // TestIntentions returns a sample intentions match result useful to // mocking service discovery cache results. func TestIntentions(t testing.T) *structs.IndexedIntentionMatches { return &structs.IndexedIntentionMatches{ Matches: []structs.Intentions{ []*structs.Intention{ &structs.Intention{ ID: "foo", SourceNS: "default", SourceName: "billing", DestinationNS: "default", DestinationName: "web", Action: structs.IntentionActionAllow, }, }, }, } } // TestUpstreamNodes returns a sample service discovery result useful to // mocking service discovery cache results. func TestUpstreamNodes(t testing.T) structs.CheckServiceNodes { return structs.CheckServiceNodes{ structs.CheckServiceNode{ Node: &structs.Node{ ID: "test1", Node: "test1", Address: "10.10.1.1", Datacenter: "dc1", }, Service: structs.TestNodeService(t), }, structs.CheckServiceNode{ Node: &structs.Node{ ID: "test2", Node: "test2", Address: "10.10.1.2", Datacenter: "dc1", }, Service: structs.TestNodeService(t), }, } } func TestUpstreamNodesDC2(t testing.T) structs.CheckServiceNodes { return structs.CheckServiceNodes{ structs.CheckServiceNode{ Node: &structs.Node{ ID: "test1", Node: "test1", Address: "10.20.1.1", Datacenter: "dc2", }, Service: structs.TestNodeService(t), }, structs.CheckServiceNode{ Node: &structs.Node{ ID: "test2", Node: "test2", Address: "10.20.1.2", Datacenter: "dc2", }, Service: structs.TestNodeService(t), }, } } func TestUpstreamNodesAlternate(t testing.T) structs.CheckServiceNodes { return structs.CheckServiceNodes{ structs.CheckServiceNode{ Node: &structs.Node{ ID: "alt-test1", Node: "alt-test1", Address: "10.20.1.1", Datacenter: "dc1", }, Service: structs.TestNodeService(t), }, structs.CheckServiceNode{ Node: &structs.Node{ ID: "alt-test2", Node: "alt-test2", Address: "10.20.1.2", Datacenter: "dc1", }, Service: structs.TestNodeService(t), }, } } func TestGatewayNodesDC2(t testing.T) structs.CheckServiceNodes { return structs.CheckServiceNodes{ structs.CheckServiceNode{ Node: &structs.Node{ ID: "mesh-gateway-1", Node: "mesh-gateway", Address: "10.0.1.1", Datacenter: "dc2", }, Service: structs.TestNodeServiceMeshGatewayWithAddrs(t, "10.0.1.1", 8443, structs.ServiceAddress{Address: "10.0.1.1", Port: 8443}, structs.ServiceAddress{Address: "198.18.1.1", Port: 443}), }, structs.CheckServiceNode{ Node: &structs.Node{ ID: "mesh-gateway-2", Node: "mesh-gateway", Address: "10.0.1.2", Datacenter: "dc2", }, Service: structs.TestNodeServiceMeshGatewayWithAddrs(t, "10.0.1.2", 8443, structs.ServiceAddress{Address: "10.0.1.2", Port: 8443}, structs.ServiceAddress{Address: "198.18.1.2", Port: 443}), }, } } func TestGatewayServiceGroupBarDC1(t testing.T) structs.CheckServiceNodes { return structs.CheckServiceNodes{ structs.CheckServiceNode{ Node: &structs.Node{ ID: "bar-node-1", Node: "bar-node-1", Address: "10.1.1.4", Datacenter: "dc1", }, Service: &structs.NodeService{ Kind: structs.ServiceKindConnectProxy, Service: "bar-sidecar-proxy", Address: "172.16.1.6", Port: 2222, Meta: map[string]string{ "version": "1", }, Proxy: structs.ConnectProxyConfig{ DestinationServiceName: "bar", Upstreams: structs.TestUpstreams(t), }, }, }, structs.CheckServiceNode{ Node: &structs.Node{ ID: "bar-node-2", Node: "bar-node-2", Address: "10.1.1.5", Datacenter: "dc1", }, Service: &structs.NodeService{ Kind: structs.ServiceKindConnectProxy, Service: "bar-sidecar-proxy", Address: "172.16.1.7", Port: 2222, Meta: map[string]string{ "version": "1", }, Proxy: structs.ConnectProxyConfig{ DestinationServiceName: "bar", Upstreams: structs.TestUpstreams(t), }, }, }, structs.CheckServiceNode{ Node: &structs.Node{ ID: "bar-node-3", Node: "bar-node-3", Address: "10.1.1.6", Datacenter: "dc1", }, Service: &structs.NodeService{ Kind: structs.ServiceKindConnectProxy, Service: "bar-sidecar-proxy", Address: "172.16.1.8", Port: 2222, Meta: map[string]string{ "version": "2", }, Proxy: structs.ConnectProxyConfig{ DestinationServiceName: "bar", Upstreams: structs.TestUpstreams(t), }, }, }, } } func TestGatewayServiceGroupFooDC1(t testing.T) structs.CheckServiceNodes { return structs.CheckServiceNodes{ structs.CheckServiceNode{ Node: &structs.Node{ ID: "foo-node-1", Node: "foo-node-1", Address: "10.1.1.1", Datacenter: "dc1", }, Service: &structs.NodeService{ Kind: structs.ServiceKindConnectProxy, Service: "foo-sidecar-proxy", Address: "172.16.1.3", Port: 2222, Meta: map[string]string{ "version": "1", }, Proxy: structs.ConnectProxyConfig{ DestinationServiceName: "foo", Upstreams: structs.TestUpstreams(t), }, }, }, structs.CheckServiceNode{ Node: &structs.Node{ ID: "foo-node-2", Node: "foo-node-2", Address: "10.1.1.2", Datacenter: "dc1", }, Service: &structs.NodeService{ Kind: structs.ServiceKindConnectProxy, Service: "foo-sidecar-proxy", Address: "172.16.1.4", Port: 2222, Meta: map[string]string{ "version": "1", }, Proxy: structs.ConnectProxyConfig{ DestinationServiceName: "foo", Upstreams: structs.TestUpstreams(t), }, }, }, structs.CheckServiceNode{ Node: &structs.Node{ ID: "foo-node-3", Node: "foo-node-3", Address: "10.1.1.3", Datacenter: "dc1", }, Service: &structs.NodeService{ Kind: structs.ServiceKindConnectProxy, Service: "foo-sidecar-proxy", Address: "172.16.1.5", Port: 2222, Meta: map[string]string{ "version": "2", }, Proxy: structs.ConnectProxyConfig{ DestinationServiceName: "foo", Upstreams: structs.TestUpstreams(t), }, }, }, structs.CheckServiceNode{ Node: &structs.Node{ ID: "foo-node-4", Node: "foo-node-4", Address: "10.1.1.7", Datacenter: "dc1", }, Service: &structs.NodeService{ Kind: structs.ServiceKindConnectProxy, Service: "foo-sidecar-proxy", Address: "172.16.1.9", Port: 2222, Meta: map[string]string{ "version": "2", }, Proxy: structs.ConnectProxyConfig{ DestinationServiceName: "foo", Upstreams: structs.TestUpstreams(t), }, }, Checks: structs.HealthChecks{ &structs.HealthCheck{ Node: "foo-node-4", ServiceName: "foo-sidecar-proxy", Name: "proxy-alive", Status: "warning", }, }, }, } } // TestConfigSnapshot returns a fully populated snapshot func TestConfigSnapshot(t testing.T) *ConfigSnapshot { roots, leaf := TestCerts(t) return &ConfigSnapshot{ Kind: structs.ServiceKindConnectProxy, Service: "web-sidecar-proxy", ProxyID: "web-sidecar-proxy", Address: "0.0.0.0", Port: 9999, Proxy: structs.ConnectProxyConfig{ DestinationServiceID: "web", DestinationServiceName: "web", LocalServiceAddress: "127.0.0.1", LocalServicePort: 8080, Config: map[string]interface{}{ "foo": "bar", }, Upstreams: structs.TestUpstreams(t), }, Roots: roots, ConnectProxy: configSnapshotConnectProxy{ Leaf: leaf, UpstreamEndpoints: map[string]structs.CheckServiceNodes{ "db": TestUpstreamNodes(t), }, }, Datacenter: "dc1", } } // TestConfigSnapshotDiscoveryChain returns a fully populated snapshot using a discovery chain func TestConfigSnapshotDiscoveryChain(t testing.T) *ConfigSnapshot { return testConfigSnapshotDiscoveryChain(t, "simple") } func TestConfigSnapshotDiscoveryChainWithFailover(t testing.T) *ConfigSnapshot { return testConfigSnapshotDiscoveryChain(t, "failover") } func TestConfigSnapshotDiscoveryChain_SplitterWithResolverRedirectMultiDC(t testing.T) *ConfigSnapshot { return testConfigSnapshotDiscoveryChain(t, "splitter-with-resolver-redirect-multidc") } func TestConfigSnapshotDiscoveryChainWithEntries(t testing.T, additionalEntries ...structs.ConfigEntry) *ConfigSnapshot { return testConfigSnapshotDiscoveryChain(t, "simple", additionalEntries...) } func testConfigSnapshotDiscoveryChain(t testing.T, variation string, additionalEntries ...structs.ConfigEntry) *ConfigSnapshot { roots, leaf := TestCerts(t) // Compile a chain. var entries []structs.ConfigEntry switch variation { case "simple": entries = append(entries, &structs.ServiceResolverConfigEntry{ Kind: structs.ServiceResolver, Name: "db", ConnectTimeout: 33 * time.Second, }, ) case "failover": entries = append(entries, &structs.ServiceResolverConfigEntry{ Kind: structs.ServiceResolver, Name: "db", ConnectTimeout: 33 * time.Second, Failover: map[string]structs.ServiceResolverFailover{ "*": { Service: "fail", }, }, }, ) case "splitter-with-resolver-redirect-multidc": entries = append(entries, &structs.ProxyConfigEntry{ Kind: structs.ProxyDefaults, Name: structs.ProxyConfigGlobal, Config: map[string]interface{}{ "protocol": "http", }, }, &structs.ServiceSplitterConfigEntry{ Kind: structs.ServiceResolver, Name: "db", Splits: []structs.ServiceSplit{ {Weight: 50, Service: "db-dc1"}, {Weight: 50, Service: "db-dc2"}, }, }, &structs.ServiceResolverConfigEntry{ Kind: structs.ServiceResolver, Name: "db-dc1", Redirect: &structs.ServiceResolverRedirect{ Service: "db", ServiceSubset: "v1", Datacenter: "dc1", }, }, &structs.ServiceResolverConfigEntry{ Kind: structs.ServiceResolver, Name: "db-dc2", Redirect: &structs.ServiceResolverRedirect{ Service: "db", ServiceSubset: "v2", Datacenter: "dc2", }, }, &structs.ServiceResolverConfigEntry{ Kind: structs.ServiceResolver, Name: "db", Subsets: map[string]structs.ServiceResolverSubset{ "v1": structs.ServiceResolverSubset{ Filter: "Service.Meta.version == v1", }, "v2": structs.ServiceResolverSubset{ Filter: "Service.Meta.version == v2", }, }, }, ) default: t.Fatalf("unexpected variation: %q", variation) return nil } if len(additionalEntries) > 0 { entries = append(entries, additionalEntries...) } dbChain := discoverychain.TestCompileConfigEntries(t, "db", "default", "dc1", entries...) dbTarget := structs.DiscoveryTarget{ Service: "db", Namespace: "default", Datacenter: "dc1", } failTarget := structs.DiscoveryTarget{ Service: "fail", Namespace: "default", Datacenter: "dc1", } snap := &ConfigSnapshot{ Kind: structs.ServiceKindConnectProxy, Service: "web-sidecar-proxy", ProxyID: "web-sidecar-proxy", Address: "0.0.0.0", Port: 9999, Proxy: structs.ConnectProxyConfig{ DestinationServiceID: "web", DestinationServiceName: "web", LocalServiceAddress: "127.0.0.1", LocalServicePort: 8080, Config: map[string]interface{}{ "foo": "bar", }, Upstreams: structs.TestUpstreams(t), }, Roots: roots, ConnectProxy: configSnapshotConnectProxy{ Leaf: leaf, DiscoveryChain: map[string]*structs.CompiledDiscoveryChain{ "db": dbChain, }, WatchedUpstreamEndpoints: map[string]map[structs.DiscoveryTarget]structs.CheckServiceNodes{ "db": map[structs.DiscoveryTarget]structs.CheckServiceNodes{ dbTarget: TestUpstreamNodes(t), }, }, }, Datacenter: "dc1", } switch variation { case "simple": case "failover": snap.ConnectProxy.WatchedUpstreamEndpoints["db"][failTarget] = TestUpstreamNodesAlternate(t) case "splitter-with-resolver-redirect-multidc": dbTarget_v1_dc1 := structs.DiscoveryTarget{ Service: "db", ServiceSubset: "v1", Namespace: "default", Datacenter: "dc1", } dbTarget_v2_dc2 := structs.DiscoveryTarget{ Service: "db", ServiceSubset: "v2", Namespace: "default", Datacenter: "dc2", } snap.ConnectProxy.WatchedUpstreamEndpoints["db"] = map[structs.DiscoveryTarget]structs.CheckServiceNodes{ dbTarget_v1_dc1: TestUpstreamNodes(t), dbTarget_v2_dc2: TestUpstreamNodesDC2(t), } default: t.Fatalf("unexpected variation: %q", variation) return nil } return snap } func TestConfigSnapshotMeshGateway(t testing.T) *ConfigSnapshot { roots, _ := TestCerts(t) return &ConfigSnapshot{ Kind: structs.ServiceKindMeshGateway, Service: "mesh-gateway", ProxyID: "mesh-gateway", Address: "1.2.3.4", Port: 8443, Proxy: structs.ConnectProxyConfig{ Config: map[string]interface{}{}, }, TaggedAddresses: map[string]structs.ServiceAddress{ "lan": structs.ServiceAddress{ Address: "1.2.3.4", Port: 8443, }, "wan": structs.ServiceAddress{ Address: "198.18.0.1", Port: 443, }, }, Roots: roots, Datacenter: "dc1", MeshGateway: configSnapshotMeshGateway{ WatchedServices: map[string]context.CancelFunc{ "foo": nil, "bar": nil, }, WatchedDatacenters: map[string]context.CancelFunc{ "dc2": nil, }, ServiceGroups: map[string]structs.CheckServiceNodes{ "foo": TestGatewayServiceGroupFooDC1(t), "bar": TestGatewayServiceGroupBarDC1(t), }, GatewayGroups: map[string]structs.CheckServiceNodes{ "dc2": TestGatewayNodesDC2(t), }, }, } } // ControllableCacheType is a cache.Type that simulates a typical blocking RPC // but lets us control the responses and when they are delivered easily. type ControllableCacheType struct { index uint64 value sync.Map // Need a condvar to trigger all blocking requests (there might be multiple // for same type due to background refresh and timing issues) when values // change. Chans make it nondeterministic which one triggers or need extra // locking to coordinate replacing after close etc. triggerMu sync.Mutex trigger *sync.Cond blocking bool lastReq atomic.Value } // NewControllableCacheType returns a cache.Type that can be controlled for // testing. func NewControllableCacheType(t testing.T) *ControllableCacheType { c := &ControllableCacheType{ index: 5, blocking: true, } c.trigger = sync.NewCond(&c.triggerMu) return c } // Set sets the response value to be returned from subsequent cache gets for the // type. func (ct *ControllableCacheType) Set(key string, value interface{}) { atomic.AddUint64(&ct.index, 1) ct.value.Store(key, value) ct.triggerMu.Lock() ct.trigger.Broadcast() ct.triggerMu.Unlock() } // Fetch implements cache.Type. It simulates blocking or non-blocking queries. func (ct *ControllableCacheType) Fetch(opts cache.FetchOptions, req cache.Request) (cache.FetchResult, error) { index := atomic.LoadUint64(&ct.index) ct.lastReq.Store(req) shouldBlock := ct.blocking && opts.MinIndex > 0 && opts.MinIndex == index if shouldBlock { // Wait for return to be triggered. We ignore timeouts based on opts.Timeout // since in practice they will always be way longer than our tests run for // and the caller can simulate timeout by triggering return without changing // index or value. ct.triggerMu.Lock() ct.trigger.Wait() ct.triggerMu.Unlock() } info := req.CacheInfo() key := path.Join(info.Key, info.Datacenter) // omit token for testing purposes // reload index as it probably got bumped index = atomic.LoadUint64(&ct.index) val, _ := ct.value.Load(key) if err, ok := val.(error); ok { return cache.FetchResult{ Value: nil, Index: index, }, err } return cache.FetchResult{ Value: val, Index: index, }, nil } // SupportsBlocking implements cache.Type func (ct *ControllableCacheType) SupportsBlocking() bool { return ct.blocking }