diff --git a/tailnet/test/integration/integration.go b/tailnet/test/integration/integration.go new file mode 100644 index 0000000000000..993142dd0e59f --- /dev/null +++ b/tailnet/test/integration/integration.go @@ -0,0 +1,128 @@ +package integration + +import ( + "context" + "encoding/json" + "io" + "net/http" + "net/http/httptest" + "net/netip" + "strings" + "sync/atomic" + "testing" + "time" + + "github.com/google/uuid" + "github.com/stretchr/testify/require" + "golang.org/x/xerrors" + "nhooyr.io/websocket" + "tailscale.com/tailcfg" + + "cdr.dev/slog" + "github.com/coder/coder/v2/coderd/httpapi" + "github.com/coder/coder/v2/codersdk" + "github.com/coder/coder/v2/tailnet" + "github.com/coder/coder/v2/testutil" +) + +func NetworkSetupDefault(*testing.T) {} + +func DERPMapTailscale(ctx context.Context, t *testing.T) *tailcfg.DERPMap { + ctx, cancel := context.WithTimeout(ctx, testutil.WaitShort) + defer cancel() + + req, err := http.NewRequestWithContext(ctx, "GET", "https://controlplane.tailscale.com/derpmap/default", nil) + require.NoError(t, err) + + res, err := http.DefaultClient.Do(req) + require.NoError(t, err) + defer res.Body.Close() + + dm := &tailcfg.DERPMap{} + dec := json.NewDecoder(res.Body) + err = dec.Decode(dm) + require.NoError(t, err) + + return dm +} + +func CoordinatorInMemory(t *testing.T, logger slog.Logger, dm *tailcfg.DERPMap) (coord tailnet.Coordinator, url string) { + coord = tailnet.NewCoordinator(logger) + var coordPtr atomic.Pointer[tailnet.Coordinator] + coordPtr.Store(&coord) + t.Cleanup(func() { _ = coord.Close() }) + + csvc, err := tailnet.NewClientService(logger, &coordPtr, 10*time.Minute, func() *tailcfg.DERPMap { + return dm + }) + require.NoError(t, err) + + srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { + idStr := strings.TrimPrefix(r.URL.Path, "/") + id, err := uuid.Parse(idStr) + if err != nil { + httpapi.Write(r.Context(), w, http.StatusBadRequest, codersdk.Response{ + Message: "Bad agent id.", + Detail: err.Error(), + }) + return + } + + conn, err := websocket.Accept(w, r, nil) + if err != nil { + httpapi.Write(r.Context(), w, http.StatusBadRequest, codersdk.Response{ + Message: "Failed to accept websocket.", + Detail: err.Error(), + }) + return + } + + ctx, wsNetConn := codersdk.WebsocketNetConn(r.Context(), conn, websocket.MessageBinary) + defer wsNetConn.Close() + + err = csvc.ServeConnV2(ctx, wsNetConn, tailnet.StreamID{ + Name: "client-" + id.String(), + ID: id, + Auth: tailnet.SingleTailnetCoordinateeAuth{}, + }) + if err != nil && !xerrors.Is(err, io.EOF) && !xerrors.Is(err, context.Canceled) { + _ = conn.Close(websocket.StatusInternalError, err.Error()) + return + } + })) + t.Cleanup(srv.Close) + + return coord, srv.URL +} + +func TailnetSetupDRPC(ctx context.Context, t *testing.T, logger slog.Logger, + id, agentID uuid.UUID, + coordinateURL string, + dm *tailcfg.DERPMap, +) *tailnet.Conn { + ip := tailnet.IPFromUUID(id) + conn, err := tailnet.NewConn(&tailnet.Options{ + Addresses: []netip.Prefix{netip.PrefixFrom(ip, 128)}, + DERPMap: dm, + Logger: logger, + }) + require.NoError(t, err) + t.Cleanup(func() { _ = conn.Close() }) + + //nolint:bodyclose + ws, _, err := websocket.Dial(ctx, coordinateURL+"/"+id.String(), nil) + require.NoError(t, err) + + client, err := tailnet.NewDRPCClient( + websocket.NetConn(ctx, ws, websocket.MessageBinary), + logger, + ) + require.NoError(t, err) + + coord, err := client.Coordinate(ctx) + require.NoError(t, err) + + coordination := tailnet.NewRemoteCoordination(logger, coord, conn, agentID) + t.Cleanup(func() { _ = coordination.Close() }) + return conn +} diff --git a/tailnet/test/integration/integration_internal_test.go b/tailnet/test/integration/integration_internal_test.go new file mode 100644 index 0000000000000..07ba30bd84738 --- /dev/null +++ b/tailnet/test/integration/integration_internal_test.go @@ -0,0 +1,194 @@ +package integration + +import ( + "context" + "flag" + "fmt" + "os" + "os/exec" + "strconv" + "syscall" + "testing" + + "github.com/google/uuid" + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" + "tailscale.com/tailcfg" + + "cdr.dev/slog" + "cdr.dev/slog/sloggers/slogtest" + "github.com/coder/coder/v2/tailnet" + "github.com/coder/coder/v2/testutil" +) + +var ( + isChild = flag.Bool("child", false, "Run tests as a child") + childTestID = flag.Int("child-test-id", 0, "Which test is being run") + childCoordinateURL = flag.String("child-coordinate-url", "", "The coordinate url to connect back to") + childAgentID = flag.String("child-agent-id", "", "The agent id of the child") +) + +func TestMain(m *testing.M) { + if run := os.Getenv("CODER_TAILNET_TESTS"); run == "" { + _, _ = fmt.Println("skipping tests...") + return + } + if os.Getuid() != 0 { + _, _ = fmt.Println("networking integration tests must run as root") + return + } + flag.Parse() + os.Exit(m.Run()) +} + +var tests = []Test{{ + Name: "Normal", + DERPMap: DERPMapTailscale, + Coordinator: CoordinatorInMemory, + Parent: Parent{ + NetworkSetup: NetworkSetupDefault, + TailnetSetup: TailnetSetupDRPC, + Run: func(ctx context.Context, t *testing.T, opts ParentOpts) { + reach := opts.Conn.AwaitReachable(ctx, tailnet.IPFromUUID(opts.AgentID)) + assert.True(t, reach) + }, + }, + Child: Child{ + NetworkSetup: NetworkSetupDefault, + TailnetSetup: TailnetSetupDRPC, + Run: func(ctx context.Context, t *testing.T, opts ChildOpts) { + // wait until the parent kills us + <-make(chan struct{}) + }, + }, +}} + +//nolint:paralleltest +func TestIntegration(t *testing.T) { + if *isChild { + logger := slogtest.Make(t, nil).Leveled(slog.LevelDebug) + ctx, cancel := context.WithTimeout(context.Background(), testutil.WaitSuperLong) + t.Cleanup(cancel) + + agentID, err := uuid.Parse(*childAgentID) + require.NoError(t, err) + + test := tests[*childTestID] + test.Child.NetworkSetup(t) + dm := test.DERPMap(ctx, t) + conn := test.Child.TailnetSetup(ctx, t, logger, agentID, uuid.Nil, *childCoordinateURL, dm) + test.Child.Run(ctx, t, ChildOpts{ + Logger: logger, + Conn: conn, + AgentID: agentID, + }) + return + } + + for id, test := range tests { + t.Run(test.Name, func(t *testing.T) { + ctx, cancel := context.WithTimeout(context.Background(), testutil.WaitSuperLong) + t.Cleanup(cancel) + + logger := slogtest.Make(t, nil).Leveled(slog.LevelDebug) + parentID, childID := uuid.New(), uuid.New() + dm := test.DERPMap(ctx, t) + _, coordURL := test.Coordinator(t, logger, dm) + + child, waitChild := execChild(ctx, id, coordURL, childID) + test.Parent.NetworkSetup(t) + conn := test.Parent.TailnetSetup(ctx, t, logger, parentID, childID, coordURL, dm) + test.Parent.Run(ctx, t, ParentOpts{ + Logger: logger, + Conn: conn, + ClientID: parentID, + AgentID: childID, + }) + child.Process.Signal(syscall.SIGINT) + <-waitChild + }) + } +} + +type Test struct { + // Name is the name of the test. + Name string + + // DERPMap returns the DERP map to use for both the parent and child. It is + // called once at the beginning of the test. + DERPMap func(ctx context.Context, t *testing.T) *tailcfg.DERPMap + // Coordinator returns a running tailnet coordinator, and the url to reach + // it on. + Coordinator func(t *testing.T, logger slog.Logger, dm *tailcfg.DERPMap) (coord tailnet.Coordinator, url string) + + Parent Parent + Child Child +} + +// Parent is the struct containing all of the parent specific configurations. +// Functions are invoked in order of struct definition. +type Parent struct { + // NetworkSetup is run before all test code. It can be used to setup + // networking scenarios. + NetworkSetup func(t *testing.T) + + // TailnetSetup creates a tailnet network. + TailnetSetup func( + ctx context.Context, t *testing.T, logger slog.Logger, + id, agentID uuid.UUID, coordURL string, dm *tailcfg.DERPMap, + ) *tailnet.Conn + + Run func(ctx context.Context, t *testing.T, opts ParentOpts) +} + +// Child is the struct containing all of the child specific configurations. +// Functions are invoked in order of struct definition. +type Child struct { + // NetworkSetup is run before all test code. It can be used to setup + // networking scenarios. + NetworkSetup func(t *testing.T) + + // TailnetSetup creates a tailnet network. + TailnetSetup func( + ctx context.Context, t *testing.T, logger slog.Logger, + id, agentID uuid.UUID, coordURL string, dm *tailcfg.DERPMap, + ) *tailnet.Conn + + // Run runs the actual test. Parents and children run in separate processes, + // so it's important to ensure no communication happens over memory between + // run functions of parents and children. + Run func(ctx context.Context, t *testing.T, opts ChildOpts) +} + +type ParentOpts struct { + Logger slog.Logger + Conn *tailnet.Conn + ClientID uuid.UUID + AgentID uuid.UUID +} + +type ChildOpts struct { + Logger slog.Logger + Conn *tailnet.Conn + AgentID uuid.UUID +} + +func execChild(ctx context.Context, testID int, coordURL string, agentID uuid.UUID) (*exec.Cmd, <-chan error) { + ch := make(chan error) + binary := os.Args[0] + args := os.Args[1:] + args = append(args, + "--child=true", + "--child-test-id="+strconv.Itoa(testID), + "--child-coordinate-url="+coordURL, + "--child-agent-id="+agentID.String(), + ) + + cmd := exec.CommandContext(ctx, binary, args...) + cmd.Stdout = os.Stdout + cmd.Stderr = os.Stderr + go func() { + ch <- cmd.Run() + }() + return cmd, ch +} pFad - Phonifier reborn

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