threshold/testing/internal/e2e/tests/static/connect_localhost_test.go

package static_test

import (
	"context"
	"encoding/json"
	"errors"
	"fmt"
	"strings"
	"testing"
	"time"

	"github.com/cenkalti/backoff/v4"
	"github.com/hashicorp/boundary/api/sessions"
	"github.com/hashicorp/boundary/testing/internal/e2e"
	"github.com/hashicorp/boundary/testing/internal/e2e/boundary"
	"github.com/stretchr/testify/require"
)

func TestCliConnectTargetWithLocalhost(t *testing.T) {
	e2e.MaybeSkipTest(t)
	c, err := loadConfig()
	require.NoError(t, err)

	ctx := context.Background()
	boundary.AuthenticateAdminCli(t, ctx)
	newOrgId := boundary.CreateNewOrgCli(t, ctx)
	t.Cleanup(func() {
		ctx := context.Background()
		boundary.AuthenticateAdminCli(t, ctx)
		output := e2e.RunCommand(ctx, "boundary", e2e.WithArgs("scopes", "delete", "-id", newOrgId))
		require.NoError(t, output.Err, string(output.Stderr))
	})
	newProjectId := boundary.CreateNewProjectCli(t, ctx, newOrgId)
	newHostCatalogId := boundary.CreateNewHostCatalogCli(t, ctx, newProjectId)
	newHostSetId := boundary.CreateNewHostSetCli(t, ctx, newHostCatalogId)
	newHostId := boundary.CreateNewHostCli(t, ctx, newHostCatalogId, c.TargetIp)
	boundary.AddHostToHostSetCli(t, ctx, newHostSetId, newHostId)
	newTargetId := boundary.CreateNewTargetCli(t, ctx, newProjectId, c.TargetPort)
	boundary.AddHostSourceToTargetCli(t, ctx, newTargetId, newHostSetId)

	// Start a session
	ctxCancel, cancel := context.WithCancel(context.Background())
	port := "12345"
	cmdChan := make(chan *e2e.CommandResult)
	go func() {
		t.Log("Starting session...")
		cmdChan <- e2e.RunCommand(ctxCancel, "boundary",
			e2e.WithArgs(
				"connect",
				"-target-id", newTargetId,
				"-listen-port", port,
				"-format", "json",
			),
		)
	}()
	t.Cleanup(cancel)

	// Wait for session to appear
	t.Log("Waiting for session to appear...")
	err = backoff.RetryNotify(
		func() error {
			output := e2e.RunCommand(ctx, "boundary",
				e2e.WithArgs("sessions", "list", "-scope-id", newProjectId, "-format", "json"),
			)
			if output.Err != nil {
				return backoff.Permanent(errors.New(string(output.Stderr)))
			}

			var sessionListResult sessions.SessionListResult
			err := json.Unmarshal(output.Stdout, &sessionListResult)
			if err != nil {
				return backoff.Permanent(err)
			}

			sessionCount := len(sessionListResult.Items)
			if sessionCount == 0 {
				return errors.New("No items are appearing in the session list")
			}

			t.Logf("Found %d session(s)", sessionCount)
			if sessionCount != 1 {
				return backoff.Permanent(errors.New("Only one session was expected to be found"))
			}

			return nil
		},
		backoff.WithMaxRetries(backoff.NewConstantBackOff(3*time.Second), 5),
		func(err error, td time.Duration) {
			t.Logf("%s. Retrying...", err.Error())
		},
	)
	require.NoError(t, err)

	// Connect to target and print host's IP address
	output := e2e.RunCommand(ctx, "ssh",
		e2e.WithArgs(
			"localhost",
			"-p", port,
			"-l", c.TargetSshUser,
			"-i", c.TargetSshKeyPath,
			"-o", "UserKnownHostsFile=/dev/null",
			"-o", "StrictHostKeyChecking=no",
			"-o", "IdentitiesOnly=yes", // forces the use of the provided key
			"hostname -i",
		),
	)
	require.NoError(t, output.Err, string(output.Stderr))
	require.Equal(t, c.TargetIp, strings.TrimSpace(string(output.Stdout)))

	// Cancel session
	cancel()

	// Check output from session
	select {
	case output := <-cmdChan:
		type connectOutput struct {
			Port int
		}
		var response connectOutput
		err = json.Unmarshal(output.Stdout, &response)
		require.NoError(t, err)
		require.Equal(t, port, fmt.Sprint(response.Port))
	case <-time.After(time.Second * 5):
		t.Fatal("Timed out waiting for session command to exit")
	}
}