mirror of https://github.com/hashicorp/consul
468 lines
14 KiB
Go
468 lines
14 KiB
Go
package bootstrap
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import (
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"context"
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"crypto/tls"
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"crypto/x509"
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"fmt"
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"net/http/httptest"
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"os"
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"path/filepath"
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"testing"
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"github.com/hashicorp/consul/agent/config"
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"github.com/hashicorp/consul/agent/hcp"
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"github.com/hashicorp/consul/lib"
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"github.com/hashicorp/consul/tlsutil"
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"github.com/hashicorp/go-uuid"
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"github.com/mitchellh/cli"
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"github.com/stretchr/testify/require"
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)
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func TestBootstrapConfigLoader(t *testing.T) {
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baseLoader := func(source config.Source) (config.LoadResult, error) {
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return config.Load(config.LoadOpts{
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DefaultConfig: source,
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HCL: []string{
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`server = true`,
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`bind_addr = "127.0.0.1"`,
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`data_dir = "/tmp/consul-data"`,
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},
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})
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}
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bootstrapLoader := func(source config.Source) (config.LoadResult, error) {
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return bootstrapConfigLoader(baseLoader, &RawBootstrapConfig{
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ConfigJSON: `{"bootstrap_expect": 8}`,
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ManagementToken: "test-token",
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})(source)
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}
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result, err := bootstrapLoader(nil)
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require.NoError(t, err)
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// bootstrap_expect and management token are injected from bootstrap config received from HCP.
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require.Equal(t, 8, result.RuntimeConfig.BootstrapExpect)
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require.Equal(t, "test-token", result.RuntimeConfig.Cloud.ManagementToken)
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// Response header is always injected from a constant.
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require.Equal(t, "x-consul-default-acl-policy", result.RuntimeConfig.HTTPResponseHeaders[accessControlHeaderName])
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}
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func Test_finalizeRuntimeConfig(t *testing.T) {
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type testCase struct {
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rc *config.RuntimeConfig
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cfg *RawBootstrapConfig
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verifyFn func(t *testing.T, rc *config.RuntimeConfig)
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}
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run := func(t *testing.T, tc testCase) {
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finalizeRuntimeConfig(tc.rc, tc.cfg)
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tc.verifyFn(t, tc.rc)
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}
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tt := map[string]testCase{
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"set header if not present": {
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rc: &config.RuntimeConfig{},
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cfg: &RawBootstrapConfig{
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ManagementToken: "test-token",
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},
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verifyFn: func(t *testing.T, rc *config.RuntimeConfig) {
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require.Equal(t, "test-token", rc.Cloud.ManagementToken)
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require.Equal(t, "x-consul-default-acl-policy", rc.HTTPResponseHeaders[accessControlHeaderName])
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},
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},
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"append to header if present": {
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rc: &config.RuntimeConfig{
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HTTPResponseHeaders: map[string]string{
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accessControlHeaderName: "Content-Encoding",
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},
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},
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cfg: &RawBootstrapConfig{
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ManagementToken: "test-token",
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},
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verifyFn: func(t *testing.T, rc *config.RuntimeConfig) {
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require.Equal(t, "test-token", rc.Cloud.ManagementToken)
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require.Equal(t, "Content-Encoding,x-consul-default-acl-policy", rc.HTTPResponseHeaders[accessControlHeaderName])
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},
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},
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}
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for name, tc := range tt {
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t.Run(name, func(t *testing.T) {
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run(t, tc)
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})
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}
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}
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func boolPtr(value bool) *bool {
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return &value
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}
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func TestLoadConfig_Persistence(t *testing.T) {
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type testCase struct {
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// resourceID is the HCP resource ID. If set, a server is considered to be cloud-enabled.
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resourceID string
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// devMode indicates whether the loader should not have a data directory.
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devMode bool
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// verifyFn issues case-specific assertions.
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verifyFn func(t *testing.T, rc *config.RuntimeConfig)
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}
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run := func(t *testing.T, tc testCase) {
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dir, err := os.MkdirTemp(os.TempDir(), "bootstrap-test-")
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require.NoError(t, err)
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t.Cleanup(func() { os.RemoveAll(dir) })
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s := hcp.NewMockHCPServer()
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s.AddEndpoint(TestEndpoint())
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// Use an HTTPS server since that's what the HCP SDK expects for auth.
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srv := httptest.NewTLSServer(s)
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defer srv.Close()
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caCert, err := x509.ParseCertificate(srv.TLS.Certificates[0].Certificate[0])
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require.NoError(t, err)
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pool := x509.NewCertPool()
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pool.AddCert(caCert)
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clientTLS := &tls.Config{RootCAs: pool}
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baseOpts := config.LoadOpts{
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HCL: []string{
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`server = true`,
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`bind_addr = "127.0.0.1"`,
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fmt.Sprintf(`http_config = { response_headers = { %s = "Content-Encoding" } }`, accessControlHeaderName),
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fmt.Sprintf(`cloud { client_id="test" client_secret="test" hostname=%q auth_url=%q resource_id=%q }`,
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srv.Listener.Addr().String(), srv.URL, tc.resourceID),
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},
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}
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if tc.devMode {
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baseOpts.DevMode = boolPtr(true)
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} else {
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baseOpts.HCL = append(baseOpts.HCL, fmt.Sprintf(`data_dir = %q`, dir))
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}
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baseLoader := func(source config.Source) (config.LoadResult, error) {
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baseOpts.DefaultConfig = source
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return config.Load(baseOpts)
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}
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ui := cli.NewMockUi()
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// Load initial config to check whether bootstrapping from HCP is enabled.
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initial, err := baseLoader(nil)
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require.NoError(t, err)
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// Override the client TLS config so that the test server can be trusted.
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initial.RuntimeConfig.Cloud.WithTLSConfig(clientTLS)
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client, err := hcp.NewClient(initial.RuntimeConfig.Cloud)
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require.NoError(t, err)
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loader, err := LoadConfig(context.Background(), client, initial.RuntimeConfig.DataDir, baseLoader, ui)
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require.NoError(t, err)
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// Load the agent config with the potentially wrapped loader.
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fromRemote, err := loader(nil)
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require.NoError(t, err)
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// HCP-enabled cases should fetch from HCP on the first run of LoadConfig.
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require.Contains(t, ui.OutputWriter.String(), "Fetching configuration from HCP")
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// Run case-specific verification.
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tc.verifyFn(t, fromRemote.RuntimeConfig)
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require.Empty(t, fromRemote.RuntimeConfig.ACLInitialManagementToken,
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"initial_management token should have been sanitized")
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if tc.devMode {
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// Re-running the bootstrap func below isn't relevant to dev mode
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// since they don't have a data directory to load data from.
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return
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}
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// Run LoadConfig again to exercise the logic of loading config from disk.
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loader, err = LoadConfig(context.Background(), client, initial.RuntimeConfig.DataDir, baseLoader, ui)
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require.NoError(t, err)
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fromDisk, err := loader(nil)
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require.NoError(t, err)
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// HCP-enabled cases should fetch from disk on the second run.
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require.Contains(t, ui.OutputWriter.String(), "Loaded HCP configuration from local disk")
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// Config loaded from disk should be the same as the one that was initially fetched from the HCP servers.
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require.Equal(t, fromRemote.RuntimeConfig, fromDisk.RuntimeConfig)
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}
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tt := map[string]testCase{
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"dev mode": {
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devMode: true,
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resourceID: "organization/0b9de9a3-8403-4ca6-aba8-fca752f42100/" +
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"project/0b9de9a3-8403-4ca6-aba8-fca752f42100/" +
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"consul.cluster/new-cluster-id",
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verifyFn: func(t *testing.T, rc *config.RuntimeConfig) {
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require.Empty(t, rc.DataDir)
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// Dev mode should have persisted certs since they can't be inlined.
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require.NotEmpty(t, rc.TLS.HTTPS.CertFile)
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require.NotEmpty(t, rc.TLS.HTTPS.KeyFile)
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require.NotEmpty(t, rc.TLS.HTTPS.CAFile)
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// Find the temporary directory they got stored in.
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dir := filepath.Dir(rc.TLS.HTTPS.CertFile)
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// Ensure we only stored the TLS materials.
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entries, err := os.ReadDir(dir)
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require.NoError(t, err)
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require.Len(t, entries, 3)
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haveFiles := make([]string, 3)
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for i, entry := range entries {
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haveFiles[i] = entry.Name()
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}
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wantFiles := []string{caFileName, certFileName, keyFileName}
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require.ElementsMatch(t, wantFiles, haveFiles)
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},
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},
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"new cluster": {
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resourceID: "organization/0b9de9a3-8403-4ca6-aba8-fca752f42100/" +
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"project/0b9de9a3-8403-4ca6-aba8-fca752f42100/" +
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"consul.cluster/new-cluster-id",
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// New clusters should have received and persisted the whole suite of config.
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verifyFn: func(t *testing.T, rc *config.RuntimeConfig) {
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dir := filepath.Join(rc.DataDir, subDir)
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entries, err := os.ReadDir(dir)
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require.NoError(t, err)
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require.Len(t, entries, 6)
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files := []string{
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filepath.Join(dir, configFileName),
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filepath.Join(dir, caFileName),
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filepath.Join(dir, certFileName),
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filepath.Join(dir, keyFileName),
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filepath.Join(dir, tokenFileName),
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filepath.Join(dir, successFileName),
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}
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for _, name := range files {
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_, err := os.Stat(name)
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require.NoError(t, err)
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}
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require.Equal(t, filepath.Join(dir, certFileName), rc.TLS.HTTPS.CertFile)
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require.Equal(t, filepath.Join(dir, keyFileName), rc.TLS.HTTPS.KeyFile)
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require.Equal(t, filepath.Join(dir, caFileName), rc.TLS.HTTPS.CAFile)
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cert, key, caCerts, err := loadCerts(dir)
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require.NoError(t, err)
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require.NoError(t, validateTLSCerts(cert, key, caCerts))
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},
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},
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"existing cluster": {
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resourceID: "organization/0b9de9a3-8403-4ca6-aba8-fca752f42100/" +
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"project/0b9de9a3-8403-4ca6-aba8-fca752f42100/" +
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"consul.cluster/" + TestExistingClusterID,
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// Existing clusters should have only received and persisted the management token.
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verifyFn: func(t *testing.T, rc *config.RuntimeConfig) {
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dir := filepath.Join(rc.DataDir, subDir)
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entries, err := os.ReadDir(dir)
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require.NoError(t, err)
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require.Len(t, entries, 3)
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files := []string{
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filepath.Join(dir, tokenFileName),
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filepath.Join(dir, successFileName),
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filepath.Join(dir, configFileName),
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}
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for _, name := range files {
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_, err := os.Stat(name)
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require.NoError(t, err)
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}
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},
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},
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}
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for name, tc := range tt {
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t.Run(name, func(t *testing.T) {
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run(t, tc)
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})
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}
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}
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func Test_loadPersistedBootstrapConfig(t *testing.T) {
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type expect struct {
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loaded bool
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warning string
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}
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type testCase struct {
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existingCluster bool
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mutateFn func(t *testing.T, dir string)
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expect expect
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}
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run := func(t *testing.T, tc testCase) {
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dataDir, err := os.MkdirTemp(os.TempDir(), "load-bootstrap-test-")
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require.NoError(t, err)
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t.Cleanup(func() { os.RemoveAll(dataDir) })
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dir := filepath.Join(dataDir, subDir)
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// Do some common setup as if we received config from HCP and persisted it to disk.
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require.NoError(t, lib.EnsurePath(dir, true))
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require.NoError(t, persistSucessMarker(dir))
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if !tc.existingCluster {
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caCert, caKey, err := tlsutil.GenerateCA(tlsutil.CAOpts{})
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require.NoError(t, err)
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serverCert, serverKey, err := testLeaf(caCert, caKey)
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require.NoError(t, err)
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require.NoError(t, persistTLSCerts(dir, serverCert, serverKey, []string{caCert}))
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cfgJSON := `{"bootstrap_expect": 8}`
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require.NoError(t, persistBootstrapConfig(dir, cfgJSON))
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}
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token, err := uuid.GenerateUUID()
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require.NoError(t, err)
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require.NoError(t, persistManagementToken(dir, token))
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// Optionally mutate the persisted data to trigger errors while loading.
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if tc.mutateFn != nil {
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tc.mutateFn(t, dir)
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}
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ui := cli.NewMockUi()
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cfg, loaded := loadPersistedBootstrapConfig(dataDir, ui)
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require.Equal(t, tc.expect.loaded, loaded, ui.ErrorWriter.String())
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if loaded {
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require.Equal(t, token, cfg.ManagementToken)
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require.Empty(t, ui.ErrorWriter.String())
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} else {
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require.Nil(t, cfg)
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require.Contains(t, ui.ErrorWriter.String(), tc.expect.warning)
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}
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}
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tt := map[string]testCase{
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"existing cluster with valid files": {
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existingCluster: true,
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// Don't mutate, files from setup are valid.
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mutateFn: nil,
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expect: expect{
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loaded: true,
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warning: "",
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},
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},
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"existing cluster missing token": {
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existingCluster: true,
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mutateFn: func(t *testing.T, dir string) {
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// Remove the token file while leaving the existing cluster marker.
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require.NoError(t, os.Remove(filepath.Join(dir, tokenFileName)))
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},
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expect: expect{
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loaded: false,
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warning: "configuration files on disk are incomplete",
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},
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},
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"existing cluster no files": {
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existingCluster: true,
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mutateFn: func(t *testing.T, dir string) {
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// Remove all files
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require.NoError(t, os.RemoveAll(dir))
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},
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expect: expect{
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loaded: false,
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// No warnings since we assume we need to fetch config from HCP for the first time.
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warning: "",
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},
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},
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"new cluster with valid files": {
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// Don't mutate, files from setup are valid.
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mutateFn: nil,
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expect: expect{
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loaded: true,
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warning: "",
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},
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},
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"new cluster some files": {
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mutateFn: func(t *testing.T, dir string) {
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// Remove one of the required files
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require.NoError(t, os.Remove(filepath.Join(dir, certFileName)))
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},
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expect: expect{
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loaded: false,
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warning: "configuration files on disk are incomplete",
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},
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},
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"new cluster no files": {
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mutateFn: func(t *testing.T, dir string) {
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// Remove all files
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require.NoError(t, os.RemoveAll(dir))
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},
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expect: expect{
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loaded: false,
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// No warnings since we assume we need to fetch config from HCP for the first time.
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warning: "",
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},
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},
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"new cluster invalid cert": {
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mutateFn: func(t *testing.T, dir string) {
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name := filepath.Join(dir, certFileName)
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require.NoError(t, os.WriteFile(name, []byte("not-a-cert"), 0600))
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},
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expect: expect{
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loaded: false,
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warning: "invalid server certificate",
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},
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},
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"new cluster invalid CA": {
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mutateFn: func(t *testing.T, dir string) {
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name := filepath.Join(dir, caFileName)
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require.NoError(t, os.WriteFile(name, []byte("not-a-ca-cert"), 0600))
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},
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expect: expect{
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loaded: false,
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warning: "invalid CA certificate",
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},
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},
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"new cluster invalid config flag": {
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mutateFn: func(t *testing.T, dir string) {
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name := filepath.Join(dir, configFileName)
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require.NoError(t, os.WriteFile(name, []byte(`{"not_a_consul_agent_config_field" = "zap"}`), 0600))
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},
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expect: expect{
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loaded: false,
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warning: "failed to parse local bootstrap config",
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},
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},
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"existing cluster invalid token": {
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existingCluster: true,
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mutateFn: func(t *testing.T, dir string) {
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name := filepath.Join(dir, tokenFileName)
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require.NoError(t, os.WriteFile(name, []byte("not-a-uuid"), 0600))
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},
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expect: expect{
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loaded: false,
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warning: "is not a valid UUID",
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},
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},
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}
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for name, tc := range tt {
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t.Run(name, func(t *testing.T) {
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run(t, tc)
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})
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}
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}
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