open-consul/agent/consul/leader_connect_ca_test.go

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package consul
import (
"context"
"crypto/x509"
"errors"
"fmt"
"testing"
"time"
"github.com/hashicorp/consul/agent/connect"
ca "github.com/hashicorp/consul/agent/connect/ca"
"github.com/hashicorp/consul/agent/consul/state"
"github.com/hashicorp/consul/agent/metadata"
"github.com/hashicorp/consul/agent/structs"
"github.com/hashicorp/consul/sdk/testutil"
"github.com/hashicorp/go-version"
"github.com/hashicorp/serf/serf"
"github.com/stretchr/testify/require"
)
// TODO(kyhavlov): replace with t.Deadline()
const CATestTimeout = 7 * time.Second
type mockCAServerDelegate struct {
t *testing.T
config *Config
store *state.Store
primaryRoot *structs.CARoot
callbackCh chan string
}
func NewMockCAServerDelegate(t *testing.T, config *Config) *mockCAServerDelegate {
delegate := &mockCAServerDelegate{
t: t,
config: config,
store: state.NewStateStore(nil),
primaryRoot: connect.TestCAWithTTL(t, nil, 1*time.Second),
callbackCh: make(chan string, 0),
}
delegate.store.CASetConfig(1, testCAConfig())
return delegate
}
func (m *mockCAServerDelegate) State() *state.Store {
return m.store
}
func (m *mockCAServerDelegate) IsLeader() bool {
return true
}
func (m *mockCAServerDelegate) CheckServers(datacenter string, fn func(*metadata.Server) bool) {
ver, _ := version.NewVersion("1.6.0")
fn(&metadata.Server{
Status: serf.StatusAlive,
Build: *ver,
})
}
func (m *mockCAServerDelegate) ApplyCARequest(req *structs.CARequest) (interface{}, error) {
return ca.ApplyCARequestToStore(m.store, req)
}
func (m *mockCAServerDelegate) createCAProvider(conf *structs.CAConfiguration) (ca.Provider, error) {
return &mockCAProvider{
callbackCh: m.callbackCh,
rootPEM: m.primaryRoot.RootCert,
}, nil
}
func (m *mockCAServerDelegate) forwardDC(method, dc string, args interface{}, reply interface{}) error {
switch method {
case "ConnectCA.Roots":
roots := reply.(*structs.IndexedCARoots)
roots.TrustDomain = connect.TestClusterID
roots.Roots = []*structs.CARoot{m.primaryRoot}
roots.ActiveRootID = m.primaryRoot.ID
case "ConnectCA.SignIntermediate":
r := reply.(*string)
*r = m.primaryRoot.RootCert
default:
return fmt.Errorf("received call to unsupported method %q", method)
}
m.callbackCh <- fmt.Sprintf("forwardDC/%s", method)
return nil
}
func (m *mockCAServerDelegate) generateCASignRequest(csr string) *structs.CASignRequest {
return &structs.CASignRequest{
Datacenter: m.config.PrimaryDatacenter,
CSR: csr,
}
}
func (m *mockCAServerDelegate) raftApply(t structs.MessageType, msg interface{}) (interface{}, error) {
if t == structs.ConnectCARequestType {
req := msg.(*structs.CARequest)
act, err := m.store.CARootSetCAS(1, req.Index, req.Roots)
require.NoError(m.t, err)
require.True(m.t, act)
act, err = m.store.CACheckAndSetConfig(1, req.Config.ModifyIndex, req.Config)
require.NoError(m.t, err)
require.True(m.t, act)
} else {
return nil, fmt.Errorf("got invalid MessageType %v", t)
}
m.callbackCh <- fmt.Sprintf("raftApply/%s", t)
return nil, nil
}
// mockCAProvider mocks an empty provider implementation with a channel in order to coordinate
// waiting for certain methods to be called.
type mockCAProvider struct {
callbackCh chan string
rootPEM string
}
func (m *mockCAProvider) Configure(cfg ca.ProviderConfig) error { return nil }
func (m *mockCAProvider) State() (map[string]string, error) { return nil, nil }
func (m *mockCAProvider) GenerateRoot() error { return nil }
func (m *mockCAProvider) ActiveRoot() (string, error) { return m.rootPEM, nil }
func (m *mockCAProvider) GenerateIntermediateCSR() (string, error) {
m.callbackCh <- "provider/GenerateIntermediateCSR"
return "", nil
}
func (m *mockCAProvider) SetIntermediate(intermediatePEM, rootPEM string) error {
m.callbackCh <- "provider/SetIntermediate"
return nil
}
func (m *mockCAProvider) ActiveIntermediate() (string, error) { return m.rootPEM, nil }
func (m *mockCAProvider) GenerateIntermediate() (string, error) { return "", nil }
func (m *mockCAProvider) Sign(*x509.CertificateRequest) (string, error) { return "", nil }
func (m *mockCAProvider) SignIntermediate(*x509.CertificateRequest) (string, error) { return "", nil }
func (m *mockCAProvider) CrossSignCA(*x509.Certificate) (string, error) { return "", nil }
func (m *mockCAProvider) SupportsCrossSigning() (bool, error) { return false, nil }
func (m *mockCAProvider) Cleanup(_ bool, _ map[string]interface{}) error { return nil }
func waitForCh(t *testing.T, ch chan string, expected string) {
select {
case op := <-ch:
if op != expected {
t.Fatalf("got unexpected op %q, wanted %q", op, expected)
}
case <-time.After(CATestTimeout):
t.Fatalf("never got op %q", expected)
}
}
func waitForEmptyCh(t *testing.T, ch chan string) {
select {
case op := <-ch:
t.Fatalf("got unexpected op %q", op)
case <-time.After(1 * time.Second):
}
}
func testCAConfig() *structs.CAConfiguration {
return &structs.CAConfiguration{
ClusterID: connect.TestClusterID,
Provider: "mock",
Config: map[string]interface{}{
"LeafCertTTL": "72h",
"IntermediateCertTTL": "2160h",
},
}
}
// initTestManager initializes a CAManager with a mockCAServerDelegate, consuming
// the ops that come through the channels and returning when initialization has finished.
func initTestManager(t *testing.T, manager *CAManager, delegate *mockCAServerDelegate) {
initCh := make(chan struct{})
go func() {
require.NoError(t, manager.InitializeCA())
close(initCh)
}()
for i := 0; i < 5; i++ {
select {
case <-delegate.callbackCh:
case <-time.After(CATestTimeout):
t.Fatal("failed waiting for initialization events")
}
}
select {
case <-initCh:
case <-time.After(CATestTimeout):
t.Fatal("failed waiting for initialization")
}
}
func TestCAManager_Initialize(t *testing.T) {
if testing.Short() {
t.Skip("too slow for testing.Short")
}
conf := DefaultConfig()
conf.ConnectEnabled = true
conf.PrimaryDatacenter = "dc1"
conf.Datacenter = "dc2"
delegate := NewMockCAServerDelegate(t, conf)
manager := NewCAManager(delegate, nil, testutil.Logger(t), conf)
// Call InitializeCA and then confirm the RPCs and provider calls
// happen in the expected order.
require.EqualValues(t, caStateUninitialized, manager.state)
errCh := make(chan error)
go func() {
errCh <- manager.InitializeCA()
}()
waitForCh(t, delegate.callbackCh, "forwardDC/ConnectCA.Roots")
require.EqualValues(t, caStateInitializing, manager.state)
waitForCh(t, delegate.callbackCh, "provider/GenerateIntermediateCSR")
waitForCh(t, delegate.callbackCh, "forwardDC/ConnectCA.SignIntermediate")
waitForCh(t, delegate.callbackCh, "provider/SetIntermediate")
waitForCh(t, delegate.callbackCh, "raftApply/ConnectCA")
waitForEmptyCh(t, delegate.callbackCh)
// Make sure the InitializeCA call returned successfully.
select {
case err := <-errCh:
require.NoError(t, err)
case <-time.After(CATestTimeout):
t.Fatal("never got result from errCh")
}
require.EqualValues(t, caStateInitialized, manager.state)
}
func TestCAManager_UpdateConfigWhileRenewIntermediate(t *testing.T) {
if testing.Short() {
t.Skip("too slow for testing.Short")
}
// No parallel execution because we change globals
// Set the interval and drift buffer low for renewing the cert.
origInterval := structs.IntermediateCertRenewInterval
origDriftBuffer := ca.CertificateTimeDriftBuffer
defer func() {
structs.IntermediateCertRenewInterval = origInterval
ca.CertificateTimeDriftBuffer = origDriftBuffer
}()
structs.IntermediateCertRenewInterval = time.Millisecond
ca.CertificateTimeDriftBuffer = 0
conf := DefaultConfig()
conf.ConnectEnabled = true
conf.PrimaryDatacenter = "dc1"
conf.Datacenter = "dc2"
delegate := NewMockCAServerDelegate(t, conf)
manager := NewCAManager(delegate, nil, testutil.Logger(t), conf)
initTestManager(t, manager, delegate)
// Wait half the TTL for the cert to need renewing.
time.Sleep(500 * time.Millisecond)
// Call RenewIntermediate and then confirm the RPCs and provider calls
// happen in the expected order.
errCh := make(chan error)
go func() {
errCh <- manager.RenewIntermediate(context.TODO(), false)
}()
waitForCh(t, delegate.callbackCh, "provider/GenerateIntermediateCSR")
// Call UpdateConfiguration while RenewIntermediate is still in-flight to
// make sure we get an error about the state being occupied.
go func() {
require.EqualValues(t, caStateRenewIntermediate, manager.state)
require.Error(t, errors.New("already in state"), manager.UpdateConfiguration(&structs.CARequest{}))
}()
waitForCh(t, delegate.callbackCh, "forwardDC/ConnectCA.SignIntermediate")
waitForCh(t, delegate.callbackCh, "provider/SetIntermediate")
waitForCh(t, delegate.callbackCh, "raftApply/ConnectCA")
waitForEmptyCh(t, delegate.callbackCh)
// Make sure the RenewIntermediate call returned successfully.
select {
case err := <-errCh:
require.NoError(t, err)
case <-time.After(CATestTimeout):
t.Fatal("never got result from errCh")
}
require.EqualValues(t, caStateInitialized, manager.state)
}