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Clean up Vault renew tests and shutdown

This commit is contained in:
Kyle Havlovitz 2020-09-11 08:41:05 -07:00 committed by Mike Morris
parent 844e9ffe16
commit 9496780ab4
4 changed files with 49 additions and 53 deletions
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35
agent/connect/ca/provider_vault.go
View File

@ -2,13 +2,13 @@ package ca
import (
"bytes"
"context"
"crypto/x509"
"encoding/pem"
"fmt"
"io/ioutil"
"net/http"
"strings"
"sync"
"github.com/hashicorp/consul/agent/connect"
"github.com/hashicorp/consul/agent/structs"
@ -27,9 +27,7 @@ type VaultProvider struct {
config *structs.VaultCAProviderConfig
client *vaultapi.Client
shutdown bool
shutdownCh chan struct{}
shutdownLock sync.RWMutex
shutdown func()
isPrimary bool
clusterID string
@ -38,6 +36,10 @@ type VaultProvider struct {
logger hclog.Logger
}
func NewVaultProvider() *VaultProvider {
return &VaultProvider{shutdown: func() {}}
}
func vaultTLSConfig(config *structs.VaultCAProviderConfig) *vaultapi.TLSConfig {
return &vaultapi.TLSConfig{
CACert: config.CAFile,
@ -74,7 +76,6 @@ func (v *VaultProvider) Configure(cfg ProviderConfig) error {
v.isPrimary = cfg.IsPrimary
v.clusterID = cfg.ClusterID
v.spiffeID = connect.SpiffeIDSigningForCluster(&structs.CAConfiguration{ClusterID: v.clusterID})
v.shutdownCh = make(chan struct{}, 0)
// Look up the token to see if we can auto-renew its lease.
secret, err := client.Auth().Token().Lookup(config.Token)
@ -99,25 +100,28 @@ func (v *VaultProvider) Configure(cfg ProviderConfig) error {
LeaseDuration: secret.LeaseDuration,
},
},
Increment: int(token.TTL),
Increment: token.TTL,
})
if err != nil {
return fmt.Errorf("Error beginning Vault provider token renewal: %v", err)
}
go v.renewToken(renewer)
ctx, cancel := context.WithCancel(context.TODO())
v.shutdown = cancel
go v.renewToken(ctx, renewer)
}
return nil
}
// renewToken uses a vaultapi.Renewer to repeatedly renew our token's lease.
func (v *VaultProvider) renewToken(renewer *vaultapi.Renewer) {
func (v *VaultProvider) renewToken(ctx context.Context, renewer *vaultapi.Renewer) {
go renewer.Renew()
defer renewer.Stop()
for {
select {
case <-v.shutdownCh:
renewer.Stop()
case <-ctx.Done():
return
case err := <-renewer.DoneCh():
@ -125,6 +129,9 @@ func (v *VaultProvider) renewToken(renewer *vaultapi.Renewer) {
v.logger.Error(fmt.Sprintf("Error renewing token for Vault provider: %v", err))
}
// Renewer routine has finished, so start it again.
go renewer.Renew()
case <-renewer.RenewCh():
v.logger.Error("Successfully renewed token for Vault provider")
}
@ -508,13 +515,7 @@ func (v *VaultProvider) Cleanup() error {
// Stop shuts down the token renew goroutine.
func (v *VaultProvider) Stop() {
v.shutdownLock.Lock()
defer v.shutdownLock.Unlock()
if !v.shutdown && v.shutdownCh != nil {
close(v.shutdownCh)
v.shutdown = true
}
v.shutdown()
}
func ParseVaultCAConfig(raw map[string]interface{}) (*structs.VaultCAProviderConfig, error) {

63
agent/connect/ca/provider_vault_test.go
View File

@ -55,14 +55,10 @@ func TestVaultCAProvider_SecondaryActiveIntermediate(t *testing.T) {
func TestVaultCAProvider_RenewToken(t *testing.T) {
t.Parallel()
require := require.New(t)
skipIfVaultNotPresent(t)
testVault, err := runTestVault()
if err != nil {
t.Fatalf("err: %v", err)
}
testVault, err := runTestVault(t)
require.NoError(t, err)
testVault.WaitUntilReady(t)
// Create a token with a short TTL to be renewed by the provider.
@ -71,26 +67,26 @@ func TestVaultCAProvider_RenewToken(t *testing.T) {
TTL: ttl.String(),
}
secret, err := testVault.client.Auth().Token().Create(tcr)
require.NoError(err)
require.NoError(t, err)
providerToken := secret.Auth.ClientToken
_, err = createVaultProvider(true, testVault.addr, providerToken, nil)
require.NoError(err)
_, err = createVaultProvider(t, true, testVault.addr, providerToken, nil)
require.NoError(t, err)
// Check the last renewal time.
secret, err = testVault.client.Auth().Token().Lookup(providerToken)
require.NoError(err)
require.NoError(t, err)
firstRenewal, err := secret.Data["last_renewal_time"].(json.Number).Int64()
require.NoError(err)
time.Sleep(ttl * 2)
require.NoError(t, err)
// Wait past the TTL and make sure the token has been renewed.
secret, err = testVault.client.Auth().Token().Lookup(providerToken)
require.NoError(err)
lastRenewal, err := secret.Data["last_renewal_time"].(json.Number).Int64()
require.NoError(err)
require.Greater(lastRenewal, firstRenewal)
retry.Run(t, func(r *retry.R) {
secret, err = testVault.client.Auth().Token().Lookup(providerToken)
require.NoError(r, err)
lastRenewal, err := secret.Data["last_renewal_time"].(json.Number).Int64()
require.NoError(r, err)
require.Greater(r, lastRenewal, firstRenewal)
})
}
func TestVaultCAProvider_Bootstrap(t *testing.T) {
@ -391,14 +387,14 @@ func testVaultProvider(t *testing.T) (*VaultProvider, *testVaultServer) {
}
func testVaultProviderWithConfig(t *testing.T, isPrimary bool, rawConf map[string]interface{}) (*VaultProvider, *testVaultServer) {
testVault, err := runTestVault()
testVault, err := runTestVault(t)
if err != nil {
t.Fatalf("err: %v", err)
}
testVault.WaitUntilReady(t)
provider, err := createVaultProvider(isPrimary, testVault.addr, testVault.rootToken, rawConf)
provider, err := createVaultProvider(t, isPrimary, testVault.addr, testVault.rootToken, rawConf)
if err != nil {
testVault.Stop()
t.Fatalf("err: %v", err)
@ -406,7 +402,7 @@ func testVaultProviderWithConfig(t *testing.T, isPrimary bool, rawConf map[strin
return provider, testVault
}
func createVaultProvider(isPrimary bool, addr, token string, rawConf map[string]interface{}) (*VaultProvider, error) {
func createVaultProvider(t *testing.T, isPrimary bool, addr, token string, rawConf map[string]interface{}) (*VaultProvider, error) {
conf := map[string]interface{}{
"Address": addr,
"Token": token,
@ -419,7 +415,7 @@ func createVaultProvider(isPrimary bool, addr, token string, rawConf map[string]
conf[k] = v
}
provider := &VaultProvider{}
provider := NewVaultProvider()
cfg := ProviderConfig{
ClusterID: connect.TestClusterID,
@ -438,16 +434,11 @@ func createVaultProvider(isPrimary bool, addr, token string, rawConf map[string]
cfg.Datacenter = "dc2"
}
if err := provider.Configure(cfg); err != nil {
return nil, err
}
require.NoError(t, provider.Configure(cfg))
if isPrimary {
if err := provider.GenerateRoot(); err != nil {
return nil, err
}
if _, err := provider.GenerateIntermediate(); err != nil {
return nil, err
}
require.NoError(t, provider.GenerateRoot())
_, err := provider.GenerateIntermediate()
require.NoError(t, err)
}
return provider, nil
@ -469,7 +460,7 @@ func skipIfVaultNotPresent(t *testing.T) {
}
}
func runTestVault() (*testVaultServer, error) {
func runTestVault(t *testing.T) (*testVaultServer, error) {
vaultBinaryName := os.Getenv("VAULT_BINARY_NAME")
if vaultBinaryName == "" {
vaultBinaryName = "vault"
@ -520,13 +511,17 @@ func runTestVault() (*testVaultServer, error) {
return nil, err
}
return &testVaultServer{
testVault := &testVaultServer{
rootToken: token,
addr: "http://" + clientAddr,
cmd: cmd,
client: client,
returnPortsFn: returnPortsFn,
}, nil
}
t.Cleanup(func() {
testVault.Stop()
})
return testVault, nil
}
type testVaultServer struct {

2
agent/consul/connect_ca_endpoint.go
View File

@ -158,7 +158,7 @@ func (s *ConnectCA) ConfigurationSet(
defer func() {
if cleanupNewProvider {
if err := newProvider.Cleanup(); err != nil {
s.logger.Warn("failed to clean up temporary new CA provider", "provider", newProvider)
s.logger.Warn("failed to clean up CA provider while handling startup failure", "provider", newProvider, "error", err)
}
}
}()

2
agent/consul/leader_connect.go
View File

@ -116,7 +116,7 @@ func (s *Server) createCAProvider(conf *structs.CAConfiguration) (ca.Provider, e
case structs.ConsulCAProvider:
p = &ca.ConsulProvider{Delegate: &consulCADelegate{s}}
case structs.VaultCAProvider:
p = &ca.VaultProvider{}
p = ca.NewVaultProvider()
case structs.AWSCAProvider:
p = &ca.AWSProvider{}
default: