open-consul/api/watch/funcs_test.go

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package watch_test
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import (
"bytes"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"crypto/sha256"
"crypto/x509"
"crypto/x509/pkix"
"encoding/json"
"encoding/pem"
"fmt"
"math/big"
"net/url"
"sync"
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"testing"
"time"
"github.com/hashicorp/consul/api"
"github.com/hashicorp/consul/api/watch"
"github.com/hashicorp/consul/sdk/testutil"
"github.com/stretchr/testify/require"
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)
func makeClient(t *testing.T) (*api.Client, *testutil.TestServer) {
// Make client config
conf := api.DefaultConfig()
// Create server
server, err := testutil.NewTestServerConfigT(t, nil)
require.NoError(t, err)
conf.Address = server.HTTPAddr
server.WaitForLeader(t)
// Create client
client, err := api.NewClient(conf)
if err != nil {
server.Stop()
// guaranteed to fail but will be a nice error message
require.NoError(t, err)
}
return client, server
}
func updateConnectCA(t *testing.T, client *api.Client) {
t.Helper()
connect := client.Connect()
cfg, _, err := connect.CAGetConfig(nil)
require.NoError(t, err)
require.NotNil(t, cfg.Config)
// update the cert
// Create the private key we'll use for this CA cert.
pk, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
require.NoError(t, err)
bs, err := x509.MarshalECPrivateKey(pk)
require.NoError(t, err)
var buf bytes.Buffer
require.NoError(t, pem.Encode(&buf, &pem.Block{Type: "EC PRIVATE KEY", Bytes: bs}))
cfg.Config["PrivateKey"] = buf.String()
bs, err = x509.MarshalPKIXPublicKey(pk.Public())
require.NoError(t, err)
hash := sha256.Sum256(bs)
kID := hash[:]
// Create the CA cert
template := x509.Certificate{
SerialNumber: big.NewInt(42),
Subject: pkix.Name{CommonName: "CA Modified"},
URIs: []*url.URL{{Scheme: "spiffe", Host: fmt.Sprintf("11111111-2222-3333-4444-555555555555.%s", "consul")}},
BasicConstraintsValid: true,
KeyUsage: x509.KeyUsageCertSign |
x509.KeyUsageCRLSign |
x509.KeyUsageDigitalSignature,
IsCA: true,
NotAfter: time.Now().AddDate(10, 0, 0),
NotBefore: time.Now(),
AuthorityKeyId: kID,
SubjectKeyId: kID,
}
bs, err = x509.CreateCertificate(rand.Reader, &template, &template, pk.Public(), pk)
require.NoError(t, err)
buf.Reset()
require.NoError(t, pem.Encode(&buf, &pem.Block{Type: "CERTIFICATE", Bytes: bs}))
cfg.Config["RootCert"] = buf.String()
_, err = connect.CASetConfig(cfg, nil)
require.NoError(t, err)
}
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func TestKeyWatch(t *testing.T) {
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t.Parallel()
c, s := makeClient(t)
defer s.Stop()
var (
wakeups []*api.KVPair
notifyCh = make(chan struct{})
)
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plan := mustParse(t, `{"type":"key", "key":"foo/bar/baz"}`)
plan.Handler = func(idx uint64, raw interface{}) {
var v *api.KVPair
if raw == nil { // nil is a valid return value
v = nil
} else {
var ok bool
if v, ok = raw.(*api.KVPair); !ok {
return // ignore
}
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}
wakeups = append(wakeups, v)
notifyCh <- struct{}{}
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}
var wg sync.WaitGroup
wg.Add(1)
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go func() {
defer wg.Done()
if err := plan.Run(s.HTTPAddr); err != nil {
t.Errorf("err: %v", err)
}
}()
defer plan.Stop()
// Wait for first wakeup.
<-notifyCh
{
kv := c.KV()
pair := &api.KVPair{
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Key: "foo/bar/baz",
Value: []byte("test"),
}
if _, err := kv.Put(pair, nil); err != nil {
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t.Fatalf("err: %v", err)
}
}
// Wait for second wakeup.
<-notifyCh
plan.Stop()
wg.Wait()
require.Len(t, wakeups, 2)
{
v := wakeups[0]
require.Nil(t, v)
}
{
v := wakeups[1]
require.Equal(t, "test", string(v.Value))
}
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}
func TestKeyWatch_With_PrefixDelete(t *testing.T) {
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t.Parallel()
c, s := makeClient(t)
defer s.Stop()
var (
wakeups []*api.KVPair
notifyCh = make(chan struct{})
)
plan := mustParse(t, `{"type":"key", "key":"foo/bar/baz"}`)
plan.Handler = func(idx uint64, raw interface{}) {
var v *api.KVPair
if raw == nil { // nil is a valid return value
v = nil
} else {
var ok bool
if v, ok = raw.(*api.KVPair); !ok {
return // ignore
}
}
wakeups = append(wakeups, v)
notifyCh <- struct{}{}
}
var wg sync.WaitGroup
wg.Add(1)
go func() {
defer wg.Done()
if err := plan.Run(s.HTTPAddr); err != nil {
t.Errorf("err: %v", err)
}
}()
defer plan.Stop()
// Wait for first wakeup.
<-notifyCh
{
kv := c.KV()
pair := &api.KVPair{
Key: "foo/bar/baz",
Value: []byte("test"),
}
if _, err := kv.Put(pair, nil); err != nil {
t.Fatalf("err: %v", err)
}
}
// Wait for second wakeup.
<-notifyCh
plan.Stop()
wg.Wait()
require.Len(t, wakeups, 2)
{
v := wakeups[0]
require.Nil(t, v)
}
{
v := wakeups[1]
require.Equal(t, "test", string(v.Value))
}
}
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func TestKeyPrefixWatch(t *testing.T) {
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t.Parallel()
c, s := makeClient(t)
defer s.Stop()
var (
wakeups []api.KVPairs
notifyCh = make(chan struct{})
)
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plan := mustParse(t, `{"type":"keyprefix", "prefix":"foo/"}`)
plan.Handler = func(idx uint64, raw interface{}) {
if raw == nil {
return // ignore
}
v, ok := raw.(api.KVPairs)
if !ok {
return
}
wakeups = append(wakeups, v)
notifyCh <- struct{}{}
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}
var wg sync.WaitGroup
wg.Add(1)
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go func() {
defer wg.Done()
if err := plan.Run(s.HTTPAddr); err != nil {
t.Errorf("err: %v", err)
}
}()
defer plan.Stop()
// Wait for first wakeup.
<-notifyCh
{
kv := c.KV()
pair := &api.KVPair{
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Key: "foo/bar",
}
if _, err := kv.Put(pair, nil); err != nil {
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t.Fatalf("err: %v", err)
}
}
// Wait for second wakeup.
<-notifyCh
plan.Stop()
wg.Wait()
require.Len(t, wakeups, 2)
{
v := wakeups[0]
require.Len(t, v, 0)
}
{
v := wakeups[1]
require.Len(t, v, 1)
require.Equal(t, "foo/bar", v[0].Key)
}
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}
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func TestServicesWatch(t *testing.T) {
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t.Parallel()
c, s := makeClient(t)
defer s.Stop()
s.WaitForSerfCheck(t)
var (
wakeups []map[string][]string
notifyCh = make(chan struct{})
)
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plan := mustParse(t, `{"type":"services"}`)
plan.Handler = func(idx uint64, raw interface{}) {
if raw == nil {
return // ignore
}
v, ok := raw.(map[string][]string)
if !ok {
return // ignore
}
wakeups = append(wakeups, v)
notifyCh <- struct{}{}
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}
var wg sync.WaitGroup
wg.Add(1)
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go func() {
defer wg.Done()
if err := plan.Run(s.HTTPAddr); err != nil {
t.Errorf("err: %v", err)
}
}()
defer plan.Stop()
// Wait for first wakeup.
<-notifyCh
{
agent := c.Agent()
reg := &api.AgentServiceRegistration{
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ID: "foo",
Name: "foo",
}
if err := agent.ServiceRegister(reg); err != nil {
t.Fatalf("err: %v", err)
}
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}
// Wait for second wakeup.
<-notifyCh
plan.Stop()
wg.Wait()
require.Len(t, wakeups, 2)
{
v := wakeups[0]
require.Len(t, v, 1)
_, ok := v["consul"]
require.True(t, ok)
}
{
v := wakeups[1]
require.Len(t, v, 2)
_, ok := v["consul"]
require.True(t, ok)
_, ok = v["foo"]
require.True(t, ok)
}
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}
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func TestNodesWatch(t *testing.T) {
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t.Parallel()
c, s := makeClient(t)
defer s.Stop()
s.WaitForSerfCheck(t) // wait for AE to sync
var (
wakeups [][]*api.Node
notifyCh = make(chan struct{})
)
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plan := mustParse(t, `{"type":"nodes"}`)
plan.Handler = func(idx uint64, raw interface{}) {
if raw == nil {
return // ignore
}
v, ok := raw.([]*api.Node)
if !ok {
return // ignore
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}
wakeups = append(wakeups, v)
notifyCh <- struct{}{}
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}
var wg sync.WaitGroup
wg.Add(1)
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go func() {
defer wg.Done()
if err := plan.Run(s.HTTPAddr); err != nil {
t.Errorf("err: %v", err)
}
}()
defer plan.Stop()
// Wait for first wakeup.
<-notifyCh
{
catalog := c.Catalog()
reg := &api.CatalogRegistration{
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Node: "foobar",
Address: "1.1.1.1",
Datacenter: "dc1",
}
if _, err := catalog.Register(reg, nil); err != nil {
t.Fatalf("err: %v", err)
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}
}
// Wait for second wakeup.
<-notifyCh
plan.Stop()
wg.Wait()
require.Len(t, wakeups, 2)
var originalNodeName string
{
v := wakeups[0]
require.Len(t, v, 1)
originalNodeName = v[0].Node
}
{
v := wakeups[1]
require.Len(t, v, 2)
if v[0].Node == originalNodeName {
require.Equal(t, "foobar", v[1].Node)
} else {
require.Equal(t, "foobar", v[0].Node)
}
}
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}
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func TestServiceWatch(t *testing.T) {
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t.Parallel()
c, s := makeClient(t)
defer s.Stop()
s.WaitForSerfCheck(t)
var (
wakeups [][]*api.ServiceEntry
notifyCh = make(chan struct{})
)
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plan := mustParse(t, `{"type":"service", "service":"foo", "tag":"bar", "passingonly":true}`)
plan.Handler = func(idx uint64, raw interface{}) {
if raw == nil {
return // ignore
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}
v, ok := raw.([]*api.ServiceEntry)
if !ok {
return // ignore
}
wakeups = append(wakeups, v)
notifyCh <- struct{}{}
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}
var wg sync.WaitGroup
wg.Add(1)
go func() {
defer wg.Done()
if err := plan.Run(s.HTTPAddr); err != nil {
t.Errorf("err: %v", err)
}
}()
defer plan.Stop()
// Wait for first wakeup.
<-notifyCh
{
agent := c.Agent()
reg := &api.AgentServiceRegistration{
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ID: "foo",
Name: "foo",
Tags: []string{"bar"},
}
if err := agent.ServiceRegister(reg); err != nil {
t.Fatalf("err: %v", err)
}
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}
// Wait for second wakeup.
<-notifyCh
plan.Stop()
wg.Wait()
require.Len(t, wakeups, 2)
{
v := wakeups[0]
require.Len(t, v, 0)
}
{
v := wakeups[1]
require.Len(t, v, 1)
require.Equal(t, "foo", v[0].Service.ID)
}
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}
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func TestServiceMultipleTagsWatch(t *testing.T) {
t.Parallel()
c, s := makeClient(t)
defer s.Stop()
s.WaitForSerfCheck(t)
var (
wakeups [][]*api.ServiceEntry
notifyCh = make(chan struct{})
)
plan := mustParse(t, `{"type":"service", "service":"foo", "tag":["bar","buzz"], "passingonly":true}`)
plan.Handler = func(idx uint64, raw interface{}) {
if raw == nil {
return // ignore
}
v, ok := raw.([]*api.ServiceEntry)
if !ok {
return // ignore
}
wakeups = append(wakeups, v)
notifyCh <- struct{}{}
}
var wg sync.WaitGroup
wg.Add(1)
go func() {
defer wg.Done()
if err := plan.Run(s.HTTPAddr); err != nil {
t.Errorf("err: %v", err)
}
}()
defer plan.Stop()
// Wait for first wakeup.
<-notifyCh
{
agent := c.Agent()
// we do not want to find this one.
reg := &api.AgentServiceRegistration{
ID: "foobarbiff",
Name: "foo",
Tags: []string{"bar", "biff"},
}
if err := agent.ServiceRegister(reg); err != nil {
t.Fatalf("err: %v", err)
}
// we do not want to find this one.
reg = &api.AgentServiceRegistration{
ID: "foobuzzbiff",
Name: "foo",
Tags: []string{"buzz", "biff"},
}
if err := agent.ServiceRegister(reg); err != nil {
t.Fatalf("err: %v", err)
}
// we want to find this one
reg = &api.AgentServiceRegistration{
ID: "foobarbuzzbiff",
Name: "foo",
Tags: []string{"bar", "buzz", "biff"},
}
if err := agent.ServiceRegister(reg); err != nil {
t.Fatalf("err: %v", err)
}
}
// Wait for second wakeup.
<-notifyCh
plan.Stop()
wg.Wait()
require.Len(t, wakeups, 2)
{
v := wakeups[0]
require.Len(t, v, 0)
}
{
v := wakeups[1]
require.Len(t, v, 1)
require.Equal(t, "foobarbuzzbiff", v[0].Service.ID)
require.ElementsMatch(t, []string{"bar", "buzz", "biff"}, v[0].Service.Tags)
}
}
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func TestChecksWatch_State(t *testing.T) {
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t.Parallel()
c, s := makeClient(t)
defer s.Stop()
s.WaitForSerfCheck(t)
var (
wakeups [][]*api.HealthCheck
notifyCh = make(chan struct{})
)
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plan := mustParse(t, `{"type":"checks", "state":"warning"}`)
plan.Handler = func(idx uint64, raw interface{}) {
if raw == nil {
return // ignore
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}
v, ok := raw.([]*api.HealthCheck)
if !ok {
return // ignore
}
wakeups = append(wakeups, v)
notifyCh <- struct{}{}
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}
var wg sync.WaitGroup
wg.Add(1)
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go func() {
defer wg.Done()
if err := plan.Run(s.HTTPAddr); err != nil {
t.Errorf("err: %v", err)
}
}()
defer plan.Stop()
// Wait for first wakeup.
<-notifyCh
{
catalog := c.Catalog()
reg := &api.CatalogRegistration{
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Node: "foobar",
Address: "1.1.1.1",
Datacenter: "dc1",
Check: &api.AgentCheck{
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Node: "foobar",
CheckID: "foobar",
Name: "foobar",
Status: api.HealthWarning,
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},
}
if _, err := catalog.Register(reg, nil); err != nil {
t.Fatalf("err: %v", err)
}
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}
// Wait for second wakeup.
<-notifyCh
plan.Stop()
wg.Wait()
require.Len(t, wakeups, 2)
{
v := wakeups[0]
require.Len(t, v, 0)
}
{
v := wakeups[1]
require.Len(t, v, 1)
require.Equal(t, "foobar", v[0].CheckID)
require.Equal(t, "warning", v[0].Status)
}
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}
func TestChecksWatch_Service(t *testing.T) {
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t.Parallel()
c, s := makeClient(t)
defer s.Stop()
s.WaitForSerfCheck(t)
var (
wakeups [][]*api.HealthCheck
notifyCh = make(chan struct{})
)
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plan := mustParse(t, `{"type":"checks", "service":"foobar"}`)
plan.Handler = func(idx uint64, raw interface{}) {
if raw == nil {
return // ignore
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}
v, ok := raw.([]*api.HealthCheck)
if !ok {
return // ignore
}
wakeups = append(wakeups, v)
notifyCh <- struct{}{}
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}
var wg sync.WaitGroup
wg.Add(1)
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go func() {
defer wg.Done()
if err := plan.Run(s.HTTPAddr); err != nil {
t.Errorf("err: %v", err)
}
}()
defer plan.Stop()
// Wait for first wakeup.
<-notifyCh
{
catalog := c.Catalog()
reg := &api.CatalogRegistration{
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Node: "foobar",
Address: "1.1.1.1",
Datacenter: "dc1",
Service: &api.AgentService{
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ID: "foobar",
Service: "foobar",
},
Check: &api.AgentCheck{
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Node: "foobar",
CheckID: "foobar",
Name: "foobar",
Status: api.HealthPassing,
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ServiceID: "foobar",
},
}
if _, err := catalog.Register(reg, nil); err != nil {
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t.Fatalf("err: %v", err)
}
}
// Wait for second wakeup.
<-notifyCh
plan.Stop()
wg.Wait()
require.Len(t, wakeups, 2)
{
v := wakeups[0]
require.Len(t, v, 0)
}
{
v := wakeups[1]
require.Len(t, v, 1)
require.Equal(t, "foobar", v[0].CheckID)
}
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}
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func TestEventWatch(t *testing.T) {
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t.Parallel()
c, s := makeClient(t)
defer s.Stop()
var (
wakeups [][]*api.UserEvent
notifyCh = make(chan struct{})
)
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plan := mustParse(t, `{"type":"event", "name": "foo"}`)
plan.Handler = func(idx uint64, raw interface{}) {
if raw == nil {
return
}
v, ok := raw.([]*api.UserEvent)
if !ok {
return // ignore
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}
wakeups = append(wakeups, v)
notifyCh <- struct{}{}
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}
var wg sync.WaitGroup
wg.Add(1)
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go func() {
defer wg.Done()
if err := plan.Run(s.HTTPAddr); err != nil {
t.Errorf("err: %v", err)
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}
}()
defer plan.Stop()
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// Wait for first wakeup.
<-notifyCh
{
event := c.Event()
params := &api.UserEvent{Name: "foo"}
if _, _, err := event.Fire(params, nil); err != nil {
t.Fatalf("err: %v", err)
}
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}
// Wait for second wakeup.
<-notifyCh
plan.Stop()
wg.Wait()
require.Len(t, wakeups, 2)
{
v := wakeups[0]
require.Len(t, v, 0)
}
{
v := wakeups[1]
require.Len(t, v, 1)
require.Equal(t, "foo", v[0].Name)
}
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}
func TestConnectRootsWatch(t *testing.T) {
t.Parallel()
// makeClient will bootstrap a CA
c, s := makeClient(t)
defer s.Stop()
var (
wakeups []*api.CARootList
notifyCh = make(chan struct{})
)
plan := mustParse(t, `{"type":"connect_roots"}`)
plan.Handler = func(idx uint64, raw interface{}) {
if raw == nil {
return // ignore
}
v, ok := raw.(*api.CARootList)
if !ok || v == nil || len(v.Roots) == 0 {
return // ignore
}
wakeups = append(wakeups, v)
notifyCh <- struct{}{}
}
var wg sync.WaitGroup
wg.Add(1)
go func() {
defer wg.Done()
if err := plan.Run(s.HTTPAddr); err != nil {
t.Errorf("err: %v", err)
}
}()
defer plan.Stop()
// Wait for first wakeup.
<-notifyCh
updateConnectCA(t, c)
// Wait for second wakeup.
<-notifyCh
plan.Stop()
wg.Wait()
require.Len(t, wakeups, 2)
var originalCAID string
{ // Only 1 CA is the bootstrapped state (i.e. first response).
v := wakeups[0]
require.Len(t, v.Roots, 1)
originalCAID = v.ActiveRootID
require.NotEmpty(t, originalCAID)
}
{ // This is the new CA showing up.
v := wakeups[1]
require.Len(t, v.Roots, 2)
require.NotEqual(t, originalCAID, v.ActiveRootID)
}
}
func TestConnectLeafWatch(t *testing.T) {
t.Parallel()
// makeClient will bootstrap a CA
c, s := makeClient(t)
defer s.Stop()
s.WaitForSerfCheck(t)
// Register a web service to get certs for
{
agent := c.Agent()
reg := api.AgentServiceRegistration{
ID: "web",
Name: "web",
Port: 9090,
}
err := agent.ServiceRegister(&reg)
require.Nil(t, err)
}
var (
wakeups []*api.LeafCert
notifyCh = make(chan struct{})
)
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plan := mustParse(t, `{"type":"connect_leaf", "service":"web"}`)
plan.Handler = func(idx uint64, raw interface{}) {
if raw == nil {
return // ignore
}
v, ok := raw.(*api.LeafCert)
if !ok || v == nil {
return // ignore
}
wakeups = append(wakeups, v)
notifyCh <- struct{}{}
}
var wg sync.WaitGroup
wg.Add(1)
go func() {
defer wg.Done()
if err := plan.Run(s.HTTPAddr); err != nil {
t.Errorf("err: %v", err)
}
}()
defer plan.Stop()
// Wait for first wakeup.
<-notifyCh
start := time.Now()
updateConnectCA(t, c)
// Wait for second wakeup. Note due to the 30s random jitter for this endpoint
// this may take up to 30s.
<-notifyCh
t.Logf("leaf cert regen took %s with jitter", time.Since(start))
plan.Stop()
wg.Wait()
require.Len(t, wakeups, 2)
var lastCert *api.LeafCert
{ // Initial fetch, just store the cert and return
v := wakeups[0]
require.NotNil(t, v)
lastCert = v
}
{ // Rotation completed.
v := wakeups[1]
require.NotNil(t, v)
// TODO(banks): right now the root rotation actually causes Serial numbers
// to reset so these end up all being the same. That needs fixing but it's
// a bigger task than I want to bite off for this PR.
//require.NotEqual(t, lastCert.SerialNumber, v.SerialNumber)
require.NotEqual(t, lastCert.CertPEM, v.CertPEM)
require.NotEqual(t, lastCert.PrivateKeyPEM, v.PrivateKeyPEM)
require.NotEqual(t, lastCert.ModifyIndex, v.ModifyIndex)
}
}
func TestAgentServiceWatch(t *testing.T) {
t.Parallel()
c, s := makeClient(t)
defer s.Stop()
s.WaitForSerfCheck(t)
var (
wakeups []*api.AgentService
notifyCh = make(chan struct{})
)
// Register a local agent service
reg := &api.AgentServiceRegistration{
Name: "web",
Port: 8080,
}
client := c
agent := client.Agent()
err := agent.ServiceRegister(reg)
require.NoError(t, err)
plan := mustParse(t, `{"type":"agent_service", "service_id":"web"}`)
plan.HybridHandler = func(blockParamVal watch.BlockingParamVal, raw interface{}) {
if raw == nil {
return // ignore
}
v, ok := raw.(*api.AgentService)
if !ok || v == nil {
return // ignore
}
wakeups = append(wakeups, v)
notifyCh <- struct{}{}
}
var wg sync.WaitGroup
wg.Add(1)
go func() {
defer wg.Done()
if err := plan.Run(s.HTTPAddr); err != nil {
t.Errorf("err: %v", err)
}
}()
defer plan.Stop()
// Wait for first wakeup.
<-notifyCh
{
// Change the service definition
reg.Port = 9090
err := agent.ServiceRegister(reg)
require.NoError(t, err)
}
// Wait for second wakeup.
<-notifyCh
plan.Stop()
wg.Wait()
require.Len(t, wakeups, 2)
{
v := wakeups[0]
require.Equal(t, 8080, v.Port)
}
{
v := wakeups[1]
require.Equal(t, 9090, v.Port)
}
}
func mustParse(t *testing.T, q string) *watch.Plan {
t.Helper()
var params map[string]interface{}
if err := json.Unmarshal([]byte(q), &params); err != nil {
t.Fatal(err)
}
plan, err := watch.Parse(params)
if err != nil {
t.Fatalf("err: %v", err)
}
return plan
}