open-consul/agent/consul/state/state_store_test.go

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package state
import (
crand "crypto/rand"
"fmt"
"testing"
"time"
"github.com/hashicorp/consul/agent/structs"
"github.com/hashicorp/consul/types"
"github.com/hashicorp/go-memdb"
"github.com/stretchr/testify/require"
)
func testUUID() string {
buf := make([]byte, 16)
if _, err := crand.Read(buf); err != nil {
panic(fmt.Errorf("failed to read random bytes: %v", err))
}
return fmt.Sprintf("%08x-%04x-%04x-%04x-%12x",
buf[0:4],
buf[4:6],
buf[6:8],
buf[8:10],
buf[10:16])
}
func snapshotIndexes(snap *Snapshot) ([]*IndexEntry, error) {
iter, err := snap.Indexes()
if err != nil {
return nil, err
}
var indexes []*IndexEntry
for index := iter.Next(); index != nil; index = iter.Next() {
indexes = append(indexes, index.(*IndexEntry))
}
return indexes, nil
}
func restoreIndexes(indexes []*IndexEntry, r *Restore) error {
for _, index := range indexes {
if err := r.IndexRestore(index); err != nil {
return err
}
}
return nil
}
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func testStateStore(t *testing.T) *Store {
s, err := NewStateStore(nil)
if err != nil {
t.Fatalf("err: %s", err)
}
if s == nil {
t.Fatalf("missing state store")
}
return s
}
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func testRegisterNode(t *testing.T, s *Store, idx uint64, nodeID string) {
testRegisterNodeWithMeta(t, s, idx, nodeID, nil)
}
// testRegisterNodeWithChange registers a node and ensures it gets different from previous registration
func testRegisterNodeWithChange(t *testing.T, s *Store, idx uint64, nodeID string) {
testRegisterNodeWithMeta(t, s, idx, nodeID, map[string]string{
"version": string(idx),
})
}
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func testRegisterNodeWithMeta(t *testing.T, s *Store, idx uint64, nodeID string, meta map[string]string) {
node := &structs.Node{Node: nodeID, Meta: meta}
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if err := s.EnsureNode(idx, node); err != nil {
t.Fatalf("err: %s", err)
}
tx := s.db.Txn(false)
defer tx.Abort()
n, err := tx.First("nodes", "id", nodeID)
if err != nil {
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t.Fatalf("err: %s", err)
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}
if result, ok := n.(*structs.Node); !ok || result.Node != nodeID {
t.Fatalf("bad node: %#v", result)
}
}
// testRegisterServiceWithChange registers a service and allow ensuring the consul index is updated
// even if service already exists if using `modifyAccordingIndex`.
// This is done by setting the transaction ID in "version" meta so service will be updated if it already exists
func testRegisterServiceWithChange(t *testing.T, s *Store, idx uint64, nodeID, serviceID string, modifyAccordingIndex bool) {
meta := make(map[string]string)
if modifyAccordingIndex {
meta["version"] = string(idx)
}
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svc := &structs.NodeService{
ID: serviceID,
Service: serviceID,
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Address: "1.1.1.1",
Port: 1111,
Meta: meta,
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}
if err := s.EnsureService(idx, nodeID, svc); err != nil {
t.Fatalf("err: %s", err)
}
tx := s.db.Txn(false)
defer tx.Abort()
_, service, err := firstWatchCompoundWithTxn(tx, "services", "id", nil, nodeID, serviceID)
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if err != nil {
t.Fatalf("err: %s", err)
}
if result, ok := service.(*structs.ServiceNode); !ok ||
result.Node != nodeID ||
result.ServiceID != serviceID {
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t.Fatalf("bad service: %#v", result)
}
}
// testRegisterService register a service with given transaction idx
// If the service already exists, transaction number might not be increased
// Use `testRegisterServiceWithChange()` if you want perform a registration that
// ensures the transaction is updated by setting idx in Meta of Service
func testRegisterService(t *testing.T, s *Store, idx uint64, nodeID, serviceID string) {
testRegisterServiceWithChange(t, s, idx, nodeID, serviceID, false)
}
func testRegisterIngressService(t *testing.T, s *Store, idx uint64, nodeID, serviceID string) {
svc := &structs.NodeService{
ID: serviceID,
Service: serviceID,
Kind: structs.ServiceKindIngressGateway,
Address: "1.1.1.1",
Port: 1111,
}
if err := s.EnsureService(idx, nodeID, svc); err != nil {
t.Fatalf("err: %s", err)
}
tx := s.db.Txn(false)
defer tx.Abort()
_, service, err := firstWatchCompoundWithTxn(tx, "services", "id", nil, nodeID, serviceID)
if err != nil {
t.Fatalf("err: %s", err)
}
if result, ok := service.(*structs.ServiceNode); !ok ||
result.Node != nodeID ||
result.ServiceID != serviceID {
t.Fatalf("bad service: %#v", result)
}
}
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func testRegisterCheck(t *testing.T, s *Store, idx uint64,
nodeID string, serviceID string, checkID types.CheckID, state string) {
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chk := &structs.HealthCheck{
Node: nodeID,
CheckID: checkID,
ServiceID: serviceID,
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Status: state,
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}
if err := s.EnsureCheck(idx, chk); err != nil {
t.Fatalf("err: %s", err)
}
tx := s.db.Txn(false)
defer tx.Abort()
_, c, err := firstWatchCompoundWithTxn(tx, "checks", "id", nil, nodeID, string(checkID))
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if err != nil {
t.Fatalf("err: %s", err)
}
if result, ok := c.(*structs.HealthCheck); !ok ||
result.Node != nodeID ||
result.ServiceID != serviceID ||
result.CheckID != checkID {
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t.Fatalf("bad check: %#v", result)
}
}
func testRegisterSidecarProxy(t *testing.T, s *Store, idx uint64, nodeID string, targetServiceID string) {
svc := &structs.NodeService{
ID: targetServiceID + "-sidecar-proxy",
Service: targetServiceID + "-sidecar-proxy",
Port: 20000,
Kind: structs.ServiceKindConnectProxy,
Proxy: structs.ConnectProxyConfig{
DestinationServiceName: targetServiceID,
DestinationServiceID: targetServiceID,
},
}
require.NoError(t, s.EnsureService(idx, nodeID, svc))
}
func testRegisterConnectNativeService(t *testing.T, s *Store, idx uint64, nodeID string, serviceID string) {
svc := &structs.NodeService{
ID: serviceID,
Service: serviceID,
Port: 1111,
Connect: structs.ServiceConnect{
Native: true,
},
}
require.NoError(t, s.EnsureService(idx, nodeID, svc))
}
func testSetKey(t *testing.T, s *Store, idx uint64, key, value string, entMeta *structs.EnterpriseMeta) {
entry := &structs.DirEntry{
Key: key,
Value: []byte(value),
}
if entMeta != nil {
entry.EnterpriseMeta = *entMeta
}
if err := s.KVSSet(idx, entry); err != nil {
t.Fatalf("err: %s", err)
}
tx := s.db.Txn(false)
defer tx.Abort()
e, err := firstWithTxn(tx, "kvs", "id", key, entMeta)
if err != nil {
t.Fatalf("err: %s", err)
}
if result, ok := e.(*structs.DirEntry); !ok || result.Key != key {
t.Fatalf("bad kvs entry: %#v", result)
}
}
// watchFired is a helper for unit tests that returns if the given watch set
// fired (it doesn't care which watch actually fired). This uses a fixed
// timeout since we already expect the event happened before calling this and
// just need to distinguish a fire from a timeout. We do need a little time to
// allow the watch to set up any goroutines, though.
func watchFired(ws memdb.WatchSet) bool {
timedOut := ws.Watch(time.After(50 * time.Millisecond))
return !timedOut
}
func TestStateStore_Restore_Abort(t *testing.T) {
s := testStateStore(t)
// The detailed restore functions are tested below, this just checks
// that abort works.
restore := s.Restore()
entry := &structs.DirEntry{
Key: "foo",
Value: []byte("bar"),
RaftIndex: structs.RaftIndex{
ModifyIndex: 5,
},
}
if err := restore.KVS(entry); err != nil {
t.Fatalf("err: %s", err)
}
restore.Abort()
idx, entries, err := s.KVSList(nil, "", nil)
if err != nil {
t.Fatalf("err: %s", err)
}
if idx != 0 {
t.Fatalf("bad index: %d", idx)
}
if len(entries) != 0 {
t.Fatalf("bad: %#v", entries)
}
}
func TestStateStore_Abandon(t *testing.T) {
s := testStateStore(t)
abandonCh := s.AbandonCh()
s.Abandon()
select {
case <-abandonCh:
default:
t.Fatalf("bad")
}
}
func TestStateStore_maxIndex(t *testing.T) {
s := testStateStore(t)
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testRegisterNode(t, s, 0, "foo")
testRegisterNode(t, s, 1, "bar")
testRegisterService(t, s, 2, "foo", "consul")
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if max := s.maxIndex("nodes", "services"); max != 2 {
t.Fatalf("bad max: %d", max)
}
}
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func TestStateStore_indexUpdateMaxTxn(t *testing.T) {
s := testStateStore(t)
testRegisterNode(t, s, 0, "foo")
testRegisterNode(t, s, 1, "bar")
tx := s.db.WriteTxnRestore()
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if err := indexUpdateMaxTxn(tx, 3, "nodes"); err != nil {
t.Fatalf("err: %s", err)
}
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require.NoError(t, tx.Commit())
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if max := s.maxIndex("nodes"); max != 3 {
t.Fatalf("bad max: %d", max)
}
}