open-consul/consul/fsm_test.go

572 lines
11 KiB
Go

package consul
import (
"bytes"
"github.com/hashicorp/consul/consul/structs"
"github.com/hashicorp/raft"
"os"
"testing"
)
type MockSink struct {
*bytes.Buffer
cancel bool
}
func (m *MockSink) ID() string {
return "Mock"
}
func (m *MockSink) Cancel() error {
m.cancel = true
return nil
}
func (m *MockSink) Close() error {
return nil
}
func makeLog(buf []byte) *raft.Log {
return &raft.Log{
Index: 1,
Term: 1,
Type: raft.LogCommand,
Data: buf,
}
}
func TestFSM_RegisterNode(t *testing.T) {
fsm, err := NewFSM(os.Stderr)
if err != nil {
t.Fatalf("err: %v", err)
}
defer fsm.Close()
req := structs.RegisterRequest{
Datacenter: "dc1",
Node: "foo",
Address: "127.0.0.1",
}
buf, err := structs.Encode(structs.RegisterRequestType, req)
if err != nil {
t.Fatalf("err: %v", err)
}
resp := fsm.Apply(makeLog(buf))
if resp != nil {
t.Fatalf("resp: %v", resp)
}
// Verify we are registered
if idx, found, _ := fsm.state.GetNode("foo"); !found {
t.Fatalf("not found!")
} else if idx != 1 {
t.Fatalf("bad index: %d", idx)
}
// Verify service registered
_, services := fsm.state.NodeServices("foo")
if len(services.Services) != 0 {
t.Fatalf("Services: %v", services)
}
}
func TestFSM_RegisterNode_Service(t *testing.T) {
fsm, err := NewFSM(os.Stderr)
if err != nil {
t.Fatalf("err: %v", err)
}
defer fsm.Close()
req := structs.RegisterRequest{
Datacenter: "dc1",
Node: "foo",
Address: "127.0.0.1",
Service: &structs.NodeService{
ID: "db",
Service: "db",
Tag: "master",
Port: 8000,
},
Check: &structs.HealthCheck{
Node: "foo",
CheckID: "db",
Name: "db connectivity",
Status: structs.HealthPassing,
ServiceID: "db",
},
}
buf, err := structs.Encode(structs.RegisterRequestType, req)
if err != nil {
t.Fatalf("err: %v", err)
}
resp := fsm.Apply(makeLog(buf))
if resp != nil {
t.Fatalf("resp: %v", resp)
}
// Verify we are registered
if _, found, _ := fsm.state.GetNode("foo"); !found {
t.Fatalf("not found!")
}
// Verify service registered
_, services := fsm.state.NodeServices("foo")
if _, ok := services.Services["db"]; !ok {
t.Fatalf("not registered!")
}
// Verify check
_, checks := fsm.state.NodeChecks("foo")
if checks[0].CheckID != "db" {
t.Fatalf("not registered!")
}
}
func TestFSM_DeregisterService(t *testing.T) {
fsm, err := NewFSM(os.Stderr)
if err != nil {
t.Fatalf("err: %v", err)
}
defer fsm.Close()
req := structs.RegisterRequest{
Datacenter: "dc1",
Node: "foo",
Address: "127.0.0.1",
Service: &structs.NodeService{
ID: "db",
Service: "db",
Tag: "master",
Port: 8000,
},
}
buf, err := structs.Encode(structs.RegisterRequestType, req)
if err != nil {
t.Fatalf("err: %v", err)
}
resp := fsm.Apply(makeLog(buf))
if resp != nil {
t.Fatalf("resp: %v", resp)
}
dereg := structs.DeregisterRequest{
Datacenter: "dc1",
Node: "foo",
ServiceID: "db",
}
buf, err = structs.Encode(structs.DeregisterRequestType, dereg)
if err != nil {
t.Fatalf("err: %v", err)
}
resp = fsm.Apply(makeLog(buf))
if resp != nil {
t.Fatalf("resp: %v", resp)
}
// Verify we are registered
if _, found, _ := fsm.state.GetNode("foo"); !found {
t.Fatalf("not found!")
}
// Verify service not registered
_, services := fsm.state.NodeServices("foo")
if _, ok := services.Services["db"]; ok {
t.Fatalf("db registered!")
}
}
func TestFSM_DeregisterCheck(t *testing.T) {
fsm, err := NewFSM(os.Stderr)
if err != nil {
t.Fatalf("err: %v", err)
}
defer fsm.Close()
req := structs.RegisterRequest{
Datacenter: "dc1",
Node: "foo",
Address: "127.0.0.1",
Check: &structs.HealthCheck{
Node: "foo",
CheckID: "mem",
Name: "memory util",
Status: structs.HealthPassing,
},
}
buf, err := structs.Encode(structs.RegisterRequestType, req)
if err != nil {
t.Fatalf("err: %v", err)
}
resp := fsm.Apply(makeLog(buf))
if resp != nil {
t.Fatalf("resp: %v", resp)
}
dereg := structs.DeregisterRequest{
Datacenter: "dc1",
Node: "foo",
CheckID: "mem",
}
buf, err = structs.Encode(structs.DeregisterRequestType, dereg)
if err != nil {
t.Fatalf("err: %v", err)
}
resp = fsm.Apply(makeLog(buf))
if resp != nil {
t.Fatalf("resp: %v", resp)
}
// Verify we are registered
if _, found, _ := fsm.state.GetNode("foo"); !found {
t.Fatalf("not found!")
}
// Verify check not registered
_, checks := fsm.state.NodeChecks("foo")
if len(checks) != 0 {
t.Fatalf("check registered!")
}
}
func TestFSM_DeregisterNode(t *testing.T) {
fsm, err := NewFSM(os.Stderr)
if err != nil {
t.Fatalf("err: %v", err)
}
defer fsm.Close()
req := structs.RegisterRequest{
Datacenter: "dc1",
Node: "foo",
Address: "127.0.0.1",
Service: &structs.NodeService{
ID: "db",
Service: "db",
Tag: "master",
Port: 8000,
},
Check: &structs.HealthCheck{
Node: "foo",
CheckID: "db",
Name: "db connectivity",
Status: structs.HealthPassing,
ServiceID: "db",
},
}
buf, err := structs.Encode(structs.RegisterRequestType, req)
if err != nil {
t.Fatalf("err: %v", err)
}
resp := fsm.Apply(makeLog(buf))
if resp != nil {
t.Fatalf("resp: %v", resp)
}
dereg := structs.DeregisterRequest{
Datacenter: "dc1",
Node: "foo",
}
buf, err = structs.Encode(structs.DeregisterRequestType, dereg)
if err != nil {
t.Fatalf("err: %v", err)
}
resp = fsm.Apply(makeLog(buf))
if resp != nil {
t.Fatalf("resp: %v", resp)
}
// Verify we are registered
if _, found, _ := fsm.state.GetNode("foo"); found {
t.Fatalf("found!")
}
// Verify service not registered
_, services := fsm.state.NodeServices("foo")
if services != nil {
t.Fatalf("Services: %v", services)
}
// Verify checks not registered
_, checks := fsm.state.NodeChecks("foo")
if len(checks) != 0 {
t.Fatalf("Services: %v", services)
}
}
func TestFSM_SnapshotRestore(t *testing.T) {
fsm, err := NewFSM(os.Stderr)
if err != nil {
t.Fatalf("err: %v", err)
}
defer fsm.Close()
// Add some state
fsm.state.EnsureNode(1, structs.Node{"foo", "127.0.0.1"})
fsm.state.EnsureNode(2, structs.Node{"baz", "127.0.0.2"})
fsm.state.EnsureService(3, "foo", &structs.NodeService{"web", "web", "", 80})
fsm.state.EnsureService(4, "foo", &structs.NodeService{"db", "db", "primary", 5000})
fsm.state.EnsureService(5, "baz", &structs.NodeService{"web", "web", "", 80})
fsm.state.EnsureService(6, "baz", &structs.NodeService{"db", "db", "secondary", 5000})
fsm.state.EnsureCheck(7, &structs.HealthCheck{
Node: "foo",
CheckID: "web",
Name: "web connectivity",
Status: structs.HealthPassing,
ServiceID: "web",
})
fsm.state.KVSSet(8, &structs.DirEntry{
Key: "/test",
Value: []byte("foo"),
})
// Snapshot
snap, err := fsm.Snapshot()
if err != nil {
t.Fatalf("err: %v", err)
}
defer snap.Release()
// Persist
buf := bytes.NewBuffer(nil)
sink := &MockSink{buf, false}
if err := snap.Persist(sink); err != nil {
t.Fatalf("err: %v", err)
}
// Try to restore on a new FSM
fsm2, err := NewFSM(os.Stderr)
if err != nil {
t.Fatalf("err: %v", err)
}
defer fsm2.Close()
// Do a restore
if err := fsm2.Restore(sink); err != nil {
t.Fatalf("err: %v", err)
}
// Verify the contents
_, nodes := fsm2.state.Nodes()
if len(nodes) != 2 {
t.Fatalf("Bad: %v", nodes)
}
_, fooSrv := fsm2.state.NodeServices("foo")
if len(fooSrv.Services) != 2 {
t.Fatalf("Bad: %v", fooSrv)
}
if fooSrv.Services["db"].Tag != "primary" {
t.Fatalf("Bad: %v", fooSrv)
}
if fooSrv.Services["db"].Port != 5000 {
t.Fatalf("Bad: %v", fooSrv)
}
_, checks := fsm2.state.NodeChecks("foo")
if len(checks) != 1 {
t.Fatalf("Bad: %v", checks)
}
// Verify key is set
_, d, err := fsm.state.KVSGet("/test")
if err != nil {
t.Fatalf("err: %v", err)
}
if string(d.Value) != "foo" {
t.Fatalf("bad: %v", d)
}
}
func TestFSM_KVSSet(t *testing.T) {
fsm, err := NewFSM(os.Stderr)
if err != nil {
t.Fatalf("err: %v", err)
}
defer fsm.Close()
req := structs.KVSRequest{
Datacenter: "dc1",
Op: structs.KVSSet,
DirEnt: structs.DirEntry{
Key: "/test/path",
Flags: 0,
Value: []byte("test"),
},
}
buf, err := structs.Encode(structs.KVSRequestType, req)
if err != nil {
t.Fatalf("err: %v", err)
}
resp := fsm.Apply(makeLog(buf))
if resp != nil {
t.Fatalf("resp: %v", resp)
}
// Verify key is set
_, d, err := fsm.state.KVSGet("/test/path")
if err != nil {
t.Fatalf("err: %v", err)
}
if d == nil {
t.Fatalf("missing")
}
}
func TestFSM_KVSDelete(t *testing.T) {
fsm, err := NewFSM(os.Stderr)
if err != nil {
t.Fatalf("err: %v", err)
}
defer fsm.Close()
req := structs.KVSRequest{
Datacenter: "dc1",
Op: structs.KVSSet,
DirEnt: structs.DirEntry{
Key: "/test/path",
Flags: 0,
Value: []byte("test"),
},
}
buf, err := structs.Encode(structs.KVSRequestType, req)
if err != nil {
t.Fatalf("err: %v", err)
}
resp := fsm.Apply(makeLog(buf))
if resp != nil {
t.Fatalf("resp: %v", resp)
}
// Run the delete
req.Op = structs.KVSDelete
buf, err = structs.Encode(structs.KVSRequestType, req)
if err != nil {
t.Fatalf("err: %v", err)
}
resp = fsm.Apply(makeLog(buf))
if resp != nil {
t.Fatalf("resp: %v", resp)
}
// Verify key is not set
_, d, err := fsm.state.KVSGet("/test/path")
if err != nil {
t.Fatalf("err: %v", err)
}
if d != nil {
t.Fatalf("key present")
}
}
func TestFSM_KVSDeleteTree(t *testing.T) {
fsm, err := NewFSM(os.Stderr)
if err != nil {
t.Fatalf("err: %v", err)
}
defer fsm.Close()
req := structs.KVSRequest{
Datacenter: "dc1",
Op: structs.KVSSet,
DirEnt: structs.DirEntry{
Key: "/test/path",
Flags: 0,
Value: []byte("test"),
},
}
buf, err := structs.Encode(structs.KVSRequestType, req)
if err != nil {
t.Fatalf("err: %v", err)
}
resp := fsm.Apply(makeLog(buf))
if resp != nil {
t.Fatalf("resp: %v", resp)
}
// Run the delete tree
req.Op = structs.KVSDeleteTree
req.DirEnt.Key = "/test"
buf, err = structs.Encode(structs.KVSRequestType, req)
if err != nil {
t.Fatalf("err: %v", err)
}
resp = fsm.Apply(makeLog(buf))
if resp != nil {
t.Fatalf("resp: %v", resp)
}
// Verify key is not set
_, d, err := fsm.state.KVSGet("/test/path")
if err != nil {
t.Fatalf("err: %v", err)
}
if d != nil {
t.Fatalf("key present")
}
}
func TestFSM_KVSCheckAndSet(t *testing.T) {
fsm, err := NewFSM(os.Stderr)
if err != nil {
t.Fatalf("err: %v", err)
}
defer fsm.Close()
req := structs.KVSRequest{
Datacenter: "dc1",
Op: structs.KVSSet,
DirEnt: structs.DirEntry{
Key: "/test/path",
Flags: 0,
Value: []byte("test"),
},
}
buf, err := structs.Encode(structs.KVSRequestType, req)
if err != nil {
t.Fatalf("err: %v", err)
}
resp := fsm.Apply(makeLog(buf))
if resp != nil {
t.Fatalf("resp: %v", resp)
}
// Verify key is set
_, d, err := fsm.state.KVSGet("/test/path")
if err != nil {
t.Fatalf("err: %v", err)
}
if d == nil {
t.Fatalf("key missing")
}
// Run the check-and-set
req.Op = structs.KVSCAS
req.DirEnt.ModifyIndex = d.ModifyIndex
req.DirEnt.Value = []byte("zip")
buf, err = structs.Encode(structs.KVSRequestType, req)
if err != nil {
t.Fatalf("err: %v", err)
}
resp = fsm.Apply(makeLog(buf))
if resp.(bool) != true {
t.Fatalf("resp: %v", resp)
}
// Verify key is updated
_, d, err = fsm.state.KVSGet("/test/path")
if err != nil {
t.Fatalf("err: %v", err)
}
if string(d.Value) != "zip" {
t.Fatalf("bad: %v", d)
}
}