Consul is a distributed, highly available, and data center aware solution to connect and configure applications across dynamic, distributed infrastructure.
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package command
import (
"fmt"
"strings"
"testing"
"time"
consulapi "github.com/hashicorp/consul/api"
"github.com/hashicorp/consul/command/agent"
"github.com/hashicorp/consul/command/base"
"github.com/hashicorp/consul/testutil/retry"
"github.com/mitchellh/cli"
)
func testExecCommand(t *testing.T) (*cli.MockUi, *ExecCommand) {
ui := cli.NewMockUi()
return ui, &ExecCommand{
Command: base.Command{
UI: ui,
Flags: base.FlagSetHTTP,
},
}
}
func TestExecCommand_implements(t *testing.T) {
t.Parallel()
var _ cli.Command = &ExecCommand{}
}
func TestExecCommandRun(t *testing.T) {
t.Parallel()
cfg := agent.TestConfig()
cfg.DisableRemoteExec = agent.Bool(false)
a := agent.NewTestAgent(t.Name(), cfg)
defer a.Shutdown()
ui, c := testExecCommand(t)
args := []string{"-http-addr=" + a.HTTPAddr(), "-wait=500ms", "uptime"}
code := c.Run(args)
if code != 0 {
t.Fatalf("bad: %d. Error:%#v (std)Output:%#v", code, ui.ErrorWriter.String(), ui.OutputWriter.String())
}
if !strings.Contains(ui.OutputWriter.String(), "load") {
t.Fatalf("bad: %#v", ui.OutputWriter.String())
}
}
func TestExecCommandRun_CrossDC(t *testing.T) {
t.Parallel()
cfg1 := agent.TestConfig()
cfg1.DisableRemoteExec = agent.Bool(false)
a1 := agent.NewTestAgent(t.Name(), cfg1)
defer a1.Shutdown()
cfg2 := agent.TestConfig()
cfg2.Datacenter = "dc2"
cfg2.DisableRemoteExec = agent.Bool(false)
a2 := agent.NewTestAgent(t.Name(), cfg2)
defer a1.Shutdown()
// Join over the WAN
wanAddr := fmt.Sprintf("%s:%d", a1.Config.BindAddr, a1.Config.Ports.SerfWan)
n, err := a2.JoinWAN([]string{wanAddr})
if err != nil {
t.Fatalf("err: %v", err)
}
if n != 1 {
t.Fatalf("bad %d", n)
}
ui, c := testExecCommand(t)
args := []string{"-http-addr=" + a1.HTTPAddr(), "-wait=500ms", "-datacenter=dc2", "uptime"}
code := c.Run(args)
if code != 0 {
t.Fatalf("bad: %d. %#v", code, ui.ErrorWriter.String())
}
if !strings.Contains(ui.OutputWriter.String(), "load") {
t.Fatalf("bad: %#v", ui.OutputWriter.String())
}
}
func TestExecCommand_Validate(t *testing.T) {
t.Parallel()
conf := &rExecConf{}
err := conf.validate()
if err != nil {
t.Fatalf("err: %v", err)
}
conf.node = "("
err = conf.validate()
if err == nil {
t.Fatalf("err: %v", err)
}
conf.node = ""
conf.service = "("
err = conf.validate()
if err == nil {
t.Fatalf("err: %v", err)
}
conf.service = "()"
conf.tag = "("
err = conf.validate()
if err == nil {
t.Fatalf("err: %v", err)
}
conf.service = ""
conf.tag = "foo"
err = conf.validate()
if err == nil {
t.Fatalf("err: %v", err)
}
}
func TestExecCommand_Sessions(t *testing.T) {
t.Parallel()
cfg := agent.TestConfig()
cfg.DisableRemoteExec = agent.Bool(false)
a := agent.NewTestAgent(t.Name(), cfg)
defer a.Shutdown()
client := a.Client()
_, c := testExecCommand(t)
c.client = client
id, err := c.createSession()
if err != nil {
t.Fatalf("err: %v", err)
}
se, _, err := client.Session().Info(id, nil)
if err != nil {
t.Fatalf("err: %v", err)
}
if se == nil || se.Name != "Remote Exec" {
t.Fatalf("bad: %v", se)
}
c.sessionID = id
err = c.destroySession()
if err != nil {
t.Fatalf("err: %v", err)
}
se, _, err = client.Session().Info(id, nil)
if err != nil {
t.Fatalf("err: %v", err)
}
if se != nil {
t.Fatalf("bad: %v", se)
}
}
func TestExecCommand_Sessions_Foreign(t *testing.T) {
t.Parallel()
cfg := agent.TestConfig()
cfg.DisableRemoteExec = agent.Bool(false)
a := agent.NewTestAgent(t.Name(), cfg)
defer a.Shutdown()
client := a.Client()
_, c := testExecCommand(t)
c.client = client
c.conf.foreignDC = true
c.conf.localDC = "dc1"
c.conf.localNode = "foo"
var id string
retry.Run(t, func(r *retry.R) {
var err error
id, err = c.createSession()
if err != nil {
r.Fatal(err)
}
if id == "" {
r.Fatal("no id")
}
})
se, _, err := client.Session().Info(id, nil)
if err != nil {
t.Fatalf("err: %v", err)
}
if se == nil || se.Name != "Remote Exec via foo@dc1" {
t.Fatalf("bad: %v", se)
}
c.sessionID = id
err = c.destroySession()
if err != nil {
t.Fatalf("err: %v", err)
}
se, _, err = client.Session().Info(id, nil)
if err != nil {
t.Fatalf("err: %v", err)
}
if se != nil {
t.Fatalf("bad: %v", se)
}
}
func TestExecCommand_UploadDestroy(t *testing.T) {
t.Parallel()
cfg := agent.TestConfig()
cfg.DisableRemoteExec = agent.Bool(false)
a := agent.NewTestAgent(t.Name(), cfg)
defer a.Shutdown()
client := a.Client()
_, c := testExecCommand(t)
c.client = client
id, err := c.createSession()
if err != nil {
t.Fatalf("err: %v", err)
}
c.sessionID = id
c.conf.prefix = "_rexec"
c.conf.cmd = "uptime"
c.conf.wait = time.Second
buf, err := c.makeRExecSpec()
if err != nil {
t.Fatalf("err: %v", err)
}
err = c.uploadPayload(buf)
if err != nil {
t.Fatalf("err: %v", err)
}
pair, _, err := client.KV().Get("_rexec/"+id+"/job", nil)
if err != nil {
t.Fatalf("err: %v", err)
}
if pair == nil || len(pair.Value) == 0 {
t.Fatalf("missing job spec")
}
err = c.destroyData()
if err != nil {
t.Fatalf("err: %v", err)
}
pair, _, err = client.KV().Get("_rexec/"+id+"/job", nil)
if err != nil {
t.Fatalf("err: %v", err)
}
if pair != nil {
t.Fatalf("should be destroyed")
}
}
func TestExecCommand_StreamResults(t *testing.T) {
t.Parallel()
cfg := agent.TestConfig()
cfg.DisableRemoteExec = agent.Bool(false)
a := agent.NewTestAgent(t.Name(), cfg)
defer a.Shutdown()
client := a.Client()
_, c := testExecCommand(t)
c.client = client
c.conf.prefix = "_rexec"
id, err := c.createSession()
if err != nil {
t.Fatalf("err: %v", err)
}
c.sessionID = id
ackCh := make(chan rExecAck, 128)
heartCh := make(chan rExecHeart, 128)
outputCh := make(chan rExecOutput, 128)
exitCh := make(chan rExecExit, 128)
doneCh := make(chan struct{})
errCh := make(chan struct{}, 1)
defer close(doneCh)
go c.streamResults(doneCh, ackCh, heartCh, outputCh, exitCh, errCh)
prefix := "_rexec/" + id + "/"
ok, _, err := client.KV().Acquire(&consulapi.KVPair{
Key: prefix + "foo/ack",
Session: id,
}, nil)
if err != nil {
t.Fatalf("err: %v", err)
}
if !ok {
t.Fatalf("should be ok bro")
}
select {
case a := <-ackCh:
if a.Node != "foo" {
t.Fatalf("bad: %#v", a)
}
case <-time.After(50 * time.Millisecond):
t.Fatalf("timeout")
}
ok, _, err = client.KV().Acquire(&consulapi.KVPair{
Key: prefix + "foo/exit",
Value: []byte("127"),
Session: id,
}, nil)
if err != nil {
t.Fatalf("err: %v", err)
}
if !ok {
t.Fatalf("should be ok bro")
}
select {
case e := <-exitCh:
if e.Node != "foo" || e.Code != 127 {
t.Fatalf("bad: %#v", e)
}
case <-time.After(50 * time.Millisecond):
t.Fatalf("timeout")
}
// Random key, should ignore
ok, _, err = client.KV().Acquire(&consulapi.KVPair{
Key: prefix + "foo/random",
Session: id,
}, nil)
if err != nil {
t.Fatalf("err: %v", err)
}
if !ok {
t.Fatalf("should be ok bro")
}
// Output heartbeat
ok, _, err = client.KV().Acquire(&consulapi.KVPair{
Key: prefix + "foo/out/00000",
Session: id,
}, nil)
if err != nil {
t.Fatalf("err: %v", err)
}
if !ok {
t.Fatalf("should be ok bro")
}
select {
case h := <-heartCh:
if h.Node != "foo" {
t.Fatalf("bad: %#v", h)
}
case <-time.After(50 * time.Millisecond):
t.Fatalf("timeout")
}
// Output value
ok, _, err = client.KV().Acquire(&consulapi.KVPair{
Key: prefix + "foo/out/00001",
Value: []byte("test"),
Session: id,
}, nil)
if err != nil {
t.Fatalf("err: %v", err)
}
if !ok {
t.Fatalf("should be ok bro")
}
select {
case o := <-outputCh:
if o.Node != "foo" || string(o.Output) != "test" {
t.Fatalf("bad: %#v", o)
}
case <-time.After(50 * time.Millisecond):
t.Fatalf("timeout")
}
}