open-nomad/command/agent/agent_test.go

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package agent
import (
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"fmt"
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"io/ioutil"
"os"
"strings"
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"sync/atomic"
"testing"
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"time"
"github.com/hashicorp/nomad/nomad"
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sconfig "github.com/hashicorp/nomad/nomad/structs/config"
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)
var nextPort uint32 = 17000
func getPort() int {
return int(atomic.AddUint32(&nextPort, 1))
}
func tmpDir(t testing.TB) string {
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dir, err := ioutil.TempDir("", "nomad")
if err != nil {
t.Fatalf("err: %v", err)
}
return dir
}
func makeAgent(t testing.TB, cb func(*Config)) (string, *Agent) {
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dir := tmpDir(t)
conf := DevConfig()
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// Customize the server configuration
config := nomad.DefaultConfig()
conf.NomadConfig = config
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// Bind and set ports
conf.BindAddr = "127.0.0.1"
conf.Ports = &Ports{
HTTP: getPort(),
RPC: getPort(),
Serf: getPort(),
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}
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conf.NodeName = fmt.Sprintf("Node %d", conf.Ports.RPC)
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conf.Consul = sconfig.DefaultConsulConfig()
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// Tighten the Serf timing
config.SerfConfig.MemberlistConfig.SuspicionMult = 2
config.SerfConfig.MemberlistConfig.RetransmitMult = 2
config.SerfConfig.MemberlistConfig.ProbeTimeout = 50 * time.Millisecond
config.SerfConfig.MemberlistConfig.ProbeInterval = 100 * time.Millisecond
config.SerfConfig.MemberlistConfig.GossipInterval = 100 * time.Millisecond
// Tighten the Raft timing
config.RaftConfig.LeaderLeaseTimeout = 20 * time.Millisecond
config.RaftConfig.HeartbeatTimeout = 40 * time.Millisecond
config.RaftConfig.ElectionTimeout = 40 * time.Millisecond
config.RaftConfig.StartAsLeader = true
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config.RaftTimeout = 500 * time.Millisecond
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if cb != nil {
cb(conf)
}
agent, err := NewAgent(conf, os.Stderr)
if err != nil {
os.RemoveAll(dir)
t.Fatalf("err: %v", err)
}
return dir, agent
}
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func TestAgent_RPCPing(t *testing.T) {
dir, agent := makeAgent(t, nil)
defer os.RemoveAll(dir)
defer agent.Shutdown()
var out struct{}
if err := agent.RPC("Status.Ping", struct{}{}, &out); err != nil {
t.Fatalf("err: %v", err)
}
}
func TestAgent_ServerConfig(t *testing.T) {
conf := DefaultConfig()
a := &Agent{config: conf}
// Returns error on bad serf addr
conf.AdvertiseAddrs.Serf = "nope"
_, err := a.serverConfig()
if err == nil || !strings.Contains(err.Error(), "serf advertise") {
t.Fatalf("expected serf address error, got: %#v", err)
}
conf.AdvertiseAddrs.Serf = "127.0.0.1:4000"
// Returns error on bad rpc addr
conf.AdvertiseAddrs.RPC = "nope"
_, err = a.serverConfig()
if err == nil || !strings.Contains(err.Error(), "rpc advertise") {
t.Fatalf("expected rpc address error, got: %#v", err)
}
conf.AdvertiseAddrs.RPC = "127.0.0.1:4001"
conf.AdvertiseAddrs.HTTP = "10.10.11.1:4005"
// Parses the advertise addrs correctly
out, err := a.serverConfig()
if err != nil {
t.Fatalf("err: %s", err)
}
serfAddr := out.SerfConfig.MemberlistConfig.AdvertiseAddr
if serfAddr != "127.0.0.1" {
t.Fatalf("expect 127.0.0.1, got: %s", serfAddr)
}
serfPort := out.SerfConfig.MemberlistConfig.AdvertisePort
if serfPort != 4000 {
t.Fatalf("expected 4000, got: %d", serfPort)
}
if addr := out.RPCAdvertise; addr.IP.String() != "127.0.0.1" || addr.Port != 4001 {
t.Fatalf("bad rpc advertise addr: %#v", addr)
}
if addr := a.serverHTTPAddr; addr != "10.10.11.1:4005" {
t.Fatalf("expect 10.11.11.1:4005, got: %v", addr)
}
if addr := a.serverRPCAddr; addr != "127.0.0.1:4001" {
t.Fatalf("expect 127.0.0.1:4001, got: %v", addr)
}
// Sets up the ports properly
conf.Ports.RPC = 4003
conf.Ports.Serf = 4004
out, err = a.serverConfig()
if err != nil {
t.Fatalf("err: %s", err)
}
if addr := out.RPCAddr.Port; addr != 4003 {
t.Fatalf("expect 4003, got: %d", out.RPCAddr.Port)
}
if port := out.SerfConfig.MemberlistConfig.BindPort; port != 4004 {
t.Fatalf("expect 4004, got: %d", port)
}
// Prefers advertise over bind addr
conf.BindAddr = "127.0.0.3"
conf.Addresses.RPC = "127.0.0.2"
conf.Addresses.Serf = "127.0.0.2"
conf.Addresses.HTTP = "127.0.0.2"
conf.AdvertiseAddrs.HTTP = ""
out, err = a.serverConfig()
if err != nil {
t.Fatalf("err: %s", err)
}
if addr := out.RPCAddr.IP.String(); addr != "127.0.0.2" {
t.Fatalf("expect 127.0.0.2, got: %s", addr)
}
if addr := out.SerfConfig.MemberlistConfig.BindAddr; addr != "127.0.0.2" {
t.Fatalf("expect 127.0.0.2, got: %s", addr)
}
if addr := a.serverHTTPAddr; addr != "127.0.0.2:4646" {
t.Fatalf("expect 127.0.0.2:4646, got: %s", addr)
}
// NOTE: AdvertiseAddr > Addresses > BindAddr > Defaults
if addr := a.serverRPCAddr; addr != "127.0.0.1:4001" {
t.Fatalf("expect 127.0.0.1:4001, got: %s", addr)
}
if addr := a.serverSerfAddr; addr != "127.0.0.1:4000" {
t.Fatalf("expect 127.0.0.1:4000, got: %s", addr)
}
conf.Server.NodeGCThreshold = "42g"
out, err = a.serverConfig()
if err == nil || !strings.Contains(err.Error(), "unknown unit") {
t.Fatalf("expected unknown unit error, got: %#v", err)
}
conf.Server.NodeGCThreshold = "10s"
out, err = a.serverConfig()
if threshold := out.NodeGCThreshold; threshold != time.Second*10 {
t.Fatalf("expect 10s, got: %s", threshold)
}
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conf.Server.HeartbeatGrace = "42g"
out, err = a.serverConfig()
if err == nil || !strings.Contains(err.Error(), "unknown unit") {
t.Fatalf("expected unknown unit error, got: %#v", err)
}
conf.Server.HeartbeatGrace = "37s"
out, err = a.serverConfig()
if threshold := out.HeartbeatGrace; threshold != time.Second*37 {
t.Fatalf("expect 37s, got: %s", threshold)
}
// Defaults to the global bind addr
conf.Addresses.RPC = ""
conf.Addresses.Serf = ""
conf.Addresses.HTTP = ""
conf.AdvertiseAddrs.RPC = ""
conf.AdvertiseAddrs.HTTP = ""
conf.AdvertiseAddrs.Serf = ""
conf.Ports.HTTP = 4646
conf.Ports.RPC = 4647
conf.Ports.Serf = 4648
out, err = a.serverConfig()
if err != nil {
t.Fatalf("err: %s", err)
}
if addr := out.RPCAddr.IP.String(); addr != "127.0.0.3" {
t.Fatalf("expect 127.0.0.3, got: %s", addr)
}
if addr := out.SerfConfig.MemberlistConfig.BindAddr; addr != "127.0.0.3" {
t.Fatalf("expect 127.0.0.3, got: %s", addr)
}
if addr := a.serverHTTPAddr; addr != "127.0.0.3:4646" {
t.Fatalf("expect 127.0.0.3:4646, got: %s", addr)
}
if addr := a.serverRPCAddr; addr != "127.0.0.3:4647" {
t.Fatalf("expect 127.0.0.3:4647, got: %s", addr)
}
if addr := a.serverSerfAddr; addr != "127.0.0.3:4648" {
t.Fatalf("expect 127.0.0.3:4648, got: %s", addr)
}
// Properly handles the bootstrap flags
conf.Server.BootstrapExpect = 1
out, err = a.serverConfig()
if err != nil {
t.Fatalf("err: %s", err)
}
if !out.Bootstrap {
t.Fatalf("should have set bootstrap mode")
}
if out.BootstrapExpect != 0 {
t.Fatalf("boostrap expect should be 0")
}
conf.Server.BootstrapExpect = 3
out, err = a.serverConfig()
if err != nil {
t.Fatalf("err: %s", err)
}
if out.Bootstrap {
t.Fatalf("bootstrap mode should be disabled")
}
if out.BootstrapExpect != 3 {
t.Fatalf("should have bootstrap-expect = 3")
}
}
func TestAgent_ClientConfig(t *testing.T) {
conf := DefaultConfig()
a := &Agent{config: conf}
conf.Client.Enabled = true
conf.Addresses.HTTP = "127.0.0.1"
conf.Ports.HTTP = 5678
c, err := a.clientConfig()
if err != nil {
t.Fatalf("got err: %v", err)
}
expectedHttpAddr := "127.0.0.1:5678"
if c.Node.HTTPAddr != expectedHttpAddr {
t.Fatalf("Expected http addr: %v, got: %v", expectedHttpAddr, c.Node.HTTPAddr)
}
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conf = DefaultConfig()
a = &Agent{config: conf}
conf.Client.Enabled = true
conf.Addresses.HTTP = "127.0.0.1"
c, err = a.clientConfig()
if err != nil {
t.Fatalf("got err: %v", err)
}
expectedHttpAddr = "127.0.0.1:4646"
if c.Node.HTTPAddr != expectedHttpAddr {
t.Fatalf("Expected http addr: %v, got: %v", expectedHttpAddr, c.Node.HTTPAddr)
}
}