668 lines
15 KiB
Go
668 lines
15 KiB
Go
package consul
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import (
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"bytes"
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"net"
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"os"
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"sync"
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"testing"
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"time"
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"github.com/hashicorp/consul/agent/structs"
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"github.com/hashicorp/consul/lib/freeport"
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"github.com/hashicorp/consul/testrpc"
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"github.com/hashicorp/consul/testutil"
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"github.com/hashicorp/consul/testutil/retry"
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"github.com/hashicorp/net-rpc-msgpackrpc"
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"github.com/hashicorp/serf/serf"
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)
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func testClientConfig(t *testing.T) (string, *Config) {
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dir := testutil.TempDir(t, "consul")
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config := DefaultConfig()
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config.Datacenter = "dc1"
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config.DataDir = dir
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config.NodeName = uniqueNodeName(t.Name())
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config.RPCAddr = &net.TCPAddr{
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IP: []byte{127, 0, 0, 1},
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Port: freeport.Get(1)[0],
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}
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config.SerfLANConfig.MemberlistConfig.BindAddr = "127.0.0.1"
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config.SerfLANConfig.MemberlistConfig.BindPort = freeport.Get(1)[0]
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config.SerfLANConfig.MemberlistConfig.ProbeTimeout = 200 * time.Millisecond
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config.SerfLANConfig.MemberlistConfig.ProbeInterval = time.Second
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config.SerfLANConfig.MemberlistConfig.GossipInterval = 100 * time.Millisecond
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return dir, config
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}
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func testClient(t *testing.T) (string, *Client) {
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return testClientWithConfig(t, func(c *Config) {
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c.Datacenter = "dc1"
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c.NodeName = uniqueNodeName(t.Name())
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})
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}
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func testClientDC(t *testing.T, dc string) (string, *Client) {
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return testClientWithConfig(t, func(c *Config) {
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c.Datacenter = dc
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c.NodeName = uniqueNodeName(t.Name())
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})
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}
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func testClientWithConfig(t *testing.T, cb func(c *Config)) (string, *Client) {
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dir, config := testClientConfig(t)
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if cb != nil {
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cb(config)
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}
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client, err := NewClient(config)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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return dir, client
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}
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func TestClient_StartStop(t *testing.T) {
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t.Parallel()
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dir, client := testClient(t)
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defer os.RemoveAll(dir)
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if err := client.Shutdown(); err != nil {
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t.Fatalf("err: %v", err)
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}
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}
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func TestClient_JoinLAN(t *testing.T) {
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t.Parallel()
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dir1, s1 := testServer(t)
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defer os.RemoveAll(dir1)
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defer s1.Shutdown()
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dir2, c1 := testClient(t)
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defer os.RemoveAll(dir2)
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defer c1.Shutdown()
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// Try to join
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joinLAN(t, c1, s1)
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retry.Run(t, func(r *retry.R) {
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if got, want := c1.routers.NumServers(), 1; got != want {
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r.Fatalf("got %d servers want %d", got, want)
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}
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if got, want := len(s1.LANMembers()), 2; got != want {
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r.Fatalf("got %d server LAN members want %d", got, want)
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}
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if got, want := len(c1.LANMembers()), 2; got != want {
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r.Fatalf("got %d client LAN members want %d", got, want)
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}
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})
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}
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func TestClient_JoinLAN_Invalid(t *testing.T) {
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t.Parallel()
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dir1, s1 := testServer(t)
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defer os.RemoveAll(dir1)
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defer s1.Shutdown()
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dir2, c1 := testClientDC(t, "other")
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defer os.RemoveAll(dir2)
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defer c1.Shutdown()
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// Try to join
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if _, err := c1.JoinLAN([]string{joinAddrLAN(s1)}); err == nil {
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t.Fatal("should error")
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}
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time.Sleep(50 * time.Millisecond)
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if len(s1.LANMembers()) != 1 {
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t.Fatalf("should not join")
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}
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if len(c1.LANMembers()) != 1 {
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t.Fatalf("should not join")
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}
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}
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func TestClient_JoinWAN_Invalid(t *testing.T) {
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t.Parallel()
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dir1, s1 := testServer(t)
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defer os.RemoveAll(dir1)
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defer s1.Shutdown()
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dir2, c1 := testClientDC(t, "dc2")
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defer os.RemoveAll(dir2)
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defer c1.Shutdown()
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// Try to join
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if _, err := c1.JoinLAN([]string{joinAddrWAN(s1)}); err == nil {
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t.Fatal("should error")
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}
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time.Sleep(50 * time.Millisecond)
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if len(s1.WANMembers()) != 1 {
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t.Fatalf("should not join")
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}
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if len(c1.LANMembers()) != 1 {
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t.Fatalf("should not join")
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}
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}
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func TestClient_RPC(t *testing.T) {
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t.Parallel()
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dir1, s1 := testServer(t)
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defer os.RemoveAll(dir1)
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defer s1.Shutdown()
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dir2, c1 := testClient(t)
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defer os.RemoveAll(dir2)
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defer c1.Shutdown()
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// Try an RPC
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var out struct{}
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if err := c1.RPC("Status.Ping", struct{}{}, &out); err != structs.ErrNoServers {
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t.Fatalf("err: %v", err)
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}
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// Try to join
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joinLAN(t, c1, s1)
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// Check the members
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if len(s1.LANMembers()) != 2 {
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t.Fatalf("bad len")
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}
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if len(c1.LANMembers()) != 2 {
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t.Fatalf("bad len")
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}
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// RPC should succeed
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retry.Run(t, func(r *retry.R) {
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if err := c1.RPC("Status.Ping", struct{}{}, &out); err != nil {
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r.Fatal("ping failed", err)
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}
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})
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}
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type leaderFailer struct {
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totalCalls int
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onceCalls int
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}
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func (l *leaderFailer) Always(args struct{}, reply *struct{}) error {
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l.totalCalls++
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return structs.ErrNoLeader
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}
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func (l *leaderFailer) Once(args struct{}, reply *struct{}) error {
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l.totalCalls++
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l.onceCalls++
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switch {
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case l.onceCalls == 1:
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return structs.ErrNoLeader
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default:
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return nil
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}
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}
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func TestClient_RPC_Retry(t *testing.T) {
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t.Parallel()
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dir1, s1 := testServer(t)
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defer os.RemoveAll(dir1)
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defer s1.Shutdown()
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dir2, c1 := testClientWithConfig(t, func(c *Config) {
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c.Datacenter = "dc1"
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c.NodeName = uniqueNodeName(t.Name())
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c.RPCHoldTimeout = 2 * time.Second
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})
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defer os.RemoveAll(dir2)
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defer c1.Shutdown()
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joinLAN(t, c1, s1)
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retry.Run(t, func(r *retry.R) {
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var out struct{}
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if err := c1.RPC("Status.Ping", struct{}{}, &out); err != nil {
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r.Fatalf("err: %v", err)
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}
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})
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failer := &leaderFailer{}
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if err := s1.RegisterEndpoint("Fail", failer); err != nil {
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t.Fatalf("err: %v", err)
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}
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var out struct{}
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if err := c1.RPC("Fail.Always", struct{}{}, &out); !structs.IsErrNoLeader(err) {
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t.Fatalf("err: %v", err)
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}
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if got, want := failer.totalCalls, 2; got < want {
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t.Fatalf("got %d want >= %d", got, want)
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}
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if err := c1.RPC("Fail.Once", struct{}{}, &out); err != nil {
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t.Fatalf("err: %v", err)
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}
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if got, want := failer.onceCalls, 2; got < want {
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t.Fatalf("got %d want >= %d", got, want)
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}
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if got, want := failer.totalCalls, 4; got < want {
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t.Fatalf("got %d want >= %d", got, want)
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}
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}
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func TestClient_RPC_Pool(t *testing.T) {
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t.Parallel()
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dir1, s1 := testServer(t)
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defer os.RemoveAll(dir1)
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defer s1.Shutdown()
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dir2, c1 := testClient(t)
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defer os.RemoveAll(dir2)
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defer c1.Shutdown()
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// Try to join.
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joinLAN(t, c1, s1)
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// Wait for both agents to finish joining
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retry.Run(t, func(r *retry.R) {
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if got, want := len(s1.LANMembers()), 2; got != want {
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r.Fatalf("got %d server LAN members want %d", got, want)
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}
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if got, want := len(c1.LANMembers()), 2; got != want {
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r.Fatalf("got %d client LAN members want %d", got, want)
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}
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})
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// Blast out a bunch of RPC requests at the same time to try to get
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// contention opening new connections.
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var wg sync.WaitGroup
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for i := 0; i < 150; i++ {
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wg.Add(1)
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go func() {
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defer wg.Done()
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var out struct{}
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retry.Run(t, func(r *retry.R) {
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if err := c1.RPC("Status.Ping", struct{}{}, &out); err != nil {
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r.Fatal("ping failed", err)
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}
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})
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}()
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}
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wg.Wait()
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}
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func TestClient_RPC_ConsulServerPing(t *testing.T) {
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t.Parallel()
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var servers []*Server
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var serverDirs []string
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const numServers = 5
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for n := 0; n < numServers; n++ {
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bootstrap := n == 0
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dir, s := testServerDCBootstrap(t, "dc1", bootstrap)
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defer os.RemoveAll(dir)
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defer s.Shutdown()
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servers = append(servers, s)
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serverDirs = append(serverDirs, dir)
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}
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const numClients = 1
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clientDir, c := testClient(t)
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defer os.RemoveAll(clientDir)
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defer c.Shutdown()
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// Join all servers.
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for _, s := range servers {
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joinLAN(t, c, s)
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}
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for _, s := range servers {
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retry.Run(t, func(r *retry.R) { r.Check(wantPeers(s, numServers)) })
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}
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// Sleep to allow Serf to sync, shuffle, and let the shuffle complete
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c.routers.ResetRebalanceTimer()
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time.Sleep(time.Second)
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if len(c.LANMembers()) != numServers+numClients {
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t.Errorf("bad len: %d", len(c.LANMembers()))
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}
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for _, s := range servers {
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if len(s.LANMembers()) != numServers+numClients {
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t.Errorf("bad len: %d", len(s.LANMembers()))
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}
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}
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// Ping each server in the list
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var pingCount int
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for range servers {
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time.Sleep(200 * time.Millisecond)
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s := c.routers.FindServer()
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ok, err := c.connPool.Ping(s.Datacenter, s.Addr, s.Version, s.UseTLS)
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if !ok {
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t.Errorf("Unable to ping server %v: %s", s.String(), err)
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}
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pingCount++
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// Artificially fail the server in order to rotate the server
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// list
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c.routers.NotifyFailedServer(s)
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}
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if pingCount != numServers {
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t.Errorf("bad len: %d/%d", pingCount, numServers)
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}
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}
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func TestClient_RPC_TLS(t *testing.T) {
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t.Parallel()
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dir1, conf1 := testServerConfig(t)
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conf1.VerifyIncoming = true
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conf1.VerifyOutgoing = true
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configureTLS(conf1)
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s1, err := NewServer(conf1)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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defer os.RemoveAll(dir1)
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defer s1.Shutdown()
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dir2, conf2 := testClientConfig(t)
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conf2.VerifyOutgoing = true
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configureTLS(conf2)
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c1, err := NewClient(conf2)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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defer os.RemoveAll(dir2)
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defer c1.Shutdown()
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// Try an RPC
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var out struct{}
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if err := c1.RPC("Status.Ping", struct{}{}, &out); err != structs.ErrNoServers {
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t.Fatalf("err: %v", err)
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}
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// Try to join
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joinLAN(t, c1, s1)
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// Wait for joins to finish/RPC to succeed
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retry.Run(t, func(r *retry.R) {
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if got, want := len(s1.LANMembers()), 2; got != want {
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r.Fatalf("got %d server LAN members want %d", got, want)
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}
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if got, want := len(c1.LANMembers()), 2; got != want {
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r.Fatalf("got %d client LAN members want %d", got, want)
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}
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if err := c1.RPC("Status.Ping", struct{}{}, &out); err != nil {
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r.Fatal("ping failed", err)
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}
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})
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}
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func TestClient_RPC_RateLimit(t *testing.T) {
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t.Parallel()
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dir1, conf1 := testServerConfig(t)
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s1, err := NewServer(conf1)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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defer os.RemoveAll(dir1)
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defer s1.Shutdown()
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testrpc.WaitForLeader(t, s1.RPC, "dc1")
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dir2, conf2 := testClientConfig(t)
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conf2.RPCRate = 2
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conf2.RPCMaxBurst = 2
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c1, err := NewClient(conf2)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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defer os.RemoveAll(dir2)
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defer c1.Shutdown()
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joinLAN(t, c1, s1)
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retry.Run(t, func(r *retry.R) {
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var out struct{}
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if err := c1.RPC("Status.Ping", struct{}{}, &out); err != structs.ErrRPCRateExceeded {
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r.Fatalf("err: %v", err)
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}
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})
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}
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func TestClient_SnapshotRPC(t *testing.T) {
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t.Parallel()
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dir1, s1 := testServer(t)
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defer os.RemoveAll(dir1)
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defer s1.Shutdown()
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dir2, c1 := testClient(t)
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defer os.RemoveAll(dir2)
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defer c1.Shutdown()
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// Wait for the leader
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testrpc.WaitForLeader(t, s1.RPC, "dc1")
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// Try to join.
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joinLAN(t, c1, s1)
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// Wait until we've got a healthy server.
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retry.Run(t, func(r *retry.R) {
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if got, want := c1.routers.NumServers(), 1; got != want {
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r.Fatalf("got %d servers want %d", got, want)
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}
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})
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// Take a snapshot.
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var snap bytes.Buffer
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args := structs.SnapshotRequest{
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Datacenter: "dc1",
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Op: structs.SnapshotSave,
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}
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if err := c1.SnapshotRPC(&args, bytes.NewReader([]byte("")), &snap, nil); err != nil {
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t.Fatalf("err: %v", err)
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}
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// Restore a snapshot.
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args.Op = structs.SnapshotRestore
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if err := c1.SnapshotRPC(&args, &snap, nil, nil); err != nil {
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t.Fatalf("err: %v", err)
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}
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}
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func TestClient_SnapshotRPC_RateLimit(t *testing.T) {
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t.Parallel()
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dir1, s1 := testServer(t)
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defer os.RemoveAll(dir1)
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defer s1.Shutdown()
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testrpc.WaitForLeader(t, s1.RPC, "dc1")
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dir2, conf1 := testClientConfig(t)
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conf1.RPCRate = 2
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conf1.RPCMaxBurst = 2
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c1, err := NewClient(conf1)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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defer os.RemoveAll(dir2)
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defer c1.Shutdown()
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joinLAN(t, c1, s1)
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retry.Run(t, func(r *retry.R) {
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if got, want := c1.routers.NumServers(), 1; got != want {
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r.Fatalf("got %d servers want %d", got, want)
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}
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})
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retry.Run(t, func(r *retry.R) {
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var snap bytes.Buffer
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args := structs.SnapshotRequest{
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Datacenter: "dc1",
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Op: structs.SnapshotSave,
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}
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if err := c1.SnapshotRPC(&args, bytes.NewReader([]byte("")), &snap, nil); err != structs.ErrRPCRateExceeded {
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r.Fatalf("err: %v", err)
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}
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})
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}
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func TestClient_SnapshotRPC_TLS(t *testing.T) {
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t.Parallel()
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dir1, conf1 := testServerConfig(t)
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conf1.VerifyIncoming = true
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conf1.VerifyOutgoing = true
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configureTLS(conf1)
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s1, err := NewServer(conf1)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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defer os.RemoveAll(dir1)
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defer s1.Shutdown()
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dir2, conf2 := testClientConfig(t)
|
|
conf2.VerifyOutgoing = true
|
|
configureTLS(conf2)
|
|
c1, err := NewClient(conf2)
|
|
if err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
defer os.RemoveAll(dir2)
|
|
defer c1.Shutdown()
|
|
|
|
// Wait for the leader
|
|
testrpc.WaitForLeader(t, s1.RPC, "dc1")
|
|
|
|
// Try to join.
|
|
joinLAN(t, c1, s1)
|
|
retry.Run(t, func(r *retry.R) {
|
|
if got, want := len(s1.LANMembers()), 2; got != want {
|
|
r.Fatalf("got %d server members want %d", got, want)
|
|
}
|
|
if got, want := len(c1.LANMembers()), 2; got != want {
|
|
r.Fatalf("got %d client members want %d", got, want)
|
|
}
|
|
|
|
// Wait until we've got a healthy server.
|
|
if got, want := c1.routers.NumServers(), 1; got != want {
|
|
r.Fatalf("got %d servers want %d", got, want)
|
|
}
|
|
})
|
|
|
|
// Take a snapshot.
|
|
var snap bytes.Buffer
|
|
args := structs.SnapshotRequest{
|
|
Datacenter: "dc1",
|
|
Op: structs.SnapshotSave,
|
|
}
|
|
if err := c1.SnapshotRPC(&args, bytes.NewReader([]byte("")), &snap, nil); err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
|
|
// Restore a snapshot.
|
|
args.Op = structs.SnapshotRestore
|
|
if err := c1.SnapshotRPC(&args, &snap, nil, nil); err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
}
|
|
|
|
func TestClientServer_UserEvent(t *testing.T) {
|
|
t.Parallel()
|
|
clientOut := make(chan serf.UserEvent, 2)
|
|
dir1, c1 := testClientWithConfig(t, func(conf *Config) {
|
|
conf.UserEventHandler = func(e serf.UserEvent) {
|
|
clientOut <- e
|
|
}
|
|
})
|
|
defer os.RemoveAll(dir1)
|
|
defer c1.Shutdown()
|
|
|
|
serverOut := make(chan serf.UserEvent, 2)
|
|
dir2, s1 := testServerWithConfig(t, func(conf *Config) {
|
|
conf.UserEventHandler = func(e serf.UserEvent) {
|
|
serverOut <- e
|
|
}
|
|
})
|
|
defer os.RemoveAll(dir2)
|
|
defer s1.Shutdown()
|
|
|
|
// Try to join
|
|
joinLAN(t, c1, s1)
|
|
|
|
// Wait for the leader
|
|
testrpc.WaitForLeader(t, s1.RPC, "dc1")
|
|
|
|
// Check the members
|
|
retry.Run(t, func(r *retry.R) {
|
|
if got, want := len(s1.LANMembers()), 2; got != want {
|
|
r.Fatalf("got %d server LAN members want %d", got, want)
|
|
}
|
|
if got, want := len(c1.LANMembers()), 2; got != want {
|
|
r.Fatalf("got %d client LAN members want %d", got, want)
|
|
}
|
|
})
|
|
|
|
// Fire the user event
|
|
codec := rpcClient(t, s1)
|
|
event := structs.EventFireRequest{
|
|
Name: "foo",
|
|
Datacenter: "dc1",
|
|
Payload: []byte("baz"),
|
|
}
|
|
if err := msgpackrpc.CallWithCodec(codec, "Internal.EventFire", &event, nil); err != nil {
|
|
t.Fatalf("err: %v", err)
|
|
}
|
|
|
|
// Wait for all the events
|
|
var clientReceived, serverReceived bool
|
|
for i := 0; i < 2; i++ {
|
|
select {
|
|
case e := <-clientOut:
|
|
switch e.Name {
|
|
case "foo":
|
|
clientReceived = true
|
|
default:
|
|
t.Fatalf("Bad: %#v", e)
|
|
}
|
|
|
|
case e := <-serverOut:
|
|
switch e.Name {
|
|
case "foo":
|
|
serverReceived = true
|
|
default:
|
|
t.Fatalf("Bad: %#v", e)
|
|
}
|
|
|
|
case <-time.After(10 * time.Second):
|
|
t.Fatalf("timeout")
|
|
}
|
|
}
|
|
|
|
if !serverReceived || !clientReceived {
|
|
t.Fatalf("missing events")
|
|
}
|
|
}
|
|
|
|
func TestClient_Encrypted(t *testing.T) {
|
|
t.Parallel()
|
|
dir1, c1 := testClient(t)
|
|
defer os.RemoveAll(dir1)
|
|
defer c1.Shutdown()
|
|
|
|
key := []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
|
|
dir2, c2 := testClientWithConfig(t, func(c *Config) {
|
|
c.SerfLANConfig.MemberlistConfig.SecretKey = key
|
|
})
|
|
defer os.RemoveAll(dir2)
|
|
defer c2.Shutdown()
|
|
|
|
if c1.Encrypted() {
|
|
t.Fatalf("should not be encrypted")
|
|
}
|
|
if !c2.Encrypted() {
|
|
t.Fatalf("should be encrypted")
|
|
}
|
|
}
|