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open-consul/consul/prepared_query_endpoint_test.go

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package consul
import (
"bytes"
"fmt"
"log"
"net/rpc"
"os"
"reflect"
"sort"
"strings"
"testing"
"time"
"github.com/hashicorp/consul/consul/structs"
"github.com/hashicorp/consul/testutil"
"github.com/hashicorp/net-rpc-msgpackrpc"
"github.com/hashicorp/serf/coordinate"
)
func TestPreparedQuery_Apply(t *testing.T) {
dir1, s1 := testServer(t)
defer os.RemoveAll(dir1)
defer s1.Shutdown()
codec := rpcClient(t, s1)
defer codec.Close()
testutil.WaitForLeader(t, s1.RPC, "dc1")
// Set up a node and service in the catalog.
{
req := structs.RegisterRequest{
Datacenter: "dc1",
Node: "foo",
Address: "127.0.0.1",
Service: &structs.NodeService{
Service: "redis",
Tags: []string{"master"},
Port: 8000,
},
}
var reply struct{}
err := msgpackrpc.CallWithCodec(codec, "Catalog.Register", &req, &reply)
if err != nil {
t.Fatalf("err: %v", err)
}
}
// Set up a bare bones query.
query := structs.PreparedQueryRequest{
Datacenter: "dc1",
Op: structs.PreparedQueryCreate,
Query: &structs.PreparedQuery{
Service: structs.ServiceQuery{
Service: "redis",
},
},
}
var reply string
// Set an ID which should fail the create.
query.Query.ID = "nope"
err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply)
if err == nil || !strings.Contains(err.Error(), "ID must be empty") {
t.Fatalf("bad: %v", err)
}
// Change it to a bogus modify which should also fail.
query.Op = structs.PreparedQueryUpdate
query.Query.ID = generateUUID()
err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply)
if err == nil || !strings.Contains(err.Error(), "Cannot modify non-existent prepared query") {
t.Fatalf("bad: %v", err)
}
// Fix up the ID but invalidate the query itself. This proves we call
// parseQuery for a create, but that function is checked in detail as
// part of another test.
query.Op = structs.PreparedQueryCreate
query.Query.ID = ""
query.Query.Service.Failover.NearestN = -1
err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply)
if err == nil || !strings.Contains(err.Error(), "Bad NearestN") {
t.Fatalf("bad: %v", err)
}
// Fix that and make sure it propagates an error from the Raft apply.
query.Query.Service.Failover.NearestN = 0
query.Query.Service.Service = "nope"
err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply)
if err == nil || !strings.Contains(err.Error(), "invalid service") {
t.Fatalf("bad: %v", err)
}
// Fix that and make sure the apply goes through.
query.Query.Service.Service = "redis"
if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil {
t.Fatalf("err: %v", err)
}
// Capture the ID and read the query back to verify.
query.Query.ID = reply
{
req := &structs.PreparedQuerySpecificRequest{
Datacenter: "dc1",
QueryID: query.Query.ID,
}
var resp structs.IndexedPreparedQueries
if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Get", req, &resp); err != nil {
t.Fatalf("err: %v", err)
}
if len(resp.Queries) != 1 {
t.Fatalf("bad: %v", resp)
}
actual := resp.Queries[0]
if resp.Index != actual.ModifyIndex {
t.Fatalf("bad index: %d", resp.Index)
}
actual.CreateIndex, actual.ModifyIndex = 0, 0
if !reflect.DeepEqual(actual, query.Query) {
t.Fatalf("bad: %v", actual)
}
}
// Make the op an update. This should go through now that we have an ID.
query.Op = structs.PreparedQueryUpdate
query.Query.Service.Failover.NearestN = 2
if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil {
t.Fatalf("err: %v", err)
}
// Read back again to verify the update worked.
{
req := &structs.PreparedQuerySpecificRequest{
Datacenter: "dc1",
QueryID: query.Query.ID,
}
var resp structs.IndexedPreparedQueries
if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Get", req, &resp); err != nil {
t.Fatalf("err: %v", err)
}
if len(resp.Queries) != 1 {
t.Fatalf("bad: %v", resp)
}
actual := resp.Queries[0]
if resp.Index != actual.ModifyIndex {
t.Fatalf("bad index: %d", resp.Index)
}
actual.CreateIndex, actual.ModifyIndex = 0, 0
if !reflect.DeepEqual(actual, query.Query) {
t.Fatalf("bad: %v", actual)
}
}
// Give a bogus op and make sure it fails.
query.Op = "nope"
err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply)
if err == nil || !strings.Contains(err.Error(), "Unknown prepared query operation:") {
t.Fatalf("bad: %v", err)
}
// Prove that an update also goes through the parseQuery validation.
query.Op = structs.PreparedQueryUpdate
query.Query.Service.Failover.NearestN = -1
err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply)
if err == nil || !strings.Contains(err.Error(), "Bad NearestN") {
t.Fatalf("bad: %v", err)
}
// Now change the op to delete; the bad query field should be ignored
// because all we care about for a delete op is the ID.
query.Op = structs.PreparedQueryDelete
if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil {
t.Fatalf("err: %v", err)
}
// Verify that this query is deleted.
{
req := &structs.PreparedQuerySpecificRequest{
Datacenter: "dc1",
QueryID: query.Query.ID,
}
var resp structs.IndexedPreparedQueries
if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Get", req, &resp); err != nil {
t.Fatalf("err: %v", err)
}
if len(resp.Queries) != 0 {
t.Fatalf("bad: %v", resp)
}
}
}
func TestPreparedQuery_Apply_ACLDeny(t *testing.T) {
dir1, s1 := testServerWithConfig(t, func(c *Config) {
c.ACLDatacenter = "dc1"
c.ACLMasterToken = "root"
c.ACLDefaultPolicy = "deny"
})
defer os.RemoveAll(dir1)
defer s1.Shutdown()
codec := rpcClient(t, s1)
defer codec.Close()
testutil.WaitForLeader(t, s1.RPC, "dc1")
// Create two ACLs with read permission to the service.
var token1, token2 string
{
var rules = `
service "redis" {
policy = "read"
}
`
req := structs.ACLRequest{
Datacenter: "dc1",
Op: structs.ACLSet,
ACL: structs.ACL{
Name: "User token",
Type: structs.ACLTypeClient,
Rules: rules,
},
WriteRequest: structs.WriteRequest{Token: "root"},
}
var reply string
if err := msgpackrpc.CallWithCodec(codec, "ACL.Apply", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
token1 = reply
if err := msgpackrpc.CallWithCodec(codec, "ACL.Apply", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
token2 = reply
}
// Set up a node and service in the catalog.
{
req := structs.RegisterRequest{
Datacenter: "dc1",
Node: "foo",
Address: "127.0.0.1",
Service: &structs.NodeService{
Service: "redis",
Tags: []string{"master"},
Port: 8000,
},
WriteRequest: structs.WriteRequest{Token: "root"},
}
var reply struct{}
err := msgpackrpc.CallWithCodec(codec, "Catalog.Register", &req, &reply)
if err != nil {
t.Fatalf("err: %v", err)
}
}
// Set up a bare bones query.
query := structs.PreparedQueryRequest{
Datacenter: "dc1",
Op: structs.PreparedQueryCreate,
Query: &structs.PreparedQuery{
Service: structs.ServiceQuery{
Service: "redis",
},
},
}
var reply string
// Creating without a token should fail since the default policy is to
// deny.
err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply)
if err == nil || !strings.Contains(err.Error(), permissionDenied) {
t.Fatalf("bad: %v", err)
}
// Now add the token and try again.
query.WriteRequest.Token = token1
if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil {
t.Fatalf("err: %v", err)
}
// Capture the ID and set the token, then read back the query to verify.
query.Query.ID = reply
query.Query.Token = token1
{
req := &structs.PreparedQuerySpecificRequest{
Datacenter: "dc1",
QueryID: query.Query.ID,
QueryOptions: structs.QueryOptions{Token: "root"},
}
var resp structs.IndexedPreparedQueries
if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Get", req, &resp); err != nil {
t.Fatalf("err: %v", err)
}
if len(resp.Queries) != 1 {
t.Fatalf("bad: %v", resp)
}
actual := resp.Queries[0]
if resp.Index != actual.ModifyIndex {
t.Fatalf("bad index: %d", resp.Index)
}
actual.CreateIndex, actual.ModifyIndex = 0, 0
if !reflect.DeepEqual(actual, query.Query) {
t.Fatalf("bad: %v", actual)
}
}
// Try to do an update with a different token that does have access to
// the service, but isn't the one that was used to create the query.
query.Op = structs.PreparedQueryUpdate
query.WriteRequest.Token = token2
err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply)
if err == nil || !strings.Contains(err.Error(), permissionDenied) {
t.Fatalf("bad: %v", err)
}
// Try again with no token.
query.WriteRequest.Token = ""
err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply)
if err == nil || !strings.Contains(err.Error(), permissionDenied) {
t.Fatalf("bad: %v", err)
}
// Try again with the original token. This should go through.
query.WriteRequest.Token = token1
if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil {
t.Fatalf("err: %v", err)
}
// Try to do a delete with a different token that does have access to
// the service, but isn't the one that was used to create the query.
query.Op = structs.PreparedQueryDelete
query.WriteRequest.Token = token2
err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply)
if err == nil || !strings.Contains(err.Error(), permissionDenied) {
t.Fatalf("bad: %v", err)
}
// Try again with no token.
query.WriteRequest.Token = ""
err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply)
if err == nil || !strings.Contains(err.Error(), permissionDenied) {
t.Fatalf("bad: %v", err)
}
// Try again with the original token. This should go through.
query.WriteRequest.Token = token1
if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil {
t.Fatalf("err: %v", err)
}
// Make sure the query got deleted.
{
req := &structs.PreparedQuerySpecificRequest{
Datacenter: "dc1",
QueryID: query.Query.ID,
QueryOptions: structs.QueryOptions{Token: "root"},
}
var resp structs.IndexedPreparedQueries
if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Get", req, &resp); err != nil {
t.Fatalf("err: %v", err)
}
if len(resp.Queries) != 0 {
t.Fatalf("bad: %v", resp)
}
}
// Make the query again.
query.Op = structs.PreparedQueryCreate
query.Query.ID = ""
query.Query.Token = ""
query.WriteRequest.Token = token1
if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil {
t.Fatalf("err: %v", err)
}
// Check that it's there.
query.Query.ID = reply
query.Query.Token = token1
{
req := &structs.PreparedQuerySpecificRequest{
Datacenter: "dc1",
QueryID: query.Query.ID,
QueryOptions: structs.QueryOptions{Token: "root"},
}
var resp structs.IndexedPreparedQueries
if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Get", req, &resp); err != nil {
t.Fatalf("err: %v", err)
}
if len(resp.Queries) != 1 {
t.Fatalf("bad: %v", resp)
}
actual := resp.Queries[0]
if resp.Index != actual.ModifyIndex {
t.Fatalf("bad index: %d", resp.Index)
}
actual.CreateIndex, actual.ModifyIndex = 0, 0
if !reflect.DeepEqual(actual, query.Query) {
t.Fatalf("bad: %v", actual)
}
}
// A management token should be able to update the query no matter what.
query.Op = structs.PreparedQueryUpdate
query.WriteRequest.Token = "root"
if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil {
t.Fatalf("err: %v", err)
}
// That last update should have changed the token to the management one.
query.Query.Token = "root"
{
req := &structs.PreparedQuerySpecificRequest{
Datacenter: "dc1",
QueryID: query.Query.ID,
QueryOptions: structs.QueryOptions{Token: "root"},
}
var resp structs.IndexedPreparedQueries
if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Get", req, &resp); err != nil {
t.Fatalf("err: %v", err)
}
if len(resp.Queries) != 1 {
t.Fatalf("bad: %v", resp)
}
actual := resp.Queries[0]
if resp.Index != actual.ModifyIndex {
t.Fatalf("bad index: %d", resp.Index)
}
actual.CreateIndex, actual.ModifyIndex = 0, 0
if !reflect.DeepEqual(actual, query.Query) {
t.Fatalf("bad: %v", actual)
}
}
// Make another query.
query.Op = structs.PreparedQueryCreate
query.Query.ID = ""
query.Query.Token = ""
query.WriteRequest.Token = token1
if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil {
t.Fatalf("err: %v", err)
}
// Check that it's there.
query.Query.ID = reply
query.Query.Token = token1
{
req := &structs.PreparedQuerySpecificRequest{
Datacenter: "dc1",
QueryID: query.Query.ID,
QueryOptions: structs.QueryOptions{Token: "root"},
}
var resp structs.IndexedPreparedQueries
if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Get", req, &resp); err != nil {
t.Fatalf("err: %v", err)
}
if len(resp.Queries) != 1 {
t.Fatalf("bad: %v", resp)
}
actual := resp.Queries[0]
if resp.Index != actual.ModifyIndex {
t.Fatalf("bad index: %d", resp.Index)
}
actual.CreateIndex, actual.ModifyIndex = 0, 0
if !reflect.DeepEqual(actual, query.Query) {
t.Fatalf("bad: %v", actual)
}
}
// A management token should be able to delete the query no matter what.
query.Op = structs.PreparedQueryDelete
query.WriteRequest.Token = "root"
if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil {
t.Fatalf("err: %v", err)
}
// Make sure the query got deleted.
{
req := &structs.PreparedQuerySpecificRequest{
Datacenter: "dc1",
QueryID: query.Query.ID,
QueryOptions: structs.QueryOptions{Token: "root"},
}
var resp structs.IndexedPreparedQueries
if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Get", req, &resp); err != nil {
t.Fatalf("err: %v", err)
}
if len(resp.Queries) != 0 {
t.Fatalf("bad: %v", resp)
}
}
}
func TestPreparedQuery_Apply_ForwardLeader(t *testing.T) {
dir1, s1 := testServer(t)
defer os.RemoveAll(dir1)
defer s1.Shutdown()
codec1 := rpcClient(t, s1)
defer codec1.Close()
dir2, s2 := testServer(t)
defer os.RemoveAll(dir2)
defer s2.Shutdown()
codec2 := rpcClient(t, s2)
defer codec2.Close()
// Try to join.
addr := fmt.Sprintf("127.0.0.1:%d",
s1.config.SerfLANConfig.MemberlistConfig.BindPort)
if _, err := s2.JoinLAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
testutil.WaitForLeader(t, s1.RPC, "dc1")
testutil.WaitForLeader(t, s2.RPC, "dc1")
// Use the follower as the client.
var codec rpc.ClientCodec
if !s1.IsLeader() {
codec = codec1
} else {
codec = codec2
}
// Set up a node and service in the catalog.
{
req := structs.RegisterRequest{
Datacenter: "dc1",
Node: "foo",
Address: "127.0.0.1",
Service: &structs.NodeService{
Service: "redis",
Tags: []string{"master"},
Port: 8000,
},
}
var reply struct{}
err := msgpackrpc.CallWithCodec(codec, "Catalog.Register", &req, &reply)
if err != nil {
t.Fatalf("err: %v", err)
}
}
// Set up a bare bones query.
query := structs.PreparedQueryRequest{
Datacenter: "dc1",
Op: structs.PreparedQueryCreate,
Query: &structs.PreparedQuery{
Service: structs.ServiceQuery{
Service: "redis",
},
},
}
// Make sure the apply works even when forwarded through the non-leader.
var reply string
if err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil {
t.Fatalf("err: %v", err)
}
}
func TestPreparedQuery_parseQuery(t *testing.T) {
query := &structs.PreparedQuery{}
err := parseQuery(query)
if err == nil || !strings.Contains(err.Error(), "Must provide a service") {
t.Fatalf("bad: %v", err)
}
query.Service.Service = "foo"
if err := parseQuery(query); err != nil {
t.Fatalf("err: %v", err)
}
query.Service.Failover.NearestN = -1
err = parseQuery(query)
if err == nil || !strings.Contains(err.Error(), "Bad NearestN") {
t.Fatalf("bad: %v", err)
}
query.Service.Failover.NearestN = 3
if err := parseQuery(query); err != nil {
t.Fatalf("err: %v", err)
}
query.DNS.TTL = "two fortnights"
err = parseQuery(query)
if err == nil || !strings.Contains(err.Error(), "Bad DNS TTL") {
t.Fatalf("bad: %v", err)
}
query.DNS.TTL = "-3s"
err = parseQuery(query)
if err == nil || !strings.Contains(err.Error(), "must be >=0") {
t.Fatalf("bad: %v", err)
}
query.DNS.TTL = "3s"
if err := parseQuery(query); err != nil {
t.Fatalf("err: %v", err)
}
}
func TestPreparedQuery_Get(t *testing.T) {
dir1, s1 := testServerWithConfig(t, func(c *Config) {
c.ACLDatacenter = "dc1"
c.ACLMasterToken = "root"
c.ACLDefaultPolicy = "deny"
})
defer os.RemoveAll(dir1)
defer s1.Shutdown()
codec := rpcClient(t, s1)
defer codec.Close()
testutil.WaitForLeader(t, s1.RPC, "dc1")
// Create two ACLs with read permission to the service.
var token1, token2 string
{
var rules = `
service "redis" {
policy = "read"
}
`
req := structs.ACLRequest{
Datacenter: "dc1",
Op: structs.ACLSet,
ACL: structs.ACL{
Name: "User token",
Type: structs.ACLTypeClient,
Rules: rules,
},
WriteRequest: structs.WriteRequest{Token: "root"},
}
var reply string
if err := msgpackrpc.CallWithCodec(codec, "ACL.Apply", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
token1 = reply
if err := msgpackrpc.CallWithCodec(codec, "ACL.Apply", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
token2 = reply
}
// Set up a node and service in the catalog.
{
req := structs.RegisterRequest{
Datacenter: "dc1",
Node: "foo",
Address: "127.0.0.1",
Service: &structs.NodeService{
Service: "redis",
Tags: []string{"master"},
Port: 8000,
},
WriteRequest: structs.WriteRequest{Token: "root"},
}
var reply struct{}
err := msgpackrpc.CallWithCodec(codec, "Catalog.Register", &req, &reply)
if err != nil {
t.Fatalf("err: %v", err)
}
}
// Set up a bare bones query.
query := structs.PreparedQueryRequest{
Datacenter: "dc1",
Op: structs.PreparedQueryCreate,
Query: &structs.PreparedQuery{
Name: "my-query",
Service: structs.ServiceQuery{
Service: "redis",
},
},
WriteRequest: structs.WriteRequest{Token: token1},
}
var reply string
if err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil {
t.Fatalf("err: %v", err)
}
// Capture the ID and set the token, then read back the query to verify.
query.Query.ID = reply
query.Query.Token = token1
{
req := &structs.PreparedQuerySpecificRequest{
Datacenter: "dc1",
QueryID: query.Query.ID,
QueryOptions: structs.QueryOptions{Token: token1},
}
var resp structs.IndexedPreparedQueries
if err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Get", req, &resp); err != nil {
t.Fatalf("err: %v", err)
}
if len(resp.Queries) != 1 {
t.Fatalf("bad: %v", resp)
}
actual := resp.Queries[0]
if resp.Index != actual.ModifyIndex {
t.Fatalf("bad index: %d", resp.Index)
}
actual.CreateIndex, actual.ModifyIndex = 0, 0
if !reflect.DeepEqual(actual, query.Query) {
t.Fatalf("bad: %v", actual)
}
}
// Now try to read it with a token that has read access to the
// service but isn't the token used to create the query. This should
// be denied.
{
req := &structs.PreparedQuerySpecificRequest{
Datacenter: "dc1",
QueryID: query.Query.ID,
QueryOptions: structs.QueryOptions{Token: token2},
}
var resp structs.IndexedPreparedQueries
err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Get", req, &resp)
if err == nil || !strings.Contains(err.Error(), permissionDenied) {
t.Fatalf("bad: %v", err)
}
if len(resp.Queries) != 0 {
t.Fatalf("bad: %v", resp)
}
}
// Try again with no token, which should also be denied.
{
req := &structs.PreparedQuerySpecificRequest{
Datacenter: "dc1",
QueryID: query.Query.ID,
QueryOptions: structs.QueryOptions{Token: ""},
}
var resp structs.IndexedPreparedQueries
err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Get", req, &resp)
if err == nil || !strings.Contains(err.Error(), permissionDenied) {
t.Fatalf("bad: %v", err)
}
if len(resp.Queries) != 0 {
t.Fatalf("bad: %v", resp)
}
}
// A management token should be able to read no matter what.
{
req := &structs.PreparedQuerySpecificRequest{
Datacenter: "dc1",
QueryID: query.Query.ID,
QueryOptions: structs.QueryOptions{Token: "root"},
}
var resp structs.IndexedPreparedQueries
if err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Get", req, &resp); err != nil {
t.Fatalf("err: %v", err)
}
if len(resp.Queries) != 1 {
t.Fatalf("bad: %v", resp)
}
actual := resp.Queries[0]
if resp.Index != actual.ModifyIndex {
t.Fatalf("bad index: %d", resp.Index)
}
actual.CreateIndex, actual.ModifyIndex = 0, 0
if !reflect.DeepEqual(actual, query.Query) {
t.Fatalf("bad: %v", actual)
}
}
// Try to get an unknown ID.
{
req := &structs.PreparedQuerySpecificRequest{
Datacenter: "dc1",
QueryID: generateUUID(),
QueryOptions: structs.QueryOptions{Token: token1},
}
var resp structs.IndexedPreparedQueries
if err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Get", req, &resp); err != nil {
t.Fatalf("err: %v", err)
}
if len(resp.Queries) != 0 {
t.Fatalf("bad: %v", resp)
}
}
}
func TestPreparedQuery_List(t *testing.T) {
dir1, s1 := testServerWithConfig(t, func(c *Config) {
c.ACLDatacenter = "dc1"
c.ACLMasterToken = "root"
c.ACLDefaultPolicy = "deny"
})
defer os.RemoveAll(dir1)
defer s1.Shutdown()
codec := rpcClient(t, s1)
defer codec.Close()
testutil.WaitForLeader(t, s1.RPC, "dc1")
// Create an ACL with read permission to the service.
var token string
{
var rules = `
service "redis" {
policy = "read"
}
`
req := structs.ACLRequest{
Datacenter: "dc1",
Op: structs.ACLSet,
ACL: structs.ACL{
Name: "User token",
Type: structs.ACLTypeClient,
Rules: rules,
},
WriteRequest: structs.WriteRequest{Token: "root"},
}
if err := msgpackrpc.CallWithCodec(codec, "ACL.Apply", &req, &token); err != nil {
t.Fatalf("err: %v", err)
}
}
// Set up a node and service in the catalog.
{
req := structs.RegisterRequest{
Datacenter: "dc1",
Node: "foo",
Address: "127.0.0.1",
Service: &structs.NodeService{
Service: "redis",
Tags: []string{"master"},
Port: 8000,
},
WriteRequest: structs.WriteRequest{Token: "root"},
}
var reply struct{}
err := msgpackrpc.CallWithCodec(codec, "Catalog.Register", &req, &reply)
if err != nil {
t.Fatalf("err: %v", err)
}
}
// Query with a legit management token but no queries.
{
req := &structs.DCSpecificRequest{
Datacenter: "dc1",
QueryOptions: structs.QueryOptions{Token: "root"},
}
var resp structs.IndexedPreparedQueries
if err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.List", req, &resp); err != nil {
t.Fatalf("err: %v", err)
}
if len(resp.Queries) != 0 {
t.Fatalf("bad: %v", resp)
}
}
// Set up a bare bones query.
query := structs.PreparedQueryRequest{
Datacenter: "dc1",
Op: structs.PreparedQueryCreate,
Query: &structs.PreparedQuery{
Name: "my-query",
Service: structs.ServiceQuery{
Service: "redis",
},
},
WriteRequest: structs.WriteRequest{Token: token},
}
var reply string
if err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil {
t.Fatalf("err: %v", err)
}
// Capture the ID and set the token, then try to list all the queries.
// A management token is required so this should be denied.
query.Query.ID = reply
query.Query.Token = token
{
req := &structs.DCSpecificRequest{
Datacenter: "dc1",
QueryOptions: structs.QueryOptions{Token: token},
}
var resp structs.IndexedPreparedQueries
err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.List", req, &resp)
if err == nil || !strings.Contains(err.Error(), permissionDenied) {
t.Fatalf("bad: %v", err)
}
if len(resp.Queries) != 0 {
t.Fatalf("bad: %v", resp)
}
}
// An empty token should fail in a similar way.
{
req := &structs.DCSpecificRequest{
Datacenter: "dc1",
QueryOptions: structs.QueryOptions{Token: ""},
}
var resp structs.IndexedPreparedQueries
err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.List", req, &resp)
if err == nil || !strings.Contains(err.Error(), permissionDenied) {
t.Fatalf("bad: %v", err)
}
if len(resp.Queries) != 0 {
t.Fatalf("bad: %v", resp)
}
}
// Now try a legit management token.
{
req := &structs.DCSpecificRequest{
Datacenter: "dc1",
QueryOptions: structs.QueryOptions{Token: "root"},
}
var resp structs.IndexedPreparedQueries
if err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.List", req, &resp); err != nil {
t.Fatalf("err: %v", err)
}
if len(resp.Queries) != 1 {
t.Fatalf("bad: %v", resp)
}
actual := resp.Queries[0]
if resp.Index != actual.ModifyIndex {
t.Fatalf("bad index: %d", resp.Index)
}
actual.CreateIndex, actual.ModifyIndex = 0, 0
if !reflect.DeepEqual(actual, query.Query) {
t.Fatalf("bad: %v", actual)
}
}
}
// This is a beast of a test, but the setup is so extensive it makes sense to
// walk through the different cases once we have it up. This is broken into
// sections so it's still pretty easy to read.
func TestPreparedQuery_Execute(t *testing.T) {
dir1, s1 := testServerWithConfig(t, func(c *Config) {
c.ACLDatacenter = "dc1"
c.ACLMasterToken = "root"
c.ACLDefaultPolicy = "deny"
})
defer os.RemoveAll(dir1)
defer s1.Shutdown()
codec1 := rpcClient(t, s1)
defer codec1.Close()
dir2, s2 := testServerWithConfig(t, func(c *Config) {
c.Datacenter = "dc2"
c.ACLDatacenter = "dc1"
c.ACLMasterToken = "root"
c.ACLDefaultPolicy = "deny"
})
defer os.RemoveAll(dir2)
defer s2.Shutdown()
codec2 := rpcClient(t, s2)
defer codec2.Close()
testutil.WaitForLeader(t, s1.RPC, "dc1")
testutil.WaitForLeader(t, s2.RPC, "dc2")
// Try to WAN join.
addr := fmt.Sprintf("127.0.0.1:%d",
s1.config.SerfWANConfig.MemberlistConfig.BindPort)
if _, err := s2.JoinWAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
testutil.WaitForResult(
func() (bool, error) {
return len(s1.WANMembers()) > 1, nil
},
func(err error) {
t.Fatalf("Failed waiting for WAN join: %v", err)
})
// Create an ACL with read permission to the service.
var token string
{
var rules = `
service "foo" {
policy = "read"
}
`
req := structs.ACLRequest{
Datacenter: "dc1",
Op: structs.ACLSet,
ACL: structs.ACL{
Name: "User token",
Type: structs.ACLTypeClient,
Rules: rules,
},
WriteRequest: structs.WriteRequest{Token: "root"},
}
if err := msgpackrpc.CallWithCodec(codec1, "ACL.Apply", &req, &token); err != nil {
t.Fatalf("err: %v", err)
}
}
// Set up some nodes in each DC that host the service.
{
for i := 0; i < 10; i++ {
for _, dc := range []string{"dc1", "dc2"} {
req := structs.RegisterRequest{
Datacenter: dc,
Node: fmt.Sprintf("node%d", i+1),
Address: fmt.Sprintf("127.0.0.%d", i+1),
Service: &structs.NodeService{
Service: "foo",
Port: 8000,
Tags: []string{dc, fmt.Sprintf("tag%d", i+1)},
},
WriteRequest: structs.WriteRequest{Token: "root"},
}
var codec rpc.ClientCodec
if dc == "dc1" {
codec = codec1
} else {
codec = codec2
}
var reply struct{}
if err := msgpackrpc.CallWithCodec(codec, "Catalog.Register", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
}
}
}
// Set up a service query.
query := structs.PreparedQueryRequest{
Datacenter: "dc1",
Op: structs.PreparedQueryCreate,
Query: &structs.PreparedQuery{
Service: structs.ServiceQuery{
Service: "foo",
},
DNS: structs.QueryDNSOptions{
TTL: "10s",
},
},
WriteRequest: structs.WriteRequest{Token: token},
}
if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Apply", &query, &query.Query.ID); err != nil {
t.Fatalf("err: %v", err)
}
// Run a query that doesn't exist.
{
req := structs.PreparedQueryExecuteRequest{
Datacenter: "dc1",
QueryIDOrName: "nope",
}
var reply structs.PreparedQueryExecuteResponse
err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Execute", &req, &reply)
if err == nil || !strings.Contains(err.Error(), ErrQueryNotFound.Error()) {
t.Fatalf("bad: %v", err)
}
if len(reply.Nodes) != 0 {
t.Fatalf("bad: %v", reply)
}
}
// Run the registered query.
{
req := structs.PreparedQueryExecuteRequest{
Datacenter: "dc1",
QueryIDOrName: query.Query.ID,
}
var reply structs.PreparedQueryExecuteResponse
if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Execute", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 10 ||
reply.Datacenter != "dc1" || reply.Failovers != 0 ||
!reflect.DeepEqual(reply.DNS, query.Query.DNS) {
t.Fatalf("bad: %v", reply)
}
}
// Try with a limit.
{
req := structs.PreparedQueryExecuteRequest{
Datacenter: "dc1",
QueryIDOrName: query.Query.ID,
Limit: 3,
}
var reply structs.PreparedQueryExecuteResponse
if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Execute", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 3 ||
reply.Datacenter != "dc1" || reply.Failovers != 0 ||
!reflect.DeepEqual(reply.DNS, query.Query.DNS) {
t.Fatalf("bad: %v", reply)
}
}
// Push a coordinate for one of the nodes so we can try an RTT sort. We
// have to sleep a little while for the coordinate batch to get flushed.
{
req := structs.CoordinateUpdateRequest{
Datacenter: "dc1",
Node: "node3",
Coord: coordinate.NewCoordinate(coordinate.DefaultConfig()),
}
var out struct{}
if err := msgpackrpc.CallWithCodec(codec1, "Coordinate.Update", &req, &out); err != nil {
t.Fatalf("err: %v", err)
}
time.Sleep(2 * s1.config.CoordinateUpdatePeriod)
}
// Try an RTT sort. We don't have any other coordinates in there but
// showing that the node with a coordinate is always first proves we
// call the RTT sorting function, which is tested elsewhere.
for i := 0; i < 100; i++ {
req := structs.PreparedQueryExecuteRequest{
Datacenter: "dc1",
QueryIDOrName: query.Query.ID,
Source: structs.QuerySource{
Datacenter: "dc1",
Node: "node3",
},
}
var reply structs.PreparedQueryExecuteResponse
if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Execute", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 10 ||
reply.Datacenter != "dc1" || reply.Failovers != 0 ||
!reflect.DeepEqual(reply.DNS, query.Query.DNS) {
t.Fatalf("bad: %v", reply)
}
if reply.Nodes[0].Node.Node != "node3" {
t.Fatalf("bad: %v", reply)
}
}
// Make sure the shuffle looks like it's working.
uniques := make(map[string]struct{})
for i := 0; i < 100; i++ {
req := structs.PreparedQueryExecuteRequest{
Datacenter: "dc1",
QueryIDOrName: query.Query.ID,
}
var reply structs.PreparedQueryExecuteResponse
if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Execute", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 10 ||
reply.Datacenter != "dc1" || reply.Failovers != 0 ||
!reflect.DeepEqual(reply.DNS, query.Query.DNS) {
t.Fatalf("bad: %v", reply)
}
var names []string
for _, node := range reply.Nodes {
names = append(names, node.Node.Node)
}
key := strings.Join(names, "|")
uniques[key] = struct{}{}
}
// We have to allow for the fact that there won't always be a unique
// shuffle each pass, so we just look for smell here without the test
// being flaky.
if len(uniques) < 50 {
t.Fatalf("unique shuffle ratio too low: %d/100", len(uniques))
}
// Update the health of a node to mark it critical.
setHealth := func(node string, health string) {
req := structs.RegisterRequest{
Datacenter: "dc1",
Node: node,
Address: "127.0.0.1",
Service: &structs.NodeService{
Service: "foo",
Port: 8000,
Tags: []string{"dc1", "tag1"},
},
Check: &structs.HealthCheck{
Name: "failing",
Status: health,
ServiceID: "foo",
},
WriteRequest: structs.WriteRequest{Token: "root"},
}
var reply struct{}
if err := msgpackrpc.CallWithCodec(codec1, "Catalog.Register", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
}
setHealth("node1", structs.HealthCritical)
// The failing node should be filtered.
{
req := structs.PreparedQueryExecuteRequest{
Datacenter: "dc1",
QueryIDOrName: query.Query.ID,
}
var reply structs.PreparedQueryExecuteResponse
if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Execute", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 9 ||
reply.Datacenter != "dc1" || reply.Failovers != 0 ||
!reflect.DeepEqual(reply.DNS, query.Query.DNS) {
t.Fatalf("bad: %v", reply)
}
for _, node := range reply.Nodes {
if node.Node.Node == "node1" {
t.Fatalf("bad: %v", node)
}
}
}
// Upgrade it to a warning and re-query, should be 10 nodes again.
setHealth("node1", structs.HealthWarning)
{
req := structs.PreparedQueryExecuteRequest{
Datacenter: "dc1",
QueryIDOrName: query.Query.ID,
}
var reply structs.PreparedQueryExecuteResponse
if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Execute", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 10 ||
reply.Datacenter != "dc1" || reply.Failovers != 0 ||
!reflect.DeepEqual(reply.DNS, query.Query.DNS) {
t.Fatalf("bad: %v", reply)
}
}
// Make the query more picky so it excludes warning nodes.
query.Op = structs.PreparedQueryUpdate
query.Query.Service.OnlyPassing = true
if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Apply", &query, &query.Query.ID); err != nil {
t.Fatalf("err: %v", err)
}
// The node in the warning state should be filtered.
{
req := structs.PreparedQueryExecuteRequest{
Datacenter: "dc1",
QueryIDOrName: query.Query.ID,
}
var reply structs.PreparedQueryExecuteResponse
if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Execute", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 9 ||
reply.Datacenter != "dc1" || reply.Failovers != 0 ||
!reflect.DeepEqual(reply.DNS, query.Query.DNS) {
t.Fatalf("bad: %v", reply)
}
for _, node := range reply.Nodes {
if node.Node.Node == "node1" {
t.Fatalf("bad: %v", node)
}
}
}
// Make the query more picky by adding a tag filter. This just proves we
// call into the tag filter, it is tested more thoroughly in a separate
// test.
query.Query.Service.Tags = []string{"!tag3"}
if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Apply", &query, &query.Query.ID); err != nil {
t.Fatalf("err: %v", err)
}
// The node in the warning state should be filtered as well as the node
// with the filtered tag.
{
req := structs.PreparedQueryExecuteRequest{
Datacenter: "dc1",
QueryIDOrName: query.Query.ID,
}
var reply structs.PreparedQueryExecuteResponse
if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Execute", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 8 ||
reply.Datacenter != "dc1" || reply.Failovers != 0 ||
!reflect.DeepEqual(reply.DNS, query.Query.DNS) {
t.Fatalf("bad: %v", reply)
}
for _, node := range reply.Nodes {
if node.Node.Node == "node1" || node.Node.Node == "node3" {
t.Fatalf("bad: %v", node)
}
}
}
// Now fail everything in dc1 and we should get an empty list back.
for i := 0; i < 10; i++ {
setHealth(fmt.Sprintf("node%d", i+1), structs.HealthCritical)
}
{
req := structs.PreparedQueryExecuteRequest{
Datacenter: "dc1",
QueryIDOrName: query.Query.ID,
}
var reply structs.PreparedQueryExecuteResponse
if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Execute", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 0 ||
reply.Datacenter != "dc1" || reply.Failovers != 0 ||
!reflect.DeepEqual(reply.DNS, query.Query.DNS) {
t.Fatalf("bad: %v", reply)
}
}
// Modify the query to have it fail over to a bogus DC and then dc2.
query.Query.Service.Failover.Datacenters = []string{"bogus", "dc2"}
if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Apply", &query, &query.Query.ID); err != nil {
t.Fatalf("err: %v", err)
}
// Now we should see 9 nodes from dc2 (we have the tag filter still).
{
req := structs.PreparedQueryExecuteRequest{
Datacenter: "dc1",
QueryIDOrName: query.Query.ID,
}
var reply structs.PreparedQueryExecuteResponse
if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Execute", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 9 ||
reply.Datacenter != "dc2" || reply.Failovers != 1 ||
!reflect.DeepEqual(reply.DNS, query.Query.DNS) {
t.Fatalf("bad: %v", reply)
}
for _, node := range reply.Nodes {
if node.Node.Node == "node3" {
t.Fatalf("bad: %v", node)
}
}
}
// Make sure the limit and query options are forwarded.
{
req := structs.PreparedQueryExecuteRequest{
Datacenter: "dc1",
QueryIDOrName: query.Query.ID,
Limit: 3,
QueryOptions: structs.QueryOptions{RequireConsistent: true},
}
var reply structs.PreparedQueryExecuteResponse
if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Execute", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 3 ||
reply.Datacenter != "dc2" || reply.Failovers != 1 ||
!reflect.DeepEqual(reply.DNS, query.Query.DNS) {
t.Fatalf("bad: %v", reply)
}
for _, node := range reply.Nodes {
if node.Node.Node == "node3" {
t.Fatalf("bad: %v", node)
}
}
}
// Make sure the remote shuffle looks like it's working.
uniques = make(map[string]struct{})
for i := 0; i < 100; i++ {
req := structs.PreparedQueryExecuteRequest{
Datacenter: "dc1",
QueryIDOrName: query.Query.ID,
}
var reply structs.PreparedQueryExecuteResponse
if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Execute", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 9 ||
reply.Datacenter != "dc2" || reply.Failovers != 1 ||
!reflect.DeepEqual(reply.DNS, query.Query.DNS) {
t.Fatalf("bad: %v", reply)
}
var names []string
for _, node := range reply.Nodes {
names = append(names, node.Node.Node)
}
key := strings.Join(names, "|")
uniques[key] = struct{}{}
}
// We have to allow for the fact that there won't always be a unique
// shuffle each pass, so we just look for smell here without the test
// being flaky.
if len(uniques) < 50 {
t.Fatalf("unique shuffle ratio too low: %d/100", len(uniques))
}
// Finally, take away the token's ability to read the service.
{
var rules = `
service "foo" {
policy = "deny"
}
`
req := structs.ACLRequest{
Datacenter: "dc1",
Op: structs.ACLSet,
ACL: structs.ACL{
ID: token,
Name: "User token",
Type: structs.ACLTypeClient,
Rules: rules,
},
WriteRequest: structs.WriteRequest{Token: "root"},
}
if err := msgpackrpc.CallWithCodec(codec1, "ACL.Apply", &req, &token); err != nil {
t.Fatalf("err: %v", err)
}
}
// Now the query should be denied.
{
req := structs.PreparedQueryExecuteRequest{
Datacenter: "dc1",
QueryIDOrName: query.Query.ID,
}
var reply structs.PreparedQueryExecuteResponse
err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Execute", &req, &reply)
if err == nil || !strings.Contains(err.Error(), permissionDenied) {
t.Fatalf("bad: %v", err)
}
if len(reply.Nodes) != 0 {
t.Fatalf("bad: %v", reply)
}
}
}
func TestPreparedQuery_Execute_ForwardLeader(t *testing.T) {
dir1, s1 := testServer(t)
defer os.RemoveAll(dir1)
defer s1.Shutdown()
codec1 := rpcClient(t, s1)
defer codec1.Close()
dir2, s2 := testServer(t)
defer os.RemoveAll(dir2)
defer s2.Shutdown()
codec2 := rpcClient(t, s2)
defer codec2.Close()
// Try to join.
addr := fmt.Sprintf("127.0.0.1:%d",
s1.config.SerfLANConfig.MemberlistConfig.BindPort)
if _, err := s2.JoinLAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
testutil.WaitForLeader(t, s1.RPC, "dc1")
testutil.WaitForLeader(t, s2.RPC, "dc1")
// Use the follower as the client.
var codec rpc.ClientCodec
if !s1.IsLeader() {
codec = codec1
} else {
codec = codec2
}
// Set up a node and service in the catalog.
{
req := structs.RegisterRequest{
Datacenter: "dc1",
Node: "foo",
Address: "127.0.0.1",
Service: &structs.NodeService{
Service: "redis",
Tags: []string{"master"},
Port: 8000,
},
}
var reply struct{}
if err := msgpackrpc.CallWithCodec(codec, "Catalog.Register", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
}
// Set up a bare bones query.
query := structs.PreparedQueryRequest{
Datacenter: "dc1",
Op: structs.PreparedQueryCreate,
Query: &structs.PreparedQuery{
Service: structs.ServiceQuery{
Service: "redis",
},
},
}
var reply string
if err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil {
t.Fatalf("err: %v", err)
}
// Execute it through the follower.
{
req := structs.PreparedQueryExecuteRequest{
Datacenter: "dc1",
QueryIDOrName: reply,
}
var reply structs.PreparedQueryExecuteResponse
if err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Execute", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 1 {
t.Fatalf("bad: %v", reply)
}
}
// Execute it through the follower with consistency turned on.
{
req := structs.PreparedQueryExecuteRequest{
Datacenter: "dc1",
QueryIDOrName: reply,
QueryOptions: structs.QueryOptions{RequireConsistent: true},
}
var reply structs.PreparedQueryExecuteResponse
if err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Execute", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 1 {
t.Fatalf("bad: %v", reply)
}
}
// Remote execute it through the follower.
{
req := structs.PreparedQueryExecuteRemoteRequest{
Datacenter: "dc1",
Query: *query.Query,
}
var reply structs.PreparedQueryExecuteResponse
if err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.ExecuteRemote", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 1 {
t.Fatalf("bad: %v", reply)
}
}
// Remote execute it through the follower with consistency turned on.
{
req := structs.PreparedQueryExecuteRemoteRequest{
Datacenter: "dc1",
Query: *query.Query,
QueryOptions: structs.QueryOptions{RequireConsistent: true},
}
var reply structs.PreparedQueryExecuteResponse
if err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.ExecuteRemote", &req, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 1 {
t.Fatalf("bad: %v", reply)
}
}
}
func TestPreparedQuery_tagFilter(t *testing.T) {
testNodes := func() structs.CheckServiceNodes {
return structs.CheckServiceNodes{
structs.CheckServiceNode{
Node: &structs.Node{Node: "node1"},
Service: &structs.NodeService{Tags: []string{"foo"}},
},
structs.CheckServiceNode{
Node: &structs.Node{Node: "node2"},
Service: &structs.NodeService{Tags: []string{"foo", "BAR"}},
},
structs.CheckServiceNode{
Node: &structs.Node{Node: "node3"},
},
structs.CheckServiceNode{
Node: &structs.Node{Node: "node4"},
Service: &structs.NodeService{Tags: []string{"foo", "baz"}},
},
structs.CheckServiceNode{
Node: &structs.Node{Node: "node5"},
Service: &structs.NodeService{Tags: []string{"foo", "zoo"}},
},
structs.CheckServiceNode{
Node: &structs.Node{Node: "node6"},
Service: &structs.NodeService{Tags: []string{"bar"}},
},
}
}
// This always sorts so that it's not annoying to compare after the swap
// operations that the algorithm performs.
stringify := func(nodes structs.CheckServiceNodes) string {
var names []string
for _, node := range nodes {
names = append(names, node.Node.Node)
}
sort.Strings(names)
return strings.Join(names, "|")
}
ret := stringify(tagFilter([]string{}, testNodes()))
if ret != "node1|node2|node3|node4|node5|node6" {
t.Fatalf("bad: %s", ret)
}
ret = stringify(tagFilter([]string{"foo"}, testNodes()))
if ret != "node1|node2|node4|node5" {
t.Fatalf("bad: %s", ret)
}
ret = stringify(tagFilter([]string{"!foo"}, testNodes()))
if ret != "node3|node6" {
t.Fatalf("bad: %s", ret)
}
ret = stringify(tagFilter([]string{"!foo", "bar"}, testNodes()))
if ret != "node6" {
t.Fatalf("bad: %s", ret)
}
ret = stringify(tagFilter([]string{"!foo", "!bar"}, testNodes()))
if ret != "node3" {
t.Fatalf("bad: %s", ret)
}
ret = stringify(tagFilter([]string{"nope"}, testNodes()))
if ret != "" {
t.Fatalf("bad: %s", ret)
}
ret = stringify(tagFilter([]string{"bar"}, testNodes()))
if ret != "node2|node6" {
t.Fatalf("bad: %s", ret)
}
ret = stringify(tagFilter([]string{"BAR"}, testNodes()))
if ret != "node2|node6" {
t.Fatalf("bad: %s", ret)
}
ret = stringify(tagFilter([]string{"bAr"}, testNodes()))
if ret != "node2|node6" {
t.Fatalf("bad: %s", ret)
}
}
func TestPreparedQuery_Wrapper(t *testing.T) {
dir1, s1 := testServerWithConfig(t, func(c *Config) {
c.ACLDatacenter = "dc1"
c.ACLMasterToken = "root"
c.ACLDefaultPolicy = "deny"
})
defer os.RemoveAll(dir1)
defer s1.Shutdown()
codec1 := rpcClient(t, s1)
defer codec1.Close()
dir2, s2 := testServerWithConfig(t, func(c *Config) {
c.Datacenter = "dc2"
c.ACLDatacenter = "dc1"
c.ACLMasterToken = "root"
c.ACLDefaultPolicy = "deny"
})
defer os.RemoveAll(dir2)
defer s2.Shutdown()
codec2 := rpcClient(t, s2)
defer codec2.Close()
testutil.WaitForLeader(t, s1.RPC, "dc1")
testutil.WaitForLeader(t, s2.RPC, "dc2")
// Try to WAN join.
addr := fmt.Sprintf("127.0.0.1:%d",
s1.config.SerfWANConfig.MemberlistConfig.BindPort)
if _, err := s2.JoinWAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
testutil.WaitForResult(
func() (bool, error) {
return len(s1.WANMembers()) > 1, nil
},
func(err error) {
t.Fatalf("Failed waiting for WAN join: %v", err)
})
// Try all the operations on a real server via the wrapper.
wrapper := &queryServerWrapper{s1}
wrapper.GetLogger().Printf("[DEBUG] Test")
ret, err := wrapper.GetOtherDatacentersByDistance()
if err != nil {
t.Fatalf("err: %v", err)
}
if len(ret) != 1 || ret[0] != "dc2" {
t.Fatalf("bad: %v", ret)
}
if err := wrapper.ForwardDC("Status.Ping", "dc2", &struct{}{}, &struct{}{}); err != nil {
t.Fatalf("err: %v", err)
}
}
type mockQueryServer struct {
Datacenters []string
DatacentersError error
QueryLog []string
QueryFn func(dc string, args interface{}, reply interface{}) error
Logger *log.Logger
LogBuffer *bytes.Buffer
}
func (m *mockQueryServer) JoinQueryLog() string {
return strings.Join(m.QueryLog, "|")
}
func (m *mockQueryServer) GetLogger() *log.Logger {
if m.Logger == nil {
m.LogBuffer = new(bytes.Buffer)
m.Logger = log.New(m.LogBuffer, "", 0)
}
return m.Logger
}
func (m *mockQueryServer) GetOtherDatacentersByDistance() ([]string, error) {
return m.Datacenters, m.DatacentersError
}
func (m *mockQueryServer) ForwardDC(method, dc string, args interface{}, reply interface{}) error {
m.QueryLog = append(m.QueryLog, fmt.Sprintf("%s:%s", dc, method))
if ret, ok := reply.(*structs.PreparedQueryExecuteResponse); ok {
ret.Datacenter = dc
}
if m.QueryFn != nil {
return m.QueryFn(dc, args, reply)
} else {
return nil
}
}
func TestPreparedQuery_queryFailover(t *testing.T) {
query := &structs.PreparedQuery{
Service: structs.ServiceQuery{
Failover: structs.QueryDatacenterOptions{
NearestN: 0,
Datacenters: []string{""},
},
},
}
nodes := func() structs.CheckServiceNodes {
return structs.CheckServiceNodes{
structs.CheckServiceNode{
Node: &structs.Node{Node: "node1"},
},
structs.CheckServiceNode{
Node: &structs.Node{Node: "node2"},
},
structs.CheckServiceNode{
Node: &structs.Node{Node: "node3"},
},
}
}
// Datacenters are available but the query doesn't use them.
{
mock := &mockQueryServer{
Datacenters: []string{"dc1", "dc2", "dc3", "xxx", "dc4"},
}
var reply structs.PreparedQueryExecuteResponse
if err := queryFailover(mock, query, 0, structs.QueryOptions{}, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 0 || reply.Datacenter != "" || reply.Failovers != 0 {
t.Fatalf("bad: %v", reply)
}
}
// Make it fail to get datacenters.
{
mock := &mockQueryServer{
Datacenters: []string{"dc1", "dc2", "dc3", "xxx", "dc4"},
DatacentersError: fmt.Errorf("XXX"),
}
var reply structs.PreparedQueryExecuteResponse
err := queryFailover(mock, query, 0, structs.QueryOptions{}, &reply)
if err == nil || !strings.Contains(err.Error(), "XXX") {
t.Fatalf("bad: %v", err)
}
if len(reply.Nodes) != 0 || reply.Datacenter != "" || reply.Failovers != 0 {
t.Fatalf("bad: %v", reply)
}
}
// The query wants to use other datacenters but none are available.
query.Service.Failover.NearestN = 3
{
mock := &mockQueryServer{
Datacenters: []string{},
}
var reply structs.PreparedQueryExecuteResponse
if err := queryFailover(mock, query, 0, structs.QueryOptions{}, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 0 || reply.Datacenter != "" || reply.Failovers != 0 {
t.Fatalf("bad: %v", reply)
}
}
// Try the first three nearest datacenters, first one has the data.
query.Service.Failover.NearestN = 3
{
mock := &mockQueryServer{
Datacenters: []string{"dc1", "dc2", "dc3", "xxx", "dc4"},
QueryFn: func(dc string, args interface{}, reply interface{}) error {
ret := reply.(*structs.PreparedQueryExecuteResponse)
if dc == "dc1" {
ret.Nodes = nodes()
}
return nil
},
}
var reply structs.PreparedQueryExecuteResponse
if err := queryFailover(mock, query, 0, structs.QueryOptions{}, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 3 ||
reply.Datacenter != "dc1" || reply.Failovers != 1 ||
!reflect.DeepEqual(reply.Nodes, nodes()) {
t.Fatalf("bad: %v", reply)
}
if queries := mock.JoinQueryLog(); queries != "dc1:PreparedQuery.ExecuteRemote" {
t.Fatalf("bad: %s", queries)
}
}
// Try the first three nearest datacenters, last one has the data.
query.Service.Failover.NearestN = 3
{
mock := &mockQueryServer{
Datacenters: []string{"dc1", "dc2", "dc3", "xxx", "dc4"},
QueryFn: func(dc string, args interface{}, reply interface{}) error {
ret := reply.(*structs.PreparedQueryExecuteResponse)
if dc == "dc3" {
ret.Nodes = nodes()
}
return nil
},
}
var reply structs.PreparedQueryExecuteResponse
if err := queryFailover(mock, query, 0, structs.QueryOptions{}, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 3 ||
reply.Datacenter != "dc3" || reply.Failovers != 3 ||
!reflect.DeepEqual(reply.Nodes, nodes()) {
t.Fatalf("bad: %v", reply)
}
if queries := mock.JoinQueryLog(); queries != "dc1:PreparedQuery.ExecuteRemote|dc2:PreparedQuery.ExecuteRemote|dc3:PreparedQuery.ExecuteRemote" {
t.Fatalf("bad: %s", queries)
}
}
// Try the first four nearest datacenters, nobody has the data.
query.Service.Failover.NearestN = 4
{
mock := &mockQueryServer{
Datacenters: []string{"dc1", "dc2", "dc3", "xxx", "dc4"},
}
var reply structs.PreparedQueryExecuteResponse
if err := queryFailover(mock, query, 0, structs.QueryOptions{}, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 0 ||
reply.Datacenter != "xxx" || reply.Failovers != 4 {
t.Fatalf("bad: %v", reply)
}
if queries := mock.JoinQueryLog(); queries != "dc1:PreparedQuery.ExecuteRemote|dc2:PreparedQuery.ExecuteRemote|dc3:PreparedQuery.ExecuteRemote|xxx:PreparedQuery.ExecuteRemote" {
t.Fatalf("bad: %s", queries)
}
}
// Try the first two nearest datacenters, plus a user-specified one that
// has the data.
query.Service.Failover.NearestN = 2
query.Service.Failover.Datacenters = []string{"dc4"}
{
mock := &mockQueryServer{
Datacenters: []string{"dc1", "dc2", "dc3", "xxx", "dc4"},
QueryFn: func(dc string, args interface{}, reply interface{}) error {
ret := reply.(*structs.PreparedQueryExecuteResponse)
if dc == "dc4" {
ret.Nodes = nodes()
}
return nil
},
}
var reply structs.PreparedQueryExecuteResponse
if err := queryFailover(mock, query, 0, structs.QueryOptions{}, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 3 ||
reply.Datacenter != "dc4" || reply.Failovers != 3 ||
!reflect.DeepEqual(reply.Nodes, nodes()) {
t.Fatalf("bad: %v", reply)
}
if queries := mock.JoinQueryLog(); queries != "dc1:PreparedQuery.ExecuteRemote|dc2:PreparedQuery.ExecuteRemote|dc4:PreparedQuery.ExecuteRemote" {
t.Fatalf("bad: %s", queries)
}
}
// Add in a hard-coded value that overlaps with the nearest list.
query.Service.Failover.NearestN = 2
query.Service.Failover.Datacenters = []string{"dc4", "dc1"}
{
mock := &mockQueryServer{
Datacenters: []string{"dc1", "dc2", "dc3", "xxx", "dc4"},
QueryFn: func(dc string, args interface{}, reply interface{}) error {
ret := reply.(*structs.PreparedQueryExecuteResponse)
if dc == "dc4" {
ret.Nodes = nodes()
}
return nil
},
}
var reply structs.PreparedQueryExecuteResponse
if err := queryFailover(mock, query, 0, structs.QueryOptions{}, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 3 ||
reply.Datacenter != "dc4" || reply.Failovers != 3 ||
!reflect.DeepEqual(reply.Nodes, nodes()) {
t.Fatalf("bad: %v", reply)
}
if queries := mock.JoinQueryLog(); queries != "dc1:PreparedQuery.ExecuteRemote|dc2:PreparedQuery.ExecuteRemote|dc4:PreparedQuery.ExecuteRemote" {
t.Fatalf("bad: %s", queries)
}
}
// Now add a bogus user-defined one to the mix.
query.Service.Failover.NearestN = 2
query.Service.Failover.Datacenters = []string{"nope", "dc4", "dc1"}
{
mock := &mockQueryServer{
Datacenters: []string{"dc1", "dc2", "dc3", "xxx", "dc4"},
QueryFn: func(dc string, args interface{}, reply interface{}) error {
ret := reply.(*structs.PreparedQueryExecuteResponse)
if dc == "dc4" {
ret.Nodes = nodes()
}
return nil
},
}
var reply structs.PreparedQueryExecuteResponse
if err := queryFailover(mock, query, 0, structs.QueryOptions{}, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 3 ||
reply.Datacenter != "dc4" || reply.Failovers != 3 ||
!reflect.DeepEqual(reply.Nodes, nodes()) {
t.Fatalf("bad: %v", reply)
}
if queries := mock.JoinQueryLog(); queries != "dc1:PreparedQuery.ExecuteRemote|dc2:PreparedQuery.ExecuteRemote|dc4:PreparedQuery.ExecuteRemote" {
t.Fatalf("bad: %s", queries)
}
if !strings.Contains(mock.LogBuffer.String(), "Skipping unknown datacenter") {
t.Fatalf("bad: %s", mock.LogBuffer.String())
}
}
// Same setup as before but dc1 is going to return an error and should
// get skipped over, still yielding data from dc4 which comes later.
query.Service.Failover.NearestN = 2
query.Service.Failover.Datacenters = []string{"dc4", "dc1"}
{
mock := &mockQueryServer{
Datacenters: []string{"dc1", "dc2", "dc3", "xxx", "dc4"},
QueryFn: func(dc string, args interface{}, reply interface{}) error {
ret := reply.(*structs.PreparedQueryExecuteResponse)
if dc == "dc1" {
return fmt.Errorf("XXX")
} else if dc == "dc4" {
ret.Nodes = nodes()
}
return nil
},
}
var reply structs.PreparedQueryExecuteResponse
if err := queryFailover(mock, query, 0, structs.QueryOptions{}, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 3 ||
reply.Datacenter != "dc4" || reply.Failovers != 3 ||
!reflect.DeepEqual(reply.Nodes, nodes()) {
t.Fatalf("bad: %v", reply)
}
if queries := mock.JoinQueryLog(); queries != "dc1:PreparedQuery.ExecuteRemote|dc2:PreparedQuery.ExecuteRemote|dc4:PreparedQuery.ExecuteRemote" {
t.Fatalf("bad: %s", queries)
}
if !strings.Contains(mock.LogBuffer.String(), "Failed querying") {
t.Fatalf("bad: %s", mock.LogBuffer.String())
}
}
// Just use a hard-coded list and now xxx has the data.
query.Service.Failover.NearestN = 0
query.Service.Failover.Datacenters = []string{"dc3", "xxx"}
{
mock := &mockQueryServer{
Datacenters: []string{"dc1", "dc2", "dc3", "xxx", "dc4"},
QueryFn: func(dc string, args interface{}, reply interface{}) error {
ret := reply.(*structs.PreparedQueryExecuteResponse)
if dc == "xxx" {
ret.Nodes = nodes()
}
return nil
},
}
var reply structs.PreparedQueryExecuteResponse
if err := queryFailover(mock, query, 0, structs.QueryOptions{}, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 3 ||
reply.Datacenter != "xxx" || reply.Failovers != 2 ||
!reflect.DeepEqual(reply.Nodes, nodes()) {
t.Fatalf("bad: %v", reply)
}
if queries := mock.JoinQueryLog(); queries != "dc3:PreparedQuery.ExecuteRemote|xxx:PreparedQuery.ExecuteRemote" {
t.Fatalf("bad: %s", queries)
}
}
// Make sure the limit and query options are plumbed through.
query.Service.Failover.NearestN = 0
query.Service.Failover.Datacenters = []string{"xxx"}
{
mock := &mockQueryServer{
Datacenters: []string{"dc1", "dc2", "dc3", "xxx", "dc4"},
QueryFn: func(dc string, args interface{}, reply interface{}) error {
inp := args.(*structs.PreparedQueryExecuteRemoteRequest)
ret := reply.(*structs.PreparedQueryExecuteResponse)
if dc == "xxx" {
if inp.Limit != 5 {
t.Fatalf("bad: %d", inp.Limit)
}
if inp.RequireConsistent != true {
t.Fatalf("bad: %v", inp.RequireConsistent)
}
ret.Nodes = nodes()
}
return nil
},
}
var reply structs.PreparedQueryExecuteResponse
if err := queryFailover(mock, query, 5, structs.QueryOptions{RequireConsistent: true}, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if len(reply.Nodes) != 3 ||
reply.Datacenter != "xxx" || reply.Failovers != 1 ||
!reflect.DeepEqual(reply.Nodes, nodes()) {
t.Fatalf("bad: %v", reply)
}
if queries := mock.JoinQueryLog(); queries != "xxx:PreparedQuery.ExecuteRemote" {
t.Fatalf("bad: %s", queries)
}
}
}
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