package consul import ( "bytes" "fmt" "log" "net/rpc" "os" "reflect" "sort" "strings" "testing" "time" "github.com/hashicorp/consul/acl" "github.com/hashicorp/consul/agent/structs" "github.com/hashicorp/consul/api" "github.com/hashicorp/consul/testrpc" "github.com/hashicorp/consul/testutil/retry" "github.com/hashicorp/consul/types" "github.com/hashicorp/net-rpc-msgpackrpc" "github.com/hashicorp/serf/coordinate" "github.com/stretchr/testify/require" ) func TestPreparedQuery_Apply(t *testing.T) { t.Parallel() dir1, s1 := testServer(t) defer os.RemoveAll(dir1) defer s1.Shutdown() codec := rpcClient(t, s1) defer codec.Close() testrpc.WaitForLeader(t, s1.RPC, "dc1") // Set up a bare bones query. query := structs.PreparedQueryRequest{ Datacenter: "dc1", Op: structs.PreparedQueryCreate, Query: &structs.PreparedQuery{ Name: "test", 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 so we don't have to exercise all the checks // here. 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.Session = "nope" err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply) if err == nil || !strings.Contains(err.Error(), "failed session lookup") { t.Fatalf("bad: %v", err) } // Fix that and make sure the apply goes through. query.Query.Session = "" 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 { if err.Error() != ErrQueryNotFound.Error() { t.Fatalf("err: %v", err) } } if len(resp.Queries) != 0 { t.Fatalf("bad: %v", resp) } } } func TestPreparedQuery_Apply_ACLDeny(t *testing.T) { t.Parallel() 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() testrpc.WaitForLeader(t, s1.RPC, "dc1") // Create an ACL with write permissions for redis queries. var token string { var rules = ` query "redis" { policy = "write" } ` 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 bare bones query. query := structs.PreparedQueryRequest{ Datacenter: "dc1", Op: structs.PreparedQueryCreate, Query: &structs.PreparedQuery{ Name: "redis-master", Service: structs.ServiceQuery{ Service: "the-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 !acl.IsErrPermissionDenied(err) { t.Fatalf("bad: %v", err) } // Now add the token and try again. query.WriteRequest.Token = token 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. // Note that unlike previous versions of Consul, we DO NOT capture the // token. We will set that here just to be explicit about it. query.Query.ID = reply query.Query.Token = "" { 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 without a token; this should get rejected. query.Op = structs.PreparedQueryUpdate query.WriteRequest.Token = "" err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply) if !acl.IsErrPermissionDenied(err) { t.Fatalf("bad: %v", err) } // Try again with the original token; this should go through. query.WriteRequest.Token = token if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil { t.Fatalf("err: %v", err) } // Try to do a delete with no token; this should get rejected. query.Op = structs.PreparedQueryDelete query.WriteRequest.Token = "" err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply) if !acl.IsErrPermissionDenied(err) { t.Fatalf("bad: %v", err) } // Try again with the original token. This should go through. query.WriteRequest.Token = token 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 { if err.Error() != ErrQueryNotFound.Error() { 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.WriteRequest.Token = token if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil { t.Fatalf("err: %v", err) } // Check that it's there, and again make sure that the token did not get // captured. query.Query.ID = reply query.Query.Token = "" { 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 not have captured a token. query.Query.Token = "" { 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 { if err.Error() != ErrQueryNotFound.Error() { t.Fatalf("err: %v", err) } } if len(resp.Queries) != 0 { t.Fatalf("bad: %v", resp) } } // Use the root token to make a query under a different name. query.Op = structs.PreparedQueryCreate query.Query.ID = "" query.Query.Name = "cassandra" query.WriteRequest.Token = "root" if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil { t.Fatalf("err: %v", err) } // Check that it's there and that the token did not get captured. query.Query.ID = reply query.Query.Token = "" { 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) } } // Now try to change that to redis with the valid redis token. This will // fail because that token can't change cassandra queries. query.Op = structs.PreparedQueryUpdate query.Query.Name = "redis" query.WriteRequest.Token = token err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply) if !acl.IsErrPermissionDenied(err) { t.Fatalf("bad: %v", err) } } func TestPreparedQuery_Apply_ForwardLeader(t *testing.T) { t.Parallel() dir1, s1 := testServerWithConfig(t, func(c *Config) { c.Bootstrap = false }) 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. joinLAN(t, s2, s1) testrpc.WaitForLeader(t, s1.RPC, "dc1") testrpc.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{ Name: "test", 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) { t.Parallel() query := &structs.PreparedQuery{} err := parseQuery(query, true) if err == nil || !strings.Contains(err.Error(), "Must be bound to a session") { t.Fatalf("bad: %v", err) } query.Session = "adf4238a-882b-9ddc-4a9d-5b6758e4159e" err = parseQuery(query, true) if err == nil || !strings.Contains(err.Error(), "Must provide a Service") { t.Fatalf("bad: %v", err) } query.Session = "" query.Template.Type = "some-kind-of-template" err = parseQuery(query, true) if err == nil || !strings.Contains(err.Error(), "Must provide a Service") { t.Fatalf("bad: %v", err) } query.Template.Type = "" err = parseQuery(query, false) if err == nil || !strings.Contains(err.Error(), "Must provide a Service") { t.Fatalf("bad: %v", err) } // None of the rest of these care about version 8 ACL enforcement. for _, version8 := range []bool{true, false} { query = &structs.PreparedQuery{} query.Session = "adf4238a-882b-9ddc-4a9d-5b6758e4159e" query.Service.Service = "foo" if err := parseQuery(query, version8); err != nil { t.Fatalf("err: %v", err) } query.Token = redactedToken err = parseQuery(query, version8) if err == nil || !strings.Contains(err.Error(), "Bad Token") { t.Fatalf("bad: %v", err) } query.Token = "adf4238a-882b-9ddc-4a9d-5b6758e4159e" if err := parseQuery(query, version8); err != nil { t.Fatalf("err: %v", err) } query.Service.Failover.NearestN = -1 err = parseQuery(query, version8) if err == nil || !strings.Contains(err.Error(), "Bad NearestN") { t.Fatalf("bad: %v", err) } query.Service.Failover.NearestN = 3 if err := parseQuery(query, version8); err != nil { t.Fatalf("err: %v", err) } query.DNS.TTL = "two fortnights" err = parseQuery(query, version8) if err == nil || !strings.Contains(err.Error(), "Bad DNS TTL") { t.Fatalf("bad: %v", err) } query.DNS.TTL = "-3s" err = parseQuery(query, version8) if err == nil || !strings.Contains(err.Error(), "must be >=0") { t.Fatalf("bad: %v", err) } query.DNS.TTL = "3s" if err := parseQuery(query, version8); err != nil { t.Fatalf("err: %v", err) } query.Service.NodeMeta = map[string]string{"": "somevalue"} err = parseQuery(query, version8) if err == nil || !strings.Contains(err.Error(), "cannot be blank") { t.Fatalf("bad: %v", err) } query.Service.NodeMeta = map[string]string{"somekey": "somevalue"} if err := parseQuery(query, version8); err != nil { t.Fatalf("err: %v", err) } } } func TestPreparedQuery_ACLDeny_Catchall_Template(t *testing.T) { t.Parallel() 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() testrpc.WaitForLeader(t, s1.RPC, "dc1") // Create an ACL with write permissions for any prefix. var token string { var rules = ` query "" { policy = "write" } ` 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 catch-all template. query := structs.PreparedQueryRequest{ Datacenter: "dc1", Op: structs.PreparedQueryCreate, Query: &structs.PreparedQuery{ Name: "", Token: "5e1e24e5-1329-f86f-18c6-3d3734edb2cd", Template: structs.QueryTemplateOptions{ Type: structs.QueryTemplateTypeNamePrefixMatch, }, Service: structs.ServiceQuery{ Service: "${name.full}", }, }, } 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 !acl.IsErrPermissionDenied(err) { t.Fatalf("bad: %v", err) } // Now add the token and try again. query.WriteRequest.Token = token if err = msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil { t.Fatalf("err: %v", err) } // Capture the ID and read back the query to verify. Note that the token // will be redacted since this isn't a management token. query.Query.ID = reply query.Query.Token = redactedToken { req := &structs.PreparedQuerySpecificRequest{ Datacenter: "dc1", QueryID: query.Query.ID, QueryOptions: structs.QueryOptions{Token: token}, } 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 query by ID without a token and make sure it gets denied, even // though this has an empty name and would normally be shown. { req := &structs.PreparedQuerySpecificRequest{ Datacenter: "dc1", QueryID: query.Query.ID, } var resp structs.IndexedPreparedQueries err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Get", req, &resp) if !acl.IsErrPermissionDenied(err) { t.Fatalf("bad: %v", err) } if len(resp.Queries) != 0 { t.Fatalf("bad: %v", resp) } } // We should get the same result listing all the queries without a // token. { req := &structs.DCSpecificRequest{ Datacenter: "dc1", } 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) } } // But a management token should be able to see it, and the real token. query.Query.Token = "5e1e24e5-1329-f86f-18c6-3d3734edb2cd" { 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) } } // Explaining should also be denied without a token. { req := &structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: "anything", } var resp structs.PreparedQueryExplainResponse err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Explain", req, &resp) if !acl.IsErrPermissionDenied(err) { t.Fatalf("bad: %v", err) } } // The user can explain and see the redacted token. query.Query.Token = redactedToken query.Query.Service.Service = "anything" { req := &structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: "anything", QueryOptions: structs.QueryOptions{Token: token}, } var resp structs.PreparedQueryExplainResponse err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Explain", req, &resp) if err != nil { t.Fatalf("err: %v", err) } actual := &resp.Query actual.CreateIndex, actual.ModifyIndex = 0, 0 if !reflect.DeepEqual(actual, query.Query) { t.Fatalf("bad: %v", actual) } } // Make sure the management token can also explain and see the token. query.Query.Token = "5e1e24e5-1329-f86f-18c6-3d3734edb2cd" query.Query.Service.Service = "anything" { req := &structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: "anything", QueryOptions: structs.QueryOptions{Token: "root"}, } var resp structs.PreparedQueryExplainResponse err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Explain", req, &resp) if err != nil { t.Fatalf("err: %v", err) } actual := &resp.Query actual.CreateIndex, actual.ModifyIndex = 0, 0 if !reflect.DeepEqual(actual, query.Query) { t.Fatalf("bad: %v", actual) } } } func TestPreparedQuery_Get(t *testing.T) { t.Parallel() 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() testrpc.WaitForLeader(t, s1.RPC, "dc1") // Create an ACL with write permissions for redis queries. var token string { var rules = ` query "redis" { policy = "write" } ` 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 bare bones query. query := structs.PreparedQueryRequest{ Datacenter: "dc1", Op: structs.PreparedQueryCreate, Query: &structs.PreparedQuery{ Name: "redis-master", Service: structs.ServiceQuery{ Service: "the-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, then read back the query to verify. query.Query.ID = reply { req := &structs.PreparedQuerySpecificRequest{ Datacenter: "dc1", QueryID: query.Query.ID, QueryOptions: structs.QueryOptions{Token: token}, } 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 again with no token, which should return an error. { 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 !acl.IsErrPermissionDenied(err) { 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) } } // Create a session. var session string { req := structs.SessionRequest{ Datacenter: "dc1", Op: structs.SessionCreate, Session: structs.Session{ Node: s1.config.NodeName, }, } if err := msgpackrpc.CallWithCodec(codec, "Session.Apply", &req, &session); err != nil { t.Fatalf("err: %v", err) } } // Now update the query to take away its name. query.Op = structs.PreparedQueryUpdate query.Query.Name = "" query.Query.Session = session if err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil { t.Fatalf("err: %v", err) } // Try again with no token, this should work since this query is only // managed by an ID (no name) so no ACLs apply to it. { req := &structs.PreparedQuerySpecificRequest{ Datacenter: "dc1", QueryID: query.Query.ID, QueryOptions: structs.QueryOptions{Token: ""}, } 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) } } // Capture a token. query.Op = structs.PreparedQueryUpdate query.Query.Token = "le-token" if err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil { t.Fatalf("err: %v", err) } // This should get redacted when we read it back without a token. query.Query.Token = redactedToken { req := &structs.PreparedQuerySpecificRequest{ Datacenter: "dc1", QueryID: query.Query.ID, QueryOptions: structs.QueryOptions{Token: ""}, } 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) } } // But a management token should be able to see it. query.Query.Token = "le-token" { 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: token}, } var resp structs.IndexedPreparedQueries if err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Get", req, &resp); err != nil { if err.Error() != ErrQueryNotFound.Error() { t.Fatalf("err: %v", err) } } if len(resp.Queries) != 0 { t.Fatalf("bad: %v", resp) } } } func TestPreparedQuery_List(t *testing.T) { t.Parallel() 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() testrpc.WaitForLeader(t, s1.RPC, "dc1") // Create an ACL with write permissions for redis queries. var token string { var rules = ` query "redis" { policy = "write" } ` 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) } } // Query with a legit token but no queries. { req := &structs.DCSpecificRequest{ Datacenter: "dc1", QueryOptions: structs.QueryOptions{Token: token}, } 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: "redis-master", Token: "le-token", Service: structs.ServiceQuery{ Service: "the-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 read back the query to verify. We also make sure // the captured token gets redacted. query.Query.ID = reply query.Query.Token = redactedToken { req := &structs.DCSpecificRequest{ Datacenter: "dc1", QueryOptions: structs.QueryOptions{Token: token}, } 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) } } // An empty token should result in an empty list because of ACL // filtering. { req := &structs.DCSpecificRequest{ Datacenter: "dc1", QueryOptions: structs.QueryOptions{Token: ""}, } 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) } } // But a management token should work, and be able to see the captured // token. query.Query.Token = "le-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) } } // Create a session. var session string { req := structs.SessionRequest{ Datacenter: "dc1", Op: structs.SessionCreate, Session: structs.Session{ Node: s1.config.NodeName, }, } if err := msgpackrpc.CallWithCodec(codec, "Session.Apply", &req, &session); err != nil { t.Fatalf("err: %v", err) } } // Now take away the query name. query.Op = structs.PreparedQueryUpdate query.Query.Name = "" query.Query.Session = session if err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil { t.Fatalf("err: %v", err) } // A query with the redis token shouldn't show anything since it doesn't // match any un-named queries. { req := &structs.DCSpecificRequest{ Datacenter: "dc1", QueryOptions: structs.QueryOptions{Token: token}, } 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) } } // But a management token should work. { 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) } } } func TestPreparedQuery_Explain(t *testing.T) { t.Parallel() 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() testrpc.WaitForLeader(t, s1.RPC, "dc1") // Create an ACL with write permissions for prod- queries. var token string { var rules = ` query "prod-" { policy = "write" } ` 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 template. query := structs.PreparedQueryRequest{ Datacenter: "dc1", Op: structs.PreparedQueryCreate, Query: &structs.PreparedQuery{ Name: "prod-", Token: "5e1e24e5-1329-f86f-18c6-3d3734edb2cd", Template: structs.QueryTemplateOptions{ Type: structs.QueryTemplateTypeNamePrefixMatch, }, Service: structs.ServiceQuery{ Service: "${name.full}", }, }, WriteRequest: structs.WriteRequest{Token: token}, } var reply string if err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Apply", &query, &reply); err != nil { t.Fatalf("err: %v", err) } // Explain via the management token. query.Query.ID = reply query.Query.Service.Service = "prod-redis" { req := &structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: "prod-redis", QueryOptions: structs.QueryOptions{Token: "root"}, } var resp structs.PreparedQueryExplainResponse err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Explain", req, &resp) if err != nil { t.Fatalf("err: %v", err) } actual := &resp.Query actual.CreateIndex, actual.ModifyIndex = 0, 0 if !reflect.DeepEqual(actual, query.Query) { t.Fatalf("bad: %v", actual) } } // Explain via the user token, which will redact the captured token. query.Query.Token = redactedToken query.Query.Service.Service = "prod-redis" { req := &structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: "prod-redis", QueryOptions: structs.QueryOptions{Token: token}, } var resp structs.PreparedQueryExplainResponse err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Explain", req, &resp) if err != nil { t.Fatalf("err: %v", err) } actual := &resp.Query actual.CreateIndex, actual.ModifyIndex = 0, 0 if !reflect.DeepEqual(actual, query.Query) { t.Fatalf("bad: %v", actual) } } // Explaining should be denied without a token, since the user isn't // allowed to see the query. { req := &structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: "prod-redis", } var resp structs.PreparedQueryExplainResponse err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Explain", req, &resp) if !acl.IsErrPermissionDenied(err) { t.Fatalf("bad: %v", err) } } // Try to explain a bogus ID. { req := &structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: generateUUID(), QueryOptions: structs.QueryOptions{Token: "root"}, } var resp structs.IndexedPreparedQueries if err := msgpackrpc.CallWithCodec(codec, "PreparedQuery.Explain", req, &resp); err != nil { if err.Error() != ErrQueryNotFound.Error() { t.Fatalf("err: %v", err) } } } } // 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) { t.Parallel() dir1, s1 := testServerWithConfig(t, func(c *Config) { c.ACLDatacenter = "dc1" c.ACLMasterToken = "root" c.ACLDefaultPolicy = "deny" c.ACLEnforceVersion8 = false }) 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" }) defer os.RemoveAll(dir2) defer s2.Shutdown() codec2 := rpcClient(t, s2) defer codec2.Close() testrpc.WaitForLeader(t, s1.RPC, "dc1") testrpc.WaitForLeader(t, s2.RPC, "dc2") // Try to WAN join. joinWAN(t, s2, s1) retry.Run(t, func(r *retry.R) { if got, want := len(s1.WANMembers()), 2; got != want { r.Fatalf("got %d WAN members want %d", got, want) } }) // Create an ACL with read permission to the service. var execToken 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, &execToken); 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), NodeMeta: map[string]string{ "group": fmt.Sprintf("%d", i/5), "instance_type": "t2.micro", }, Service: &structs.NodeService{ Service: "foo", Port: 8000, Tags: []string{dc, fmt.Sprintf("tag%d", i+1)}, }, WriteRequest: structs.WriteRequest{Token: "root"}, } if i == 0 { req.NodeMeta["unique"] = "true" } 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{ Name: "test", Service: structs.ServiceQuery{ Service: "foo", }, DNS: structs.QueryDNSOptions{ TTL: "10s", }, }, WriteRequest: structs.WriteRequest{Token: "root"}, } 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 || 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, QueryOptions: structs.QueryOptions{Token: execToken}, } 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 || reply.Service != query.Query.Service.Service || !reflect.DeepEqual(reply.DNS, query.Query.DNS) || !reply.QueryMeta.KnownLeader { t.Fatalf("bad: %v", reply) } } // Try with a limit. { req := structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: query.Query.ID, Limit: 3, QueryOptions: structs.QueryOptions{Token: execToken}, } 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 || reply.Service != query.Query.Service.Service || !reflect.DeepEqual(reply.DNS, query.Query.DNS) || !reply.QueryMeta.KnownLeader { t.Fatalf("bad: %v", reply) } } // Run various service queries with node metadata filters. if false { cases := []struct { filters map[string]string numNodes int }{ { filters: map[string]string{}, numNodes: 10, }, { filters: map[string]string{"instance_type": "t2.micro"}, numNodes: 10, }, { filters: map[string]string{"group": "1"}, numNodes: 5, }, { filters: map[string]string{"group": "0", "unique": "true"}, numNodes: 1, }, } for _, tc := range cases { nodeMetaQuery := structs.PreparedQueryRequest{ Datacenter: "dc1", Op: structs.PreparedQueryCreate, Query: &structs.PreparedQuery{ Service: structs.ServiceQuery{ Service: "foo", NodeMeta: tc.filters, }, DNS: structs.QueryDNSOptions{ TTL: "10s", }, }, WriteRequest: structs.WriteRequest{Token: "root"}, } if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Apply", &nodeMetaQuery, &nodeMetaQuery.Query.ID); err != nil { t.Fatalf("err: %v", err) } req := structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: nodeMetaQuery.Query.ID, QueryOptions: structs.QueryOptions{Token: execToken}, } var reply structs.PreparedQueryExecuteResponse if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Execute", &req, &reply); err != nil { t.Fatalf("err: %v", err) } if len(reply.Nodes) != tc.numNodes { t.Fatalf("bad: %v, %v", len(reply.Nodes), tc.numNodes) } for _, node := range reply.Nodes { if !structs.SatisfiesMetaFilters(node.Node.Meta, tc.filters) { t.Fatalf("bad: %v", node.Node.Meta) } } } } // 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(3 * 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", }, QueryOptions: structs.QueryOptions{Token: execToken}, } 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 || reply.Service != query.Query.Service.Service || !reflect.DeepEqual(reply.DNS, query.Query.DNS) || !reply.QueryMeta.KnownLeader { 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, QueryOptions: structs.QueryOptions{Token: execToken}, } 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 || reply.Service != query.Query.Service.Service || !reflect.DeepEqual(reply.DNS, query.Query.DNS) || !reply.QueryMeta.KnownLeader { 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)) } // Set the query to return results nearest to node3. This is the only // node with coordinates, and it carries the service we are asking for, // so node3 should always show up first. query.Op = structs.PreparedQueryUpdate query.Query.Service.Near = "node3" if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Apply", &query, &query.Query.ID); err != nil { t.Fatalf("err: %v", err) } // Now run the query and make sure the sort looks right. { req := structs.PreparedQueryExecuteRequest{ Agent: structs.QuerySource{ Datacenter: "dc1", Node: "node3", }, Datacenter: "dc1", QueryIDOrName: query.Query.ID, QueryOptions: structs.QueryOptions{Token: execToken}, } for i := 0; i < 10; i++ { var reply structs.PreparedQueryExecuteResponse if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Execute", &req, &reply); err != nil { t.Fatalf("err: %v", err) } if n := len(reply.Nodes); n != 10 { t.Fatalf("expect 10 nodes, got: %d", n) } if node := reply.Nodes[0].Node.Node; node != "node3" { t.Fatalf("expect node3 first, got: %q", node) } } } // Query again, but this time set a client-supplied query source. This // proves that we allow overriding the baked-in value with ?near. { // Set up the query with a non-existent node. This will cause the // nodes to be shuffled if the passed node is respected, proving // that we allow the override to happen. req := structs.PreparedQueryExecuteRequest{ Source: structs.QuerySource{ Datacenter: "dc1", Node: "foo", }, Agent: structs.QuerySource{ Datacenter: "dc1", Node: "node3", }, Datacenter: "dc1", QueryIDOrName: query.Query.ID, QueryOptions: structs.QueryOptions{Token: execToken}, } shuffled := false for i := 0; i < 10; i++ { var reply structs.PreparedQueryExecuteResponse if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Execute", &req, &reply); err != nil { t.Fatalf("err: %v", err) } if n := len(reply.Nodes); n != 10 { t.Fatalf("expect 10 nodes, got: %d", n) } if node := reply.Nodes[0].Node.Node; node != "node3" { shuffled = true break } } if !shuffled { t.Fatalf("expect nodes to be shuffled") } } // If the exact node we are sorting near appears in the list, make sure it // gets popped to the front of the result. { req := structs.PreparedQueryExecuteRequest{ Source: structs.QuerySource{ Datacenter: "dc1", Node: "node1", }, Datacenter: "dc1", QueryIDOrName: query.Query.ID, QueryOptions: structs.QueryOptions{Token: execToken}, } for i := 0; i < 10; i++ { var reply structs.PreparedQueryExecuteResponse if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Execute", &req, &reply); err != nil { t.Fatalf("err: %v", err) } if n := len(reply.Nodes); n != 10 { t.Fatalf("expect 10 nodes, got: %d", n) } if node := reply.Nodes[0].Node.Node; node != "node1" { t.Fatalf("expect node1 first, got: %q", node) } } } // Bake the magic "_agent" flag into the query. query.Query.Service.Near = "_agent" if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Apply", &query, &query.Query.ID); err != nil { t.Fatalf("err: %v", err) } // Check that we sort the local agent first when the magic flag is set. { req := structs.PreparedQueryExecuteRequest{ Agent: structs.QuerySource{ Datacenter: "dc1", Node: "node3", }, Datacenter: "dc1", QueryIDOrName: query.Query.ID, QueryOptions: structs.QueryOptions{Token: execToken}, } for i := 0; i < 10; i++ { var reply structs.PreparedQueryExecuteResponse if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Execute", &req, &reply); err != nil { t.Fatalf("err: %v", err) } if n := len(reply.Nodes); n != 10 { t.Fatalf("expect 10 nodes, got: %d", n) } if node := reply.Nodes[0].Node.Node; node != "node3" { t.Fatalf("expect node3 first, got: %q", node) } } } // Check that the query isn't just sorting "node3" first because we // provided it in the Agent query source. Proves that we use the // Agent source when the magic "_agent" flag is passed. { req := structs.PreparedQueryExecuteRequest{ Agent: structs.QuerySource{ Datacenter: "dc1", Node: "foo", }, Datacenter: "dc1", QueryIDOrName: query.Query.ID, QueryOptions: structs.QueryOptions{Token: execToken}, } // Expect the set to be shuffled since we have no coordinates // on the "foo" node. shuffled := false for i := 0; i < 10; i++ { var reply structs.PreparedQueryExecuteResponse if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Execute", &req, &reply); err != nil { t.Fatalf("err: %v", err) } if n := len(reply.Nodes); n != 10 { t.Fatalf("expect 10 nodes, got: %d", n) } if node := reply.Nodes[0].Node.Node; node != "node3" { shuffled = true break } } if !shuffled { t.Fatal("expect nodes to be shuffled") } } // Shuffles if the response comes from a non-local DC. Proves that the // agent query source does not interfere with the order. { req := structs.PreparedQueryExecuteRequest{ Source: structs.QuerySource{ Datacenter: "dc2", Node: "node3", }, Agent: structs.QuerySource{ Datacenter: "dc1", Node: "node3", }, Datacenter: "dc1", QueryIDOrName: query.Query.ID, QueryOptions: structs.QueryOptions{Token: execToken}, } shuffled := false for i := 0; i < 10; i++ { var reply structs.PreparedQueryExecuteResponse if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Execute", &req, &reply); err != nil { t.Fatalf("err: %v", err) } if n := len(reply.Nodes); n != 10 { t.Fatalf("expect 10 nodes, got: %d", n) } if reply.Nodes[0].Node.Node != "node3" { shuffled = true break } } if !shuffled { t.Fatal("expect node shuffle for remote results") } } // Un-bake the near parameter. query.Query.Service.Near = "" if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Apply", &query, &query.Query.ID); err != nil { t.Fatalf("err: %v", err) } // 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", api.HealthCritical) // The failing node should be filtered. { req := structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: query.Query.ID, QueryOptions: structs.QueryOptions{Token: execToken}, } 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 || reply.Service != query.Query.Service.Service || !reflect.DeepEqual(reply.DNS, query.Query.DNS) || !reply.QueryMeta.KnownLeader { 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", api.HealthWarning) { req := structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: query.Query.ID, QueryOptions: structs.QueryOptions{Token: execToken}, } 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 || reply.Service != query.Query.Service.Service || !reflect.DeepEqual(reply.DNS, query.Query.DNS) || !reply.QueryMeta.KnownLeader { t.Fatalf("bad: %v", reply) } } // Make the query more picky so it excludes warning nodes. 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, QueryOptions: structs.QueryOptions{Token: execToken}, } 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 || reply.Service != query.Query.Service.Service || !reflect.DeepEqual(reply.DNS, query.Query.DNS) || !reply.QueryMeta.KnownLeader { t.Fatalf("bad: %v", reply) } for _, node := range reply.Nodes { if node.Node.Node == "node1" { t.Fatalf("bad: %v", node) } } } // Make the query ignore all our health checks (which have "failing" ID // implicitly from their name). query.Query.Service.IgnoreCheckIDs = []types.CheckID{"failing"} if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Apply", &query, &query.Query.ID); err != nil { t.Fatalf("err: %v", err) } // We should end up with 10 nodes again { req := structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: query.Query.ID, QueryOptions: structs.QueryOptions{Token: execToken}, } 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.Service != query.Query.Service.Service || !reflect.DeepEqual(reply.DNS, query.Query.DNS) || !reply.QueryMeta.KnownLeader { t.Fatalf("bad: %v", reply) } } // Undo that so all the following tests aren't broken! query.Query.Service.IgnoreCheckIDs = nil if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Apply", &query, &query.Query.ID); err != nil { t.Fatalf("err: %v", err) } // 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, QueryOptions: structs.QueryOptions{Token: execToken}, } 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 || reply.Service != query.Query.Service.Service || !reflect.DeepEqual(reply.DNS, query.Query.DNS) || !reply.QueryMeta.KnownLeader { t.Fatalf("bad: %v", reply) } for _, node := range reply.Nodes { if node.Node.Node == "node1" || node.Node.Node == "node3" { t.Fatalf("bad: %v", node) } } } // Make a new exec token that can't read the service. var denyToken string { var rules = ` service "foo" { policy = "deny" } ` 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, &denyToken); err != nil { t.Fatalf("err: %v", err) } } // Make sure the query gets denied with this token. { req := structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: query.Query.ID, QueryOptions: structs.QueryOptions{Token: denyToken}, } 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 || reply.Service != query.Query.Service.Service || !reflect.DeepEqual(reply.DNS, query.Query.DNS) || !reply.QueryMeta.KnownLeader { t.Fatalf("bad: %v", reply) } } // Bake the exec token into the query. query.Query.Token = execToken if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Apply", &query, &query.Query.ID); err != nil { t.Fatalf("err: %v", err) } // Now even querying with the deny token should work. { req := structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: query.Query.ID, QueryOptions: structs.QueryOptions{Token: denyToken}, } 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 || reply.Service != query.Query.Service.Service || !reflect.DeepEqual(reply.DNS, query.Query.DNS) || !reply.QueryMeta.KnownLeader { t.Fatalf("bad: %v", reply) } for _, node := range reply.Nodes { if node.Node.Node == "node1" || node.Node.Node == "node3" { t.Fatalf("bad: %v", node) } } } // Un-bake the token. query.Query.Token = "" if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Apply", &query, &query.Query.ID); err != nil { t.Fatalf("err: %v", err) } // Make sure the query gets denied again with the deny token. { req := structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: query.Query.ID, QueryOptions: structs.QueryOptions{Token: denyToken}, } 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 || reply.Service != query.Query.Service.Service || !reflect.DeepEqual(reply.DNS, query.Query.DNS) || !reply.QueryMeta.KnownLeader { t.Fatalf("bad: %v", reply) } } // Turn on version 8 ACLs, which will start to filter even with the exec // token. s1.config.ACLEnforceVersion8 = true { req := structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: query.Query.ID, QueryOptions: structs.QueryOptions{Token: execToken}, } 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 || reply.Service != query.Query.Service.Service || !reflect.DeepEqual(reply.DNS, query.Query.DNS) || !reply.QueryMeta.KnownLeader { t.Fatalf("bad: %v", reply) } } // Revert version 8 ACLs and make sure the query works again. s1.config.ACLEnforceVersion8 = false { req := structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: query.Query.ID, QueryOptions: structs.QueryOptions{Token: execToken}, } 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 || reply.Service != query.Query.Service.Service || !reflect.DeepEqual(reply.DNS, query.Query.DNS) || !reply.QueryMeta.KnownLeader { 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), api.HealthCritical) } { req := structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: query.Query.ID, QueryOptions: structs.QueryOptions{Token: execToken}, } 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 || reply.Service != query.Query.Service.Service || !reflect.DeepEqual(reply.DNS, query.Query.DNS) || !reply.QueryMeta.KnownLeader { 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, QueryOptions: structs.QueryOptions{Token: execToken}, } 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 || reply.Service != query.Query.Service.Service || !reflect.DeepEqual(reply.DNS, query.Query.DNS) || !reply.QueryMeta.KnownLeader { 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{ Token: execToken, 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 || reply.Service != query.Query.Service.Service || !reflect.DeepEqual(reply.DNS, query.Query.DNS) || !reply.QueryMeta.KnownLeader { 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, QueryOptions: structs.QueryOptions{Token: execToken}, } 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 || reply.Service != query.Query.Service.Service || !reflect.DeepEqual(reply.DNS, query.Query.DNS) || !reply.QueryMeta.KnownLeader { 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)) } // Make sure the query response from dc2 gets denied with the deny token. { req := structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: query.Query.ID, QueryOptions: structs.QueryOptions{Token: denyToken}, } 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 != "dc2" || reply.Failovers != 1 || reply.Service != query.Query.Service.Service || !reflect.DeepEqual(reply.DNS, query.Query.DNS) || !reply.QueryMeta.KnownLeader { t.Fatalf("bad: %v", reply) } } // Bake the exec token into the query. query.Query.Token = execToken if err := msgpackrpc.CallWithCodec(codec1, "PreparedQuery.Apply", &query, &query.Query.ID); err != nil { t.Fatalf("err: %v", err) } // Now even querying with the deny token should work. { req := structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: query.Query.ID, QueryOptions: structs.QueryOptions{Token: denyToken}, } 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 || reply.Service != query.Query.Service.Service || !reflect.DeepEqual(reply.DNS, query.Query.DNS) || !reply.QueryMeta.KnownLeader { t.Fatalf("bad: %v", reply) } for _, node := range reply.Nodes { if node.Node.Node == "node3" { t.Fatalf("bad: %v", node) } } } } func TestPreparedQuery_Execute_ForwardLeader(t *testing.T) { t.Parallel() 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. joinLAN(t, s2, s1) testrpc.WaitForLeader(t, s1.RPC, "dc1") testrpc.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{ Name: "test", 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_Execute_ConnectExact(t *testing.T) { t.Parallel() require := require.New(t) dir1, s1 := testServer(t) defer os.RemoveAll(dir1) defer s1.Shutdown() codec := rpcClient(t, s1) defer codec.Close() // Setup 3 services on 3 nodes: one is non-Connect, one is Connect native, // and one is a proxy to the non-Connect one. for i := 0; i < 3; i++ { req := structs.RegisterRequest{ Datacenter: "dc1", Node: fmt.Sprintf("node%d", i+1), Address: fmt.Sprintf("127.0.0.%d", i+1), Service: &structs.NodeService{ Service: "foo", Port: 8000, }, } switch i { case 0: // Default do nothing case 1: // Connect native req.Service.Connect.Native = true case 2: // Connect proxy req.Service.Kind = structs.ServiceKindConnectProxy req.Service.ProxyDestination = req.Service.Service req.Service.Service = "proxy" } var reply struct{} require.NoError(msgpackrpc.CallWithCodec(codec, "Catalog.Register", &req, &reply)) } // The query, start with connect disabled query := structs.PreparedQueryRequest{ Datacenter: "dc1", Op: structs.PreparedQueryCreate, Query: &structs.PreparedQuery{ Name: "test", Service: structs.ServiceQuery{ Service: "foo", }, DNS: structs.QueryDNSOptions{ TTL: "10s", }, }, } require.NoError(msgpackrpc.CallWithCodec( codec, "PreparedQuery.Apply", &query, &query.Query.ID)) // In the future we'll run updates query.Op = structs.PreparedQueryUpdate // Run the registered query. { req := structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: query.Query.ID, } var reply structs.PreparedQueryExecuteResponse require.NoError(msgpackrpc.CallWithCodec( codec, "PreparedQuery.Execute", &req, &reply)) // Result should have two because it omits the proxy whose name // doesn't match the query. require.Len(reply.Nodes, 2) require.Equal(query.Query.Service.Service, reply.Service) require.Equal(query.Query.DNS, reply.DNS) require.True(reply.QueryMeta.KnownLeader, "queried leader") } // Run with the Connect setting specified on the request { req := structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: query.Query.ID, Connect: true, } var reply structs.PreparedQueryExecuteResponse require.NoError(msgpackrpc.CallWithCodec( codec, "PreparedQuery.Execute", &req, &reply)) // Result should have two because we should get the native AND // the proxy (since the destination matches our service name). require.Len(reply.Nodes, 2) require.Equal(query.Query.Service.Service, reply.Service) require.Equal(query.Query.DNS, reply.DNS) require.True(reply.QueryMeta.KnownLeader, "queried leader") // Make sure the native is the first one if !reply.Nodes[0].Service.Connect.Native { reply.Nodes[0], reply.Nodes[1] = reply.Nodes[1], reply.Nodes[0] } require.True(reply.Nodes[0].Service.Connect.Native, "native") require.Equal(reply.Service, reply.Nodes[0].Service.Service) require.Equal(structs.ServiceKindConnectProxy, reply.Nodes[1].Service.Kind) require.Equal(reply.Service, reply.Nodes[1].Service.ProxyDestination) } // Update the query query.Query.Service.Connect = true require.NoError(msgpackrpc.CallWithCodec( codec, "PreparedQuery.Apply", &query, &query.Query.ID)) // Run the registered query. { req := structs.PreparedQueryExecuteRequest{ Datacenter: "dc1", QueryIDOrName: query.Query.ID, } var reply structs.PreparedQueryExecuteResponse require.NoError(msgpackrpc.CallWithCodec( codec, "PreparedQuery.Execute", &req, &reply)) // Result should have two because we should get the native AND // the proxy (since the destination matches our service name). require.Len(reply.Nodes, 2) require.Equal(query.Query.Service.Service, reply.Service) require.Equal(query.Query.DNS, reply.DNS) require.True(reply.QueryMeta.KnownLeader, "queried leader") // Make sure the native is the first one if !reply.Nodes[0].Service.Connect.Native { reply.Nodes[0], reply.Nodes[1] = reply.Nodes[1], reply.Nodes[0] } require.True(reply.Nodes[0].Service.Connect.Native, "native") require.Equal(reply.Service, reply.Nodes[0].Service.Service) require.Equal(structs.ServiceKindConnectProxy, reply.Nodes[1].Service.Kind) require.Equal(reply.Service, reply.Nodes[1].Service.ProxyDestination) } // Unset the query query.Query.Service.Connect = false require.NoError(msgpackrpc.CallWithCodec( codec, "PreparedQuery.Apply", &query, &query.Query.ID)) } func TestPreparedQuery_tagFilter(t *testing.T) { t.Parallel() 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) } ret = stringify(tagFilter([]string{""}, testNodes())) if ret != "" { t.Fatalf("bad: %s", ret) } } func TestPreparedQuery_Wrapper(t *testing.T) { t.Parallel() dir1, s1 := testServerWithConfig(t, func(c *Config) { c.ACLDatacenter = "dc1" c.ACLMasterToken = "root" c.ACLDefaultPolicy = "deny" }) defer os.RemoveAll(dir1) defer s1.Shutdown() 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() testrpc.WaitForLeader(t, s1.RPC, "dc1") testrpc.WaitForLeader(t, s2.RPC, "dc2") // Try to WAN join. joinWAN(t, s2, s1) // 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) } return nil } func TestPreparedQuery_queryFailover(t *testing.T) { t.Parallel() query := &structs.PreparedQuery{ Name: "test", 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, &structs.PreparedQueryExecuteRequest{}, &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, &structs.PreparedQueryExecuteRequest{}, &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, &structs.PreparedQueryExecuteRequest{}, &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, &structs.PreparedQueryExecuteRequest{}, &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, &structs.PreparedQueryExecuteRequest{}, &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, &structs.PreparedQueryExecuteRequest{}, &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, &structs.PreparedQueryExecuteRequest{}, &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, &structs.PreparedQueryExecuteRequest{}, &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, &structs.PreparedQueryExecuteRequest{}, &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, &structs.PreparedQueryExecuteRequest{}, &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, &structs.PreparedQueryExecuteRequest{}, &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, &structs.PreparedQueryExecuteRequest{ Limit: 5, QueryOptions: 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) } } }