state: add a regression test for state store schema

To allow the index to be refactored without accidental changes.

To update the expected value run: 'go test ./agent/consul/state -update'

agent/consul/state/schema_oss_test.go

@@ -0,0 +1,5 @@
+// +build !consulent
+
+package state
+
+var stateStoreSchemaExpected = "TestStateStoreSchema.golden"

agent/consul/state/schema_test.go

@@ -1,17 +1,100 @@
 package state
 
 import (
+	"bytes"
+	"fmt"
+	"reflect"
+	"runtime"
+	"sort"
 	"testing"
 
 	"github.com/hashicorp/go-memdb"
+	"github.com/stretchr/testify/require"
+
+	"github.com/hashicorp/consul/internal/testing/golden"
 )
 
-func TestStateStore_Schema(t *testing.T) {
-	// First call the schema creation
+func TestStateStoreSchema(t *testing.T) {
 	schema := stateStoreSchema()
+	require.NoError(t, schema.Validate())
+
+	_, err := memdb.NewMemDB(schema)
+	require.NoError(t, err)
+
+	actual, err := repr(schema)
+	require.NoError(t, err)
+
+	expected := golden.Get(t, actual, stateStoreSchemaExpected)
+	require.Equal(t, expected, actual)
+}
+
+func repr(schema *memdb.DBSchema) (string, error) {
+	tables := make([]string, 0, len(schema.Tables))
+	for name := range schema.Tables {
+		tables = append(tables, name)
+	}
+	sort.Strings(tables)
+
+	buf := new(bytes.Buffer)
+	for _, name := range tables {
+		fmt.Fprintf(buf, "table=%v\n", name)
 
-	// Try to initialize a new memdb using the schema
-	if _, err := memdb.NewMemDB(schema); err != nil {
-		t.Fatalf("err: %s", err)
+		indexes := indexNames(schema.Tables[name])
+		for _, i := range indexes {
+			index := schema.Tables[name].Indexes[i]
+			fmt.Fprintf(buf, "  index=%v", i)
+			if index.Unique {
+				buf.WriteString(" unique")
+			}
+			if index.AllowMissing {
+				buf.WriteString(" allow-missing")
 			}
+			buf.WriteString("\n")
+			buf.WriteString("    indexer=")
+			formatIndexer(buf, index.Indexer)
+			buf.WriteString("\n")
+		}
+		buf.WriteString("\n")
+	}
+
+	return buf.String(), nil
+}
+
+func formatIndexer(buf *bytes.Buffer, indexer memdb.Indexer) {
+	v := reflect.Indirect(reflect.ValueOf(indexer))
+	typ := v.Type()
+	buf.WriteString(typ.PkgPath() + "." + typ.Name())
+	for i := 0; i < typ.NumField(); i++ {
+		fmt.Fprintf(buf, " %v=", typ.Field(i).Name)
+
+		field := v.Field(i)
+		switch typ.Field(i).Type.Kind() {
+		case reflect.Slice:
+			buf.WriteString("[")
+			for j := 0; j < field.Len(); j++ {
+				if j != 0 {
+					buf.WriteString(", ")
+				}
+				// TODO: handle other types of slices
+				formatIndexer(buf, v.Field(i).Index(j).Interface().(memdb.Indexer))
+			}
+			buf.WriteString("]")
+		case reflect.Func:
+			// Functions are printed as pointer addresses, which change frequently.
+			// Instead use the name.
+			buf.WriteString(runtime.FuncForPC(field.Pointer()).Name())
+		default:
+			fmt.Fprintf(buf, "%v", field)
+		}
+	}
+}
+
+func indexNames(table *memdb.TableSchema) []string {
+	indexes := make([]string, 0, len(table.Indexes))
+	for name := range table.Indexes {
+		indexes = append(indexes, name)
+	}
+
+	sort.Strings(indexes)
+	return indexes
 }

agent/consul/state/testdata/TestStateStoreSchema.golden

@@ -0,0 +1,188 @@
+table=acl-auth-methods
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=Name Lowercase=true
+
+table=acl-binding-rules
+  index=authmethod
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=AuthMethod Lowercase=true
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.UUIDFieldIndex Field=ID
+
+table=acl-policies
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.UUIDFieldIndex Field=ID
+  index=name unique
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=Name Lowercase=true
+
+table=acl-roles
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.UUIDFieldIndex Field=ID
+  index=name unique
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=Name Lowercase=true
+  index=policies allow-missing
+    indexer=github.com/hashicorp/consul/agent/consul/state.RolePoliciesIndex
+
+table=acl-tokens
+  index=accessor unique allow-missing
+    indexer=github.com/hashicorp/go-memdb.UUIDFieldIndex Field=AccessorID
+  index=authmethod allow-missing
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=AuthMethod Lowercase=false
+  index=expires-global allow-missing
+    indexer=github.com/hashicorp/consul/agent/consul/state.TokenExpirationIndex LocalFilter=false
+  index=expires-local allow-missing
+    indexer=github.com/hashicorp/consul/agent/consul/state.TokenExpirationIndex LocalFilter=true
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=SecretID Lowercase=false
+  index=local
+    indexer=github.com/hashicorp/go-memdb.ConditionalIndex Conditional=github.com/hashicorp/consul/agent/consul/state.tokensTableSchema.func1
+  index=needs-upgrade
+    indexer=github.com/hashicorp/go-memdb.ConditionalIndex Conditional=github.com/hashicorp/consul/agent/consul/state.tokensTableSchema.func2
+  index=policies allow-missing
+    indexer=github.com/hashicorp/consul/agent/consul/state.TokenPoliciesIndex
+  index=roles allow-missing
+    indexer=github.com/hashicorp/consul/agent/consul/state.TokenRolesIndex
+
+table=autopilot-config
+  index=id unique allow-missing
+    indexer=github.com/hashicorp/go-memdb.ConditionalIndex Conditional=github.com/hashicorp/consul/agent/consul/state.autopilotConfigTableSchema.func1
+
+table=checks
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.CompoundIndex Indexes=[github.com/hashicorp/go-memdb.StringFieldIndex Field=Node Lowercase=true, github.com/hashicorp/go-memdb.StringFieldIndex Field=CheckID Lowercase=true] AllowMissing=false
+  index=node allow-missing
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=Node Lowercase=true
+  index=node_service allow-missing
+    indexer=github.com/hashicorp/go-memdb.CompoundIndex Indexes=[github.com/hashicorp/go-memdb.StringFieldIndex Field=Node Lowercase=true, github.com/hashicorp/go-memdb.StringFieldIndex Field=ServiceID Lowercase=true] AllowMissing=false
+  index=node_service_check allow-missing
+    indexer=github.com/hashicorp/go-memdb.CompoundIndex Indexes=[github.com/hashicorp/go-memdb.StringFieldIndex Field=Node Lowercase=true, github.com/hashicorp/go-memdb.FieldSetIndex Field=ServiceID] AllowMissing=false
+  index=service allow-missing
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=ServiceName Lowercase=true
+  index=status
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=Status Lowercase=false
+
+table=config-entries
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.CompoundIndex Indexes=[github.com/hashicorp/go-memdb.StringFieldIndex Field=Kind Lowercase=true, github.com/hashicorp/go-memdb.StringFieldIndex Field=Name Lowercase=true] AllowMissing=false
+  index=intention-legacy-id unique allow-missing
+    indexer=github.com/hashicorp/consul/agent/consul/state.ServiceIntentionLegacyIDIndex uuidFieldIndex={}
+  index=intention-source allow-missing
+    indexer=github.com/hashicorp/consul/agent/consul/state.ServiceIntentionSourceIndex
+  index=kind
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=Kind Lowercase=true
+  index=link allow-missing
+    indexer=github.com/hashicorp/consul/agent/consul/state.ConfigEntryLinkIndex
+
+table=connect-ca-builtin
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=ID Lowercase=false
+
+table=connect-ca-config
+  index=id unique allow-missing
+    indexer=github.com/hashicorp/go-memdb.ConditionalIndex Conditional=github.com/hashicorp/consul/agent/consul/state.caConfigTableSchema.func1
+
+table=connect-ca-roots
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=ID Lowercase=false
+
+table=connect-intentions
+  index=destination allow-missing
+    indexer=github.com/hashicorp/go-memdb.CompoundIndex Indexes=[github.com/hashicorp/go-memdb.StringFieldIndex Field=DestinationNS Lowercase=true, github.com/hashicorp/go-memdb.StringFieldIndex Field=DestinationName Lowercase=true] AllowMissing=false
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.UUIDFieldIndex Field=ID
+  index=source allow-missing
+    indexer=github.com/hashicorp/go-memdb.CompoundIndex Indexes=[github.com/hashicorp/go-memdb.StringFieldIndex Field=SourceNS Lowercase=true, github.com/hashicorp/go-memdb.StringFieldIndex Field=SourceName Lowercase=true] AllowMissing=false
+  index=source_destination unique allow-missing
+    indexer=github.com/hashicorp/go-memdb.CompoundIndex Indexes=[github.com/hashicorp/go-memdb.StringFieldIndex Field=SourceNS Lowercase=true, github.com/hashicorp/go-memdb.StringFieldIndex Field=SourceName Lowercase=true, github.com/hashicorp/go-memdb.StringFieldIndex Field=DestinationNS Lowercase=true, github.com/hashicorp/go-memdb.StringFieldIndex Field=DestinationName Lowercase=true] AllowMissing=false
+
+table=coordinates
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.CompoundIndex Indexes=[github.com/hashicorp/go-memdb.StringFieldIndex Field=Node Lowercase=true, github.com/hashicorp/go-memdb.StringFieldIndex Field=Segment Lowercase=true] AllowMissing=true
+  index=node
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=Node Lowercase=true
+
+table=federation-states
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=Datacenter Lowercase=true
+
+table=gateway-services
+  index=gateway
+    indexer=github.com/hashicorp/consul/agent/consul/state.ServiceNameIndex Field=Gateway
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.CompoundIndex Indexes=[github.com/hashicorp/consul/agent/consul/state.ServiceNameIndex Field=Gateway, github.com/hashicorp/consul/agent/consul/state.ServiceNameIndex Field=Service, github.com/hashicorp/go-memdb.IntFieldIndex Field=Port] AllowMissing=false
+  index=service allow-missing
+    indexer=github.com/hashicorp/consul/agent/consul/state.ServiceNameIndex Field=Service
+
+table=index
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=Key Lowercase=true
+
+table=kvs
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=Key Lowercase=false
+  index=session allow-missing
+    indexer=github.com/hashicorp/go-memdb.UUIDFieldIndex Field=Session
+
+table=mesh-topology
+  index=downstream
+    indexer=github.com/hashicorp/consul/agent/consul/state.ServiceNameIndex Field=Downstream
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.CompoundIndex Indexes=[github.com/hashicorp/consul/agent/consul/state.ServiceNameIndex Field=Upstream, github.com/hashicorp/consul/agent/consul/state.ServiceNameIndex Field=Downstream] AllowMissing=false
+  index=upstream allow-missing
+    indexer=github.com/hashicorp/consul/agent/consul/state.ServiceNameIndex Field=Upstream
+
+table=nodes
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=Node Lowercase=true
+  index=meta allow-missing
+    indexer=github.com/hashicorp/go-memdb.StringMapFieldIndex Field=Meta Lowercase=false
+  index=uuid unique allow-missing
+    indexer=github.com/hashicorp/go-memdb.UUIDFieldIndex Field=ID
+
+table=prepared-queries
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.UUIDFieldIndex Field=ID
+  index=name unique allow-missing
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=Name Lowercase=true
+  index=session allow-missing
+    indexer=github.com/hashicorp/go-memdb.UUIDFieldIndex Field=Session
+  index=template unique allow-missing
+    indexer=github.com/hashicorp/consul/agent/consul/state.PreparedQueryIndex
+
+table=services
+  index=connect allow-missing
+    indexer=github.com/hashicorp/consul/agent/consul/state.IndexConnectService
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.CompoundIndex Indexes=[github.com/hashicorp/go-memdb.StringFieldIndex Field=Node Lowercase=true, github.com/hashicorp/go-memdb.StringFieldIndex Field=ServiceID Lowercase=true] AllowMissing=false
+  index=kind
+    indexer=github.com/hashicorp/consul/agent/consul/state.IndexServiceKind
+  index=node
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=Node Lowercase=true
+  index=service allow-missing
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=ServiceName Lowercase=true
+
+table=session_checks
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.CompoundIndex Indexes=[github.com/hashicorp/go-memdb.StringFieldIndex Field=Node Lowercase=true, github.com/hashicorp/consul/agent/consul/state.CheckIDIndex, github.com/hashicorp/go-memdb.UUIDFieldIndex Field=Session] AllowMissing=false
+  index=node_check
+    indexer=github.com/hashicorp/go-memdb.CompoundIndex Indexes=[github.com/hashicorp/go-memdb.StringFieldIndex Field=Node Lowercase=true, github.com/hashicorp/consul/agent/consul/state.CheckIDIndex] AllowMissing=false
+  index=session
+    indexer=github.com/hashicorp/go-memdb.UUIDFieldIndex Field=Session
+
+table=sessions
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.UUIDFieldIndex Field=ID
+  index=node
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=Node Lowercase=true
+
+table=system-metadata
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=Key Lowercase=true
+
+table=tombstones
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=Key Lowercase=false
+
+table=usage
+  index=id unique
+    indexer=github.com/hashicorp/go-memdb.StringFieldIndex Field=ID Lowercase=true
+

internal/testing/golden/golden.go

@@ -0,0 +1,36 @@
+package golden
+
+import (
+	"flag"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+// update allows golden files to be updated based on the current output.
+var update = flag.Bool("update", false, "update golden files")
+
+// Get reads the expected value from the file at filename and returns the value.
+// filename is relative to the ./testdata directory.
+//
+// If the `-update` flag is used with `go test`, the golden file will be updated
+// to the value of actual.
+func Get(t *testing.T, actual, filename string) string {
+	t.Helper()
+
+	path := filepath.Join("testdata", filename)
+	if *update {
+		if dir := filepath.Dir(path); dir != "." {
+			require.NoError(t, os.MkdirAll(dir, 0755))
+		}
+		err := ioutil.WriteFile(path, []byte(actual), 0644)
+		require.NoError(t, err)
+	}
+
+	expected, err := ioutil.ReadFile(path)
+	require.NoError(t, err)
+	return string(expected)
+}