Merge branch 'master' of github.com:dosco/super-graph

.gitignore

@@ -38,4 +38,5 @@ release
 .gofuzz
 *-fuzz.zip
 *.test
+.firebase
 

README.md

@@ -7,7 +7,7 @@
 ![Docker build](https://img.shields.io/docker/cloud/build/dosco/super-graph.svg?style=flat-square)
 [![Discord Chat](https://img.shields.io/discord/628796009539043348.svg)](https://discord.gg/6pSWCTZ)
 
-Super Graph gives you a high performance GraphQL API without you having to write any code. GraphQL is automatically compiled efficient an SQL query. Use it either as a library or a standalone service.
+Super Graph gives you a high performance GraphQL API without you having to write any code. GraphQL is automagically compiled into an efficient SQL query. Use it either as a library or a standalone service.
 
 ## Using it as a service
 
@@ -91,6 +91,7 @@ This compiler is what sits at the heart of Super Graph, with layers of useful fu
 - Database migrations tool
 - Database seeding tool
 - Works with Postgres and YugabyteDB
+- OpenCensus Support: Zipkin, Prometheus, X-Ray, Stackdriver
 
 ## Documentation
 

config/dev.yml

@@ -68,6 +68,18 @@ cors_debug: true
 #   person: people
 #   sheep: sheep
 
+# open opencensus tracing and metrics
+# telemetry:
+#   debug: true
+#   metrics:
+#     exporter: "prometheus"
+#   tracing:
+#     exporter: "zipkin"
+#     endpoint: "http://zipkin:9411/api/v2/spans"
+#     sample: 0.2
+#     include_query: false
+#     include_params: false
+
 auth:
   # Can be 'rails' or 'jwt'
   type: rails
@@ -91,7 +103,6 @@ auth:
     # password: ""
     # max_idle: 80
     # max_active: 12000
-
     # In most cases you don't need these
     # salt: "encrypted cookie"
     # sign_salt: "signed encrypted cookie"
@@ -165,7 +176,6 @@ tables:
       - name: email
         related_to: products.name
 
-
 roles_query: "SELECT * FROM users WHERE id = $user_id"
 
 roles:

config/prod.yml

@@ -65,3 +65,12 @@ database:
 
   # database ping timeout is used for db health checking
   ping_timeout: 5m
+# open opencensus tracing and metrics
+# telemetry:
+#   debug: false
+#   metrics:
+#     exporter: "prometheus"
+#   tracing:
+#     exporter: "zipkin"
+#     endpoint: "http://zipkin:9411/api/v2/spans"
+#     sample: 0.6

core/api.go

@@ -210,3 +210,15 @@ func (sg *SuperGraph) GraphQL(c context.Context, query string, vars json.RawMess
 func (sg *SuperGraph) GraphQLSchema() (string, error) {
 	return sg.ge.Schema.String(), nil
 }
+
+// Operation function return the operation type from the query. It uses a very fast algorithm to
+// extract the operation without having to parse the query.
+func Operation(query string) OpType {
+	return OpType(qcode.GetQType(query))
+}
+
+// Name function return the operation name from the query. It uses a very fast algorithm to
+// extract the operation name without having to parse the query.
+func Name(query string) string {
+	return allow.QueryName(query)
+}

core/api_test.go

@@ -19,7 +19,7 @@ func BenchmarkGraphQL(b *testing.B) {
 	defer db.Close()
 
 	// mock.ExpectQuery(`^SELECT jsonb_build_object`).WithArgs()
-	c := &Config{DefaultBlock: true}
+	c := &Config{}
 	sg, err := newSuperGraph(c, db, psql.GetTestDBInfo())
 	if err != nil {
 		b.Fatal(err)

core/args.go

@@ -41,6 +41,10 @@ func (c *scontext) argMap() func(w io.Writer, tag string) (int, error) {
 		}
 		v := fields[0].Value
 
+		if isJsonScalarArray(v) {
+			return w.Write(jsonListToValues(v))
+		}
+
 		// Open and close quotes
 		if len(v) >= 2 && v[0] == '"' && v[len(v)-1] == '"' {
 			fields[0].Value = v[1 : len(v)-1]
@@ -118,13 +122,17 @@ func (c *scontext) argList(args [][]byte) ([]interface{}, error) {
 			if v, ok := fields[string(av)]; ok {
 				switch v[0] {
 				case '[', '{':
+					if isJsonScalarArray(v) {
+						vars[i] = jsonListToValues(v)
+					} else {
 						vars[i] = v
+					}
+
 				default:
 					var val interface{}
 					if err := json.Unmarshal(v, &val); err != nil {
 						return nil, err
 					}
-
 					vars[i] = val
 				}
 
@@ -163,6 +171,38 @@ func escSQuote(b []byte) []byte {
 	return buf.Bytes()
 }
 
+func isJsonScalarArray(b []byte) bool {
+	if b[0] != '[' || b[len(b)-1] != ']' {
+		return false
+	}
+	for i := range b {
+		switch b[i] {
+		case '{':
+			return false
+		case '[', ' ', '\t', '\n':
+			continue
+		default:
+			return true
+		}
+	}
+	return true
+}
+
+func jsonListToValues(b []byte) []byte {
+	s := 0
+	for i := 1; i < len(b)-1; i++ {
+		if b[i] == '"' && s%2 == 0 {
+			b[i] = '\''
+		}
+		if b[i] == '\\' {
+			s++
+		} else {
+			s = 0
+		}
+	}
+	return b[1 : len(b)-1]
+}
+
 func argErr(name string) error {
 	return fmt.Errorf("query requires variable '%s' to be set", name)
 }

core/config.go

@@ -30,11 +30,12 @@ type Config struct {
 	// or other database functions
 	SetUserID bool `mapstructure:"set_user_id"`
 
-	// DefaultBlock ensures only tables configured under the `anon` role
-	// config can be queries if the `anon` role. For example if the table
-	// `users` is not listed under the anon role then it will be filtered
-	// out of any unauthenticated queries that mention it.
-	DefaultBlock bool `mapstructure:"default_block"`
+	// DefaultAllow reverses the blocked by default behaviour for queries in
+	// anonymous mode. (anon role)
+	// For example if the table `users` is not listed under the anon role then
+	// access to it would by default for unauthenticated queries this reverses
+	// this behavior (!!! Use with caution !!!!)
+	DefaultAllow bool `mapstructure:"default_allow"`
 
 	// Vars is a map of hardcoded variables that can be leveraged in your
 	// queries (eg variable admin_id will be $admin_id in the query)
@@ -61,6 +62,9 @@ type Config struct {
 	// Inflections is to add additionally singular to plural mappings
 	// to the engine (eg. sheep: sheep)
 	Inflections map[string]string `mapstructure:"inflections"`
+
+	// Database schema name. Defaults to 'public'
+	DBSchema string `mapstructure:"db_schema"`
 }
 
 // Table struct defines a database table
@@ -104,6 +108,7 @@ type Role struct {
 // RoleTable struct contains role specific access control values for a database table
 type RoleTable struct {
 	Name     string
+	ReadOnly *bool `mapstructure:"read_only"`
 
 	Query  Query
 	Insert Insert
@@ -117,7 +122,7 @@ type Query struct {
 	Filters          []string
 	Columns          []string
 	DisableFunctions bool `mapstructure:"disable_functions"`
-	Block            bool
+	Block            *bool
 }
 
 // Insert struct contains access control values for insert operations
@@ -125,7 +130,7 @@ type Insert struct {
 	Filters []string
 	Columns []string
 	Presets map[string]string
-	Block   bool
+	Block   *bool
 }
 
 // Insert struct contains access control values for update operations
@@ -133,14 +138,14 @@ type Update struct {
 	Filters []string
 	Columns []string
 	Presets map[string]string
-	Block   bool
+	Block   *bool
 }
 
 // Delete struct contains access control values for delete operations
 type Delete struct {
 	Filters []string
 	Columns []string
-	Block   bool
+	Block   *bool
 }
 
 // ReadInConfig function reads in the config file for the environment specified in the GO_ENV

core/core.go

@@ -14,8 +14,10 @@ import (
 	"github.com/valyala/fasttemplate"
 )
 
+type OpType int
+
 const (
-	OpQuery int = iota
+	OpQuery OpType = iota
 	OpMutation
 )
 
@@ -56,16 +58,27 @@ type scontext struct {
 
 func (sg *SuperGraph) initCompilers() error {
 	var err error
+	var schema string
+
+	if sg.conf.DBSchema == "" {
+		schema = "public"
+	} else {
+		schema = sg.conf.DBSchema
+	}
 
 	// If sg.di is not null then it's probably set
 	// for tests
 	if sg.dbinfo == nil {
-		sg.dbinfo, err = psql.GetDBInfo(sg.db)
+		sg.dbinfo, err = psql.GetDBInfo(sg.db, schema)
 		if err != nil {
 			return err
 		}
 	}
 
+	if len(sg.dbinfo.Tables) == 0 {
+		return fmt.Errorf("no tables found in database (schema: %s)", schema)
+	}
+
 	if err = addTables(sg.conf, sg.dbinfo); err != nil {
 		return err
 	}
@@ -80,7 +93,6 @@ func (sg *SuperGraph) initCompilers() error {
 	}
 
 	sg.qc, err = qcode.NewCompiler(qcode.Config{
-		DefaultBlock: sg.conf.DefaultBlock,
 		Blocklist: sg.conf.Blocklist,
 	})
 	if err != nil {
@@ -263,9 +275,9 @@ func (c *scontext) resolveSQL() ([]byte, *stmt, error) {
 	// defaultRole := c.role
 
 	if useTx {
-		row = tx.QueryRow(finalSQL)
+		row = tx.QueryRowContext(c, finalSQL)
 	} else {
-		row = c.sg.db.QueryRow(finalSQL)
+		row = c.sg.db.QueryRowContext(c, finalSQL)
 	}
 
 	if len(stmts) > 1 {
@@ -334,7 +346,7 @@ func (c *scontext) executeRoleQuery(tx *sql.Tx) (string, error) {
 	return role, nil
 }
 
-func (r *Result) Operation() int {
+func (r *Result) Operation() OpType {
 	switch r.op {
 	case qcode.QTQuery:
 		return OpQuery

core/init.go

@@ -70,8 +70,8 @@ func (sg *SuperGraph) initConfig() error {
 		sg.roles["user"] = &ur
 	}
 
-	// If anon role is not defined and DefaultBlock is not then then create it
-	if _, ok := sg.roles["anon"]; !ok && !c.DefaultBlock {
+	// If anon role is not defined then create it
+	if _, ok := sg.roles["anon"]; !ok {
 		ur := Role{
 			Name: "anon",
 			tm:   make(map[string]*RoleTable),
@@ -83,14 +83,14 @@ func (sg *SuperGraph) initConfig() error {
 	// Roles: validate and sanitize
 	c.RolesQuery = sanitizeVars(c.RolesQuery)
 
-	if len(c.RolesQuery) == 0 {
+	if c.RolesQuery == "" {
 		sg.log.Printf("WRN roles_query not defined: attribute based access control disabled")
 	}
 
 	_, userExists := sg.roles["user"]
 	_, sg.anonExists = sg.roles["anon"]
 
-	sg.abacEnabled = userExists && len(c.RolesQuery) != 0
+	sg.abacEnabled = userExists && c.RolesQuery != ""
 
 	return nil
 }
@@ -112,7 +112,7 @@ func getDBTableAliases(c *Config) map[string][]string {
 
 func addTables(c *Config, di *psql.DBInfo) error {
 	for _, t := range c.Tables {
-		if len(t.Table) == 0 || len(t.Columns) == 0 {
+		if t.Table == "" || len(t.Columns) == 0 {
 			continue
 		}
 		if err := addTable(di, t.Columns, t); err != nil {
@@ -163,7 +163,7 @@ func addTable(di *psql.DBInfo, cols []Column, t Table) error {
 func addForeignKeys(c *Config, di *psql.DBInfo) error {
 	for _, t := range c.Tables {
 		for _, c := range t.Columns {
-			if len(c.ForeignKey) == 0 {
+			if c.ForeignKey == "" {
 				continue
 			}
 			if err := addForeignKey(di, c, t); err != nil {
@@ -206,7 +206,7 @@ func addForeignKey(di *psql.DBInfo, c Column, t Table) error {
 func addRoles(c *Config, qc *qcode.Compiler) error {
 	for _, r := range c.Roles {
 		for _, t := range r.Tables {
-			if err := addRole(qc, r, t); err != nil {
+			if err := addRole(qc, r, t, c.DefaultAllow); err != nil {
 				return err
 			}
 		}
@@ -215,54 +215,74 @@ func addRoles(c *Config, qc *qcode.Compiler) error {
 	return nil
 }
 
-func addRole(qc *qcode.Compiler, r Role, t RoleTable) error {
-	blockFilter := []string{"false"}
+func addRole(qc *qcode.Compiler, r Role, t RoleTable, defaultAllow bool) error {
+	ro := true // read-only
+
+	if defaultAllow {
+		ro = false
+	}
+
+	if r.Name != "anon" {
+		ro = false
+	}
+
+	if t.ReadOnly != nil {
+		ro = *t.ReadOnly
+	}
+
+	blocked := struct {
+		query  bool
+		insert bool
+		update bool
+		delete bool
+	}{false, ro, ro, ro}
+
+	if t.Query.Block != nil {
+		blocked.query = *t.Query.Block
+	}
+	if t.Insert.Block != nil {
+		blocked.insert = *t.Insert.Block
+	}
+	if t.Update.Block != nil {
+		blocked.update = *t.Update.Block
+	}
+	if t.Delete.Block != nil {
+		blocked.delete = *t.Delete.Block
+	}
 
 	query := qcode.QueryConfig{
 		Limit:            t.Query.Limit,
 		Filters:          t.Query.Filters,
 		Columns:          t.Query.Columns,
 		DisableFunctions: t.Query.DisableFunctions,
-	}
-
-	if t.Query.Block {
-		query.Filters = blockFilter
+		Block:            blocked.query,
 	}
 
 	insert := qcode.InsertConfig{
 		Filters: t.Insert.Filters,
 		Columns: t.Insert.Columns,
 		Presets: t.Insert.Presets,
-	}
-
-	if t.Insert.Block {
-		insert.Filters = blockFilter
+		Block:   blocked.insert,
 	}
 
 	update := qcode.UpdateConfig{
 		Filters: t.Update.Filters,
 		Columns: t.Update.Columns,
 		Presets: t.Update.Presets,
+		Block:   blocked.update,
 	}
 
-	if t.Update.Block {
-		update.Filters = blockFilter
-	}
-
-	delete := qcode.DeleteConfig{
+	del := qcode.DeleteConfig{
 		Filters: t.Delete.Filters,
 		Columns: t.Delete.Columns,
-	}
-
-	if t.Delete.Block {
-		delete.Filters = blockFilter
+		Block:   blocked.delete,
 	}
 
 	return qc.AddRole(r.Name, t.Name, qcode.TRConfig{
 		Query:  query,
 		Insert: insert,
 		Update: update,
-		Delete: delete,
+		Delete: del,
 	})
 }
 

core/internal/allow/allow.go

@@ -10,6 +10,7 @@ import (
 	"sort"
 	"strings"
 
+	"github.com/chirino/graphql/schema"
 	"github.com/dosco/super-graph/jsn"
 )
 
@@ -39,7 +40,7 @@ type Config struct {
 func New(filename string, conf Config) (*List, error) {
 	al := List{}
 
-	if len(filename) != 0 {
+	if filename != "" {
 		fp := filename
 
 		if _, err := os.Stat(fp); err == nil {
@@ -49,7 +50,7 @@ func New(filename string, conf Config) (*List, error) {
 		}
 	}
 
-	if len(al.filepath) == 0 {
+	if al.filepath == "" {
 		fp := "./allow.list"
 
 		if _, err := os.Stat(fp); err == nil {
@@ -59,7 +60,7 @@ func New(filename string, conf Config) (*List, error) {
 		}
 	}
 
-	if len(al.filepath) == 0 {
+	if al.filepath == "" {
 		fp := "./config/allow.list"
 
 		if _, err := os.Stat(fp); err == nil {
@@ -69,12 +70,12 @@ func New(filename string, conf Config) (*List, error) {
 		}
 	}
 
-	if len(al.filepath) == 0 {
+	if al.filepath == "" {
 		if !conf.CreateIfNotExists {
 			return nil, errors.New("allow.list not found")
 		}
 
-		if len(filename) == 0 {
+		if filename == "" {
 			al.filepath = "./config/allow.list"
 		} else {
 			al.filepath = filename
@@ -111,7 +112,7 @@ func (al *List) Set(vars []byte, query, comment string) error {
 		return errors.New("allow.list is read-only")
 	}
 
-	if len(query) == 0 {
+	if query == "" {
 		return errors.New("empty query")
 	}
 
@@ -140,6 +141,7 @@ func (al *List) Set(vars []byte, query, comment string) error {
 
 func (al *List) Load() ([]Item, error) {
 	var list []Item
+	varString := "variables"
 
 	b, err := ioutil.ReadFile(al.filepath)
 	if err != nil {
@@ -180,9 +182,9 @@ func (al *List) Load() ([]Item, error) {
 				s = e
 			}
 			ty = AL_QUERY
-		} else if matchPrefix(b, e, "variables") {
+		} else if matchPrefix(b, e, varString) {
 			if c == 0 {
-				s = e + len("variables") + 1
+				s = e + len(varString) + 1
 			}
 			ty = AL_VARS
 		} else if b[e] == '{' {
@@ -234,10 +236,20 @@ func (al *List) Load() ([]Item, error) {
 func (al *List) save(item Item) error {
 	var buf bytes.Buffer
 
-	item.Name = QueryName(item.Query)
+	qd := &schema.QueryDocument{}
+
+	if err := qd.Parse(item.Query); err != nil {
+		return err
+	}
+
+	qd.WriteTo(&buf)
+	query := buf.String()
+	buf.Reset()
+
+	item.Name = QueryName(query)
 	item.key = strings.ToLower(item.Name)
 
-	if len(item.Name) == 0 {
+	if item.Name == "" {
 		return nil
 	}
 
@@ -256,7 +268,7 @@ func (al *List) save(item Item) error {
 	}
 
 	if index != -1 {
-		if len(list[index].Comment) != 0 {
+		if list[index].Comment != "" {
 			item.Comment = list[index].Comment
 		}
 		list[index] = item
@@ -280,7 +292,7 @@ func (al *List) save(item Item) error {
 
 		i := 0
 		for _, c := range cmtLines {
-			if c = strings.TrimSpace(c); len(c) == 0 {
+			if c = strings.TrimSpace(c); c == "" {
 				continue
 			}
 

core/internal/integration_tests/cockroachdb/cockroachdb_test.go

@@ -17,7 +17,6 @@ import (
 )
 
 func TestCockroachDB(t *testing.T) {
-
 	dir, err := ioutil.TempDir("", "temp-cockraochdb-")
 	if err != nil {
 		log.Fatal(err)
@@ -33,6 +32,7 @@ func TestCockroachDB(t *testing.T) {
 	err = cmd.Start()
 	if err != nil {
 		t.Skip("is CockroachDB installed?: " + err.Error())
+		return
 	}
 	fmt.Println("started temporary cockroach db")
 

core/internal/integration_tests/integration_tests.go

@@ -50,18 +50,20 @@ func DropSchema(t *testing.T, db *sql.DB) {
 }
 
 func TestSuperGraph(t *testing.T, db *sql.DB, before func(t *testing.T)) {
-	config := core.Config{DefaultBlock: true}
+	config := core.Config{}
 	config.UseAllowList = false
 	config.AllowListFile = "./allow.list"
 	config.RolesQuery = `SELECT * FROM users WHERE id = $user_id`
 
+	blockFalse := false
+
 	config.Roles = []core.Role{
 		core.Role{
 			Name: "anon",
 			Tables: []core.RoleTable{
-				core.RoleTable{Name: "users", Query: core.Query{Limit: 100}},
-				core.RoleTable{Name: "product", Query: core.Query{Limit: 100}},
-				core.RoleTable{Name: "line_item", Query: core.Query{Limit: 100}},
+				core.RoleTable{Name: "users", ReadOnly: &blockFalse, Query: core.Query{Limit: 100}},
+				core.RoleTable{Name: "product", ReadOnly: &blockFalse, Query: core.Query{Limit: 100}},
+				core.RoleTable{Name: "line_item", ReadOnly: &blockFalse, Query: core.Query{Limit: 100}},
 			},
 		},
 	}

core/internal/integration_tests/postgresql/postgresql_test.go

@@ -15,8 +15,7 @@ func TestCockroachDB(t *testing.T) {
 	url, found := os.LookupEnv("SG_POSTGRESQL_TEST_URL")
 	if !found {
 		t.Skip("set the SG_POSTGRESQL_TEST_URL env variable if you want to run integration tests against a PostgreSQL database")
-	}
-
+	} else {
 		db, err := sql.Open("pgx", url)
 		require.NoError(t, err)
 
@@ -25,3 +24,4 @@ func TestCockroachDB(t *testing.T) {
 		integration_tests.TestSuperGraph(t, db, func(t *testing.T) {
 		})
 	}
+}

core/internal/psql/query.go

@@ -17,10 +17,6 @@ const (
 	closeBlock = 500
 )
 
-var (
-	ErrAllTablesSkipped = errors.New("all tables skipped. cannot render query")
-)
-
 type Variables map[string]json.RawMessage
 
 type Config struct {
@@ -92,30 +88,35 @@ func (co *Compiler) compileQuery(qc *qcode.QCode, w io.Writer, vars Variables) (
 
 	io.WriteString(c.w, `SELECT jsonb_build_object(`)
 	for _, id := range qc.Roots {
-		root := &qc.Selects[id]
-		if root.SkipRender || len(root.Cols) == 0 {
-			continue
-		}
-
-		st.Push(root.ID + closeBlock)
-		st.Push(root.ID)
-
 		if i != 0 {
 			io.WriteString(c.w, `, `)
 		}
 
+		root := &qc.Selects[id]
+
+		if root.SkipRender || len(root.Cols) == 0 {
+			squoted(c.w, root.FieldName)
+			io.WriteString(c.w, `, `)
+			io.WriteString(c.w, `NULL`)
+
+		} else {
+			st.Push(root.ID + closeBlock)
+			st.Push(root.ID)
 			c.renderRootSelect(root)
+		}
+
 		i++
 	}
 
-	io.WriteString(c.w, `) as "__root" FROM `)
-
-	if i == 0 {
-		return 0, ErrAllTablesSkipped
-	}
-
 	var ignored uint32
 
+	if st.Len() != 0 {
+		io.WriteString(c.w, `) as "__root" FROM `)
+	} else {
+		io.WriteString(c.w, `) as "__root"`)
+		return ignored, nil
+	}
+
 	for {
 		if st.Len() == 0 {
 			break
@@ -1026,9 +1027,9 @@ func (c *compilerContext) renderOp(ex *qcode.Exp, ti *DBTableInfo) error {
 	case qcode.OpLesserThan:
 		io.WriteString(c.w, `<`)
 	case qcode.OpIn:
-		io.WriteString(c.w, `IN`)
+		io.WriteString(c.w, `= ANY`)
 	case qcode.OpNotIn:
-		io.WriteString(c.w, `NOT IN`)
+		io.WriteString(c.w, `!= ANY`)
 	case qcode.OpLike:
 		io.WriteString(c.w, `LIKE`)
 	case qcode.OpNotLike:
@@ -1174,6 +1175,16 @@ func (c *compilerContext) renderVal(ex *qcode.Exp, vars map[string]string, col *
 			io.WriteString(c.w, `)`)
 		case ok:
 			squoted(c.w, val)
+		case ex.Op == qcode.OpIn || ex.Op == qcode.OpNotIn:
+			io.WriteString(c.w, ` (string_to_array('{{`)
+			io.WriteString(c.w, ex.Val)
+			io.WriteString(c.w, `}}', ',')`)
+
+			io.WriteString(c.w, ` :: `)
+			io.WriteString(c.w, col.Type)
+			io.WriteString(c.w, `[])`)
+			return
+
 		default:
 			io.WriteString(c.w, ` '{{`)
 			io.WriteString(c.w, ex.Val)

core/internal/psql/tables.go

@@ -17,7 +17,7 @@ type DBInfo struct {
 	colMap    map[string]map[string]*DBColumn
 }
 
-func GetDBInfo(db *sql.DB) (*DBInfo, error) {
+func GetDBInfo(db *sql.DB, schema string) (*DBInfo, error) {
 	di := &DBInfo{}
 	var version string
 
@@ -31,13 +31,13 @@ func GetDBInfo(db *sql.DB) (*DBInfo, error) {
 		return nil, err
 	}
 
-	di.Tables, err = GetTables(db)
+	di.Tables, err = GetTables(db, schema)
 	if err != nil {
 		return nil, err
 	}
 
 	for _, t := range di.Tables {
-		cols, err := GetColumns(db, "public", t.Name)
+		cols, err := GetColumns(db, schema, t.Name)
 		if err != nil {
 			return nil, err
 		}
@@ -47,7 +47,7 @@ func GetDBInfo(db *sql.DB) (*DBInfo, error) {
 
 	di.colMap = newColMap(di.Tables, di.Columns)
 
-	di.Functions, err = GetFunctions(db)
+	di.Functions, err = GetFunctions(db, schema)
 	if err != nil {
 		return nil, err
 	}
@@ -96,7 +96,7 @@ type DBTable struct {
 	Type string
 }
 
-func GetTables(db *sql.DB) ([]DBTable, error) {
+func GetTables(db *sql.DB, schema string) ([]DBTable, error) {
 	sqlStmt := `
 SELECT
 	c.relname as "name",
@@ -108,14 +108,12 @@ SELECT
 FROM pg_catalog.pg_class c
 	LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
 WHERE c.relkind IN ('r','v','m','f','')
-	AND n.nspname <> ('pg_catalog')
-	AND n.nspname <> ('information_schema')
-	AND n.nspname !~ ('^pg_toast')
+	AND n.nspname = $1
 	AND pg_catalog.pg_table_is_visible(c.oid);`
 
 	var tables []DBTable
 
-	rows, err := db.Query(sqlStmt)
+	rows, err := db.Query(sqlStmt, schema)
 	if err != nil {
 		return nil, fmt.Errorf("Error fetching tables: %s", err)
 	}
@@ -264,7 +262,7 @@ type DBFuncParam struct {
 	Type string
 }
 
-func GetFunctions(db *sql.DB) ([]DBFunction, error) {
+func GetFunctions(db *sql.DB, schema string) ([]DBFunction, error) {
 	sqlStmt := `
 SELECT 
 	routines.routine_name, 
@@ -278,11 +276,11 @@ RIGHT JOIN
 	information_schema.parameters 
 	ON (routines.specific_name = parameters.specific_name and parameters.ordinal_position IS NOT NULL)	
 WHERE 
-	routines.specific_schema = 'public'
+	routines.specific_schema = $1
 ORDER BY 
 	routines.routine_name, parameters.ordinal_position;`
 
-	rows, err := db.Query(sqlStmt)
+	rows, err := db.Query(sqlStmt, schema)
 	if err != nil {
 		return nil, fmt.Errorf("Error fetching functions: %s", err)
 	}

core/internal/qcode/config.go

@@ -8,7 +8,6 @@ import (
 
 type Config struct {
 	Blocklist []string
-	DefaultBlock bool
 }
 
 type QueryConfig struct {
@@ -16,23 +15,27 @@ type QueryConfig struct {
 	Filters          []string
 	Columns          []string
 	DisableFunctions bool
+	Block            bool
 }
 
 type InsertConfig struct {
 	Filters []string
 	Columns []string
 	Presets map[string]string
+	Block   bool
 }
 
 type UpdateConfig struct {
 	Filters []string
 	Columns []string
 	Presets map[string]string
+	Block   bool
 }
 
 type DeleteConfig struct {
 	Filters []string
 	Columns []string
+	Block   bool
 }
 
 type TRConfig struct {
@@ -43,14 +46,14 @@ type TRConfig struct {
 }
 
 type trval struct {
+	readOnly bool
 	query    struct {
 		limit   string
 		fil     *Exp
 		filNU   bool
 		cols    map[string]struct{}
-		disable struct {
-			funcs bool
-		}
+		disable struct{ funcs bool }
+		block   bool
 	}
 
 	insert struct {
@@ -59,6 +62,7 @@ type trval struct {
 		cols   map[string]struct{}
 		psmap  map[string]string
 		pslist []string
+		block  bool
 	}
 
 	update struct {
@@ -67,12 +71,14 @@ type trval struct {
 		cols   map[string]struct{}
 		psmap  map[string]string
 		pslist []string
+		block  bool
 	}
 
 	delete struct {
 		fil   *Exp
 		filNU bool
 		cols  map[string]struct{}
+		block bool
 	}
 }
 

core/internal/qcode/qcode.go

@@ -180,7 +180,7 @@ var expPool = sync.Pool{
 }
 
 func NewCompiler(c Config) (*Compiler, error) {
-	co := &Compiler{db: c.DefaultBlock}
+	co := &Compiler{}
 	co.tr = make(map[string]map[string]*trval)
 	co.bl = make(map[string]struct{}, len(c.Blocklist))
 
@@ -219,6 +219,7 @@ func (com *Compiler) AddRole(role, table string, trc TRConfig) error {
 	}
 	trv.query.cols = listToMap(trc.Query.Columns)
 	trv.query.disable.funcs = trc.Query.DisableFunctions
+	trv.query.block = trc.Query.Block
 
 	// insert config
 	trv.insert.fil, trv.insert.filNU, err = compileFilter(trc.Insert.Filters)
@@ -228,6 +229,7 @@ func (com *Compiler) AddRole(role, table string, trc TRConfig) error {
 	trv.insert.cols = listToMap(trc.Insert.Columns)
 	trv.insert.psmap = parsePresets(trc.Insert.Presets)
 	trv.insert.pslist = mapToList(trv.insert.psmap)
+	trv.insert.block = trc.Insert.Block
 
 	// update config
 	trv.update.fil, trv.update.filNU, err = compileFilter(trc.Update.Filters)
@@ -237,6 +239,7 @@ func (com *Compiler) AddRole(role, table string, trc TRConfig) error {
 	trv.update.cols = listToMap(trc.Update.Columns)
 	trv.update.psmap = parsePresets(trc.Update.Presets)
 	trv.update.pslist = mapToList(trv.update.psmap)
+	trv.update.block = trc.Update.Block
 
 	// delete config
 	trv.delete.fil, trv.delete.filNU, err = compileFilter(trc.Delete.Filters)
@@ -244,6 +247,7 @@ func (com *Compiler) AddRole(role, table string, trc TRConfig) error {
 		return err
 	}
 	trv.delete.cols = listToMap(trc.Delete.Columns)
+	trv.delete.block = trc.Delete.Block
 
 	singular := flect.Singularize(table)
 	plural := flect.Pluralize(table)
@@ -329,17 +333,67 @@ func (com *Compiler) compileQuery(qc *QCode, op *Operation, role string) error {
 		}
 
 		trv := com.getRole(role, field.Name)
+		skipRender := false
+
+		if trv != nil {
+			switch action {
+			case QTQuery:
+				if trv.query.block {
+					skipRender = true
+				}
+
+			case QTInsert:
+				if trv.insert.block {
+					return fmt.Errorf("%s, insert blocked: %s", role, field.Name)
+				}
+
+			case QTUpdate:
+				if trv.update.block {
+					return fmt.Errorf("%s, update blocked: %s", role, field.Name)
+				}
+
+			case QTDelete:
+				if trv.delete.block {
+					return fmt.Errorf("%s, delete blocked: %s", role, field.Name)
+				}
+			}
+
+		} else if role == "anon" {
+			skipRender = true
+		}
 
 		selects = append(selects, Select{
 			ID:         id,
 			ParentID:   parentID,
 			Name:       field.Name,
-			Children:  make([]int32, 0, 5),
-			Allowed:   trv.allowedColumns(action),
-			Functions: true,
+			SkipRender: skipRender,
 		})
 		s := &selects[(len(selects) - 1)]
 
+		if len(field.Alias) != 0 {
+			s.FieldName = field.Alias
+		} else {
+			s.FieldName = s.Name
+		}
+
+		if s.ParentID == -1 {
+			qc.Roots = append(qc.Roots, s.ID)
+		} else {
+			p := &selects[s.ParentID]
+			p.Children = append(p.Children, s.ID)
+		}
+
+		if skipRender {
+			id++
+			continue
+		}
+
+		s.Children = make([]int32, 0, 5)
+		s.Functions = true
+
+		if trv != nil {
+			s.Allowed = trv.allowedColumns(action)
+
 			switch action {
 			case QTQuery:
 				s.Functions = !trv.query.disable.funcs
@@ -353,11 +407,6 @@ func (com *Compiler) compileQuery(qc *QCode, op *Operation, role string) error {
 				s.PresetMap = trv.update.psmap
 				s.PresetList = trv.update.pslist
 			}
-
-		if len(field.Alias) != 0 {
-			s.FieldName = field.Alias
-		} else {
-			s.FieldName = s.Name
 		}
 
 		err := com.compileArgs(qc, s, field.Args, role)
@@ -368,13 +417,6 @@ func (com *Compiler) compileQuery(qc *QCode, op *Operation, role string) error {
 		// Order is important AddFilters must come after compileArgs
 		com.AddFilters(qc, s, role)
 
-		if s.ParentID == -1 {
-			qc.Roots = append(qc.Roots, s.ID)
-		} else {
-			p := &selects[s.ParentID]
-			p.Children = append(p.Children, s.ID)
-		}
-
 		s.Cols = make([]Column, 0, len(field.Children))
 		action = QTQuery
 
@@ -414,14 +456,10 @@ func (com *Compiler) compileQuery(qc *QCode, op *Operation, role string) error {
 
 func (com *Compiler) AddFilters(qc *QCode, sel *Select, role string) {
 	var fil *Exp
-	var nu bool // user required (or not) in this filter
+	var nu bool // need user_id (or not) in this filter
 
 	if trv, ok := com.tr[role][sel.Name]; ok {
 		fil, nu = trv.filter(qc.Type)
-
-	} else if com.db && role == "anon" {
-		// Tables not defined under the anon role will not be rendered
-		sel.SkipRender = true
 	}
 
 	if fil == nil {
@@ -812,14 +850,17 @@ func (com *Compiler) compileArgAfterBefore(sel *Select, arg *Arg, pt PagingType)
 	return nil, false
 }
 
-var zeroTrv = &trval{}
+// var zeroTrv = &trval{}
 
 func (com *Compiler) getRole(role, field string) *trval {
 	if trv, ok := com.tr[role][field]; ok {
 		return trv
-	} else {
-		return zeroTrv
 	}
+
+	return nil
+	// } else {
+	// 	return zeroTrv
+	// }
 }
 
 func AddFilter(sel *Select, fil *Exp) {
@@ -946,6 +987,9 @@ func newExp(st *util.Stack, node *Node, usePool bool) (*Exp, error) {
 		ex.Op = OpDistinct
 		ex.Val = node.Val
 	default:
+		if len(node.Children) == 0 {
+			return nil, fmt.Errorf("[Where] invalid operation: %s", name)
+		}
 		pushChildren(st, node.exp, node)
 		return nil, nil // skip node
 	}
@@ -965,8 +1009,9 @@ func newExp(st *util.Stack, node *Node, usePool bool) (*Exp, error) {
 		case NodeVar:
 			ex.Type = ValVar
 		default:
-			return nil, fmt.Errorf("[Where] valid values include string, int, float, boolean and list: %s", node.Type)
+			return nil, fmt.Errorf("[Where] invalid values for: %s", name)
 		}
+
 		setWhereColName(ex, node)
 	}
 
@@ -985,10 +1030,15 @@ func setListVal(ex *Exp, node *Node) {
 		case NodeFloat:
 			ex.ListType = ValFloat
 		}
+	} else {
+		ex.Val = node.Val
+		return
 	}
+
 	for i := range node.Children {
 		ex.ListVal = append(ex.ListVal, node.Children[i].Val)
 	}
+
 }
 
 func setWhereColName(ex *Exp, node *Node) {
@@ -1015,6 +1065,7 @@ func setWhereColName(ex *Exp, node *Node) {
 		ex.Col = list[listlen-1]
 		ex.NestedCols = list[:listlen]
 	}
+
 }
 
 func setOrderByColName(ob *OrderBy, node *Node) {

core/prepare.go

@@ -11,7 +11,6 @@ import (
 	"strings"
 
 	"github.com/dosco/super-graph/core/internal/allow"
-	"github.com/dosco/super-graph/core/internal/psql"
 	"github.com/dosco/super-graph/core/internal/qcode"
 	"github.com/valyala/fasttemplate"
 )
@@ -103,9 +102,6 @@ func (sg *SuperGraph) prepareStmt(item allow.Item) error {
 			// logger.Debug().Msgf("Prepared statement 'query %s' (anon)", item.Name)
 
 			stmts2, err := sg.buildRoleStmt(qb, vars, "anon")
-			if err == psql.ErrAllTablesSkipped {
-				return nil
-			}
 			if err != nil {
 				return err
 			}
@@ -121,9 +117,6 @@ func (sg *SuperGraph) prepareStmt(item allow.Item) error {
 			// logger.Debug().Msgf("Prepared statement 'mutation %s' (%s)", item.Name, role.Name)
 
 			stmts, err := sg.buildRoleStmt(qb, vars, role.Name)
-			if err == psql.ErrAllTablesSkipped {
-				continue
-			}
 			if err != nil {
 				return err
 			}
@@ -141,7 +134,7 @@ func (sg *SuperGraph) prepareStmt(item allow.Item) error {
 func (sg *SuperGraph) prepare(ct context.Context, st []stmt, key string) error {
 	finalSQL, am := processTemplate(st[0].sql)
 
-	sd, err := sg.db.Prepare(finalSQL)
+	sd, err := sg.db.PrepareContext(ct, finalSQL)
 	if err != nil {
 		return fmt.Errorf("prepare failed: %v: %s", err, finalSQL)
 	}

docs/website/.firebase/hosting.YnVpbGQ.cache

@@ -1,41 +0,0 @@
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-20ac7829.c04b4a1e.js,1589756749060,5b95f479848ccd6959630d4a24bd551d0dbc74457911e9b6f3498655bfaf8ea7
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docs/website/docs/home.md

@@ -1,21 +1,45 @@
 ---
 id: home
 title: Super Graph
+hide_title: true
 sidebar_label: Home
 ---
 
 import useBaseUrl from '@docusaurus/useBaseUrl'; // Add to the top of the file below the front matter.
 
-<img alt="Super Graph Logo" src={useBaseUrl('img/super-graph-logo.svg')} height="60" />;
+<div class="hero shadow--lw margin-bottom--lg">
+  <div class="container">
+    <div class="row">
+      <div class="col col--2">  
+        <img 
+          class="avatar__photo avatar__photo--xl"
+          alt="Super Graph Logo" 
+          src={useBaseUrl('img/super-graph-logo.svg')} 
+          height="70" 
+        />
+      </div>
+      <div class="col col--10"><h1 class="hero__title">Super Graph</h1></div>
+    </div>
+    <p class="hero__subtitle">Fetch data without code!</p>
+    <div class="margin-bottom--lg">
+      <a class="button button--secondary button--outline button--lg" href="start">
+        Skip Intro
+      </a>
+    </div>
+    <p>Stop fighting ORM's and complex SQL just to fetch the data you need. Instead try Super Graph it automagically tranforms GraphQL into efficient SQL.</p>
+  </div>
+</div>
 
-## Fetch data without code!
-
-### Stop strugging with ORM's and complex SQL just to fetch the data you need. Instead try asking nicely with GraphQL.
-
-:::info
+:::info cut development time
 80% of all web app development is either reading from or writing to a database. 100x your developer productivity and save valuable time by making that super simple.
 :::
 
+### Fetching data with GraphQL
+
+Just imagine the code or SQL you'll need to fetch this data, the user, all his posts, all the votes on the posts, the authors information and the related tags. Oh yeah and you also need efficient cursor based pagination. And Remember you also need to maintain this code forever.
+
+Instead just describe the data you need in GraphQL and give that to Super Graph it'll automatically learn your database and generate the most efficient SQL query fetching your data in the JSON structure you expected.
+
 ```graphql
 query {
   user(id: 5) {
@@ -45,7 +69,10 @@ query {
 }
 ```
 
-### Super Graph automatially compiles your GraphQL into an efficient SQL query giving you the results you wanted.
+### Instant results
+
+Here's the data Super Graph fetched using the GraphQL above, it's even in the JSON structure you
+wanted it in. All this without you writing any code or SQL.
 
 ```json
 {
@@ -77,6 +104,8 @@ query {
           "created_at": "2020-05-13T13:51:21.729501+00:00"
         },
         ...
+      ],
+      "posts_cursor": "a8d4j2k9d83dy373hd2nskw2sjs8"
   }
 }
 ```

docs/website/docs/start.md

@@ -10,7 +10,7 @@ You can then add your database schema to the migrations, maybe create some seed
 
 ```bash
 # Download and install Super Graph. You will need Go 1.14 or above
-go get https://github.com/dosco/super-graph
+go get github.com/dosco/super-graph
 ```
 
 And then create and launch your new app

docs/website/docs/telemetry.md

@@ -0,0 +1,82 @@
+---
+id: telemetry
+title: Tracing and Metrics
+sidebar_label: Telemetry
+---
+
+import useBaseUrl from '@docusaurus/useBaseUrl'; // Add to the top of the file below the front matter.
+
+Having observability and telemetry is at the core of any production ready service. Super Graph has built-in support for OpenCensus for tracing requests all the way from HTTP to the database and providing all kinds of metrics.
+
+OpenCensus has a concept called exporters these are external services that can consume this data and make to give you graphs, charts, alerting etc. Super Graph again has built-in support for Zipkin, Prometheus, Google Stackdriver and the AWS X-Ray exporters.
+
+## Telemetry config
+
+The `telemetry` section of the standard config files is where you set values to configure this feature to your needs.
+
+```yaml
+telemetry:
+  debug: true
+  interval: 5s
+  metrics:
+    exporter: "prometheus"
+    endpoint: ""
+    namespace: "web api"
+    key: "1234xyz"
+  tracing:
+    exporter: "zipkin"
+    endpoint: "http://zipkin:9411/api/v2/spans"
+    sample: 0.2
+    include_query: false
+    include_params: false
+```
+
+**debug**: Enabling debug enables an embedded web ui to test and debug tracing and metrics. This UI called `zPages` is provided by OpenCensus and will be made available on the `/telemetry` path. For more information on using `zPages` https://opencensus.io/zpages/. Remeber to disable this in production.
+
+**interval**: This controls the interval setting for OpenCensus metrics collection. This deafaults to `5 seconds` if not set.
+
+**metric.exporters** Setting this enables metrics collection. The supported values for this field are `prometheus` and `stackdriver`. The Prometheus exporter requires `metric.namespace` to be set. The Sackdriver exporter requires the `metric.key` to be set to the Google Cloud Project ID.
+
+**metric.endpoint** Is not currently used by any of the exporters.
+
+**tracing.exporter** Setting this enables request tracing. The supported values for this field are `zipkin`, `aws` and `xray`. Zipkin requires `tracing.endpoint` to be set. AWS and Xray are the same and do not require any addiitonal settings.
+
+**tracing.sample** This controls what percentage of the requests should be traced. By default `0.5` or 50% of the requests are traced, `always` is also a valid value for this field and it means all requests will be traced.
+
+**include_query** Include the Super Graph SQL query to the trace. Be careful with this setting in production it will add the entire SQL query to the trace. This can be veru useful to debug slow requests.
+
+**include_params** Include the Super Graph SQL query parameters to the trace. Be careful with this setting in production it will it can potentially leak sensitive user information into tracing logs.
+
+## Using Zipkin
+
+Zipkin is a really great open source request tracing project. It's easy to add to your current Super Graph app as a way to test tracing in development. Add the following to the Super Graph generated `docker-compose.yml` file. Also add `zipkin` in your current apps `depends_on` list. Once setup the Zipkin UI is available at http://localhost:9411
+
+```yaml
+  your_api:
+    ...
+    depends_on:
+      - db
+      - zipkin
+
+  zipkin:
+    image: openzipkin/zipkin-slim
+    container_name: zipkin
+    # Environment settings are defined here https://github.com/openzipkin/zipkin/blob/master/zipkin-server/README.md#environment-variables
+    environment:
+      - STORAGE_TYPE=mem
+      # Uncomment to enable self-tracing
+      # - SELF_TRACING_ENABLED=true
+      # Uncomment to enable debug logging
+      # - JAVA_OPTS=-Dorg.slf4j.simpleLogger.log.zipkin2=debug
+    ports:
+      # Port used for the Zipkin UI and HTTP Api
+      - 9411:9411
+```
+
+### Zipkin HTTP to DB traces
+
+<img alt="Zipkin Traces" src={useBaseUrl("img/zipkin1.png")} />
+
+### Zipkin trace details
+
+<img alt="Zipkin Traces" src={useBaseUrl('img/zipkin2.png')} />

docs/website/docusaurus.config.js

@@ -3,7 +3,7 @@ module.exports = {
   tagline: "Fetch data without code",
   url: "https://supergraph.dev",
   baseUrl: "/",
-  favicon: "img/favicon.svg",
+  favicon: "img/super-graph-logo.svg",
   organizationName: "dosco", // Usually your GitHub org/user name.
   projectName: "super-graph", // Usually your repo name.
   themeConfig: {
@@ -11,7 +11,7 @@ module.exports = {
       title: "Super Graph",
       logo: {
         alt: "Super Graph Logo",
-        src: "img/favicon.png",
+        src: "img/super-graph-logo.svg",
       },
       links: [
         {
@@ -56,13 +56,13 @@ module.exports = {
           sidebarPath: require.resolve("./sidebars.js"),
           // Please change this to your repo.
           editUrl:
-            "https://github.com/facebook/docusaurus/edit/master/website/",
+            "https://github.com/dosco/super-graph/edit/master/docs/website",
         },
         blog: {
           showReadingTime: true,
           // Please change this to your repo.
           editUrl:
-            "https://github.com/facebook/docusaurus/edit/master/website/blog/",
+            "https://github.com/dosco/super-graph/edit/master/docs/website",
         },
         theme: {
           customCss: require.resolve("./src/css/custom.css"),

docs/website/sidebars.js

@@ -9,6 +9,7 @@ module.exports = {
       "react",
       "advanced",
       "security",
+      "telemetry",
       "config",
       "deploy",
       "internals",

docs/website/static/img/super-graph-logo.svg

@@ -2,7 +2,7 @@
 <svg width="378px" height="314px" viewBox="0 0 378 314" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
     <title>battery-technology-svgrepo-com</title>
     <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
-        <g id="battery-technology-svgrepo-com" fill="#000000" fill-rule="nonzero">
+        <g id="battery-technology-svgrepo-com" fill="#444AA9" fill-rule="nonzero">
             <path d="M234,269.076 L210,269.076 C196.8,269.076 186,258.276 186,245.076 L186,69.076 C186,55.876 196.8,45.076 210,45.076 L370,45.076 C374.4,45.076 378,41.476 378,37.076 C378,32.676 374.4,29.076 370,29.076 L210,29.076 C188,29.076 170,47.076 170,69.076 L170,245.076 C170,267.076 188,285.076 210,285.076 L234,285.076 C238.4,285.076 242,281.476 242,277.076 C242,272.676 238.4,269.076 234,269.076 Z" id="Path" transform="translate(274.000000, 157.076000) scale(-1, -1) translate(-274.000000, -157.076000) "></path>
             <path d="M64,269.076 L40,269.076 C26.8,269.076 16,258.276 16,245.076 L16,69.076 C16,55.876 26.8,45.076 40,45.076 L200,45.076 C204.4,45.076 208,41.476 208,37.076 C208,32.676 204.4,29.076 200,29.076 L40,29.076 C18,29.076 0,47.076 0,69.076 L0,245.076 C0,267.076 18,285.076 40,285.076 L64,285.076 C68.4,285.076 72,281.476 72,277.076 C72,272.676 68.4,269.076 64,269.076 Z" id="Path"></path>
             <path d="M196,269.076 L184,269.076 C179.6,269.076 176,272.676 176,277.076 C176,281.476 179.6,285.076 184,285.076 L196,285.076 C200.4,285.076 204,281.476 204,277.076 C204,272.676 200.4,269.076 196,269.076 Z" id="Path"></path>

go.mod

@@ -1,6 +1,11 @@
 module github.com/dosco/super-graph
 
 require (
+	contrib.go.opencensus.io/exporter/aws v0.0.0-20190807220307-c50fb1bd7f21
+	contrib.go.opencensus.io/exporter/prometheus v0.1.0
+	contrib.go.opencensus.io/exporter/stackdriver v0.13.1
+	contrib.go.opencensus.io/exporter/zipkin v0.1.1
+	contrib.go.opencensus.io/integrations/ocsql v0.1.6
 	github.com/DATA-DOG/go-sqlmock v1.4.1
 	github.com/GeertJohan/go.rice v1.0.0
 	github.com/NYTimes/gziphandler v1.1.1
@@ -21,6 +26,7 @@ require (
 	github.com/jackc/pgtype v1.3.0
 	github.com/jackc/pgx/v4 v4.6.0
 	github.com/mitchellh/mapstructure v1.2.2 // indirect
+	github.com/openzipkin/zipkin-go v0.2.2
 	github.com/pelletier/go-toml v1.7.0 // indirect
 	github.com/pkg/errors v0.9.1
 	github.com/rs/cors v1.7.0
@@ -32,6 +38,7 @@ require (
 	github.com/spf13/viper v1.6.3
 	github.com/stretchr/testify v1.5.1
 	github.com/valyala/fasttemplate v1.1.0
+	go.opencensus.io v0.22.3
 	go.uber.org/zap v1.14.1
 	golang.org/x/crypto v0.0.0-20200414173820-0848c9571904
 	golang.org/x/sys v0.0.0-20200413165638-669c56c373c4 // indirect

go.sum

@@ -1,6 +1,25 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
+cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
+cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.45.1 h1:lRi0CHyU+ytlvylOlFKKq0af6JncuyoRh1J+QJBqQx0=
+cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
+cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
+cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
+contrib.go.opencensus.io/exporter/aws v0.0.0-20190807220307-c50fb1bd7f21 h1:H3O7Pfgex4O08w1PyXje7lhiRbPNd687lz48jfWWB1s=
+contrib.go.opencensus.io/exporter/aws v0.0.0-20190807220307-c50fb1bd7f21/go.mod h1:uu1P0UCM/6RbsMrgPa98ll8ZcHM858i/AD06a9aLRCA=
+contrib.go.opencensus.io/exporter/prometheus v0.1.0 h1:SByaIoWwNgMdPSgl5sMqM2KDE5H/ukPWBRo314xiDvg=
+contrib.go.opencensus.io/exporter/prometheus v0.1.0/go.mod h1:cGFniUXGZlKRjzOyuZJ6mgB+PgBcCIa79kEKR8YCW+A=
+contrib.go.opencensus.io/exporter/stackdriver v0.13.1 h1:RX9W6FelAqTVnBi/bRXJLXr9n18v4QkQwZYIdnNS51I=
+contrib.go.opencensus.io/exporter/stackdriver v0.13.1/go.mod h1:z2tyTZtPmQ2HvWH4cOmVDgtY+1lomfKdbLnkJvZdc8c=
+contrib.go.opencensus.io/exporter/zipkin v0.1.1 h1:PR+1zWqY8ceXs1qDQQIlgXe+sdiwCf0n32bH4+Epk8g=
+contrib.go.opencensus.io/exporter/zipkin v0.1.1/go.mod h1:GMvdSl3eJ2gapOaLKzTKE3qDgUkJ86k9k3yY2eqwkzc=
+contrib.go.opencensus.io/integrations/ocsql v0.1.6 h1:9qmZJBlnMtffShflmfhW4EZK7M+CujIDG4bEwUrg+ms=
+contrib.go.opencensus.io/integrations/ocsql v0.1.6/go.mod h1:8DsSdjz3F+APR+0z0WkU1aRorQCFfRxvqjUUPMbF3fE=
 github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/DATA-DOG/go-sqlmock v1.4.1 h1:ThlnYciV1iM/V0OSF/dtkqWb6xo5qITT1TJBG1MRDJM=
 github.com/DATA-DOG/go-sqlmock v1.4.1/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
 github.com/GeertJohan/go.incremental v1.0.0 h1:7AH+pY1XUgQE4Y1HcXYaMqAI0m9yrFqo/jt0CW30vsg=
@@ -10,6 +29,8 @@ github.com/GeertJohan/go.rice v1.0.0/go.mod h1:eH6gbSOAUv07dQuZVnBmoDP8mgsM1rtix
 github.com/NYTimes/gziphandler v1.1.1 h1:ZUDjpQae29j0ryrS0u/B8HZfJBtBQHjqw2rQ2cqUQ3I=
 github.com/NYTimes/gziphandler v1.1.1/go.mod h1:n/CVRwUEOgIxrgPvAQhUUr9oeUtvrhMomdKFjzJNB0c=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
+github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
+github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
 github.com/adjust/gorails v0.0.0-20171013043634-2786ed0c03d3 h1:+qz9Ga6l6lKw6fgvk5RMV5HQznSLvI8Zxajwdj4FhFg=
 github.com/adjust/gorails v0.0.0-20171013043634-2786ed0c03d3/go.mod h1:FlkD11RtgMTYjVuBnb7cxoHmQGqvPpCsr2atC88nl/M=
 github.com/akavel/rsrc v0.8.0 h1:zjWn7ukO9Kc5Q62DOJCcxGpXC18RawVtYAGdz2aLlfw=
@@ -17,12 +38,19 @@ github.com/akavel/rsrc v0.8.0/go.mod h1:uLoCtb9J+EyAqh+26kdrTgmzRBFPGOolLWKpdxkK
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
+github.com/aws/aws-sdk-go v1.15.27 h1:i75BxN4Es/8rTVQbEKAP1WCiIhhz635xTNeDdZJRAXQ=
+github.com/aws/aws-sdk-go v1.15.27/go.mod h1:mFuSZ37Z9YOHbQEwBWztmVzqXrEkub65tZoCYDt7FT0=
+github.com/aws/aws-sdk-go v1.23.20 h1:2CBuL21P0yKdZN5urf2NxKa1ha8fhnY+A3pBCHFeZoA=
+github.com/aws/aws-sdk-go v1.23.20/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
+github.com/beorn7/perks v1.0.0 h1:HWo1m869IqiPhD389kmkxeTalrjNbbJTC8LXupb+sl0=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/bradfitz/gomemcache v0.0.0-20190913173617-a41fca850d0b h1:L/QXpzIa3pOvUGt1D1lA5KjYhPBAN/3iWdP7xeFS9F0=
 github.com/bradfitz/gomemcache v0.0.0-20190913173617-a41fca850d0b/go.mod h1:H0wQNHz2YrLsuXOZozoeDmnHXkNCRmMW0gwFWDfEZDA=
 github.com/brianvoe/gofakeit/v5 v5.2.0 h1:De9X+2PQum9U2zCaIDxLV7wx0YBL6c7RN2sFBImzHGI=
 github.com/brianvoe/gofakeit/v5 v5.2.0/go.mod h1:/ZENnKqX+XrN8SORLe/fu5lZDIo1tuPncWuRD+eyhSI=
+github.com/census-instrumentation/opencensus-proto v0.2.1 h1:glEXhBS5PSLLv4IXzLA5yPRVX4bilULVyxxbrfOtDAk=
+github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
 github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
@@ -57,6 +85,10 @@ github.com/dlclark/regexp2 v1.2.0 h1:8sAhBGEM0dRWogWqWyQeIJnxjWO6oIjl8FKqREDsGfk
 github.com/dlclark/regexp2 v1.2.0/go.mod h1:2pZnwuY/m+8K6iRw6wQdMtk+rH5tNGR1i55kozfMjCc=
 github.com/dop251/goja v0.0.0-20200424152103-d0b8fda54cd0 h1:EfFAcaAwGai/wlDCWwIObHBm3T2C2CCPX/SaS0fpOJ4=
 github.com/dop251/goja v0.0.0-20200424152103-d0b8fda54cd0/go.mod h1:Mw6PkjjMXWbTj+nnj4s3QPXq1jaT0s5pC0iFD4+BOAA=
+github.com/eapache/go-resiliency v1.1.0/go.mod h1:kFI+JgMyC7bLPUVY133qvEBtVayf5mFgVsvEsIPBvNs=
+github.com/eapache/go-xerial-snappy v0.0.0-20180814174437-776d5712da21/go.mod h1:+020luEh2TKB4/GOp8oxxtq0Daoen/Cii55CzbTV6DU=
+github.com/eapache/queue v1.1.0/go.mod h1:6eCeP0CKFpHLu8blIFXhExK/dRa7WDZfr6jVFPTqq+I=
+github.com/envoyproxy/go-control-plane v0.6.9/go.mod h1:SBwIajubJHhxtWwsL9s8ss4safvEdbitLhGGK48rN6g=
 github.com/friendsofgo/graphiql v0.2.2/go.mod h1:8Y2kZ36AoTGWs78+VRpvATyt3LJBx0SZXmay80ZTRWo=
 github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
@@ -65,6 +97,8 @@ github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4
 github.com/garyburd/redigo v1.6.0 h1:0VruCpn7yAIIu7pWVClQC8wxCJEcG3nyzpMSHKi1PQc=
 github.com/garyburd/redigo v1.6.0/go.mod h1:NR3MbYisc3/PwhQ00EMzDiPmrwpPxAn5GI05/YaO1SY=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
+github.com/go-ini/ini v1.25.4 h1:Mujh4R/dH6YL8bxuISne3xX2+qcQ9p0IxKAP6ExWoUo=
+github.com/go-ini/ini v1.25.4/go.mod h1:ByCAeIL28uOIIG0E3PJtZPDL8WnHpFKFOtgjp+3Ies8=
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
@@ -75,19 +109,41 @@ github.com/gobuffalo/flect v0.2.1 h1:GPoRjEN0QObosV4XwuoWvSd5uSiL0N3e91/xqyY4crQ
 github.com/gobuffalo/flect v0.2.1/go.mod h1:vmkQwuZYhN5Pc4ljYQZzP+1sq+NEkK+lh20jmEmX3jc=
 github.com/gofrs/uuid v3.2.0+incompatible h1:y12jRkkFxsd7GpqdSZ+/KCs/fJbqpEXSGd4+jfEaewE=
 github.com/gofrs/uuid v3.2.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
+github.com/gogo/googleapis v1.1.0/go.mod h1:gf4bu3Q80BeJ6H1S1vYPm8/ELATdvryBaNFGgqEef3s=
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@@ -96,8 +152,11 @@ github.com/gosimple/slug v1.9.0/go.mod h1:AMZ+sOVe65uByN3kgEyf9WEBKBCSS+dJjMX9x4
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@@ -144,8 +203,13 @@ github.com/jackc/puddle v0.0.0-20190608224051-11cab39313c9/go.mod h1:m4B5Dj62Y0f
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@@ -189,30 +255,47 @@ github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRW
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@@ -291,6 +375,12 @@ github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q
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@@ -309,43 +399,74 @@ golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2 h1:VklqNMn3ovrHsnt90Pveol
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+golang.org/x/tools v0.0.0-20191010075000-0337d82405ff/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5 h1:hKsoRgsbwY1NafxrwTs+k64bikrLBkAgPir1TNCj3Zs=
 golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
@@ -377,10 +510,37 @@ golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8T
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
+google.golang.org/api v0.7.0/go.mod h1:WtwebWUNSVBH/HAw79HIFXZNqEvBhG+Ra+ax0hx3E3M=
+google.golang.org/api v0.8.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg=
+google.golang.org/api v0.9.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg=
+google.golang.org/api v0.10.0 h1:7tmAxx3oKE98VMZ+SBZzvYYWRQ9HODBxmC8mXUsraSQ=
+google.golang.org/api v0.10.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
+google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
+google.golang.org/appengine v1.5.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
+google.golang.org/appengine v1.6.1/go.mod h1:i06prIuMbXzDqacNJfV5OdTW448YApPu5ww/cMBSeb0=
+google.golang.org/appengine v1.6.2 h1:j8RI1yW0SkI+paT6uGwMlrMI/6zwYA6/CFil8rxOzGI=
+google.golang.org/appengine v1.6.2/go.mod h1:i06prIuMbXzDqacNJfV5OdTW448YApPu5ww/cMBSeb0=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
+google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
+google.golang.org/genproto v0.0.0-20190418145605-e7d98fc518a7/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
+google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb h1:i1Ppqkc3WQXikh8bXiwHqAN5Rv3/qDCcRk0/Otx73BY=
+google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
+google.golang.org/genproto v0.0.0-20190502173448-54afdca5d873/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
+google.golang.org/genproto v0.0.0-20190801165951-fa694d86fc64/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
+google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
+google.golang.org/genproto v0.0.0-20190911173649-1774047e7e51 h1:Ex1mq5jaJof+kRnYi3SlYJ8KKa9Ao3NHyIT5XJ1gF6U=
+google.golang.org/genproto v0.0.0-20190911173649-1774047e7e51/go.mod h1:IbNlFCBrqXvoKpeg0TB2l7cyZUmoaFKYIwrEpbDKLA8=
+google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
+google.golang.org/grpc v1.20.0/go.mod h1:chYK+tFQF0nDUGJgXMSgLCQk3phJEuONr2DCgLDdAQM=
+google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
+google.golang.org/grpc v1.21.0 h1:G+97AoqBnmZIT91cLG/EkCoK9NSelj64P8bOHHNmGn0=
 google.golang.org/grpc v1.21.0/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
+google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
+google.golang.org/grpc v1.23.1 h1:q4XQuHFC6I28BKZpo6IYyb3mNO+l7lSOxRuYTCiDfXk=
+google.golang.org/grpc v1.23.1/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -389,12 +549,14 @@ gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
+gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
 gopkg.in/inconshreveable/log15.v2 v2.0.0-20180818164646-67afb5ed74ec/go.mod h1:aPpfJ7XW+gOuirDoZ8gHhLh3kZ1B08FtV2bbmy7Jv3s=
 gopkg.in/ini.v1 v1.51.0 h1:AQvPpx3LzTDM0AjnIRlVFwFFGC+npRopjZxLJj6gdno=
 gopkg.in/ini.v1 v1.51.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/ini.v1 v1.55.0 h1:E8yzL5unfpW3M6fz/eB7Cb5MQAYSZ7GKo4Qth+N2sgQ=
 gopkg.in/ini.v1 v1.55.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
+gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
@@ -402,7 +564,12 @@ gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099 h1:XJP7lxbSxWLOMNdBE4B/STaqVy6L73o0knwj2vIlxnw=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.1-2019.2.3 h1:3JgtbtFHMiCmsznwGVTUWbgGov+pVqnlf1dEJTNAXeM=
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
+rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=

internal/serv/api.go

@@ -24,6 +24,8 @@ type Config struct {
 	Core `mapstructure:",squash"`
 	Serv `mapstructure:",squash"`
 
+	closeFn  func()
+	hostPort string
 	cpath    string
 	vi       *viper.Viper
 }
@@ -48,9 +50,30 @@ type Serv struct {
 	APIPath        string   `mapstructure:"api_path"`
 	CacheControl   string   `mapstructure:"cache_control"`
 
+	// Telemetry struct contains OpenCensus metrics and tracing related config
+	Telemetry struct {
+		Debug    bool
+		Interval *time.Duration
+		Metrics  struct {
+			Exporter  string
+			Endpoint  string
+			Namespace string
+			Key       string
+		}
+
+		Tracing struct {
+			Exporter      string
+			Endpoint      string
+			Sample        string
+			IncludeQuery  bool `mapstructure:"include_query"`
+			IncludeParams bool `mapstructure:"include_params"`
+		}
+	}
+
 	Auth  auth.Auth
 	Auths []auth.Auth
 
+	// DB struct contains db config
 	DB struct {
 		Type        string
 		Host        string

internal/serv/cmd.go

@@ -19,8 +19,8 @@ const (
 
 var (
 	// These variables are set using -ldflags
-	version        string
-	gitBranch      string
+	version        string = "unknown"
+	gitBranch      string = "unknown"
 	lastCommitSHA  string
 	lastCommitTime string
 )

internal/serv/cmd_migrate.go

@@ -55,7 +55,7 @@ func cmdDBReset(cmd *cobra.Command, args []string) {
 func cmdDBCreate(cmd *cobra.Command, args []string) {
 	initConfOnce()
 
-	db, err := initDB(conf, false)
+	db, err := initDB(conf, false, false)
 	if err != nil {
 		log.Fatalf("ERR failed to connect to database: %s", err)
 	}
@@ -74,7 +74,7 @@ func cmdDBCreate(cmd *cobra.Command, args []string) {
 func cmdDBDrop(cmd *cobra.Command, args []string) {
 	initConfOnce()
 
-	db, err := initDB(conf, false)
+	db, err := initDB(conf, false, false)
 	if err != nil {
 		log.Fatalf("ERR failed to connect to database: %s", err)
 	}
@@ -132,7 +132,7 @@ func cmdDBMigrate(cmd *cobra.Command, args []string) {
 	initConfOnce()
 	dest := args[0]
 
-	conn, err := initDB(conf, true)
+	conn, err := initDB(conf, true, false)
 	if err != nil {
 		log.Fatalf("ERR failed to connect to database: %s", err)
 	}
@@ -224,7 +224,7 @@ func cmdDBMigrate(cmd *cobra.Command, args []string) {
 func cmdDBStatus(cmd *cobra.Command, args []string) {
 	initConfOnce()
 
-	db, err := initDB(conf, true)
+	db, err := initDB(conf, true, false)
 	if err != nil {
 		log.Fatalf("ERR failed to connect to database: %s", err)
 	}

internal/serv/cmd_seed.go

@@ -26,10 +26,9 @@ func cmdDBSeed(cmd *cobra.Command, args []string) {
 	if conf, err = initConf(); err != nil {
 		log.Fatalf("ERR failed to read config: %s", err)
 	}
-
 	conf.Production = false
 
-	db, err = initDB(conf, true)
+	db, err = initDB(conf, true, false)
 	if err != nil {
 		log.Fatalf("ERR failed to connect to database: %s", err)
 	}
@@ -80,6 +79,8 @@ func graphQLFunc(sg *core.SuperGraph, query string, data interface{}, opt map[st
 
 	if v, ok := opt["user_id"]; ok && len(v) != 0 {
 		ct = context.WithValue(ct, core.UserIDKey, v)
+	} else {
+		ct = context.WithValue(ct, core.UserIDKey, "-1")
 	}
 
 	// var role string
@@ -349,7 +350,6 @@ func setFakeFuncs(f *goja.Object) {
 	f.Set("credit_card", gofakeit.CreditCard)
 	f.Set("credit_card_cvv", gofakeit.CreditCardCvv)
 	f.Set("credit_card_number", gofakeit.CreditCardNumber)
-	f.Set("credit_card_number_luhn", gofakeit.CreditCardNumberLuhn)
 	f.Set("credit_card_type", gofakeit.CreditCardType)
 	f.Set("currency", gofakeit.Currency)
 	f.Set("currency_long", gofakeit.CurrencyLong)
@@ -368,7 +368,6 @@ func setFakeFuncs(f *goja.Object) {
 	// Hacker
 	f.Set("hacker_abbreviation", gofakeit.HackerAbbreviation)
 	f.Set("hacker_adjective", gofakeit.HackerAdjective)
-	f.Set("hacker_ingverb", gofakeit.HackerIngverb)
 	f.Set("hacker_noun", gofakeit.HackerNoun)
 	f.Set("hacker_phrase", gofakeit.HackerPhrase)
 	f.Set("hacker_verb", gofakeit.HackerVerb)

internal/serv/cmd_serv.go

@@ -19,7 +19,7 @@ func cmdServ(cmd *cobra.Command, args []string) {
 
 	initWatcher()
 
-	db, err = initDB(conf, true)
+	db, err = initDB(conf, true, true)
 	if err != nil {
 		fatalInProd(err, "failed to connect to database")
 	}

internal/serv/config.go

@@ -111,6 +111,10 @@ func GetConfigName() string {
 	return ge
 }
 
+func (c *Config) telemetryEnabled() bool {
+	return c.Telemetry.Debug || c.Telemetry.Metrics.Exporter != "" || c.Telemetry.Tracing.Exporter != ""
+}
+
 func (c *Config) relPath(p string) string {
 	if filepath.IsAbs(p) {
 		return p

internal/serv/core.go

@@ -1,7 +0,0 @@
-package serv
-
-// func (c *coreContext) handleReq(w io.Writer, req *http.Request) error {
-
-// 	return nil
-
-// }

internal/serv/health.go

@@ -7,8 +7,8 @@ import (
 
 var healthyResponse = []byte("All's Well")
 
-func health(w http.ResponseWriter, _ *http.Request) {
-	ct, cancel := context.WithTimeout(context.Background(), conf.DB.PingTimeout)
+func health(w http.ResponseWriter, r *http.Request) {
+	ct, cancel := context.WithTimeout(r.Context(), conf.DB.PingTimeout)
 	defer cancel()
 
 	if err := db.PingContext(ct); err != nil {

internal/serv/http.go

@@ -10,6 +10,8 @@ import (
 	"github.com/dosco/super-graph/core"
 	"github.com/dosco/super-graph/internal/serv/internal/auth"
 	"github.com/rs/cors"
+	"go.opencensus.io/plugin/ochttp"
+	"go.opencensus.io/trace"
 	"go.uber.org/zap"
 )
 
@@ -44,7 +46,7 @@ func apiV1Handler() http.Handler {
 			AllowCredentials: true,
 			Debug:            conf.DebugCORS,
 		})
-		h = c.Handler(h)
+		return c.Handler(h)
 	}
 
 	return h
@@ -78,6 +80,22 @@ func apiV1(w http.ResponseWriter, r *http.Request) {
 	doLog := true
 	res, err := sg.GraphQL(ct, req.Query, req.Vars)
 
+	if conf.telemetryEnabled() {
+		span := trace.FromContext(ct)
+
+		span.AddAttributes(
+			trace.StringAttribute("operation", res.OperationName()),
+			trace.StringAttribute("query_name", res.QueryName()),
+			trace.StringAttribute("role", res.Role()),
+		)
+
+		if err != nil {
+			span.AddAttributes(trace.StringAttribute("error", err.Error()))
+		}
+
+		ochttp.SetRoute(ct, apiRoute)
+	}
+
 	if !conf.Production && res.QueryName() == introspectionQuery {
 		doLog = false
 	}

internal/serv/init.go

@@ -12,6 +12,7 @@ import (
 	"strings"
 	"time"
 
+	"contrib.go.opencensus.io/integrations/ocsql"
 	"github.com/jackc/pgx/v4"
 	"github.com/jackc/pgx/v4/stdlib"
 	//_ "github.com/jackc/pgx/v4/stdlib"
@@ -45,6 +46,16 @@ func initConf() (*Config, error) {
 		logLevel = LogLevelNone
 	}
 
+	// copy over db_schema from the core config
+	if c.DB.Schema == "" {
+		c.DB.Schema = c.DBSchema
+	}
+
+	// set default database schema
+	if c.DB.Schema == "" {
+		c.DB.Schema = "public"
+	}
+
 	// Auths: validate and sanitize
 	am := make(map[string]struct{})
 
@@ -100,13 +111,10 @@ func initConf() (*Config, error) {
 		c.UseAllowList = true
 	}
 
-	// In anon role block all tables that are not defined in the role
-	c.DefaultBlock = true
-
 	return c, nil
 }
 
-func initDB(c *Config, useDB bool) (*sql.DB, error) {
+func initDB(c *Config, useDB, useTelemetry bool) (*sql.DB, error) {
 	var db *sql.DB
 	var err error
 
@@ -200,16 +208,56 @@ func initDB(c *Config, useDB bool) (*sql.DB, error) {
 	// 	config.MaxConns = conf.DB.PoolSize
 	// }
 
-	for i := 1; i < 10; i++ {
-		db = stdlib.OpenDB(*config)
-		if db == nil {
-			break
+	connString := stdlib.RegisterConnConfig(config)
+	driverName := "pgx"
+	// if db = stdlib.OpenDB(*config); db == nil {
+	// 	return errors.New("failed to open db")
+	// }
+
+	if useTelemetry && conf.telemetryEnabled() {
+		opts := ocsql.TraceOptions{
+			AllowRoot:    true,
+			Ping:         true,
+			RowsNext:     true,
+			RowsClose:    true,
+			RowsAffected: true,
+			LastInsertID: true,
+			Query:        conf.Telemetry.Tracing.IncludeQuery,
+			QueryParams:  conf.Telemetry.Tracing.IncludeParams,
 		}
+		opt := ocsql.WithOptions(opts)
+		name := ocsql.WithInstanceName(conf.AppName)
+
+		driverName, err = ocsql.Register(driverName, opt, name)
+		if err != nil {
+			return nil, fmt.Errorf("unable to register ocsql driver: %v", err)
+		}
+		ocsql.RegisterAllViews()
+
+		var interval time.Duration
+
+		if conf.Telemetry.Interval != nil {
+			interval = *conf.Telemetry.Interval
+		} else {
+			interval = 5 * time.Second
+		}
+
+		defer ocsql.RecordStats(db, interval)()
+
+		log.Println("INF OpenCensus telemetry enabled")
+	}
+
+	for i := 1; i < 10; i++ {
+		db, err = sql.Open(driverName, connString)
+		if err != nil {
+			continue
+		}
+
 		time.Sleep(time.Duration(i*100) * time.Millisecond)
 	}
 
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("unable to open db connection: %v", err)
 	}
 
 	return db, nil

internal/serv/serv.go

@@ -13,6 +13,11 @@ import (
 	rice "github.com/GeertJohan/go.rice"
 	"github.com/NYTimes/gziphandler"
 	"github.com/dosco/super-graph/internal/serv/internal/auth"
+	"go.opencensus.io/plugin/ochttp"
+)
+
+var (
+	apiRoute string = "/api/v1/graphql"
 )
 
 func initWatcher() {
@@ -37,7 +42,6 @@ func initWatcher() {
 }
 
 func startHTTP() {
-	var hostPort string
 	var appName string
 
 	defaultHP := "0.0.0.0:8080"
@@ -56,12 +60,12 @@ func startHTTP() {
 				hp[1] = conf.Port
 			}
 
-			hostPort = fmt.Sprintf("%s:%s", hp[0], hp[1])
+			conf.hostPort = fmt.Sprintf("%s:%s", hp[0], hp[1])
 		}
 	}
 
-	if len(hostPort) == 0 {
-		hostPort = defaultHP
+	if len(conf.hostPort) == 0 {
+		conf.hostPort = defaultHP
 	}
 
 	routes, err := routeHandler()
@@ -70,13 +74,17 @@ func startHTTP() {
 	}
 
 	srv := &http.Server{
-		Addr:           hostPort,
+		Addr:           conf.hostPort,
 		Handler:        routes,
 		ReadTimeout:    5 * time.Second,
 		WriteTimeout:   10 * time.Second,
 		MaxHeaderBytes: 1 << 20,
 	}
 
+	if conf.telemetryEnabled() {
+		srv.Handler = &ochttp.Handler{Handler: routes}
+	}
+
 	idleConnsClosed := make(chan struct{})
 	go func() {
 		sigint := make(chan os.Signal, 1)
@@ -90,13 +98,15 @@ func startHTTP() {
 	}()
 
 	srv.RegisterOnShutdown(func() {
+		if conf.closeFn != nil {
+			conf.closeFn()
+		}
 		db.Close()
+		log.Fatalln("INF shutdown complete")
 	})
 
-	log.Printf("INF version: %s, git-branch: %s, host-port: %s, app-name: %s, env: %s\n",
-		version, gitBranch, hostPort, appName, env)
-
-	log.Printf("INF %s started\n", serverName)
+	log.Printf("INF Super Graph started, version: %s, git-branch: %s, host-port: %s, app-name: %s, env: %s\n",
+		version, gitBranch, conf.hostPort, appName, env)
 
 	if err := srv.ListenAndServe(); err != http.ErrServerClosed {
 		log.Fatalln("INF server closed")
@@ -106,14 +116,13 @@ func startHTTP() {
 }
 
 func routeHandler() (http.Handler, error) {
+	var err error
 	mux := http.NewServeMux()
 
 	if conf == nil {
 		return mux, nil
 	}
 
-	apiRoute := "/api/v1/graphql"
-
 	if len(conf.APIPath) != 0 {
 		apiRoute = path.Join("/", conf.APIPath, "/v1/graphql")
 	}
@@ -142,6 +151,13 @@ func routeHandler() (http.Handler, error) {
 		mux.Handle(k, v)
 	}
 
+	if conf.telemetryEnabled() {
+		conf.closeFn, err = enableObservability(mux)
+		if err != nil {
+			return nil, err
+		}
+	}
+
 	fn := func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Server", serverName)
 		mux.ServeHTTP(w, r)
@@ -169,6 +185,10 @@ func setActionRoutes(routes map[string]http.Handler) error {
 			routes[p] = fn
 		}
 
+		if conf.telemetryEnabled() {
+			routes[p] = ochttp.WithRouteTag(routes[p], p)
+		}
+
 		if err != nil {
 			return err
 		}

internal/serv/telemetry.go

@@ -0,0 +1,141 @@
+package serv
+
+import (
+	"fmt"
+	"net/http"
+	"strconv"
+	"sync"
+
+	"contrib.go.opencensus.io/exporter/aws"
+	"contrib.go.opencensus.io/exporter/prometheus"
+	"contrib.go.opencensus.io/exporter/stackdriver"
+
+	"contrib.go.opencensus.io/exporter/zipkin"
+	"contrib.go.opencensus.io/integrations/ocsql"
+	stdzipkin "github.com/openzipkin/zipkin-go"
+	httpreporter "github.com/openzipkin/zipkin-go/reporter/http"
+	"go.opencensus.io/stats/view"
+	"go.opencensus.io/trace"
+	"go.opencensus.io/zpages"
+)
+
+func enableObservability(mux *http.ServeMux) (func(), error) {
+	// Enable OpenCensus zPages
+	if conf.Telemetry.Debug {
+		zpages.Handle(mux, "/telemetry")
+	}
+
+	// Enable ocsql metrics with OpenCensus
+	ocsql.RegisterAllViews()
+
+	var mex view.Exporter
+	var tex trace.Exporter
+
+	var mCloseFn, tCloseFn func()
+	var err error
+
+	// Set up the metrics exporter
+	switch conf.Telemetry.Metrics.Exporter {
+	case "prometheus":
+		ep := "/metrics"
+
+		if conf.Telemetry.Metrics.Endpoint != "" {
+			ep = conf.Telemetry.Metrics.Endpoint
+		}
+
+		ex, err1 := prometheus.NewExporter(prometheus.Options{Namespace: conf.Telemetry.Metrics.Namespace})
+		if err == nil {
+			mux.Handle(ep, ex)
+			log.Printf("INF Prometheus exporter listening on: %s", ep)
+		}
+		mex, err = view.Exporter(ex), err1
+
+	case "stackdriver":
+		mex, err = stackdriver.NewExporter(stackdriver.Options{ProjectID: conf.Telemetry.Metrics.Key})
+		if err == nil {
+			log.Println("INF Google Stackdriver exporter initialized")
+		}
+
+	case "":
+		log.Println("WRN OpenCensus: no metrics exporter defined")
+
+	default:
+		err = fmt.Errorf("invalid metrics exporter")
+	}
+
+	if err != nil {
+		return nil, fmt.Errorf("ERR OpenCensus: %s: %v", conf.Telemetry.Metrics, err)
+	}
+
+	if mex != nil {
+		// Register the exporter
+		view.RegisterExporter(mex)
+	}
+
+	// Set up the tracing exporter
+	switch conf.Telemetry.Tracing.Exporter {
+	case "xray", "aws":
+		ex, err1 := aws.NewExporter(aws.WithVersion("latest"))
+		if err == nil {
+			tCloseFn = func() { ex.Flush() }
+			log.Println("INF Amazon X-Ray exporter initialized")
+		}
+		tex, err = trace.Exporter(ex), err1
+
+	case "zipkin":
+		// The local endpoint stores the name and address of the local service
+		lep, err := stdzipkin.NewEndpoint(conf.AppName, conf.hostPort)
+		if err != nil {
+			return nil, err
+		}
+
+		// The Zipkin reporter takes collected spans from the app and reports them to the backend
+		// http://localhost:9411/api/v2/spans is the default for the Zipkin Span v2
+		re := httpreporter.NewReporter(conf.Telemetry.Tracing.Endpoint)
+		tCloseFn = func() { re.Close() }
+		tex = zipkin.NewExporter(re, lep)
+
+	case "":
+		log.Println("WRN OpenCensus: no traceing exporter defined")
+
+	default:
+		err = fmt.Errorf("invalid tracing exporter")
+	}
+
+	if err != nil {
+		return nil, fmt.Errorf("ERR OpenCensus: %s: %v",
+			conf.Telemetry.Tracing.Exporter,
+			err)
+	}
+
+	if tex != nil {
+		trace.RegisterExporter(tex)
+		sample := conf.Telemetry.Tracing.Sample
+
+		if sample == "always" {
+			trace.ApplyConfig(trace.Config{DefaultSampler: trace.AlwaysSample()})
+
+		} else {
+			prob := 0.5
+			if v, err := strconv.ParseFloat(sample, 10); err == nil {
+				prob = v
+			}
+			trace.ApplyConfig(trace.Config{DefaultSampler: trace.ProbabilitySampler(prob)})
+
+		}
+	}
+
+	var closeOnce sync.Once
+
+	return func() {
+		// Flush and shutdown the Zipkin HTTP reporter
+		closeOnce.Do(func() {
+			if mCloseFn != nil {
+				mCloseFn()
+			}
+			if tCloseFn != nil {
+				tCloseFn()
+			}
+		})
+	}, err
+}

internal/serv/tmpl/dev.yml

@@ -69,6 +69,16 @@ cors_debug: false
 #   person: people
 #   sheep: sheep
 
+# open opencensus tracing and metrics
+# telemetry:
+#   debug: true
+#   metrics:
+#     exporter: "prometheus"
+#   tracing:
+#     exporter: "zipkin"
+#     endpoint: "http://zipkin:9411/api/v2/spans"
+#     sample: 0.6
+
 auth:
   # Can be 'rails', 'jwt' or 'header'
   type: rails

internal/serv/tmpl/prod.yml

@@ -68,6 +68,16 @@ reload_on_config_change: false
 # SG_AUTH_RAILS_REDIS_PASSWORD
 # SG_AUTH_JWT_PUBLIC_KEY_FILE
 
+# open opencensus tracing and metrics
+# telemetry:
+#   debug: false
+#   metrics:
+#     exporter: "prometheus"
+#   tracing:
+#     exporter: "zipkin"
+#     endpoint: "http://zipkin:9411/api/v2/spans"
+#     sample: 0.6
+
 database:
   type: postgres
   host: db

internal/serv/utils_test.go

@@ -3,6 +3,8 @@ package serv
 import (
 	"strings"
 	"testing"
+
+	"github.com/brianvoe/gofakeit/v5"
 )
 
 func TestGQLHash1(t *testing.T) {
@@ -229,3 +231,7 @@ func TestGQLHashWithVars2(t *testing.T) {
 		t.Fatal("Hashes don't match they should")
 	}
 }
+
+func TestGoFake(t *testing.T) {
+	gofakeit.Person()
+}