docs: add telemetry docs

fix: add http tracing so end-to-end tracing is possible
fix: update embedded static assets
2020-05-24 10:44:00 -04:00 · 2020-05-24 02:24:24 -04:00 · 2020-05-23 16:53:39 -04:00 · 2020-05-23 16:37:27 -04:00 · 2020-05-23 11:50:38 -04:00 · 2020-05-23 11:43:57 -04:00
37 changed files with 751 additions and 202 deletions
--- a/README.md
+++ b/README.md
@ -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

--- a/config/dev.yml
+++ b/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
--- a/config/prod.yml
+++ b/config/prod.yml
@ -12,7 +12,7 @@ log_level: "info"
 # enable or disable http compression (uses gzip)
 http_compress: true

-# When production mode is 'true' only queries 
+# When production mode is 'true' only queries
 # from the allow list are permitted.
 # When it's 'false' all queries are saved to the
 # the allow list in ./config/allow.list
@ -32,7 +32,7 @@ enable_tracing: true
 # Path pointing to where the migrations can be found
 # migrations_path: ./migrations

-# Secret key for general encryption operations like 
+# Secret key for general encryption operations like
 # encrypting the cursor data
 # secret_key: supercalifajalistics

@ -57,11 +57,20 @@ database:
  password: postgres
  #pool_size: 10
  #max_retries: 0
-  #log_level: "debug" 
+  #log_level: "debug"

  # Set session variable "user.id" to the user id
  # Enable this if you need the user id in triggers, etc
  set_user_id: false

  # database ping timeout is used for db health checking
-  ping_timeout: 5m
+  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
--- a/core/api_test.go
+++ b/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)
--- a/core/config.go
+++ b/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)
--- a/core/core.go
+++ b/core/core.go
@ -93,8 +93,7 @@ func (sg *SuperGraph) initCompilers() error {
 	}

 	sg.qc, err = qcode.NewCompiler(qcode.Config{
-		DefaultBlock: sg.conf.DefaultBlock,
-		Blocklist:    sg.conf.Blocklist,
+		Blocklist: sg.conf.Blocklist,
 	})
 	if err != nil {
 		return err
@ -276,9 +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 {
--- a/core/init.go
+++ b/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
 			}
 		}
@ -215,28 +215,28 @@ func addRoles(c *Config, qc *qcode.Compiler) error {
 	return nil
 }

-func addRole(qc *qcode.Compiler, r Role, t RoleTable) error {
-	blocked := struct {
-		readOnly bool
-		query    bool
-		insert   bool
-		update   bool
-		delete   bool
-	}{true, true, true, true, true}
+func addRole(qc *qcode.Compiler, r Role, t RoleTable, defaultAllow bool) error {
+	ro := true // read-only

-	if r.Name == "anon" {
-		blocked.query = false
-	} else {
-		blocked.readOnly = false
-		blocked.query = false
-		blocked.insert = false
-		blocked.update = false
-		blocked.delete = false
+	if defaultAllow {
+		ro = false
+	}
+
+	if r.Name != "anon" {
+		ro = false
 	}

 	if t.ReadOnly != nil {
-		blocked.readOnly = *t.ReadOnly
+		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
 	}
@ -272,18 +272,17 @@ func addRole(qc *qcode.Compiler, r Role, t RoleTable) error {
 		Block:   blocked.update,
 	}

-	delete := qcode.DeleteConfig{
+	del := qcode.DeleteConfig{
 		Filters: t.Delete.Filters,
 		Columns: t.Delete.Columns,
 		Block:   blocked.delete,
 	}

 	return qc.AddRole(r.Name, t.Name, qcode.TRConfig{
-		ReadOnly: blocked.readOnly,
-		Query:    query,
-		Insert:   insert,
-		Update:   update,
-		Delete:   delete,
+		Query:  query,
+		Insert: insert,
+		Update: update,
+		Delete: del,
 	})
 }

--- a/core/internal/allow/allow.go
+++ b/core/internal/allow/allow.go
@ -40,7 +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 {
@ -50,7 +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 {
@ -60,7 +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 {
@ -70,12 +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
@ -112,7 +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")
 	}

@ -253,7 +253,7 @@ func (al *List) save(item Item) error {
 	item.Name = QueryName(query)
 	item.key = strings.ToLower(item.Name)

-	if len(item.Name) == 0 {
+	if item.Name == "" {
 		return nil
 	}

@ -272,7 +272,7 @@ 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
@ -296,7 +296,7 @@ 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
 			}

--- a/core/internal/integration_tests/cockroachdb/cockroachdb_test.go
+++ b/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")

--- a/core/internal/integration_tests/integration_tests.go
+++ b/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}},
 			},
 		},
 	}
--- a/core/internal/integration_tests/postgresql/postgresql_test.go
+++ b/core/internal/integration_tests/postgresql/postgresql_test.go
@ -15,13 +15,13 @@ 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)
+
+		integration_tests.DropSchema(t, db)
+		integration_tests.SetupSchema(t, db)
+		integration_tests.TestSuperGraph(t, db, func(t *testing.T) {
+		})
 	}
-
-	db, err := sql.Open("pgx", url)
-	require.NoError(t, err)
-
-	integration_tests.DropSchema(t, db)
-	integration_tests.SetupSchema(t, db)
-	integration_tests.TestSuperGraph(t, db, func(t *testing.T) {
-	})
 }
--- a/core/internal/psql/query.go
+++ b/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, `, `)
 		}

-		c.renderRootSelect(root)
+		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
--- a/core/internal/qcode/config.go
+++ b/core/internal/qcode/config.go
@ -7,8 +7,7 @@ import (
 )

 type Config struct {
-	Blocklist    []string
-	DefaultBlock bool
+	Blocklist []string
 }

 type QueryConfig struct {
@ -40,11 +39,10 @@ type DeleteConfig struct {
 }

 type TRConfig struct {
-	ReadOnly bool
-	Query    QueryConfig
-	Insert   InsertConfig
-	Update   UpdateConfig
-	Delete   DeleteConfig
+	Query  QueryConfig
+	Insert InsertConfig
+	Update UpdateConfig
+	Delete DeleteConfig
 }

 type trval struct {
--- a/core/internal/qcode/qcode.go
+++ b/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))

@ -207,7 +207,7 @@ func NewFilter() *Exp {

 func (com *Compiler) AddRole(role, table string, trc TRConfig) error {
 	var err error
-	trv := &trval{readOnly: trc.ReadOnly}
+	trv := &trval{}

 	// query config
 	trv.query.fil, trv.query.filNU, err = compileFilter(trc.Query.Filters)
@ -333,59 +333,82 @@ func (com *Compiler) compileQuery(qc *QCode, op *Operation, role string) error {
 		}

 		trv := com.getRole(role, field.Name)
+		skipRender := false

-		switch action {
-		case QTQuery:
-			if trv.query.block {
-				continue
+		if trv != nil {
+			switch action {
+			case QTQuery:
+				if trv.query.block {
+					skipRender = true
+				}
+
+			case QTInsert:
+				if trv.insert.block {
+					return fmt.Errorf("insert blocked: %s", field.Name)
+				}
+
+			case QTUpdate:
+				if trv.update.block {
+					return fmt.Errorf("update blocked: %s", field.Name)
+				}
+
+			case QTDelete:
+				if trv.delete.block {
+					return fmt.Errorf("delete blocked: %s", field.Name)
+				}
 			}

-		case QTInsert:
-			if trv.insert.block || trv.readOnly {
-				return fmt.Errorf("insert blocked: %s", field.Name)
-			}
-
-		case QTUpdate:
-			if trv.update.block || trv.readOnly {
-				return fmt.Errorf("update blocked: %s", field.Name)
-			}
-
-		case QTDelete:
-			if trv.delete.block || trv.readOnly {
-				return fmt.Errorf("delete blocked: %s", 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,
+			ID:         id,
+			ParentID:   parentID,
+			Name:       field.Name,
+			SkipRender: skipRender,
 		})
 		s := &selects[(len(selects) - 1)]

-		switch action {
-		case QTQuery:
-			s.Functions = !trv.query.disable.funcs
-			s.Paging.Limit = trv.query.limit
-
-		case QTInsert:
-			s.PresetMap = trv.insert.psmap
-			s.PresetList = trv.insert.pslist
-
-		case QTUpdate:
-			s.PresetMap = trv.update.psmap
-			s.PresetList = trv.update.pslist
-		}
-
 		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
+				s.Paging.Limit = trv.query.limit
+
+			case QTInsert:
+				s.PresetMap = trv.insert.psmap
+				s.PresetList = trv.insert.pslist
+
+			case QTUpdate:
+				s.PresetMap = trv.update.psmap
+				s.PresetList = trv.update.pslist
+			}
+		}
+
 		err := com.compileArgs(qc, s, field.Args, role)
 		if err != nil {
 			return err
@ -394,13 +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

@ -440,14 +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 {
@ -838,14 +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) {
--- a/core/prepare.go
+++ b/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)
 	}
--- a/docs/website/docs/telemetry.md
+++ b/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')} />
--- a/docs/website/sidebars.js
+++ b/docs/website/sidebars.js
@ -9,6 +9,7 @@ module.exports = {
      "react",
      "advanced",
      "security",
+      "telemetry",
      "config",
      "deploy",
      "internals",
--- a/docs/website/static/img/zipkin1.png
+++ b/docs/website/static/img/zipkin1.png
--- a/docs/website/static/img/zipkin2.png
+++ b/docs/website/static/img/zipkin2.png
--- a/go.mod
+++ b/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
--- a/go.sum
+++ b/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=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
+github.com/gogo/protobuf v1.2.0/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
 github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zVXpSg4=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
+github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6 h1:ZgQEtGgCBiWRM39fZuwSd1LwSqqSW0hOdXCYYDX0R3I=
+github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
+github.com/golang/mock v1.2.0/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
+github.com/golang/mock v1.3.1/go.mod h1:sBzyDLLjw3U8JLTeZvSv8jJB+tU5PVekmnlKIyFUx0Y=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.1 h1:YF8+flBXS5eO826T4nzqPrxfhQThhXl0YzfuUPu4SBg=
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.2 h1:6nsPYzhq5kReh6QImI3k5qWzO4PEbvbIW2cwSfR/6xs=
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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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@ -164,6 +228,7 @@ github.com/lib/pq v1.0.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
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@ -176,6 +241,7 @@ github.com/mattn/go-isatty v0.0.7/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hd
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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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@ -261,6 +344,7 @@ github.com/spf13/viper v1.4.0 h1:yXHLWeravcrgGyFSyCgdYpXQ9dR9c/WED3pg1RhxqEU=
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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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@ -354,17 +475,29 @@ golang.org/x/sys v0.0.0-20200413165638-669c56c373c4 h1:opSr2sbRXk5X5/givKrrKj9HX
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@ -377,10 +510,37 @@ golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8T
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 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=
--- a/internal/serv/api.go
+++ b/internal/serv/api.go
@ -24,8 +24,10 @@ type Config struct {
 	Core `mapstructure:",squash"`
 	Serv `mapstructure:",squash"`

-	cpath string
-	vi    *viper.Viper
+	closeFn  func()
+	hostPort string
+	cpath    string
+	vi       *viper.Viper
 }

 // Serv struct contains config values used by the Super Graph service
@ -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
--- a/internal/serv/cmd.go
+++ b/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
 )
--- a/internal/serv/cmd_migrate.go
+++ b/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)
 	}
--- a/internal/serv/cmd_seed.go
+++ b/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)
--- a/internal/serv/cmd_serv.go
+++ b/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")
 	}
--- a/internal/serv/config.go
+++ b/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
--- a/internal/serv/core.go
+++ b/internal/serv/core.go
@ -1,7 +0,0 @@
-package serv
-
-// func (c *coreContext) handleReq(w io.Writer, req *http.Request) error {
-
-// 	return nil
-
-// }
--- a/internal/serv/health.go
+++ b/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 {
--- a/internal/serv/http.go
+++ b/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
 	}
--- a/internal/serv/init.go
+++ b/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"
@ -110,13 +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

@ -210,16 +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
--- a/internal/serv/rice-box.go
+++ b/internal/serv/rice-box.go
--- a/internal/serv/serv.go
+++ b/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
 		}
--- a/internal/serv/telemetry.go
+++ b/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
+}
--- a/internal/serv/tmpl/dev.yml
+++ b/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
--- a/internal/serv/tmpl/prod.yml
+++ b/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
--- a/internal/serv/utils_test.go
+++ b/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()
+}
Author	SHA1	Message	Date
Vikram Rangnekar	31afdac3af	docs: add telemetry docs	2020-05-24 10:44:00 -04:00
Vikram Rangnekar	1344246287	fix: add http tracing so end-to-end tracing is possible	2020-05-24 02:24:24 -04:00
Vikram Rangnekar	7b25873438	fix: update embedded static assets	2020-05-23 16:53:39 -04:00
Vikram Rangnekar	d572b4f753	fix: allow unauthenticated operations in seed script	2020-05-23 16:37:27 -04:00
Vikram Rangnekar	cd69b5a78f	docs: add opencensus support to the README	2020-05-23 11:50:38 -04:00
Vikram Rangnekar	01ad9b71ba	feat: add opencensus tracing and metrics support	2020-05-23 11:43:57 -04:00
Vikram Rangnekar	b64daaf034	fix: issue with breaking changes in gofakeit	2020-05-22 16:52:42 -04:00
Vikram Rangnekar	c7837bf758	feat: add open opencensus telemetry support	2020-05-22 16:49:54 -04:00