Lints (#117)

Fix a few lints that are somewhat easier to think about.

.golangci.yaml

@@ -9,7 +9,6 @@ linters:
     - dupl
     - errcheck
     - gochecknoinits
-    - goconst
     - gocritic
     - gocyclo
     - gofmt

go.mod

@@ -3,11 +3,9 @@ module github.com/aws/aws-xray-sdk-go
 require (
 	github.com/DATA-DOG/go-sqlmock v1.2.0
 	github.com/aws/aws-sdk-go v1.17.12
-	github.com/davecgh/go-spew v0.0.0-20160907170601-6d212800a42e
-	github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af
+	github.com/davecgh/go-spew v0.0.0-20160907170601-6d212800a42e // indirect
 	github.com/pkg/errors v0.8.1
-	github.com/pmezard/go-difflib v0.0.0-20151028094244-d8ed2627bdf0
+	github.com/pmezard/go-difflib v0.0.0-20151028094244-d8ed2627bdf0 // indirect
 	github.com/stretchr/testify v1.1.4
-	golang.org/x/net v0.0.0-20190301231341-16b79f2e4e95
-	golang.org/x/text v0.0.0-20190306152657-5d731a35f486
+	golang.org/x/net v0.0.0-20190311183353-d8887717615a
 )

go.sum

@@ -12,8 +12,9 @@ github.com/pmezard/go-difflib v0.0.0-20151028094244-d8ed2627bdf0 h1:GD+A8+e+wFkq
 github.com/pmezard/go-difflib v0.0.0-20151028094244-d8ed2627bdf0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/testify v1.1.4 h1:ToftOQTytwshuOSj6bDSolVUa3GINfJP/fg3OkkOzQQ=
 github.com/stretchr/testify v1.1.4/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
-golang.org/x/net v0.0.0-20190301231341-16b79f2e4e95 h1:fY7Dsw114eJN4boqzVSbpVHO6rTdhq6/GnXeu+PKnzU=
-golang.org/x/net v0.0.0-20190301231341-16b79f2e4e95/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/text v0.0.0-20190306152657-5d731a35f486 h1:XzEEnDs8NtiSU8gJvzuDjv+Kam+0nPN9pjOA3oZlxIY=
-golang.org/x/text v0.0.0-20190306152657-5d731a35f486/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
-golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/net v0.0.0-20190311183353-d8887717615a h1:oWX7TPOiFAMXLq8o0ikBYfCJVlRHBcsciT5bXOrH628=
+golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=

internal/logger/logger.go

@@ -15,7 +15,7 @@ import (
 	"github.com/aws/aws-xray-sdk-go/xraylog"
 )
 
-// This internal pacakge hides the actual logging functions from the user.
+// This internal package hides the actual logging functions from the user.
 
 // The Logger instance used by xray to log. Set via xray.SetLogger().
 var Logger xraylog.Logger = xraylog.NewDefaultLogger(os.Stdout, xraylog.LogLevelInfo)

strategy/sampling/centralized_test.go

@@ -966,7 +966,7 @@ func TestRefreshManifestRuleAddition(t *testing.T) {
 	assert.Equal(t, r2, ss.manifest.Rules[1])
 	assert.Equal(t, r3, ss.manifest.Rules[2])
 
-	// Assert on size of manfiest
+	// Assert on size of manifest
 	assert.Equal(t, 3, len(ss.manifest.Rules))
 	assert.Equal(t, 3, len(ss.manifest.Index))
 

xray/aws.go

@@ -87,19 +87,6 @@ var xRayBeforeSignHandler = request.NamedHandler{
 	},
 }
 
-var xRayAfterSignHandler = request.NamedHandler{
-	Name: "XRayAfterSignHandler",
-	Fn: func(r *request.Request) {
-		endSubsegment(r)
-	},
-}
-
-var xRayBeforeSendHandler = request.NamedHandler{
-	Name: "XRayBeforeSendHandler",
-	Fn: func(r *request.Request) {
-	},
-}
-
 var xRayAfterSendHandler = request.NamedHandler{
 	Name: "XRayAfterSendHandler",
 	Fn: func(r *request.Request) {
@@ -287,8 +274,7 @@ func (j *jsonMap) data() interface{} {
 }
 
 func (j *jsonMap) search(keys ...string) *jsonMap {
-	var object interface{}
-	object = j.data()
+	object := j.data()
 
 	for target := 0; target < len(keys); target++ {
 		if mmap, ok := object.(map[string]interface{}); ok {

xray/config_test.go

@@ -72,7 +72,7 @@ func (te *TestEmitter) Emit(seg *Segment) {}
 func (te *TestEmitter) RefreshEmitterWithAddress(raddr *net.UDPAddr) {}
 
 func (cms *TestContextMissingStrategy) ContextMissing(v interface{}) {
-	fmt.Sprintf("Test ContextMissing Strategy %v", v)
+	fmt.Printf("Test ContextMissing Strategy %v\n", v)
 }
 
 func stashEnv() []string {

xray/default_emitter_test.go

@@ -11,10 +11,11 @@ package xray
 import (
 	"encoding/json"
 	"fmt"
-	"github.com/stretchr/testify/assert"
 	"math/rand"
 	"testing"
 	"time"
+
+	"github.com/stretchr/testify/assert"
 )
 
 func TestNoNeedStreamingStrategy(t *testing.T) {

xray/default_streaming_strategy_test.go

@@ -9,8 +9,9 @@
 package xray
 
 import (
-	"github.com/stretchr/testify/assert"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
 )
 
 func TestDefaultStreamingStrategyMaxSegmentSize(t *testing.T) {

xray/lambda_test.go

@@ -2,8 +2,9 @@ package xray
 
 import (
 	"context"
-	"github.com/stretchr/testify/assert"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
 )
 
 func TestLambdaSegmentEmit(t *testing.T) {

xray/segment.go

@@ -162,7 +162,7 @@ func BeginSubsegment(ctx context.Context, name string) (context.Context, *Segmen
 		name = name[:200]
 	}
 
-	parent := &Segment{}
+	var parent *Segment
 	// first time to create facade segment
 	if getTraceHeaderFromContext(ctx) != nil && GetSegment(ctx) == nil {
 		_, parent = newFacadeSegment(ctx)
@@ -445,10 +445,8 @@ func (seg *Segment) AddError(err error) error {
 	return nil
 }
 
-func (seg *Segment) addError(err error) error {
+func (seg *Segment) addError(err error) {
 	seg.Fault = true
 	seg.GetCause().WorkingDirectory, _ = os.Getwd()
 	seg.GetCause().Exceptions = append(seg.GetCause().Exceptions, seg.ParentSegment.GetConfiguration().ExceptionFormattingStrategy.ExceptionFromError(err))
-
-	return nil
 }

xray/segment_test.go

@@ -39,7 +39,7 @@ func TestSubsegmentDataRace(t *testing.T) {
 		go func() {
 			defer wg.Done()
 			ctx, seg := BeginSubsegment(ctx, "TestSubsegment1")
-			ctx, seg2 := BeginSubsegment(ctx, "TestSubsegment2")
+			_, seg2 := BeginSubsegment(ctx, "TestSubsegment2")
 			seg2.Close(nil)
 			seg.Close(nil)
 		}()

xray/sql.go

@@ -295,4 +295,4 @@ func processNilSegment(ctx context.Context) {
 	} else {
 		globalCfg.ContextMissingStrategy().ContextMissing(failedMessage)
 	}
-}
+}

xray/util_test.go

@@ -11,10 +11,11 @@ package xray
 import (
 	"context"
 	"encoding/json"
-	"github.com/aws/aws-xray-sdk-go/header"
 	"net"
 	"net/http"
 	"time"
+
+	"github.com/aws/aws-xray-sdk-go/header"
 )
 
 var (

xraylog/xray_log.go

@@ -61,7 +61,7 @@ func NewDefaultLogger(w io.Writer, minLogLevel LogLevel) Logger {
 }
 
 type defaultLogger struct {
-	mu sync.Mutex
+	mu       sync.Mutex
 	w        io.Writer
 	minLevel LogLevel
 }