core: Use context package from Go stdlib

config.go

@@ -47,7 +47,7 @@ type Config struct {
 
 func (config *Config) validate() error {
 	if config.Logger == nil {
-		config.Logger = log.New(os.Stdout, "[tusd] ", log.Ldate | log.Ltime)
+		config.Logger = log.New(os.Stdout, "[tusd] ", log.Ldate|log.Ltime)
 	}
 
 	base := config.BasePath

datastore.go

@@ -1,9 +1,8 @@
 package tusd
 
 import (
+	"context"
 	"io"
-
-	"golang.org/x/net/context"
 )
 
 type MetaData map[string]string

gcsstore/gcsservice.go

@@ -1,21 +1,20 @@
 package gcsstore
 
 import (
+	"context"
 	"errors"
 	"fmt"
+	"hash/crc32"
 	"io"
 	"math"
 	"strconv"
 	"strings"
 
 	"cloud.google.com/go/storage"
-	"golang.org/x/net/context"
 	"google.golang.org/api/googleapi"
 	"google.golang.org/api/iterator"
 	"google.golang.org/api/option"
 
-	"hash/crc32"
-
 	"github.com/vimeo/go-util/crc32combine"
 )
 

gcsstore/gcsservice_test.go

@@ -2,7 +2,7 @@ package gcsstore_test
 
 import (
 	"bytes"
-	"golang.org/x/net/context"
+	"context"
 	"testing"
 
 	"gopkg.in/h2non/gock.v1"

gcsstore/gcsstore.go

@@ -12,6 +12,7 @@ package gcsstore
 
 import (
 	"bytes"
+	"context"
 	"encoding/json"
 	"fmt"
 	"io"
@@ -20,8 +21,6 @@ import (
 	"sync"
 	"sync/atomic"
 
-	"golang.org/x/net/context"
-
 	"cloud.google.com/go/storage"
 	"github.com/tus/tusd"
 	"github.com/tus/tusd/uid"

gcsstore/gcsstore_test.go

@@ -2,12 +2,11 @@ package gcsstore_test
 
 import (
 	"bytes"
+	"context"
 	"encoding/json"
 	"fmt"
 	"testing"
 
-	"golang.org/x/net/context"
-
 	"cloud.google.com/go/storage"
 	"github.com/golang/mock/gomock"
 	"github.com/stretchr/testify/assert"

unrouted_handler.go

@@ -1,6 +1,7 @@
 package tusd
 
 import (
+	"context"
 	"encoding/base64"
 	"errors"
 	"io"
@@ -14,8 +15,6 @@ import (
 	"strings"
 	"sync/atomic"
 	"time"
-
-	"golang.org/x/net/context"
 )
 
 const UploadLengthDeferred = "1"