Remove unused function aggregateGoroutinesWithDelay

staging/src/k8s.io/legacy-cloud-providers/azure/azure_utils.go

@@ -21,9 +21,6 @@ package azure
 import (
 	"context"
 	"sync"
-	"time"
-
-	utilerrors "k8s.io/apimachinery/pkg/util/errors"
 )
 
 // lockMap used to lock on entries
@@ -77,21 +74,3 @@ func (lm *lockMap) unlockEntry(entry string) {
 func getContextWithCancel() (context.Context, context.CancelFunc) {
 	return context.WithCancel(context.Background())
 }
-
-// aggregateGoroutinesWithDelay aggregates goroutines and runs them
-// in parallel with delay before starting each goroutine
-func aggregateGoroutinesWithDelay(delay time.Duration, funcs ...func() error) utilerrors.Aggregate {
-	errChan := make(chan error, len(funcs))
-
-	for _, f := range funcs {
-		go func(f func() error) { errChan <- f() }(f)
-		time.Sleep(delay)
-	}
-	errs := make([]error, 0)
-	for i := 0; i < cap(errChan); i++ {
-		if err := <-errChan; err != nil {
-			errs = append(errs, err)
-		}
-	}
-	return utilerrors.NewAggregate(errs)
-}

staging/src/k8s.io/legacy-cloud-providers/azure/azure_utils_test.go

@@ -19,7 +19,6 @@ limitations under the License.
 package azure
 
 import (
-	"fmt"
 	"testing"
 	"time"
 )
@@ -84,67 +83,3 @@ func ensureNoCallback(t *testing.T, callbackChan <-chan interface{}) bool {
 		return true
 	}
 }
-
-// running same unit tests as https://github.com/kubernetes/apimachinery/blob/master/pkg/util/errors/errors_test.go#L371
-func TestAggregateGoroutinesWithDelay(t *testing.T) {
-	testCases := []struct {
-		errs     []error
-		expected map[string]bool
-	}{
-		{
-			[]error{},
-			nil,
-		},
-		{
-			[]error{nil},
-			nil,
-		},
-		{
-			[]error{nil, nil},
-			nil,
-		},
-		{
-			[]error{fmt.Errorf("1")},
-			map[string]bool{"1": true},
-		},
-		{
-			[]error{fmt.Errorf("1"), nil},
-			map[string]bool{"1": true},
-		},
-		{
-			[]error{fmt.Errorf("1"), fmt.Errorf("267")},
-			map[string]bool{"1": true, "267": true},
-		},
-		{
-			[]error{fmt.Errorf("1"), nil, fmt.Errorf("1234")},
-			map[string]bool{"1": true, "1234": true},
-		},
-		{
-			[]error{nil, fmt.Errorf("1"), nil, fmt.Errorf("1234"), fmt.Errorf("22")},
-			map[string]bool{"1": true, "1234": true, "22": true},
-		},
-	}
-	for i, testCase := range testCases {
-		funcs := make([]func() error, len(testCase.errs))
-		for i := range testCase.errs {
-			err := testCase.errs[i]
-			funcs[i] = func() error { return err }
-		}
-		agg := aggregateGoroutinesWithDelay(100*time.Millisecond, funcs...)
-		if agg == nil {
-			if len(testCase.expected) > 0 {
-				t.Errorf("%d: expected %v, got nil", i, testCase.expected)
-			}
-			continue
-		}
-		if len(agg.Errors()) != len(testCase.expected) {
-			t.Errorf("%d: expected %d errors in aggregate, got %v", i, len(testCase.expected), agg)
-			continue
-		}
-		for _, err := range agg.Errors() {
-			if !testCase.expected[err.Error()] {
-				t.Errorf("%d: expected %v, got aggregate containing %v", i, testCase.expected, err)
-			}
-		}
-	}
-}

staging/src/k8s.io/legacy-cloud-providers/azure/azure_vmss.go

@@ -26,7 +26,6 @@ import (
 	"strconv"
 	"strings"
 	"sync"
-	"time"
 
 	"github.com/Azure/azure-sdk-for-go/services/compute/mgmt/2019-07-01/compute"
 	"github.com/Azure/azure-sdk-for-go/services/network/mgmt/2019-06-01/network"
@@ -56,13 +55,6 @@ var (
 	vmssVMProviderIDRE     = regexp.MustCompile(`azure:///subscriptions/(?:.*)/resourceGroups/(.+)/providers/Microsoft.Compute/virtualMachineScaleSets/(.+)/virtualMachines/(?:\d+)`)
 )
 
-const (
-	// vmssVMInstanceUpdateDelay is used when updating multiple vm instances in parallel
-	// the optimum value is 3s to prevent any conflicts that result in concurrent vmss vm
-	// instances update
-	vmssVMInstanceUpdateDelay = 3 * time.Second
-)
-
 // vmssMetaInfo contains the metadata for a VMSS.
 type vmssMetaInfo struct {
 	vmssName      string

staging/src/k8s.io/legacy-cloud-providers/azure/clients/armclient/mockarmclient/BUILD

@@ -10,6 +10,7 @@ go_library(
     importpath = "k8s.io/legacy-cloud-providers/azure/clients/armclient/mockarmclient",
     visibility = ["//visibility:public"],
     deps = [
+        "//staging/src/k8s.io/legacy-cloud-providers/azure/clients/armclient:go_default_library",
         "//staging/src/k8s.io/legacy-cloud-providers/azure/retry:go_default_library",
         "//vendor/github.com/Azure/go-autorest/autorest:go_default_library",
         "//vendor/github.com/Azure/go-autorest/autorest/azure:go_default_library",

staging/src/k8s.io/legacy-cloud-providers/azure/clients/vmssvmclient/BUILD

@@ -11,6 +11,7 @@ go_library(
     importpath = "k8s.io/legacy-cloud-providers/azure/clients/vmssvmclient",
     visibility = ["//visibility:public"],
     deps = [
+        "//staging/src/k8s.io/apimachinery/pkg/util/errors:go_default_library",
         "//staging/src/k8s.io/client-go/util/flowcontrol:go_default_library",
         "//staging/src/k8s.io/legacy-cloud-providers/azure/clients:go_default_library",
         "//staging/src/k8s.io/legacy-cloud-providers/azure/clients/armclient:go_default_library",

staging/src/k8s.io/legacy-cloud-providers/azure/mockvmsets/azure_mock_vmsets.go

@@ -26,7 +26,7 @@ import (
 	gomock "github.com/golang/mock/gomock"
 	v1 "k8s.io/api/core/v1"
 	types "k8s.io/apimachinery/pkg/types"
-	cloud_provider "k8s.io/cloud-provider"
+	cloudprovider "k8s.io/cloud-provider"
 	cache "k8s.io/legacy-cloud-providers/azure/cache"
 )
 
@@ -130,10 +130,10 @@ func (mr *MockVMSetMockRecorder) GetNodeNameByProviderID(providerID interface{})
 }
 
 // GetZoneByNodeName mocks base method
-func (m *MockVMSet) GetZoneByNodeName(name string) (cloud_provider.Zone, error) {
+func (m *MockVMSet) GetZoneByNodeName(name string) (cloudprovider.Zone, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "GetZoneByNodeName", name)
-	ret0, _ := ret[0].(cloud_provider.Zone)
+	ret0, _ := ret[0].(cloudprovider.Zone)
 	ret1, _ := ret[1].(error)
 	return ret0, ret1
 }