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Merge pull request #635 from cpuguy83/define_errdefs_package

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Define errdefs package
This commit is contained in:
Brian Goff
2019-06-04 14:35:54 -07:00
committed by GitHub
parent 8340407f98 ece39fde19
commit 20e710043f
47 changed files with 460 additions and 1002 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
Gopkg.lock generated
View File

@@ -145,18 +145,6 @@
revision = "24333298e36590ea0716598caacc8959fc393c48"
version = "v0.0.2"
[[projects]]
digest = "1:62e5b997b5ada9b5f71e759c3474f2a0de8de1b21473bab9e4f98c5aa69c05eb"
name = "github.com/cpuguy83/strongerrors"
packages = [
".",
"status",
"status/ocstatus",
]
pruneopts = "NUT"
revision = "05f877ca1e627f0a1e01902ba78c63f1ef7db5a3"
version = "v0.2.1"
[[projects]]
digest = "1:a2c1d0e43bd3baaa071d1b9ed72c27d78169b2b269f71c105ac4ba34b1be4a39"
name = "github.com/davecgh/go-spew"
@@ -1332,9 +1320,6 @@
"github.com/aws/aws-sdk-go/service/ecs/ecsiface",
"github.com/aws/aws-sdk-go/service/iam",
"github.com/cenkalti/backoff",
"github.com/cpuguy83/strongerrors",
"github.com/cpuguy83/strongerrors/status",
"github.com/cpuguy83/strongerrors/status/ocstatus",
"github.com/davecgh/go-spew/spew",
"github.com/google/go-cmp/cmp",
"github.com/google/uuid",

4
Gopkg.toml
View File

@@ -70,10 +70,6 @@
name = "github.com/gophercloud/gophercloud"
revision = "954aa14363ced787c28efcfcd15ae6945eb862fb"
[[constraint]]
name = "github.com/cpuguy83/strongerrors"
version = "0.2.1"
[[override]]
name = "github.com/docker/docker"
revision = "49bf474f9ed7ce7143a59d1964ff7b7fd9b52178"

5
cmd/virtual-kubelet/commands/root/node.go
View File

@@ -18,8 +18,7 @@ import (
"context"
"strings"
"github.com/cpuguy83/strongerrors"
"github.com/pkg/errors"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
"github.com/virtual-kubelet/virtual-kubelet/providers"
"github.com/virtual-kubelet/virtual-kubelet/version"
corev1 "k8s.io/api/core/v1"
@@ -100,7 +99,7 @@ func getTaint(c Opts) (*corev1.Taint, error) {
case "PreferNoSchedule":
effect = corev1.TaintEffectPreferNoSchedule
default:
return nil, strongerrors.InvalidArgument(errors.Errorf("taint effect %q is not supported", effectEnv))
return nil, errdefs.InvalidInputf("taint effect %q is not supported", effectEnv)
}
return &corev1.Taint{

6
cmd/virtual-kubelet/commands/root/root.go
View File

@@ -20,9 +20,9 @@ import (
"path"
"time"
"github.com/cpuguy83/strongerrors"
"github.com/pkg/errors"
"github.com/spf13/cobra"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
"github.com/virtual-kubelet/virtual-kubelet/log"
"github.com/virtual-kubelet/virtual-kubelet/manager"
"github.com/virtual-kubelet/virtual-kubelet/providers"
@@ -64,11 +64,11 @@ func runRootCommand(ctx context.Context, c Opts) error {
defer cancel()
if ok := providers.ValidOperatingSystems[c.OperatingSystem]; !ok {
return strongerrors.InvalidArgument(errors.Errorf("operating system %q is not supported", c.OperatingSystem))
return errdefs.InvalidInputf("operating system %q is not supported", c.OperatingSystem)
}
if c.PodSyncWorkers == 0 {
return strongerrors.InvalidArgument(errors.New("pod sync workers must be greater than 0"))
return errdefs.InvalidInput("pod sync workers must be greater than 0")
}
var taint *corev1.Taint

8
cmd/virtual-kubelet/commands/root/tracing.go
View File

@@ -22,8 +22,8 @@ import (
"strconv"
"strings"
"github.com/cpuguy83/strongerrors"
"github.com/pkg/errors"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
"github.com/virtual-kubelet/virtual-kubelet/log"
"github.com/virtual-kubelet/virtual-kubelet/trace/opencensus"
octrace "go.opencensus.io/trace"
@@ -41,7 +41,7 @@ var (
func setupTracing(ctx context.Context, c Opts) error {
for k := range c.TraceConfig.Tags {
if reservedTagNames[k] {
return strongerrors.InvalidArgument(errors.Errorf("invalid trace tag %q, must not use a reserved tag key", k))
return errdefs.InvalidInputf("invalid trace tag %q, must not use a reserved tag key", k)
}
}
if c.TraceConfig.Tags == nil {
@@ -72,10 +72,10 @@ func setupTracing(ctx context.Context, c Opts) error {
default:
rate, err := strconv.Atoi(c.TraceSampleRate)
if err != nil {
return strongerrors.InvalidArgument(errors.Wrap(err, "unsupported trace sample rate"))
return errdefs.AsInvalidInput(errors.Wrap(err, "unsupported trace sample rate"))
}
if rate < 0 || rate > 100 {
return strongerrors.InvalidArgument(errors.Wrap(err, "trace sample rate must be between 0 and 100"))
return errdefs.AsInvalidInput(errors.Wrap(err, "trace sample rate must be between 0 and 100"))
}
s = octrace.ProbabilitySampler(float64(rate) / 100)
}

65
errdefs/invalid.go Normal file
View File

@@ -0,0 +1,65 @@
package errdefs
import (
"errors"
"fmt"
)
// InvalidInput is an error interface which denotes whether the opration failed due
// to a the resource not being found.
type ErrInvalidInput interface {
InvalidInput() bool
error
}
type invalidInputError struct {
error
}
func (e *invalidInputError) InvalidInput() bool {
return true
}
func (e *invalidInputError) Cause() error {
return e.error
}
// AsInvalidInput wraps the passed in error to make it of type ErrInvalidInput
//
// Callers should make sure the passed in error has exactly the error message
// it wants as this function does not decorate the message.
func AsInvalidInput(err error) error {
if err == nil {
return nil
}
return &invalidInputError{err}
}
// InvalidInput makes an ErrInvalidInput from the provided error message
func InvalidInput(msg string) error {
return &invalidInputError{errors.New(msg)}
}
// InvalidInputf makes an ErrInvalidInput from the provided error format and args
func InvalidInputf(format string, args ...interface{}) error {
return &invalidInputError{fmt.Errorf(format, args...)}
}
// IsInvalidInput determines if the passed in error is of type ErrInvalidInput
//
// This will traverse the causal chain (`Cause() error`), until it finds an error
// which implements the `InvalidInput` interface.
func IsInvalidInput(err error) bool {
if err == nil {
return false
}
if e, ok := err.(ErrInvalidInput); ok {
return e.InvalidInput()
}
if e, ok := err.(causal); ok {
return IsInvalidInput(e)
}
return false
}

80
errdefs/invalid_test.go Normal file
View File

@@ -0,0 +1,80 @@
package errdefs
import (
"errors"
"fmt"
"testing"
"gotest.tools/assert"
"gotest.tools/assert/cmp"
)
type testingInvalidInputError bool
func (e testingInvalidInputError) Error() string {
return fmt.Sprintf("%v", bool(e))
}
func (e testingInvalidInputError) InvalidInput() bool {
return bool(e)
}
func TestIsInvalidInput(t *testing.T) {
type testCase struct {
name string
err error
xMsg string
xInvalidInput bool
}
for _, c := range []testCase{
{
name: "InvalidInputf",
err: InvalidInputf("%s not found", "foo"),
xMsg: "foo not found",
xInvalidInput: true,
},
{
name: "AsInvalidInput",
err: AsInvalidInput(errors.New("this is a test")),
xMsg: "this is a test",
xInvalidInput: true,
},
{
name: "AsInvalidInputWithNil",
err: AsInvalidInput(nil),
xMsg: "",
xInvalidInput: false,
},
{
name: "nilError",
err: nil,
xMsg: "",
xInvalidInput: false,
},
{
name: "customInvalidInputFalse",
err: testingInvalidInputError(false),
xMsg: "false",
xInvalidInput: false,
},
{
name: "customInvalidInputTrue",
err: testingInvalidInputError(true),
xMsg: "true",
xInvalidInput: true,
},
} {
t.Run(c.name, func(t *testing.T) {
assert.Check(t, cmp.Equal(IsInvalidInput(c.err), c.xInvalidInput))
if c.err != nil {
assert.Check(t, cmp.Equal(c.err.Error(), c.xMsg))
}
})
}
}
func TestInvalidInputCause(t *testing.T) {
err := errors.New("test")
assert.Equal(t, (&invalidInputError{err}).Cause(), err)
}

65
errdefs/notfound.go Normal file
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@@ -0,0 +1,65 @@
package errdefs
import (
"errors"
"fmt"
)
// NotFound is an error interface which denotes whether the opration failed due
// to a the resource not being found.
type ErrNotFound interface {
NotFound() bool
error
}
type notFoundError struct {
error
}
func (e *notFoundError) NotFound() bool {
return true
}
func (e *notFoundError) Cause() error {
return e.error
}
// AsNotFound wraps the passed in error to make it of type ErrNotFound
//
// Callers should make sure the passed in error has exactly the error message
// it wants as this function does not decorate the message.
func AsNotFound(err error) error {
if err == nil {
return nil
}
return &notFoundError{err}
}
// NotFound makes an ErrNotFound from the provided error message
func NotFound(msg string) error {
return &notFoundError{errors.New(msg)}
}
// NotFoundf makes an ErrNotFound from the provided error format and args
func NotFoundf(format string, args ...interface{}) error {
return &notFoundError{fmt.Errorf(format, args...)}
}
// IsNotFound determines if the passed in error is of type ErrNotFound
//
// This will traverse the causal chain (`Cause() error`), until it finds an error
// which implements the `NotFound` interface.
func IsNotFound(err error) bool {
if err == nil {
return false
}
if e, ok := err.(ErrNotFound); ok {
return e.NotFound()
}
if e, ok := err.(causal); ok {
return IsNotFound(e)
}
return false
}

80
errdefs/notfound_test.go Normal file
View File

@@ -0,0 +1,80 @@
package errdefs
import (
"errors"
"fmt"
"testing"
"gotest.tools/assert"
"gotest.tools/assert/cmp"
)
type testingNotFoundError bool
func (e testingNotFoundError) Error() string {
return fmt.Sprintf("%v", bool(e))
}
func (e testingNotFoundError) NotFound() bool {
return bool(e)
}
func TestIsNotFound(t *testing.T) {
type testCase struct {
name string
err error
xMsg string
xNotFound bool
}
for _, c := range []testCase{
{
name: "NotFoundf",
err: NotFoundf("%s not found", "foo"),
xMsg: "foo not found",
xNotFound: true,
},
{
name: "AsNotFound",
err: AsNotFound(errors.New("this is a test")),
xMsg: "this is a test",
xNotFound: true,
},
{
name: "AsNotFoundWithNil",
err: AsNotFound(nil),
xMsg: "",
xNotFound: false,
},
{
name: "nilError",
err: nil,
xMsg: "",
xNotFound: false,
},
{
name: "customNotFoundFalse",
err: testingNotFoundError(false),
xMsg: "false",
xNotFound: false,
},
{
name: "customNotFoundTrue",
err: testingNotFoundError(true),
xMsg: "true",
xNotFound: true,
},
} {
t.Run(c.name, func(t *testing.T) {
assert.Check(t, cmp.Equal(IsNotFound(c.err), c.xNotFound))
if c.err != nil {
assert.Check(t, cmp.Equal(c.err.Error(), c.xMsg))
}
})
}
}
func TestNotFoundCause(t *testing.T) {
err := errors.New("test")
assert.Equal(t, (&notFoundError{err}).Cause(), err)
}

10
errdefs/wrapped.go Normal file
View File

@@ -0,0 +1,10 @@
package errdefs
// Causal is an error interface for errors which have wrapped another error
// in a non-opaque way.
//
// This pattern is used by github.com/pkg/errors
type causal interface {
Cause() error
error
}

4
providers/alibabacloud/eci.go
View File

@@ -17,7 +17,7 @@ import (
"time"
"github.com/aliyun/alibaba-cloud-sdk-go/sdk/requests"
"github.com/cpuguy83/strongerrors"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
"github.com/virtual-kubelet/virtual-kubelet/log"
"github.com/virtual-kubelet/virtual-kubelet/manager"
"github.com/virtual-kubelet/virtual-kubelet/providers/alibabacloud/eci"
@@ -254,7 +254,7 @@ func (p *ECIProvider) DeletePod(ctx context.Context, pod *v1.Pod) error {
}
}
if eciId == "" {
return strongerrors.NotFound(fmt.Errorf("DeletePod can't find Pod %s-%s", pod.Namespace, pod.Name))
return errdefs.NotFoundf("DeletePod can't find Pod %s-%s", pod.Namespace, pod.Name)
}
request := eci.CreateDeleteContainerGroupRequest()

4
providers/alibabacloud/errors.go
View File

@@ -4,7 +4,7 @@ import (
"net/http"
"github.com/aliyun/alibaba-cloud-sdk-go/sdk/errors"
"github.com/cpuguy83/strongerrors"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
)
func wrapError(err error) error {
@@ -19,7 +19,7 @@ func wrapError(err error) error {
switch se.HttpStatus() {
case http.StatusNotFound:
return strongerrors.NotFound(err)
return errdefs.AsNotFound(err)
default:
return err
}

4
providers/aws/fargate/cluster.go
View File

@@ -12,7 +12,7 @@ import (
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/cloudwatchlogs"
"github.com/aws/aws-sdk-go/service/ecs"
"github.com/cpuguy83/strongerrors"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
"github.com/virtual-kubelet/virtual-kubelet/vkubelet/api"
k8sTypes "k8s.io/apimachinery/pkg/types"
)
@@ -276,7 +276,7 @@ func (c *Cluster) GetPod(namespace string, name string) (*Pod, error) {
tag := buildTaskDefinitionTag(c.name, namespace, name)
pod, ok := c.pods[tag]
if !ok {
return nil, strongerrors.NotFound(fmt.Errorf("pod %s/%s is not found", namespace, name))
return nil, errdefs.NotFoundf("pod %s/%s is not found", namespace, name)
}
return pod, nil

4
providers/azure/aci.go
View File

@@ -19,11 +19,11 @@ import (
"sync"
"time"
"github.com/cpuguy83/strongerrors"
"github.com/gorilla/websocket"
client "github.com/virtual-kubelet/azure-aci/client"
"github.com/virtual-kubelet/azure-aci/client/aci"
"github.com/virtual-kubelet/azure-aci/client/network"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
"github.com/virtual-kubelet/virtual-kubelet/log"
"github.com/virtual-kubelet/virtual-kubelet/manager"
"github.com/virtual-kubelet/virtual-kubelet/trace"
@@ -777,7 +777,7 @@ func (p *ACIProvider) GetContainerLogs(ctx context.Context, namespace, podName,
}
if cg.Tags["NodeName"] != p.nodeName {
return nil, strongerrors.NotFound(errors.New("got unexpected pod node name"))
return nil, errdefs.NotFound("got unexpected pod node name")
}
// get logs from cg

4
providers/azure/errors.go
View File

@@ -3,8 +3,8 @@ package azure
import (
"net/http"
"github.com/cpuguy83/strongerrors"
"github.com/virtual-kubelet/azure-aci/client/api"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
)
func wrapError(err error) error {
@@ -19,7 +19,7 @@ func wrapError(err error) error {
switch e.StatusCode {
case http.StatusNotFound:
return strongerrors.NotFound(err)
return errdefs.AsNotFound(err)
default:
return err
}

7
providers/azure/metrics.go
View File

@@ -5,7 +5,6 @@ import (
"strings"
"time"
"github.com/cpuguy83/strongerrors/status/ocstatus"
"github.com/pkg/errors"
"github.com/virtual-kubelet/azure-aci/client/aci"
"github.com/virtual-kubelet/virtual-kubelet/log"
@@ -97,7 +96,7 @@ func (p *ACIProvider) GetStatsSummary(ctx context.Context) (summary *stats.Summa
Types: []aci.MetricType{aci.MetricTypeCPUUsage, aci.MetricTypeMemoryUsage},
})
if err != nil {
span.SetStatus(ocstatus.FromError(err))
span.SetStatus(err)
return errors.Wrapf(err, "error fetching cpu/mem stats for container group %s", cgName)
}
logger.Debug("Got system stats")
@@ -109,7 +108,7 @@ func (p *ACIProvider) GetStatsSummary(ctx context.Context) (summary *stats.Summa
Types: []aci.MetricType{aci.MetricTyperNetworkBytesRecievedPerSecond, aci.MetricTyperNetworkBytesTransmittedPerSecond},
})
if err != nil {
span.SetStatus(ocstatus.FromError(err))
span.SetStatus(err)
return errors.Wrapf(err, "error fetching network stats for container group %s", cgName)
}
logger.Debug("Got network stats")
@@ -120,7 +119,7 @@ func (p *ACIProvider) GetStatsSummary(ctx context.Context) (summary *stats.Summa
}
if err := errGroup.Wait(); err != nil {
span.SetStatus(ocstatus.FromError(err))
span.SetStatus(err)
return nil, errors.Wrap(err, "error in request to fetch container group metrics")
}
close(chResult)

4
providers/azurebatch/errors.go
View File

@@ -5,7 +5,7 @@ import (
"github.com/Azure/go-autorest/autorest"
"github.com/Azure/go-autorest/autorest/azure"
"github.com/cpuguy83/strongerrors"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
)
func wrapError(err error) error {
@@ -14,7 +14,7 @@ func wrapError(err error) error {
}
switch {
case isStatus(err, http.StatusNotFound):
return strongerrors.NotFound(err)
return errdefs.AsNotFound(err)
default:
return err
}

12
providers/cri/cri.go
View File

@@ -16,8 +16,8 @@ import (
"syscall"
"time"
"github.com/cpuguy83/strongerrors"
log "github.com/sirupsen/logrus"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
"github.com/virtual-kubelet/virtual-kubelet/manager"
"github.com/virtual-kubelet/virtual-kubelet/providers"
"github.com/virtual-kubelet/virtual-kubelet/vkubelet/api"
@@ -569,7 +569,7 @@ func (p *CRIProvider) DeletePod(ctx context.Context, pod *v1.Pod) error {
ps, ok := p.podStatus[pod.UID]
if !ok {
return strongerrors.NotFound(fmt.Errorf("Pod %s not found", pod.UID))
return errdefs.NotFoundf("Pod %s not found", pod.UID)
}
// TODO: Check pod status for running state
@@ -601,7 +601,7 @@ func (p *CRIProvider) GetPod(ctx context.Context, namespace, name string) (*v1.P
pod := p.findPodByName(namespace, name)
if pod == nil {
return nil, strongerrors.NotFound(fmt.Errorf("Pod %s in namespace %s could not be found on the node", name, namespace))
return nil, errdefs.NotFoundf("Pod %s in namespace %s could not be found on the node", name, namespace)
}
return createPodSpecFromCRI(pod, p.nodeName), nil
@@ -638,11 +638,11 @@ func (p *CRIProvider) GetContainerLogs(ctx context.Context, namespace, podName,
pod := p.findPodByName(namespace, podName)
if pod == nil {
return nil, strongerrors.NotFound(fmt.Errorf("Pod %s in namespace %s not found", podName, namespace))
return nil, errdefs.NotFoundf("Pod %s in namespace %s not found", podName, namespace)
}
container := pod.containers[containerName]
if container == nil {
return nil, strongerrors.NotFound(fmt.Errorf("Cannot find container %s in pod %s namespace %s", containerName, podName, namespace))
return nil, errdefs.NotFoundf("Cannot find container %s in pod %s namespace %s", containerName, podName, namespace)
}
return readLogFile(container.LogPath, opts)
@@ -686,7 +686,7 @@ func (p *CRIProvider) GetPodStatus(ctx context.Context, namespace, name string)
pod := p.findPodByName(namespace, name)
if pod == nil {
return nil, strongerrors.NotFound(fmt.Errorf("Pod %s in namespace %s could not be found on the node", name, namespace))
return nil, errdefs.NotFoundf("Pod %s in namespace %s could not be found on the node", name, namespace)
}
return createPodStatusFromCRI(pod), nil

4
providers/huawei/cci.go
View File

@@ -15,7 +15,7 @@ import (
"strings"
"time"
"github.com/cpuguy83/strongerrors"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
"github.com/virtual-kubelet/virtual-kubelet/manager"
"github.com/virtual-kubelet/virtual-kubelet/providers/huawei/auth"
"github.com/virtual-kubelet/virtual-kubelet/vkubelet/api"
@@ -257,7 +257,7 @@ func errorFromResponse(resp *http.Response) error {
switch resp.StatusCode {
case http.StatusNotFound:
return strongerrors.NotFound(err)
return errdefs.AsNotFound(err)
default:
return err
}

9
providers/mock/mock.go
View File

@@ -10,8 +10,7 @@ import (
"strings"
"time"
"github.com/cpuguy83/strongerrors"
"github.com/cpuguy83/strongerrors/status/ocstatus"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
"github.com/virtual-kubelet/virtual-kubelet/log"
"github.com/virtual-kubelet/virtual-kubelet/trace"
"github.com/virtual-kubelet/virtual-kubelet/vkubelet/api"
@@ -189,7 +188,7 @@ func (p *MockProvider) DeletePod(ctx context.Context, pod *v1.Pod) (err error) {
}
if _, exists := p.pods[key]; !exists {
return strongerrors.NotFound(fmt.Errorf("pod not found"))
return errdefs.NotFound("pod not found")
}
delete(p.pods, key)
@@ -201,7 +200,7 @@ func (p *MockProvider) DeletePod(ctx context.Context, pod *v1.Pod) (err error) {
func (p *MockProvider) GetPod(ctx context.Context, namespace, name string) (pod *v1.Pod, err error) {
ctx, span := trace.StartSpan(ctx, "GetPod")
defer func() {
span.SetStatus(ocstatus.FromError(err))
span.SetStatus(err)
span.End()
}()
@@ -218,7 +217,7 @@ func (p *MockProvider) GetPod(ctx context.Context, namespace, name string) (pod
if pod, ok := p.pods[key]; ok {
return pod, nil
}
return nil, strongerrors.NotFound(fmt.Errorf("pod \"%s/%s\" is not known to the provider", namespace, name))
return nil, errdefs.NotFoundf("pod \"%s/%s\" is not known to the provider", namespace, name)
}
// GetContainerLogs retrieves the logs of a container by name from the provider.

4
providers/provider.go
View File

@@ -11,6 +11,10 @@ import (
)
// Provider contains the methods required to implement a virtual-kubelet provider.
//
// Errors produced by these methods should implement an interface from
// github.com/virtual-kubelet/virtual-kubelet/errdefs package in order for the
// core logic to be able to understand the type of failure.
type Provider interface {
vkubelet.PodLifecycleHandler

5
providers/register/register.go
View File

@@ -3,8 +3,7 @@ package register
import (
"sort"
"github.com/cpuguy83/strongerrors"
"github.com/pkg/errors"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
"github.com/virtual-kubelet/virtual-kubelet/manager"
"github.com/virtual-kubelet/virtual-kubelet/providers"
)
@@ -27,7 +26,7 @@ type initFunc func(InitConfig) (providers.Provider, error)
func GetProvider(name string, cfg InitConfig) (providers.Provider, error) {
f, ok := providerInits[name]
if !ok {
return nil, strongerrors.NotFound(errors.Errorf("provider not found: %s", name))
return nil, errdefs.NotFoundf("provider not found: %s", name)
}
return f(cfg)
}

4
providers/web/broker.go
View File

@@ -29,7 +29,7 @@ import (
"time"
"github.com/cenkalti/backoff"
"github.com/cpuguy83/strongerrors"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
"github.com/virtual-kubelet/virtual-kubelet/vkubelet/api"
v1 "k8s.io/api/core/v1"
)
@@ -292,7 +292,7 @@ func checkResponseStatus(r *http.Response, err error) error {
if r.StatusCode < 200 || r.StatusCode > 299 {
switch r.StatusCode {
case http.StatusNotFound:
return strongerrors.NotFound(errors.New(r.Status))
return errdefs.NotFound(r.Status)
default:
return errors.New(r.Status)
}

7
trace/nop.go
View File

@@ -4,7 +4,6 @@ import (
"context"
"github.com/virtual-kubelet/virtual-kubelet/log"
"go.opencensus.io/trace"
)
type nopTracer struct{}
@@ -15,9 +14,9 @@ func (nopTracer) StartSpan(ctx context.Context, _ string) (context.Context, Span
type nopSpan struct{}
func (nopSpan) End() {}
func (nopSpan) SetStatus(trace.Status) {}
func (nopSpan) Logger() log.Logger { return nil }
func (nopSpan) End() {}
func (nopSpan) SetStatus(error) {}
func (nopSpan) Logger() log.Logger { return nil }
func (nopSpan) WithField(ctx context.Context, _ string, _ interface{}) context.Context { return ctx }
func (nopSpan) WithFields(ctx context.Context, _ log.Fields) context.Context { return ctx }

7
trace/opencensus/ocagent.go
View File

@@ -6,8 +6,7 @@ import (
"os"
"contrib.go.opencensus.io/exporter/ocagent"
"github.com/cpuguy83/strongerrors"
"github.com/pkg/errors"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
"go.opencensus.io/trace"
)
@@ -22,7 +21,7 @@ func NewOCAgentExporter(opts TracingExporterOptions) (trace.Exporter, error) {
if endpoint := os.Getenv("OCAGENT_ENDPOINT"); endpoint != "" {
agentOpts = append(agentOpts, ocagent.WithAddress(endpoint))
} else {
return nil, strongerrors.InvalidArgument(errors.New("must set endpoint address in OCAGENT_ENDPOINT"))
return nil, errdefs.InvalidInput("must set endpoint address in OCAGENT_ENDPOINT")
}
switch os.Getenv("OCAGENT_INSECURE") {
@@ -30,7 +29,7 @@ func NewOCAgentExporter(opts TracingExporterOptions) (trace.Exporter, error) {
case "1", "yes", "y", "on":
agentOpts = append(agentOpts, ocagent.WithInsecure())
default:
return nil, strongerrors.InvalidArgument(errors.New("invalid value for OCAGENT_INSECURE"))
return nil, errdefs.InvalidInput("invalid value for OCAGENT_INSECURE")
}
return ocagent.NewExporter(agentOpts...)

26
trace/opencensus/opencensus.go
View File

@@ -9,6 +9,7 @@ import (
"fmt"
"sync"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
"github.com/virtual-kubelet/virtual-kubelet/log"
"github.com/virtual-kubelet/virtual-kubelet/trace"
octrace "go.opencensus.io/trace"
@@ -46,7 +47,30 @@ func (s *span) End() {
s.s.End()
}
func (s *span) SetStatus(status trace.Status) {
func (s *span) SetStatus(err error) {
if !s.s.IsRecordingEvents() {
return
}
var status octrace.Status
if err == nil {
status.Code = octrace.StatusCodeOK
s.s.SetStatus(status)
return
}
switch {
case errdefs.IsNotFound(err):
status.Code = octrace.StatusCodeNotFound
case errdefs.IsInvalidInput(err):
status.Code = octrace.StatusCodeInvalidArgument
// TODO: other error types
default:
status.Code = octrace.StatusCodeUnknown
}
status.Message = err.Error()
s.s.SetStatus(status)
}

5
trace/opencensus/register.go
View File

@@ -1,8 +1,7 @@
package opencensus
import (
"github.com/cpuguy83/strongerrors"
"github.com/pkg/errors"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
"go.opencensus.io/trace"
)
@@ -30,7 +29,7 @@ func RegisterTracingExporter(name string, f TracingExporterInitFunc) {
func GetTracingExporter(name string, opts TracingExporterOptions) (trace.Exporter, error) {
f, ok := tracingExporters[name]
if !ok {
return nil, strongerrors.NotFound(errors.Errorf("tracing exporter %q not found", name))
return nil, errdefs.NotFoundf("tracing exporter %q not found", name)
}
return f(opts)
}

5
trace/opencensus/register_test.go
View File

@@ -3,8 +3,7 @@ package opencensus
import (
"testing"
"github.com/cpuguy83/strongerrors"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
"go.opencensus.io/trace"
)
@@ -16,7 +15,7 @@ func TestGetTracingExporter(t *testing.T) {
}
_, err := GetTracingExporter("notexist", TracingExporterOptions{})
if !strongerrors.IsNotFound(err) {
if !errdefs.IsNotFound(err) {
t.Fatalf("expected not found error, got: %v", err)
}

15
trace/trace.go
View File

@@ -9,15 +9,8 @@ import (
"context"
"github.com/virtual-kubelet/virtual-kubelet/log"
"go.opencensus.io/trace"
)
// Status is an alias to opencensus's trace status.
// The main reason we use this instead of implementing our own is library re-use,
// namely for converting an error to a tracing status.
// In the future this may be defined completely in this package.
type Status = trace.Status
// Tracer is the interface used for creating a tracing span
type Tracer interface {
// StartSpan starts a new span. The span details are emebedded into the returned
@@ -41,7 +34,13 @@ func StartSpan(ctx context.Context, name string) (context.Context, Span) {
// Span encapsulates a tracing event
type Span interface {
End()
SetStatus(Status)
// SetStatus sets the final status of the span.
// errors passed to this should use interfaces defined in
// github.com/virtual-kubelet/virtual-kubelet/errdefs
//
// If the error is nil, the span should be considered successful.
SetStatus(err error)
// WithField and WithFields adds attributes to an entire span
//

201
vendor/github.com/cpuguy83/strongerrors/LICENSE generated vendored
View File

@@ -1,201 +0,0 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
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otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
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not limited to compiled object code, generated documentation,
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"Work" shall mean the work of authorship, whether in Source or
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

84
vendor/github.com/cpuguy83/strongerrors/defs.go generated vendored
View File

@@ -1,84 +0,0 @@
package strongerrors
// ErrNotFound signals that the requested object doesn't exist
type ErrNotFound interface {
NotFound()
}
// ErrInvalidArgument signals that the user input is invalid
type ErrInvalidArgument interface {
InvalidArgument()
}
// ErrConflict signals that some internal state conflicts with the requested action and can't be performed.
// A change in state should be able to clear this error.
type ErrConflict interface {
Conflict()
}
// ErrUnauthorized is used to signify that the user is not authorized to perform a specific action
type ErrUnauthorized interface {
Unauthorized()
}
// ErrUnauthenticated is used to indicate that the caller cannot be identified.
type ErrUnauthenticated interface {
Unauthenticated()
}
// ErrUnavailable signals that the requested action/subsystem is not available.
type ErrUnavailable interface {
Unavailable()
}
// ErrForbidden signals that the requested action cannot be performed under any circumstances.
// When a ErrForbidden is returned, the caller should never retry the action.
type ErrForbidden interface {
Forbidden()
}
// ErrSystem signals that some internal error occurred.
// An example of this would be a failed mount request.
type ErrSystem interface {
System()
}
// ErrNotModified signals that an action can't be performed because it's already in the desired state
type ErrNotModified interface {
NotModified()
}
// ErrAlreadyExists is a special case of ErrNotModified which signals that the desired object already exists
type ErrAlreadyExists interface {
AlreadyExists()
}
// ErrNotImplemented signals that the requested action/feature is not implemented on the system as configured.
type ErrNotImplemented interface {
NotImplemented()
}
// ErrUnknown signals that the kind of error that occurred is not known.
type ErrUnknown interface {
Unknown()
}
// ErrCancelled signals that the action was cancelled.
type ErrCancelled interface {
Cancelled()
}
// ErrDeadline signals that the deadline was reached before the action completed.
type ErrDeadline interface {
DeadlineExceeded()
}
// ErrExhausted indicates that the action cannot be performed because some resource is exhausted.
type ErrExhausted interface {
Exhausted()
}
// ErrDataLoss indicates that data was lost or there is data corruption.
type ErrDataLoss interface {
DataLoss()
}

12
vendor/github.com/cpuguy83/strongerrors/doc.go generated vendored
View File

@@ -1,12 +0,0 @@
// Package strongerrors defines a set of error interfaces that packages should use for communicating classes of errors.
// Errors that cross the package boundary should implement one (and only one) of these interfaces.
//
// Packages should not reference these interfaces directly, only implement them.
// To check if a particular error implements one of these interfaces, there are helper
// functions provided (e.g. `Is<SomeError>`) which can be used rather than asserting the interfaces directly.
// If you must assert on these interfaces, be sure to check the causal chain (`err.Cause()`).
//
// A set of helper functions are provided to take any error and turn it into a specific error class.
// This frees you from defining the same error classes all over your code. However, you can still
// implement the error classes ony our own if you desire.
package strongerrors

272
vendor/github.com/cpuguy83/strongerrors/helpers.go generated vendored
View File

@@ -1,272 +0,0 @@
package strongerrors
import "context"
type errNotFound struct{ error }
func (errNotFound) NotFound() {}
func (e errNotFound) Cause() error {
return e.error
}
// NotFound is a helper to create an error of the class with the same name from any error type
func NotFound(err error) error {
if err == nil {
return nil
}
return errNotFound{err}
}
type errInvalidArg struct{ error }
func (errInvalidArg) InvalidArgument() {}
func (e errInvalidArg) Cause() error {
return e.error
}
// InvalidArgument is a helper to create an error of the class with the same name from any error type
func InvalidArgument(err error) error {
if err == nil {
return nil
}
return errInvalidArg{err}
}
type errConflict struct{ error }
func (errConflict) Conflict() {}
func (e errConflict) Cause() error {
return e.error
}
// Conflict is a helper to create an error of the class with the same name from any error type
func Conflict(err error) error {
if err == nil {
return nil
}
return errConflict{err}
}
type errUnauthorized struct{ error }
func (errUnauthorized) Unauthorized() {}
func (e errUnauthorized) Cause() error {
return e.error
}
// Unauthorized is a helper to create an error of the class with the same name from any error type
func Unauthorized(err error) error {
if err == nil {
return nil
}
return errUnauthorized{err}
}
type errUnauthenticated struct{ error }
func (errUnauthenticated) Unauthenticated() {}
func (e errUnauthenticated) Cause() error {
return e.error
}
// Unauthenticated is a helper to create an error of the class with the same name from any error type
func Unauthenticated(err error) error {
if err == nil {
return nil
}
return errUnauthenticated{err}
}
type errUnavailable struct{ error }
func (errUnavailable) Unavailable() {}
func (e errUnavailable) Cause() error {
return e.error
}
// Unavailable is a helper to create an error of the class with the same name from any error type
func Unavailable(err error) error {
return errUnavailable{err}
}
type errForbidden struct{ error }
func (errForbidden) Forbidden() {}
func (e errForbidden) Cause() error {
return e.error
}
// Forbidden is a helper to create an error of the class with the same name from any error type
func Forbidden(err error) error {
if err == nil {
return nil
}
return errForbidden{err}
}
type errSystem struct{ error }
func (errSystem) System() {}
func (e errSystem) Cause() error {
return e.error
}
// System is a helper to create an error of the class with the same name from any error type
func System(err error) error {
if err == nil {
return nil
}
return errSystem{err}
}
type errNotModified struct{ error }
func (errNotModified) NotModified() {}
func (e errNotModified) Cause() error {
return e.error
}
// NotModified is a helper to create an error of the class with the same name from any error type
func NotModified(err error) error {
if err == nil {
return nil
}
return errNotModified{err}
}
type errAlreadyExists struct{ error }
func (errAlreadyExists) AlreadyExists() {}
func (e errAlreadyExists) Cause() error {
return e.error
}
// AlreadyExists is a helper to create an error of the class with the same name from any error type
func AlreadyExists(err error) error {
if err == nil {
return nil
}
return errAlreadyExists{err}
}
type errNotImplemented struct{ error }
func (errNotImplemented) NotImplemented() {}
func (e errNotImplemented) Cause() error {
return e.error
}
// NotImplemented is a helper to create an error of the class with the same name from any error type
func NotImplemented(err error) error {
if err == nil {
return nil
}
return errNotImplemented{err}
}
type errUnknown struct{ error }
func (errUnknown) Unknown() {}
func (e errUnknown) Cause() error {
return e.error
}
// Unknown is a helper to create an error of the class with the same name from any error type
func Unknown(err error) error {
if err == nil {
return nil
}
return errUnknown{err}
}
type errCancelled struct{ error }
func (errCancelled) Cancelled() {}
func (e errCancelled) Cause() error {
return e.error
}
// Cancelled is a helper to create an error of the class with the same name from any error type
func Cancelled(err error) error {
if err == nil {
return nil
}
return errCancelled{err}
}
type errDeadline struct{ error }
func (errDeadline) DeadlineExceeded() {}
func (e errDeadline) Cause() error {
return e.error
}
// Deadline is a helper to create an error of the class with the same name from any error type
func Deadline(err error) error {
if err == nil {
return nil
}
return errDeadline{err}
}
type errExhausted struct{ error }
func (errExhausted) Exhausted() {}
func (e errExhausted) Cause() error {
return e.error
}
// Exhausted is a helper to create an error of the class with the same name from any error type
func Exhausted(err error) error {
if err == nil {
return nil
}
return errExhausted{err}
}
type errDataLoss struct{ error }
func (errDataLoss) DataLoss() {}
func (e errDataLoss) Cause() error {
return e.error
}
// DataLoss is a helper to create an error of the class with the same name from any error type
func DataLoss(err error) error {
if err == nil {
return nil
}
return errDataLoss{err}
}
// FromContext returns the error class from the passed in context
func FromContext(ctx context.Context) error {
e := ctx.Err()
if e == nil {
return nil
}
if e == context.Canceled {
return Cancelled(e)
}
if e == context.DeadlineExceeded {
return Deadline(e)
}
return Unknown(e)
}

128
vendor/github.com/cpuguy83/strongerrors/is.go generated vendored
View File

@@ -1,128 +0,0 @@
package strongerrors
type causer interface {
Cause() error
}
func getImplementer(err error) error {
switch e := err.(type) {
case
ErrNotFound,
ErrInvalidArgument,
ErrConflict,
ErrUnauthorized,
ErrUnauthenticated,
ErrUnavailable,
ErrForbidden,
ErrSystem,
ErrNotModified,
ErrAlreadyExists,
ErrNotImplemented,
ErrCancelled,
ErrDeadline,
ErrDataLoss,
ErrExhausted,
ErrUnknown:
return err
case causer:
return getImplementer(e.Cause())
default:
return err
}
}
// IsNotFound returns if the passed in error is an ErrNotFound
func IsNotFound(err error) bool {
_, ok := getImplementer(err).(ErrNotFound)
return ok
}
// IsInvalidArgument returns if the passed in error is an ErrInvalidParameter
func IsInvalidArgument(err error) bool {
_, ok := getImplementer(err).(ErrInvalidArgument)
return ok
}
// IsConflict returns if the passed in error is an ErrConflict
func IsConflict(err error) bool {
_, ok := getImplementer(err).(ErrConflict)
return ok
}
// IsUnauthorized returns if the the passed in error is an ErrUnauthorized
func IsUnauthorized(err error) bool {
_, ok := getImplementer(err).(ErrUnauthorized)
return ok
}
// IsUnauthenticated returns if the the passed in error is an ErrUnauthenticated
func IsUnauthenticated(err error) bool {
_, ok := getImplementer(err).(ErrUnauthenticated)
return ok
}
// IsUnavailable returns if the passed in error is an ErrUnavailable
func IsUnavailable(err error) bool {
_, ok := getImplementer(err).(ErrUnavailable)
return ok
}
// IsForbidden returns if the passed in error is an ErrForbidden
func IsForbidden(err error) bool {
_, ok := getImplementer(err).(ErrForbidden)
return ok
}
// IsSystem returns if the passed in error is an ErrSystem
func IsSystem(err error) bool {
_, ok := getImplementer(err).(ErrSystem)
return ok
}
// IsNotModified returns if the passed in error is a NotModified error
func IsNotModified(err error) bool {
_, ok := getImplementer(err).(ErrNotModified)
return ok
}
// IsAlreadyExists returns if the passed in error is a AlreadyExists error
func IsAlreadyExists(err error) bool {
_, ok := getImplementer(err).(ErrAlreadyExists)
return ok
}
// IsNotImplemented returns if the passed in error is an ErrNotImplemented
func IsNotImplemented(err error) bool {
_, ok := getImplementer(err).(ErrNotImplemented)
return ok
}
// IsUnknown returns if the passed in error is an ErrUnknown
func IsUnknown(err error) bool {
_, ok := getImplementer(err).(ErrUnknown)
return ok
}
// IsCancelled returns if the passed in error is an ErrCancelled
func IsCancelled(err error) bool {
_, ok := getImplementer(err).(ErrCancelled)
return ok
}
// IsDeadline returns if the passed in error is an ErrDeadline
func IsDeadline(err error) bool {
_, ok := getImplementer(err).(ErrDeadline)
return ok
}
// IsExhausted returns if the passed in error is an ErrDeadline
func IsExhausted(err error) bool {
_, ok := getImplementer(err).(ErrExhausted)
return ok
}
// IsDataLoss returns if the passed in error is an ErrDataLoss
func IsDataLoss(err error) bool {
_, ok := getImplementer(err).(ErrDataLoss)
return ok
}

85
vendor/github.com/cpuguy83/strongerrors/status/grpc.go generated vendored
View File

@@ -1,85 +0,0 @@
package status
import (
"github.com/cpuguy83/strongerrors"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
// FromGRPC returns an error class from the provided GPRC status
// If the status is nil or OK, this will return nil
// nolint: gocyclo
func FromGRPC(s *status.Status) error {
if s == nil || s.Code() == codes.OK {
return nil
}
switch s.Code() {
case codes.InvalidArgument:
return strongerrors.InvalidArgument(s.Err())
case codes.NotFound:
return strongerrors.NotFound(s.Err())
case codes.Unimplemented:
return strongerrors.NotImplemented(s.Err())
case codes.DeadlineExceeded:
return strongerrors.Deadline(s.Err())
case codes.Canceled:
return strongerrors.Cancelled(s.Err())
case codes.AlreadyExists:
return strongerrors.AlreadyExists(s.Err())
case codes.PermissionDenied:
return strongerrors.Unauthorized(s.Err())
case codes.Unauthenticated:
return strongerrors.Unauthenticated(s.Err())
// TODO(cpuguy83): consider more granular errors for these cases
case codes.FailedPrecondition, codes.Aborted, codes.Unavailable, codes.OutOfRange:
return strongerrors.Conflict(s.Err())
case codes.ResourceExhausted:
return strongerrors.Exhausted(s.Err())
case codes.DataLoss:
return strongerrors.DataLoss(s.Err())
default:
return strongerrors.Unknown(s.Err())
}
}
// ToGRPC takes the passed in error and converts it to a GRPC status error
// If the passed in error is already a gprc status error, then it is returned unmodified
// If the passed in error is nil, then a nil error is returned.
// nolint: gocyclo
func ToGRPC(err error) error {
if _, ok := status.FromError(err); ok {
return err
}
switch {
case strongerrors.IsNotFound(err):
return status.Error(codes.NotFound, err.Error())
case strongerrors.IsConflict(err), strongerrors.IsNotModified(err):
return status.Error(codes.FailedPrecondition, err.Error())
case strongerrors.IsInvalidArgument(err):
return status.Error(codes.InvalidArgument, err.Error())
case strongerrors.IsAlreadyExists(err):
return status.Error(codes.AlreadyExists, err.Error())
case strongerrors.IsCancelled(err):
return status.Error(codes.Canceled, err.Error())
case strongerrors.IsDeadline(err):
return status.Error(codes.DeadlineExceeded, err.Error())
case strongerrors.IsUnauthorized(err):
return status.Error(codes.PermissionDenied, err.Error())
case strongerrors.IsUnauthenticated(err):
return status.Error(codes.Unauthenticated, err.Error())
case strongerrors.IsForbidden(err), strongerrors.IsNotImplemented(err):
return status.Error(codes.Unimplemented, err.Error())
case strongerrors.IsExhausted(err):
return status.Error(codes.ResourceExhausted, err.Error())
case strongerrors.IsDataLoss(err):
return status.Error(codes.DataLoss, err.Error())
case strongerrors.IsSystem(err):
return status.Error(codes.Internal, err.Error())
case strongerrors.IsUnavailable(err):
return status.Error(codes.Unavailable, err.Error())
default:
return status.Error(codes.Unknown, err.Error())
}
}

37
vendor/github.com/cpuguy83/strongerrors/status/http.go generated vendored
View File

@@ -1,37 +0,0 @@
package status
import (
"net/http"
"github.com/cpuguy83/strongerrors"
)
// HTTPCode takes an error and returns the HTTP status code for the given error
// If a match is found then the second return argument will be true, otherwise it will be false.
// nolint: gocyclo
func HTTPCode(err error) (int, bool) {
switch {
case strongerrors.IsNotFound(err):
return http.StatusNotFound, true
case strongerrors.IsInvalidArgument(err):
return http.StatusBadRequest, true
case strongerrors.IsConflict(err):
return http.StatusConflict, true
case strongerrors.IsUnauthenticated(err), strongerrors.IsForbidden(err):
return http.StatusForbidden, true
case strongerrors.IsUnauthorized(err):
return http.StatusUnauthorized, true
case strongerrors.IsUnavailable(err):
return http.StatusServiceUnavailable, true
case strongerrors.IsForbidden(err):
return http.StatusForbidden, true
case strongerrors.IsAlreadyExists(err), strongerrors.IsNotModified(err):
return http.StatusNotModified, true
case strongerrors.IsNotImplemented(err):
return http.StatusNotImplemented, true
case strongerrors.IsSystem(err) || strongerrors.IsUnknown(err) || strongerrors.IsDataLoss(err) || strongerrors.IsExhausted(err):
return http.StatusInternalServerError, true
default:
return http.StatusInternalServerError, false
}
}

49
vendor/github.com/cpuguy83/strongerrors/status/ocstatus/status.go generated vendored
View File

@@ -1,49 +0,0 @@
// Package ocstatus provides error status conversions to opencencus status trace.StatusCode
package ocstatus
import (
"github.com/cpuguy83/strongerrors"
"go.opencensus.io/trace"
)
// FromError makes an opencencus trace.Status from the passed in error.
func FromError(err error) trace.Status {
if err == nil {
return trace.Status{Code: trace.StatusCodeOK}
}
switch {
case strongerrors.IsNotFound(err):
return status(trace.StatusCodeNotFound, err)
case strongerrors.IsConflict(err), strongerrors.IsNotModified(err):
return status(trace.StatusCodeFailedPrecondition, err)
case strongerrors.IsInvalidArgument(err):
return status(trace.StatusCodeInvalidArgument, err)
case strongerrors.IsAlreadyExists(err):
return status(trace.StatusCodeAlreadyExists, err)
case strongerrors.IsCancelled(err):
return status(trace.StatusCodeCancelled, err)
case strongerrors.IsDeadline(err):
return status(trace.StatusCodeDeadlineExceeded, err)
case strongerrors.IsUnauthorized(err):
return status(trace.StatusCodePermissionDenied, err)
case strongerrors.IsUnauthenticated(err):
return status(trace.StatusCodeUnauthenticated, err)
case strongerrors.IsForbidden(err), strongerrors.IsNotImplemented(err):
return status(trace.StatusCodeUnimplemented, err)
case strongerrors.IsExhausted(err):
return status(trace.StatusCodeResourceExhausted, err)
case strongerrors.IsDataLoss(err):
return status(trace.StatusCodeDataLoss, err)
case strongerrors.IsSystem(err):
return status(trace.StatusCodeInternal, err)
case strongerrors.IsUnavailable(err):
return status(trace.StatusCodeUnavailable, err)
default:
return status(trace.StatusCodeUnknown, err)
}
}
func status(code int32, err error) trace.Status {
return trace.Status{Code: code, Message: err.Error()}
}

4
vkubelet/api/exec.go
View File

@@ -7,9 +7,9 @@ import (
"strings"
"time"
"github.com/cpuguy83/strongerrors"
"github.com/gorilla/mux"
"github.com/pkg/errors"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
"k8s.io/apimachinery/pkg/types"
remoteutils "k8s.io/client-go/tools/remotecommand"
api "k8s.io/kubernetes/pkg/apis/core"
@@ -56,7 +56,7 @@ func HandleContainerExec(h ContainerExecHandlerFunc) http.HandlerFunc {
streamOpts, err := getExecOptions(req)
if err != nil {
return strongerrors.InvalidArgument(err)
return errdefs.AsInvalidInput(err)
}
idleTimeout := time.Second * 30

17
vkubelet/api/helpers.go
View File

@@ -4,7 +4,7 @@ import (
"io"
"net/http"
"github.com/cpuguy83/strongerrors/status"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
"github.com/virtual-kubelet/virtual-kubelet/log"
)
@@ -17,7 +17,7 @@ func handleError(f handlerFunc) http.HandlerFunc {
return
}
code, _ := status.HTTPCode(err)
code := httpStatusCode(err)
w.WriteHeader(code)
io.WriteString(w, err.Error())
logger := log.G(req.Context()).WithError(err).WithField("httpStatusCode", code)
@@ -55,3 +55,16 @@ func (fw *flushWriter) Write(p []byte) (int, error) {
}
return n, err
}
func httpStatusCode(err error) int {
switch {
case err == nil:
return http.StatusOK
case errdefs.IsNotFound(err):
return http.StatusNotFound
case errdefs.IsInvalidInput(err):
return http.StatusBadRequest
default:
return http.StatusInternalServerError
}
}

8
vkubelet/api/logs.go
View File

@@ -7,9 +7,9 @@ import (
"strconv"
"time"
"github.com/cpuguy83/strongerrors"
"github.com/gorilla/mux"
"github.com/pkg/errors"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
"github.com/virtual-kubelet/virtual-kubelet/log"
)
@@ -33,7 +33,7 @@ func HandleContainerLogs(h ContainerLogsHandlerFunc) http.HandlerFunc {
return handleError(func(w http.ResponseWriter, req *http.Request) error {
vars := mux.Vars(req)
if len(vars) != 3 {
return strongerrors.NotFound(errors.New("not found"))
return errdefs.NotFound("not found")
}
ctx := req.Context()
@@ -47,7 +47,7 @@ func HandleContainerLogs(h ContainerLogsHandlerFunc) http.HandlerFunc {
if queryTail := q.Get("tailLines"); queryTail != "" {
t, err := strconv.Atoi(queryTail)
if err != nil {
return strongerrors.InvalidArgument(errors.Wrap(err, "could not parse \"tailLines\""))
return errdefs.AsInvalidInput(errors.Wrap(err, "could not parse \"tailLines\""))
}
tail = t
}
@@ -73,7 +73,7 @@ func HandleContainerLogs(h ContainerLogsHandlerFunc) http.HandlerFunc {
}
if _, err := io.Copy(flushOnWrite(w), logs); err != nil {
return strongerrors.Unknown(errors.Wrap(err, "error writing response to client"))
return errors.Wrap(err, "error writing response to client")
}
return nil
})

5
vkubelet/api/pods.go
View File

@@ -4,7 +4,6 @@ import (
"context"
"net/http"
"github.com/cpuguy83/strongerrors"
"github.com/virtual-kubelet/virtual-kubelet/log"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/runtime"
@@ -36,13 +35,13 @@ func HandleRunningPods(getPods PodListerFunc) http.HandlerFunc {
codec := codecs.LegacyCodec(v1.SchemeGroupVersion)
data, err := runtime.Encode(codec, podList)
if err != nil {
return strongerrors.System(err)
return err
}
w.Header().Set("Content-Type", "application/json")
_, err = w.Write(data)
if err != nil {
return strongerrors.System(err)
return err
}
return nil
})

25
vkubelet/api/stats.go
View File

@@ -5,7 +5,6 @@ import (
"encoding/json"
"net/http"
"github.com/cpuguy83/strongerrors"
"github.com/pkg/errors"
stats "k8s.io/kubernetes/pkg/kubelet/apis/stats/v1alpha1"
)
@@ -21,20 +20,36 @@ func HandlePodStatsSummary(h PodStatsSummaryHandlerFunc) http.HandlerFunc {
return handleError(func(w http.ResponseWriter, req *http.Request) error {
stats, err := h(req.Context())
if err != nil {
if errors.Cause(err) == context.Canceled {
return strongerrors.Cancelled(err)
if isCancelled(err) {
return err
}
return errors.Wrap(err, "error getting status from provider")
}
b, err := json.Marshal(stats)
if err != nil {
return strongerrors.Unknown(errors.Wrap(err, "error marshalling stats"))
return errors.Wrap(err, "error marshalling stats")
}
if _, err := w.Write(b); err != nil {
return strongerrors.Unknown(errors.Wrap(err, "could not write to client"))
return errors.Wrap(err, "could not write to client")
}
return nil
})
}
func isCancelled(err error) bool {
if err == context.Canceled {
return true
}
if e, ok := err.(causal); ok {
return isCancelled(e.Cause())
}
return false
}
type causal interface {
Cause() error
error
}

7
vkubelet/node.go
View File

@@ -6,7 +6,6 @@ import (
"fmt"
"time"
"github.com/cpuguy83/strongerrors/status/ocstatus"
pkgerrors "github.com/pkg/errors"
"github.com/virtual-kubelet/virtual-kubelet/log"
"github.com/virtual-kubelet/virtual-kubelet/trace"
@@ -275,7 +274,7 @@ func (n *Node) handlePing(ctx context.Context) (retErr error) {
ctx, span := trace.StartSpan(ctx, "node.handlePing")
defer span.End()
defer func() {
span.SetStatus(ocstatus.FromError(retErr))
span.SetStatus(retErr)
}()
if err := n.p.Ping(ctx); err != nil {
@@ -367,7 +366,7 @@ func UpdateNodeLease(ctx context.Context, leases v1beta1.LeaseInterface, lease *
l, err = ensureLease(ctx, leases, lease)
}
if err != nil {
span.SetStatus(ocstatus.FromError(err))
span.SetStatus(err)
return nil, err
}
log.G(ctx).Debug("created new lease")
@@ -429,7 +428,7 @@ func UpdateNodeStatus(ctx context.Context, nodes v1.NodeInterface, n *corev1.Nod
ctx, span := trace.StartSpan(ctx, "UpdateNodeStatus")
defer func() {
span.End()
span.SetStatus(ocstatus.FromError(retErr))
span.SetStatus(retErr)
}()
var node *corev1.Node

19
vkubelet/pod.go
View File

@@ -5,7 +5,6 @@ import (
"hash/fnv"
"time"
"github.com/cpuguy83/strongerrors/status/ocstatus"
"github.com/davecgh/go-spew/spew"
pkgerrors "github.com/pkg/errors"
"github.com/virtual-kubelet/virtual-kubelet/log"
@@ -44,7 +43,7 @@ func (pc *PodController) createOrUpdatePod(ctx context.Context, pod *corev1.Pod)
})
if err := populateEnvironmentVariables(ctx, pod, pc.resourceManager, pc.recorder); err != nil {
span.SetStatus(ocstatus.FromError(err))
span.SetStatus(err)
return err
}
@@ -113,7 +112,7 @@ func (pc *PodController) handleProviderError(ctx context.Context, span trace.Spa
} else {
logger.Info("Updated k8s pod status")
}
span.SetStatus(ocstatus.FromError(origErr))
span.SetStatus(origErr)
}
func (pc *PodController) deletePod(ctx context.Context, namespace, name string) error {
@@ -132,7 +131,7 @@ func (pc *PodController) deletePod(ctx context.Context, namespace, name string)
var delErr error
if delErr = pc.provider.DeletePod(ctx, pod); delErr != nil && errors.IsNotFound(delErr) {
span.SetStatus(ocstatus.FromError(delErr))
span.SetStatus(delErr)
return delErr
}
@@ -140,7 +139,7 @@ func (pc *PodController) deletePod(ctx context.Context, namespace, name string)
if !errors.IsNotFound(delErr) {
if err := pc.forceDeletePodResource(ctx, namespace, name); err != nil {
span.SetStatus(ocstatus.FromError(err))
span.SetStatus(err)
return err
}
log.G(ctx).Info("Deleted pod from Kubernetes")
@@ -163,7 +162,7 @@ func (pc *PodController) forceDeletePodResource(ctx context.Context, namespace,
log.G(ctx).Debug("Pod does not exist in Kubernetes, nothing to delete")
return nil
}
span.SetStatus(ocstatus.FromError(err))
span.SetStatus(err)
return pkgerrors.Wrap(err, "Failed to delete Kubernetes pod")
}
return nil
@@ -178,7 +177,7 @@ func (pc *PodController) updatePodStatuses(ctx context.Context, q workqueue.Rate
pods, err := pc.podsLister.List(labels.Everything())
if err != nil {
err = pkgerrors.Wrap(err, "error getting pod list")
span.SetStatus(ocstatus.FromError(err))
span.SetStatus(err)
log.G(ctx).WithError(err).Error("Error updating pod statuses")
return
}
@@ -208,7 +207,7 @@ func (pc *PodController) updatePodStatus(ctx context.Context, pod *corev1.Pod) e
status, err := pc.provider.GetPodStatus(ctx, pod.Namespace, pod.Name)
if err != nil {
span.SetStatus(ocstatus.FromError(err))
span.SetStatus(err)
return pkgerrors.Wrap(err, "error retreiving pod status")
}
@@ -238,7 +237,7 @@ func (pc *PodController) updatePodStatus(ctx context.Context, pod *corev1.Pod) e
}
if _, err := pc.client.Pods(pod.Namespace).UpdateStatus(pod); err != nil {
span.SetStatus(ocstatus.FromError(err))
span.SetStatus(err)
return pkgerrors.Wrap(err, "error while updating pod status in kubernetes")
}
@@ -265,7 +264,7 @@ func (pc *PodController) podStatusHandler(ctx context.Context, key string) (retE
ctx = span.WithField(ctx, "key", key)
log.G(ctx).Debug("processing pod status update")
defer func() {
span.SetStatus(ocstatus.FromError(retErr))
span.SetStatus(retErr)
if retErr != nil {
log.G(ctx).WithError(retErr).Error("Error processing pod status update")
}

7
vkubelet/pod_test.go
View File

@@ -5,8 +5,7 @@ import (
"path"
"testing"
"github.com/cpuguy83/strongerrors"
pkgerrors "github.com/pkg/errors"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
testutil "github.com/virtual-kubelet/virtual-kubelet/test/util"
"gotest.tools/assert"
is "gotest.tools/assert/cmp"
@@ -37,7 +36,7 @@ func (m *mockProvider) UpdatePod(ctx context.Context, pod *corev1.Pod) error {
func (m *mockProvider) GetPod(ctx context.Context, namespace, name string) (*corev1.Pod, error) {
p := m.pods[path.Join(namespace, name)]
if p == nil {
return nil, strongerrors.NotFound(pkgerrors.New("not found"))
return nil, errdefs.NotFound("not found")
}
return p, nil
}
@@ -45,7 +44,7 @@ func (m *mockProvider) GetPod(ctx context.Context, namespace, name string) (*cor
func (m *mockProvider) GetPodStatus(ctx context.Context, namespace, name string) (*corev1.PodStatus, error) {
p := m.pods[path.Join(namespace, name)]
if p == nil {
return nil, strongerrors.NotFound(pkgerrors.New("not found"))
return nil, errdefs.NotFound("not found")
}
return &p.Status, nil
}

27
vkubelet/podcontroller.go
View File

@@ -22,9 +22,8 @@ import (
"sync"
"time"
"github.com/cpuguy83/strongerrors"
"github.com/cpuguy83/strongerrors/status/ocstatus"
pkgerrors "github.com/pkg/errors"
"github.com/virtual-kubelet/virtual-kubelet/errdefs"
"github.com/virtual-kubelet/virtual-kubelet/log"
"github.com/virtual-kubelet/virtual-kubelet/manager"
"github.com/virtual-kubelet/virtual-kubelet/trace"
@@ -41,6 +40,10 @@ import (
// PodLifecycleHandler defines the interface used by the PodController to react
// to new and changed pods scheduled to the node that is being managed.
//
// Errors produced by these methods should implement an interface from
// github.com/virtual-kubelet/virtual-kubelet/errdefs package in order for the
// core logic to be able to understand the type of failure.
type PodLifecycleHandler interface {
// CreatePod takes a Kubernetes Pod and deploys it within the provider.
CreatePod(ctx context.Context, pod *corev1.Pod) error
@@ -113,13 +116,13 @@ type PodControllerConfig struct {
func NewPodController(cfg PodControllerConfig) (*PodController, error) {
if cfg.PodClient == nil {
return nil, strongerrors.InvalidArgument(pkgerrors.New("must set core client"))
return nil, errdefs.InvalidInput("must set core client")
}
if cfg.EventRecorder == nil {
return nil, strongerrors.InvalidArgument(pkgerrors.New("must set event recorder"))
return nil, errdefs.InvalidInput("must set event recorder")
}
if cfg.PodInformer == nil {
return nil, strongerrors.InvalidArgument(pkgerrors.New("must set informer"))
return nil, errdefs.InvalidInput("must set informer")
}
return &PodController{
@@ -257,14 +260,14 @@ func (pc *PodController) syncHandler(ctx context.Context, key string) error {
// We've failed to fetch the pod from the lister, but the error is not a 404.
// Hence, we add the key back to the work queue so we can retry processing it later.
err := pkgerrors.Wrapf(err, "failed to fetch pod with key %q from lister", key)
span.SetStatus(ocstatus.FromError(err))
span.SetStatus(err)
return err
}
// At this point we know the Pod resource doesn't exist, which most probably means it was deleted.
// Hence, we must delete it from the provider if it still exists there.
if err := pc.deletePod(ctx, namespace, name); err != nil {
err := pkgerrors.Wrapf(err, "failed to delete pod %q in the provider", loggablePodNameFromCoordinates(namespace, name))
span.SetStatus(ocstatus.FromError(err))
span.SetStatus(err)
return err
}
return nil
@@ -286,7 +289,7 @@ func (pc *PodController) syncPodInProvider(ctx context.Context, pod *corev1.Pod)
if pod.DeletionTimestamp != nil {
if err := pc.deletePod(ctx, pod.Namespace, pod.Name); err != nil {
err := pkgerrors.Wrapf(err, "failed to delete pod %q in the provider", loggablePodName(pod))
span.SetStatus(ocstatus.FromError(err))
span.SetStatus(err)
return err
}
return nil
@@ -301,7 +304,7 @@ func (pc *PodController) syncPodInProvider(ctx context.Context, pod *corev1.Pod)
// Create or update the pod in the provider.
if err := pc.createOrUpdatePod(ctx, pod); err != nil {
err := pkgerrors.Wrapf(err, "failed to sync pod %q in the provider", loggablePodName(pod))
span.SetStatus(ocstatus.FromError(err))
span.SetStatus(err)
return err
}
return nil
@@ -316,7 +319,7 @@ func (pc *PodController) deleteDanglingPods(ctx context.Context, threadiness int
pps, err := pc.provider.GetPods(ctx)
if err != nil {
err := pkgerrors.Wrap(err, "failed to fetch the list of pods from the provider")
span.SetStatus(ocstatus.FromError(err))
span.SetStatus(err)
log.G(ctx).Error(err)
return
}
@@ -335,7 +338,7 @@ func (pc *PodController) deleteDanglingPods(ctx context.Context, threadiness int
}
// For some reason we couldn't fetch the pod from the lister, so we propagate the error.
err := pkgerrors.Wrap(err, "failed to fetch pod from the lister")
span.SetStatus(ocstatus.FromError(err))
span.SetStatus(err)
log.G(ctx).Error(err)
return
}
@@ -363,7 +366,7 @@ func (pc *PodController) deleteDanglingPods(ctx context.Context, threadiness int
ctx = addPodAttributes(ctx, span, pod)
// Actually delete the pod.
if err := pc.deletePod(ctx, pod.Namespace, pod.Name); err != nil {
span.SetStatus(ocstatus.FromError(err))
span.SetStatus(err)
log.G(ctx).Errorf("failed to delete pod %q in provider", loggablePodName(pod))
} else {
log.G(ctx).Infof("deleted leaked pod %q in provider", loggablePodName(pod))

3
vkubelet/queue.go
View File

@@ -5,7 +5,6 @@ import (
"strconv"
"time"
"github.com/cpuguy83/strongerrors/status/ocstatus"
pkgerrors "github.com/pkg/errors"
"github.com/virtual-kubelet/virtual-kubelet/log"
"github.com/virtual-kubelet/virtual-kubelet/trace"
@@ -71,7 +70,7 @@ func handleQueueItem(ctx context.Context, q workqueue.RateLimitingInterface, han
if err != nil {
// We've actually hit an error, so we set the span's status based on the error.
span.SetStatus(ocstatus.FromError(err))
span.SetStatus(err)
log.G(ctx).Error(err)
return true
}