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feat: use k8s cluster config when buildx used in k8s cluster #368

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merged 1 commit into from
Aug 29, 2020
Merged

feat: use k8s cluster config when buildx used in k8s cluster #368

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8 changes: 7 additions & 1 deletion commands/util.go
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Original file line number Diff line number Diff line change
Expand Up @@ -177,7 +177,9 @@ func driversForNodeGroup(ctx context.Context, dockerCli command.Cli, ng *store.N
dockerapi.NegotiateAPIVersion(ctx)

contextStore := dockerCli.ContextStore()
kcc, err := kubernetes.ConfigFromContext(n.Endpoint, contextStore)

var kcc driver.KubeClientConfig
kcc, err = kubernetes.ConfigFromContext(n.Endpoint, contextStore)
if err != nil {
// err is returned if n.Endpoint is non-context name like "unix:///var/run/docker.sock".
// try again with name="default".
Expand All @@ -187,6 +189,10 @@ func driversForNodeGroup(ctx context.Context, dockerCli command.Cli, ng *store.N
logrus.Error(err)
}
}
if kcc == nil {
kcc = driver.KubeClientConfigInCluster{}
}

d, err := driver.GetDriver(ctx, "buildx_buildkit_"+n.Name, f, dockerapi, kcc, n.Flags, n.ConfigFile, n.DriverOpts, contextPathHash)
if err != nil {
di.Err = err
Expand Down
28 changes: 25 additions & 3 deletions driver/manager.go
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Original file line number Diff line number Diff line change
Expand Up @@ -2,11 +2,14 @@ package driver

import (
"context"
"io/ioutil"
"sort"
"strings"

"k8s.io/client-go/rest"

dockerclient "github.com/docker/docker/client"
"github.com/pkg/errors"
"k8s.io/client-go/tools/clientcmd"
)

type Factory interface {
Expand All @@ -22,11 +25,30 @@ type BuildkitConfig struct {
// Rootless bool
}

type KubeClientConfig interface {
ClientConfig() (*rest.Config, error)
Namespace() (string, bool, error)
}

type KubeClientConfigInCluster struct{}

func (k KubeClientConfigInCluster) ClientConfig() (*rest.Config, error) {
return rest.InClusterConfig()
}

func (k KubeClientConfigInCluster) Namespace() (string, bool, error) {
namespace, err := ioutil.ReadFile("/var/run/secrets/kubernetes.io/serviceaccount/namespace")
if err != nil {
return "", false, err
}
return strings.TrimSpace(string(namespace)), true, nil
}

type InitConfig struct {
// This object needs updates to be generic for different drivers
Name string
DockerAPI dockerclient.APIClient
KubeClientConfig clientcmd.ClientConfig
KubeClientConfig KubeClientConfig
BuildkitFlags []string
ConfigFile string
DriverOpts map[string]string
Expand Down Expand Up @@ -76,7 +98,7 @@ func GetFactory(name string, instanceRequired bool) Factory {
return nil
}

func GetDriver(ctx context.Context, name string, f Factory, api dockerclient.APIClient, kcc clientcmd.ClientConfig, flags []string, config string, do map[string]string, contextPathHash string) (Driver, error) {
func GetDriver(ctx context.Context, name string, f Factory, api dockerclient.APIClient, kcc KubeClientConfig, flags []string, config string, do map[string]string, contextPathHash string) (Driver, error) {
ic := InitConfig{
DockerAPI: api,
KubeClientConfig: kcc,
Expand Down