/
env.go
126 lines (107 loc) · 3.39 KB
/
env.go
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package k8s
import (
"context"
"path/filepath"
"strings"
"github.com/mitchellh/go-homedir"
"github.com/pkg/errors"
"k8s.io/client-go/tools/clientcmd"
"k8s.io/client-go/tools/clientcmd/api"
"github.com/windmilleng/tilt/internal/ospath"
"github.com/windmilleng/tilt/pkg/logger"
)
type ClusterName string
type Env string
const (
EnvUnknown Env = "unknown"
EnvGKE Env = "gke"
EnvMinikube Env = "minikube"
EnvDockerDesktop Env = "docker-for-desktop"
EnvMicroK8s Env = "microk8s"
EnvCRC Env = "crc"
// Kind v0.6 substantially changed the protocol for detecting and pulling,
// so we represent them as two separate envs.
EnvKIND5 Env = "kind-0.5-"
EnvKIND6 Env = "kind-0.6+"
EnvK3D Env = "k3d"
EnvNone Env = "none" // k8s not running (not neces. a problem, e.g. if using Tilt x Docker Compose)
)
func (e Env) UsesLocalDockerRegistry() bool {
return e == EnvMinikube || e == EnvDockerDesktop || e == EnvMicroK8s
}
func (e Env) IsLocalCluster() bool {
return e == EnvMinikube || e == EnvDockerDesktop || e == EnvMicroK8s || e == EnvCRC || e == EnvKIND5 || e == EnvKIND6 || e == EnvK3D
}
func ProvideKubeContext(config *api.Config) (KubeContext, error) {
return KubeContext(config.CurrentContext), nil
}
func ProvideKubeConfig(clientLoader clientcmd.ClientConfig) (*api.Config, error) {
access := clientLoader.ConfigAccess()
config, err := access.GetStartingConfig()
if err != nil {
return nil, errors.Wrap(err, "Loading Kubernetes current-context")
}
return config, nil
}
func ProvideClusterName(ctx context.Context, config *api.Config) ClusterName {
n := config.CurrentContext
c, ok := config.Contexts[n]
if !ok {
return ""
}
return ClusterName(c.Cluster)
}
func ProvideEnv(ctx context.Context, config *api.Config) Env {
n := config.CurrentContext
c, ok := config.Contexts[n]
if !ok {
if n == "" {
return EnvNone
}
return EnvUnknown
}
cn := c.Cluster
if strings.HasPrefix(cn, string(EnvMinikube)) {
return EnvMinikube
} else if strings.HasPrefix(cn, "docker-for-desktop-cluster") || strings.HasPrefix(cn, "docker-desktop") {
return EnvDockerDesktop
} else if strings.HasPrefix(cn, string(EnvGKE)) {
// GKE cluster strings look like:
// gke_blorg-dev_us-central1-b_blorg
return EnvGKE
} else if cn == "kind" {
return EnvKIND5
} else if strings.HasPrefix(cn, "kind-") {
// As of KinD 0.6.0, KinD uses a context name prefix
// https://github.com/kubernetes-sigs/kind/issues/1060
return EnvKIND6
} else if strings.HasPrefix(cn, "microk8s-cluster") {
return EnvMicroK8s
} else if strings.HasPrefix(cn, "api-crc-testing") {
return EnvCRC
}
loc := c.LocationOfOrigin
homedir, err := homedir.Dir()
if err != nil {
logger.Get(ctx).Infof("Error loading homedir: %v", err)
return EnvUnknown
}
k3dDir := filepath.Join(homedir, ".config", "k3d")
if ospath.IsChild(k3dDir, loc) {
return EnvK3D
}
// NOTE(nick): Users can set the KIND cluster name with `kind create cluster
// --name`. This makes the KIND cluster really hard to detect.
//
// We currently do it by assuming that KIND configs are always stored in a
// file named kind-config-*.
//
// KIND internally looks for its clusters with `docker ps` + filters,
// which might be a route to explore if this isn't robust enough.
//
// This is for old pre-0.6.0 versions of KinD
if strings.HasPrefix(filepath.Base(loc), "kind-config-") {
return EnvKIND5
}
return EnvUnknown
}