posh-providers/kubernets/kubectl/cluster.go
2023-05-25 10:03:43 +02:00

141 lines
3.3 KiB
Go

package kubectl
import (
"context"
"fmt"
"os"
"strings"
"github.com/foomo/posh/pkg/env"
"github.com/foomo/posh/pkg/log"
"github.com/foomo/posh/pkg/shell"
)
const None string = "_"
type Cluster struct {
l log.Logger
name string
kubectl *Kubectl
}
type Clusters []*Cluster
func NewCluster(kubectl *Kubectl, name string) *Cluster {
return &Cluster{
l: kubectl.l.Named("kubectl:" + name),
name: name,
kubectl: kubectl,
}
}
func (c *Cluster) IsNone() bool {
return c.name == None
}
func (c *Cluster) Name() string {
return c.name
}
func (c *Cluster) String() string {
return c.name
}
func (c *Cluster) Env(profile string) string {
return fmt.Sprintf("KUBECONFIG=%s", c.Config(profile))
}
func (c *Cluster) Config(profile string) string {
if profile != "" {
return env.Path(c.kubectl.cfg.ConfigPath, profile, c.Name()+".yaml")
}
return env.Path(c.kubectl.cfg.ConfigPath, c.Name()+".yaml")
}
func (c *Cluster) ConfigExists(profile string) bool {
if _, err := os.Stat(c.Config(profile)); err == nil {
return true
}
return false
}
func (c *Cluster) DeleteConfig(profile string) error {
if !c.ConfigExists(profile) {
return nil
}
return os.Remove(c.Config(profile))
}
//nolint:forcetypeassert
func (c *Cluster) Profiles(ctx context.Context) []string {
return c.kubectl.cache.Get("profiles", func() any {
files, err := os.ReadDir(c.kubectl.cfg.ConfigPath)
if err != nil {
c.l.Debug(err.Error())
return []string{}
}
ret := []string{}
for _, f := range files {
if f.IsDir() && !strings.HasPrefix(f.Name(), ".") {
ret = append(ret, f.Name())
}
}
return ret
}).([]string)
}
//nolint:forcetypeassert
func (c *Cluster) Namespaces(ctx context.Context, profile string) []string {
return c.kubectl.cache.Get(profile+"-"+c.name+"-namespaces", func() any {
if sh, err := c.shell(ctx, profile,
"get", "namespaces",
"-o", "jsonpath='{.items[*].metadata.name}'",
); err != nil {
c.l.Debug(err.Error())
return []string{}
} else if out, err := sh.Output(); err != nil {
c.l.Debug(err.Error())
return []string{}
} else {
return strings.Split(string(out), " ")
}
}).([]string)
}
//nolint:forcetypeassert
func (c *Cluster) Pods(ctx context.Context, profile, namespace string) []string {
return c.kubectl.cache.Get(profile+"-"+c.name+"-"+namespace+"-pods", func() any {
if sh, err := c.shell(ctx, profile,
"get", "pods",
"-n", namespace,
"-o", "jsonpath='{.items[*].metadata.name}'",
); err != nil {
c.l.Debug(err.Error())
return []string{}
} else if out, err := sh.Output(); err != nil {
c.l.Warn(err.Error())
return []string{}
} else {
return strings.Split(string(out), " ")
}
}).([]string)
}
// ------------------------------------------------------------------------------------------------
// ~ Private methods
// ------------------------------------------------------------------------------------------------
func (c *Cluster) shell(ctx context.Context, profile string, args ...string) (*shell.Shell, error) {
sh := shell.New(ctx, c.l, "kubectl").Args(args...)
if c.kubectl.authTokenProvider != nil {
if token, err := c.kubectl.authTokenProvider(ctx, c.Name()); err != nil {
return nil, err
} else {
sh.Args("--token", token)
}
}
return sh.Env(c.Env(profile)), nil
}