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client.go
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client.go
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package k8s
import (
"github.com/dbunion/com/log"
"github.com/dbunion/com/scheduler"
"github.com/juju/errors"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest"
)
var (
defaultLogger log.Logger
)
// ClientOpts - client options
type ClientOpts struct {
URL string
Insecure bool
Username string
Password string
BearerToken string
Data interface{}
}
// APIClient - api client
type APIClient struct {
clientSet *kubernetes.Clientset
}
// NewAPIClient - create new api client
func newAPIClient(opts *ClientOpts) (*APIClient, error) {
config := &rest.Config{
Host: opts.URL,
Username: opts.Username,
Password: opts.Password,
TLSClientConfig: rest.TLSClientConfig{
Insecure: opts.Insecure,
},
BearerToken: opts.BearerToken,
}
// Create the ClientSet
client, err := kubernetes.NewForConfig(config)
if err != nil {
return nil, errors.Trace(err)
}
return &APIClient{
clientSet: client,
}, nil
}
// Client - k8s base client
type Client struct {
APIClient
cfg scheduler.Param
logger log.Logger
ConfigMap scheduler.ConfigOperator
Namespace scheduler.NamespaceOperator
Service scheduler.ServiceOperator
Pod scheduler.PodOperator
Node scheduler.NodeOperator
ReplicationController scheduler.RCOperator
StatefulSet scheduler.STSOperator
DaemonSet scheduler.DaemonSetOperator
Deployment scheduler.DeploymentOperator
ReplicaSet scheduler.ReplicaSetOperator
}
// NewK8sClient - create new scheduler client
func NewK8sClient() scheduler.Scheduler {
return &Client{
logger: defaultLogger,
}
}
// newClient - create new api client
func newClient(opts *ClientOpts) (*Client, error) {
baseClient, err := newAPIClient(opts)
if err != nil {
return nil, err
}
client := &Client{
APIClient: *baseClient,
}
// init base operator
client.Node = newNodeClient(client)
client.Namespace = newNameSpaceClient(client)
client.ConfigMap = newConfigMapClient(client)
client.Service = newServiceClient(client)
client.Pod = newPodClient(client)
client.ReplicationController = newReplicationControllerClient(client)
client.StatefulSet = newStatefulSetClient(client)
client.DaemonSet = newDaemonSetClient(client)
client.Deployment = newDeploymentClient(client)
client.ReplicaSet = newReplicaSetClient(client)
return client, nil
}
// GetNodeOperator - get node Operator
func (c *Client) GetNodeOperator() scheduler.NodeOperator {
return c.Node
}
// GetNamespaceOperator - get namespace Operator
func (c *Client) GetNamespaceOperator() scheduler.NamespaceOperator {
return c.Namespace
}
// GetConfigOperator - get config Operator
func (c *Client) GetConfigOperator() scheduler.ConfigOperator {
return c.ConfigMap
}
// GetServiceOperator - get service Operator
func (c *Client) GetServiceOperator() scheduler.ServiceOperator {
return c.Service
}
// GetPodOperator - get pod Operator
func (c *Client) GetPodOperator() scheduler.PodOperator {
return c.Pod
}
// GetRCOperator - get rc Operator
func (c *Client) GetRCOperator() scheduler.RCOperator {
return c.ReplicationController
}
// GetSTSOperator - get sts Operator
func (c *Client) GetSTSOperator() scheduler.STSOperator {
return c.StatefulSet
}
// GetDaemonSetOperator - get DaemonSet Operator
func (c *Client) GetDaemonSetOperator() scheduler.DaemonSetOperator {
return c.DaemonSet
}
// GetDeploymentOperator - get Deployment Operator
func (c *Client) GetDeploymentOperator() scheduler.DeploymentOperator {
return c.Deployment
}
// GetReplicaSetOperator - get ReplicaSet Operator
func (c *Client) GetReplicaSetOperator() scheduler.ReplicaSetOperator {
return c.ReplicaSet
}
// Close - release resource
func (c *Client) Close() error {
return nil
}
// StartAndGC - init base object
func (c *Client) StartAndGC(config scheduler.Param) error {
c.cfg = config
if config.Logger != nil {
c.logger = config.Logger
}
opts := &ClientOpts{}
opts.URL = config.Server
opts.Username = config.User
opts.Password = config.Password
opts.Insecure = config.Insecure
if config.Token != "" {
opts.BearerToken = config.Token
}
cli, err := newClient(opts)
if err != nil {
return err
}
*c = *cli
return nil
}
// init - init env and logger
func init() {
scheduler.Register(scheduler.TypeK8s, NewK8sClient)
defaultLogger, _ = log.NewLogger(log.TypeZsskyLog, log.Config{
Level: log.LevelInfo,
FilePath: "/tmp/scheduler.log",
})
}