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cluster.go
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cluster.go
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package ec2
import (
"sync/atomic"
"github.com/influxdata/kapacitor/services/ec2/client"
"github.com/pkg/errors"
)
type Cluster struct {
configValue atomic.Value // Config
client client.Client
diag Diagnostic
}
func NewCluster(c Config, d Diagnostic) (*Cluster, error) {
clientConfig, err := c.ClientConfig()
if err != nil {
return nil, errors.Wrap(err, "failed to create ec2 client config")
}
cli, err := client.New(clientConfig)
if err != nil {
return nil, errors.Wrap(err, "failed to create ec2 client")
}
s := &Cluster{
client: cli,
diag: d,
}
s.configValue.Store(c)
return s, nil
}
func (s *Cluster) Open() error {
return nil
}
func (s *Cluster) Close() error {
return nil
}
func (s *Cluster) Update(c Config) error {
s.configValue.Store(c)
clientConfig, err := c.ClientConfig()
if err != nil {
return errors.Wrap(err, "failed to create ec2client config")
}
return s.client.Update(clientConfig)
}
func (s *Cluster) Test() error {
cli, err := s.Client()
if err != nil {
return errors.Wrap(err, "failed to get client")
}
version, err := cli.Version()
if err != nil {
return errors.Wrap(err, "failed to query server version")
}
if version == "" {
return errors.New("got empty version from server")
}
return nil
}
func (s *Cluster) config() Config {
return s.configValue.Load().(Config)
}
func (s *Cluster) Client() (client.Client, error) {
config := s.config()
if !config.Enabled {
return nil, errors.New("service is not enabled")
}
return s.client, nil
}