60 lines
1.4 KiB
Go
60 lines
1.4 KiB
Go
package etcd
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import (
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"fmt"
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"os"
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"runtime"
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"time"
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"github.com/coreos/etcd/log"
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"github.com/coreos/etcd/server"
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"github.com/coreos/etcd/third_party/github.com/coreos/go-etcd/etcd"
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)
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var defaultEtcdBinaryDir = "/usr/libexec/etcd/internal_versions/"
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func registerAvailableInternalVersions(name string, addr string, tls *server.TLSInfo) {
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var c *etcd.Client
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if tls.Scheme() == "http" {
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c = etcd.NewClient([]string{addr})
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} else {
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var err error
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c, err = etcd.NewTLSClient([]string{addr}, tls.CertFile, tls.KeyFile, tls.CAFile)
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if err != nil {
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log.Fatalf("client TLS error: %v", err)
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}
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}
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vers, err := getInternalVersions()
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if err != nil {
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log.Infof("failed to get local etcd versions: %v", err)
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return
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}
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for _, v := range vers {
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for {
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_, err := c.Set("/_etcd/available-internal-versions/"+v+"/"+name, "ok", 0)
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if err == nil {
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break
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}
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time.Sleep(time.Second)
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}
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}
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log.Infof("%s: available_internal_versions %s is registered into key space successfully.", name, vers)
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}
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func getInternalVersions() ([]string, error) {
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if runtime.GOOS != "linux" {
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return nil, fmt.Errorf("unmatched os version %v", runtime.GOOS)
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}
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etcdBinaryDir := os.Getenv("ETCD_BINARY_DIR")
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if etcdBinaryDir == "" {
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etcdBinaryDir = defaultEtcdBinaryDir
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}
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dir, err := os.Open(etcdBinaryDir)
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if err != nil {
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return nil, err
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}
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defer dir.Close()
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return dir.Readdirnames(-1)
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}
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