54 lines
999 B
Go
54 lines
999 B
Go
package main
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import (
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"fmt"
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"strings"
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docker "github.com/fsouza/go-dockerclient"
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"github.com/pkg/errors"
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)
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func swarmManagerPeers(args []string) error {
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info, err := dockerInfo()
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if err != nil {
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return err
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}
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ips := make([]string, 0)
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for _, managerNode := range info.Swarm.RemoteManagers {
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ip, err := ipFromAddr(managerNode.Addr)
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if err != nil {
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return errors.Wrap(err, "ipFromAddr")
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}
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ips = append(ips, ip)
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}
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fmt.Println(strings.Join(ips, " "))
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return nil
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}
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func dockerInfo() (*docker.DockerInfo, error) {
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client, err := newVersionedDockerClientFromEnv(swarmDockerAPIVersion)
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if err != nil {
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return nil, errors.Wrap(err, "docker.NewVersionedClientFromEnv")
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}
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info, err := client.Info()
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if err != nil {
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return nil, errors.Wrap(err, "docker.Info")
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}
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return info, nil
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}
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func ipFromAddr(addr string) (string, error) {
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parts := strings.Split(addr, ":")
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if len(parts) != 2 {
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return "", fmt.Errorf("invalid address: %q", addr)
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}
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return parts[0], nil
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}
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