func ensureContainersStarted(p DockerProvisioner, w io.Writer, relaunch bool, nodes ...cluster.Node) error {
if w == nil {
w = ioutil.Discard
}
confNames, err := scopedconfig.FindAllScopedConfigNames(nodeContainerCollection)
if err != nil {
return err
}
if len(nodes) == 0 {
nodes, err = p.Cluster().UnfilteredNodes()
if err != nil {
return err
}
}
errChan := make(chan error, len(nodes))
wg := sync.WaitGroup{}
log.Debugf("[node containers] recreating %d containers", len(nodes))
recreateContainer := func(node *cluster.Node, confName string) {
defer wg.Done()
pool := node.Metadata["pool"]
containerConfig, confErr := LoadNodeContainer(pool, confName)
if confErr != nil {
errChan <- confErr
return
}
log.Debugf("[node containers] recreating container %q in %s [%s]", confName, node.Address, pool)
fmt.Fprintf(w, "relaunching node container %q in the node %s [%s]\n", confName, node.Address, pool)
confErr = containerConfig.create(node.Address, pool, p, relaunch)
if confErr != nil {
msg := fmt.Sprintf("[node containers] failed to create container in %s [%s]: %s", node.Address, pool, confErr)
log.Error(msg)
errChan <- errors.New(msg)
}
}
for i := range nodes {
wg.Add(1)
go func(node *cluster.Node) {
defer wg.Done()
for j := range confNames {
wg.Add(1)
go recreateContainer(node, confNames[j])
}
}(&nodes[i])
}
wg.Wait()
close(errChan)
var allErrors []string
for err = range errChan {
allErrors = append(allErrors, err.Error())
}
if len(allErrors) == 0 {
return nil
}
return fmt.Errorf("multiple errors: %s", strings.Join(allErrors, ", "))
}
func AllNodeContainers() ([]NodeContainerConfigGroup, error) {
confNames, err := scopedconfig.FindAllScopedConfigNames(nodeContainerCollection)
if err != nil {
return nil, err
}
result := make([]NodeContainerConfigGroup, len(confNames))
for i, n := range confNames {
confMap, err := LoadNodeContainersForPools(n)
if err != nil {
return nil, err
}
result[i] = NodeContainerConfigGroup{Name: n, ConfigPools: confMap}
}
return result, nil
}
func AllNodeContainersNames() ([]string, error) {
return scopedconfig.FindAllScopedConfigNames(nodeContainerCollection)
}