// teardown closes owned children. If any errors occur, this function returns
// the first error.
func (n *IpfsNode) teardown() error {
log.Debug("core is shutting down...")
// owned objects are closed in this teardown to ensure that they're closed
// regardless of which constructor was used to add them to the node.
var closers []io.Closer
// NOTE: The order that objects are added(closed) matters, if an object
// needs to use another during its shutdown/cleanup process, it should be
// closed before that other object
if n.FilesRoot != nil {
closers = append(closers, n.FilesRoot)
}
if n.Exchange != nil {
closers = append(closers, n.Exchange)
}
if n.Mounts.Ipfs != nil && !n.Mounts.Ipfs.IsActive() {
closers = append(closers, mount.Closer(n.Mounts.Ipfs))
}
if n.Mounts.Ipns != nil && !n.Mounts.Ipns.IsActive() {
closers = append(closers, mount.Closer(n.Mounts.Ipns))
}
if dht, ok := n.Routing.(*dht.IpfsDHT); ok {
closers = append(closers, dht.Process())
}
if n.Blocks != nil {
closers = append(closers, n.Blocks)
}
if n.Bootstrapper != nil {
closers = append(closers, n.Bootstrapper)
}
if n.PeerHost != nil {
closers = append(closers, n.PeerHost)
}
// Repo closed last, most things need to preserve state here
closers = append(closers, n.Repo)
var errs []error
for _, closer := range closers {
if err := closer.Close(); err != nil {
errs = append(errs, err)
}
}
if len(errs) > 0 {
return errs[0]
}
return nil
}
// teardown closes owned children. If any errors occur, this function returns
// the first error.
func (n *IpfsNode) teardown() error {
log.Debug("core is shutting down...")
// owned objects are closed in this teardown to ensure that they're closed
// regardless of which constructor was used to add them to the node.
closers := []io.Closer{
n.Repo,
}
if n.Exchange != nil {
closers = append(closers, n.Exchange)
}
if n.Mounts.Ipfs != nil {
closers = append(closers, mount.Closer(n.Mounts.Ipfs))
}
if n.Mounts.Ipns != nil {
closers = append(closers, mount.Closer(n.Mounts.Ipns))
}
// Filesystem needs to be closed before network, dht, and blockservice
// so it can use them as its shutting down
if n.IpnsFs != nil {
closers = append(closers, n.IpnsFs)
}
if n.Blocks != nil {
closers = append(closers, n.Blocks)
}
if n.Bootstrapper != nil {
closers = append(closers, n.Bootstrapper)
}
if dht, ok := n.Routing.(*dht.IpfsDHT); ok {
closers = append(closers, dht.Process())
}
if n.PeerHost != nil {
closers = append(closers, n.PeerHost)
}
var errs []error
for _, closer := range closers {
if err := closer.Close(); err != nil {
errs = append(errs, err)
}
}
if len(errs) > 0 {
return errs[0]
}
return nil
}