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libpod: Move getContainerNetworkInfo to networking_common.go

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[NO NEW TESTS NEEDED]

Signed-off-by: Doug Rabson <dfr@rabson.org>
This commit is contained in:
Doug Rabson
2022-09-08 16:32:08 +01:00
parent d014dca81f
commit 51c70e588d
3 changed files with 104 additions and 182 deletions
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104
libpod/networking_common.go
View File

@ -197,3 +197,107 @@ func (r *Runtime) reloadContainerNetwork(ctr *Container) (map[string]types.Statu
return r.configureNetNS(ctr, ctr.state.NetNS)
}
// Produce an InspectNetworkSettings containing information on the container
// network.
func (c *Container) getContainerNetworkInfo() (*define.InspectNetworkSettings, error) {
if c.config.NetNsCtr != "" {
netNsCtr, err := c.runtime.GetContainer(c.config.NetNsCtr)
if err != nil {
return nil, err
}
// see https://github.com/containers/podman/issues/10090
// the container has to be locked for syncContainer()
netNsCtr.lock.Lock()
defer netNsCtr.lock.Unlock()
// Have to sync to ensure that state is populated
if err := netNsCtr.syncContainer(); err != nil {
return nil, err
}
logrus.Debugf("Container %s shares network namespace, retrieving network info of container %s", c.ID(), c.config.NetNsCtr)
return netNsCtr.getContainerNetworkInfo()
}
settings := new(define.InspectNetworkSettings)
settings.Ports = makeInspectPortBindings(c.config.PortMappings, c.config.ExposedPorts)
networks, err := c.networks()
if err != nil {
return nil, err
}
if c.state.NetNS == nil {
if networkNSPath := c.joinedNetworkNSPath(); networkNSPath != "" {
if result, err := c.inspectJoinedNetworkNS(networkNSPath); err == nil {
// fallback to dummy configuration
settings.InspectBasicNetworkConfig = resultToBasicNetworkConfig(result)
return settings, nil
}
// do not propagate error inspecting a joined network ns
logrus.Errorf("Inspecting network namespace: %s of container %s: %v", networkNSPath, c.ID(), err)
}
// We can't do more if the network is down.
// We still want to make dummy configurations for each CNI net
// the container joined.
if len(networks) > 0 {
settings.Networks = make(map[string]*define.InspectAdditionalNetwork, len(networks))
for net, opts := range networks {
cniNet := new(define.InspectAdditionalNetwork)
cniNet.NetworkID = net
cniNet.Aliases = opts.Aliases
settings.Networks[net] = cniNet
}
}
return settings, nil
}
// Set network namespace path
settings.SandboxKey = c.state.NetNS.Path()
netStatus := c.getNetworkStatus()
// If this is empty, we're probably slirp4netns
if len(netStatus) == 0 {
return settings, nil
}
// If we have networks - handle that here
if len(networks) > 0 {
if len(networks) != len(netStatus) {
return nil, fmt.Errorf("network inspection mismatch: asked to join %d network(s) %v, but have information on %d network(s): %w", len(networks), networks, len(netStatus), define.ErrInternal)
}
settings.Networks = make(map[string]*define.InspectAdditionalNetwork)
for name, opts := range networks {
result := netStatus[name]
addedNet := new(define.InspectAdditionalNetwork)
addedNet.NetworkID = name
addedNet.Aliases = opts.Aliases
addedNet.InspectBasicNetworkConfig = resultToBasicNetworkConfig(result)
settings.Networks[name] = addedNet
}
// if not only the default network is connected we can return here
// otherwise we have to populate the InspectBasicNetworkConfig settings
_, isDefaultNet := networks[c.runtime.config.Network.DefaultNetwork]
if !(len(networks) == 1 && isDefaultNet) {
return settings, nil
}
}
// If not joining networks, we should have at most 1 result
if len(netStatus) > 1 {
return nil, fmt.Errorf("should have at most 1 network status result if not joining networks, instead got %d: %w", len(netStatus), define.ErrInternal)
}
if len(netStatus) == 1 {
for _, status := range netStatus {
settings.InspectBasicNetworkConfig = resultToBasicNetworkConfig(status)
}
}
return settings, nil
}

78
libpod/networking_freebsd.go
View File

@ -249,84 +249,6 @@ func getContainerNetIO(ctr *Container) (*LinkStatistics64, error) {
return &LinkStatistics64{}, nil
}
// Produce an InspectNetworkSettings containing information on the container
// network.
func (c *Container) getContainerNetworkInfo() (*define.InspectNetworkSettings, error) {
if c.config.NetNsCtr != "" {
netNsCtr, err := c.runtime.GetContainer(c.config.NetNsCtr)
if err != nil {
return nil, err
}
// see https://github.com/containers/podman/issues/10090
// the container has to be locked for syncContainer()
netNsCtr.lock.Lock()
defer netNsCtr.lock.Unlock()
// Have to sync to ensure that state is populated
if err := netNsCtr.syncContainer(); err != nil {
return nil, err
}
logrus.Debugf("Container %s shares network namespace, retrieving network info of container %s", c.ID(), c.config.NetNsCtr)
return netNsCtr.getContainerNetworkInfo()
}
settings := new(define.InspectNetworkSettings)
settings.Ports = makeInspectPortBindings(c.config.PortMappings, c.config.ExposedPorts)
networks, err := c.networks()
if err != nil {
return nil, err
}
netStatus := c.getNetworkStatus()
// If this is empty, we're probably slirp4netns
if len(netStatus) == 0 {
return settings, nil
}
// If we have networks - handle that here
if len(networks) > 0 {
if len(networks) != len(netStatus) {
return nil, fmt.Errorf("network inspection mismatch: asked to join %d network(s) %v, but have information on %d network(s): %w", len(networks), networks, len(netStatus), define.ErrInternal)
}
settings.Networks = make(map[string]*define.InspectAdditionalNetwork)
for name, opts := range networks {
result := netStatus[name]
addedNet := new(define.InspectAdditionalNetwork)
addedNet.NetworkID = name
basicConfig := resultToBasicNetworkConfig(result)
addedNet.Aliases = opts.Aliases
addedNet.InspectBasicNetworkConfig = basicConfig
settings.Networks[name] = addedNet
}
// if not only the default network is connected we can return here
// otherwise we have to populate the InspectBasicNetworkConfig settings
_, isDefaultNet := networks[c.runtime.config.Network.DefaultNetwork]
if !(len(networks) == 1 && isDefaultNet) {
return settings, nil
}
}
// If not joining networks, we should have at most 1 result
if len(netStatus) > 1 {
return nil, fmt.Errorf("should have at most 1 network status result if not joining networks, instead got %d: %w", len(netStatus), define.ErrInternal)
}
if len(netStatus) == 1 {
for _, status := range netStatus {
basicConfig := resultToBasicNetworkConfig(status)
settings.InspectBasicNetworkConfig = basicConfig
}
}
return settings, nil
}
// resultToBasicNetworkConfig produces an InspectBasicNetworkConfig from a CNI
// result
func resultToBasicNetworkConfig(result types.StatusBlock) define.InspectBasicNetworkConfig {

104
libpod/networking_linux.go
View File

@ -794,110 +794,6 @@ func getContainerNetIO(ctr *Container) (*netlink.LinkStatistics, error) {
return netStats, err
}
// Produce an InspectNetworkSettings containing information on the container
// network.
func (c *Container) getContainerNetworkInfo() (*define.InspectNetworkSettings, error) {
if c.config.NetNsCtr != "" {
netNsCtr, err := c.runtime.GetContainer(c.config.NetNsCtr)
if err != nil {
return nil, err
}
// see https://github.com/containers/podman/issues/10090
// the container has to be locked for syncContainer()
netNsCtr.lock.Lock()
defer netNsCtr.lock.Unlock()
// Have to sync to ensure that state is populated
if err := netNsCtr.syncContainer(); err != nil {
return nil, err
}
logrus.Debugf("Container %s shares network namespace, retrieving network info of container %s", c.ID(), c.config.NetNsCtr)
return netNsCtr.getContainerNetworkInfo()
}
settings := new(define.InspectNetworkSettings)
settings.Ports = makeInspectPortBindings(c.config.PortMappings, c.config.ExposedPorts)
networks, err := c.networks()
if err != nil {
return nil, err
}
if c.state.NetNS == nil {
if networkNSPath := c.joinedNetworkNSPath(); networkNSPath != "" {
if result, err := c.inspectJoinedNetworkNS(networkNSPath); err == nil {
// fallback to dummy configuration
settings.InspectBasicNetworkConfig = resultToBasicNetworkConfig(result)
return settings, nil
}
// do not propagate error inspecting a joined network ns
logrus.Errorf("Inspecting network namespace: %s of container %s: %v", networkNSPath, c.ID(), err)
}
// We can't do more if the network is down.
// We still want to make dummy configurations for each CNI net
// the container joined.
if len(networks) > 0 {
settings.Networks = make(map[string]*define.InspectAdditionalNetwork, len(networks))
for net, opts := range networks {
cniNet := new(define.InspectAdditionalNetwork)
cniNet.NetworkID = net
cniNet.Aliases = opts.Aliases
settings.Networks[net] = cniNet
}
}
return settings, nil
}
// Set network namespace path
settings.SandboxKey = c.state.NetNS.Path()
netStatus := c.getNetworkStatus()
// If this is empty, we're probably slirp4netns
if len(netStatus) == 0 {
return settings, nil
}
// If we have networks - handle that here
if len(networks) > 0 {
if len(networks) != len(netStatus) {
return nil, fmt.Errorf("network inspection mismatch: asked to join %d network(s) %v, but have information on %d network(s): %w", len(networks), networks, len(netStatus), define.ErrInternal)
}
settings.Networks = make(map[string]*define.InspectAdditionalNetwork)
for name, opts := range networks {
result := netStatus[name]
addedNet := new(define.InspectAdditionalNetwork)
addedNet.NetworkID = name
addedNet.Aliases = opts.Aliases
addedNet.InspectBasicNetworkConfig = resultToBasicNetworkConfig(result)
settings.Networks[name] = addedNet
}
// if not only the default network is connected we can return here
// otherwise we have to populate the InspectBasicNetworkConfig settings
_, isDefaultNet := networks[c.runtime.config.Network.DefaultNetwork]
if !(len(networks) == 1 && isDefaultNet) {
return settings, nil
}
}
// If not joining networks, we should have at most 1 result
if len(netStatus) > 1 {
return nil, fmt.Errorf("should have at most 1 network status result if not joining networks, instead got %d: %w", len(netStatus), define.ErrInternal)
}
if len(netStatus) == 1 {
for _, status := range netStatus {
settings.InspectBasicNetworkConfig = resultToBasicNetworkConfig(status)
}
}
return settings, nil
}
func (c *Container) joinedNetworkNSPath() string {
for _, namespace := range c.config.Spec.Linux.Namespaces {
if namespace.Type == specs.NetworkNamespace {