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authorPaul Holzinger <paul.holzinger@web.de>2020-12-01 22:12:16 +0100
committerPaul Holzinger <paul.holzinger@web.de>2020-12-02 10:27:00 +0100
commitc31a5c0d9c9db52f03caa443a3fdfdce194046e8 (patch)
treefe21af9d8e5b87e6fa4054bb8d30ce17ab673662 /libpod/network/files.go
parent9c5fe954cca8b4bcb8f552645e1f52a5d9824134 (diff)
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Add support for network ids
The network ID is not stored. It is just the sha256 hash from the network name. There is a risk of a potential hash collision. However it's very unlikely and even if we hit this it will complain that more than network with this ID exists. The main benefit is that the compat api can have proper network ID support. Also this adds the support for `podman network ls --format "{{.ID}}"` and `--filter id=<ID>`. It also ensures that we can do network rm <ID> and network inspect <ID>. Since we use a hash this commit is backwards compatible even for already existing networks. Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
Diffstat (limited to 'libpod/network/files.go')
-rw-r--r--libpod/network/files.go18
1 files changed, 15 insertions, 3 deletions
diff --git a/libpod/network/files.go b/libpod/network/files.go
index 83cb1c23a..33cf01064 100644
--- a/libpod/network/files.go
+++ b/libpod/network/files.go
@@ -50,13 +50,15 @@ func LoadCNIConfsFromDir(dir string) ([]*libcni.NetworkConfigList, error) {
return configs, nil
}
-// GetCNIConfigPathByName finds a CNI network by name and
+// GetCNIConfigPathByNameOrID finds a CNI network by name and
// returns its configuration file path
-func GetCNIConfigPathByName(config *config.Config, name string) (string, error) {
+func GetCNIConfigPathByNameOrID(config *config.Config, name string) (string, error) {
files, err := libcni.ConfFiles(GetCNIConfDir(config), []string{".conflist"})
if err != nil {
return "", err
}
+ idMatch := 0
+ file := ""
for _, confFile := range files {
conf, err := libcni.ConfListFromFile(confFile)
if err != nil {
@@ -65,6 +67,16 @@ func GetCNIConfigPathByName(config *config.Config, name string) (string, error)
if conf.Name == name {
return confFile, nil
}
+ if strings.HasPrefix(GetNetworkID(conf.Name), name) {
+ idMatch++
+ file = confFile
+ }
+ }
+ if idMatch == 1 {
+ return file, nil
+ }
+ if idMatch > 1 {
+ return "", errors.Errorf("more than one result for network ID %s", name)
}
return "", errors.Wrap(define.ErrNoSuchNetwork, fmt.Sprintf("unable to find network configuration for %s", name))
}
@@ -72,7 +84,7 @@ func GetCNIConfigPathByName(config *config.Config, name string) (string, error)
// ReadRawCNIConfByName reads the raw CNI configuration for a CNI
// network by name
func ReadRawCNIConfByName(config *config.Config, name string) ([]byte, error) {
- confFile, err := GetCNIConfigPathByName(config, name)
+ confFile, err := GetCNIConfigPathByNameOrID(config, name)
if err != nil {
return nil, err
}