From 6220ef1488d3e135c332c265fdb6a3c7b240b561 Mon Sep 17 00:00:00 2001
From: baude <bbaude@redhat.com>
Date: Wed, 3 Jul 2019 19:21:38 -0500
Subject: inclusion of podman network
adding podman network and the subcommands inspect, list, and rm. the
inspect subcommand displays the raw cni network configuration. the list
subcommand displays a summary of the cni networks ala ps. and the rm
subcommand removes a cni network.
Signed-off-by: baude <bbaude@redhat.com>
---
pkg/adapter/network.go | 147 +++++++++++++++++++++++++++++++++++++++++++++++++
pkg/network/config.go | 4 ++
pkg/network/network.go | 26 +++++++++
3 files changed, 177 insertions(+)
create mode 100644 pkg/adapter/network.go
create mode 100644 pkg/network/config.go
create mode 100644 pkg/network/network.go
(limited to 'pkg')
diff --git a/pkg/adapter/network.go b/pkg/adapter/network.go
new file mode 100644
index 000000000..cf3a1dfdd
--- /dev/null
+++ b/pkg/adapter/network.go
@@ -0,0 +1,147 @@
+// +build !remoteclient
+
+package adapter
+
+import (
+ "encoding/json"
+ "fmt"
+ "io/ioutil"
+ "os"
+ "strings"
+ "text/tabwriter"
+
+ "github.com/containernetworking/cni/libcni"
+ "github.com/containers/libpod/cmd/podman/cliconfig"
+ "github.com/containers/libpod/pkg/network"
+ "github.com/pkg/errors"
+)
+
+func getCNIConfDir(r *LocalRuntime) (string, error) {
+ config, err := r.GetConfig()
+ if err != nil {
+ return "", err
+ }
+ configPath := config.CNIConfigDir
+
+ if len(config.CNIConfigDir) < 1 {
+ configPath = network.CNIConfigDir
+ }
+ return configPath, nil
+}
+
+// NetworkList displays summary information about CNI networks
+func (r *LocalRuntime) NetworkList(cli *cliconfig.NetworkListValues) error {
+ cniConfigPath, err := getCNIConfDir(r)
+ if err != nil {
+ return err
+ }
+ networks, err := network.LoadCNIConfsFromDir(cniConfigPath)
+ if err != nil {
+ return err
+ }
+ // quiet means we only print the network names
+ if cli.Quiet {
+ for _, cniNetwork := range networks {
+ fmt.Println(cniNetwork.Name)
+ }
+ return nil
+ }
+ w := tabwriter.NewWriter(os.Stdout, 0, 0, 3, ' ', 0)
+ if _, err := fmt.Fprintln(w, "NAME\tVERSION\tPLUGINS"); err != nil {
+ return err
+ }
+ for _, cniNetwork := range networks {
+ if _, err := fmt.Fprintf(w, "%s\t%s\t%s\n", cniNetwork.Name, cniNetwork.CNIVersion, getCNIPlugins(cniNetwork)); err != nil {
+ return err
+ }
+ }
+ return w.Flush()
+}
+
+// NetworkInspect displays the raw CNI configuration for one
+// or more CNI networks
+func (r *LocalRuntime) NetworkInspect(cli *cliconfig.NetworkInspectValues) error {
+ var (
+ rawCNINetworks []map[string]interface{}
+ )
+ cniConfigPath, err := getCNIConfDir(r)
+ if err != nil {
+ return err
+ }
+ for _, name := range cli.InputArgs {
+ b, err := readRawCNIConfByName(name, cniConfigPath)
+ if err != nil {
+ return err
+ }
+ rawList := make(map[string]interface{})
+ if err := json.Unmarshal(b, &rawList); err != nil {
+ return fmt.Errorf("error parsing configuration list: %s", err)
+ }
+ rawCNINetworks = append(rawCNINetworks, rawList)
+ }
+ out, err := json.MarshalIndent(rawCNINetworks, "", "\t")
+ if err != nil {
+ return err
+ }
+ fmt.Printf("%s\n", out)
+ return nil
+}
+
+// NetworkRemove deletes one or more CNI networks
+func (r *LocalRuntime) NetworkRemove(cli *cliconfig.NetworkRmValues) error {
+ cniConfigPath, err := getCNIConfDir(r)
+ if err != nil {
+ return err
+ }
+ for _, name := range cli.InputArgs {
+ cniPath, err := getCNIConfigPathByName(name, cniConfigPath)
+ if err != nil {
+ return err
+ }
+ if err := os.Remove(cniPath); err != nil {
+ return err
+ }
+ fmt.Printf("Deleted: %s\n", name)
+ }
+ return nil
+}
+
+// getCNIConfigPathByName finds a CNI network by name and
+// returns its configuration file path
+func getCNIConfigPathByName(name, cniConfigPath string) (string, error) {
+ files, err := libcni.ConfFiles(cniConfigPath, []string{".conflist"})
+ if err != nil {
+ return "", err
+ }
+ for _, confFile := range files {
+ conf, err := libcni.ConfListFromFile(confFile)
+ if err != nil {
+ return "", err
+ }
+ if conf.Name == name {
+ return confFile, nil
+ }
+ }
+ return "", errors.Errorf("unable to find network configuration for %s", name)
+}
+
+// readRawCNIConfByName reads the raw CNI configuration for a CNI
+// network by name
+func readRawCNIConfByName(name, cniConfigPath string) ([]byte, error) {
+ confFile, err := getCNIConfigPathByName(name, cniConfigPath)
+ if err != nil {
+ return nil, err
+ }
+ b, err := ioutil.ReadFile(confFile)
+ return b, err
+}
+
+// getCNIPlugins returns a list of plugins that a given network
+// has in the form of a string
+func getCNIPlugins(list *libcni.NetworkConfigList) string {
+ var plugins []string
+ for _, plug := range list.Plugins {
+ plugins = append(plugins, plug.Network.Type)
+ }
+ return strings.Join(plugins, ",")
+}
diff --git a/pkg/network/config.go b/pkg/network/config.go
new file mode 100644
index 000000000..d282f66b6
--- /dev/null
+++ b/pkg/network/config.go
@@ -0,0 +1,4 @@
+package network
+
+// CNIConfigDir is the path where CNI config files exist
+const CNIConfigDir = "/etc/cni/net.d"
diff --git a/pkg/network/network.go b/pkg/network/network.go
new file mode 100644
index 000000000..9d04340a3
--- /dev/null
+++ b/pkg/network/network.go
@@ -0,0 +1,26 @@
+package network
+
+import (
+ "sort"
+
+ "github.com/containernetworking/cni/libcni"
+)
+
+// LoadCNIConfsFromDir loads all the CNI configurations from a dir
+func LoadCNIConfsFromDir(dir string) ([]*libcni.NetworkConfigList, error) {
+ var configs []*libcni.NetworkConfigList
+ files, err := libcni.ConfFiles(dir, []string{".conflist"})
+ if err != nil {
+ return nil, err
+ }
+ sort.Strings(files)
+
+ for _, confFile := range files {
+ conf, err := libcni.ConfListFromFile(confFile)
+ if err != nil {
+ return nil, err
+ }
+ configs = append(configs, conf)
+ }
+ return configs, nil
+}
--
cgit v1.2.3-54-g00ecf