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format option added to network inspect command.

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This helps user to print the inspect output in go template format.

Signed-off-by: Kunal Kushwaha <kunal.kushwaha@gmail.com>
This commit is contained in:
Kunal Kushwaha
2020-05-11 07:27:10 +00:00
parent 1dde2730e8
commit ade20f3323
2 changed files with 41 additions and 1 deletions
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26
cmd/podman/networks/inspect.go
View File

@ -3,6 +3,10 @@ package network
import (
"encoding/json"
"fmt"
"html/template"
"io"
"os"
"strings"
"github.com/containers/libpod/cmd/podman/registry"
"github.com/containers/libpod/pkg/domain/entities"
@ -24,12 +28,18 @@ var (
}
)
var (
networkInspectOptions entities.NetworkInspectOptions
)
func init() {
registry.Commands = append(registry.Commands, registry.CliCommand{
Mode: []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
Command: networkinspectCommand,
Parent: networkCmd,
})
flags := networkinspectCommand.Flags()
flags.StringVarP(&networkInspectOptions.Format, "format", "f", "", "Pretty-print network to JSON or using a Go template")
}
func networkInspect(cmd *cobra.Command, args []string) error {
@ -41,6 +51,22 @@ func networkInspect(cmd *cobra.Command, args []string) error {
if err != nil {
return err
}
if strings.ToLower(networkInspectOptions.Format) == "json" || networkInspectOptions.Format == "" {
fmt.Println(string(b))
} else {
var w io.Writer = os.Stdout
//There can be more than 1 in the inspect output.
format := "{{range . }}" + networkInspectOptions.Format + "{{end}}"
tmpl, err := template.New("inspectNetworks").Parse(format)
if err != nil {
return err
}
if err := tmpl.Execute(w, responses); err != nil {
return err
}
if flusher, ok := w.(interface{ Flush() error }); ok {
return flusher.Flush()
}
}
return nil
}

14
docs/source/markdown/podman-network-inspect.1.md
View File

@ -9,6 +9,15 @@ podman\-network\-inspect - Displays the raw CNI network configuration for one or
## DESCRIPTION
Display the raw (JSON format) network configuration. This command is not available for rootless users.
## OPTIONS
**--quiet**, **-q**
The `quiet` option will restrict the output to only the network names.
**--format**, **-f**
Pretty-print networks to JSON or using a Go template.
## EXAMPLE
Inspect the default podman network
@ -43,6 +52,11 @@ Inspect the default podman network
]
```
```
# podman network inspect podman --format '{{(index .plugins 0).ipam.ranges}}'
[[map[gateway:10.88.0.1 subnet:10.88.0.0/16]]]
```
## SEE ALSO
podman(1), podman-network(1), podman-network-ls(1)