[Podman] Re: Golang to use Podman REST API

30 Nov 2021


      On Mon, Nov 22, 2021, at 8:30 PM, Brent Baude wrote:
...
Also -> https://github.com/containers/podman/tree/main/pkg/bindings
When using the above bindings, I am getting below error:

<snip>
# pkg-config --cflags  -- devmapper
Package devmapper was not found in the pkg-config search path.
Perhaps you should add the directory containing `devmapper.pc'
to the PKG_CONFIG_PATH environment variable
Package 'devmapper', required by 'virtual:world', not found
pkg-config: exit status 1
# github.com/containers/storage/drivers/btrfs
../../../go/pkg/mod/github.com/containers/storage@v1.36.0/drivers/btrfs/btrfs.go:8:10: fatal error: btrfs/ioctl.h: No such file or directory
#include <btrfs/ioctl.h>
          ^~~~~~~~~~~~~~~
compilation terminated.
</snip>

Versions:
Go: go version go1.15.14 linux/amd64
OS: Red Hat Enterprise Linux release 8.4 (Ootpa) (CSB)

Go.mod:

module example.com

go 1.15

require (
        github.com/containers/podman/v2 v2.2.1 // indirect
        github.com/containers/podman/v3 v3.4.2
)
Code:

<snip a2.go>
package main

import (
        "context"
        "fmt"
        "os"
        "github.com/containers/podman/v3/pkg/bindings"
        "github.com/containers/podman/v3/pkg/bindings/images"
)

const (
        socketPath  = "unix://run/user/11567/podman/podman.sock"
        imageName   = "registry.redhat.io/openshift4/performance-addon-rhel8-operator:v4.9"
)
func main() {
        conn, err := bindings.NewConnection(context.Background(), socketPath)
        if err != nil {
                fmt.Println(err)
                os.Exit(1)
        }
        fmt.Printf("conn is of type: %T\n", conn)
        _, err = images.Pull(conn, imageName, nil)
        if err != nil {
                fmt.Println(err)
                os.Exit(1)
        }
}
</snip>
When i execute the above code , i get the error described above.
...
On Mon, Nov 22, 2021 at 3:12 AM Valentin Rothberg <rothberg@redhat.com> wrote:
...
Hi Niranjan,
Thanks for reaching out.
On Mon, Nov 22, 2021 at 8:11 AM <niranjan@ashoo.in> wrote:
...
Hi all
I am looking for some code examples in Golang to use Podman REST API. Is there a repository or some code examples that i can refer to?
Also while looking at the Podman REST API. (https://docs.podman.io/en/latest/_static/api.html). how do i call the "podman run" using the REST API ?
A container run boils down to create+start.  Some examples can be found in how the remote client of Podman is using the Go-bindings for the REST API, for example: https://github.com/containers/podman/blob/main/pkg/domain/infra/tunnel/conta...
The bindings live in pkg/bindings/{containers,images,...}.
Kind regards,
 Valentin
...
Regards
Niranjan.
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[Podman] Re: Golang to use Podman REST API

niranjan＠ashoo.in