podman

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package docker
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import (
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	"encoding/json"
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	"errors"
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	"fmt"
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	"net/http"
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)
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// TopResult represents the list of processes running in a container, as
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// returned by /containers/<id>/top.
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//
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// See https://goo.gl/FLwpPl for more details.
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type TopResult struct {
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	Titles    []string
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	Processes [][]string
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}
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// TopContainer returns processes running inside a container
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//
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// See https://goo.gl/FLwpPl for more details.
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func (c *Client) TopContainer(id string, psArgs string) (TopResult, error) {
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	var args string
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	var result TopResult
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	if psArgs != "" {
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		args = fmt.Sprintf("?ps_args=%s", psArgs)
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	}
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	path := fmt.Sprintf("/containers/%s/top%s", id, args)
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	resp, err := c.do(http.MethodGet, path, doOptions{})
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	if err != nil {
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		var e *Error
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		if errors.As(err, &e) && e.Status == http.StatusNotFound {
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			return result, &NoSuchContainer{ID: id}
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		}
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		return result, err
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	}
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	defer resp.Body.Close()
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	err = json.NewDecoder(resp.Body).Decode(&result)
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	return result, err
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}
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