enable podman remote top

add the ability for the remote client to display a container's running
processes.

Signed-off-by: baude <bbaude@redhat.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/libpod/container_top_linux.go b/libpod/container_top_linux.go
index 9b0f156b5..b370495fe 100644
--- a/libpod/container_top_linux.go
+++ b/libpod/container_top_linux.go
@@ -7,8 +7,22 @@ import (
 	"strings"
 
 	"github.com/containers/psgo"
+	"github.com/pkg/errors"
 )
 
+// Top gathers statistics about the running processes in a container. It returns a
+// []string for output
+func (c *Container) Top(descriptors []string) ([]string, error) {
+	conStat, err := c.State()
+	if err != nil {
+		return nil, errors.Wrapf(err, "unable to look up state for %s", c.ID())
+	}
+	if conStat != ContainerStateRunning {
+		return nil, errors.Errorf("top can only be used on running containers")
+	}
+	return c.GetContainerPidInformation(descriptors)
+}
+
 // GetContainerPidInformation returns process-related data of all processes in
 // the container.  The output data can be controlled via the `descriptors`
 // argument which expects format descriptors and supports all AIXformat