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>

3 files changed, 53 insertions, 0 deletions

diff --git a/pkg/adapter/containers.go b/pkg/adapter/containers.go
index 8481a0cec..9f5fc7e65 100644
--- a/pkg/adapter/containers.go
+++ b/pkg/adapter/containers.go
@@ -766,3 +766,23 @@ func (r *LocalRuntime) Restart(ctx context.Context, c *cliconfig.RestartValues)
 	}
 	return pool.Run()
 }
+
+// Top display the running processes of a container
+func (r *LocalRuntime) Top(cli *cliconfig.TopValues) ([]string, error) {
+	var (
+		descriptors []string
+		container   *libpod.Container
+		err         error
+	)
+	if cli.Latest {
+		descriptors = cli.InputArgs
+		container, err = r.Runtime.GetLatestContainer()
+	} else {
+		descriptors = cli.InputArgs[1:]
+		container, err = r.Runtime.LookupContainer(cli.InputArgs[0])
+	}
+	if err != nil {
+		return nil, errors.Wrapf(err, "unable to lookup requested container")
+	}
+	return container.Top(descriptors)
+}
diff --git a/pkg/adapter/containers_remote.go b/pkg/adapter/containers_remote.go
index e8f221eaf..ef6d0efe1 100644
--- a/pkg/adapter/containers_remote.go
+++ b/pkg/adapter/containers_remote.go
@@ -832,3 +832,23 @@ func (r *LocalRuntime) Restart(ctx context.Context, c *cliconfig.RestartValues)
 	}
 	return ok, failures, nil
 }
+
+// Top display the running processes of a container
+func (r *LocalRuntime) Top(cli *cliconfig.TopValues) ([]string, error) {
+	var (
+		ctr         *Container
+		err         error
+		descriptors []string
+	)
+	if cli.Latest {
+		ctr, err = r.GetLatestContainer()
+		descriptors = cli.InputArgs
+	} else {
+		ctr, err = r.LookupContainer(cli.InputArgs[0])
+		descriptors = cli.InputArgs[1:]
+	}
+	if err != nil {
+		return nil, err
+	}
+	return iopodman.Top().Call(r.Conn, ctr.ID(), descriptors)
+}
diff --git a/pkg/varlinkapi/containers.go b/pkg/varlinkapi/containers.go
index 237407050..872c7bc26 100644
--- a/pkg/varlinkapi/containers.go
+++ b/pkg/varlinkapi/containers.go
@@ -733,3 +733,16 @@ func newPodmanLogLine(line *libpod.LogLine) iopodman.LogLine {
 		Cid:          line.CID,
 	}
 }
+
+// Top displays information about a container's running processes
+func (i *LibpodAPI) Top(call iopodman.VarlinkCall, nameOrID string, descriptors []string) error {
+	ctr, err := i.Runtime.LookupContainer(nameOrID)
+	if err != nil {
+		return call.ReplyContainerNotFound(ctr.ID(), err.Error())
+	}
+	topInfo, err := ctr.Top(descriptors)
+	if err != nil {
+		return call.ReplyErrorOccurred(err.Error())
+	}
+	return call.ReplyTop(topInfo)
+}