virtcontainers: storage: Add a noop version of filesystem

This noop implementation of resourceStorage will allow for easier
unit testing of some sandbox functions.

Fixes #632

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>

virtcontainers/noop_resource_storage.go

@@ -0,0 +1,112 @@
+// Copyright (c) 2018 Intel Corporation
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+
+package virtcontainers
+
+import (
+	"github.com/kata-containers/runtime/virtcontainers/device/api"
+)
+
+type noopResourceStorage struct{}
+
+func (n *noopResourceStorage) createAllResources(sandbox *Sandbox) error {
+	return nil
+}
+
+func (n *noopResourceStorage) containerURI(sandboxID, containerID string, resource sandboxResource) (string, string, error) {
+	return "", "", nil
+}
+
+func (n *noopResourceStorage) sandboxURI(sandboxID string, resource sandboxResource) (string, string, error) {
+	return "", "", nil
+}
+
+func (n *noopResourceStorage) storeSandboxResource(sandboxID string, resource sandboxResource, data interface{}) error {
+	return nil
+}
+
+func (n *noopResourceStorage) deleteSandboxResources(sandboxID string, resources []sandboxResource) error {
+	return nil
+}
+
+func (n *noopResourceStorage) fetchSandboxConfig(sandboxID string) (SandboxConfig, error) {
+	return SandboxConfig{}, nil
+}
+
+func (n *noopResourceStorage) fetchSandboxState(sandboxID string) (State, error) {
+	return State{}, nil
+}
+
+func (n *noopResourceStorage) fetchSandboxNetwork(sandboxID string) (NetworkNamespace, error) {
+	return NetworkNamespace{}, nil
+}
+
+func (n *noopResourceStorage) storeSandboxNetwork(sandboxID string, networkNS NetworkNamespace) error {
+	return nil
+}
+
+func (n *noopResourceStorage) fetchSandboxDevices(sandboxID string) ([]api.Device, error) {
+	return []api.Device{}, nil
+}
+
+func (n *noopResourceStorage) storeSandboxDevices(sandboxID string, devices []api.Device) error {
+	return nil
+}
+
+func (n *noopResourceStorage) fetchHypervisorState(sandboxID string, state interface{}) error {
+	return nil
+}
+
+func (n *noopResourceStorage) storeHypervisorState(sandboxID string, state interface{}) error {
+	return nil
+}
+
+func (n *noopResourceStorage) fetchAgentState(sandboxID string, state interface{}) error {
+	return nil
+}
+
+func (n *noopResourceStorage) storeAgentState(sandboxID string, state interface{}) error {
+	return nil
+}
+
+func (n *noopResourceStorage) storeContainerResource(sandboxID, containerID string, resource sandboxResource, data interface{}) error {
+	return nil
+}
+
+func (n *noopResourceStorage) deleteContainerResources(sandboxID, containerID string, resources []sandboxResource) error {
+	return nil
+}
+
+func (n *noopResourceStorage) fetchContainerConfig(sandboxID, containerID string) (ContainerConfig, error) {
+	return ContainerConfig{}, nil
+}
+
+func (n *noopResourceStorage) fetchContainerState(sandboxID, containerID string) (State, error) {
+	return State{}, nil
+}
+
+func (n *noopResourceStorage) fetchContainerProcess(sandboxID, containerID string) (Process, error) {
+	return Process{}, nil
+}
+
+func (n *noopResourceStorage) storeContainerProcess(sandboxID, containerID string, process Process) error {
+	return nil
+}
+
+func (n *noopResourceStorage) fetchContainerMounts(sandboxID, containerID string) ([]Mount, error) {
+	return []Mount{}, nil
+}
+
+func (n *noopResourceStorage) storeContainerMounts(sandboxID, containerID string, mounts []Mount) error {
+	return nil
+}
+
+func (n *noopResourceStorage) fetchContainerDevices(sandboxID, containerID string) ([]ContainerDevice, error) {
+	return []ContainerDevice{}, nil
+}
+
+func (n *noopResourceStorage) storeContainerDevices(sandboxID, containerID string, devices []ContainerDevice) error {
+	return nil
+}

virtcontainers/noop_resource_storage_test.go

@@ -0,0 +1,188 @@
+// Copyright (c) 2018 Intel Corporation
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+
+package virtcontainers
+
+import (
+	"testing"
+
+	"github.com/kata-containers/runtime/virtcontainers/device/api"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestNoopCreateAllResources(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	err := n.createAllResources(nil)
+	assert.Nil(t, err)
+}
+
+func TestNoopContainerURI(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	_, _, err := n.containerURI("", "", 0)
+	assert.Nil(t, err)
+}
+
+func TestNoopSandboxURI(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	_, _, err := n.sandboxURI("", 0)
+	assert.Nil(t, err)
+}
+
+func TestNoopStoreSandboxResource(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	err := n.storeSandboxResource("", 0, nil)
+	assert.Nil(t, err)
+}
+
+func TestNoopDeleteSandboxResources(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	err := n.deleteSandboxResources("", []sandboxResource{0})
+	assert.Nil(t, err)
+}
+
+func TestNoopFetchSandboxConfig(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	_, err := n.fetchSandboxConfig("")
+	assert.Nil(t, err)
+}
+
+func TestNoopFetchSandboxState(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	_, err := n.fetchSandboxState("")
+	assert.Nil(t, err)
+}
+
+func TestNoopFetchSandboxNetwork(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	_, err := n.fetchSandboxNetwork("")
+	assert.Nil(t, err)
+}
+
+func TestNoopStoreSandboxNetwork(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	err := n.storeSandboxNetwork("", NetworkNamespace{})
+	assert.Nil(t, err)
+}
+
+func TestNoopFetchSandboxDevices(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	_, err := n.fetchSandboxDevices("")
+	assert.Nil(t, err)
+}
+
+func TestNoopStoreSandboxDevices(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	err := n.storeSandboxDevices("", []api.Device{})
+	assert.Nil(t, err)
+}
+
+func TestNoopFetchHypervisorState(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	err := n.fetchHypervisorState("", nil)
+	assert.Nil(t, err)
+}
+
+func TestNoopStoreHypervisorState(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	err := n.storeHypervisorState("", nil)
+	assert.Nil(t, err)
+}
+
+func TestNoopFetchAgentState(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	err := n.fetchAgentState("", nil)
+	assert.Nil(t, err)
+}
+
+func TestNoopStoreAgentState(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	err := n.storeAgentState("", nil)
+	assert.Nil(t, err)
+}
+
+func TestNoopStoreContainerResource(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	err := n.storeContainerResource("", "", 0, nil)
+	assert.Nil(t, err)
+}
+
+func TestNoopDeleteContainerResources(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	err := n.deleteContainerResources("", "", []sandboxResource{0})
+	assert.Nil(t, err)
+}
+
+func TestNoopFetchContainerConfig(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	_, err := n.fetchContainerConfig("", "")
+	assert.Nil(t, err)
+}
+
+func TestNoopFetchContainerState(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	_, err := n.fetchContainerState("", "")
+	assert.Nil(t, err)
+}
+
+func TestNoopFetchContainerProcess(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	_, err := n.fetchContainerProcess("", "")
+	assert.Nil(t, err)
+}
+
+func TestNoopStoreContainerProcess(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	err := n.storeContainerProcess("", "", Process{})
+	assert.Nil(t, err)
+}
+
+func TestNoopFetchContainerMounts(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	_, err := n.fetchContainerMounts("", "")
+	assert.Nil(t, err)
+}
+
+func TestNoopStoreContainerMounts(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	err := n.storeContainerMounts("", "", []Mount{})
+	assert.Nil(t, err)
+}
+
+func TestNoopFetchContainerDevices(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	_, err := n.fetchContainerDevices("", "")
+	assert.Nil(t, err)
+}
+
+func TestNoopStoreContainerDevices(t *testing.T) {
+	n := &noopResourceStorage{}
+
+	err := n.storeContainerDevices("", "", []ContainerDevice{})
+	assert.Nil(t, err)
+}