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mocks.go
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mocks.go
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//
// (C) Copyright 2019 Intel Corporation.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// GOVERNMENT LICENSE RIGHTS-OPEN SOURCE SOFTWARE
// The Government's rights to use, modify, reproduce, release, perform, display,
// or disclose this software are subject to the terms of the Apache License as
// provided in Contract No. 8F-30005.
// Any reproduction of computer software, computer software documentation, or
// portions thereof marked with this legend must also reproduce the markings.
//
package scm
import (
"os"
"strings"
"github.com/daos-stack/daos/src/control/logging"
"github.com/daos-stack/daos/src/control/server/storage"
)
type (
MockSysConfig struct {
IsMountedBool bool
IsMountedErr error
MountErr error
UnmountErr error
MkfsErr error
GetfsStr string
GetfsErr error
}
MockSysProvider struct {
cfg MockSysConfig
}
)
func (msp *MockSysProvider) IsMounted(target string) (bool, error) {
// hack... don't fail the format tests which also want
// to make sure that the device isn't already formatted.
if os.IsNotExist(msp.cfg.IsMountedErr) && strings.HasPrefix(target, "/dev") {
return msp.cfg.IsMountedBool, nil
}
return msp.cfg.IsMountedBool, msp.cfg.IsMountedErr
}
func (msp *MockSysProvider) Mount(_, _, _ string, _ uintptr, _ string) error {
if msp.cfg.MountErr == nil {
msp.cfg.IsMountedBool = true
}
return msp.cfg.MountErr
}
func (msp *MockSysProvider) Unmount(_ string, _ int) error {
if msp.cfg.UnmountErr == nil {
msp.cfg.IsMountedBool = false
}
return msp.cfg.UnmountErr
}
func (msp *MockSysProvider) Mkfs(_, _ string, _ bool) error {
return msp.cfg.MkfsErr
}
func (msp *MockSysProvider) Getfs(_ string) (string, error) {
return msp.cfg.GetfsStr, msp.cfg.GetfsErr
}
func NewMockSysProvider(cfg *MockSysConfig) *MockSysProvider {
if cfg == nil {
cfg = &MockSysConfig{}
}
return &MockSysProvider{
cfg: *cfg,
}
}
func DefaultMockSysProvider() *MockSysProvider {
return NewMockSysProvider(nil)
}
// MockBackendConfig specifies behaviour for a mock SCM backend
// implementation providing capability to access and configure
// SCM modules and namespaces.
type MockBackendConfig struct {
DiscoverRes storage.ScmModules
DiscoverErr error
GetNamespaceRes storage.ScmNamespaces
GetNamespaceErr error
GetStateErr error
StartingState storage.ScmState
NextState storage.ScmState
PrepNeedsReboot bool
PrepNamespaceRes storage.ScmNamespaces
PrepErr error
}
type MockBackend struct {
curState storage.ScmState
cfg MockBackendConfig
}
func (mb *MockBackend) Discover() (storage.ScmModules, error) {
return mb.cfg.DiscoverRes, mb.cfg.DiscoverErr
}
func (mb *MockBackend) GetNamespaces() (storage.ScmNamespaces, error) {
return mb.cfg.GetNamespaceRes, mb.cfg.GetNamespaceErr
}
func (mb *MockBackend) GetState() (storage.ScmState, error) {
if mb.cfg.GetStateErr != nil {
return storage.ScmStateUnknown, mb.cfg.GetStateErr
}
return mb.curState, nil
}
func (mb *MockBackend) Prep(_ storage.ScmState) (bool, storage.ScmNamespaces, error) {
if mb.cfg.PrepErr == nil {
mb.curState = mb.cfg.NextState
}
return mb.cfg.PrepNeedsReboot, mb.cfg.PrepNamespaceRes, mb.cfg.PrepErr
}
func (mb *MockBackend) PrepReset(_ storage.ScmState) (bool, error) {
if mb.cfg.PrepErr == nil {
mb.curState = mb.cfg.NextState
}
return mb.cfg.PrepNeedsReboot, mb.cfg.PrepErr
}
func NewMockBackend(cfg *MockBackendConfig) *MockBackend {
if cfg == nil {
cfg = &MockBackendConfig{}
}
return &MockBackend{
curState: cfg.StartingState,
cfg: *cfg,
}
}
func DefaultMockBackend() *MockBackend {
return NewMockBackend(nil)
}
func NewMockProvider(log logging.Logger, mbc *MockBackendConfig, msc *MockSysConfig) *Provider {
return NewProvider(log, NewMockBackend(mbc), NewMockSysProvider(msc)).WithForwardingDisabled()
}
func DefaultMockProvider(log logging.Logger) *Provider {
return NewProvider(log, DefaultMockBackend(), DefaultMockSysProvider()).WithForwardingDisabled()
}