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gocsi_test.go
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gocsi_test.go
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package gocsi_test
import (
"bufio"
"context"
"errors"
"fmt"
"io"
"io/ioutil"
"net"
"os"
"os/exec"
"path"
"strconv"
"strings"
"time"
"github.com/onsi/ginkgo"
gomegaTypes "github.com/onsi/gomega/types"
"google.golang.org/grpc"
"github.com/codedellemc/gocsi"
"github.com/codedellemc/gocsi/csi"
)
const (
mockPkg = "github.com/codedellemc/gocsi/mock"
pluginName = "mock"
)
var (
mockBinPath = os.Getenv("GOCSI_MOCK")
csiEndpoint = os.Getenv(gocsi.CSIEndpoint)
)
func init() {
// Do not worry about initializing the properties used to
// start a mock server if CSI_ENDPOINT is already defined
if csiEndpoint != "" {
return
}
if mockBinPath == "" {
exe, err := os.Executable()
if err != nil {
panic(err)
}
mockBinPath = path.Join(path.Dir(exe), "mock")
out, err := exec.Command(
"go", "build", "-o", mockBinPath, mockPkg).CombinedOutput()
if err != nil {
panic(fmt.Errorf("error: build mock failed: %v\n%v",
err, string(out)))
}
}
if _, err := os.Stat(mockBinPath); err != nil {
panic(err)
}
}
func startMockServer(
ctx context.Context) (*grpc.ClientConn, func(), error) {
return startMockServerWithOptions(ctx, false)
}
func startMockServerWithOptions(
ctx context.Context,
impliedSockFile bool) (*grpc.ClientConn, func(), error) {
// If CSI_ENDPOINT was defined then use the external server.
if csiEndpoint != "" {
fmt.Fprintf(GinkgoWriter, "created csi client: %s\n", csiEndpoint)
client, err := newGrpcClient(ctx, csiEndpoint)
if err != nil {
panic(err)
}
return client, func() {}, nil
}
f, _ := ioutil.TempFile("", "")
sockFile := f.Name()
Ω(f.Close()).ShouldNot(HaveOccurred())
Ω(os.RemoveAll(sockFile)).ShouldNot(HaveOccurred())
endpoint := sockFile
if !impliedSockFile {
endpoint = fmt.Sprintf("unix://%s", endpoint)
}
fmt.Fprintf(GinkgoWriter, "determined csi endpoint: %s\n", endpoint)
cmd := exec.Command(mockBinPath)
cmd.Env = os.Environ()
cmd.Env = append(cmd.Env,
fmt.Sprintf("%s=%s", gocsi.CSIEndpoint, endpoint))
var (
err error
stdout io.Reader
stderr io.Reader
debug, _ = strconv.ParseBool(os.Getenv("GOCSI_TEST_DEBUG"))
)
stdout, err = cmd.StdoutPipe()
Ω(err).ShouldNot(HaveOccurred())
if debug {
stderr, err = cmd.StderrPipe()
Ω(err).ShouldNot(HaveOccurred())
}
if err = cmd.Start(); err != nil {
return nil, nil, err
}
chServed := make(chan bool)
go func() {
scan := bufio.NewScanner(stdout)
for scan.Scan() {
l := scan.Text()
if strings.Contains(l, pluginName+".Serve:") {
chServed <- true
}
if debug {
fmt.Fprintf(os.Stdout, l)
}
}
close(chServed)
}()
if debug {
go func() {
scan := bufio.NewScanner(stderr)
for scan.Scan() {
os.Stderr.Write(scan.Bytes())
}
}()
}
started := <-chServed
if !started {
return nil, nil, cmd.Wait()
}
client, err := newGrpcClient(ctx, endpoint)
if err != nil {
fmt.Fprintf(GinkgoWriter, "error creating csi client: %v", err)
return nil, nil, cmd.Wait()
}
fmt.Fprintf(GinkgoWriter, "created csi client: %s\n", endpoint)
stopMock := func() {
Ω(cmd.Process.Signal(os.Interrupt)).ShouldNot(HaveOccurred())
Ω(cmd.Wait()).ShouldNot(HaveOccurred())
os.RemoveAll(sockFile)
}
return client, stopMock, nil
}
func newCSIVersion(major, minor, patch uint32) *csi.Version {
return &csi.Version{
Major: major,
Minor: minor,
Patch: patch,
}
}
var mockSupportedVersions = []*csi.Version{
newCSIVersion(0, 1, 0),
newCSIVersion(0, 2, 0),
newCSIVersion(1, 0, 0),
newCSIVersion(1, 1, 0),
}
// CTest is an alias to retrieve the current Ginko test description.
var CTest = ginkgo.CurrentGinkgoTestDescription
type gocsiErrMatcher struct {
exp *gocsi.Error
}
func (m *gocsiErrMatcher) Match(actual interface{}) (bool, error) {
act, ok := actual.(*gocsi.Error)
if !ok {
return false, errors.New("gocsiErrMatcher expects a *gocsi.Error")
}
if m.exp.Code != act.Code {
return false, nil
}
if m.exp.Description != act.Description {
return false, nil
}
if m.exp.FullMethod != act.FullMethod {
return false, nil
}
return true, nil
}
func (m *gocsiErrMatcher) FailureMessage(actual interface{}) string {
return fmt.Sprintf(
"Expected\n\t%#v\nto be equal to\n\t%#v", actual, m.exp)
}
func (m *gocsiErrMatcher) NegatedFailureMessage(actual interface{}) string {
return fmt.Sprintf(
"Expected\n\t%#v\nnot to be equal to\n\t%#v", actual, m.exp)
}
// Σ is a custom Ginkgo matcher that compares two GoCSI errors.
func Σ(a *gocsi.Error) gomegaTypes.GomegaMatcher {
return &gocsiErrMatcher{exp: a}
}
func newGrpcClient(
ctx context.Context,
endpoint string) (*grpc.ClientConn, error) {
dialOpts := []grpc.DialOption{
grpc.WithInsecure(),
grpc.WithUnaryInterceptor(gocsi.ChainUnaryClient(
gocsi.ClientCheckReponseError,
gocsi.ClientResponseValidator)),
grpc.WithDialer(
func(target string, timeout time.Duration) (net.Conn, error) {
proto, addr, err := gocsi.ParseProtoAddr(target)
if err != nil {
return nil, err
}
return net.DialTimeout(proto, addr, timeout)
}),
}
return grpc.DialContext(ctx, endpoint, dialOpts...)
}