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moby--moby/integration-cli/docker_cli_start_volume_driver_unix_test.go
Brian Goff 9ca4aa4797 Merge pull request #15798 from calavera/volume_driver_host_config
Move VolumeDriver to HostConfig to make containers portable.
2015-09-08 22:05:40 -04:00

364 lines
11 KiB
Go

// +build !windows
package main
import (
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"net/http/httptest"
"os"
"os/exec"
"path/filepath"
"strings"
"time"
"github.com/go-check/check"
)
func init() {
check.Suite(&DockerExternalVolumeSuite{
ds: &DockerSuite{},
})
}
type eventCounter struct {
activations int
creations int
removals int
mounts int
unmounts int
paths int
}
type DockerExternalVolumeSuite struct {
server *httptest.Server
ds *DockerSuite
d *Daemon
ec *eventCounter
}
func (s *DockerExternalVolumeSuite) SetUpTest(c *check.C) {
s.d = NewDaemon(c)
s.ec = &eventCounter{}
}
func (s *DockerExternalVolumeSuite) TearDownTest(c *check.C) {
s.d.Stop()
s.ds.TearDownTest(c)
}
func (s *DockerExternalVolumeSuite) SetUpSuite(c *check.C) {
mux := http.NewServeMux()
s.server = httptest.NewServer(mux)
type pluginRequest struct {
name string
}
mux.HandleFunc("/Plugin.Activate", func(w http.ResponseWriter, r *http.Request) {
s.ec.activations++
w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
fmt.Fprintln(w, `{"Implements": ["VolumeDriver"]}`)
})
mux.HandleFunc("/VolumeDriver.Create", func(w http.ResponseWriter, r *http.Request) {
s.ec.creations++
w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
fmt.Fprintln(w, `{}`)
})
mux.HandleFunc("/VolumeDriver.Remove", func(w http.ResponseWriter, r *http.Request) {
s.ec.removals++
w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
fmt.Fprintln(w, `{}`)
})
mux.HandleFunc("/VolumeDriver.Path", func(w http.ResponseWriter, r *http.Request) {
s.ec.paths++
var pr pluginRequest
if err := json.NewDecoder(r.Body).Decode(&pr); err != nil {
http.Error(w, err.Error(), 500)
}
p := hostVolumePath(pr.name)
w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
fmt.Fprintln(w, fmt.Sprintf("{\"Mountpoint\": \"%s\"}", p))
})
mux.HandleFunc("/VolumeDriver.Mount", func(w http.ResponseWriter, r *http.Request) {
s.ec.mounts++
var pr pluginRequest
if err := json.NewDecoder(r.Body).Decode(&pr); err != nil {
http.Error(w, err.Error(), 500)
}
p := hostVolumePath(pr.name)
if err := os.MkdirAll(p, 0755); err != nil {
http.Error(w, err.Error(), 500)
}
if err := ioutil.WriteFile(filepath.Join(p, "test"), []byte(s.server.URL), 0644); err != nil {
http.Error(w, err.Error(), 500)
}
w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
fmt.Fprintln(w, fmt.Sprintf("{\"Mountpoint\": \"%s\"}", p))
})
mux.HandleFunc("/VolumeDriver.Unmount", func(w http.ResponseWriter, r *http.Request) {
s.ec.unmounts++
var pr pluginRequest
if err := json.NewDecoder(r.Body).Decode(&pr); err != nil {
http.Error(w, err.Error(), 500)
}
w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
fmt.Fprintln(w, `{}`)
})
if err := os.MkdirAll("/etc/docker/plugins", 0755); err != nil {
c.Fatal(err)
}
if err := ioutil.WriteFile("/etc/docker/plugins/test-external-volume-driver.spec", []byte(s.server.URL), 0644); err != nil {
c.Fatal(err)
}
}
func (s *DockerExternalVolumeSuite) TearDownSuite(c *check.C) {
s.server.Close()
if err := os.RemoveAll("/etc/docker/plugins"); err != nil {
c.Fatal(err)
}
}
func (s *DockerExternalVolumeSuite) TestStartExternalNamedVolumeDriver(c *check.C) {
if err := s.d.StartWithBusybox(); err != nil {
c.Fatal(err)
}
out, err := s.d.Cmd("run", "--rm", "--name", "test-data", "-v", "external-volume-test:/tmp/external-volume-test", "--volume-driver", "test-external-volume-driver", "busybox:latest", "cat", "/tmp/external-volume-test/test")
if err != nil {
c.Fatal(out, err)
}
if !strings.Contains(out, s.server.URL) {
c.Fatalf("External volume mount failed. Output: %s\n", out)
}
p := hostVolumePath("external-volume-test")
_, err = os.Lstat(p)
if err == nil {
c.Fatalf("Expected error checking volume path in host: %s\n", p)
}
if !os.IsNotExist(err) {
c.Fatalf("Expected volume path in host to not exist: %s, %v\n", p, err)
}
c.Assert(s.ec.activations, check.Equals, 1)
c.Assert(s.ec.creations, check.Equals, 1)
c.Assert(s.ec.removals, check.Equals, 1)
c.Assert(s.ec.mounts, check.Equals, 1)
c.Assert(s.ec.unmounts, check.Equals, 1)
}
func (s *DockerExternalVolumeSuite) TestStartExternalVolumeUnnamedDriver(c *check.C) {
if err := s.d.StartWithBusybox(); err != nil {
c.Fatal(err)
}
out, err := s.d.Cmd("run", "--rm", "--name", "test-data", "-v", "/tmp/external-volume-test", "--volume-driver", "test-external-volume-driver", "busybox:latest", "cat", "/tmp/external-volume-test/test")
if err != nil {
c.Fatal(err)
}
if !strings.Contains(out, s.server.URL) {
c.Fatalf("External volume mount failed. Output: %s\n", out)
}
c.Assert(s.ec.activations, check.Equals, 1)
c.Assert(s.ec.creations, check.Equals, 1)
c.Assert(s.ec.removals, check.Equals, 1)
c.Assert(s.ec.mounts, check.Equals, 1)
c.Assert(s.ec.unmounts, check.Equals, 1)
}
func (s DockerExternalVolumeSuite) TestStartExternalVolumeDriverVolumesFrom(c *check.C) {
if err := s.d.StartWithBusybox(); err != nil {
c.Fatal(err)
}
out, err := s.d.Cmd("run", "-d", "--name", "vol-test1", "-v", "/foo", "--volume-driver", "test-external-volume-driver", "busybox:latest")
c.Assert(err, check.IsNil, check.Commentf(out))
out, err = s.d.Cmd("run", "--rm", "--volumes-from", "vol-test1", "--name", "vol-test2", "busybox", "ls", "/tmp")
c.Assert(err, check.IsNil, check.Commentf(out))
out, err = s.d.Cmd("rm", "-fv", "vol-test1")
c.Assert(err, check.IsNil, check.Commentf(out))
c.Assert(s.ec.activations, check.Equals, 1)
c.Assert(s.ec.creations, check.Equals, 1)
c.Assert(s.ec.removals, check.Equals, 1)
c.Assert(s.ec.mounts, check.Equals, 2)
c.Assert(s.ec.unmounts, check.Equals, 2)
}
func (s DockerExternalVolumeSuite) TestStartExternalVolumeDriverDeleteContainer(c *check.C) {
if err := s.d.StartWithBusybox(); err != nil {
c.Fatal(err)
}
if out, err := s.d.Cmd("run", "-d", "--name", "vol-test1", "-v", "/foo", "--volume-driver", "test-external-volume-driver", "busybox:latest"); err != nil {
c.Fatal(out, err)
}
if out, err := s.d.Cmd("rm", "-fv", "vol-test1"); err != nil {
c.Fatal(out, err)
}
c.Assert(s.ec.activations, check.Equals, 1)
c.Assert(s.ec.creations, check.Equals, 1)
c.Assert(s.ec.removals, check.Equals, 1)
c.Assert(s.ec.mounts, check.Equals, 1)
c.Assert(s.ec.unmounts, check.Equals, 1)
}
func hostVolumePath(name string) string {
return fmt.Sprintf("/var/lib/docker/volumes/%s", name)
}
func (s *DockerExternalVolumeSuite) TestStartExternalNamedVolumeDriverCheckBindLocalVolume(c *check.C) {
if err := s.d.StartWithBusybox(); err != nil {
c.Fatal(err)
}
expected := s.server.URL
dockerfile := fmt.Sprintf(`FROM busybox:latest
RUN mkdir /nobindthenlocalvol
RUN echo %s > /nobindthenlocalvol/test
VOLUME ["/nobindthenlocalvol"]`, expected)
img := "test-checkbindlocalvolume"
_, err := buildImageWithOutInDamon(s.d.sock(), img, dockerfile, true)
c.Assert(err, check.IsNil)
out, err := s.d.Cmd("run", "--rm", "--name", "test-data-nobind", "-v", "external-volume-test:/tmp/external-volume-test", "--volume-driver", "test-external-volume-driver", img, "cat", "/nobindthenlocalvol/test")
c.Assert(err, check.IsNil)
if !strings.Contains(out, expected) {
c.Fatalf("External volume mount failed. Output: %s\n", out)
}
c.Assert(s.ec.activations, check.Equals, 1)
c.Assert(s.ec.creations, check.Equals, 1)
c.Assert(s.ec.removals, check.Equals, 1)
c.Assert(s.ec.mounts, check.Equals, 1)
c.Assert(s.ec.unmounts, check.Equals, 1)
}
// Make sure a request to use a down driver doesn't block other requests
func (s *DockerExternalVolumeSuite) TestStartExternalVolumeDriverLookupNotBlocked(c *check.C) {
specPath := "/etc/docker/plugins/down-driver.spec"
err := ioutil.WriteFile("/etc/docker/plugins/down-driver.spec", []byte("tcp://127.0.0.7:9999"), 0644)
c.Assert(err, check.IsNil)
defer os.RemoveAll(specPath)
chCmd1 := make(chan struct{})
chCmd2 := make(chan error)
cmd1 := exec.Command(dockerBinary, "volume", "create", "-d", "down-driver")
cmd2 := exec.Command(dockerBinary, "volume", "create")
c.Assert(cmd1.Start(), check.IsNil)
defer cmd1.Process.Kill()
time.Sleep(100 * time.Millisecond) // ensure API has been called
c.Assert(cmd2.Start(), check.IsNil)
go func() {
cmd1.Wait()
close(chCmd1)
}()
go func() {
chCmd2 <- cmd2.Wait()
}()
select {
case <-chCmd1:
cmd2.Process.Kill()
c.Fatalf("volume create with down driver finished unexpectedly")
case err := <-chCmd2:
c.Assert(err, check.IsNil, check.Commentf("error creating volume"))
case <-time.After(5 * time.Second):
c.Fatal("volume creates are blocked by previous create requests when previous driver is down")
cmd2.Process.Kill()
}
}
func (s *DockerExternalVolumeSuite) TestStartExternalVolumeDriverRetryNotImmediatelyExists(c *check.C) {
if err := s.d.StartWithBusybox(); err != nil {
c.Fatal(err)
}
specPath := "/etc/docker/plugins/test-external-volume-driver-retry.spec"
os.RemoveAll(specPath)
defer os.RemoveAll(specPath)
errchan := make(chan error)
go func() {
if out, err := s.d.Cmd("run", "--rm", "--name", "test-data-retry", "-v", "external-volume-test:/tmp/external-volume-test", "--volume-driver", "test-external-volume-driver-retry", "busybox:latest"); err != nil {
errchan <- fmt.Errorf("%v:\n%s", err, out)
}
close(errchan)
}()
go func() {
// wait for a retry to occur, then create spec to allow plugin to register
time.Sleep(2000 * time.Millisecond)
if err := ioutil.WriteFile(specPath, []byte(s.server.URL), 0644); err != nil {
c.Fatal(err)
}
}()
select {
case err := <-errchan:
if err != nil {
c.Fatal(err)
}
case <-time.After(8 * time.Second):
c.Fatal("volume creates fail when plugin not immediately available")
}
c.Assert(s.ec.activations, check.Equals, 1)
c.Assert(s.ec.creations, check.Equals, 1)
c.Assert(s.ec.removals, check.Equals, 1)
c.Assert(s.ec.mounts, check.Equals, 1)
c.Assert(s.ec.unmounts, check.Equals, 1)
}
func (s *DockerExternalVolumeSuite) TestStartExternalVolumeDriverBindExternalVolume(c *check.C) {
dockerCmd(c, "volume", "create", "-d", "test-external-volume-driver", "--name", "foo")
dockerCmd(c, "run", "-d", "--name", "testing", "-v", "foo:/bar", "busybox", "top")
var mounts []struct {
Name string
Driver string
}
out, err := inspectFieldJSON("testing", "Mounts")
c.Assert(err, check.IsNil)
c.Assert(json.NewDecoder(strings.NewReader(out)).Decode(&mounts), check.IsNil)
c.Assert(len(mounts), check.Equals, 1, check.Commentf(out))
c.Assert(mounts[0].Name, check.Equals, "foo")
c.Assert(mounts[0].Driver, check.Equals, "test-external-volume-driver")
}