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moby--moby/integration-cli/docker_cli_start_volume_driver_unix_test.go
David Calavera 333ac3a3eb Plugins JSON spec.
Allow full configuration of external plugins via a JSON document.

Signed-off-by: David Calavera <david.calavera@gmail.com>
2015-06-29 10:32:18 -07:00

247 lines
6.5 KiB
Go

// +build experimental
// +build !windows
package main
import (
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"net/http/httptest"
"os"
"path/filepath"
"strings"
"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)
}
p := hostVolumePath(pr.name)
if err := os.RemoveAll(p); 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("/usr/share/docker/plugins", 0755); err != nil {
c.Fatal(err)
}
if err := ioutil.WriteFile("/usr/share/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("/usr/share/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(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)
}
if _, err := s.d.Cmd("run", "-d", "--name", "vol-test1", "-v", "/foo", "--volume-driver", "test-external-volume-driver", "busybox:latest"); err != nil {
c.Fatal(err)
}
if _, err := s.d.Cmd("run", "--rm", "--volumes-from", "vol-test1", "--name", "vol-test2", "busybox", "ls", "/tmp"); err != nil {
c.Fatal(err)
}
if _, err := s.d.Cmd("rm", "-f", "vol-test1"); err != nil {
c.Fatal(err)
}
c.Assert(s.ec.activations, check.Equals, 1)
c.Assert(s.ec.creations, check.Equals, 2)
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 _, err := s.d.Cmd("run", "-d", "--name", "vol-test1", "-v", "/foo", "--volume-driver", "test-external-volume-driver", "busybox:latest"); err != nil {
c.Fatal(err)
}
if _, err := s.d.Cmd("rm", "-fv", "vol-test1"); err != nil {
c.Fatal(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)
}