1276 lines
34 KiB
Go
1276 lines
34 KiB
Go
package main
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import (
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"bytes"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"io/ioutil"
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"net"
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"net/http"
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"net/http/httptest"
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"net/http/httputil"
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"net/url"
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"os"
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"os/exec"
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"path"
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"path/filepath"
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"strconv"
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"strings"
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"time"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/opts"
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"github.com/docker/docker/pkg/ioutils"
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"github.com/docker/docker/pkg/stringutils"
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"github.com/go-check/check"
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)
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// Daemon represents a Docker daemon for the testing framework.
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type Daemon struct {
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c *check.C
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logFile *os.File
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folder string
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stdin io.WriteCloser
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stdout, stderr io.ReadCloser
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cmd *exec.Cmd
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storageDriver string
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execDriver string
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wait chan error
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userlandProxy bool
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}
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func enableUserlandProxy() bool {
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if env := os.Getenv("DOCKER_USERLANDPROXY"); env != "" {
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if val, err := strconv.ParseBool(env); err != nil {
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return val
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}
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}
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return true
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}
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// NewDaemon returns a Daemon instance to be used for testing.
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// This will create a directory such as d123456789 in the folder specified by $DEST.
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// The daemon will not automatically start.
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func NewDaemon(c *check.C) *Daemon {
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dest := os.Getenv("DEST")
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if dest == "" {
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c.Fatal("Please set the DEST environment variable")
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}
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dir := filepath.Join(dest, fmt.Sprintf("d%d", time.Now().UnixNano()%100000000))
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daemonFolder, err := filepath.Abs(dir)
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if err != nil {
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c.Fatalf("Could not make %q an absolute path: %v", dir, err)
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}
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if err := os.MkdirAll(filepath.Join(daemonFolder, "graph"), 0600); err != nil {
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c.Fatalf("Could not create %s/graph directory", daemonFolder)
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}
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userlandProxy := true
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if env := os.Getenv("DOCKER_USERLANDPROXY"); env != "" {
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if val, err := strconv.ParseBool(env); err != nil {
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userlandProxy = val
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}
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}
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return &Daemon{
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c: c,
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folder: daemonFolder,
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storageDriver: os.Getenv("DOCKER_GRAPHDRIVER"),
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execDriver: os.Getenv("DOCKER_EXECDRIVER"),
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userlandProxy: userlandProxy,
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}
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}
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// Start will start the daemon and return once it is ready to receive requests.
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// You can specify additional daemon flags.
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func (d *Daemon) Start(arg ...string) error {
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dockerBinary, err := exec.LookPath(dockerBinary)
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if err != nil {
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d.c.Fatalf("could not find docker binary in $PATH: %v", err)
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}
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args := []string{
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"--host", d.sock(),
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"--daemon",
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"--graph", fmt.Sprintf("%s/graph", d.folder),
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"--pidfile", fmt.Sprintf("%s/docker.pid", d.folder),
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fmt.Sprintf("--userland-proxy=%t", d.userlandProxy),
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}
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// If we don't explicitly set the log-level or debug flag(-D) then
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// turn on debug mode
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foundIt := false
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for _, a := range arg {
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if strings.Contains(a, "--log-level") || strings.Contains(a, "-D") {
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foundIt = true
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}
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}
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if !foundIt {
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args = append(args, "--debug")
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}
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if d.storageDriver != "" {
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args = append(args, "--storage-driver", d.storageDriver)
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}
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if d.execDriver != "" {
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args = append(args, "--exec-driver", d.execDriver)
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}
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args = append(args, arg...)
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d.cmd = exec.Command(dockerBinary, args...)
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d.logFile, err = os.OpenFile(filepath.Join(d.folder, "docker.log"), os.O_RDWR|os.O_CREATE|os.O_APPEND, 0600)
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if err != nil {
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d.c.Fatalf("Could not create %s/docker.log: %v", d.folder, err)
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}
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d.cmd.Stdout = d.logFile
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d.cmd.Stderr = d.logFile
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if err := d.cmd.Start(); err != nil {
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return fmt.Errorf("could not start daemon container: %v", err)
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}
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wait := make(chan error)
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go func() {
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wait <- d.cmd.Wait()
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d.c.Log("exiting daemon")
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close(wait)
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}()
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d.wait = wait
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tick := time.Tick(500 * time.Millisecond)
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// make sure daemon is ready to receive requests
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startTime := time.Now().Unix()
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for {
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d.c.Log("waiting for daemon to start")
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if time.Now().Unix()-startTime > 5 {
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// After 5 seconds, give up
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return errors.New("Daemon exited and never started")
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}
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select {
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case <-time.After(2 * time.Second):
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return errors.New("timeout: daemon does not respond")
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case <-tick:
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c, err := net.Dial("unix", filepath.Join(d.folder, "docker.sock"))
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if err != nil {
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continue
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}
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client := httputil.NewClientConn(c, nil)
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defer client.Close()
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req, err := http.NewRequest("GET", "/_ping", nil)
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if err != nil {
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d.c.Fatalf("could not create new request: %v", err)
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}
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resp, err := client.Do(req)
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if err != nil {
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continue
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}
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if resp.StatusCode != http.StatusOK {
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d.c.Logf("received status != 200 OK: %s", resp.Status)
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}
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d.c.Log("daemon started")
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return nil
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}
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}
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}
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// StartWithBusybox will first start the daemon with Daemon.Start()
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// then save the busybox image from the main daemon and load it into this Daemon instance.
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func (d *Daemon) StartWithBusybox(arg ...string) error {
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if err := d.Start(arg...); err != nil {
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return err
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}
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bb := filepath.Join(d.folder, "busybox.tar")
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if _, err := os.Stat(bb); err != nil {
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if !os.IsNotExist(err) {
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return fmt.Errorf("unexpected error on busybox.tar stat: %v", err)
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}
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// saving busybox image from main daemon
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if err := exec.Command(dockerBinary, "save", "--output", bb, "busybox:latest").Run(); err != nil {
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return fmt.Errorf("could not save busybox image: %v", err)
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}
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}
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// loading busybox image to this daemon
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if _, err := d.Cmd("load", "--input", bb); err != nil {
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return fmt.Errorf("could not load busybox image: %v", err)
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}
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if err := os.Remove(bb); err != nil {
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d.c.Logf("Could not remove %s: %v", bb, err)
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}
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return nil
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}
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// Stop will send a SIGINT every second and wait for the daemon to stop.
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// If it timeouts, a SIGKILL is sent.
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// Stop will not delete the daemon directory. If a purged daemon is needed,
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// instantiate a new one with NewDaemon.
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func (d *Daemon) Stop() error {
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if d.cmd == nil || d.wait == nil {
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return errors.New("daemon not started")
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}
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defer func() {
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d.logFile.Close()
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d.cmd = nil
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}()
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i := 1
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tick := time.Tick(time.Second)
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if err := d.cmd.Process.Signal(os.Interrupt); err != nil {
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return fmt.Errorf("could not send signal: %v", err)
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}
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out1:
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for {
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select {
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case err := <-d.wait:
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return err
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case <-time.After(15 * time.Second):
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// time for stopping jobs and run onShutdown hooks
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d.c.Log("timeout")
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break out1
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}
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}
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out2:
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for {
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select {
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case err := <-d.wait:
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return err
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case <-tick:
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i++
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if i > 4 {
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d.c.Logf("tried to interrupt daemon for %d times, now try to kill it", i)
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break out2
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}
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d.c.Logf("Attempt #%d: daemon is still running with pid %d", i, d.cmd.Process.Pid)
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if err := d.cmd.Process.Signal(os.Interrupt); err != nil {
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return fmt.Errorf("could not send signal: %v", err)
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}
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}
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}
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if err := d.cmd.Process.Kill(); err != nil {
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d.c.Logf("Could not kill daemon: %v", err)
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return err
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}
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return nil
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}
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// Restart will restart the daemon by first stopping it and then starting it.
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func (d *Daemon) Restart(arg ...string) error {
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d.Stop()
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return d.Start(arg...)
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}
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func (d *Daemon) sock() string {
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return fmt.Sprintf("unix://%s/docker.sock", d.folder)
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}
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// Cmd will execute a docker CLI command against this Daemon.
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// Example: d.Cmd("version") will run docker -H unix://path/to/unix.sock version
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func (d *Daemon) Cmd(name string, arg ...string) (string, error) {
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args := []string{"--host", d.sock(), name}
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args = append(args, arg...)
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c := exec.Command(dockerBinary, args...)
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b, err := c.CombinedOutput()
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return string(b), err
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}
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// CmdWithArgs will execute a docker CLI command against a daemon with the
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// given additional arguments
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func (d *Daemon) CmdWithArgs(daemonArgs []string, name string, arg ...string) (string, error) {
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args := append(daemonArgs, name)
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args = append(args, arg...)
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c := exec.Command(dockerBinary, args...)
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b, err := c.CombinedOutput()
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return string(b), err
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}
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// LogfileName returns the path the the daemon's log file
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func (d *Daemon) LogfileName() string {
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return d.logFile.Name()
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}
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func daemonHost() string {
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daemonURLStr := "unix://" + opts.DefaultUnixSocket
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if daemonHostVar := os.Getenv("DOCKER_HOST"); daemonHostVar != "" {
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daemonURLStr = daemonHostVar
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}
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return daemonURLStr
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}
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func sockConn(timeout time.Duration) (net.Conn, error) {
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daemon := daemonHost()
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daemonURL, err := url.Parse(daemon)
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if err != nil {
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return nil, fmt.Errorf("could not parse url %q: %v", daemon, err)
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}
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var c net.Conn
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switch daemonURL.Scheme {
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case "unix":
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return net.DialTimeout(daemonURL.Scheme, daemonURL.Path, timeout)
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case "tcp":
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return net.DialTimeout(daemonURL.Scheme, daemonURL.Host, timeout)
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default:
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return c, fmt.Errorf("unknown scheme %v (%s)", daemonURL.Scheme, daemon)
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}
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}
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func sockRequest(method, endpoint string, data interface{}) (int, []byte, error) {
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jsonData := bytes.NewBuffer(nil)
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if err := json.NewEncoder(jsonData).Encode(data); err != nil {
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return -1, nil, err
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}
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res, body, err := sockRequestRaw(method, endpoint, jsonData, "application/json")
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if err != nil {
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b, _ := ioutil.ReadAll(body)
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return -1, b, err
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}
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var b []byte
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b, err = readBody(body)
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return res.StatusCode, b, err
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}
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func sockRequestRaw(method, endpoint string, data io.Reader, ct string) (*http.Response, io.ReadCloser, error) {
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c, err := sockConn(time.Duration(10 * time.Second))
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if err != nil {
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return nil, nil, fmt.Errorf("could not dial docker daemon: %v", err)
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}
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client := httputil.NewClientConn(c, nil)
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req, err := http.NewRequest(method, endpoint, data)
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if err != nil {
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client.Close()
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return nil, nil, fmt.Errorf("could not create new request: %v", err)
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}
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if ct != "" {
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req.Header.Set("Content-Type", ct)
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}
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resp, err := client.Do(req)
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if err != nil {
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client.Close()
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return nil, nil, fmt.Errorf("could not perform request: %v", err)
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}
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body := ioutils.NewReadCloserWrapper(resp.Body, func() error {
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defer resp.Body.Close()
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return client.Close()
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})
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return resp, body, nil
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}
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func readBody(b io.ReadCloser) ([]byte, error) {
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defer b.Close()
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return ioutil.ReadAll(b)
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}
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func deleteContainer(container string) error {
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container = strings.TrimSpace(strings.Replace(container, "\n", " ", -1))
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rmArgs := strings.Split(fmt.Sprintf("rm -fv %v", container), " ")
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exitCode, err := runCommand(exec.Command(dockerBinary, rmArgs...))
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// set error manually if not set
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if exitCode != 0 && err == nil {
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err = fmt.Errorf("failed to remove container: `docker rm` exit is non-zero")
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}
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return err
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}
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func getAllContainers() (string, error) {
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getContainersCmd := exec.Command(dockerBinary, "ps", "-q", "-a")
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out, exitCode, err := runCommandWithOutput(getContainersCmd)
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if exitCode != 0 && err == nil {
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err = fmt.Errorf("failed to get a list of containers: %v\n", out)
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}
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return out, err
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}
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|
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func deleteAllContainers() error {
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containers, err := getAllContainers()
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if err != nil {
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fmt.Println(containers)
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return err
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}
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|
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if err = deleteContainer(containers); err != nil {
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return err
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}
|
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return nil
|
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}
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|
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var protectedImages = map[string]struct{}{}
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|
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func init() {
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out, err := exec.Command(dockerBinary, "images").CombinedOutput()
|
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if err != nil {
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panic(err)
|
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}
|
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lines := strings.Split(string(out), "\n")[1:]
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for _, l := range lines {
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if l == "" {
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continue
|
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}
|
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fields := strings.Fields(l)
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imgTag := fields[0] + ":" + fields[1]
|
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// just for case if we have dangling images in tested daemon
|
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if imgTag != "<none>:<none>" {
|
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protectedImages[imgTag] = struct{}{}
|
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}
|
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}
|
|
}
|
|
|
|
func deleteAllImages() error {
|
|
out, err := exec.Command(dockerBinary, "images").CombinedOutput()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
lines := strings.Split(string(out), "\n")[1:]
|
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var imgs []string
|
|
for _, l := range lines {
|
|
if l == "" {
|
|
continue
|
|
}
|
|
fields := strings.Fields(l)
|
|
imgTag := fields[0] + ":" + fields[1]
|
|
if _, ok := protectedImages[imgTag]; !ok {
|
|
if fields[0] == "<none>" {
|
|
imgs = append(imgs, fields[2])
|
|
continue
|
|
}
|
|
imgs = append(imgs, imgTag)
|
|
}
|
|
}
|
|
if len(imgs) == 0 {
|
|
return nil
|
|
}
|
|
args := append([]string{"rmi", "-f"}, imgs...)
|
|
if err := exec.Command(dockerBinary, args...).Run(); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func getPausedContainers() (string, error) {
|
|
getPausedContainersCmd := exec.Command(dockerBinary, "ps", "-f", "status=paused", "-q", "-a")
|
|
out, exitCode, err := runCommandWithOutput(getPausedContainersCmd)
|
|
if exitCode != 0 && err == nil {
|
|
err = fmt.Errorf("failed to get a list of paused containers: %v\n", out)
|
|
}
|
|
|
|
return out, err
|
|
}
|
|
|
|
func getSliceOfPausedContainers() ([]string, error) {
|
|
out, err := getPausedContainers()
|
|
if err == nil {
|
|
if len(out) == 0 {
|
|
return nil, err
|
|
}
|
|
slice := strings.Split(strings.TrimSpace(out), "\n")
|
|
return slice, err
|
|
}
|
|
return []string{out}, err
|
|
}
|
|
|
|
func unpauseContainer(container string) error {
|
|
unpauseCmd := exec.Command(dockerBinary, "unpause", container)
|
|
exitCode, err := runCommand(unpauseCmd)
|
|
if exitCode != 0 && err == nil {
|
|
err = fmt.Errorf("failed to unpause container")
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func unpauseAllContainers() error {
|
|
containers, err := getPausedContainers()
|
|
if err != nil {
|
|
fmt.Println(containers)
|
|
return err
|
|
}
|
|
|
|
containers = strings.Replace(containers, "\n", " ", -1)
|
|
containers = strings.Trim(containers, " ")
|
|
containerList := strings.Split(containers, " ")
|
|
|
|
for _, value := range containerList {
|
|
if err = unpauseContainer(value); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func deleteImages(images ...string) error {
|
|
args := []string{"rmi", "-f"}
|
|
args = append(args, images...)
|
|
rmiCmd := exec.Command(dockerBinary, args...)
|
|
exitCode, err := runCommand(rmiCmd)
|
|
// set error manually if not set
|
|
if exitCode != 0 && err == nil {
|
|
err = fmt.Errorf("failed to remove image: `docker rmi` exit is non-zero")
|
|
}
|
|
return err
|
|
}
|
|
|
|
func imageExists(image string) error {
|
|
inspectCmd := exec.Command(dockerBinary, "inspect", image)
|
|
exitCode, err := runCommand(inspectCmd)
|
|
if exitCode != 0 && err == nil {
|
|
err = fmt.Errorf("couldn't find image %q", image)
|
|
}
|
|
return err
|
|
}
|
|
|
|
func pullImageIfNotExist(image string) (err error) {
|
|
if err := imageExists(image); err != nil {
|
|
pullCmd := exec.Command(dockerBinary, "pull", image)
|
|
_, exitCode, err := runCommandWithOutput(pullCmd)
|
|
|
|
if err != nil || exitCode != 0 {
|
|
err = fmt.Errorf("image %q wasn't found locally and it couldn't be pulled: %s", image, err)
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
func dockerCmdWithError(c *check.C, args ...string) (string, int, error) {
|
|
return runCommandWithOutput(exec.Command(dockerBinary, args...))
|
|
}
|
|
|
|
func dockerCmdWithStdoutStderr(c *check.C, args ...string) (string, string, int) {
|
|
stdout, stderr, status, err := runCommandWithStdoutStderr(exec.Command(dockerBinary, args...))
|
|
c.Assert(err, check.IsNil, check.Commentf("%q failed with errors: %s, %v", strings.Join(args, " "), stderr, err))
|
|
return stdout, stderr, status
|
|
}
|
|
|
|
func dockerCmd(c *check.C, args ...string) (string, int) {
|
|
out, status, err := runCommandWithOutput(exec.Command(dockerBinary, args...))
|
|
c.Assert(err, check.IsNil, check.Commentf("%q failed with errors: %s, %v", strings.Join(args, " "), out, err))
|
|
return out, status
|
|
}
|
|
|
|
// execute a docker command with a timeout
|
|
func dockerCmdWithTimeout(timeout time.Duration, args ...string) (string, int, error) {
|
|
out, status, err := runCommandWithOutputAndTimeout(exec.Command(dockerBinary, args...), timeout)
|
|
if err != nil {
|
|
return out, status, fmt.Errorf("%q failed with errors: %v : %q)", strings.Join(args, " "), err, out)
|
|
}
|
|
return out, status, err
|
|
}
|
|
|
|
// execute a docker command in a directory
|
|
func dockerCmdInDir(c *check.C, path string, args ...string) (string, int, error) {
|
|
dockerCommand := exec.Command(dockerBinary, args...)
|
|
dockerCommand.Dir = path
|
|
out, status, err := runCommandWithOutput(dockerCommand)
|
|
if err != nil {
|
|
return out, status, fmt.Errorf("%q failed with errors: %v : %q)", strings.Join(args, " "), err, out)
|
|
}
|
|
return out, status, err
|
|
}
|
|
|
|
// execute a docker command in a directory with a timeout
|
|
func dockerCmdInDirWithTimeout(timeout time.Duration, path string, args ...string) (string, int, error) {
|
|
dockerCommand := exec.Command(dockerBinary, args...)
|
|
dockerCommand.Dir = path
|
|
out, status, err := runCommandWithOutputAndTimeout(dockerCommand, timeout)
|
|
if err != nil {
|
|
return out, status, fmt.Errorf("%q failed with errors: %v : %q)", strings.Join(args, " "), err, out)
|
|
}
|
|
return out, status, err
|
|
}
|
|
|
|
func findContainerIP(c *check.C, id string, vargs ...string) string {
|
|
args := append(vargs, "inspect", "--format='{{ .NetworkSettings.IPAddress }}'", id)
|
|
cmd := exec.Command(dockerBinary, args...)
|
|
out, _, err := runCommandWithOutput(cmd)
|
|
if err != nil {
|
|
c.Fatal(err, out)
|
|
}
|
|
|
|
return strings.Trim(out, " \r\n'")
|
|
}
|
|
|
|
func (d *Daemon) findContainerIP(id string) string {
|
|
return findContainerIP(d.c, id, "--host", d.sock())
|
|
}
|
|
|
|
func getContainerCount() (int, error) {
|
|
const containers = "Containers:"
|
|
|
|
cmd := exec.Command(dockerBinary, "info")
|
|
out, _, err := runCommandWithOutput(cmd)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
lines := strings.Split(out, "\n")
|
|
for _, line := range lines {
|
|
if strings.Contains(line, containers) {
|
|
output := strings.TrimSpace(line)
|
|
output = strings.TrimLeft(output, containers)
|
|
output = strings.Trim(output, " ")
|
|
containerCount, err := strconv.Atoi(output)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
return containerCount, nil
|
|
}
|
|
}
|
|
return 0, fmt.Errorf("couldn't find the Container count in the output")
|
|
}
|
|
|
|
// FakeContext creates directories that can be used as a build context
|
|
type FakeContext struct {
|
|
Dir string
|
|
}
|
|
|
|
// Add a file at a path, creating directories where necessary
|
|
func (f *FakeContext) Add(file, content string) error {
|
|
return f.addFile(file, []byte(content))
|
|
}
|
|
|
|
func (f *FakeContext) addFile(file string, content []byte) error {
|
|
filepath := path.Join(f.Dir, file)
|
|
dirpath := path.Dir(filepath)
|
|
if dirpath != "." {
|
|
if err := os.MkdirAll(dirpath, 0755); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return ioutil.WriteFile(filepath, content, 0644)
|
|
|
|
}
|
|
|
|
// Delete a file at a path
|
|
func (f *FakeContext) Delete(file string) error {
|
|
filepath := path.Join(f.Dir, file)
|
|
return os.RemoveAll(filepath)
|
|
}
|
|
|
|
// Close deletes the context
|
|
func (f *FakeContext) Close() error {
|
|
return os.RemoveAll(f.Dir)
|
|
}
|
|
|
|
func fakeContextFromNewTempDir() (*FakeContext, error) {
|
|
tmp, err := ioutil.TempDir("", "fake-context")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if err := os.Chmod(tmp, 0755); err != nil {
|
|
return nil, err
|
|
}
|
|
return fakeContextFromDir(tmp), nil
|
|
}
|
|
|
|
func fakeContextFromDir(dir string) *FakeContext {
|
|
return &FakeContext{dir}
|
|
}
|
|
|
|
func fakeContextWithFiles(files map[string]string) (*FakeContext, error) {
|
|
ctx, err := fakeContextFromNewTempDir()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
for file, content := range files {
|
|
if err := ctx.Add(file, content); err != nil {
|
|
ctx.Close()
|
|
return nil, err
|
|
}
|
|
}
|
|
return ctx, nil
|
|
}
|
|
|
|
func fakeContextAddDockerfile(ctx *FakeContext, dockerfile string) error {
|
|
if err := ctx.Add("Dockerfile", dockerfile); err != nil {
|
|
ctx.Close()
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func fakeContext(dockerfile string, files map[string]string) (*FakeContext, error) {
|
|
ctx, err := fakeContextWithFiles(files)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if err := fakeContextAddDockerfile(ctx, dockerfile); err != nil {
|
|
return nil, err
|
|
}
|
|
return ctx, nil
|
|
}
|
|
|
|
// FakeStorage is a static file server. It might be running locally or remotely
|
|
// on test host.
|
|
type FakeStorage interface {
|
|
Close() error
|
|
URL() string
|
|
CtxDir() string
|
|
}
|
|
|
|
func fakeBinaryStorage(archives map[string]*bytes.Buffer) (FakeStorage, error) {
|
|
ctx, err := fakeContextFromNewTempDir()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
for name, content := range archives {
|
|
if err := ctx.addFile(name, content.Bytes()); err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
return fakeStorageWithContext(ctx)
|
|
}
|
|
|
|
// fakeStorage returns either a local or remote (at daemon machine) file server
|
|
func fakeStorage(files map[string]string) (FakeStorage, error) {
|
|
ctx, err := fakeContextWithFiles(files)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return fakeStorageWithContext(ctx)
|
|
}
|
|
|
|
// fakeStorageWithContext returns either a local or remote (at daemon machine) file server
|
|
func fakeStorageWithContext(ctx *FakeContext) (FakeStorage, error) {
|
|
if isLocalDaemon {
|
|
return newLocalFakeStorage(ctx)
|
|
}
|
|
return newRemoteFileServer(ctx)
|
|
}
|
|
|
|
// localFileStorage is a file storage on the running machine
|
|
type localFileStorage struct {
|
|
*FakeContext
|
|
*httptest.Server
|
|
}
|
|
|
|
func (s *localFileStorage) URL() string {
|
|
return s.Server.URL
|
|
}
|
|
|
|
func (s *localFileStorage) CtxDir() string {
|
|
return s.FakeContext.Dir
|
|
}
|
|
|
|
func (s *localFileStorage) Close() error {
|
|
defer s.Server.Close()
|
|
return s.FakeContext.Close()
|
|
}
|
|
|
|
func newLocalFakeStorage(ctx *FakeContext) (*localFileStorage, error) {
|
|
handler := http.FileServer(http.Dir(ctx.Dir))
|
|
server := httptest.NewServer(handler)
|
|
return &localFileStorage{
|
|
FakeContext: ctx,
|
|
Server: server,
|
|
}, nil
|
|
}
|
|
|
|
// remoteFileServer is a containerized static file server started on the remote
|
|
// testing machine to be used in URL-accepting docker build functionality.
|
|
type remoteFileServer struct {
|
|
host string // hostname/port web server is listening to on docker host e.g. 0.0.0.0:43712
|
|
container string
|
|
image string
|
|
ctx *FakeContext
|
|
}
|
|
|
|
func (f *remoteFileServer) URL() string {
|
|
u := url.URL{
|
|
Scheme: "http",
|
|
Host: f.host}
|
|
return u.String()
|
|
}
|
|
|
|
func (f *remoteFileServer) CtxDir() string {
|
|
return f.ctx.Dir
|
|
}
|
|
|
|
func (f *remoteFileServer) Close() error {
|
|
defer func() {
|
|
if f.ctx != nil {
|
|
f.ctx.Close()
|
|
}
|
|
if f.image != "" {
|
|
deleteImages(f.image)
|
|
}
|
|
}()
|
|
if f.container == "" {
|
|
return nil
|
|
}
|
|
return deleteContainer(f.container)
|
|
}
|
|
|
|
func newRemoteFileServer(ctx *FakeContext) (*remoteFileServer, error) {
|
|
var (
|
|
image = fmt.Sprintf("fileserver-img-%s", strings.ToLower(stringutils.GenerateRandomAlphaOnlyString(10)))
|
|
container = fmt.Sprintf("fileserver-cnt-%s", strings.ToLower(stringutils.GenerateRandomAlphaOnlyString(10)))
|
|
)
|
|
|
|
// Build the image
|
|
if err := fakeContextAddDockerfile(ctx, `FROM httpserver
|
|
COPY . /static`); err != nil {
|
|
return nil, fmt.Errorf("Cannot add Dockerfile to context: %v", err)
|
|
}
|
|
if _, err := buildImageFromContext(image, ctx, false); err != nil {
|
|
return nil, fmt.Errorf("failed building file storage container image: %v", err)
|
|
}
|
|
|
|
// Start the container
|
|
runCmd := exec.Command(dockerBinary, "run", "-d", "-P", "--name", container, image)
|
|
if out, ec, err := runCommandWithOutput(runCmd); err != nil {
|
|
return nil, fmt.Errorf("failed to start file storage container. ec=%v\nout=%s\nerr=%v", ec, out, err)
|
|
}
|
|
|
|
// Find out the system assigned port
|
|
out, _, err := runCommandWithOutput(exec.Command(dockerBinary, "port", container, "80/tcp"))
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to find container port: err=%v\nout=%s", err, out)
|
|
}
|
|
|
|
return &remoteFileServer{
|
|
container: container,
|
|
image: image,
|
|
host: strings.Trim(out, "\n"),
|
|
ctx: ctx}, nil
|
|
}
|
|
|
|
func inspectFieldAndMarshall(name, field string, output interface{}) error {
|
|
str, err := inspectFieldJSON(name, field)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return json.Unmarshal([]byte(str), output)
|
|
}
|
|
|
|
func inspectFilter(name, filter string) (string, error) {
|
|
format := fmt.Sprintf("{{%s}}", filter)
|
|
inspectCmd := exec.Command(dockerBinary, "inspect", "-f", format, name)
|
|
out, exitCode, err := runCommandWithOutput(inspectCmd)
|
|
if err != nil || exitCode != 0 {
|
|
return "", fmt.Errorf("failed to inspect container %s: %s", name, out)
|
|
}
|
|
return strings.TrimSpace(out), nil
|
|
}
|
|
|
|
func inspectField(name, field string) (string, error) {
|
|
return inspectFilter(name, fmt.Sprintf(".%s", field))
|
|
}
|
|
|
|
func inspectFieldJSON(name, field string) (string, error) {
|
|
return inspectFilter(name, fmt.Sprintf("json .%s", field))
|
|
}
|
|
|
|
func inspectFieldMap(name, path, field string) (string, error) {
|
|
return inspectFilter(name, fmt.Sprintf("index .%s %q", path, field))
|
|
}
|
|
|
|
func inspectMountSourceField(name, destination string) (string, error) {
|
|
m, err := inspectMountPoint(name, destination)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
return m.Source, nil
|
|
}
|
|
|
|
func inspectMountPoint(name, destination string) (types.MountPoint, error) {
|
|
out, err := inspectFieldJSON(name, "Mounts")
|
|
if err != nil {
|
|
return types.MountPoint{}, err
|
|
}
|
|
|
|
return inspectMountPointJSON(out, destination)
|
|
}
|
|
|
|
var errMountNotFound = errors.New("mount point not found")
|
|
|
|
func inspectMountPointJSON(j, destination string) (types.MountPoint, error) {
|
|
var mp []types.MountPoint
|
|
if err := unmarshalJSON([]byte(j), &mp); err != nil {
|
|
return types.MountPoint{}, err
|
|
}
|
|
|
|
var m *types.MountPoint
|
|
for _, c := range mp {
|
|
if c.Destination == destination {
|
|
m = &c
|
|
break
|
|
}
|
|
}
|
|
|
|
if m == nil {
|
|
return types.MountPoint{}, errMountNotFound
|
|
}
|
|
|
|
return *m, nil
|
|
}
|
|
|
|
func getIDByName(name string) (string, error) {
|
|
return inspectField(name, "Id")
|
|
}
|
|
|
|
// getContainerState returns the exit code of the container
|
|
// and true if it's running
|
|
// the exit code should be ignored if it's running
|
|
func getContainerState(c *check.C, id string) (int, bool, error) {
|
|
var (
|
|
exitStatus int
|
|
running bool
|
|
)
|
|
out, exitCode := dockerCmd(c, "inspect", "--format={{.State.Running}} {{.State.ExitCode}}", id)
|
|
if exitCode != 0 {
|
|
return 0, false, fmt.Errorf("%q doesn't exist: %s", id, out)
|
|
}
|
|
|
|
out = strings.Trim(out, "\n")
|
|
splitOutput := strings.Split(out, " ")
|
|
if len(splitOutput) != 2 {
|
|
return 0, false, fmt.Errorf("failed to get container state: output is broken")
|
|
}
|
|
if splitOutput[0] == "true" {
|
|
running = true
|
|
}
|
|
if n, err := strconv.Atoi(splitOutput[1]); err == nil {
|
|
exitStatus = n
|
|
} else {
|
|
return 0, false, fmt.Errorf("failed to get container state: couldn't parse integer")
|
|
}
|
|
|
|
return exitStatus, running, nil
|
|
}
|
|
|
|
func buildImageWithOut(name, dockerfile string, useCache bool) (string, string, error) {
|
|
args := []string{"build", "-t", name}
|
|
if !useCache {
|
|
args = append(args, "--no-cache")
|
|
}
|
|
args = append(args, "-")
|
|
buildCmd := exec.Command(dockerBinary, args...)
|
|
buildCmd.Stdin = strings.NewReader(dockerfile)
|
|
out, exitCode, err := runCommandWithOutput(buildCmd)
|
|
if err != nil || exitCode != 0 {
|
|
return "", out, fmt.Errorf("failed to build the image: %s", out)
|
|
}
|
|
id, err := getIDByName(name)
|
|
if err != nil {
|
|
return "", out, err
|
|
}
|
|
return id, out, nil
|
|
}
|
|
|
|
func buildImageWithStdoutStderr(name, dockerfile string, useCache bool) (string, string, string, error) {
|
|
args := []string{"build", "-t", name}
|
|
if !useCache {
|
|
args = append(args, "--no-cache")
|
|
}
|
|
args = append(args, "-")
|
|
buildCmd := exec.Command(dockerBinary, args...)
|
|
buildCmd.Stdin = strings.NewReader(dockerfile)
|
|
stdout, stderr, exitCode, err := runCommandWithStdoutStderr(buildCmd)
|
|
if err != nil || exitCode != 0 {
|
|
return "", stdout, stderr, fmt.Errorf("failed to build the image: %s", stdout)
|
|
}
|
|
id, err := getIDByName(name)
|
|
if err != nil {
|
|
return "", stdout, stderr, err
|
|
}
|
|
return id, stdout, stderr, nil
|
|
}
|
|
|
|
func buildImage(name, dockerfile string, useCache bool) (string, error) {
|
|
id, _, err := buildImageWithOut(name, dockerfile, useCache)
|
|
return id, err
|
|
}
|
|
|
|
func buildImageFromContext(name string, ctx *FakeContext, useCache bool) (string, error) {
|
|
args := []string{"build", "-t", name}
|
|
if !useCache {
|
|
args = append(args, "--no-cache")
|
|
}
|
|
args = append(args, ".")
|
|
buildCmd := exec.Command(dockerBinary, args...)
|
|
buildCmd.Dir = ctx.Dir
|
|
out, exitCode, err := runCommandWithOutput(buildCmd)
|
|
if err != nil || exitCode != 0 {
|
|
return "", fmt.Errorf("failed to build the image: %s", out)
|
|
}
|
|
return getIDByName(name)
|
|
}
|
|
|
|
func buildImageFromPath(name, path string, useCache bool) (string, error) {
|
|
args := []string{"build", "-t", name}
|
|
if !useCache {
|
|
args = append(args, "--no-cache")
|
|
}
|
|
args = append(args, path)
|
|
buildCmd := exec.Command(dockerBinary, args...)
|
|
out, exitCode, err := runCommandWithOutput(buildCmd)
|
|
if err != nil || exitCode != 0 {
|
|
return "", fmt.Errorf("failed to build the image: %s", out)
|
|
}
|
|
return getIDByName(name)
|
|
}
|
|
|
|
type gitServer interface {
|
|
URL() string
|
|
Close() error
|
|
}
|
|
|
|
type localGitServer struct {
|
|
*httptest.Server
|
|
}
|
|
|
|
func (r *localGitServer) Close() error {
|
|
r.Server.Close()
|
|
return nil
|
|
}
|
|
|
|
func (r *localGitServer) URL() string {
|
|
return r.Server.URL
|
|
}
|
|
|
|
type fakeGit struct {
|
|
root string
|
|
server gitServer
|
|
RepoURL string
|
|
}
|
|
|
|
func (g *fakeGit) Close() {
|
|
g.server.Close()
|
|
os.RemoveAll(g.root)
|
|
}
|
|
|
|
func newFakeGit(name string, files map[string]string, enforceLocalServer bool) (*fakeGit, error) {
|
|
ctx, err := fakeContextWithFiles(files)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer ctx.Close()
|
|
curdir, err := os.Getwd()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer os.Chdir(curdir)
|
|
|
|
if output, err := exec.Command("git", "init", ctx.Dir).CombinedOutput(); err != nil {
|
|
return nil, fmt.Errorf("error trying to init repo: %s (%s)", err, output)
|
|
}
|
|
err = os.Chdir(ctx.Dir)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if output, err := exec.Command("git", "config", "user.name", "Fake User").CombinedOutput(); err != nil {
|
|
return nil, fmt.Errorf("error trying to set 'user.name': %s (%s)", err, output)
|
|
}
|
|
if output, err := exec.Command("git", "config", "user.email", "fake.user@example.com").CombinedOutput(); err != nil {
|
|
return nil, fmt.Errorf("error trying to set 'user.email': %s (%s)", err, output)
|
|
}
|
|
if output, err := exec.Command("git", "add", "*").CombinedOutput(); err != nil {
|
|
return nil, fmt.Errorf("error trying to add files to repo: %s (%s)", err, output)
|
|
}
|
|
if output, err := exec.Command("git", "commit", "-a", "-m", "Initial commit").CombinedOutput(); err != nil {
|
|
return nil, fmt.Errorf("error trying to commit to repo: %s (%s)", err, output)
|
|
}
|
|
|
|
root, err := ioutil.TempDir("", "docker-test-git-repo")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
repoPath := filepath.Join(root, name+".git")
|
|
if output, err := exec.Command("git", "clone", "--bare", ctx.Dir, repoPath).CombinedOutput(); err != nil {
|
|
os.RemoveAll(root)
|
|
return nil, fmt.Errorf("error trying to clone --bare: %s (%s)", err, output)
|
|
}
|
|
err = os.Chdir(repoPath)
|
|
if err != nil {
|
|
os.RemoveAll(root)
|
|
return nil, err
|
|
}
|
|
if output, err := exec.Command("git", "update-server-info").CombinedOutput(); err != nil {
|
|
os.RemoveAll(root)
|
|
return nil, fmt.Errorf("error trying to git update-server-info: %s (%s)", err, output)
|
|
}
|
|
err = os.Chdir(curdir)
|
|
if err != nil {
|
|
os.RemoveAll(root)
|
|
return nil, err
|
|
}
|
|
|
|
var server gitServer
|
|
if !enforceLocalServer {
|
|
// use fakeStorage server, which might be local or remote (at test daemon)
|
|
server, err = fakeStorageWithContext(fakeContextFromDir(root))
|
|
if err != nil {
|
|
return nil, fmt.Errorf("cannot start fake storage: %v", err)
|
|
}
|
|
} else {
|
|
// always start a local http server on CLI test machin
|
|
httpServer := httptest.NewServer(http.FileServer(http.Dir(root)))
|
|
server = &localGitServer{httpServer}
|
|
}
|
|
return &fakeGit{
|
|
root: root,
|
|
server: server,
|
|
RepoURL: fmt.Sprintf("%s/%s.git", server.URL(), name),
|
|
}, nil
|
|
}
|
|
|
|
// Write `content` to the file at path `dst`, creating it if necessary,
|
|
// as well as any missing directories.
|
|
// The file is truncated if it already exists.
|
|
// Call c.Fatal() at the first error.
|
|
func writeFile(dst, content string, c *check.C) {
|
|
// Create subdirectories if necessary
|
|
if err := os.MkdirAll(path.Dir(dst), 0700); err != nil && !os.IsExist(err) {
|
|
c.Fatal(err)
|
|
}
|
|
f, err := os.OpenFile(dst, os.O_CREATE|os.O_RDWR|os.O_TRUNC, 0700)
|
|
if err != nil {
|
|
c.Fatal(err)
|
|
}
|
|
defer f.Close()
|
|
// Write content (truncate if it exists)
|
|
if _, err := io.Copy(f, strings.NewReader(content)); err != nil {
|
|
c.Fatal(err)
|
|
}
|
|
}
|
|
|
|
// Return the contents of file at path `src`.
|
|
// Call c.Fatal() at the first error (including if the file doesn't exist)
|
|
func readFile(src string, c *check.C) (content string) {
|
|
data, err := ioutil.ReadFile(src)
|
|
if err != nil {
|
|
c.Fatal(err)
|
|
}
|
|
|
|
return string(data)
|
|
}
|
|
|
|
func containerStorageFile(containerID, basename string) string {
|
|
return filepath.Join("/var/lib/docker/containers", containerID, basename)
|
|
}
|
|
|
|
// docker commands that use this function must be run with the '-d' switch.
|
|
func runCommandAndReadContainerFile(filename string, cmd *exec.Cmd) ([]byte, error) {
|
|
out, _, err := runCommandWithOutput(cmd)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("%v: %q", err, out)
|
|
}
|
|
|
|
time.Sleep(1 * time.Second)
|
|
|
|
contID := strings.TrimSpace(out)
|
|
|
|
return readContainerFile(contID, filename)
|
|
}
|
|
|
|
func readContainerFile(containerID, filename string) ([]byte, error) {
|
|
f, err := os.Open(containerStorageFile(containerID, filename))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer f.Close()
|
|
|
|
content, err := ioutil.ReadAll(f)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return content, nil
|
|
}
|
|
|
|
func readContainerFileWithExec(containerID, filename string) ([]byte, error) {
|
|
out, _, err := runCommandWithOutput(exec.Command(dockerBinary, "exec", containerID, "cat", filename))
|
|
return []byte(out), err
|
|
}
|
|
|
|
// daemonTime provides the current time on the daemon host
|
|
func daemonTime(c *check.C) time.Time {
|
|
if isLocalDaemon {
|
|
return time.Now()
|
|
}
|
|
|
|
status, body, err := sockRequest("GET", "/info", nil)
|
|
c.Assert(status, check.Equals, http.StatusOK)
|
|
c.Assert(err, check.IsNil)
|
|
|
|
type infoJSON struct {
|
|
SystemTime string
|
|
}
|
|
var info infoJSON
|
|
if err = json.Unmarshal(body, &info); err != nil {
|
|
c.Fatalf("unable to unmarshal /info response: %v", err)
|
|
}
|
|
|
|
dt, err := time.Parse(time.RFC3339Nano, info.SystemTime)
|
|
if err != nil {
|
|
c.Fatal(err)
|
|
}
|
|
return dt
|
|
}
|
|
|
|
func setupRegistry(c *check.C) *testRegistryV2 {
|
|
testRequires(c, RegistryHosting)
|
|
reg, err := newTestRegistryV2(c)
|
|
if err != nil {
|
|
c.Fatal(err)
|
|
}
|
|
|
|
// Wait for registry to be ready to serve requests.
|
|
for i := 0; i != 5; i++ {
|
|
if err = reg.Ping(); err == nil {
|
|
break
|
|
}
|
|
time.Sleep(100 * time.Millisecond)
|
|
}
|
|
|
|
if err != nil {
|
|
c.Fatal("Timeout waiting for test registry to become available")
|
|
}
|
|
return reg
|
|
}
|
|
|
|
// appendBaseEnv appends the minimum set of environment variables to exec the
|
|
// docker cli binary for testing with correct configuration to the given env
|
|
// list.
|
|
func appendBaseEnv(env []string) []string {
|
|
preserveList := []string{
|
|
// preserve remote test host
|
|
"DOCKER_HOST",
|
|
|
|
// windows: requires preserving SystemRoot, otherwise dial tcp fails
|
|
// with "GetAddrInfoW: A non-recoverable error occurred during a database lookup."
|
|
"SystemRoot",
|
|
}
|
|
|
|
for _, key := range preserveList {
|
|
if val := os.Getenv(key); val != "" {
|
|
env = append(env, fmt.Sprintf("%s=%s", key, val))
|
|
}
|
|
}
|
|
return env
|
|
}
|