зеркало из https://github.com/microsoft/docker.git
split client in 2 files
Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)
This commit is contained in:
Victor Vieux
Родитель
a7365a6237
Коммит
ae9ed84fda
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@ -0,0 +1,102 @@
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package client
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import (
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"crypto/tls"
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"encoding/json"
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"fmt"
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"io"
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"os"
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"reflect"
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"strings"
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"text/template"
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flag "github.com/dotcloud/docker/pkg/mflag"
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"github.com/dotcloud/docker/pkg/term"
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"github.com/dotcloud/docker/registry"
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)
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var funcMap = template.FuncMap{
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"json": func(v interface{}) string {
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a, _ := json.Marshal(v)
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return string(a)
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},
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}
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func (cli *DockerCli) getMethod(name string) (func(...string) error, bool) {
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methodName := "Cmd" + strings.ToUpper(name[:1]) + strings.ToLower(name[1:])
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method := reflect.ValueOf(cli).MethodByName(methodName)
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if !method.IsValid() {
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return nil, false
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}
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return method.Interface().(func(...string) error), true
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}
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func (cli *DockerCli) ParseCommands(args ...string) error {
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if len(args) > 0 {
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method, exists := cli.getMethod(args[0])
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if !exists {
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fmt.Println("Error: Command not found:", args[0])
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return cli.CmdHelp(args[1:]...)
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}
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return method(args[1:]...)
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}
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return cli.CmdHelp(args...)
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}
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func (cli *DockerCli) Subcmd(name, signature, description string) *flag.FlagSet {
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flags := flag.NewFlagSet(name, flag.ContinueOnError)
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flags.Usage = func() {
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fmt.Fprintf(cli.err, "\nUsage: docker %s %s\n\n%s\n\n", name, signature, description)
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flags.PrintDefaults()
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os.Exit(2)
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}
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return flags
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}
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func (cli *DockerCli) LoadConfigFile() (err error) {
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cli.configFile, err = registry.LoadConfig(os.Getenv("HOME"))
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if err != nil {
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fmt.Fprintf(cli.err, "WARNING: %s\n", err)
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}
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return err
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}
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func NewDockerCli(in io.ReadCloser, out, err io.Writer, proto, addr string, tlsConfig *tls.Config) *DockerCli {
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var (
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isTerminal = false
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terminalFd uintptr
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)
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if in != nil {
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if file, ok := in.(*os.File); ok {
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terminalFd = file.Fd()
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isTerminal = term.IsTerminal(terminalFd)
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}
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}
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if err == nil {
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err = out
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}
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return &DockerCli{
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proto: proto,
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addr: addr,
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in: in,
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out: out,
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err: err,
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isTerminal: isTerminal,
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terminalFd: terminalFd,
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tlsConfig: tlsConfig,
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}
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}
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type DockerCli struct {
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proto string
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addr string
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configFile *registry.ConfigFile
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in io.ReadCloser
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out io.Writer
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err io.Writer
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isTerminal bool
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terminalFd uintptr
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tlsConfig *tls.Config
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}
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@ -3,34 +3,16 @@ package client
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import (
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"bufio"
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"bytes"
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"crypto/tls"
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"encoding/base64"
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"encoding/json"
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"errors"
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"fmt"
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"github.com/dotcloud/docker/api"
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"github.com/dotcloud/docker/archive"
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"github.com/dotcloud/docker/dockerversion"
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"github.com/dotcloud/docker/engine"
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"github.com/dotcloud/docker/nat"
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flag "github.com/dotcloud/docker/pkg/mflag"
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"github.com/dotcloud/docker/pkg/signal"
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"github.com/dotcloud/docker/pkg/term"
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"github.com/dotcloud/docker/registry"
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"github.com/dotcloud/docker/runconfig"
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"github.com/dotcloud/docker/utils"
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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/httputil"
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"net/url"
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"os"
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"os/exec"
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gosignal "os/signal"
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"path"
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"reflect"
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"regexp"
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goruntime "runtime"
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"strconv"
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"strings"
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@ -38,40 +20,19 @@ import (
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"text/tabwriter"
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"text/template"
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"time"
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"github.com/dotcloud/docker/api"
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"github.com/dotcloud/docker/archive"
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"github.com/dotcloud/docker/dockerversion"
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"github.com/dotcloud/docker/engine"
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"github.com/dotcloud/docker/nat"
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"github.com/dotcloud/docker/pkg/signal"
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"github.com/dotcloud/docker/pkg/term"
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"github.com/dotcloud/docker/registry"
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"github.com/dotcloud/docker/runconfig"
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"github.com/dotcloud/docker/utils"
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)
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var funcMap = template.FuncMap{
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"json": func(v interface{}) string {
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a, _ := json.Marshal(v)
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return string(a)
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},
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}
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var (
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ErrConnectionRefused = errors.New("Cannot connect to the Docker daemon. Is 'docker -d' running on this host?")
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)
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func (cli *DockerCli) getMethod(name string) (func(...string) error, bool) {
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methodName := "Cmd" + strings.ToUpper(name[:1]) + strings.ToLower(name[1:])
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method := reflect.ValueOf(cli).MethodByName(methodName)
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if !method.IsValid() {
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return nil, false
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}
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return method.Interface().(func(...string) error), true
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}
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func (cli *DockerCli) ParseCommands(args ...string) error {
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if len(args) > 0 {
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method, exists := cli.getMethod(args[0])
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if !exists {
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fmt.Println("Error: Command not found:", args[0])
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return cli.CmdHelp(args[1:]...)
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}
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return method(args[1:]...)
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}
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return cli.CmdHelp(args...)
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}
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func (cli *DockerCli) CmdHelp(args ...string) error {
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if len(args) > 0 {
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method, exists := cli.getMethod(args[0])
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@ -2135,417 +2096,3 @@ func (cli *DockerCli) CmdLoad(args ...string) error {
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}
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return nil
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}
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func (cli *DockerCli) dial() (net.Conn, error) {
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if cli.tlsConfig != nil && cli.proto != "unix" {
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return tls.Dial(cli.proto, cli.addr, cli.tlsConfig)
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}
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return net.Dial(cli.proto, cli.addr)
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}
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func (cli *DockerCli) call(method, path string, data interface{}, passAuthInfo bool) (io.ReadCloser, int, error) {
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params := bytes.NewBuffer(nil)
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if data != nil {
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if env, ok := data.(engine.Env); ok {
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if err := env.Encode(params); err != nil {
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return nil, -1, err
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}
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} else {
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buf, err := json.Marshal(data)
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if err != nil {
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return nil, -1, err
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}
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if _, err := params.Write(buf); err != nil {
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return nil, -1, err
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}
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}
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}
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// fixme: refactor client to support redirect
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re := regexp.MustCompile("/+")
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path = re.ReplaceAllString(path, "/")
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req, err := http.NewRequest(method, fmt.Sprintf("/v%s%s", api.APIVERSION, path), params)
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if err != nil {
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return nil, -1, err
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}
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if passAuthInfo {
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cli.LoadConfigFile()
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// Resolve the Auth config relevant for this server
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authConfig := cli.configFile.ResolveAuthConfig(registry.IndexServerAddress())
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getHeaders := func(authConfig registry.AuthConfig) (map[string][]string, error) {
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buf, err := json.Marshal(authConfig)
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if err != nil {
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return nil, err
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}
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registryAuthHeader := []string{
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base64.URLEncoding.EncodeToString(buf),
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}
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return map[string][]string{"X-Registry-Auth": registryAuthHeader}, nil
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}
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if headers, err := getHeaders(authConfig); err == nil && headers != nil {
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for k, v := range headers {
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req.Header[k] = v
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}
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}
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}
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req.Header.Set("User-Agent", "Docker-Client/"+dockerversion.VERSION)
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req.Host = cli.addr
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if data != nil {
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req.Header.Set("Content-Type", "application/json")
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} else if method == "POST" {
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req.Header.Set("Content-Type", "plain/text")
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}
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dial, err := cli.dial()
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if err != nil {
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if strings.Contains(err.Error(), "connection refused") {
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return nil, -1, ErrConnectionRefused
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}
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return nil, -1, err
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}
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clientconn := httputil.NewClientConn(dial, nil)
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resp, err := clientconn.Do(req)
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if err != nil {
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clientconn.Close()
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if strings.Contains(err.Error(), "connection refused") {
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return nil, -1, ErrConnectionRefused
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}
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return nil, -1, err
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}
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if resp.StatusCode < 200 || resp.StatusCode >= 400 {
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body, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return nil, -1, err
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}
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if len(body) == 0 {
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return nil, resp.StatusCode, fmt.Errorf("Error: request returned %s for API route and version %s, check if the server supports the requested API version", http.StatusText(resp.StatusCode), req.URL)
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}
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return nil, resp.StatusCode, fmt.Errorf("Error: %s", bytes.TrimSpace(body))
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}
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wrapper := utils.NewReadCloserWrapper(resp.Body, func() error {
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if resp != nil && resp.Body != nil {
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resp.Body.Close()
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}
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return clientconn.Close()
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})
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return wrapper, resp.StatusCode, nil
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}
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func (cli *DockerCli) stream(method, path string, in io.Reader, out io.Writer, headers map[string][]string) error {
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if (method == "POST" || method == "PUT") && in == nil {
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in = bytes.NewReader([]byte{})
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}
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// fixme: refactor client to support redirect
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re := regexp.MustCompile("/+")
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path = re.ReplaceAllString(path, "/")
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req, err := http.NewRequest(method, fmt.Sprintf("/v%s%s", api.APIVERSION, path), in)
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if err != nil {
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return err
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}
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req.Header.Set("User-Agent", "Docker-Client/"+dockerversion.VERSION)
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req.Host = cli.addr
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if method == "POST" {
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req.Header.Set("Content-Type", "plain/text")
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}
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if headers != nil {
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for k, v := range headers {
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req.Header[k] = v
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}
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}
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dial, err := cli.dial()
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if err != nil {
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if strings.Contains(err.Error(), "connection refused") {
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return fmt.Errorf("Cannot connect to the Docker daemon. Is 'docker -d' running on this host?")
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}
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return err
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}
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clientconn := httputil.NewClientConn(dial, nil)
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resp, err := clientconn.Do(req)
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defer clientconn.Close()
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if err != nil {
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if strings.Contains(err.Error(), "connection refused") {
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return fmt.Errorf("Cannot connect to the Docker daemon. Is 'docker -d' running on this host?")
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}
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return err
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}
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defer resp.Body.Close()
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if resp.StatusCode < 200 || resp.StatusCode >= 400 {
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body, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return err
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}
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if len(body) == 0 {
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return fmt.Errorf("Error :%s", http.StatusText(resp.StatusCode))
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}
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return fmt.Errorf("Error: %s", bytes.TrimSpace(body))
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}
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if api.MatchesContentType(resp.Header.Get("Content-Type"), "application/json") {
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return utils.DisplayJSONMessagesStream(resp.Body, out, cli.terminalFd, cli.isTerminal)
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}
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if _, err := io.Copy(out, resp.Body); 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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func (cli *DockerCli) hijack(method, path string, setRawTerminal bool, in io.ReadCloser, stdout, stderr io.Writer, started chan io.Closer) error {
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defer func() {
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if started != nil {
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close(started)
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}
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}()
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// fixme: refactor client to support redirect
|
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re := regexp.MustCompile("/+")
|
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path = re.ReplaceAllString(path, "/")
|
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|
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req, err := http.NewRequest(method, fmt.Sprintf("/v%s%s", api.APIVERSION, path), nil)
|
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if err != nil {
|
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return err
|
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}
|
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req.Header.Set("User-Agent", "Docker-Client/"+dockerversion.VERSION)
|
||||
req.Header.Set("Content-Type", "plain/text")
|
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req.Host = cli.addr
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|
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dial, err := cli.dial()
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if err != nil {
|
||||
if strings.Contains(err.Error(), "connection refused") {
|
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return fmt.Errorf("Cannot connect to the Docker daemon. Is 'docker -d' running on this host?")
|
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}
|
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return err
|
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}
|
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clientconn := httputil.NewClientConn(dial, nil)
|
||||
defer clientconn.Close()
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|
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// Server hijacks the connection, error 'connection closed' expected
|
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clientconn.Do(req)
|
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|
||||
rwc, br := clientconn.Hijack()
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defer rwc.Close()
|
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|
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if started != nil {
|
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started <- rwc
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}
|
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|
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var receiveStdout chan error
|
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|
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var oldState *term.State
|
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|
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if in != nil && setRawTerminal && cli.isTerminal && os.Getenv("NORAW") == "" {
|
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oldState, err = term.SetRawTerminal(cli.terminalFd)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer term.RestoreTerminal(cli.terminalFd, oldState)
|
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}
|
||||
|
||||
if stdout != nil || stderr != nil {
|
||||
receiveStdout = utils.Go(func() (err error) {
|
||||
defer func() {
|
||||
if in != nil {
|
||||
if setRawTerminal && cli.isTerminal {
|
||||
term.RestoreTerminal(cli.terminalFd, oldState)
|
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}
|
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// For some reason this Close call blocks on darwin..
|
||||
// As the client exists right after, simply discard the close
|
||||
// until we find a better solution.
|
||||
if goruntime.GOOS != "darwin" {
|
||||
in.Close()
|
||||
}
|
||||
}
|
||||
}()
|
||||
|
||||
// When TTY is ON, use regular copy
|
||||
if setRawTerminal {
|
||||
_, err = io.Copy(stdout, br)
|
||||
} else {
|
||||
_, err = utils.StdCopy(stdout, stderr, br)
|
||||
}
|
||||
utils.Debugf("[hijack] End of stdout")
|
||||
return err
|
||||
})
|
||||
}
|
||||
|
||||
sendStdin := utils.Go(func() error {
|
||||
if in != nil {
|
||||
io.Copy(rwc, in)
|
||||
utils.Debugf("[hijack] End of stdin")
|
||||
}
|
||||
if tcpc, ok := rwc.(*net.TCPConn); ok {
|
||||
if err := tcpc.CloseWrite(); err != nil {
|
||||
utils.Debugf("Couldn't send EOF: %s\n", err)
|
||||
}
|
||||
} else if unixc, ok := rwc.(*net.UnixConn); ok {
|
||||
if err := unixc.CloseWrite(); err != nil {
|
||||
utils.Debugf("Couldn't send EOF: %s\n", err)
|
||||
}
|
||||
}
|
||||
// Discard errors due to pipe interruption
|
||||
return nil
|
||||
})
|
||||
|
||||
if stdout != nil || stderr != nil {
|
||||
if err := <-receiveStdout; err != nil {
|
||||
utils.Debugf("Error receiveStdout: %s", err)
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
if !cli.isTerminal {
|
||||
if err := <-sendStdin; err != nil {
|
||||
utils.Debugf("Error sendStdin: %s", err)
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
|
||||
}
|
||||
|
||||
func (cli *DockerCli) getTtySize() (int, int) {
|
||||
if !cli.isTerminal {
|
||||
return 0, 0
|
||||
}
|
||||
ws, err := term.GetWinsize(cli.terminalFd)
|
||||
if err != nil {
|
||||
utils.Debugf("Error getting size: %s", err)
|
||||
if ws == nil {
|
||||
return 0, 0
|
||||
}
|
||||
}
|
||||
return int(ws.Height), int(ws.Width)
|
||||
}
|
||||
|
||||
func (cli *DockerCli) resizeTty(id string) {
|
||||
height, width := cli.getTtySize()
|
||||
if height == 0 && width == 0 {
|
||||
return
|
||||
}
|
||||
v := url.Values{}
|
||||
v.Set("h", strconv.Itoa(height))
|
||||
v.Set("w", strconv.Itoa(width))
|
||||
if _, _, err := readBody(cli.call("POST", "/containers/"+id+"/resize?"+v.Encode(), nil, false)); err != nil {
|
||||
utils.Debugf("Error resize: %s", err)
|
||||
}
|
||||
}
|
||||
|
||||
func (cli *DockerCli) monitorTtySize(id string) error {
|
||||
cli.resizeTty(id)
|
||||
|
||||
sigchan := make(chan os.Signal, 1)
|
||||
gosignal.Notify(sigchan, syscall.SIGWINCH)
|
||||
go func() {
|
||||
for _ = range sigchan {
|
||||
cli.resizeTty(id)
|
||||
}
|
||||
}()
|
||||
return nil
|
||||
}
|
||||
|
||||
func (cli *DockerCli) Subcmd(name, signature, description string) *flag.FlagSet {
|
||||
flags := flag.NewFlagSet(name, flag.ContinueOnError)
|
||||
flags.Usage = func() {
|
||||
fmt.Fprintf(cli.err, "\nUsage: docker %s %s\n\n%s\n\n", name, signature, description)
|
||||
flags.PrintDefaults()
|
||||
os.Exit(2)
|
||||
}
|
||||
return flags
|
||||
}
|
||||
|
||||
func (cli *DockerCli) LoadConfigFile() (err error) {
|
||||
cli.configFile, err = registry.LoadConfig(os.Getenv("HOME"))
|
||||
if err != nil {
|
||||
fmt.Fprintf(cli.err, "WARNING: %s\n", err)
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
||||
func waitForExit(cli *DockerCli, containerId string) (int, error) {
|
||||
stream, _, err := cli.call("POST", "/containers/"+containerId+"/wait", nil, false)
|
||||
if err != nil {
|
||||
return -1, err
|
||||
}
|
||||
|
||||
var out engine.Env
|
||||
if err := out.Decode(stream); err != nil {
|
||||
return -1, err
|
||||
}
|
||||
return out.GetInt("StatusCode"), nil
|
||||
}
|
||||
|
||||
// getExitCode perform an inspect on the container. It returns
|
||||
// the running state and the exit code.
|
||||
func getExitCode(cli *DockerCli, containerId string) (bool, int, error) {
|
||||
body, _, err := readBody(cli.call("GET", "/containers/"+containerId+"/json", nil, false))
|
||||
if err != nil {
|
||||
// If we can't connect, then the daemon probably died.
|
||||
if err != ErrConnectionRefused {
|
||||
return false, -1, err
|
||||
}
|
||||
return false, -1, nil
|
||||
}
|
||||
c := &api.Container{}
|
||||
if err := json.Unmarshal(body, c); err != nil {
|
||||
return false, -1, err
|
||||
}
|
||||
return c.State.Running, c.State.ExitCode, nil
|
||||
}
|
||||
|
||||
func readBody(stream io.ReadCloser, statusCode int, err error) ([]byte, int, error) {
|
||||
if stream != nil {
|
||||
defer stream.Close()
|
||||
}
|
||||
if err != nil {
|
||||
return nil, statusCode, err
|
||||
}
|
||||
body, err := ioutil.ReadAll(stream)
|
||||
if err != nil {
|
||||
return nil, -1, err
|
||||
}
|
||||
return body, statusCode, nil
|
||||
}
|
||||
|
||||
func NewDockerCli(in io.ReadCloser, out, err io.Writer, proto, addr string, tlsConfig *tls.Config) *DockerCli {
|
||||
var (
|
||||
isTerminal = false
|
||||
terminalFd uintptr
|
||||
)
|
||||
|
||||
if in != nil {
|
||||
if file, ok := in.(*os.File); ok {
|
||||
terminalFd = file.Fd()
|
||||
isTerminal = term.IsTerminal(terminalFd)
|
||||
}
|
||||
}
|
||||
|
||||
if err == nil {
|
||||
err = out
|
||||
}
|
||||
return &DockerCli{
|
||||
proto: proto,
|
||||
addr: addr,
|
||||
in: in,
|
||||
out: out,
|
||||
err: err,
|
||||
isTerminal: isTerminal,
|
||||
terminalFd: terminalFd,
|
||||
tlsConfig: tlsConfig,
|
||||
}
|
||||
}
|
||||
|
||||
type DockerCli struct {
|
||||
proto string
|
||||
addr string
|
||||
configFile *registry.ConfigFile
|
||||
in io.ReadCloser
|
||||
out io.Writer
|
||||
err io.Writer
|
||||
isTerminal bool
|
||||
terminalFd uintptr
|
||||
tlsConfig *tls.Config
|
||||
}
|
||||
|
|
@ -0,0 +1,390 @@
|
|||
package client
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto/tls"
|
||||
"encoding/base64"
|
||||
"encoding/json"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"net"
|
||||
"net/http"
|
||||
"net/http/httputil"
|
||||
"net/url"
|
||||
"os"
|
||||
gosignal "os/signal"
|
||||
"regexp"
|
||||
goruntime "runtime"
|
||||
"strconv"
|
||||
"strings"
|
||||
"syscall"
|
||||
|
||||
"github.com/dotcloud/docker/api"
|
||||
"github.com/dotcloud/docker/dockerversion"
|
||||
"github.com/dotcloud/docker/engine"
|
||||
"github.com/dotcloud/docker/pkg/term"
|
||||
"github.com/dotcloud/docker/registry"
|
||||
"github.com/dotcloud/docker/utils"
|
||||
)
|
||||
|
||||
var (
|
||||
ErrConnectionRefused = errors.New("Cannot connect to the Docker daemon. Is 'docker -d' running on this host?")
|
||||
)
|
||||
|
||||
func (cli *DockerCli) dial() (net.Conn, error) {
|
||||
if cli.tlsConfig != nil && cli.proto != "unix" {
|
||||
return tls.Dial(cli.proto, cli.addr, cli.tlsConfig)
|
||||
}
|
||||
return net.Dial(cli.proto, cli.addr)
|
||||
}
|
||||
|
||||
func (cli *DockerCli) call(method, path string, data interface{}, passAuthInfo bool) (io.ReadCloser, int, error) {
|
||||
params := bytes.NewBuffer(nil)
|
||||
if data != nil {
|
||||
if env, ok := data.(engine.Env); ok {
|
||||
if err := env.Encode(params); err != nil {
|
||||
return nil, -1, err
|
||||
}
|
||||
} else {
|
||||
buf, err := json.Marshal(data)
|
||||
if err != nil {
|
||||
return nil, -1, err
|
||||
}
|
||||
if _, err := params.Write(buf); err != nil {
|
||||
return nil, -1, err
|
||||
}
|
||||
}
|
||||
}
|
||||
// fixme: refactor client to support redirect
|
||||
re := regexp.MustCompile("/+")
|
||||
path = re.ReplaceAllString(path, "/")
|
||||
|
||||
req, err := http.NewRequest(method, fmt.Sprintf("/v%s%s", api.APIVERSION, path), params)
|
||||
if err != nil {
|
||||
return nil, -1, err
|
||||
}
|
||||
if passAuthInfo {
|
||||
cli.LoadConfigFile()
|
||||
// Resolve the Auth config relevant for this server
|
||||
authConfig := cli.configFile.ResolveAuthConfig(registry.IndexServerAddress())
|
||||
getHeaders := func(authConfig registry.AuthConfig) (map[string][]string, error) {
|
||||
buf, err := json.Marshal(authConfig)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
registryAuthHeader := []string{
|
||||
base64.URLEncoding.EncodeToString(buf),
|
||||
}
|
||||
return map[string][]string{"X-Registry-Auth": registryAuthHeader}, nil
|
||||
}
|
||||
if headers, err := getHeaders(authConfig); err == nil && headers != nil {
|
||||
for k, v := range headers {
|
||||
req.Header[k] = v
|
||||
}
|
||||
}
|
||||
}
|
||||
req.Header.Set("User-Agent", "Docker-Client/"+dockerversion.VERSION)
|
||||
req.Host = cli.addr
|
||||
if data != nil {
|
||||
req.Header.Set("Content-Type", "application/json")
|
||||
} else if method == "POST" {
|
||||
req.Header.Set("Content-Type", "plain/text")
|
||||
}
|
||||
dial, err := cli.dial()
|
||||
if err != nil {
|
||||
if strings.Contains(err.Error(), "connection refused") {
|
||||
return nil, -1, ErrConnectionRefused
|
||||
}
|
||||
return nil, -1, err
|
||||
}
|
||||
clientconn := httputil.NewClientConn(dial, nil)
|
||||
resp, err := clientconn.Do(req)
|
||||
if err != nil {
|
||||
clientconn.Close()
|
||||
if strings.Contains(err.Error(), "connection refused") {
|
||||
return nil, -1, ErrConnectionRefused
|
||||
}
|
||||
return nil, -1, err
|
||||
}
|
||||
|
||||
if resp.StatusCode < 200 || resp.StatusCode >= 400 {
|
||||
body, err := ioutil.ReadAll(resp.Body)
|
||||
if err != nil {
|
||||
return nil, -1, err
|
||||
}
|
||||
if len(body) == 0 {
|
||||
return nil, resp.StatusCode, fmt.Errorf("Error: request returned %s for API route and version %s, check if the server supports the requested API version", http.StatusText(resp.StatusCode), req.URL)
|
||||
}
|
||||
return nil, resp.StatusCode, fmt.Errorf("Error: %s", bytes.TrimSpace(body))
|
||||
}
|
||||
|
||||
wrapper := utils.NewReadCloserWrapper(resp.Body, func() error {
|
||||
if resp != nil && resp.Body != nil {
|
||||
resp.Body.Close()
|
||||
}
|
||||
return clientconn.Close()
|
||||
})
|
||||
return wrapper, resp.StatusCode, nil
|
||||
}
|
||||
|
||||
func (cli *DockerCli) stream(method, path string, in io.Reader, out io.Writer, headers map[string][]string) error {
|
||||
if (method == "POST" || method == "PUT") && in == nil {
|
||||
in = bytes.NewReader([]byte{})
|
||||
}
|
||||
|
||||
// fixme: refactor client to support redirect
|
||||
re := regexp.MustCompile("/+")
|
||||
path = re.ReplaceAllString(path, "/")
|
||||
|
||||
req, err := http.NewRequest(method, fmt.Sprintf("/v%s%s", api.APIVERSION, path), in)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
req.Header.Set("User-Agent", "Docker-Client/"+dockerversion.VERSION)
|
||||
req.Host = cli.addr
|
||||
if method == "POST" {
|
||||
req.Header.Set("Content-Type", "plain/text")
|
||||
}
|
||||
|
||||
if headers != nil {
|
||||
for k, v := range headers {
|
||||
req.Header[k] = v
|
||||
}
|
||||
}
|
||||
|
||||
dial, err := cli.dial()
|
||||
if err != nil {
|
||||
if strings.Contains(err.Error(), "connection refused") {
|
||||
return fmt.Errorf("Cannot connect to the Docker daemon. Is 'docker -d' running on this host?")
|
||||
}
|
||||
return err
|
||||
}
|
||||
clientconn := httputil.NewClientConn(dial, nil)
|
||||
resp, err := clientconn.Do(req)
|
||||
defer clientconn.Close()
|
||||
if err != nil {
|
||||
if strings.Contains(err.Error(), "connection refused") {
|
||||
return fmt.Errorf("Cannot connect to the Docker daemon. Is 'docker -d' running on this host?")
|
||||
}
|
||||
return err
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
|
||||
if resp.StatusCode < 200 || resp.StatusCode >= 400 {
|
||||
body, err := ioutil.ReadAll(resp.Body)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if len(body) == 0 {
|
||||
return fmt.Errorf("Error :%s", http.StatusText(resp.StatusCode))
|
||||
}
|
||||
return fmt.Errorf("Error: %s", bytes.TrimSpace(body))
|
||||
}
|
||||
|
||||
if api.MatchesContentType(resp.Header.Get("Content-Type"), "application/json") {
|
||||
return utils.DisplayJSONMessagesStream(resp.Body, out, cli.terminalFd, cli.isTerminal)
|
||||
}
|
||||
if _, err := io.Copy(out, resp.Body); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (cli *DockerCli) hijack(method, path string, setRawTerminal bool, in io.ReadCloser, stdout, stderr io.Writer, started chan io.Closer) error {
|
||||
defer func() {
|
||||
if started != nil {
|
||||
close(started)
|
||||
}
|
||||
}()
|
||||
// fixme: refactor client to support redirect
|
||||
re := regexp.MustCompile("/+")
|
||||
path = re.ReplaceAllString(path, "/")
|
||||
|
||||
req, err := http.NewRequest(method, fmt.Sprintf("/v%s%s", api.APIVERSION, path), nil)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
req.Header.Set("User-Agent", "Docker-Client/"+dockerversion.VERSION)
|
||||
req.Header.Set("Content-Type", "plain/text")
|
||||
req.Host = cli.addr
|
||||
|
||||
dial, err := cli.dial()
|
||||
if err != nil {
|
||||
if strings.Contains(err.Error(), "connection refused") {
|
||||
return fmt.Errorf("Cannot connect to the Docker daemon. Is 'docker -d' running on this host?")
|
||||
}
|
||||
return err
|
||||
}
|
||||
clientconn := httputil.NewClientConn(dial, nil)
|
||||
defer clientconn.Close()
|
||||
|
||||
// Server hijacks the connection, error 'connection closed' expected
|
||||
clientconn.Do(req)
|
||||
|
||||
rwc, br := clientconn.Hijack()
|
||||
defer rwc.Close()
|
||||
|
||||
if started != nil {
|
||||
started <- rwc
|
||||
}
|
||||
|
||||
var receiveStdout chan error
|
||||
|
||||
var oldState *term.State
|
||||
|
||||
if in != nil && setRawTerminal && cli.isTerminal && os.Getenv("NORAW") == "" {
|
||||
oldState, err = term.SetRawTerminal(cli.terminalFd)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer term.RestoreTerminal(cli.terminalFd, oldState)
|
||||
}
|
||||
|
||||
if stdout != nil || stderr != nil {
|
||||
receiveStdout = utils.Go(func() (err error) {
|
||||
defer func() {
|
||||
if in != nil {
|
||||
if setRawTerminal && cli.isTerminal {
|
||||
term.RestoreTerminal(cli.terminalFd, oldState)
|
||||
}
|
||||
// For some reason this Close call blocks on darwin..
|
||||
// As the client exists right after, simply discard the close
|
||||
// until we find a better solution.
|
||||
if goruntime.GOOS != "darwin" {
|
||||
in.Close()
|
||||
}
|
||||
}
|
||||
}()
|
||||
|
||||
// When TTY is ON, use regular copy
|
||||
if setRawTerminal {
|
||||
_, err = io.Copy(stdout, br)
|
||||
} else {
|
||||
_, err = utils.StdCopy(stdout, stderr, br)
|
||||
}
|
||||
utils.Debugf("[hijack] End of stdout")
|
||||
return err
|
||||
})
|
||||
}
|
||||
|
||||
sendStdin := utils.Go(func() error {
|
||||
if in != nil {
|
||||
io.Copy(rwc, in)
|
||||
utils.Debugf("[hijack] End of stdin")
|
||||
}
|
||||
if tcpc, ok := rwc.(*net.TCPConn); ok {
|
||||
if err := tcpc.CloseWrite(); err != nil {
|
||||
utils.Errorf("Couldn't send EOF: %s\n", err)
|
||||
}
|
||||
} else if unixc, ok := rwc.(*net.UnixConn); ok {
|
||||
if err := unixc.CloseWrite(); err != nil {
|
||||
utils.Errorf("Couldn't send EOF: %s\n", err)
|
||||
}
|
||||
}
|
||||
// Discard errors due to pipe interruption
|
||||
return nil
|
||||
})
|
||||
|
||||
if stdout != nil || stderr != nil {
|
||||
if err := <-receiveStdout; err != nil {
|
||||
utils.Errorf("Error receiveStdout: %s", err)
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
if !cli.isTerminal {
|
||||
if err := <-sendStdin; err != nil {
|
||||
utils.Errorf("Error sendStdin: %s", err)
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
|
||||
}
|
||||
|
||||
func (cli *DockerCli) resizeTty(id string) {
|
||||
height, width := cli.getTtySize()
|
||||
if height == 0 && width == 0 {
|
||||
return
|
||||
}
|
||||
v := url.Values{}
|
||||
v.Set("h", strconv.Itoa(height))
|
||||
v.Set("w", strconv.Itoa(width))
|
||||
if _, _, err := readBody(cli.call("POST", "/containers/"+id+"/resize?"+v.Encode(), nil, false)); err != nil {
|
||||
utils.Errorf("Error resize: %s", err)
|
||||
}
|
||||
}
|
||||
|
||||
func waitForExit(cli *DockerCli, containerId string) (int, error) {
|
||||
stream, _, err := cli.call("POST", "/containers/"+containerId+"/wait", nil, false)
|
||||
if err != nil {
|
||||
return -1, err
|
||||
}
|
||||
|
||||
var out engine.Env
|
||||
if err := out.Decode(stream); err != nil {
|
||||
return -1, err
|
||||
}
|
||||
return out.GetInt("StatusCode"), nil
|
||||
}
|
||||
|
||||
// getExitCode perform an inspect on the container. It returns
|
||||
// the running state and the exit code.
|
||||
func getExitCode(cli *DockerCli, containerId string) (bool, int, error) {
|
||||
body, _, err := readBody(cli.call("GET", "/containers/"+containerId+"/json", nil, false))
|
||||
if err != nil {
|
||||
// If we can't connect, then the daemon probably died.
|
||||
if err != ErrConnectionRefused {
|
||||
return false, -1, err
|
||||
}
|
||||
return false, -1, nil
|
||||
}
|
||||
c := &api.Container{}
|
||||
if err := json.Unmarshal(body, c); err != nil {
|
||||
return false, -1, err
|
||||
}
|
||||
return c.State.Running, c.State.ExitCode, nil
|
||||
}
|
||||
|
||||
func (cli *DockerCli) monitorTtySize(id string) error {
|
||||
cli.resizeTty(id)
|
||||
|
||||
sigchan := make(chan os.Signal, 1)
|
||||
gosignal.Notify(sigchan, syscall.SIGWINCH)
|
||||
go func() {
|
||||
for _ = range sigchan {
|
||||
cli.resizeTty(id)
|
||||
}
|
||||
}()
|
||||
return nil
|
||||
}
|
||||
|
||||
func (cli *DockerCli) getTtySize() (int, int) {
|
||||
if !cli.isTerminal {
|
||||
return 0, 0
|
||||
}
|
||||
ws, err := term.GetWinsize(cli.terminalFd)
|
||||
if err != nil {
|
||||
utils.Errorf("Error getting size: %s", err)
|
||||
if ws == nil {
|
||||
return 0, 0
|
||||
}
|
||||
}
|
||||
return int(ws.Height), int(ws.Width)
|
||||
}
|
||||
|
||||
func readBody(stream io.ReadCloser, statusCode int, err error) ([]byte, int, error) {
|
||||
if stream != nil {
|
||||
defer stream.Close()
|
||||
}
|
||||
if err != nil {
|
||||
return nil, statusCode, err
|
||||
}
|
||||
body, err := ioutil.ReadAll(stream)
|
||||
if err != nil {
|
||||
return nil, -1, err
|
||||
}
|
||||
return body, statusCode, nil
|
||||
}
|
||||
Загрузка…
Ссылка в новой задаче