mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
321 lines
9.9 KiB
Go
321 lines
9.9 KiB
Go
package request
|
|
|
|
import (
|
|
"bufio"
|
|
"bytes"
|
|
"crypto/tls"
|
|
"encoding/json"
|
|
"fmt"
|
|
"io"
|
|
"io/ioutil"
|
|
"net"
|
|
"net/http"
|
|
"net/http/httputil"
|
|
"net/url"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/docker/docker/api"
|
|
dclient "github.com/docker/docker/client"
|
|
"github.com/docker/docker/opts"
|
|
"github.com/docker/docker/pkg/ioutils"
|
|
"github.com/docker/go-connections/sockets"
|
|
"github.com/docker/go-connections/tlsconfig"
|
|
"github.com/pkg/errors"
|
|
)
|
|
|
|
// Method creates a modifier that sets the specified string as the request method
|
|
func Method(method string) func(*http.Request) error {
|
|
return func(req *http.Request) error {
|
|
req.Method = method
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// RawString sets the specified string as body for the request
|
|
func RawString(content string) func(*http.Request) error {
|
|
return RawContent(ioutil.NopCloser(strings.NewReader(content)))
|
|
}
|
|
|
|
// RawContent sets the specified reader as body for the request
|
|
func RawContent(reader io.ReadCloser) func(*http.Request) error {
|
|
return func(req *http.Request) error {
|
|
req.Body = reader
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// ContentType sets the specified Content-Type request header
|
|
func ContentType(contentType string) func(*http.Request) error {
|
|
return func(req *http.Request) error {
|
|
req.Header.Set("Content-Type", contentType)
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// JSON sets the Content-Type request header to json
|
|
func JSON(req *http.Request) error {
|
|
return ContentType("application/json")(req)
|
|
}
|
|
|
|
// JSONBody creates a modifier that encodes the specified data to a JSON string and set it as request body. It also sets
|
|
// the Content-Type header of the request.
|
|
func JSONBody(data interface{}) func(*http.Request) error {
|
|
return func(req *http.Request) error {
|
|
jsonData := bytes.NewBuffer(nil)
|
|
if err := json.NewEncoder(jsonData).Encode(data); err != nil {
|
|
return err
|
|
}
|
|
req.Body = ioutil.NopCloser(jsonData)
|
|
req.Header.Set("Content-Type", "application/json")
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// Post creates and execute a POST request on the specified host and endpoint, with the specified request modifiers
|
|
func Post(endpoint string, modifiers ...func(*http.Request) error) (*http.Response, io.ReadCloser, error) {
|
|
return Do(endpoint, append(modifiers, Method(http.MethodPost))...)
|
|
}
|
|
|
|
// Delete creates and execute a DELETE request on the specified host and endpoint, with the specified request modifiers
|
|
func Delete(endpoint string, modifiers ...func(*http.Request) error) (*http.Response, io.ReadCloser, error) {
|
|
return Do(endpoint, append(modifiers, Method(http.MethodDelete))...)
|
|
}
|
|
|
|
// Get creates and execute a GET request on the specified host and endpoint, with the specified request modifiers
|
|
func Get(endpoint string, modifiers ...func(*http.Request) error) (*http.Response, io.ReadCloser, error) {
|
|
return Do(endpoint, modifiers...)
|
|
}
|
|
|
|
// Do creates and execute a request on the specified endpoint, with the specified request modifiers
|
|
func Do(endpoint string, modifiers ...func(*http.Request) error) (*http.Response, io.ReadCloser, error) {
|
|
return DoOnHost(DaemonHost(), endpoint, modifiers...)
|
|
}
|
|
|
|
// DoOnHost creates and execute a request on the specified host and endpoint, with the specified request modifiers
|
|
func DoOnHost(host, endpoint string, modifiers ...func(*http.Request) error) (*http.Response, io.ReadCloser, error) {
|
|
req, err := New(host, endpoint, modifiers...)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
client, err := NewHTTPClient(host)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
resp, err := client.Do(req)
|
|
var body io.ReadCloser
|
|
if resp != nil {
|
|
body = ioutils.NewReadCloserWrapper(resp.Body, func() error {
|
|
defer resp.Body.Close()
|
|
return nil
|
|
})
|
|
}
|
|
return resp, body, err
|
|
}
|
|
|
|
// New creates a new http Request to the specified host and endpoint, with the specified request modifiers
|
|
func New(host, endpoint string, modifiers ...func(*http.Request) error) (*http.Request, error) {
|
|
_, addr, _, err := dclient.ParseHost(host)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if err != nil {
|
|
return nil, errors.Wrapf(err, "could not parse url %q", host)
|
|
}
|
|
req, err := http.NewRequest("GET", endpoint, nil)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("could not create new request: %v", err)
|
|
}
|
|
|
|
req.URL.Scheme = "http"
|
|
req.URL.Host = addr
|
|
|
|
for _, config := range modifiers {
|
|
if err := config(req); err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
return req, nil
|
|
}
|
|
|
|
// NewHTTPClient creates an http client for the specific host
|
|
func NewHTTPClient(host string) (*http.Client, error) {
|
|
// FIXME(vdemeester) 10*time.Second timeout of SockRequest… ?
|
|
proto, addr, _, err := dclient.ParseHost(host)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
transport := new(http.Transport)
|
|
if proto == "tcp" && os.Getenv("DOCKER_TLS_VERIFY") != "" {
|
|
// Setup the socket TLS configuration.
|
|
tlsConfig, err := getTLSConfig()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
transport = &http.Transport{TLSClientConfig: tlsConfig}
|
|
}
|
|
transport.DisableKeepAlives = true
|
|
err = sockets.ConfigureTransport(transport, proto, addr)
|
|
return &http.Client{
|
|
Transport: transport,
|
|
}, err
|
|
}
|
|
|
|
// NewClient returns a new Docker API client
|
|
func NewClient() (dclient.APIClient, error) {
|
|
return NewClientForHost(DaemonHost())
|
|
}
|
|
|
|
// NewClientForHost returns a Docker API client for the host
|
|
func NewClientForHost(host string) (dclient.APIClient, error) {
|
|
httpClient, err := NewHTTPClient(host)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return dclient.NewClient(host, api.DefaultVersion, httpClient, nil)
|
|
}
|
|
|
|
// FIXME(vdemeester) httputil.ClientConn is deprecated, use http.Client instead (closer to actual client)
|
|
// Deprecated: Use New instead of NewRequestClient
|
|
// Deprecated: use request.Do (or Get, Delete, Post) instead
|
|
func newRequestClient(method, endpoint string, data io.Reader, ct, daemon string, modifiers ...func(*http.Request)) (*http.Request, *httputil.ClientConn, error) {
|
|
c, err := SockConn(time.Duration(10*time.Second), daemon)
|
|
if err != nil {
|
|
return nil, nil, fmt.Errorf("could not dial docker daemon: %v", err)
|
|
}
|
|
|
|
client := httputil.NewClientConn(c, nil)
|
|
|
|
req, err := http.NewRequest(method, endpoint, data)
|
|
if err != nil {
|
|
client.Close()
|
|
return nil, nil, fmt.Errorf("could not create new request: %v", err)
|
|
}
|
|
|
|
for _, opt := range modifiers {
|
|
opt(req)
|
|
}
|
|
|
|
if ct != "" {
|
|
req.Header.Set("Content-Type", ct)
|
|
}
|
|
return req, client, nil
|
|
}
|
|
|
|
// SockRequest create a request against the specified host (with method, endpoint and other request modifier) and
|
|
// returns the status code, and the content as an byte slice
|
|
// Deprecated: use request.Do instead
|
|
func SockRequest(method, endpoint string, data interface{}, daemon string, modifiers ...func(*http.Request)) (int, []byte, error) {
|
|
jsonData := bytes.NewBuffer(nil)
|
|
if err := json.NewEncoder(jsonData).Encode(data); err != nil {
|
|
return -1, nil, err
|
|
}
|
|
|
|
res, body, err := SockRequestRaw(method, endpoint, jsonData, "application/json", daemon, modifiers...)
|
|
if err != nil {
|
|
return -1, nil, err
|
|
}
|
|
b, err := ReadBody(body)
|
|
return res.StatusCode, b, err
|
|
}
|
|
|
|
// ReadBody read the specified ReadCloser content and returns it
|
|
func ReadBody(b io.ReadCloser) ([]byte, error) {
|
|
defer b.Close()
|
|
return ioutil.ReadAll(b)
|
|
}
|
|
|
|
// SockRequestRaw create a request against the specified host (with method, endpoint and other request modifier) and
|
|
// returns the http response, the output as a io.ReadCloser
|
|
// Deprecated: use request.Do (or Get, Delete, Post) instead
|
|
func SockRequestRaw(method, endpoint string, data io.Reader, ct, daemon string, modifiers ...func(*http.Request)) (*http.Response, io.ReadCloser, error) {
|
|
req, client, err := newRequestClient(method, endpoint, data, ct, daemon, modifiers...)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
resp, err := client.Do(req)
|
|
if err != nil {
|
|
client.Close()
|
|
return resp, nil, err
|
|
}
|
|
body := ioutils.NewReadCloserWrapper(resp.Body, func() error {
|
|
defer resp.Body.Close()
|
|
return client.Close()
|
|
})
|
|
|
|
return resp, body, err
|
|
}
|
|
|
|
// SockRequestHijack creates a connection to specified host (with method, contenttype, …) and returns a hijacked connection
|
|
// and the output as a `bufio.Reader`
|
|
func SockRequestHijack(method, endpoint string, data io.Reader, ct string, daemon string, modifiers ...func(*http.Request)) (net.Conn, *bufio.Reader, error) {
|
|
req, client, err := newRequestClient(method, endpoint, data, ct, daemon, modifiers...)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
client.Do(req)
|
|
conn, br := client.Hijack()
|
|
return conn, br, nil
|
|
}
|
|
|
|
// SockConn opens a connection on the specified socket
|
|
func SockConn(timeout time.Duration, daemon string) (net.Conn, error) {
|
|
daemonURL, err := url.Parse(daemon)
|
|
if err != nil {
|
|
return nil, errors.Wrapf(err, "could not parse url %q", daemon)
|
|
}
|
|
|
|
var c net.Conn
|
|
switch daemonURL.Scheme {
|
|
case "npipe":
|
|
return npipeDial(daemonURL.Path, timeout)
|
|
case "unix":
|
|
return net.DialTimeout(daemonURL.Scheme, daemonURL.Path, timeout)
|
|
case "tcp":
|
|
if os.Getenv("DOCKER_TLS_VERIFY") != "" {
|
|
// Setup the socket TLS configuration.
|
|
tlsConfig, err := getTLSConfig()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
dialer := &net.Dialer{Timeout: timeout}
|
|
return tls.DialWithDialer(dialer, daemonURL.Scheme, daemonURL.Host, tlsConfig)
|
|
}
|
|
return net.DialTimeout(daemonURL.Scheme, daemonURL.Host, timeout)
|
|
default:
|
|
return c, errors.Errorf("unknown scheme %v (%s)", daemonURL.Scheme, daemon)
|
|
}
|
|
}
|
|
|
|
func getTLSConfig() (*tls.Config, error) {
|
|
dockerCertPath := os.Getenv("DOCKER_CERT_PATH")
|
|
|
|
if dockerCertPath == "" {
|
|
return nil, errors.New("DOCKER_TLS_VERIFY specified, but no DOCKER_CERT_PATH environment variable")
|
|
}
|
|
|
|
option := &tlsconfig.Options{
|
|
CAFile: filepath.Join(dockerCertPath, "ca.pem"),
|
|
CertFile: filepath.Join(dockerCertPath, "cert.pem"),
|
|
KeyFile: filepath.Join(dockerCertPath, "key.pem"),
|
|
}
|
|
tlsConfig, err := tlsconfig.Client(*option)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return tlsConfig, nil
|
|
}
|
|
|
|
// DaemonHost return the daemon host string for this test execution
|
|
func DaemonHost() string {
|
|
daemonURLStr := "unix://" + opts.DefaultUnixSocket
|
|
if daemonHostVar := os.Getenv("DOCKER_HOST"); daemonHostVar != "" {
|
|
daemonURLStr = daemonHostVar
|
|
}
|
|
return daemonURLStr
|
|
}
|