/
client.go
106 lines (94 loc) · 2.89 KB
/
client.go
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package client
import (
"fmt"
"net/http"
"net/url"
"strings"
"github.com/gostor/gotgt/pkg/api/client/transport"
)
type Client struct {
// proto holds the client protocol i.e. unix.
proto string
// addr holds the client address.
addr string
// basePath holds the path to prepend to the requests.
basePath string
// transport is the interface to send request with, it implements transport.Client.
transport transport.Client
// version of the server to talk to.
version string
// custom http headers configured by users.
customHTTPHeaders map[string]string
}
// NewClient initializes a new API client for the given host and API version.
// It uses the given http client as transport.
// It also initializes the custom http headers to add to each request.
//
// It won't send any version information if the version number is empty. It is
// highly recommended that you set a version or your client may break if the
// server is upgraded.
func NewClient(host string, version string, client *http.Client, httpHeaders map[string]string) (*Client, error) {
proto, addr, basePath, err := ParseHost(host)
if err != nil {
return nil, err
}
transport, err := transport.NewTransportWithHTTP(proto, addr, client)
if err != nil {
return nil, err
}
return &Client{
proto: proto,
addr: addr,
basePath: basePath,
transport: transport,
version: version,
customHTTPHeaders: httpHeaders,
}, nil
}
// getAPIPath returns the versioned request path to call the api.
// It appends the query parameters to the path if they are not empty.
func (cli *Client) getAPIPath(p string, query url.Values) string {
var apiPath string
if cli.version != "" {
v := strings.TrimPrefix(cli.version, "v")
apiPath = fmt.Sprintf("%s/v%s%s", cli.basePath, v, p)
} else {
apiPath = fmt.Sprintf("%s%s", cli.basePath, p)
}
u := &url.URL{
Path: apiPath,
}
if len(query) > 0 {
u.RawQuery = query.Encode()
}
return u.String()
}
// ClientVersion returns the version string associated with this
// instance of the Client. Note that this value can be changed
// via the DOCKER_API_VERSION env var.
func (cli *Client) ClientVersion() string {
return cli.version
}
// UpdateClientVersion updates the version string associated with this
// instance of the Client.
func (cli *Client) UpdateClientVersion(v string) {
cli.version = v
}
// ParseHost verifies that the given host strings is valid.
func ParseHost(host string) (string, string, string, error) {
protoAddrParts := strings.SplitN(host, "://", 2)
if len(protoAddrParts) == 1 {
return "", "", "", fmt.Errorf("unable to parse docker host `%s`", host)
}
var basePath string
proto, addr := protoAddrParts[0], protoAddrParts[1]
if proto == "tcp" {
parsed, err := url.Parse("tcp://" + addr)
if err != nil {
return "", "", "", err
}
addr = parsed.Host
basePath = parsed.Path
}
return proto, addr, basePath, nil
}