1 files changed, 77 insertions, 0 deletions
diff --git a/go/internal/gitlabnet/client.go b/go/internal/gitlabnet/client.go
new file mode 100644
index 0000000..abc218f
--- /dev/null
+++ b/go/internal/gitlabnet/client.go
@@ -0,0 +1,77 @@
+package gitlabnet
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strings"
+
+	"gitlab.com/gitlab-org/gitlab-shell/go/internal/config"
+)
+
+const (
+	internalApiPath  = "/api/v4/internal"
+	secretHeaderName = "Gitlab-Shared-Secret"
+)
+
+type GitlabClient interface {
+	Get(path string) (*http.Response, error)
+	// TODO: implement posts
+	// Post(path string) (http.Response, error)
+}
+
+type ErrorResponse struct {
+	Message string `json:"message"`
+}
+
+func GetClient(config *config.Config) (GitlabClient, error) {
+	url := config.GitlabUrl
+	if strings.HasPrefix(url, UnixSocketProtocol) {
+		return buildSocketClient(config), nil
+	}
+
+	return nil, fmt.Errorf("Unsupported protocol")
+}
+
+func normalizePath(path string) string {
+	if !strings.HasPrefix(path, "/") {
+		path = "/" + path
+	}
+
+	if !strings.HasPrefix(path, internalApiPath) {
+		path = internalApiPath + path
+	}
+	return path
+}
+
+func parseError(resp *http.Response) error {
+	if resp.StatusCode >= 200 && resp.StatusCode <= 299 {
+		return nil
+	}
+	defer resp.Body.Close()
+	parsedResponse := &ErrorResponse{}
+
+	if err := json.NewDecoder(resp.Body).Decode(parsedResponse); err != nil {
+		return fmt.Errorf("Internal API error (%v)", resp.StatusCode)
+	} else {
+		return fmt.Errorf(parsedResponse.Message)
+	}
+
+}
+
+func doRequest(client *http.Client, config *config.Config, request *http.Request) (*http.Response, error) {
+	encodedSecret := base64.StdEncoding.EncodeToString([]byte(config.Secret))
+	request.Header.Set(secretHeaderName, encodedSecret)
+
+	response, err := client.Do(request)
+	if err != nil {
+		return nil, fmt.Errorf("Internal API unreachable")
+	}
+
+	if err := parseError(response); err != nil {
+		return nil, err
+	}
+
+	return response, nil
+}