[WIP] Start very early implementation

pkg/csi/p5x.go

@@ -0,0 +1,97 @@
+package csi
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+	"io"
+	"k8s.io/klog"
+	"net/http"
+)
+
+type p5xApi struct {
+	endpoint string
+	port     int64
+	token    string
+}
+
+type p5xVolume struct {
+	VolumeId    int64  `json:"volumeId"`
+	Name        string `json:"name"`
+	SizeInBytes int64  `json:"sizeInBytes"`
+}
+
+func (p5x *p5xApi) CreateVolume(name string, sizeInBytes int64) (*p5xVolume, error) {
+	vol := &p5xVolume{
+		VolumeId:    0,
+		Name:        name,
+		SizeInBytes: sizeInBytes,
+	}
+
+	body, err := json.Marshal(vol)
+	if err != nil {
+		return nil, err
+	}
+
+	resBody, err := p5x.MakeRequest(http.MethodPost, "volumes", body)
+	if err != nil {
+		return nil, err
+	}
+
+	err = json.Unmarshal(resBody, vol)
+	klog.Info("Successfully created volume: ", vol)
+
+	return vol, nil
+}
+
+func (p5x *p5xApi) GetVolumeByName(name string) (*p5xVolume, error) {
+	return nil, status.Error(codes.Unimplemented, "")
+}
+
+func (p5x *p5xApi) GetVolumeById(volumeId int64) (*p5xVolume, error) {
+	return nil, status.Error(codes.Unimplemented, "")
+}
+
+func (p5x *p5xApi) DeleteVolume(volume *p5xVolume) error {
+	route := fmt.Sprintf("volumes/%s", volume.Name)
+	resBody, err := p5x.MakeRequest(http.MethodDelete, route, []byte(`{}`))
+	if err != nil {
+		return err
+	}
+
+	klog.Infof("Successfully deleted volume %s: %s", volume.Name, resBody)
+	return nil
+}
+
+func (p5x *p5xApi) MakeRequest(method string, route string, body []byte) ([]byte, error) {
+	bodyReader := bytes.NewReader(body)
+
+	url := fmt.Sprintf("%s:%d/api/v1/%s", p5x.endpoint, p5x.port, route)
+	klog.Infof("p5x.MakeRequest: [%s] %s", method, url)
+	klog.Infof("p5x.MakeRequest: %s", body)
+	req, err := http.NewRequest(method, url, bodyReader)
+	if err != nil {
+		klog.Errorf("p5x.MakeRequest: could not create request: %s\n", err)
+		return nil, err
+	}
+
+	req.Header.Set("Accept", "application/json")
+	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", p5x.token))
+	req.Header.Set("Content-Type", "application/json")
+
+	res, err := http.DefaultClient.Do(req)
+	if err != nil {
+		klog.Errorf("p5x.MakeRequest: error executing request: %s\n", err)
+		return nil, err
+	}
+
+	resBody, err := io.ReadAll(res.Body)
+	if err != nil {
+		klog.Errorf("p5x.MakeRequest: could not read response body: %s\n", err)
+		return nil, err
+	}
+	klog.Infof("p5x.MakeRequest: response body: %s\n", resBody)
+	return resBody, nil
+}