Addition of ScaleIO Kubernetes Volume Plugin

This commits implements the Kubernetes volume plugin allowing pods to seamlessly access and use data stored on ScaleIO volumes.

vendor/github.com/codedellemc/goscaleio/system.go

@@ -0,0 +1,106 @@
+package goscaleio
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+
+	types "github.com/codedellemc/goscaleio/types/v1"
+)
+
+type System struct {
+	System *types.System
+	client *Client
+}
+
+func NewSystem(client *Client) *System {
+	return &System{
+		System: new(types.System),
+		client: client,
+	}
+}
+
+func (client *Client) FindSystem(instanceID, name, href string) (*System, error) {
+	systems, err := client.GetInstance(href)
+	if err != nil {
+		return &System{}, fmt.Errorf("err: problem getting instances: %s", err)
+	}
+
+	for _, system := range systems {
+		if system.ID == instanceID || system.Name == name || href != "" {
+			outSystem := NewSystem(client)
+			outSystem.System = system
+			return outSystem, nil
+		}
+	}
+	return &System{}, fmt.Errorf("err: systemid or systemname not found")
+}
+
+func (system *System) GetStatistics() (statistics *types.Statistics, err error) {
+	endpoint := system.client.SIOEndpoint
+	// endpoint.Path = fmt.Sprintf("/api/instances/System::%v/relationships/Statistics", system.System.ID)
+
+	link, err := GetLink(system.System.Links, "/api/System/relationship/Statistics")
+	if err != nil {
+		return &types.Statistics{}, errors.New("Error: problem finding link")
+	}
+
+	endpoint.Path = link.HREF
+
+	req := system.client.NewRequest(map[string]string{}, "GET", endpoint, nil)
+	req.SetBasicAuth("", system.client.Token)
+	req.Header.Add("Accept", "application/json;version="+system.client.configConnect.Version)
+
+	resp, err := system.client.retryCheckResp(&system.client.Http, req)
+	if err != nil {
+		return &types.Statistics{}, fmt.Errorf("problem getting response: %v", err)
+	}
+	defer resp.Body.Close()
+
+	if err = system.client.decodeBody(resp, &statistics); err != nil {
+		return &types.Statistics{}, fmt.Errorf("error decoding instances response: %s", err)
+	}
+
+	// bs, err := ioutil.ReadAll(resp.Body)
+	// if err != nil {
+	// 	return errors.New("error reading body")
+	// }
+	//
+	// fmt.Println(string(bs))
+	return statistics, nil
+}
+
+func (system *System) CreateSnapshotConsistencyGroup(snapshotVolumesParam *types.SnapshotVolumesParam) (snapshotVolumesResp *types.SnapshotVolumesResp, err error) {
+	endpoint := system.client.SIOEndpoint
+
+	link, err := GetLink(system.System.Links, "self")
+	if err != nil {
+		return &types.SnapshotVolumesResp{}, errors.New("Error: problem finding link")
+	}
+
+	endpoint.Path = fmt.Sprintf("%v/action/snapshotVolumes", link.HREF)
+
+	jsonOutput, err := json.Marshal(&snapshotVolumesParam)
+	if err != nil {
+		return &types.SnapshotVolumesResp{}, fmt.Errorf("error marshaling: %s", err)
+	}
+
+	req := system.client.NewRequest(map[string]string{}, "POST", endpoint, bytes.NewBufferString(string(jsonOutput)))
+	req.SetBasicAuth("", system.client.Token)
+	req.Header.Add("Accept", "application/json;version="+system.client.configConnect.Version)
+	req.Header.Add("Content-Type", "application/json;version="+system.client.configConnect.Version)
+
+	resp, err := system.client.retryCheckResp(&system.client.Http, req)
+	if err != nil {
+		return &types.SnapshotVolumesResp{}, fmt.Errorf("problem getting response: %v", err)
+	}
+	defer resp.Body.Close()
+
+	if err = system.client.decodeBody(resp, &snapshotVolumesResp); err != nil {
+		return &types.SnapshotVolumesResp{}, fmt.Errorf("error decoding snapshotvolumes response: %s", err)
+	}
+
+	return snapshotVolumesResp, nil
+
+}