Merge pull request #86 from ingrammicro/feature/77-allow-work-labels-…

…on-user-mode

Feature/77 allow work labels on user mode

api/labels/labels_api.go

@@ -0,0 +1,110 @@
+package labels
+
+import (
+	"encoding/json"
+	"fmt"
+
+	log "github.com/Sirupsen/logrus"
+	"github.com/ingrammicro/concerto/api/types"
+	"github.com/ingrammicro/concerto/utils"
+)
+
+// LabelService manages polling operations
+type LabelService struct {
+	concertoService utils.ConcertoService
+}
+
+// NewLabelService returns a Concerto labels service
+func NewLabelService(concertoService utils.ConcertoService) (*LabelService, error) {
+	if concertoService == nil {
+		return nil, fmt.Errorf("Must initialize ConcertoService before using it")
+	}
+
+	return &LabelService{
+		concertoService: concertoService,
+	}, nil
+}
+
+// GetLabelList returns the list of labels as an array of Label
+func (lbl *LabelService) GetLabelList() (labels []types.Label, err error) {
+	log.Debug("GetLabelList")
+
+	data, status, err := lbl.concertoService.Get("/v1/labels")
+	if err != nil {
+		return nil, err
+	}
+
+	if err = utils.CheckStandardStatus(status, data); err != nil {
+		return nil, err
+	}
+
+	if err = json.Unmarshal(data, &labels); err != nil {
+		return nil, err
+	}
+
+	// exclude internal labels (with a Namespace defined)
+	var filteredLabels []types.Label
+	for _, label := range labels {
+		if label.Namespace == "" {
+			filteredLabels = append(filteredLabels, label)
+		}
+	}
+
+	return filteredLabels, nil
+}
+
+// CreateLabel creates a label
+func (lbl *LabelService) CreateLabel(labelVector *map[string]interface{}) (label *types.Label, err error) {
+	log.Debug("CreateLabel")
+
+	data, status, err := lbl.concertoService.Post("/v1/labels/", labelVector)
+	if err != nil {
+		return nil, err
+	}
+
+	if err = utils.CheckStandardStatus(status, data); err != nil {
+		return nil, err
+	}
+
+	if err = json.Unmarshal(data, &label); err != nil {
+		return nil, err
+	}
+
+	return label, nil
+}
+
+// AddLabel assigns a single label from a single labelable resource
+func (lbl *LabelService) AddLabel(labelVector *map[string]interface{}, labelID string) (labeledResources []types.LabeledResource, err error) {
+	log.Debug("AddLabel")
+
+	data, status, err := lbl.concertoService.Post(fmt.Sprintf("/v1/labels/%s/resources", labelID), labelVector)
+	if err != nil {
+		return nil, err
+	}
+
+	if err = utils.CheckStandardStatus(status, data); err != nil {
+		return nil, err
+	}
+
+	if err = json.Unmarshal(data, &labeledResources); err != nil {
+		return nil, err
+	}
+
+	return labeledResources, nil
+}
+
+// RemoveLabel de-assigns a single label from a single labelable resource
+func (lbl *LabelService) RemoveLabel(labelID string, resourceType string, resourceID string) error {
+	log.Debug("RemoveLabel")
+
+	data, status, err := lbl.concertoService.Delete(fmt.Sprintf("v1/labels/%s/resources/%s/%s", labelID, resourceType, resourceID))
+	if err != nil {
+		return err
+	}
+
+	if err = utils.CheckStandardStatus(status, data); err != nil {
+		return err
+	}
+
+	return nil
+}