Update logutils to support multiple fields

Added support for multiple fields and updated
instancehandler and app/client.go to use the new functions

Issue-ID: MULTICLOUD-577
Change-Id: I7cc04f67e72448aa121d10cfd80d66d544981933
Signed-off-by: Kiran Kamineni <kiran.k.kamineni@intel.com>

3 files changed, 104 insertions, 32 deletions

diff --git a/src/k8splugin/api/instancehandler.go b/src/k8splugin/api/instancehandler.go
index 1dcbcda9..b0437426 100644
--- a/src/k8splugin/api/instancehandler.go
+++ b/src/k8splugin/api/instancehandler.go
@@ -20,10 +20,10 @@ import (
 	"net/http"
 
 	"github.com/onap/multicloud-k8s/src/k8splugin/internal/app"
+	log "github.com/onap/multicloud-k8s/src/k8splugin/internal/logutils"
 
 	"github.com/gorilla/mux"
 	pkgerrors "github.com/pkg/errors"
-	log "github.com/onap/multicloud-k8s/src/k8splugin/internal/logutils"
 )
 
 // Used to store the backend implementation objects
@@ -37,18 +37,25 @@ func (i instanceHandler) validateBody(body interface{}) error {
 	switch b := body.(type) {
 	case app.InstanceRequest:
 		if b.CloudRegion == "" {
-			log.WithFields("CreateVnfRequest bad request", "CloudRegion", "Invalid/Missing CloudRegion in POST request")
+			log.Error("CreateVnfRequest Bad Request", log.Fields{
+				"cloudRegion": "Missing CloudRegion in POST request",
+			})
 			werr := pkgerrors.Wrap(errors.New("Invalid/Missing CloudRegion in POST request"), "CreateVnfRequest bad request")
 			return werr
 		}
 		if b.RBName == "" || b.RBVersion == "" {
-			log.WithFields("CreateVnfRequest bad request", "RBName", "Invalid/Missing resource bundle parameters in POST request")
-			log.WithFields("CreateVnfRequest bad request", "RBVersion", "Invalid/Missing resource bundle parameters in POST request")
+			log.Error("CreateVnfRequest Bad Request", log.Fields{
+				"message":   "One of RBName, RBVersion is missing",
+				"RBName":    b.RBName,
+				"RBVersion": b.RBVersion,
+			})
 			werr := pkgerrors.Wrap(errors.New("Invalid/Missing resource bundle parameters in POST request"), "CreateVnfRequest bad request")
 			return werr
 		}
 		if b.ProfileName == "" {
-			log.WithFields("CreateVnfRequest bad request", "ProfileName", "Invalid/Missing profile name in POST request")
+			log.Error("CreateVnfRequest bad request", log.Fields{
+				"ProfileName": "Missing profile name in POST request",
+			})
 			werr := pkgerrors.Wrap(errors.New("Invalid/Missing profile name in POST request"), "CreateVnfRequest bad request")
 			return werr
 		}
@@ -62,11 +69,15 @@ func (i instanceHandler) createHandler(w http.ResponseWriter, r *http.Request) {
 	err := json.NewDecoder(r.Body).Decode(&resource)
 	switch {
 	case err == io.EOF:
-		log.WithFields("http.StatusBadRequest", "Error", "Body empty")
+		log.Error("Body Empty", log.Fields{
+			"error": io.EOF,
+		})
 		http.Error(w, "Body empty", http.StatusBadRequest)
 		return
 	case err != nil:
-		log.WithFields("http.StatusUnprocessableEntity", "Error", "http.StatusUnprocessableEntity")
+		log.Error("Error unmarshaling Body", log.Fields{
+			"error": err,
+		})
 		http.Error(w, err.Error(), http.StatusUnprocessableEntity)
 		return
 	}
@@ -74,14 +85,19 @@ func (i instanceHandler) createHandler(w http.ResponseWriter, r *http.Request) {
 	// Check body for expected parameters
 	err = i.validateBody(resource)
 	if err != nil {
-		log.WithFields("StatusUnprocessableEntity", "Error", "http.StatusUnprocessableEntity")
+		log.Error("Invalid Parameters in Body", log.Fields{
+			"error": err,
+		})
 		http.Error(w, err.Error(), http.StatusUnprocessableEntity)
 		return
 	}
 
 	resp, err := i.client.Create(resource)
 	if err != nil {
-		log.WithFields("StatusInternalServerError", "Error", "http.StatusInternalServerError")
+		log.Error("Error Creating Resource", log.Fields{
+			"error":    err,
+			"resource": resource,
+		})
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
@@ -90,7 +106,10 @@ func (i instanceHandler) createHandler(w http.ResponseWriter, r *http.Request) {
 	w.WriteHeader(http.StatusCreated)
 	err = json.NewEncoder(w).Encode(resp)
 	if err != nil {
-		log.WithFields("StatusInternalServerError", "Error", "http.StatusInternalServerError")
+		log.Error("Error Marshaling Response", log.Fields{
+			"error":    err,
+			"response": resp,
+		})
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
@@ -103,7 +122,10 @@ func (i instanceHandler) getHandler(w http.ResponseWriter, r *http.Request) {
 
 	resp, err := i.client.Get(id)
 	if err != nil {
-		log.WithFields("StatusInternalServerError", "Error", "http.StatusInternalServerError")
+		log.Error("Error getting Instance", log.Fields{
+			"error": err,
+			"id":    id,
+		})
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
@@ -112,7 +134,10 @@ func (i instanceHandler) getHandler(w http.ResponseWriter, r *http.Request) {
 	w.WriteHeader(http.StatusOK)
 	err = json.NewEncoder(w).Encode(resp)
 	if err != nil {
-		log.WithFields("StatusInternalServerError", "Error", "http.StatusInternalServerError")
+		log.Error("Error Marshaling Response", log.Fields{
+			"error":    err,
+			"response": resp,
+		})
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
@@ -125,7 +150,10 @@ func (i instanceHandler) statusHandler(w http.ResponseWriter, r *http.Request) {
 
 	resp, err := i.client.Status(id)
 	if err != nil {
-		log.WithFields("StatusInternalServerError", "Error", "http.StatusInternalServerError")
+		log.Error("Error getting Status", log.Fields{
+			"error": err,
+			"id":    id,
+		})
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
@@ -134,7 +162,10 @@ func (i instanceHandler) statusHandler(w http.ResponseWriter, r *http.Request) {
 	w.WriteHeader(http.StatusOK)
 	err = json.NewEncoder(w).Encode(resp)
 	if err != nil {
-		log.WithFields("StatusInternalServerError", "Error", "http.StatusInternalServerError")
+		log.Error("Error Marshaling Response", log.Fields{
+			"error":    err,
+			"response": resp,
+		})
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
@@ -147,11 +178,16 @@ func (i instanceHandler) listHandler(w http.ResponseWriter, r *http.Request) {
 	//Which will list all instances
 	rbName := r.FormValue("rb-name")
 	rbVersion := r.FormValue("rb-version")
-	ProfileName := r.FormValue("profile-name")
+	profileName := r.FormValue("profile-name")
 
-	resp, err := i.client.List(rbName, rbVersion, ProfileName)
+	resp, err := i.client.List(rbName, rbVersion, profileName)
 	if err != nil {
-		log.WithFields("StatusInternalServerError", "Error", "http.StatusInternalServerError")
+		log.Error("Error listing instances", log.Fields{
+			"error":        err,
+			"rb-name":      rbName,
+			"rb-version":   rbVersion,
+			"profile-name": profileName,
+		})
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
@@ -160,7 +196,10 @@ func (i instanceHandler) listHandler(w http.ResponseWriter, r *http.Request) {
 	w.WriteHeader(http.StatusOK)
 	err = json.NewEncoder(w).Encode(resp)
 	if err != nil {
-		log.WithFields("StatusInternalServerError", "Error", "http.StatusInternalServerError")
+		log.Error("Error Marshaling Response", log.Fields{
+			"error":    err,
+			"response": resp,
+		})
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
@@ -173,7 +212,9 @@ func (i instanceHandler) deleteHandler(w http.ResponseWriter, r *http.Request) {
 
 	err := i.client.Delete(id)
 	if err != nil {
-		log.WithFields("StatusInternalServerError", "Error", "http.StatusInternalServerError")
+		log.Error("Error Deleting Instance", log.Fields{
+			"error": err,
+		})
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
@@ -181,4 +222,3 @@ func (i instanceHandler) deleteHandler(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Content-Type", "application/json")
 	w.WriteHeader(http.StatusAccepted)
 }
-
diff --git a/src/k8splugin/internal/app/client.go b/src/k8splugin/internal/app/client.go
index b75c7dfd..78477a82 100644
--- a/src/k8splugin/internal/app/client.go
+++ b/src/k8splugin/internal/app/client.go
@@ -14,13 +14,12 @@ limitations under the License.
 package app
 
 import (
-	"log"
 	"os"
 	"time"
 
 	"github.com/onap/multicloud-k8s/src/k8splugin/internal/connection"
 	"github.com/onap/multicloud-k8s/src/k8splugin/internal/helm"
-	logutils "github.com/onap/multicloud-k8s/src/k8splugin/internal/logutils"
+	log "github.com/onap/multicloud-k8s/src/k8splugin/internal/logutils"
 	"github.com/onap/multicloud-k8s/src/k8splugin/internal/plugin"
 
 	pkgerrors "github.com/pkg/errors"
@@ -118,16 +117,24 @@ func (k *KubernetesClient) ensureNamespace(namespace string) error {
 	}, namespace, k)
 
 	if err != nil {
-		logutils.WithFields(err.Error(), "namespace", namespace)
+		log.Error("Error checking for namespace", log.Fields{
+			"error":     err,
+			"namespace": namespace,
+		})
 		return pkgerrors.Wrap(err, "Error checking for namespace: "+namespace)
 	}
 
 	if ns == "" {
-		logutils.WithFields("Creating namespace", "namespace", namespace)
+		log.Info("Creating Namespace", log.Fields{
+			"namespace": namespace,
+		})
 
 		_, err = pluginImpl.Create("", namespace, k)
 		if err != nil {
-			logutils.WithFields(err.Error(), "namespace", namespace)
+			log.Error("Error Creating Namespace", log.Fields{
+				"error":     err,
+				"namespace": namespace,
+			})
 			return pkgerrors.Wrap(err, "Error creating "+namespace+" namespace")
 		}
 	}
@@ -141,7 +148,9 @@ func (k *KubernetesClient) createKind(resTempl helm.KubernetesResourceTemplate,
 		return helm.KubernetesResource{}, pkgerrors.New("File " + resTempl.FilePath + "does not exists")
 	}
 
-	log.Println("Processing file: " + resTempl.FilePath)
+	log.Info("Processing Kubernetes Resource", log.Fields{
+		"filepath": resTempl.FilePath,
+	})
 
 	pluginImpl, err := plugin.GetPluginByKind(resTempl.GVK.Kind)
 	if err != nil {
@@ -150,11 +159,19 @@ func (k *KubernetesClient) createKind(resTempl helm.KubernetesResourceTemplate,
 
 	createdResourceName, err := pluginImpl.Create(resTempl.FilePath, namespace, k)
 	if err != nil {
-		log.Printf("Error: %s while creating: %s", err.Error(), resTempl.GVK.Kind)
+		log.Error("Error Creating Resource", log.Fields{
+			"error":    err,
+			"gvk":      resTempl.GVK,
+			"filepath": resTempl.FilePath,
+		})
 		return helm.KubernetesResource{}, pkgerrors.Wrap(err, "Error in plugin "+resTempl.GVK.Kind+" plugin")
 	}
 
-	log.Print(createdResourceName + " created")
+	log.Info("Created Kubernetes Resource", log.Fields{
+		"resource": createdResourceName,
+		"gvk":      resTempl.GVK,
+	})
+
 	return helm.KubernetesResource{
 		GVK:  resTempl.GVK,
 		Name: createdResourceName,
@@ -182,14 +199,16 @@ func (k *KubernetesClient) createResources(sortedTemplates []helm.KubernetesReso
 }
 
 func (k *KubernetesClient) deleteKind(resource helm.KubernetesResource, namespace string) error {
-	log.Println("Deleting Kind: " + resource.GVK.Kind)
+	log.Warn("Deleting Resource", log.Fields{
+		"gvk":      resource.GVK,
+		"resource": resource.Name,
+	})
 
 	pluginImpl, err := plugin.GetPluginByKind(resource.GVK.Kind)
 	if err != nil {
 		return pkgerrors.Wrap(err, "Error loading plugin")
 	}
 
-	log.Println("Deleting resource: " + resource.Name)
 	err = pluginImpl.Delete(resource, namespace, k)
 	if err != nil {
 		return pkgerrors.Wrap(err, "Error deleting "+resource.Name)
diff --git a/src/k8splugin/internal/logutils/logger.go b/src/k8splugin/internal/logutils/logger.go
index 7df23474..2e8f9969 100644
--- a/src/k8splugin/internal/logutils/logger.go
+++ b/src/k8splugin/internal/logutils/logger.go
@@ -4,12 +4,25 @@ import (
 	log "github.com/sirupsen/logrus"
 )
 
+//Fields is type that will be used by the calling function
+type Fields map[string]interface{}
+
 func init() {
 	// Log as JSON instead of the default ASCII formatter.
 	log.SetFormatter(&log.JSONFormatter{})
 }
 
-func WithFields(msg string, fkey string, fvalue string) {
-	log.WithFields(log.Fields{fkey: fvalue}).Error(msg)
+// Error uses the fields provided and logs
+func Error(msg string, fields Fields) {
+	log.WithFields(log.Fields(fields)).Error(msg)
+}
+
+// Warn uses the fields provided and logs
+func Warn(msg string, fields Fields) {
+	log.WithFields(log.Fields(fields)).Warn(msg)
 }
 
+// Info uses the fields provided and logs
+func Info(msg string, fields Fields) {
+	log.WithFields(log.Fields(fields)).Info(msg)
+}