feature: Added commandline flags to set env var on the runtime and builder containers (#2369)

pkg/fission-cli/util/util.go

@@ -372,6 +372,21 @@ func UpdateMapFromStringSlice(dataMap *map[string]string, params []string) bool
 	return updated
 }
 
+// GetEnvVarFromStringSlice parses key, val from "key=val" string array and updates passed []v1.EnvVar
+func GetEnvVarFromStringSlice(params []string) []v1.EnvVar {
+	envVarList := []v1.EnvVar{}
+	for _, m := range params {
+		keyValue := strings.SplitN(m, "=", 2)
+		if len(keyValue) == 2 && keyValue[1] != "" {
+			envVarList = append(envVarList, v1.EnvVar{
+				Name:  keyValue[0],
+				Value: keyValue[1],
+			})
+		}
+	}
+	return envVarList
+}
+
 func UrlForFunction(name, namespace string) string {
 	prefix := "/fission-function"
 	if namespace != metav1.NamespaceDefault {

pkg/fission-cli/util/util_test.go

@@ -0,0 +1,66 @@
+/*
+Copyright 2022 The Fission Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package util
+
+import (
+	"reflect"
+	"testing"
+
+	v1 "k8s.io/api/core/v1"
+)
+
+func TestGetEnvVarFromStringSlice(t *testing.T) {
+
+	tests := []struct {
+		name string
+		args []string
+		want []v1.EnvVar
+	}{
+		{
+			name: "params-with-key-value",
+			args: []string{"serverless=fission", "container=docker"},
+			want: []v1.EnvVar{
+				{
+					Name:  "serverless",
+					Value: "fission",
+				},
+				{
+					Name:  "container",
+					Value: "docker",
+				},
+			},
+		},
+		{
+			name: "params-with-nil-value",
+			args: []string{"serverless=", "container="},
+			want: []v1.EnvVar{},
+		},
+		{
+			name: "params-with-only-key",
+			args: []string{"serverless", "container"},
+			want: []v1.EnvVar{},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := GetEnvVarFromStringSlice(tt.args); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("GetEnvVarFromStringSlice() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}