Support network in functions

Signed-off-by: Eddie Zaneski <eddiezane@gmail.com>

cmd/config/internal/commands/run-fns.go

@@ -40,6 +40,10 @@ func GetRunFnRunner(name string) *RunFnRunner {
 	r.Command.Flags().StringVar(
 		&r.Image, "image", "",
 		"run this image as a function instead of discovering them.")
+	r.Command.Flags().BoolVar(
+		&r.Network, "network", false, "enable network access for functions that declare it")
+	r.Command.Flags().StringVar(
+		&r.NetworkName, "network-name", "bridge", "the docker network to run the container in")
 	return r
 }
 
@@ -56,6 +60,8 @@ type RunFnRunner struct {
 	FnPaths            []string
 	Image              string
 	RunFns             runfn.RunFns
+	Network            bool
+	NetworkName        string
 }
 
 func (r *RunFnRunner) runE(c *cobra.Command, args []string) error {
@@ -188,6 +194,8 @@ func (r *RunFnRunner) preRunE(c *cobra.Command, args []string) error {
 		Output:        output,
 		Input:         input,
 		Path:          path,
+		Network:       r.Network,
+		NetworkName:   r.NetworkName,
 	}
 
 	// don't consider args for the function

cmd/config/internal/commands/run_test.go

@@ -25,6 +25,8 @@ func TestRunFnCommand_preRunE(t *testing.T) {
 		input         io.Reader
 		output        io.Writer
 		functionPaths []string
+		network       bool
+		networkName   string
 	}{
 		{
 			name: "config map",
@@ -86,6 +88,40 @@ metadata:
 data: {}
 kind: ConfigMap
 apiVersion: v1
+`,
+		},
+		{
+			name:        "network enabled",
+			args:        []string{"run", "dir", "--image", "foo:bar", "--network"},
+			path:        "dir",
+			network:     true,
+			networkName: "bridge",
+			expected: `
+metadata:
+  name: function-input
+  annotations:
+    config.kubernetes.io/function: |
+      container: {image: 'foo:bar'}
+data: {}
+kind: ConfigMap
+apiVersion: v1
+`,
+		},
+		{
+			name:        "with network name",
+			args:        []string{"run", "dir", "--image", "foo:bar", "--network", "--network-name", "foo"},
+			path:        "dir",
+			network:     true,
+			networkName: "foo",
+			expected: `
+metadata:
+  name: function-input
+  annotations:
+    config.kubernetes.io/function: |
+      container: {image: 'foo:bar'}
+data: {}
+kind: ConfigMap
+apiVersion: v1
 `,
 		},
 		{
@@ -206,6 +242,20 @@ apiVersion: v1
 				t.FailNow()
 			}
 
+			// check if Network was set
+			if tt.network {
+				if !assert.Equal(t, tt.network, r.RunFns.Network) {
+					t.FailNow()
+				}
+				if !assert.Equal(t, tt.networkName, r.RunFns.NetworkName) {
+					t.FailNow()
+				}
+			} else {
+				if !assert.Equal(t, false, r.RunFns.Network) {
+					t.FailNow()
+				}
+			}
+
 			// check if FunctionPaths were set
 			if tt.functionPaths == nil {
 				// make Equal work against flag default