feat: `invoke` - allow insecure connections over SSL (#1255)

Signed-off-by: Zbynek Roubalik <zroubalik@gmail.com>

Signed-off-by: Zbynek Roubalik <zroubalik@gmail.com>

cmd/client.go

@@ -28,6 +28,9 @@ type ClientConfig struct {
 	// Verbose logging.  By default logging output is kept to the bare minimum.
 	// Use this flag to configure verbose logging throughout.
 	Verbose bool
+
+	// Allow insecure server connections when using SSL
+	InsecureSkipVerify bool
 }
 
 // ClientFactory defines a constructor which assists in the creation of a Client
@@ -62,9 +65,9 @@ func NewClientFactory(n func() *fn.Client) ClientFactory {
 //	defer done()
 func NewClient(cfg ClientConfig, options ...fn.Option) (*fn.Client, func()) {
 	var (
-		p  = progress.New(cfg.Verbose) // updates the CLI
+		p  = progress.New(cfg.Verbose)            // updates the CLI
-		t  = newTransport()            // may provide a custom impl which proxies
+		t  = newTransport(cfg.InsecureSkipVerify) // may provide a custom impl which proxies
-		c  = newCredentialsProvider(t) // for accessing registries
+		c  = newCredentialsProvider(t)            // for accessing registries
 		d  = newKnativeDeployer(cfg.Namespace, cfg.Verbose)
 		pp = newTektonPipelinesProvider(cfg.Namespace, p, c, cfg.Verbose)
 		o  = []fn.Option{ // standard (shared) options for all commands
@@ -103,14 +106,14 @@ func NewClient(cfg ClientConfig, options ...fn.Option) (*fn.Client, func()) {
 
 // newTransport returns a transport with cluster-flavor-specific variations
 // which take advantage of additional features offered by cluster variants.
-func newTransport() fnhttp.RoundTripCloser {
+func newTransport(insecureSkipVerify bool) fnhttp.RoundTripCloser {
 	if openshift.IsOpenShift() {
-		return fnhttp.NewRoundTripper(openshift.WithOpenShiftServiceCA())
+		return fnhttp.NewRoundTripper(fnhttp.WithInsecureSkipVerify(insecureSkipVerify), openshift.WithOpenShiftServiceCA())
 	}
 
 	// Other cluster variants ...
 
-	return fnhttp.NewRoundTripper() // Default (vanilla k8s)
+	return fnhttp.NewRoundTripper(fnhttp.WithInsecureSkipVerify(insecureSkipVerify)) // Default (vanilla k8s)
 }
 
 // newCredentialsProvider returns a credentials provider which possibly

cmd/invoke.go

@@ -26,7 +26,7 @@ NAME
 SYNOPSIS
 	{{.Name}} invoke [-t|--target] [-f|--format]
 	             [--id] [--source] [--type] [--data] [--file] [--content-type]
-	             [-s|--save] [-p|--path] [-c|--confirm] [-v|--verbose]
+	             [-s|--save] [-p|--path] [-i|--insecure] [-c|--confirm] [-v|--verbose]
 
 DESCRIPTION
 	Invokes the function by sending a test request to the currently running
@@ -97,9 +97,12 @@ EXAMPLES
 	o Invoke an arbitrary endpoint (CloudEvent)
 		$ {{.Name}} invoke -f=cloudevent -t="https://my-event-broker.example.com"
 
+	o Allow insecure server connections when using SSL
+		$ {{.Name}} invoke --insecure
+
 `,
 		SuggestFor: []string{"emit", "emti", "send", "emit", "exec", "nivoke", "onvoke", "unvoke", "knvoke", "imvoke", "ihvoke", "ibvoke"},
-		PreRunE:    bindEnv("path", "format", "target", "id", "source", "type", "data", "content-type", "file", "confirm"),
+		PreRunE:    bindEnv("path", "format", "target", "id", "source", "type", "data", "content-type", "file", "insecure", "confirm"),
 	}
 
 	// Flags
@@ -112,6 +115,7 @@ EXAMPLES
 	cmd.Flags().StringP("content-type", "", fn.DefaultInvokeContentType, "Content Type of the data. (Env: $FUNC_CONTENT_TYPE)")
 	cmd.Flags().StringP("data", "", fn.DefaultInvokeData, "Data to send in the request. (Env: $FUNC_DATA)")
 	cmd.Flags().StringP("file", "", "", "Path to a file to use as data. Overrides --data flag and should be sent with a correct --content-type. (Env: $FUNC_FILE)")
+	cmd.Flags().BoolP("insecure", "i", false, "Allow insecure server connections when using SSL. (Env: $FUNC_INSECURE)")
 	cmd.Flags().BoolP("confirm", "c", false, "Prompt to confirm all options interactively. (Env: $FUNC_CONFIRM)")
 
 	cmd.SetHelpFunc(defaultTemplatedHelp)
@@ -132,7 +136,7 @@ func runInvoke(cmd *cobra.Command, args []string, newClient ClientFactory) (err
 	}
 
 	// Client instance from env vars, flags, args and user prompts (if --confirm)
-	client, done := newClient(ClientConfig{Namespace: cfg.Namespace, Verbose: cfg.Verbose})
+	client, done := newClient(ClientConfig{Namespace: cfg.Namespace, Verbose: cfg.Verbose, InsecureSkipVerify: cfg.Insecure})
 	defer done()
 
 	// Message to send the running function built from parameters gathered
@@ -201,6 +205,7 @@ type invokeConfig struct {
 	Namespace   string
 	Confirm     bool
 	Verbose     bool
+	Insecure    bool
 }
 
 func newInvokeConfig(newClient ClientFactory) (cfg invokeConfig, err error) {
@@ -217,6 +222,7 @@ func newInvokeConfig(newClient ClientFactory) (cfg invokeConfig, err error) {
 		Confirm:     viper.GetBool("confirm"),
 		Verbose:     viper.GetBool("verbose"),
 		Namespace:   viper.GetString("namespace"),
+		Insecure:    viper.GetBool("insecure"),
 	}
 
 	// If file was passed, read it in as data
@@ -234,7 +240,7 @@ func newInvokeConfig(newClient ClientFactory) (cfg invokeConfig, err error) {
 	}
 
 	// Client instance for use during prompting.
-	client, done := newClient(ClientConfig{Namespace: cfg.Namespace, Verbose: cfg.Verbose})
+	client, done := newClient(ClientConfig{Namespace: cfg.Namespace, Verbose: cfg.Verbose, InsecureSkipVerify: cfg.Insecure})
 	defer done()
 
 	// If in interactive terminal mode, prompt to modify defaults.
@@ -252,6 +258,7 @@ func newInvokeConfig(newClient ClientFactory) (cfg invokeConfig, err error) {
 	fmt.Printf("Data: %v\n", cfg.Data)
 	fmt.Printf("Content Type: %v\n", cfg.ContentType)
 	fmt.Printf("File: %v\n", cfg.File)
+	fmt.Printf("Insecure: %v\n", cfg.Insecure)
 	return
 }
 
@@ -375,5 +382,17 @@ func (c invokeConfig) prompt(client *fn.Client) (invokeConfig, error) {
 		return c, err
 	}
 
+	qs = []*survey.Question{
+		{
+			Name: "Insecure",
+			Prompt: &survey.Confirm{
+				Message: "Allow insecure server connections when using SSL",
+				Default: c.Insecure,
+			},
+		}}
+	if err := survey.Ask(qs, &c); err != nil {
+		return c, err
+	}
+
 	return c, nil
 }

docs/reference/func_invoke.md

@@ -11,7 +11,7 @@ NAME
 SYNOPSIS
 	func invoke [-t|--target] [-f|--format]
 	             [--id] [--source] [--type] [--data] [--file] [--content-type]
-	             [-s|--save] [-p|--path] [-c|--confirm] [-v|--verbose]
+	             [-s|--save] [-p|--path] [-i|--insecure] [-c|--confirm] [-v|--verbose]
 
 DESCRIPTION
 	Invokes the function by sending a test request to the currently running
@@ -82,6 +82,9 @@ EXAMPLES
 	o Invoke an arbitrary endpoint (CloudEvent)
 		$ func invoke -f=cloudevent -t="https://my-event-broker.example.com"
 
+	o Allow insecure server connections when using SSL
+		$ func invoke --insecure
+
 
 
 ```
@@ -98,6 +101,7 @@ func invoke
   -f, --format string         Format of message to send, 'http' or 'cloudevent'.  Default is to choose automatically. (Env: $FUNC_FORMAT)
   -h, --help                  help for invoke
       --id string             ID for the request data. (Env: $FUNC_ID)
+  -i, --insecure              Allow insecure server connections when using SSL. (Env: $FUNC_INSECURE)
   -p, --path string           Path to the project directory (Env: $FUNC_PATH) (default ".")
       --source string         Source value for the request data. (Env: $FUNC_SOURCE) (default "/boson/fn")
   -t, --target string         Function instance to invoke.  Can be 'local', 'remote' or a URL.  Defaults to auto-discovery if not provided. (Env: $FUNC_TARGET)

http/transport.go

@@ -25,8 +25,9 @@ type RoundTripCloser interface {
 }
 
 type options struct {
-	selectCA        func(ctx context.Context, serverName string) (*x509.Certificate, error)
+	selectCA           func(ctx context.Context, serverName string) (*x509.Certificate, error)
-	inClusterDialer ContextDialer
+	inClusterDialer    ContextDialer
+	insecureSkipVerify bool
 }
 
 type Option func(*options)
@@ -43,13 +44,20 @@ func WithInClusterDialer(inClusterDialer ContextDialer) Option {
 	}
 }
 
+func WithInsecureSkipVerify(insecureSkipVerify bool) Option {
+	return func(o *options) {
+		o.insecureSkipVerify = insecureSkipVerify
+	}
+}
+
 // NewRoundTripper returns new closable RoundTripper that first tries to dial connection in standard way,
 // if the dial operation fails due to hostname resolution the RoundTripper tries to dial from in cluster pod.
 //
 // This is useful for accessing cluster internal services (pushing a CloudEvent into Knative broker).
 func NewRoundTripper(opts ...Option) RoundTripCloser {
 	o := options{
-		inClusterDialer: k8s.NewLazyInitInClusterDialer(),
+		inClusterDialer:    k8s.NewLazyInitInClusterDialer(),
+		insecureSkipVerify: false,
 	}
 	for _, option := range opts {
 		option(&o)
@@ -62,6 +70,8 @@ func NewRoundTripper(opts ...Option) RoundTripCloser {
 
 	combinedDialer := newDialerWithFallback(primaryDialer, secondaryDialer)
 
+	httpTransport.TLSClientConfig = &tls.Config{InsecureSkipVerify: o.insecureSkipVerify}
+
 	httpTransport.DialContext = combinedDialer.DialContext
 
 	httpTransport.DialTLSContext = newDialTLSContext(combinedDialer, httpTransport.TLSClientConfig, o.selectCA)