add fcmOptions in WebpushConfig

.travis.yml

@@ -1,9 +1,6 @@
 language: go
 
 go:
-  - 1.6.x
-  - 1.7.x
-  - 1.8.x
   - 1.9.x
   - "1.10.x"
   - master
@@ -18,16 +15,12 @@ matrix:
 
 go_import_path: firebase.google.com/go
 
-before_install:
-    # Golint requires Go 1.7 or later.
-    - if ! [[ "$TRAVIS_GO_VERSION" =~ ^1\.6\.([0-9]+|x)$ ]]; then go get github.com/golang/lint/golint; fi
-
 install:
-    # Prior to golang 1.8, this can trigger an error for packages containing only tests.
+    - go get golang.org/x/lint/golint
     - go get -t -v $(go list ./... | grep -v integration)
 
 script:
-    - if ! [[ "$TRAVIS_GO_VERSION" =~ ^1\.6\.([0-9]+|x)+$ ]]; then golint -set_exit_status $(go list ./...); fi
+    - golint -set_exit_status $(go list ./...)
     - ./.travis.gofmt.sh
     - go test -v -race -test.short ./...        # Run tests with the race detector.
     - go vet -v ./...                           # Run Go static analyzer.

README.md

@@ -41,9 +41,9 @@ requests, code review feedback, and also pull requests.
 
 ## Supported Go Versions
 
-We support Go v1.6 and higher.
+We support Go v1.9 and higher.
 [Continuous integration](https://travis-ci.org/firebase/firebase-admin-go) system
-tests the code on Go v1.6 through v1.10.
+tests the code on Go v1.9 through v1.10.
 
 ## Documentation
 

messaging/messaging.go

@@ -27,7 +27,6 @@ import (
 
 	"firebase.google.com/go/internal"
 	"golang.org/x/net/context"
-
 	"google.golang.org/api/transport"
 )
 
@@ -225,6 +224,7 @@ type WebpushConfig struct {
 	Headers      map[string]string    `json:"headers,omitempty"`
 	Data         map[string]string    `json:"data,omitempty"`
 	Notification *WebpushNotification `json:"notification,omitempty"`
+	FcmOptions   *WebpushFcmOptions   `json:"fcmOptions,omitempty"`
 }
 
 // WebpushNotificationAction represents an action that can be performed upon receiving a WebPush notification.
@@ -257,6 +257,11 @@ type WebpushNotification struct {
 	CustomData         map[string]interface{}
 }
 
+// WebpushFcmOptions Options for features provided by the FCM SDK for Web.
+type WebpushFcmOptions struct {
+	Link string `json:"link,omitempty"`
+}
+
 // standardFields creates a map containing all the fields except the custom data.
 func (n *WebpushNotification) standardFields() map[string]interface{} {
 	m := make(map[string]interface{})

messaging/messaging_test.go

@@ -24,9 +24,8 @@ import (
 	"testing"
 	"time"
 
-	"golang.org/x/net/context"
-
 	"firebase.google.com/go/internal"
+	"golang.org/x/net/context"
 	"google.golang.org/api/option"
 )
 
@@ -226,6 +225,9 @@ var validMessages = []struct {
 					Vibrate:            []int{100, 200, 100},
 					CustomData:         map[string]interface{}{"k1": "v1", "k2": "v2"},
 				},
+				FcmOptions: &WebpushFcmOptions{
+					Link: "https://link.com",
+				},
 			},
 			Topic: "test-topic",
 		},
@@ -254,6 +256,9 @@ var validMessages = []struct {
 					"k1":                 "v1",
 					"k2":                 "v2",
 				},
+				"fcmOptions": map[string]interface{}{
+					"link": "https://link.com",
+				},
 			},
 			"topic": "test-topic",
 		},
@@ -593,6 +598,32 @@ var invalidMessages = []struct {
 		},
 		want: `multiple specifications for the key "dir"`,
 	},
+	{
+		name: "InvalidWebpushFcmOptionsLink",
+		req: &Message{
+			Webpush: &WebpushConfig{
+				Notification: &WebpushNotification{},
+				FcmOptions: &WebpushFcmOptions{
+					Link: "link",
+				},
+			},
+			Topic: "topic",
+		},
+		want: `invalid link URL: "link"`,
+	},
+	{
+		name: "InvalidWebpushFcmOptionsLinkScheme",
+		req: &Message{
+			Webpush: &WebpushConfig{
+				Notification: &WebpushNotification{},
+				FcmOptions: &WebpushFcmOptions{
+					Link: "http://link.com",
+				},
+			},
+			Topic: "topic",
+		},
+		want: `invalid link URL: "http://link.com"; want scheme: "https"`,
+	},
 }
 
 var invalidTopicMgtArgs = []struct {

messaging/messaging_utils.go

@@ -16,6 +16,7 @@ package messaging
 
 import (
 	"fmt"
+	"net/url"
 	"regexp"
 	"strings"
 )
@@ -145,6 +146,15 @@ func validateWebpushConfig(webpush *WebpushConfig) error {
 			return fmt.Errorf("multiple specifications for the key %q", k)
 		}
 	}
+	if webpush.FcmOptions != nil {
+		link := webpush.FcmOptions.Link
+		p, err := url.ParseRequestURI(link)
+		if err != nil {
+			return fmt.Errorf("invalid link URL: %q", link)
+		} else if p.Scheme != "https" {
+			return fmt.Errorf("invalid link URL: %q; want scheme: %q", link, "https")
+		}
+	}
 	return nil
 }