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messaging.go
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messaging.go
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// Copyright 2018 Google Inc.
//
// 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 snippets
import (
"context"
"fmt"
"log"
"time"
firebase "firebase.google.com/go"
"firebase.google.com/go/messaging"
)
func sendToToken(app *firebase.App) {
// [START send_to_token_golang]
// Obtain a messaging.Client from the App.
ctx := context.Background()
client, err := app.Messaging(ctx)
if err != nil {
log.Fatalf("error getting Messaging client: %v\n", err)
}
// This registration token comes from the client FCM SDKs.
registrationToken := "YOUR_REGISTRATION_TOKEN"
// See documentation on defining a message payload.
message := &messaging.Message{
Data: map[string]string{
"score": "850",
"time": "2:45",
},
Token: registrationToken,
}
// Send a message to the device corresponding to the provided
// registration token.
response, err := client.Send(ctx, message)
if err != nil {
log.Fatalln(err)
}
// Response is a message ID string.
fmt.Println("Successfully sent message:", response)
// [END send_to_token_golang]
}
func sendToTopic(ctx context.Context, client *messaging.Client) {
// [START send_to_topic_golang]
// The topic name can be optionally prefixed with "/topics/".
topic := "highScores"
// See documentation on defining a message payload.
message := &messaging.Message{
Data: map[string]string{
"score": "850",
"time": "2:45",
},
Topic: topic,
}
// Send a message to the devices subscribed to the provided topic.
response, err := client.Send(ctx, message)
if err != nil {
log.Fatalln(err)
}
// Response is a message ID string.
fmt.Println("Successfully sent message:", response)
// [END send_to_topic_golang]
}
func sendToCondition(ctx context.Context, client *messaging.Client) {
// [START send_to_condition_golang]
// Define a condition which will send to devices which are subscribed
// to either the Google stock or the tech industry topics.
condition := "'stock-GOOG' in topics || 'industry-tech' in topics"
// See documentation on defining a message payload.
message := &messaging.Message{
Data: map[string]string{
"score": "850",
"time": "2:45",
},
Condition: condition,
}
// Send a message to devices subscribed to the combination of topics
// specified by the provided condition.
response, err := client.Send(ctx, message)
if err != nil {
log.Fatalln(err)
}
// Response is a message ID string.
fmt.Println("Successfully sent message:", response)
// [END send_to_condition_golang]
}
func sendAll(ctx context.Context, client *messaging.Client) {
// This registration token comes from the client FCM SDKs.
registrationToken := "YOUR_REGISTRATION_TOKEN"
// [START send_all]
// Create a list containing up to 100 messages.
messages := []*messaging.Message{
{
Notification: &messaging.Notification{
Title: "Price drop",
Body: "5% off all electronics",
},
Token: registrationToken,
},
{
Notification: &messaging.Notification{
Title: "Price drop",
Body: "2% off all books",
},
Topic: "readers-club",
},
}
br, err := client.SendAll(context.Background(), messages)
if err != nil {
log.Fatalln(err)
}
// See the BatchResponse reference documentation
// for the contents of response.
fmt.Printf("%d messages were sent successfully\n", br.SuccessCount)
// [END send_all]
}
func sendMulticast(ctx context.Context, client *messaging.Client) {
// [START send_multicast]
// Create a list containing up to 100 registration tokens.
// This registration tokens come from the client FCM SDKs.
registrationTokens := []string{
"YOUR_REGISTRATION_TOKEN_1",
// ...
"YOUR_REGISTRATION_TOKEN_n",
}
message := &messaging.MulticastMessage{
Data: map[string]string{
"score": "850",
"time": "2:45",
},
Tokens: registrationTokens,
}
br, err := client.SendMulticast(context.Background(), message)
if err != nil {
log.Fatalln(err)
}
// See the BatchResponse reference documentation
// for the contents of response.
fmt.Printf("%d messages were sent successfully\n", br.SuccessCount)
// [END send_multicast]
}
func sendMulticastAndHandleErrors(ctx context.Context, client *messaging.Client) {
// [START send_multicast_error]
// Create a list containing up to 100 registration tokens.
// This registration tokens come from the client FCM SDKs.
registrationTokens := []string{
"YOUR_REGISTRATION_TOKEN_1",
// ...
"YOUR_REGISTRATION_TOKEN_n",
}
message := &messaging.MulticastMessage{
Data: map[string]string{
"score": "850",
"time": "2:45",
},
Tokens: registrationTokens,
}
br, err := client.SendMulticast(context.Background(), message)
if err != nil {
log.Fatalln(err)
}
if br.FailureCount > 0 {
var failedTokens []string
for idx, resp := range br.Responses {
if !resp.Success {
// The order of responses corresponds to the order of the registration tokens.
failedTokens = append(failedTokens, registrationTokens[idx])
}
}
fmt.Printf("List of tokens that caused failures: %v\n", failedTokens)
}
// [END send_multicast_error]
}
func sendDryRun(ctx context.Context, client *messaging.Client) {
message := &messaging.Message{
Data: map[string]string{
"score": "850",
"time": "2:45",
},
Token: "token",
}
// [START send_dry_run_golang]
// Send a message in the dry run mode.
response, err := client.SendDryRun(ctx, message)
if err != nil {
log.Fatalln(err)
}
// Response is a message ID string.
fmt.Println("Dry run successful:", response)
// [END send_dry_run_golang]
}
func androidMessage() *messaging.Message {
// [START android_message_golang]
oneHour := time.Duration(1) * time.Hour
message := &messaging.Message{
Android: &messaging.AndroidConfig{
TTL: &oneHour,
Priority: "normal",
Notification: &messaging.AndroidNotification{
Title: "$GOOG up 1.43% on the day",
Body: "$GOOG gained 11.80 points to close at 835.67, up 1.43% on the day.",
Icon: "stock_ticker_update",
Color: "#f45342",
},
},
Topic: "industry-tech",
}
// [END android_message_golang]
return message
}
func apnsMessage() *messaging.Message {
// [START apns_message_golang]
badge := 42
message := &messaging.Message{
APNS: &messaging.APNSConfig{
Headers: map[string]string{
"apns-priority": "10",
},
Payload: &messaging.APNSPayload{
Aps: &messaging.Aps{
Alert: &messaging.ApsAlert{
Title: "$GOOG up 1.43% on the day",
Body: "$GOOG gained 11.80 points to close at 835.67, up 1.43% on the day.",
},
Badge: &badge,
},
},
},
Topic: "industry-tech",
}
// [END apns_message_golang]
return message
}
func webpushMessage() *messaging.Message {
// [START webpush_message_golang]
message := &messaging.Message{
Webpush: &messaging.WebpushConfig{
Notification: &messaging.WebpushNotification{
Title: "$GOOG up 1.43% on the day",
Body: "$GOOG gained 11.80 points to close at 835.67, up 1.43% on the day.",
Icon: "https://my-server/icon.png",
},
},
Topic: "industry-tech",
}
// [END webpush_message_golang]
return message
}
func allPlatformsMessage() *messaging.Message {
// [START multi_platforms_message_golang]
oneHour := time.Duration(1) * time.Hour
badge := 42
message := &messaging.Message{
Notification: &messaging.Notification{
Title: "$GOOG up 1.43% on the day",
Body: "$GOOG gained 11.80 points to close at 835.67, up 1.43% on the day.",
},
Android: &messaging.AndroidConfig{
TTL: &oneHour,
Notification: &messaging.AndroidNotification{
Icon: "stock_ticker_update",
Color: "#f45342",
},
},
APNS: &messaging.APNSConfig{
Payload: &messaging.APNSPayload{
Aps: &messaging.Aps{
Badge: &badge,
},
},
},
Topic: "industry-tech",
}
// [END multi_platforms_message_golang]
return message
}
func subscribeToTopic(ctx context.Context, client *messaging.Client) {
topic := "highScores"
// [START subscribe_golang]
// These registration tokens come from the client FCM SDKs.
registrationTokens := []string{
"YOUR_REGISTRATION_TOKEN_1",
// ...
"YOUR_REGISTRATION_TOKEN_n",
}
// Subscribe the devices corresponding to the registration tokens to the
// topic.
response, err := client.SubscribeToTopic(ctx, registrationTokens, topic)
if err != nil {
log.Fatalln(err)
}
// See the TopicManagementResponse reference documentation
// for the contents of response.
fmt.Println(response.SuccessCount, "tokens were subscribed successfully")
// [END subscribe_golang]
}
func unsubscribeFromTopic(ctx context.Context, client *messaging.Client) {
topic := "highScores"
// [START unsubscribe_golang]
// These registration tokens come from the client FCM SDKs.
registrationTokens := []string{
"YOUR_REGISTRATION_TOKEN_1",
// ...
"YOUR_REGISTRATION_TOKEN_n",
}
// Unsubscribe the devices corresponding to the registration tokens from
// the topic.
response, err := client.UnsubscribeFromTopic(ctx, registrationTokens, topic)
if err != nil {
log.Fatalln(err)
}
// See the TopicManagementResponse reference documentation
// for the contents of response.
fmt.Println(response.SuccessCount, "tokens were unsubscribed successfully")
// [END unsubscribe_golang]
}