com.google.firebase.messaging.Message Maven / Gradle / Ivy
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This is the official Firebase Admin Java SDK. Build extraordinary native JVM apps in
minutes with Firebase. The Firebase platform can power your app’s backend, user
authentication, static hosting, and more.
/*
* 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 com.google.firebase.messaging;
import static com.google.common.base.Preconditions.checkArgument;
import com.google.api.client.util.Key;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableMap;
import com.google.common.primitives.Booleans;
import com.google.firebase.internal.NonNull;
import java.util.HashMap;
import java.util.Map;
/**
* Represents a message that can be sent via Firebase Cloud Messaging (FCM). Contains payload
* information as well as the recipient information. The recipient information must contain exactly
* one token, topic or condition parameter. Instances of this class are thread-safe and immutable.
* Use {@link Message.Builder} to create new instances.
*
* @see
* FCM message
* format
*/
public class Message {
@Key("data")
private final Map data;
@Key("notification")
private final Notification notification;
@Key("android")
private final AndroidConfig androidConfig;
@Key("webpush")
private final WebpushConfig webpushConfig;
@Key("apns")
private final ApnsConfig apnsConfig;
@Key("token")
private final String token;
@Key("topic")
private final String topic;
@Key("condition")
private final String condition;
@Key("fcm_options")
private final FcmOptions fcmOptions;
private Message(Builder builder) {
this.data = builder.data.isEmpty() ? null : ImmutableMap.copyOf(builder.data);
this.notification = builder.notification;
this.androidConfig = builder.androidConfig;
this.webpushConfig = builder.webpushConfig;
this.apnsConfig = builder.apnsConfig;
int count = Booleans.countTrue(
!Strings.isNullOrEmpty(builder.token),
!Strings.isNullOrEmpty(builder.topic),
!Strings.isNullOrEmpty(builder.condition)
);
checkArgument(count == 1, "Exactly one of token, topic or condition must be specified");
this.token = builder.token;
this.topic = stripPrefix(builder.topic);
this.condition = builder.condition;
this.fcmOptions = builder.fcmOptions;
}
@VisibleForTesting
Map getData() {
return data;
}
@VisibleForTesting
Notification getNotification() {
return notification;
}
@VisibleForTesting
AndroidConfig getAndroidConfig() {
return androidConfig;
}
@VisibleForTesting
WebpushConfig getWebpushConfig() {
return webpushConfig;
}
@VisibleForTesting
ApnsConfig getApnsConfig() {
return apnsConfig;
}
@VisibleForTesting
String getToken() {
return token;
}
@VisibleForTesting
String getTopic() {
return topic;
}
@VisibleForTesting
String getCondition() {
return condition;
}
@VisibleForTesting
FcmOptions getFcmOptions() {
return fcmOptions;
}
Map wrapForTransport(boolean dryRun) {
ImmutableMap.Builder payload = ImmutableMap.builder()
.put("message", this);
if (dryRun) {
payload.put("validate_only", true);
}
return payload.build();
}
private static String stripPrefix(String topic) {
if (Strings.isNullOrEmpty(topic)) {
return null;
}
if (topic.startsWith("/topics/")) {
topic = topic.replaceFirst("^/topics/", "");
}
// Checks for illegal characters and empty string.
checkArgument(topic.matches("[a-zA-Z0-9-_.~%]+"), "Malformed topic name");
return topic;
}
/**
* Creates a new {@link Message.Builder}.
*
* @return A {@link Message.Builder} instance.
*/
public static Builder builder() {
return new Builder();
}
public static class Builder {
private final Map data = new HashMap<>();
private Notification notification;
private AndroidConfig androidConfig;
private WebpushConfig webpushConfig;
private ApnsConfig apnsConfig;
private String token;
private String topic;
private String condition;
private FcmOptions fcmOptions;
private Builder() {}
/**
* Sets the notification information to be included in the message.
*
* @param notification A {@link Notification} instance.
* @return This builder.
*/
public Builder setNotification(Notification notification) {
this.notification = notification;
return this;
}
/**
* Sets the Android-specific information to be included in the message.
*
* @param androidConfig An {@link AndroidConfig} instance.
* @return This builder.
*/
public Builder setAndroidConfig(AndroidConfig androidConfig) {
this.androidConfig = androidConfig;
return this;
}
/**
* Sets the Webpush-specific information to be included in the message.
*
* @param webpushConfig A {@link WebpushConfig} instance.
* @return This builder.
*/
public Builder setWebpushConfig(WebpushConfig webpushConfig) {
this.webpushConfig = webpushConfig;
return this;
}
/**
* Sets the information specific to APNS (Apple Push Notification Service).
*
* @param apnsConfig An {@link ApnsConfig} instance.
* @return This builder.
*/
public Builder setApnsConfig(ApnsConfig apnsConfig) {
this.apnsConfig = apnsConfig;
return this;
}
/**
* Sets the registration token of the device to which the message should be sent.
*
* @param token A valid device registration token.
* @return This builder.
*/
public Builder setToken(String token) {
this.token = token;
return this;
}
/**
* Sets the name of the FCM topic to which the message should be sent. Topic names may
* contain the {@code /topics/} prefix.
*
* @param topic A valid topic name.
* @return This builder.
*/
public Builder setTopic(String topic) {
this.topic = topic;
return this;
}
/**
* Sets the FCM condition to which the message should be sent.
*
* @param condition A valid condition string (e.g. {@code "'foo' in topics"}).
* @return This builder.
*/
public Builder setCondition(String condition) {
this.condition = condition;
return this;
}
/**
* Adds the given key-value pair to the message as a data field. Key or the value may not be
* null.
*
* @param key Name of the data field. Must not be null.
* @param value Value of the data field. Must not be null.
* @return This builder.
*/
public Builder putData(@NonNull String key, @NonNull String value) {
this.data.put(key, value);
return this;
}
/**
* Adds all the key-value pairs in the given map to the message as data fields. None of the
* keys or values may be null.
*
* @param map A non-null map of data fields. Map must not contain null keys or values.
* @return This builder.
*/
public Builder putAllData(@NonNull Map map) {
this.data.putAll(map);
return this;
}
/**
* Sets the {@link FcmOptions}, which can be overridden by the platform-specific {@code
* fcm_options} fields.
*/
public Builder setFcmOptions(FcmOptions fcmOptions) {
this.fcmOptions = fcmOptions;
return this;
}
/**
* Creates a new {@link Message} instance from the parameters set on this builder.
*
* @return A new {@link Message} instance.
* @throws IllegalArgumentException If any of the parameters set on the builder are invalid.
*/
public Message build() {
return new Message(this);
}
}
}