向ApiFuture<WriteResult>和ApiFuture<DocumentSnapshot>添加偵聽器時要傳遞什么Runnable？

我正在使用 Java 語言的 Google Cloud Functions 將檔案保存到 Google Cloud Firestore。

    DocumentReference userDoc = firestore.document("Users/user1");
    final Map<String,Object> UserData = new HashMap<String,Object>(){{
      put("Name", "First Last");
    }};
    ApiFuture<WriteResult> future = userDoc.set(UserData);

我想在future這里添加一個監聽器。

    future.addListener(/* which Runnable listener to pass here to 
                      process the WriteResult object 
                      when the future completes? */, MoreExecutors.directExecutor());

我找不到可以在這里達到目的的 Runnable。我知道我可以呼叫future.get()方法來保持執行并獲取 WriteResult 物件，但我不想這樣做。

此外，無法理解如何將偵聽器添加到userDoc.get().

我已經搜索過 StackOverflow 和 Github。找不到任何有用的東西。

所有帖子都討論了ApiFuture.addListener()哪些已被棄用且現在不可用。

請在我的 pom.xml 下面找到

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>some.group.Id</groupId>
  <artifactId>cloud-functions</artifactId>
  <version>1.0-SNAPSHOT</version>
  <properties>
    <maven.compiler.source>11</maven.compiler.source>
    <maven.compiler.target>11</maven.compiler.target>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>
  <dependencies>
        <!-- https://mvnrepository.com/artifact/com.google.cloud.functions/functions-framework-api -->
    <dependency>
      <groupId>com.google.cloud.functions</groupId>
      <artifactId>functions-framework-api</artifactId>
      <version>1.0.4</version>
      <scope>provided</scope>
    </dependency>
    <!-- https://mvnrepository.com/artifact/com.google.code.gson/gson -->
    <dependency>
      <groupId>com.google.code.gson</groupId>
      <artifactId>gson</artifactId>
      <version>2.8.9</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/com.google.firebase/firebase-auth -->
    <!-- https://mvnrepository.com/artifact/com.google.firebase/firebase-auth -->
    <dependency>
      <groupId>com.google.firebase</groupId>
      <artifactId>firebase-admin</artifactId>
      <version>8.1.0</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/com.google.cloud/google-cloud-pubsub -->
    <dependency>
      <groupId>com.google.cloud</groupId>
      <artifactId>google-cloud-pubsub</artifactId>
      <version>1.114.7</version>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <groupId>com.google.cloud.functions</groupId>
        <artifactId>function-maven-plugin</artifactId>
        <version>0.10.0</version>
        <configuration>
          <functionTarget>com.infonotics.stocklyticsusa.FirstFunction</functionTarget>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

已經浪費了2天。請幫忙。

uj5u.com熱心網友回復：

根據檔案，您可以使用ApiFutures.addCallBack：

static <V> void     addCallback(ApiFuture<V> future, ApiFutureCallback<? super V> callback, Executor executor) 

https://googleapis.github.io/api-common-java/1.9.1/apidocs/

例子：

    ApiFuture<WriteResult> result1 = 

    ApiFutures.addCallback(result1, new ApiFutureCallback<WriteResult>() {
        @Override
        public void onFailure(Throwable throwable) {

        }

        @Override
        public void onSuccess(WriteResult writeResult) {

        }
    }, Runnable::run);

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