Firebase Auth无法与AppEngine上的Ktor App一起使用

时间:2018-10-22 04:45:42

标签: firebase google-app-engine google-cloud-firestore ktor

问题

按照Ktor tutorial Ktor Kotlin应用程序部署到AppEngine时,Firestore服务器身份验证不起作用,因此数据没有写入到指定的Firestore数据库中。

在直接在IntelliJ IDE中运行应用程序以及通过gradle appengineRun命令使用 ktor 的实现运行应用程序时,数据都会按预期的方式写入Firestore。 / p>

针对 staging production 环境,有两组AppEngine / Firebase项目。在使用gradle appengineDeploy命令进行部署之前,已通过命令gcloud config configurations list.

激活并验证了正确的SDK配置。

enter image description here

奇怪的是,使用这些策略部署的一些应用程序确实写入了Firestore,但是在再次部署该应用程序时,Firestore并未显示正在写入的新数据。

实施

Ktor设置

我有标准的 ktor 必需文件。我也有一个来自较旧实现的旧 MANIFEST.MF 文件。会造成问题吗?

src / main / resources / application.conf

ktor {
  application {
  modules = [ Initialization.main ]
  }
}

src / main / resources / webapp / WEB-INF /

appengine-web.xml

<?xml version="1.0" encoding="utf-8"?>
<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
    <threadsafe>true</threadsafe>
    <runtime>java8</runtime>
</appengine-web-app>

web.xml

<?xml version="1.0" encoding="ISO-8859-1" ?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
<servlet>
    <display-name>KtorServlet</display-name>
    <servlet-name>KtorServlet</servlet-name>
    <servlet-class>io.ktor.server.servlet.ServletApplicationEngine</servlet-class>
    <!-- path to application.conf file, required -->
    <init-param>
        <param-name>io.ktor.config</param-name>
        <param-value>application.conf</param-value>
    </init-param>
</servlet>
<servlet-mapping>
    <servlet-name>KtorServlet</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

logging.properties

.level = INFO

src / main / META-INF / MANIFEST> MF

Manifest-Version: 1.0
Main-Class: Initialization

依赖项

对于#1-3 下面概述的身份验证策略,使用Firebase Admin库:compile 'com.google.firebase:firebase-admin:6.5.0'

对于身份验证策略#4 ,使用了Google Cloud Firestore库:compile 'com.google.cloud:google-cloud-firestore:0.58.0-beta'

build.gradle

group 'coinverse'
version '1.0-SNAPSHOT'

buildscript {
    ext.kotlin_version = '1.2.61'
    ext.junitJupiterVersion  = '5.0.3'
    ext.ktor_version = '0.9.4'
    ext.appengine_version = '1.9.60'
    ext.appengine_plugin_version = '1.3.4'

repositories {
    mavenCentral()
    jcenter()
}
dependencies {
    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    classpath 'org.junit.platform:junit-platform-gradle-plugin:1.0.3'
    classpath "com.google.cloud.tools:appengine-gradle-plugin:$appengine_plugin_version"
    }
}

apply plugin: 'java'
apply plugin: 'kotlin'
apply plugin: 'war'
apply plugin: 'com.google.cloud.tools.appengine'

sourceSets {
    main.kotlin.srcDirs = [ 'src/main/kotlin' ]
}

sourceCompatibility = 1.8

repositories {
mavenCentral()
jcenter()
maven { url "https://kotlin.bintray.com/ktor" }
}

dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
    testCompile group: 'junit', name: 'junit', version: '4.12'
    testCompile("org.junit.jupiter:junit-jupiter-api:${junitJupiterVersion}")
        testRuntime("org.junit.jupiter:junit-jupiter-engine:${junitJupiterVersion}")
        testCompile("org.assertj:assertj-core:3.10.0")
        testCompileOnly('org.apiguardian:apiguardian-api:1.0.0')
        compile 'com.squareup.retrofit2:retrofit:2.3.0'
        compile 'com.squareup.retrofit2:converter-gson:2.3.0'
        compile 'com.squareup.retrofit2:adapter-rxjava:2.3.0'
        compile 'io.reactivex.rxjava2:rxjava:2.2.0'
        compile 'com.google.cloud:google-cloud-firestore:0.58.0-beta'
        // Or compile 'com.google.cloud:google-cloud-firestore:0.58.0-beta'
        compile 'com.google.firebase:firebase-admin:6.5.0'
        compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
        compile "io.ktor:ktor-server-servlet:$ktor_version"
        compile "io.ktor:ktor-html-builder:$ktor_version"
        providedCompile "com.google.appengine:appengine:$appengine_version"
}

kotlin.experimental.coroutines = 'enable'

compileKotlin {
    kotlinOptions.jvmTarget = "1.8"
}
compileTestKotlin {
    kotlinOptions.jvmTarget = "1.8"
}

task run(dependsOn: appengineRun)

appengine {
    deploy {
        version = 'price-staging-1021653pm'
        stopPreviousVersion = false
    }
}

初始化Firebase策略

1。 Initialize on Google Cloud Platform

此方法很有希望,因为凭据是自动管理的。

// Use the application default credentials
GoogleCredentials credentials = GoogleCredentials.getApplicationDefault();
FirebaseOptions options = new FirebaseOptions.Builder()
    .setCredentials(credentials)
    .setProjectId(projectId)
    .build();
FirebaseApp.initializeApp(options);

Firestore db = FirestoreClient.getFirestore();

2。 Initialize on your own server

我已经在GCP IAM和admin > 服务帐户中确认密钥ID与用于身份验证的Json对象匹配。

我正在另一个部署到AppEngine的Firestore连接的应用程序中成功使用此策略。工作的应用程序以 .Jar 的形式构建,并直接部署到AppEngine中,而无需使用 ktor ,而是采用here中概述的步骤。

// Use a service account
InputStream serviceAccount = new FileInputStream("path/to/serviceAccount.json");
GoogleCredentials credentials = GoogleCredentials.fromStream(serviceAccount);
FirebaseOptions options = new FirebaseOptions.Builder()
    .setCredentials(credentials)
    .build();
FirebaseApp.initializeApp(options);

Firestore db = FirestoreClient.getFirestore();

在正在工作的 .Jar 内置应用中,我以编程方式传递了 Json 对象,以避免找不到文件问题。我为此 ktor 应用程序尝试了相同的程序实现。它可以与gradle appengineRun一起使用,但不能在部署时使用。

val credentials = GoogleCredentials.fromStream(Gson().toJson(FirebaseCredentials(
            "service_account",
            "project-name",
            "asdfghjkl",
            "keyStringHere",
            "firebase-adminsdk-dhr30@project-name.iam.gserviceaccount.com",
            "1234567890",
            "https://accounts.google.com/o/oauth2/auth",
            "https://oauth2.googleapis.com/token",
            "https://www.googleapis.com/oauth2/v1/certs",
           "https://www.googleapis.com/robot/v1/metadata/x509/firebase-adminsdk-dhr30%40project-name-staging.iam.gserviceaccount.com"
    )).byteInputStream())
    val options = FirebaseOptions.Builder()
            .setCredentials(credentials)
            .setDatabaseUrl("https://project-name-staging.firebaseio.com")
            .build()

    FirebaseApp.initializeApp(options)

3。在您自己的服务器上初始化(Firebase控制台设置)

#2 之间的唯一区别是此设置会添加.setDatabaseUrl("https://yourProjectName.firebaseio.com")

enter image description here

4。 Initialize cloud Firestore

FirestoreOptions firestoreOptions =
FirestoreOptions.getDefaultInstance().toBuilder()
    .setProjectId(projectId)
    .build();
Firestore db = firestoreOptions.getService();

访问Firestore对象

对于#1-3 ,Firebase应用立即通过应用的 main()方法进行了初始化。然后,从对象访问 Firestore 对象。

FirebaseClient.Kt

object FirebaseClient {
    val firestore: Firestore
    init {
        firestore = FirestoreClient.getFirestore()
    }
}

对于#4 ,Firestore对象是在Kotlin对象的init{...}中创建的,并作为值存储在该对象中。

FirebaseClient.Kt

object FirebaseClient {
    val firestore: Firestore

    init {
        val firestoreOptions = FirestoreOptions.getDefaultInstance().toBuilder()
            .setTimestampsInSnapshotsEnabled(true)
            .setProjectId("project-name")
            .build()
        firestore = firestoreOptions.service
    }
}

写到Firestore

FirebaseClient.firestore.collection(someCollection).document(someDocument).collection(anotherCollection).add(someObject)

1 个答案:

答案 0 :(得分:1)

在将Firebase身份验证用于其他项目之后,我发现这与Firebase身份验证无关,而与应用程序的 main 方法有关。因此,将以上Firebase身份验证的各种实现部署到AppEngine后,即可按预期工作。

解决方案

我希望应用程序的 main 方法一旦将应用程序部署到AppEngine即可运行,类似于在IntelliJ中运行时调用应用程序的main方法的方式。但是我意识到 main 仅在调用应用程序的托管路由后才被调用。

即:https://[yourProjectName].appspot.com

我创建了一个新的 StackOverflow 帖子,以确定how to run a Ktor app's main method automatically once deployed