问题描述
我有一个运行在Google App Engine上的应用程序，我于2018年9月6日部署了该应用程序最新版本的最新版本，但今天该应用程序停止提供请求，并返回错误503并显示以下内容
I have an application running on Google App Engine, I deployed the last version of latest version of the application on Sep 6, 2018 but today the application stopped serving request and it is returning error 503 with the following
<HTML>
<HEAD>
<TITLE>Service Unavailable</TITLE>
</HEAD>
<BODY BGCOLOR="#FFFFFF" TEXT="#000000">
<H1>Service Unavailable</H1>
<H2>Error 503</H2>
</BODY>
</HTML>
我以为是因为我还没有迁移到过时的Cloud Endpoint v1.1到V2.0
I thought it was because i have not migrated to the deprecated Cloud Endpoint v1.1 to V2.0
但是在进行了迁移所必需的更改后，当我尝试部署它时，在运行Maven命令部署或生成文档时，它仍然返回503.
But after I made the changes necessary for migration, when I try to deploy it still returns 503 while running the Maven command to deploy or generate Docs.
我知道Google表示他们遇到了昨天在某些App Engine地区发布了问题，但我不确定这是否与我所经历的事情有关.
I am aware that Google stated that they are experiencing issues with some App Engine regions yesterday but I am not sure if it has anything to do with what I am experiencing.
我的App引擎应用程序使用美国中部地区.
My App engine application is using Us-central region.
更新:看来云终结点V1.1已关闭并且无法再为流量提供服务，因此按照迁移指南，我已经能够迁移到2.0版，但是不幸的是我得到了api发现文档
Update: Looks like cloud endpoint V1.1 has been turned off and can no longer serve traffic so following the migration guide, I have been able to migrate to version 2.0 but unfortunately I am getting an error with the api-discovery doc
这是错误
500
API发现响应缺少必填字段.
我正在努力解决这个问题
I am trying to get around this
这是我的pom.xml文件
here is my pom.xml file
<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<groupId>group-id</groupId>
<artifactId>artifact-id</artifactId>
<properties>
<app.id>project-id</app.id>
<app.version>1</app.version>
<appengine.version>1.9.64</appengine.version>
<gcloud.plugin.version>2.0.9.121.v20160815</gcloud.plugin.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
<jackson.version>2.9.0</jackson.version>
<archiveClasses>true</archiveClasses>
</properties>
<prerequisites>
<maven>3.3.9</maven>
</prerequisites>
<dependencies>
<!-- Compile/runtime dependencies -->
<dependency>
<groupId>com.google.endpoints</groupId>
<artifactId>endpoints-framework</artifactId>
<version>2.1.0</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.inject</groupId>
<artifactId>javax.inject</artifactId>
<version>1</version>
</dependency>
<!-- Objectify library ready -->
<dependency>
<groupId>com.googlecode.objectify</groupId>
<artifactId>objectify</artifactId>
<version>6.0</version>
</dependency>
<!-- Apache Commons Library -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.0</version>
</dependency>
<!-- Add support for joda money library -->
<dependency>
<groupId>org.joda</groupId>
<artifactId>joda-money</artifactId>
<version>0.10.0</version>
</dependency>
<!--Added support for joda time library -->
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.9.4</version>
</dependency>
<!-- end joda time api.-->
<!-- Load scrypt library for password encryption and decryption -->
<dependency>
<groupId>com.lambdaworks</groupId>
<artifactId>scrypt</artifactId>
<version>1.4.0</version>
</dependency>
<!-- Objectify utils to help us with currency -->
<dependency>
<groupId>com.sappenin.objectify</groupId>
<artifactId>objectify-utils</artifactId>
<version>5.1.3</version>
</dependency>
<!-- google guava -->
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>19.0</version>
</dependency>
<!-- Apache poi for excel file processing -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.15</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.poi/poi-ooxml -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.15</version>
</dependency>
<!-- jackson-dataformat-csv-->
<dependency>
<groupId>com.fasterxml.jackson.dataformat</groupId>
<artifactId>jackson-dataformat-csv</artifactId>
<version>2.7.0</version>
</dependency>
<!-- jackson data bind library for json -->
<!-- Google cloud storage ends -->
<!-- google cloud storage client -->
<dependency>
<groupId>com.google.appengine.tools</groupId>
<artifactId>appengine-gcs-client</artifactId>
<version>0.7</version>
<exclusions>
<exclusion>
<groupId>com.google.api-client</groupId>
<artifactId>google-api-client-appengine</artifactId>
</exclusion>
<exclusion>
<groupId>com.google.http-client</groupId>
<artifactId>google-http-client-jackson2</artifactId>
</exclusion>
<exclusion>
<groupId>com.google.http-client</groupId>
<artifactId>google-http-client</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.google.cloud</groupId>
<artifactId>google-cloud-storage</artifactId>
<version>0.4.0</version>
</dependency>
<dependency>
<groupId>com.google.api-client</groupId>
<artifactId>google-api-client-appengine</artifactId>
<version>1.23.0</version>
</dependency>
<dependency>
<groupId>com.google.http-client</groupId>
<artifactId>google-http-client-jackson2</artifactId>
<version>1.23.0</version>
</dependency>
<dependency>
<groupId>com.google.http-client</groupId>
<artifactId>google-http-client</artifactId>
<version>1.23.0</version>
</dependency>
<!-- Test Dependencies -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
<version>2.0.2-beta</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-stubs</artifactId>
<version>${appengine.version}</version>
<scope>test</scope>
</dependency>
<!-- Mail Dependencies with MailGun -->
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-core</artifactId>
<version>1.19.1</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-client</artifactId>
<version>1.19.1</version>
</dependency>
<dependency>
<groupId>com.sun.jersey.contribs</groupId>
<artifactId>jersey-multipart</artifactId>
<version>1.19.1</version>
</dependency>
<!-- End Mail Dependencies with MailGun -->
<dependency>
<groupId>org.freemarker</groupId>
<artifactId>freemarker-gae</artifactId>
<version>2.3.25-incubating</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<!-- Note: core-annotations version x.y.0 is generally compatible with
(identical to) version x.y.1, x.y.2, etc. -->
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>${jackson.version}</version>
</dependency>
</dependencies>
<build>
<!-- for hot reload of the web application-->
<outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes</outputDirectory>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>versions-maven-plugin</artifactId>
<version>2.1</version>
<executions>
<execution>
<phase>compile</phase>
<goals>
<goal>display-dependency-updates</goal>
<goal>display-plugin-updates</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>com.google.cloud.tools</groupId>
<artifactId>appengine-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<stage.enableJarClasses>true</stage.enableJarClasses>
<cloudSdkPath>/usr/local/Caskroom/google-cloud-sdk/latest/google-cloud-sdk</cloudSdkPath>
</configuration>
</plugin>
<plugin>
<groupId>com.google.cloud.tools</groupId>
<artifactId>appengine-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<!-- deploy configuration -->
</configuration>
</plugin>
<plugin>
<groupId>com.google.cloud.tools</groupId>
<artifactId>endpoints-framework-maven-plugin</artifactId>
<version>1.0.2</version>
<configuration>
<!-- plugin configuration -->
<hostname>project-id.appspot.com</hostname>
</configuration>
<executions>
<execution>
<goals>
<goal>discoveryDocs</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
这是我的web.xml文件
Here is my web.xml file
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 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_2_5.xsd">
<!-- Endpoints web.xml -->
<!-- [START web] -->
<servlet>
<display-name>Remote API Servlet</display-name>
<servlet-name>RemoteApiServlet</servlet-name>
<servlet-class>com.google.apphosting.utils.remoteapi.RemoteApiServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>Grader</servlet-name>
<servlet-class>com.softquest.apollo.servlets.Grader</servlet-class>
</servlet>
<servlet>
<servlet-name>SheetHandler</servlet-name>
<servlet-class>com.softquest.apollo.servlets.SheetHandler</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>RemoteApiServlet</servlet-name>
<url-pattern>/remote_api</url-pattern>
</servlet-mapping>
<!-- Score Sheet Servlet -->
<!-- Remote Api Servlet -->
<servlet>
<servlet-name>EndpointsServlet</servlet-name>
<servlet-class>com.google.api.server.spi.EndpointsServlet</servlet-class>
<init-param>
<param-name>services</param-name>
<param-value>com.softquest.apollo.services.UserServices</param-value>
</init-param>
</servlet>
<!-- Payment Response Servlet -->
<servlet>
<servlet-name>PaymentResponseServlet</servlet-name>
<servlet-class>com.softquest.apollo.servlets.PaymentResponseServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>PaymentResponseServlet</servlet-name>
<url-pattern>/PaymentResponse</url-pattern>
</servlet-mapping>
<!-- Payment Response Servlet-->
<servlet-mapping>
<servlet-name>EndpointsServlet</servlet-name>
<url-pattern>/_ah/api/*</url-pattern>
</servlet-mapping>
<!-- Objectify filter registration -->
<filter>
<filter-name>ObjectifyFilter</filter-name>
<filter-class>com.googlecode.objectify.ObjectifyFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>ObjectifyFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- Setup ServletContextListener to start up objectify entities on application -->
<servlet>
<servlet-name>BackEndStarter</servlet-name>
<servlet-class>com.softquest.apollo.BackEndStarter</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>BackEndStarter</servlet-name>
<url-pattern>/backend/starter</url-pattern>
</servlet-mapping>
<!-- Migration servlet -->
<servlet>
<servlet-name>MigrationServlet</servlet-name>
<servlet-class>com.softquest.apollo.servlets.MigrationServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>MigrationServlet</servlet-name>
<url-pattern>/migration/*</url-pattern>
</servlet-mapping>
<!-- Migration Servlet-->
<!-- Migration Handler Servlet -->
<servlet>
<servlet-name>MigrationHandler</servlet-name>
<servlet-class>com.softquest.apollo.servlets.MigrationHandler</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>MigrationHandler</servlet-name>
<url-pattern>/migration-handler/*</url-pattern>
</servlet-mapping>
<!-- End of Migration handler Servlet-->
<!-- Setup web.xml to start up context listener -->
<servlet-mapping>
<servlet-name>Grader</servlet-name>
<url-pattern>/Grader</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>SheetHandler</servlet-name>
<url-pattern>/SheetHandler</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
</web-app>
我在尝试调用api发现文档时收到此错误，我已将其追溯到
com.google.api.server.spi.EndpointsServlet文件
com.google.api.server.spi.EndpointsServlet file
if (!dispatcher.dispatch(method, path, context)) {
response.setStatus(HttpServletResponse.SC_NOT_FOUND);
response.getWriter().append("Not Found");
}
我猜测该错误已释放到某个第三方库，可能仍在使用任何较旧的云端点maven依赖项或插件.因此，我将从pom.xml中删除所有依赖项，然后尝试进行部署.
I am guessing the error is released to some third party library probably still using any of the older cloud endpoint maven dependencies or plugins. So I would remove all the dependencies from my pom.xml and try to deploy.
更新:我能够修复API发现错误，它是由与Google Guava库有关的反射错误引起的，而迁移文档指出版本19可以运行，但没有，升级到版本20及更高版本为我解决了这个问题，现在在所有端点上都收到错误404.当我能够解决此问题时，我会写一个答案.
UPDATE:I was able to fix the API discovery error, it was caused by a reflection error that had to do with the Google Guava Library, while the migration Doc had stated that Version 19 would work, it didn't, upgrading to version 20 and above fixed that for me, now I am getting error 404 on all the endpoints. I would write an answer when I am able to fix this.
推荐答案
我在端点中遇到了同样的问题，并且几个月来都没有改变，日志中也没有任何内容.我认为这可能是应用引擎问题.
Im getting the same problem on an endpoint that hasn't been changed in months, nothing is appearing in the logs either. I assume its probably an app engine problem.
我已解决了问题，尽管您提到了您尝试更新到新的Cloud Endpoint v2.0的过程，但仍然遇到了问题，该问题已解决了从v1.1到v2的迁移步骤之后的问题问题 https://cloud.google.com/endpoints/docs/frameworks/python/migration .
I fixed our problem, though you mention the you've attempted to update to the new Cloud Endpoint v2.0 and you are still having the problem it turns out for our project following the migration steps from v1.1 to v2 fixed the problem https://cloud.google.com/endpoints/docs/frameworks/python/migrating.
文档说v1.1将于8月2日关闭，我想他们已经了解了
The docs say v1.1 was to be turned off August 2nd, I guess they have just got round to it
这篇关于Google App Engine应用程序突然停止工作，返回503的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！