Google-cloud-java: Bad dependency for `google-cloud-logging` vs `google-cloud-datastore`

Created on 10 May 2017 · 14Comments · Source: googleapis/google-cloud-java

For https://github.com/GoogleCloudPlatform/jetty-runtime we are trying to use both google-cloud-logging and google-cloud-datastore, but there appears to be incompatible dependencies.

With a simple pom like:

<?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>
  <name>Google Cloud Example</name>
  <groupId>org.acme</groupId>
  <version>1.0.0</version>
  <artifactId>example</artifactId>
  <packaging>jar</packaging>

  <dependencies>
    <dependency>
      <groupId>com.google.cloud</groupId>
      <artifactId>google-cloud-logging</artifactId>
      <version>1.0.1</version>
    </dependency>
  </dependencies>
</project>

we get the following dependency:tree:

[INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @ example ---
[INFO] org.acme:example:jar:1.0.0
[INFO] \- com.google.cloud:google-cloud-logging:jar:1.0.1:compile
[INFO]    +- io.netty:netty-tcnative-boringssl-static:jar:1.1.33.Fork26:compile
[INFO]    +- com.google.cloud:google-cloud-core:jar:1.0.1:compile
[INFO]    |  +- com.google.guava:guava:jar:19.0:compile
[INFO]    |  +- joda-time:joda-time:jar:2.9.2:compile
[INFO]    |  +- org.json:json:jar:20160810:compile
[INFO]    |  +- com.google.api:api-common:jar:1.0.0:compile
[INFO]    |  +- com.google.api:gax:jar:1.0.0:compile
[INFO]    |  +- com.google.protobuf:protobuf-java-util:jar:3.2.0:compile
[INFO]    |  |  \- com.google.code.gson:gson:jar:2.7:compile
[INFO]    |  +- com.google.api.grpc:proto-google-common-protos:jar:0.1.9:compile
[INFO]    |  \- com.google.api.grpc:proto-google-iam-v1:jar:0.1.9:compile
[INFO]    +- com.google.cloud:google-cloud-core-grpc:jar:1.0.1:compile
[INFO]    |  +- com.google.protobuf:protobuf-java:jar:3.2.0:compile
[INFO]    |  \- io.grpc:grpc-protobuf:jar:1.2.0:compile
[INFO]    |     \- io.grpc:grpc-protobuf-lite:jar:1.2.0:compile
[INFO]    +- com.google.api:gax-grpc:jar:0.16.0:compile
[INFO]    |  +- com.google.auth:google-auth-library-oauth2-http:jar:0.4.0:compile
[INFO]    |  |  +- com.google.http-client:google-http-client:jar:1.19.0:compile
[INFO]    |  |  |  \- org.apache.httpcomponents:httpclient:jar:4.0.1:compile
[INFO]    |  |  |     +- org.apache.httpcomponents:httpcore:jar:4.0.1:compile
[INFO]    |  |  |     +- commons-logging:commons-logging:jar:1.1.1:compile
[INFO]    |  |  |     \- commons-codec:commons-codec:jar:1.3:compile
[INFO]    |  |  \- com.google.http-client:google-http-client-jackson2:jar:1.19.0:compile
[INFO]    |  |     \- com.fasterxml.jackson.core:jackson-core:jar:2.1.3:compile
[INFO]    |  +- com.google.auto.value:auto-value:jar:1.2:compile
[INFO]    |  +- org.threeten:threetenbp:jar:1.3.3:compile
[INFO]    |  \- com.google.code.findbugs:jsr305:jar:3.0.0:compile
[INFO]    +- com.google.api.grpc:proto-google-cloud-logging-v2:jar:0.1.9:compile
[INFO]    +- io.grpc:grpc-netty:jar:1.2.0:compile
[INFO]    |  +- io.grpc:grpc-core:jar:1.2.0:compile (version selected from constraint [1.2.0,1.2.0])
[INFO]    |  |  +- com.google.errorprone:error_prone_annotations:jar:2.0.11:compile
[INFO]    |  |  +- io.grpc:grpc-context:jar:1.2.0:compile
[INFO]    |  |  \- com.google.instrumentation:instrumentation-api:jar:0.3.0:compile
[INFO]    |  +- io.netty:netty-codec-http2:jar:4.1.8.Final:compile (version selected from constraint [4.1.8.Final,4.1.8.Final])
[INFO]    |  |  +- io.netty:netty-codec-http:jar:4.1.8.Final:compile
[INFO]    |  |  |  \- io.netty:netty-codec:jar:4.1.8.Final:compile
[INFO]    |  |  \- io.netty:netty-handler:jar:4.1.8.Final:compile
[INFO]    |  |     \- io.netty:netty-buffer:jar:4.1.8.Final:compile
[INFO]    |  |        \- io.netty:netty-common:jar:4.1.8.Final:compile
[INFO]    |  \- io.netty:netty-handler-proxy:jar:4.1.8.Final:compile
[INFO]    |     +- io.netty:netty-transport:jar:4.1.8.Final:compile
[INFO]    |     |  \- io.netty:netty-resolver:jar:4.1.8.Final:compile
[INFO]    |     \- io.netty:netty-codec-socks:jar:4.1.8.Final:compile
[INFO]    +- io.grpc:grpc-stub:jar:1.2.0:compile
[INFO]    \- io.grpc:grpc-auth:jar:1.2.0:compile
[INFO]       \- com.google.auth:google-auth-library-credentials:jar:0.4.0:compile

Note that 0.4.0 version of com.google.auth:google-auth-library-oauth2-http:jar

The google-cloud-datastore version depends instead on 0.6.1 as you can see in the following dependency:tree:

[INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @ example ---
[INFO] org.acme:example:jar:1.0.0
[INFO] \- com.google.cloud:google-cloud-datastore:jar:1.0.1:compile
[INFO]    +- com.google.cloud:google-cloud-core:jar:1.0.1:compile
[INFO]    |  +- com.google.guava:guava:jar:19.0:compile
[INFO]    |  +- joda-time:joda-time:jar:2.9.2:compile
[INFO]    |  +- org.json:json:jar:20160810:compile
[INFO]    |  +- com.google.api:api-common:jar:1.0.0:compile
[INFO]    |  |  +- com.google.auto.value:auto-value:jar:1.1:compile
[INFO]    |  |  \- com.google.code.findbugs:jsr305:jar:3.0.0:compile
[INFO]    |  +- com.google.api:gax:jar:1.0.0:compile
[INFO]    |  |  \- org.threeten:threetenbp:jar:1.3.3:compile
[INFO]    |  +- com.google.protobuf:protobuf-java-util:jar:3.2.0:compile
[INFO]    |  |  \- com.google.code.gson:gson:jar:2.7:compile
[INFO]    |  +- com.google.api.grpc:proto-google-common-protos:jar:0.1.9:compile
[INFO]    |  \- com.google.api.grpc:proto-google-iam-v1:jar:0.1.9:compile
[INFO]    +- com.google.cloud:google-cloud-core-http:jar:1.0.1:compile
[INFO]    |  +- com.google.auth:google-auth-library-credentials:jar:0.6.1:compile
[INFO]    |  +- com.google.auth:google-auth-library-oauth2-http:jar:0.6.1:compile
[INFO]    |  |  \- com.google.http-client:google-http-client-jackson2:jar:1.19.0:compile
[INFO]    |  |     \- com.fasterxml.jackson.core:jackson-core:jar:2.1.3:compile
[INFO]    |  +- com.google.http-client:google-http-client:jar:1.21.0:compile
[INFO]    |  |  \- org.apache.httpcomponents:httpclient:jar:4.0.1:compile
[INFO]    |  |     +- org.apache.httpcomponents:httpcore:jar:4.0.1:compile
[INFO]    |  |     +- commons-logging:commons-logging:jar:1.1.1:compile
[INFO]    |  |     \- commons-codec:commons-codec:jar:1.3:compile
[INFO]    |  +- com.google.oauth-client:google-oauth-client:jar:1.21.0:compile
[INFO]    |  +- com.google.api-client:google-api-client:jar:1.21.0:compile
[INFO]    |  +- com.google.http-client:google-http-client-appengine:jar:1.21.0:compile
[INFO]    |  \- com.google.http-client:google-http-client-jackson:jar:1.21.0:compile
[INFO]    |     \- org.codehaus.jackson:jackson-core-asl:jar:1.9.11:compile
[INFO]    +- com.google.cloud.datastore:datastore-v1-protos:jar:1.3.0:compile
[INFO]    |  \- com.google.protobuf:protobuf-java:jar:3.0.0:compile
[INFO]    +- com.google.cloud.datastore:datastore-v1-proto-client:jar:1.3.0:compile
[INFO]    |  \- com.google.http-client:google-http-client-protobuf:jar:1.20.0:compile
[INFO]    \- com.google.api.grpc:grpc-google-common-protos:jar:0.1.9:compile
[INFO]       +- io.grpc:grpc-stub:jar:1.2.0:compile
[INFO]       |  \- io.grpc:grpc-core:jar:1.2.0:compile
[INFO]       |     +- com.google.errorprone:error_prone_annotations:jar:2.0.11:compile
[INFO]       |     +- io.grpc:grpc-context:jar:1.2.0:compile
[INFO]       |     \- com.google.instrumentation:instrumentation-api:jar:0.3.0:compile
[INFO]       \- io.grpc:grpc-protobuf:jar:1.2.0:compile
[INFO]          \- io.grpc:grpc-protobuf-lite:jar:1.2.0:compile

If a pom lists both datastore and logging dependencies, for some reason the 0.4.0 version is picked, which fails to work with datastore (@janbartel can you comment with the exception you are getting).

datastore logging dependencies p0

Source

gregw

👍1

Most helpful comment

I have excluded both google-auth-library-credentials and google-auth-library-oauth2-http in my pom and my sample application executes without exception.

This is the dependency section my pom:

<dependencies>
    <dependency>
      <groupId>com.google.cloud</groupId>
      <artifactId>google-cloud-logging</artifactId>
      <version>1.0.1</version>
      <exclusions>
        <exclusion>
          <groupId>com.google.auth</groupId>
          <artifactId>google-auth-library-oauth2-http</artifactId>
        </exclusion>
        <exclusion>
          <groupId>com.google.auth</groupId>
          <artifactId>google-auth-library-credentials</artifactId>
        </exclusion>
      </exclusions> 
    </dependency>
    <dependency>
      <groupId>com.google.cloud</groupId>
      <artifactId>google-cloud-datastore</artifactId>
      <version>1.0.1</version>
      <exclusions>
        <exclusion>
          <groupId>com.google.auth</groupId>
          <artifactId>google-auth-library-oauth2-http</artifactId>
        </exclusion>
        <exclusion>
          <groupId>com.google.auth</groupId>
          <artifactId>google-auth-library-credentials</artifactId>
        </exclusion>
      </exclusions> 
    </dependency>
    <dependency>
      <groupId>com.google.auth</groupId>
      <artifactId>google-auth-library-oauth2-http</artifactId>
      <version>0.6.1</version>
     </dependency>
     <dependency>
      <groupId>com.google.auth</groupId>
      <artifactId>google-auth-library-credentials</artifactId>
      <version>0.6.1</version>
    </dependency>
  </dependencies>

You also can view and download the entire sample application here

shinfan on 10 May 2017

👍3

All 14 comments

Strangely enough, if I checkout from source with the v0.17.2 tag, then a dependency:tree in google-cloud-logging reports the correct 0.6.1 version? So perhaps something went strange in the release process?

gregw on 10 May 2017

Here's the relevant portion of the stack trace we get when we try to use gcloud datastore with gcloud logging:

java.lang.NoClassDefFoundError: com/google/auth/http/HttpTransportFactory
    at com.google.cloud.http.HttpTransportOptions.<init>(HttpTransportOptions.java:127)
    at com.google.cloud.http.HttpTransportOptions.<init>(HttpTransportOptions.java:42)
    at com.google.cloud.http.HttpTransportOptions$Builder.build(HttpTransportOptions.java:88)
    at com.google.cloud.datastore.DatastoreOptions.getDefaultHttpTransportOptions(DatastoreOptions.java:142)
    at com.google.cloud.datastore.DatastoreOptions$DatastoreDefaults.getDefaultTransportOptions(DatastoreOptions.java:137)
    at com.google.cloud.ServiceOptions.<init>(ServiceOptions.java:254)
    at com.google.cloud.datastore.DatastoreOptions.<init>(DatastoreOptions.java:102)
    at com.google.cloud.datastore.DatastoreOptions.<init>(DatastoreOptions.java:35)
    at com.google.cloud.datastore.DatastoreOptions$Builder.build(DatastoreOptions.java:89)
    at com.google.cloud.datastore.DatastoreOptions.getDefaultInstance(DatastoreOptions.java:158)
    at org.eclipse.jetty.gcloud.session.GCloudSessionDataStore.doStart(GCloudSessionDataStore.java:451)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
    at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:131)
    at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:113)
    at org.eclipse.jetty.server.session.AbstractSessionCache.doStart(AbstractSessionCache.java:225)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
    at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:131)
    at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:113)
    at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:113)
    at org.eclipse.jetty.server.handler.ScopedHandler.doStart(ScopedHandler.java:120)
    at org.eclipse.jetty.server.session.SessionHandler.doStart(SessionHandler.java:503)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
    at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:131)
    at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:105)
    at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:113)
    at org.eclipse.jetty.server.handler.ScopedHandler.doStart(ScopedHandler.java:120)
    at org.eclipse.jetty.server.handler.ContextHandler.startContext(ContextHandler.java:844)
    at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:344)
    at org.eclipse.jetty.webapp.WebAppContext.startWebapp(WebAppContext.java:1501)
    at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1463)
    at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:785)
    at org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:261)
    at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:545)

janbartel on 10 May 2017

Note that excluding the older 0.4.0 com.google.auth:google-auth-library-oauth2-http:jar in favour of the newer 0.6.1 version reveals that the dependency 'io.grpc:grpc-auth:jar:1.2.0also has a dependency clash, this time forcom.google.auth:google-auth-library-credentials:jar:0.4.0`.

Here's the exception:

Exception in thread "main" java.lang.NoClassDefFoundError: com/google/auth/ServiceAccountSigner
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at com.google.cloud.ServiceOptions.defaultCredentials(ServiceOptions.java:269)
    at com.google.cloud.ServiceOptions.<init>(ServiceOptions.java:244)
    at com.google.cloud.logging.LoggingOptions.<init>(LoggingOptions.java:102)
    at com.google.cloud.logging.LoggingOptions$Builder.build(LoggingOptions.java:96)
    at com.google.cloud.logging.LoggingOptions.getDefaultInstance(LoggingOptions.java:55)
    at com.google.cloud.logging.LoggingHandler.<init>(LoggingHandler.java:174)
    at com.google.cloud.logging.LoggingHandler.<init>(LoggingHandler.java:155)
    at com.google.cloud.logging.LoggingHandler.<init>(LoggingHandler.java:124)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at java.lang.Class.newInstance(Class.java:442)
    at java.util.logging.LogManager$5.run(LogManager.java:966)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.util.logging.LogManager.loadLoggerHandlers(LogManager.java:958)
    at java.util.logging.LogManager.initializeGlobalHandlers(LogManager.java:1578)
    at java.util.logging.LogManager.access$1500(LogManager.java:145)
    at java.util.logging.LogManager$RootLogger.accessCheckedHandlers(LogManager.java:1667)
    at java.util.logging.Logger.getHandlers(Logger.java:1777)
    at java.util.logging.Logger.log(Logger.java:735)

janbartel on 10 May 2017

@janbartel @gregw There is an effort to tackle the dependency conflict issues across the board in the client libs. This is a useful discovery for that effort, but hopefully we're able to resolve it soon. @garrettjonesgoogle PTAL

meltsufin on 10 May 2017

@shinfan , I am marking this P0 because datastore and logging can't be used together currently.

garrettjonesgoogle on 10 May 2017

I will take a look.

shinfan on 10 May 2017

I have excluded both google-auth-library-credentials and google-auth-library-oauth2-http in my pom and my sample application executes without exception.

This is the dependency section my pom:

<dependencies>
    <dependency>
      <groupId>com.google.cloud</groupId>
      <artifactId>google-cloud-logging</artifactId>
      <version>1.0.1</version>
      <exclusions>
        <exclusion>
          <groupId>com.google.auth</groupId>
          <artifactId>google-auth-library-oauth2-http</artifactId>
        </exclusion>
        <exclusion>
          <groupId>com.google.auth</groupId>
          <artifactId>google-auth-library-credentials</artifactId>
        </exclusion>
      </exclusions> 
    </dependency>
    <dependency>
      <groupId>com.google.cloud</groupId>
      <artifactId>google-cloud-datastore</artifactId>
      <version>1.0.1</version>
      <exclusions>
        <exclusion>
          <groupId>com.google.auth</groupId>
          <artifactId>google-auth-library-oauth2-http</artifactId>
        </exclusion>
        <exclusion>
          <groupId>com.google.auth</groupId>
          <artifactId>google-auth-library-credentials</artifactId>
        </exclusion>
      </exclusions> 
    </dependency>
    <dependency>
      <groupId>com.google.auth</groupId>
      <artifactId>google-auth-library-oauth2-http</artifactId>
      <version>0.6.1</version>
     </dependency>
     <dependency>
      <groupId>com.google.auth</groupId>
      <artifactId>google-auth-library-credentials</artifactId>
      <version>0.6.1</version>
    </dependency>
  </dependencies>

You also can view and download the entire sample application here

shinfan on 10 May 2017

👍3

@shinfan fyi pubsub has the same problem as logging in that grpc-auth 1.2 uses om.google.auth:google-auth-library-credentials:jar:0.4.0:compile

I'm sure a fix in the parent will fix both, but be aware of it.

https://github.com/GoogleCloudPlatform/google-cloud-java/blob/master/google-cloud-pubsub/pom.xml#L55
<dependency> <groupId>io.grpc</groupId> <artifactId>grpc-auth</artifactId> </dependency>

ofiesh on 11 May 2017

Similar issue in google-cloud-resourcemanager. It uses v1beta1-rev10 of the client-library and refers to Cloudresourcemanager which is now camel case in all the latest client libraries. Gradle tends to resolve the newer client libraries, so this happens at runtime:

java.lang.NoClassDefFoundError: com/google/api/services/cloudresourcemanager/Cloudresourcemanager$Builder

hienle-hps on 17 May 2017

https://github.com/googleapis/gax-java/pull/310 should fix the problem. The next released google-cloud-java library should contain the fix.

Before that, the workarounds are:

Switch order in which the dependencies are mentioned in the pom: datastore dependency should go before logging (yes, order matters for maven dependency resolution) - this should fix the issue
Alternatively you can add the following in the module pom, to explicitly tell maven which versions to use for transitive dependencies:

  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>com.google.auth</groupId>
        <artifactId>google-auth-library-credentials</artifactId>
        <version>0.6.1</version>
      </dependency>
      <dependency>
        <groupId>com.google.auth</groupId>
        <artifactId>google-auth-library-oauth2-http</artifactId>
        <version>0.6.1</version>
      </dependency>
    </dependencies>
  </dependencyManagement>

Alternatively https://github.com/GoogleCloudPlatform/google-cloud-java/issues/2050#issuecomment-300624496 is another workaround for the issue.

vam-google on 23 May 2017

👍1

@hienle-hps your PR looks reasonable, but it is solving a different issue. Please sign the Contributor License Agreement (the link is in your PR) and then ping anyone from our team and/or assign as reviewers so we can merge your PR. Closing this issue now as the pending PR is not related to it.

vam-google on 23 May 2017

Exception in thread "main" java.lang.NoClassDefFoundError: com/google/auth/Credentials
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1007)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:174)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:801)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:699)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:622)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:580)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:185)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496)
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1007)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:174)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:801)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:699)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:622)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:580)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:185)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496)
at Main.getFile(Main.java:26)
at Main.main(Main.java:20)
Caused by: java.lang.ClassNotFoundException: com.google.auth.Credentials
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:185)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496)
... 20 more

MutumaMiles on 16 Dec 2017

I am stuck with similar issue on firebase-admin vs google-cloud-logging-logback. God knows which dependencies are screwing up. Only one of them working at a time. Why Google has messed up so much with the Java libraries ??