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dherault / serverless-offline

Emulate AWS λ and API Gateway locally when developing your Serverless project
MIT License
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serverless offline doesn't work for java lambda #1665

Closed MatthiasBoehm87 closed 1 year ago

MatthiasBoehm87 commented 1 year ago

Edit: This problem occurs only on Windows, not on Linux.

I have a lambda function implemented in Java (see the attached zip file that contains it: helloworldJava.zip).

When opening the serverless offline URL for that function in the browser, serverless offline prints a Java exception:

> serverless offline
(node:39172) NOTE: We are formalizing our plans to enter AWS SDK for JavaScript (v2) into maintenance mode in 2023.

Please migrate your code to use AWS SDK for JavaScript (v3).
For more information, check the migration guide at https://a.co/7PzMCcy
(Use `node --trace-warnings ...` to show where the warning was created)
offline: serverless-offline requires serverless version ^1.60.0 || 2 but found version 3.27.0.
         Be aware that functionality might be limited or contains bugs.
         To avoid any issues update serverless to a later version.

offline: Starting Offline: dev/us-east-1.
offline: Offline [http for lambda] listening on http://localhost:3002
offline: Function names exposed for local invocation by aws-sdk:
           * hello: helloworldjava-dev-hello

   ┌─────────────────────────────────────────────────────────────────────────┐
   │                                                                         │
   │   GET | http://localhost:3000/dev/hello                                 │
   │   POST | http://localhost:3000/2015-03-31/functions/hello/invocations   │
   │                                                                         │
   └─────────────────────────────────────────────────────────────────────────┘

offline: [HTTP] server ready: http://localhost:3000 🚀
offline:
offline: Enter "rp" to replay the last request

offline: GET /dev/hello (λ: hello)
Local java server not running. For faster local invocations, run "java-invoke-local --server" in your project directory
java.lang.NoClassDefFoundError: Could not initialize class org.codehaus.groovy.vmplugin.v7.Java7
        at org.codehaus.groovy.vmplugin.VMPluginFactory.<clinit>(VMPluginFactory.java:43)
        at org.codehaus.groovy.reflection.GroovyClassValueFactory.<clinit>(GroovyClassValueFactory.java:35)
        at org.codehaus.groovy.reflection.ClassInfo.<clinit>(ClassInfo.java:107)
        at org.codehaus.groovy.reflection.ReflectionCache.getCachedClass(ReflectionCache.java:95)
        at org.codehaus.groovy.reflection.ReflectionCache.<clinit>(ReflectionCache.java:39)
        at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.registerMethods(MetaClassRegistryImpl.java:210)
        at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.<init>(MetaClassRegistryImpl.java:108)
        at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.<init>(MetaClassRegistryImpl.java:86)
        at groovy.lang.GroovySystem.<clinit>(GroovySystem.java:36)
        at org.codehaus.groovy.runtime.InvokerHelper.<clinit>(InvokerHelper.java:86)
        at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodN(ScriptBytecodeAdapter.java:180)
        at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.isCase(ScriptBytecodeAdapter.java:679)
        at serverless.jvm.plugin.MainCli.main(MainCli.groovy:38)
Exception in thread "main" java.lang.NoClassDefFoundError: Could not initialize class org.codehaus.groovy.reflection.ReflectionCache
        at org.codehaus.groovy.runtime.dgmimpl.NumberNumberMetaMethod.<clinit>(NumberNumberMetaMethod.java:33)
        at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:64)
        at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
        at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
        at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.createMetaMethodFromClass(MetaClassRegistryImpl.java:258)
        at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.<init>(MetaClassRegistryImpl.java:111)
        at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.<init>(MetaClassRegistryImpl.java:86)
        at groovy.lang.GroovySystem.<clinit>(GroovySystem.java:36)
        at org.codehaus.groovy.runtime.InvokerHelper.<clinit>(InvokerHelper.java:86)
        at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodN(ScriptBytecodeAdapter.java:180)
        at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.isCase(ScriptBytecodeAdapter.java:679)
        at serverless.jvm.plugin.MainCli.main(MainCli.groovy:38)

offline: (λ: hello) RequestId: cleqv5cu7000384ui3u0r5mjl  Duration: 327.24 ms  Billed Duration: 328 ms

The HTTP error code displayed in the browser is 502.

Reproducible as follows:

Create a new java lambda project with the following serverless command:

serverless create --template "aws-java-maven"

Then modify the serverless.yml template. Add

plugins:
  - serverless-offline

and add an API gateway path to the "hello" function:

functions:
  hello:
    handler: com.serverless.Handler
    events:
      - http:
          path: hello
          method: GET

Run mvn package to build the jar file.

Now when you call "serverless offline", and open the URL "http://localhost:3000/dev/hello" in the browser, you get the following output:

(node:39172) NOTE: We are formalizing our plans to enter AWS SDK for JavaScript (v2) into maintenance mode in 2023.

Please migrate your code to use AWS SDK for JavaScript (v3).
For more information, check the migration guide at https://a.co/7PzMCcy
(Use `node --trace-warnings ...` to show where the warning was created)
offline: serverless-offline requires serverless version ^1.60.0 || 2 but found version 3.27.0.
         Be aware that functionality might be limited or contains bugs.
         To avoid any issues update serverless to a later version.

offline: Starting Offline: dev/us-east-1.
offline: Offline [http for lambda] listening on http://localhost:3002
offline: Function names exposed for local invocation by aws-sdk:
           * hello: helloworldjava-dev-hello

   ┌─────────────────────────────────────────────────────────────────────────┐
   │                                                                         │
   │   GET | http://localhost:3000/dev/hello                                 │
   │   POST | http://localhost:3000/2015-03-31/functions/hello/invocations   │
   │                                                                         │
   └─────────────────────────────────────────────────────────────────────────┘

offline: [HTTP] server ready: http://localhost:3000 🚀
offline:
offline: Enter "rp" to replay the last request

offline: GET /dev/hello (λ: hello)
Local java server not running. For faster local invocations, run "java-invoke-local --server" in your project directory
java.lang.NoClassDefFoundError: Could not initialize class org.codehaus.groovy.vmplugin.v7.Java7
        at org.codehaus.groovy.vmplugin.VMPluginFactory.<clinit>(VMPluginFactory.java:43)
        at org.codehaus.groovy.reflection.GroovyClassValueFactory.<clinit>(GroovyClassValueFactory.java:35)
        at org.codehaus.groovy.reflection.ClassInfo.<clinit>(ClassInfo.java:107)
        at org.codehaus.groovy.reflection.ReflectionCache.getCachedClass(ReflectionCache.java:95)
        at org.codehaus.groovy.reflection.ReflectionCache.<clinit>(ReflectionCache.java:39)
        at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.registerMethods(MetaClassRegistryImpl.java:210)
        at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.<init>(MetaClassRegistryImpl.java:108)
        at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.<init>(MetaClassRegistryImpl.java:86)
        at groovy.lang.GroovySystem.<clinit>(GroovySystem.java:36)
        at org.codehaus.groovy.runtime.InvokerHelper.<clinit>(InvokerHelper.java:86)
        at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodN(ScriptBytecodeAdapter.java:180)
        at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.isCase(ScriptBytecodeAdapter.java:679)
        at serverless.jvm.plugin.MainCli.main(MainCli.groovy:38)
Exception in thread "main" java.lang.NoClassDefFoundError: Could not initialize class org.codehaus.groovy.reflection.ReflectionCache
        at org.codehaus.groovy.runtime.dgmimpl.NumberNumberMetaMethod.<clinit>(NumberNumberMetaMethod.java:33)
        at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:64)
        at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
        at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
        at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.createMetaMethodFromClass(MetaClassRegistryImpl.java:258)
        at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.<init>(MetaClassRegistryImpl.java:111)
        at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.<init>(MetaClassRegistryImpl.java:86)
        at groovy.lang.GroovySystem.<clinit>(GroovySystem.java:36)
        at org.codehaus.groovy.runtime.InvokerHelper.<clinit>(InvokerHelper.java:86)
        at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodN(ScriptBytecodeAdapter.java:180)
        at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.isCase(ScriptBytecodeAdapter.java:679)
        at serverless.jvm.plugin.MainCli.main(MainCli.groovy:38)

offline: (λ: hello) RequestId: cleqv5cu7000384ui3u0r5mjl  Duration: 327.24 ms  Billed Duration: 328 ms

The lambda function itself isn't executed. This is reproducible with the current serverless and serverless offline versions:

> serverless --version
Framework Core: 3.28.0
Plugin: 6.2.3
SDK: 4.3.2

Version of serverless offline: 12.0.4 I've added the whole java project for reference. helloworldJava.zip

MatthiasBoehm87 commented 1 year ago

I solved the problem myself: The cause for that behaviour was that I had AdoptOpenJDK 15 on the PATH. Removing this entry from the PATH list solved the problem.