swagger-ui endpoint not accessible in AWS Lambda

[pateni24]

Describe the bug
Making a http call to /swagger-ui/ , the app fails to serve the swagger-ui files. Local Dev mode works fine.

Expected behavior
Opening /swagger-ui/ should load swagger-ui/index.html page

Actual behavior
ERROR [io.qua.ver.htt.run.QuarkusErrorHandler] (vert.x-eventloop-thread-2) HTTP Request to /swagger-ui/index.html failed, error id: bea62c51-a11f-4cb4-8aba-86217c872b1d-1: io.vertx.core.file.FileSystemException: java.nio.file.NoSuchFileException: META-INF/swagger-ui-files/index.html
at io.vertx.core.file.impl.FileSystemImpl$7.perform(FileSystemImpl.java:625)
at io.vertx.core.file.impl.FileSystemImpl$7.perform(FileSystemImpl.java:613)
at io.vertx.core.file.impl.FileSystemImpl.propsBlocking(FileSystemImpl.java:162)
at io.vertx.ext.web.handler.impl.StaticHandlerImpl.lambda$getFileProps$4(StaticHandlerImpl.java:295)
at io.vertx.ext.web.handler.impl.StaticHandlerImpl.wrapInTCCLSwitch(StaticHandlerImpl.java:266)
at io.vertx.ext.web.handler.impl.StaticHandlerImpl.getFileProps(StaticHandlerImpl.java:295)
at io.vertx.ext.web.handler.impl.StaticHandlerImpl.lambda$sendStatic$1(StaticHandlerImpl.java:208)
at io.vertx.core.impl.ContextImpl.lambda$null$0(ContextImpl.java:330)
at io.vertx.core.impl.ContextImpl.executeTask(ContextImpl.java:369)
at io.vertx.core.impl.EventLoopContext.lambda$executeAsync$0(EventLoopContext.java:38)
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164)
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:500)
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.nio.file.NoSuchFileException: META-INF/swagger-ui-files/index.html
at sun.nio.fs.UnixException.translateToIOException(UnixException.java:86)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
at sun.nio.fs.UnixFileAttributeViews$Basic.readAttributes(UnixFileAttributeViews.java:55)
at sun.nio.fs.UnixFileSystemProvider.readAttributes(UnixFileSystemProvider.java:144)
at sun.nio.fs.LinuxFileSystemProvider.readAttributes(LinuxFileSystemProvider.java:99)
at java.nio.file.Files.readAttributes(Files.java:1737)
at io.vertx.core.file.impl.FileSystemImpl$7.perform(FileSystemImpl.java:619)

To Reproduce
Steps to reproduce the behavior:

1. Create a sample Quarkus project with Quarkus 1.3.0.final
2. Maven Dependencies - quarkus-resteasy, resteasy-jackson, quarkus-smallrye-openapi and quarkus-amazon-lambda-http
3. SAM template - Lambda to API gateway proxy integration
4. Set quarkus.swagger-ui.always-include=true in application.properities
5. Deploy the app to lambda
   6.) Try to accessing /swagger-ui/ endpoint

Configuration

# Add your application.properties here, if applicable.
quarkus.swagger-ui.always-include=true

Screenshots
(If applicable, add screenshots to help explain your problem.)

Environment (please complete the following information):

• Output of uname -a or ver:
• Output of java -version: java8
• GraalVM version (if different from Java):
• Quarkus version or git rev: 1.3.0.Final
• Build tool (ie. output of mvnw --version or gradlew --version): maven 3.6.2+

Additional context
(Add any other context about the problem here.)

[quarkusbot]

/cc @patriot1burke

[geoand]

Hi,

does the same happen with a non lambda application?

[pateni24]

Hi,

does the same happen with a non lambda application?

Haven't tired deploying to any actual server. But looks like lambda-http extension is somehow blocking /openapi endpoint which is being called in SwaggerBundleUI in index.html. If quarkus generates the openapi.json file in root folder during the build phase, can it just use specs instead of url ?

[patriot1burke]

I think this is a matter that the root path is /api. Is there a way to change swagger to look at a different root path? I'll have time to look at this next week.

[pateni24]

I think this is a matter that the root path is /api. Is there a way to change swagger to look at a different root path? I'll have time to look at this next week.

Hello @patriot1burke , Just checking to see if you got a chance to look into this ? Thank you!