cannot parse configuration file error with packaged jar

[mp]

Hello

My first dropwizard application works great in intellij when i run/debug with the appropriate commandline args (server api.yaml), however when I package everything up into a fat jar I get the following error:

user@server:~/api$ java -jar api-jar-with-dependencies.jar server api.yaml

api.yaml has an error:

  * Failed to parse configuration at: server.connector; Could not resolve type id 'http' into a subtype of [simple type, class io.dropwizard.jetty.ConnectorFactory]: known type ids = [ConnectorFactory]

 at [Source: N/A; line: -1, column: -1] (through reference chain: APIConfiguration["server"]->io.dropwizard.server.SimpleServerFactory["connector"])

I suspect it must be a packaging thing... I've packaged up in maven with this:

            <plugin>

                <artifactId>maven-assembly-plugin</artifactId>

                <configuration>

                    <archive>

                        <manifest>

                            <mainClass>uk.co.epicuri.bookingapi.BookingAPIApplication</mainClass>

                        </manifest>

                    </archive>

                    <descriptorRefs>

                        <descriptorRef>jar-with-dependencies</descriptorRef>

                    </descriptorRefs>

                </configuration>

            </plugin>

> mvn clean compile assembly:single

I'm unsure what's actually happening here, can anyone shed any light please? Thanks in advance

[Prajwal Tuladhar]

It's complaining that your YAML config file (sever section) is invalid.

Can you paste your YAML file?

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Cheers,

Praj

[mp]

But it works from an IDE, so i think that's a red herring.

server:

  type: simple

  applicationContextPath: /v1

  adminContextPath: /admin

  connector:

    type: http

    port: 8085

logging:

  # The default level of all loggers. Can be OFF, ERROR, WARN, INFO, DEBUG, TRACE, or ALL.

  level: INFO

[Prajwal Tuladhar]

server config syntax doesn't match with what DW is expecting. Take a look @ https://github.com/dropwizard/dropwizard/blob/v0.8.1/dropwizard-example/example.yml#L27-L52

And as for "working with IDE", if you check, it might not be listening to port 8085, rather defaulting DW application port (8080).

[mp]

It's def working on the ide on 8085

INFO  [2015-05-08 09:37:22,131] org.eclipse.jetty.setuid.SetUIDListener: Opened APIApplication@7a6ebe1e{HTTP/1.1}{0.0.0.0:8085}

According to the link I should be doing

server:

  applicationContextPath: /v1

  adminContextPath: /admin

#  softNofileLimit: 1000

#  hardNofileLimit: 1000

  applicationConnectors:

    - type: http

      port: 8085

Similarly also works in IDE, but not when packaged in a jar.

[mp]

Ok I got it working, though I'm not sure I understand why. It was indeed to do with the maven packaging of the jar, and there are some other posts on StackOverflow that point to the same issue (in gradle)

I changed the plugin to include all resources:

              <plugin>

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-shade-plugin</artifactId>

                <version>1.6</version>

                <configuration>

                    <createDependencyReducedPom>true</createDependencyReducedPom>

                    <filters>

                        <filter>

                            <artifact>*:*</artifact>

                            <excludes>

                                <exclude>META-INF/*.SF</exclude>

                                <exclude>META-INF/*.DSA</exclude>

                                <exclude>META-INF/*.RSA</exclude>

                            </excludes>

                        </filter>

                    </filters>

                </configuration>

                <executions>

                    <execution>

                        <phase>package</phase>

                        <goals>

                            <goal>shade</goal>

                        </goals>

                        <configuration>

                            <transformers>

                                <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>

                                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">

                                    <mainClass>my.application</mainClass>

                                </transformer>

                            </transformers>

                        </configuration>

                    </execution>

                </executions>

            </plugin>

[Artem Prigoda]

It looks like you stepped on this issue #810

The recommended way to build Dropwizard application is through maven-shade-plugin. Check out the "Building Fat Jars" section of Getting Started.
You need to configure maven-assemply-plugin to merge META-INF/services entries in your jar.

Artem

[mp]

Thanks for the Getting Started link, I completely missed the fact that it had a fat jar section. That's indeed how I ended up fixing it.