Question

Since version 1.7.4. of Google App Engine the official appengine-maven-plugin is released by Google.
It has a task appengine:devserver to start the local development server.

This plugin seems not to have any Maven configuration options.

I wonder how I can
a) provider jvm flags
b) to disable new version check (when working offline)

Note that until now I was using the unofficial net.kindleit maven-gae-plugin like:

<plugin>
    <groupId>net.kindleit</groupId>
    <artifactId>maven-gae-plugin</artifactId>
    <version>0.9.4</version>
    <configuration>
        <disableUpdateCheck>true</disableUpdateCheck>
        <javaAgent>${env.REBEL_HOME}/jrebel.jar</javaAgent>
        <jvmFlags>
            <jvmFlag>-noverify</jvmFlag>
            <jvmFlag>-Ddatastore.backing_store=${project.basedir}/local_db.bin</jvmFlag>
            <jvmFlag>-Ddatastore.default_high_rep_job_policy_unapplied_job_pct=20</jvmFlag>
            <jvmFlag>-Drebel.spring_data_plugin=true</jvmFlag>
        </jvmFlags>
        <wait>true</wait>
    </configuration>
    <dependencies>
        <dependency>
            <groupId>com.google.appengine</groupId>
            <artifactId>appengine-tools-sdk</artifactId>
            <version>${com.google.appengine.version}</version>
        </dependency>
        <dependency>
            <groupId>com.google.appengine</groupId>
            <artifactId>appengine-api-1.0-sdk</artifactId>
            <version>${com.google.appengine.version}</version>
        </dependency>
    </dependencies>
</plugin>

Answer 1

Having exactly that issue myself. Checking the actual sources for the plugin, the DevAppServerRunner has zero support for passing extra arguments of any kind to the dev server. It looks like the best way to do it at the moment is to use the unofficial plugin.

source for DevAppServerRunner.java