looks like 1.8.2 is not available in maven central about appengine-maven-plugin HOT 12 CLOSED

more confirmation
http://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22com.google.appengine%22%20AND
%20a%3A%22appengine-maven-plugin%22

Hey Matt,

First of all, nice work on the maven plugin! I've been using it for the past 
couple months and it rocks!

With respect to this issue, I don't think it's fixed. I do see version 1.8.2 of 
appengine-maven-plugin in maven central. But for some reason that has not fixed 
the issue. Using versions 1.8.1 and earlier work fine. I created a maven app 
engine project from scratch using 
"com.google.appengine.archetypes:guestbook-archetype" and changed the version 
to 1.8.2 and had the same issue. I also tried to see if for some reason the 
uploaded pom files for the plugin were incorrect since the error is "Failed to 
read artifact descriptor", but the changes seem straightforward for 1.8.2. 
Maybe you can take another look?

$ mvn appengine:devserver
[INFO] Scanning for projects...
[WARNING] The POM for com.google.appengine:appengine-maven-plugin:jar:1.8.2 is 
missing, no dependency information available
[WARNING] Failed to retrieve plugin descriptor for 
com.google.appengine:appengine-maven-plugin:1.8.2: Plugin 
com.google.appengine:appengine-maven-plugin:1.8.2 or one of its dependencies 
could not be resolved: Failed to read artifact descriptor for 
com.google.appengine:appengine-maven-plugin:jar:1.8.2
Downloading: 
http://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml
Downloading: 
http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml
Downloaded: 
http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml 
(12 KB at 63.9 KB/sec)
Downloaded: 
http://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml (22 KB 
at 120.7 KB/sec)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE

Thanks.

Amir

[deleted comment]

Right. Maven central has 1.8.2. But for some reason there is a "Failed to read 
artifact descriptor for com.google.appengine:appengine-maven-plugin:jar:1.8.2" 
error being returned. I'm guessing some meta-data for 1.8.2 (only) on maven 
central is incorrect. But I'm not sure exactly what the issue is.

Some more info in case it's helpful.

Link to guest-book archetype app w/ version 1.8.2:
https://www.dropbox.com/sh/tzx7qg4iegyevyj/obYizwOXZh

$ mvn -version
Apache Maven 3.0.4
Maven home: /usr/share/maven
Java version: 1.7.0_25, vendor: Oracle Corporation
Java home: /usr/lib/jvm/java-7-openjdk-amd64/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "3.5.0-37-generic", arch: "amd64", family: "unix"

$ mvn -X appengine:devserver
Apache Maven 3.0.4
Maven home: /usr/share/maven
Java version: 1.7.0_25, vendor: Oracle Corporation
Java home: /usr/lib/jvm/java-7-openjdk-amd64/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "3.5.0-37-generic", arch: "amd64", family: "unix"
[INFO] Error stacktraces are turned on.
[DEBUG] Reading global settings from /usr/share/maven/conf/settings.xml
[DEBUG] Reading user settings from /home/avaliani/.m2/settings.xml
[DEBUG] Using local repository at /home/avaliani/.m2/repository
[DEBUG] Using manager EnhancedLocalRepositoryManager with priority 10 for 
/home/avaliani/.m2/repository
[INFO] Scanning for projects...
[DEBUG] Extension realms for project myapp:myapp:war:1.0-SNAPSHOT: (none)
[DEBUG] Looking up lifecyle mappings for packaging war from 
ClassRealm[plexus.core, parent: null]
[DEBUG] Resolving plugin prefix appengine from [org.apache.maven.plugins, 
org.codehaus.mojo]
[WARNING] The POM for com.google.appengine:appengine-maven-plugin:jar:1.8.2 is 
missing, no dependency information available
[WARNING] Failed to retrieve plugin descriptor for 
com.google.appengine:appengine-maven-plugin:1.8.2: Plugin 
com.google.appengine:appengine-maven-plugin:1.8.2 or one of its dependencies 
could not be resolved: Failed to read artifact descriptor for 
com.google.appengine:appengine-maven-plugin:jar:1.8.2
org.apache.maven.plugin.PluginResolutionException: Plugin 
com.google.appengine:appengine-maven-plugin:1.8.2 or one of its dependencies 
could not be resolved: Failed to read artifact descriptor for 
com.google.appengine:appengine-maven-plugin:jar:1.8.2
    at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:129)
    at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getPluginDescriptor(DefaultMavenPluginManager.java:142)
    at org.apache.maven.plugin.DefaultBuildPluginManager.loadPlugin(DefaultBuildPluginManager.java:59)
    at org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.resolveFromProject(DefaultPluginPrefixResolver.java:139)
    at org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.resolveFromProject(DefaultPluginPrefixResolver.java:122)
    at org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.resolve(DefaultPluginPrefixResolver.java:86)
    at org.apache.maven.lifecycle.internal.MojoDescriptorCreator.findPluginForPrefix(MojoDescriptorCreator.java:262)
    at org.apache.maven.lifecycle.internal.MojoDescriptorCreator.getMojoDescriptor(MojoDescriptorCreator.java:222)
    at org.apache.maven.lifecycle.internal.DefaultLifecycleTaskSegmentCalculator.calculateTaskSegments(DefaultLifecycleTaskSegmentCalculator.java:106)
    at org.apache.maven.lifecycle.internal.DefaultLifecycleTaskSegmentCalculator.calculateTaskSegments(DefaultLifecycleTaskSegmentCalculator.java:86)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:98)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.sonatype.aether.resolution.ArtifactDescriptorException: Failed 
to read artifact descriptor for 
com.google.appengine:appengine-maven-plugin:jar:1.8.2
    at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:296)
    at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor(DefaultArtifactDescriptorReader.java:186)
    at org.sonatype.aether.impl.internal.DefaultRepositorySystem.readArtifactDescriptor(DefaultRepositorySystem.java:279)
    at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:115)
    ... 23 more
Caused by: org.sonatype.aether.resolution.ArtifactResolutionException: Failure 
to find com.google.appengine:appengine-maven-plugin:pom:1.8.2 in 
http://repo.maven.apache.org/maven2 was cached in the local repository, 
resolution will not be reattempted until the update interval of central has 
elapsed or updates are forced
    at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:538)
    at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:216)
    at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:193)
    at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:281)
    ... 26 more
Caused by: org.sonatype.aether.transfer.ArtifactNotFoundException: Failure to 
find com.google.appengine:appengine-maven-plugin:pom:1.8.2 in 
http://repo.maven.apache.org/maven2 was cached in the local repository, 
resolution will not be reattempted until the update interval of central has 
elapsed or updates are forced
    at org.sonatype.aether.impl.internal.DefaultUpdateCheckManager.newException(DefaultUpdateCheckManager.java:230)
    at org.sonatype.aether.impl.internal.DefaultUpdateCheckManager.checkArtifact(DefaultUpdateCheckManager.java:204)
    at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:427)
    ... 29 more
[DEBUG] Could not find metadata org.apache.maven.plugins/maven-metadata.xml in 
local (/home/avaliani/.m2/repository)
[DEBUG] Skipped remote update check for 
org.apache.maven.plugins/maven-metadata.xml, locally cached metadata up-to-date.
[DEBUG] Could not find metadata org.codehaus.mojo/maven-metadata.xml in local 
(/home/avaliani/.m2/repository)
[DEBUG] Skipped remote update check for org.codehaus.mojo/maven-metadata.xml, 
locally cached metadata up-to-date.
[DEBUG] Could not find metadata org.apache.maven.plugins/maven-metadata.xml in 
local (/home/avaliani/.m2/repository)
[DEBUG] Could not find metadata org.codehaus.mojo/maven-metadata.xml in local 
(/home/avaliani/.m2/repository)
[DEBUG] Using connector WagonRepositoryConnector with priority 0 for 
http://repo.maven.apache.org/maven2
[DEBUG] Using connector WagonRepositoryConnector with priority 0 for 
http://repo.maven.apache.org/maven2
Downloading: 
http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml
Downloading: 
http://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml
Downloaded: 
http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml 
(12 KB at 52.2 KB/sec)
[DEBUG] Writing resolution tracking file 
/home/avaliani/.m2/repository/org/apache/maven/plugins/resolver-status.propertie
s
Downloaded: 
http://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml (22 KB 
at 97.3 KB/sec)
[DEBUG] Writing resolution tracking file 
/home/avaliani/.m2/repository/org/codehaus/mojo/resolver-status.properties
[INFO] ------------------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.856s
[INFO] Finished at: Thu Aug 01 15:10:05 PDT 2013
[INFO] Final Memory: 12M/212M
[INFO] ------------------------------------------------------------------------
...

Hi, I am having similar issue with trying the tutorial - 
https://developers.google.com/appengine/docs/java/tools/maven

I was able to get it done without error the first time. But after a few days I 
am getting the following error

[ERROR] No plugin found for prefix 'appengine' in the current project and in 
the plugin groups [org.apache.maven.plugins, o
 available from the repositories [local (C:\Users\john\.m2\repository), central (http://repo.maven.apache.org/maven2)] -> [
org.apache.maven.plugin.prefix.NoPluginFoundForPrefixException: No plugin found 
for prefix 'appengine' in the current proje
gin groups [org.apache.maven.plugins, org.codehaus.mojo] available from the 
repositories [local (C:\Users\john\.m2\reposito
p://repo.maven.apache.org/maven2)]
        at org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.resolve(DefaultPluginPrefixResolver.java:93)
        at org.apache.maven.lifecycle.internal.MojoDescriptorCreator.findPluginForPrefix(MojoDescriptorCreator.java:260)
        at org.apache.maven.lifecycle.internal.MojoDescriptorCreator.getMojoDescriptor(MojoDescriptorCreator.java:220)
        at org.apache.maven.lifecycle.internal.DefaultLifecycleTaskSegmentCalculator.calculateTaskSegments(DefaultLifecycle
ator.java:106)
        at org.apache.maven.lifecycle.internal.DefaultLifecycleTaskSegmentCalculator.calculateTaskSegments(DefaultLifecycle
ator.java:86)
        at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:98)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:317)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:152)
        at org.apache.maven.cli.MavenCli.execute(MavenCli.java:555)
        at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:214)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:158)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
        at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
        at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
        at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
[ERROR]
[ERROR]
[ERROR] For more information about the errors and possible solutions, please 
read the following articles:
[ERROR] [Help 1] 
http://cwiki.apache.org/confluence/display/MAVEN/NoPluginFoundForPrefixException

[deleted comment]

Hey i am also facing same issue

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.008s
[INFO] Finished at: Thu Jun 26 19:19:47 IST 2014
[INFO] Final Memory: 9M/111M
[INFO] ------------------------------------------------------------------------
[ERROR] No plugin found for prefix 'appengine' in the current project and in 
the plugin groups [org.apache.maven.plugins, org.codehaus.mojo] available from 
the repositories [local (/home/jitendra/.m2/repository), central 
(http://repo.maven.apache.org/maven2)] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e 
switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please 
read the following articles:
[ERROR] [Help 1] 
http://cwiki.apache.org/confluence/display/MAVEN/NoPluginFoundForPrefixException

please fix it

Hi Everyone,

I am having the same, prefix 'appengine' problem, but only when trying to 
upload the app to the gae servers. In localhost, it works fine. I tried 
different versions (1.8.1, 1.9.7) with same results.
Appreciate your help.

Endre

I am also facing the same issue. Can anyone kindly let me how did you resolve this issue?