maven deploy + nexus failed on bad request - maven

I am experiencing some problems with my build process.
the build is finishing fine and Jenkins starts to upload files to nexus. everything works well, but then it fails for some reason, the weirdest part is that the file that is mentioned to not be uploaded is actually uploaded and i can find it in nexus.
here is the output:
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO]
[INFO] pn-parent
[INFO] pn-domain
[INFO] pn-infra
[INFO] pn-config
[INFO] datalink-repository
[INFO] pn-service
[INFO] pn-backend
[INFO]
[INFO] Using the builder org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder with a thread count of 1
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building pn-parent 0.0.707
[INFO] ------------------------------------------------------------------------
[WARNING] The artifact junit:junit-dep:pom:4.11 has been relocated to junit:junit:pom:4.11
[INFO]
[INFO] --- maven-jar-plugin:2.5:jar (default-cli) # pn-parent ---
[WARNING] JAR will be empty - no content was marked for inclusion!
[INFO] Building jar: /var/lib/jenkins/jobs/webapps-server-side-release/workspace/pn-parent/target/pn-parent-0.0.707.jar
[INFO]
[INFO] --- maven-deploy-plugin:2.7:deploy (default-cli) # pn-parent ---
Uploading: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/pn-parent/0.0.707/pn-parent-0.0.707.pom
Uploaded: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/pn-parent/0.0.707/pn-parent-0.0.707.pom (15 KB at 111.6 KB/sec)
Downloading: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/pn-parent/maven-metadata.xml
Downloaded: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/pn-parent/maven-metadata.xml (21 KB at 1036.9 KB/sec)
Uploading: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/pn-parent/maven-metadata.xml
Uploaded: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/pn-parent/maven-metadata.xml (21 KB at 864.7 KB/sec)
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building pn-domain 0.0.707
[INFO] ------------------------------------------------------------------------
[WARNING] The artifact junit:junit-dep:pom:4.11 has been relocated to junit:junit:pom:4.11
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-cli) # pn-domain ---
[INFO]
[INFO] --- maven-deploy-plugin:2.7:deploy (default-cli) # pn-domain ---
Uploading: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/pn-domain/0.0.707/pn-domain-0.0.707.jar
Uploaded: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/datalink-repository/0.0.707/datalink-repository-0.0.707.jar (624 KB at 7606.1 KB/sec)
Uploading: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/datalink-repository/0.0.707/datalink-repository-0.0.707.pom
2/4 KB
4/4 KB
Uploaded: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/datalink-repository/0.0.707/datalink-repository-0.0.707.pom (4 KB at 93.0 KB/sec)
Downloading: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/datalink-repository/maven-metadata.xml
Downloaded: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/datalink-repository/maven-metadata.xml (21 KB at 1382.8 KB/sec)
Uploading: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/datalink-repository/maven-metadata.xml
Uploaded: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/datalink-repository/maven-metadata.xml (21 KB at 1037.8 KB/sec)
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building pn-service 0.0.707
[INFO] ------------------------------------------------------------------------
[WARNING] The artifact junit:junit-dep:pom:4.11 has been relocated to junit:junit:pom:4.11
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-cli) # pn-service ---
[INFO]
[INFO] --- maven-deploy-plugin:2.7:deploy (default-cli) # pn-service ---
Uploading: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/pn-service/0.0.707/pn-service-0.0.707.jar
Uploaded: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/pn/pn-backend/0.0.707/pn-backend-0.0.707.war (1247 KB at 19480.3 KB/sec)
Uploading: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/pn/pn-backend/0.0.707/pn-backend-0.0.707.pom
Uploaded: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/pn/pn-backend/0.0.707/pn-backend-0.0.707.pom (11 KB at 376.2 KB/sec)
Downloading: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/pn/pn-backend/maven-metadata.xml
Downloaded: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/pn/pn-backend/maven-metadata.xml (21 KB at 1213.1 KB/sec)
Uploading: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/pn/pn-backend/maven-metadata.xml
Uploaded: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/pn/pn-backend/maven-metadata.xml (21 KB at 1031.7 KB/sec)
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] pn-parent ................................... SUCCESS [ 1.081 s]
[INFO] pn-domain ................................... SUCCESS [ 0.696 s]
[INFO] pn-infra .................................... SUCCESS [ 0.295 s]
[INFO] pn-config ................................... SUCCESS [ 0.275 s]
[INFO] datalink-repository ............................... SUCCESS [ 0.390 s]
[INFO] pn-service .................................. SUCCESS [ 0.475 s]
[INFO] pn-backend .................................. SUCCESS [ 1.043 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 6.234 s
[INFO] Finished at: 2014-07-17T14:31:30+00:00
[INFO] Final Memory: 19M/206M
[INFO] ------------------------------------------------------------------------
[WARNING] The requested profile "release" could not be activated because it does not exist.
using global settings config with name mycompany-global-dev-maven-settings
[workspace] $ /var/lib/jenkins/tools/hudson.tasks.Maven_MavenInstallation/Maven-3.1.1/bin/mvn -gs /tmp/global-settings8833627416958413984.xml deploy:deploy-file -Durl=http://maven.mycompany.com:8081/nexus/content/repositories/releases/ -DrepositoryId=mycompany.repository -DpomFile=pn-parent/Backend/pom.xml -Dfile=pn-parent/Backend/target/pn-backend.war
[WARNING]
[WARNING] Some problems were encountered while building the effective settings
[WARNING] 'usePluginRegistry' is deprecated and has no effect. # /var/lib/jenkins/.m2/settings.xml
[WARNING]
[INFO] Scanning for projects...
[INFO]
[INFO] Using the builder org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder with a thread count of 1
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Maven Stub Project (No POM) 1
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-deploy-plugin:2.7:deploy-file (default-cli) # standalone-pom ---
Uploading: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/pn/pn-backend/0.0.707/pn-backend-0.0.707.war
...
Uploading: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/pn/pn-backend/0.0.707/pn-backend-0.0.707.pom
2/11 KB
4/11 KB
6/11 KB
8/11 KB
10/11 KB
11/11 KB
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.928 s
[INFO] Finished at: 2014-07-17T14:31:33+00:00
[INFO] Final Memory: 6M/142M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy-file (default-cli) on project standalone-pom: Failed to deploy artifacts: Could not transfer artifact com.mycompany.pn:pn-backend:war:0.0.707 from/to mycompany.repository (http://maven.mycompany.com:8081/nexus/content/repositories/releases/): Failed to transfer file: http://maven.mycompany.com:8081/nexus/content/repositories/releases/com/mycompany/pn/pn-backend/0.0.707/pn-backend-0.0.707.war. Return code is: 400, ReasonPhrase: Bad Request. -> [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/MojoExecutionException
Build step 'Conditional steps (multiple)' marked build as failure
[locks-and-latches] Releasing all the locks
[locks-and-latches] All the locks released
[Current build status] check if current [FAILURE] is worse or equals then [SUCCESS] and better or equals then [SUCCESS]
Run condition [Current build status] preventing perform for step [Record JaCoCo coverage report]
Description set:
Start to submit Nexus scheduled tasks.
Submitting... [id: 36, name: release-build, type: Rebuild Maven Metadata Files]
End to submit Nexus scheduled tasks successfully.
Notifying upstream projects of job completion
Finished: FAILURE

A colleague of mine just ran into the same problem with maven attempting to upload artifacts twice.
We found some help in the forums, links included below.
Bae's answer did the trick for us:
Try running mvn -Prelease-profile help:effective-pom. You will find
that you have two execution sections for maven-source-plugin
[...]
To fix this problem, find everywhere you have used
maven-sources-plugin and make sure that you use the "id"
attach-sources so that it is the same as the release profile. Then
these sections will be merged. Best practice says that to get
consistency you need to configure this in the root pom of your project
in build > pluginManagement and NOT in your child poms. In the child
pom you just specify in build > plugins that you want to use
maven-source-plugin but you provide no executions.
Nexus accepts upload but says it failed and Maven release plugin fails : source artifacts getting deployed twice

snapshot and release confliction also results in 400 bad request. The project you are trying to update may be a snapshot like this in pom:
<version>0.0.1-SNAPSHOT</version>
while the repository in settings.xml rejects snapshot. solution:
<version>0.0.1</version>
This also happens the other way round: trying to deploy a release (version has no snapshot) version to a snapshot repository.

I also came across this problem. In my case I'd configured the Nexus repository policy to accept release artefacts but I was actually pushing a snapshot artefact to the repo. Since I wanted a snapshot repo I simply changed the policy and all was well.

This happened to me as well. In my case, I was deploying a release version. To fix, make sure the version number doesn't exist in Nexus yet. If it's a multi-module project, check the sub-modules' versions as well.

Related

How to ask maven-assembly-plugin to skip (ignore) missing resources and not to stop build?

I am trying to build Metasfresh ERP backend (server-side) suite https://github.com/metasfresh/metasfresh/tree/master/backend and my maven build stops at the project https://github.com/metasfresh/metasfresh/tree/master/backend/de.metas.adempiere.adempiere/migration because of missing resrouces required by the maven-assembly-plugin.
Specifically, the maven log says:
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) # de.metas.adempiere.adempiere.migration-sql ---
[INFO] Building jar: C:\Workspace-Brugere\metasfresh\backend\de.metas.adempiere.adempiere\migration\target\de.metas.adempiere.adempiere.migration-sql-10.0.0.jar
[INFO]
[INFO] --- maven-assembly-plugin:3.0.0:single (make-postgresql-assembly) # de.metas.adempiere.adempiere.migration-sql ---
Downloading: https://repository.apache.org/snapshots/de/metas/metasfresh-assemblies/maven-metadata.xml
Downloading: https://repo.metasfresh.com/repository/mvn-master/de/metas/metasfresh-assemblies/maven-metadata.xml
Downloaded: https://repo.metasfresh.com/repository/mvn-master/de/metas/metasfresh-assemblies/maven-metadata.xml (8.7 kB at 5.5 kB/s)
Downloading: https://repo.metasfresh.com/repository/mvn-master/de/metas/de.metas.parent.general/5.159.1-21669+master/de.metas.parent.general-5.159.1-21669+master.pom
Downloading: https://repo.metasfresh.com/repository/mvn-master/de/metas/de.metas.parent.general/5.159.1-21672+master/de.metas.parent.general-5.159.1-21672+master.pom
Downloading: https://repo.metasfresh.com/repository/mvn-master/de/metas/de.metas.parent.general/5.159.1-21673+master/de.metas.parent.general-5.159.1-21673+master.pom
...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] de.metas.parent .................................... SUCCESS [ 2.944 s]
...
[INFO] de.metas.monitoring ................................ SUCCESS [ 10.034 s]
[INFO] de.metas.adempiere.adempiere.patched-ecs ........... SUCCESS [ 13.617 s]
[INFO] de.metas.adempiere.adempiere.migration-sql ......... FAILURE [ 36.118 s]
[INFO] metasfresh-report .................................. SKIPPED
...
[INFO] metasfresh-dist-dist ............................... SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 04:36 min
[INFO] Finished at: 2020-12-25T19:01:04+02:00
[INFO] Final Memory: 146M/1207M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-assembly-plugin:3.0.0:single (make-postgresql-assembly)
on project de.metas.adempiere.adempiere.migration-sql:
Execution make-postgresql-assembly of goal org.apache.maven.plugins:maven-assembly-plugin:3.0.0:single failed:
Plugin org.apache.maven.plugins:maven-assembly-plugin:3.0.0 or one of its dependencies could not be resolved:
Failed to collect dependencies at org.apache.maven.plugins:maven-assembly-plugin:jar:3.0.0 ->
de.metas:metasfresh-assemblies:jar:5.159.1-21669+master:
Failed to read artifact descriptor for de.metas:metasfresh-assemblies:jar:5.159.1-21669+master:
Could not find artifact de.metas:de.metas.parent.general:pom:5.159.1-21669+master in metasfresh-repo
(https://repo.metasfresh.com/repository/mvn-master/) -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
I checked and the maven-assembly-plugin reads resources from the
https://repo.metasfresh.com/repository/mvn-master/de/metas/metasfresh-assemblies/maven-metadata.xml
and it have entry for 5.1159.1-21669+master:
<version>5.159.1-21667+master</version>
<version>5.159.1-21668+master</version>
<version>5.159.1-21669+master</version>
<version>5.159.1-21670+master</version>
<version>5.159.1-21671+master</version>
<version>5.159.1-21672+master</version>
<version>5.159.1-21673+master</version>
<version>5.159.1-21674+master</version>
but there is no entry at link https://repo.metasfresh.com/repository/mvn-master/de/metas/de.metas.parent.general/5.159.1-21669+master/de.metas.parent.general-5.159.1-21669+master.pom
So - this is very strange thing with this project. Maybe there are some administrative/commercial/organizational issues in this open source project and they are keeping forbidden some necessary files intentionally.
My question is - how can I ask maven plugins to skip missing resources? And just see what is happening?
Maybe I can download maven-metadata.xml, remove the entries for which there are no versions and then hope that maven-assembly-plugin will use local (handcrafted) mave-metadata.xml?
de.metas:metasfresh-assemblies:jar:5.159.1-21669+master's POM contains:
...
<parent>
<groupId>de.metas</groupId>
<artifactId>de.metas.parent.general</artifactId>
<version>5.159.1-21669+master</version>
...
</parent>
...
but, as you found, there is no such artifact.
This is also not a resource (as in src/[main|test]/resources), but a parent POM. You can't "skip" parent POMs, i.e. you can't build child POMs if the parent is not available. This is like trying to compile a sub-class if the super-class isn't available in the classpath.

Bintray 409 conflict - mvn release plugin uploading jar twice?

I'm struggling to push releases to Bintray in full.
From what I can tell, the issue seems to be caused by the maven release plugin trying to push the sources jar twice -- hence the HTTP 409 conflict response being returned.
So far I've not been able to locate the cause. Help would be appreciated!
I can see the jars on bintray up to the point that it fails, indicating it doesn't seem to be a credentials issue
Appending ;override=1 to the end of the url seemingly allows the release to succeed (I'm still new at this, so not 100% sure what I should be seeing)
Another collaborator is able to release fine - he's using a slightly older version of maven (downgrading from 3.6 to 3.5 is my next step, but it seems unusual/odd/unlikely?)
mvn test/package/install etc are fine - no concerns there
the version number is a full release number, not a snapshot (e.g. 1.2.3, not 1.2.3-SNAPSHOT)
edit: similar results are found using both Windows and Ubuntu (virtualbox guest)
Here's a snippet of what I believe to be the relevant parts of the mvn output, but can post more if needed.
[INFO] [INFO] --- maven-install-plugin:3.0.0-M1:install (default-install) # YYY-core ---
[INFO] [INFO] Installing /home/XXX/YYY/target/checkout/YYY-core/target/YYY-core-VERSION.jar to /home/XXX/.m2/repository/com/github/YYY/YYY-core/VERSION/YYY-core-VERSION.jar
[INFO] [INFO] Installing /home/XXX/YYY/target/checkout/YYY-core/pom.xml to /home/XXX/.m2/repository/com/github/YYY/YYY-core/VERSION/YYY-core-VERSION.pom
[INFO] [INFO] Installing /home/XXX/YYY/target/checkout/YYY-core/target/YYY-core-VERSION-sources.jar to /home/XXX/.m2/repository/com/github/YYY/YYY-core/VERSION/YYY-core-VERSION-sources.jar
[INFO] [INFO] Installing /home/XXX/YYY/target/checkout/YYY-core/target/YYY-core-VERSION-sources.jar to /home/XXX/.m2/repository/com/github/YYY/YYY-core/VERSION/YYY-core-VERSION-sources.jar
[INFO] [INFO] Installing /home/XXX/YYY/target/checkout/YYY-core/target/YYY-core-VERSION-javadoc.jar to /home/XXX/.m2/repository/com/github/YYY/YYY-core/VERSION/YYY-core-VERSION-javadoc.jar
[INFO] [INFO]
[INFO] [INFO] --- maven-deploy-plugin:3.0.0-M1:deploy (default-deploy) # YYY-core ---
[INFO] [INFO] Uploading to bintray-YYY-ZZZ: https://api.bintray.com/maven/YYY/ZZZ/YYY/;publish=1/com/github/YYY/YYY-core/VERSION/YYY-core-VERSION.jar
[INFO] [INFO] Uploaded to bintray-YYY-ZZZ: https://api.bintray.com/maven/YYY/ZZZ/YYY/;publish=1/com/github/YYY/YYY-core/VERSION/YYY-core-VERSION.jar (1.2 MB at 112 kB/s)
[INFO] [INFO] Uploading to bintray-YYY-ZZZ: https://api.bintray.com/maven/YYY/ZZZ/YYY/;publish=1/com/github/YYY/YYY-core/VERSION/YYY-core-VERSION.pom
[INFO] [INFO] Uploaded to bintray-YYY-ZZZ: https://api.bintray.com/maven/YYY/ZZZ/YYY/;publish=1/com/github/YYY/YYY-core/VERSION/YYY-core-VERSION.pom (4.9 kB at 824 B/s)
[INFO] [INFO] Uploading to bintray-YYY-ZZZ: https://api.bintray.com/maven/YYY/ZZZ/YYY/;publish=1/com/github/YYY/YYY-core/VERSION/YYY-core-VERSION-sources.jar
[INFO] [INFO] Uploaded to bintray-YYY-ZZZ: https://api.bintray.com/maven/YYY/ZZZ/YYY/;publish=1/com/github/YYY/YYY-core/VERSION/YYY-core-VERSION-sources.jar (781 kB at 96 kB/s)
[INFO] [INFO] Uploading to bintray-YYY-ZZZ: https://api.bintray.com/maven/YYY/ZZZ/YYY/;publish=1/com/github/YYY/YYY-core/VERSION/YYY-core-VERSION-sources.jar
[INFO] [INFO] Uploading to bintray-YYY-ZZZ: https://api.bintray.com/maven/YYY/ZZZ/YYY/;publish=1/com/github/YYY/YYY-core/VERSION/YYY-core-VERSION-javadoc.jar
[INFO] [INFO] Uploaded to bintray-YYY-ZZZ: https://api.bintray.com/maven/YYY/ZZZ/YYY/;publish=1/com/github/YYY/YYY-core/VERSION/YYY-core-VERSION-javadoc.jar (3.8 MB at 218 kB/s)
[INFO] [INFO] ------------------------------------------------------------------------
[INFO] [INFO] Reactor Summary for YYY-parent VERSION:
[INFO] [INFO]
[INFO] [INFO] YYY-parent ...................... SUCCESS [ 18.058 s]
[INFO] [INFO] YYY-core ........................ FAILURE [01:37 min]
[INFO] [INFO] YYY-core-testing ................ SKIPPED
[INFO] [INFO] YYY-B-core ...................... SKIPPED
[INFO] [INFO] YYY-B-testing ................... SKIPPED
[INFO] [INFO] ------------------------------------------------------------------------
[INFO] [INFO] BUILD FAILURE
[INFO] [INFO] ------------------------------------------------------------------------
[INFO] [INFO] Total time: 01:56 min
[INFO] [INFO] Finished at: 2020-03-28T03:33:28Z
[INFO] [INFO] ------------------------------------------------------------------------
[INFO] [ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:3.0.0-M1:deploy (default-deploy) on project YYY-core: ArtifactDeployerException: Failed to deploy artifacts: Could not transfer artifact com.github.YYY:YYY-core:jar:sources:VERSION from/to bintray-YYY-ZZZ (https://api.bintray.com/maven/YYY/ZZZ/YYY/;publish=1): Failed to transfer file: https://api.bintray.com/maven/YYY/ZZZ/YYY/;publish=1/com/github/YYY/YYY-core/VERSION/YYY-core-VERSION-sources.jar. Return code is: 409, ReasonPhrase: Conflict. -> [Help 1]
Since your pom file isn't attached, I am relying on this example.
The 409 conflict is because you are publishing the same file name to the same path twice.
From the attached logs it looks like you are deploying YYY-core-VERSION-sources.jar twice (it has 2 entries of Installing and Uploading in the log). This means that you are trying to publish a jar with the same name and to the same path. This causes the conflict.
I don't know from the input you gave why you have two identical sources files. One solution, as you have mentioned, is to use the override flag ;override=1 as shown in the Upload API example. I would also take a look why you have 2 files while another collaborator has, probably, only one.

Build failure: cannot download mule-extensions-3.8.3.pom unauthorized

I have problem with credentials to the repository-master.mulesoft.org
Could you help me?
[INFO] Building Mule connector-salesforce Application 1.0.0-SNAPSHOT
[INFO] --------------------------------------------------------------------- ---
[INFO] Downloading: https://repository- master.mulesoft.org/nexus/content/repositories/releases- ee/org/mule/extensions/mule-extensions/3.8.3/mule-extensions-3.8.3.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 23.892 s
download this to your local repository
https://repository.mulesoft.org/nexus/content/groups/public/org/mule/extensions/mule-extensions/3.8.3-SNAPSHOT/mule-extensions-3.8.3-20161125.034027-63.pom
under
[user].m2\repository\org\mule\extensions\mule-extensions\3.8.3

Cannot perform 'mvn camel:run' on Camel Example Project

I am new to camel and I've been trying to run one of the examples found in camel called camel-example-twitter-websocket, which may be found here.
When I run mvn compile it works successfully
$ mvn compile
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Camel :: Example :: Twitter WebSocket 2.17-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-enforcer-plugin:1.4:enforce (enforce-maven) # camel-example-twitter-websocket ---
[INFO]
[INFO] --- maven-bundle-plugin:2.3.7:cleanVersions (versions) # camel-example-twitter-websocket ---
[INFO]
[INFO] --- maven-remote-resources-plugin:1.5:process (default) # camel-example-twitter-websocket ---
[INFO]
[INFO] --- maven-resources-plugin:2.7:resources (default-resources) # camel-example-twitter-websocket ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 4 resources
[INFO] Copying 3 resources
[INFO]
[INFO] --- maven-resources-plugin:2.7:resources (default) # camel-example-twitter-websocket ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 4 resources
[INFO] Copying 3 resources
[INFO]
[INFO] --- maven-compiler-plugin:3.5.1:compile (default-compile) # camel-example-twitter-websocket ---
[INFO] Nothing to compile - all classes are up to date
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.504 s
[INFO] Finished at: 2016-03-18T15:27:30-04:00
[INFO] Final Memory: 22M/437M
[INFO] ------------------------------------------------------------------------
But when I run the second step mvn camel:run it does not work and I get the following output
$ mvn camel:run
[INFO] Scanning for projects...
[WARNING] The POM for org.apache.camel:camel-maven-plugin:jar:2.17-20151107.033312-28 is invalid, transitive dependencies (if any) will not be av ailable, enable debug logging for more details
[WARNING] Failed to retrieve plugin descriptor for org.apache.camel:camel-maven-plugin:2.17-SNAPSHOT: Plugin org.apache.camel:camel-maven-plugin: 2.17-SNAPSHOT or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.camel:camel-maven-plugin:jar:2. 17-SNAPSHOT
[WARNING] The POM for org.eclipse.m2e:lifecycle-mapping:jar:1.0.0 is missing, no dependency information available
[WARNING] Failed to retrieve plugin descriptor for org.eclipse.m2e:lifecycle-mapping:1.0.0: Plugin org.eclipse.m2e:lifecycle-mapping:1.0.0 or one of its dependencies could not be resolved: Failure to find org.eclipse.m2e:lifecycle-mapping:jar:1.0.0 in https://repo.maven.apache.org/maven2 w as cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced
[WARNING] The POM for org.apache.maven.plugins:maven-surefire-plugin:jar:{maven-surefire-plugin-version} is missing, no dependency information av ailable
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-surefire-plugin:{maven-surefire-plugin-version}: Plugin org.apa che.maven.plugins:maven-surefire-plugin:{maven-surefire-plugin-version} or one of its dependencies could not be resolved: Failure to find org.apa che.maven.plugins:maven-surefire-plugin:jar:{maven-surefire-plugin-version} in https://repo.maven.apache.org/maven2 was cached in the local repos itory, resolution will not be reattempted until the update interval of central has elapsed or updates are forced
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml
Downloading: https://repository.apache.org/content/repositories/snapshots/org/apache/maven/plugins/maven-metadata.xml
Downloading: https://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml
Downloading: https://repository.apache.org/content/repositories/snapshots/org/codehaus/mojo/maven-metadata.xml
Downloaded: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml (13 KB at 36.9 KB/sec)
Downloaded: https://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml (20 KB at 57.4 KB/sec)
Downloaded: https://repository.apache.org/content/repositories/snapshots/org/apache/maven/plugins/maven-metadata.xml (9 KB at 9.7 KB/sec)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.140 s
[INFO] Finished at: 2016-03-18T15:28:29-04:00
[INFO] Final Memory: 27M/327M
[INFO] ------------------------------------------------------------------------
[ERROR] No plugin found for prefix 'camel' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo] availabl e from the repositories [local (C:\Users\myNameHere\.m2\repository), apache.snapshots (https://repository.apache.org/content/repositories/snapshots/), central (https://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
It looks like this is more of a Maven issue than it is a Camel issue. I put in the default .m2/settings.xml file (before I had a mirror configured for my companies Nexus repository. I thought that might be messing things up so I took it all out). Out of desperation I even tried adding in the plugin repository from here http://camel.apache.org/maven-2-snapshot-repository-in-pom.html but that did not work.
Read the readme file how to run the examples.
Some examples run using mvn camel:run and others using mvn exec:java and what else.
And you run from the master branch in the source code. Instead you should download a version of Camel such as the latest 2.16.2 and use that. It ships the examples in the examples directory: http://camel.apache.org/download
If you run from master branch in the source code. You need to rebuild Camel first, see building: http://camel.apache.org/building.html
I've tested myself, and putting the plugin 2.16 don't solve it neither.
But in readme, I found this :
We have described this in more details at the Camel twitter documentation:
http://camel.apache.org/twitter
You will need to compile this example first:
mvn compile
To run the example type
mvn exec:java
Then open a browser to see live twitter updates in the web page
http://localhost:9090
Worked for me, I hope it will work for you too. I'll investigate the problem with the plugin that doesn't seems to export the prefix latter.

Maven blocking on downloading jars (artifactId :tomcat-maven-plugin)

i have a problem with tomcat-maven-plugin :
here's the code
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>tomcat-maven-plugin</artifactId>
<version>1.0-beta-1</version>
</plugin>
so after running this command: clean tomcat:run
i get this result :
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building seleniumproject Maven Webapp 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) # seleniumproject ---
[INFO] Deleting C:\Users\Amira\junoWorkspace\seleniumproject\target
[INFO]
[INFO] >>> tomcat-maven-plugin:1.0-beta-1:run (default-cli) # seleniumproject >>>
[INFO]
[INFO] --- maven-resources-plugin:2.5:resources (default-resources) #seleniumproject ---
[debug] execute contextualize
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) # seleniumproject ---
[INFO] No sources to compile
[INFO]
[INFO] <<< tomcat-maven-plugin:1.0-beta-1:run (default-cli) # seleniumproject <<<
[INFO]
[INFO] --- tomcat-maven-plugin:1.0-beta-1:run (default-cli) # seleniumproject ---
Downloading: http://repo.maven.apache.org/maven2/org/apache/maven/maven-plugin- api/2.0/maven-plugin-api-2.0.pom
Downloaded: http://repo.maven.apache.org/maven2/org/apache/maven/maven-plugin-api/2.0/maven-plugin-api-2.0.pom (601 B at 1.2 KB/sec)
Downloading: http://repo.maven.apache.org/maven2/junit/junit/3.8.2/junit-3.8.2.pom
.......................................
Downloaded: http://repo.maven.apache.org/maven2/org/apache/tomcat/dbcp/6.0.16/dbcp-6.0.16.jar (194 KB at 128.6 KB/sec)
Downloaded: http://repo.maven.apache.org/maven2/org/apache/tomcat/coyote/6.0.16/coyote-6.0.16.jar (725 KB at 367.5 KB/sec)
As you see it blocks on downloading :
Is there a solution please
I don't know where you get the url from:
http://repo.maven.apache.org/maven2/
but it looks you have changed the configuration in the settings.xml file, cause Maven Central has http://repo1.maven.apache.org/maven2/ instead. Furthermore i can recommend to use a repository manager (Nexus, Archiva, Artifactory).
BTW: Why are you using the mojo.codehaus tomcat plugin and not the offical of Apache http://tomcat.apache.org/maven-plugin.html

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