Non-resolvable parent POM

Question

I am trying to develop a custom connector for mule by following http://www.mulesoft.org/documentation/display/current/Creating+a+Connector+Project tutorial. As shown in the tutorial, I am creating the project through command line by executing

mvn archetype:generate
    -DarchetypeGroupId=org.mule.tools.devkit
    -DarchetypeArtifactId=mule-devkit-archetype-cloud-connector
    -DarchetypeVersion=3.4.3
    -DgroupId=org.hello
    -DartifactId=hello-connector
    -Dversion=1.0-SNAPSHOT
    -DmuleConnectorName=Hello
    -Dpackage=org.hello
    -DarchetypeRepository=http://repository.mulesoft.org/releases

After importing the project to mule studio I am getting following error in my pom.xml file near the parent tag.

Project build error: Non-resolvable parent POM:
        Could not transfer artifact
        org.mule.tools.devkit:mule-devkit-parent:pom:3.4.3 from/to
        mulesoft-releases (http://repository.mulesoft.org/releases/):
        connection timed out to
        http://repository.mulesoft.org/releases/org/mule/tools/devkit/mule-devkit-parent/3.4.3/mule-devkit-parent-3.4.3.pom
        and 'parent.relativePath' points at wrong local POM.

Here is my pom.xml file.

<?xml version="1.0" encoding="UTF-8"?>
project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>org.hello</groupId>
    <artifactId>hello-connector</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>mule-module</packaging>
    <name>Hello Connector</name>

    <parent>
        <groupId>org.mule.tools.devkit</groupId>
        <artifactId>mule-devkit-parent</artifactId>
        <version>3.4.3</version>
    </parent>

    <properties>
        <junit.version>4.9</junit.version>
        <mockito.version>1.8.2</mockito.version>
        <jdk.version>1.7</jdk.version>
        <category>Community</category>
        <licensePath>LICENSE.md</licensePath>
        <devkit.studio.package.skip>false</devkit.studio.package.skip>
    </properties>

    <scm>
        <connection>scm:git:git://github.com:mulesoft/hello-connector.git</connection>
        <developerConnection>scm:git:[email protected]:mulesoft/hello-connector.git</developerConnection>
        <url>http://github.com/mulesoft/hello-connector</url>
    </scm>

    <repositories>
        <repository>
            <id>mulesoft-releases</id>
            <name>MuleSoft Releases Repository</name>
            <url>http://repository.mulesoft.org/releases/</url>
            <layout>default</layout>
        </repository>
        <repository>
            <id>mulesoft-snapshots</id>
            <name>MuleSoft Snapshots Repository</name>
            <url>http://repository.mulesoft.org/snapshots/</url>
            <layout>default</layout>
        </repository>
    </repositories>

</project>

I have changed the jdk version to 1.7. it was 1.6 in the auto generated pom. ignore any error in the heading, some formatting issue. I have tried various solutions mentioned on here but am not able to resolve the issue.

Solution

There is probably a firewall between your computer and the internet. You either have to configure Java to use this proxy.

Or you must download the parent POM manually and install it yourself into the local m2 repo. See this question how to do that: How to manually install an artifact in Maven 2?

Since you only need to install a POM, you need to trick mvn install:install-file:

mvn install:install-file -Dfile=<path-to-pomfile> -Dpackaging=pom -DpomFile=<path-to-pomfile>

This command will just install the POM itself.

Comments

[Sheikh Zubair]

The parent pom is getting downloaded to my local m2 repo. The auto generated pom.xml file of my project is showing error in the <parent> tag. Path to which pom file in the command you have mentioned should I use? I tried using path to the parent pom in m2 repo but it gave a build failure.

[Aaron Digulla]

There should be no valid parent POM in your m2 repo because of the error Could not transfer artifact. Can you please check twice that Maven actually downloaded org.mule.tools.devkit:mule-devkit-parent:pom:3.4.3 from http://repository.mulesoft.org/releases/? Is the content of the file correct? Does the checksum match?

[Sheikh Zubair]

I have a file by the name "mule-devkit-parent-3.4.3" located at path "C:\Users\sh265993\.m2\repository\org\mule\tools\devkit\mule‌​-devkit-parent\3.4.3‌​". Its file extension is .pom . I checked its contents and they seem correct to me.

[Aaron Digulla]

Then the metadata is outdated. Move C:\Users\sh265993\.m2\repository\org\mule\tools\devkit\mule-‌​devkit-parent somewhere else and run Maven again.

[Sheikh Zubair]

I cleared the .m2 repo and started again from the scratch. the error got resolved. But now I am not able to install the generated UpdateSite.zip file in my mule studio as shown in the tutorial. I have added the path "Hello-Connector - file:/D:/Mule/Examples/abc/hello-connector/target/UpdateSite‌​.zip" but it is giving error that it can find that path