How to write a Connected Apps Token into Settings.xml and pom.xml for Maven CI/CD

1. About connected apps refer to documentation 
   • https://docs.mulesoft.com/access-management/connected-apps-overview
   • https://docs.mulesoft.com/access-management/connected-apps-developers#create-an-app
   • https://docs.mulesoft.com/release-notes/mule-maven-plugin/mule-maven-plugin-3.4.0-release-notes#features-and-functionality
   • Deployment documentation https://docs.mulesoft.com/mule-runtime/4.3/deploy-to-cloudhub
   • Connected apps can be used  solely for authentication and can be used for automation / Jenkins / CICD/ maven deployment
2. Create a connected app by using below article
   • Creating connected app and getting the bearer token example
   • You need to add all the scopes listed in the below screenshot which includes Cloudhub Organization Admin, Read Servers, View Environment and View Organization permissions as seen below.

3. Update your Mule application if you are deploying to Cloudhub
   • Make changes to your application pom.xml by following this doc for authentication method "Connected Apps".

<mule.maven.plugin.version>3.5.4</mule.maven.plugin.version>
...
<plugins>
    <plugin>
        <groupId>org.mule.tools.maven</groupId>
        <artifactId>mule-maven-plugin</artifactId>
        <version>${mule.maven.plugin.version}</version>
        <extensions>true</extensions>
        <configuration>
            <cloudHubDeployment>
                <uri>https://anypoint.mulesoft.com</uri>
                <muleVersion>${app.runtime}</muleVersion>
                <businessGroup>PATH_TO_BG</businessGroup>
                <applicationName>APP_NAME</applicationName>
                <environment>ENVIRONMENT</environment>
                <region>REGION</region>
                <workers>1</workers>
                <workerType>MICRO</workerType>
                <properties>
                    <key>value</key>
                </properties>
                <connectedAppClientId>CONN_APP_CLIENT_ID</connectedAppClientId>
                <connectedAppClientSecret>CONN_APP_CLIENT_SECRET</connectedAppClientSecret>
                <connectedAppGrantType>client_credentials</connectedAppGrantType>
                <objectStoreV2>true</objectStoreV2>
            </cloudHubDeployment>
        </configuration>
    </plugin>
    ...
</plugins>
...

• Get the client_id and client_secret values from the connected app you created earlier.

• Change the format for all your Mulesoft <server> entries such as  "Repository" and "anypoint-exchange-v2" The format should be changed from: 
   

<server>
      <id>Repository</id>
      <username>yourUserName</username>
      <password>yourPassword</password>
</server>

    to:

<server>
      <id>Repository</id>
      <username>~~~Client~~~</username> 
      <password>clientID~?~clientSecret</password>
 </server>

<username> is ~~~Client~~~ 
<password> is <clientID>~?~<clientSecret>

where: 

1. <clientID> is the client ID from the connected app
2. <clientSecret> is the client secret from the connected app