ONAP Developer Set-Up

Follow the steps below to set up the development environment on your client machine, and to establish credentials with which you may access the repositories.

Create a Linux Foundation Account

Follow the instructions on the identity portal to create a Linux Foundation account and get access to the ONAP Gerrit instance.

Verify that you can log in at https://gerrit.onap.org/ and that you can see the ONAP list of repositories.

Basic Setup

Git

Install git for your OS in accordance with https://www.atlassian.com/git/tutorials/install-git

Since this is common for all OS, we will also use it to generate our SSH keys as well :

ssh-keygen

This should generate a private and public ssh key.

The public ssh key can then be uploaded to Gerrit (user setting, ssh keys, add new key) or elsewhere as needed for authorization.

Java

ONAP is moving to Java 11 but many projects still use Java 8.

Download and install the appropriate openjdk version in accordance with the component you are working and set JAVA_HOME environment variable to point to that

Maven

Download the latest Maven using installer from https://maven.apache.org/download.cgi

Add maven to your path variable.

To test the new installation run:

mvn -version

Use the settings.xml found in the oparent repo

Save this Maven settings.xml as your ~/.m2/settings.xml (windows c:\users\<username>\.m2)

WSL users can point to one common repo across Windows and Ubuntu as :

ln -s /mnt/c/Users/<username>/.m2 ~

Proxy settings for Maven (if required)

If you are behind a proxy you can add a proxy section to your settings.xml 

	<proxies>
        <proxy>
            <id>evil-corp-http</id>
            <active>true</active>
            <protocol>http</protocol>
            <host>proxy.evil-corp.com</host>
            <port>599</port>
            <nonProxyHosts>localhost|127.0.0.1|*.evil-corp.com|*.happy.evil-corp.com|fun.evil-corp.com</nonProxyHosts>
        </proxy>
        <proxy>
            <id>evil-corp-https</id>
            <active>true</active>
            <protocol>https</protocol>
            <host>proxy.evil-corp.com</host>
            <port>599</port>
            <nonProxyHosts>localhost|127.0.0.1|*.evil-corp.com|*.happy.evil-corp.com|fun.evil-corp.com</nonProxyHosts>
        </proxy>
	</proxies>

OS Specific Instructions

MAC/OSX  (in review under 10.15.7)

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

Redhat/CentOS (in review under RHEL 8.3)

to install kubernetes follow Cloud Native Deployment#Scriptedundercloud(Helm/Kubernetes/Docker)andONAPinstall-SingleVM

Ubuntu (in review under 20.04 )

in ~/.ssh/config

Host *
   StrictHostKeyChecking no
   UserKnownHostsFile=/dev/null

sudo passwd root

vi /etc/ssh/sshd_config

FROM:
PermitRootLogin prohibit-password
TO:
PermitRootLogin yes

curl https://releases.rancher.com/install-docker/17.03.sh | sh

Connecting to ONAP Gerrit

SSH Connection (Recommended)

Log in to the Gerrit host https://gerrit.onap.org/, pull down the menu under your user name (at the extreme top right of the browser window), click on "Settings":

Click your account name on the top right corner of the website and click on Settings.

Add the public ssh key that you created in the previous step.

HTTPS Connection

Problem running 'git remote update gerrit'
Fetching gerrit
fatal: unable to access 'https://USERNAME@gerrit.onap.org/r/a/mso/ ': Unknown SSL protocol error in connection to gerrit.onap.org:443 error: Could not fetch gerrit 

Proxy setting for IntelliJ and Git (if required)

git config --global https.proxy https://<proxy username>:<proxy password>@<proxy url> 

git config --global http.proxy http://<proxy username>:<proxy password>@<proxy url>

IDEs

Eclipse

Install Eclipse

Download and run the installer from: Install Eclipse. Select "Eclipse IDE for Java Developers" to install.

ONAP Eclipse Java Formatter 

Download onap-java-formatter.xml and import into Eclipse. 

(updates to the settings should be committed and merged back into the repository)

ONAP uses Google Java Style with some modifications. ( See Java code style )

            <plugins>
                <!--
                Using https://code.revelc.net/formatter-maven-plugin/ for Eclipse formatter
                Using https://github.com/diffplug/spotless/tree/master/plugin-maven for import order
                Use in combination to rewrite code and imports, then checkstyle
                
                mvn formatter:format spotless:apply process-sources
                -->
                <plugin>
                     <groupId>net.revelc.code.formatter</groupId>
                     <artifactId>formatter-maven-plugin</artifactId>
                     <version>2.8.1</version>
                     <configuration>
                        <configFile>${project.parent.basedir}/onap-java-formatter.xml</configFile>
                     </configuration>
                     <!-- https://code.revelc.net/formatter-maven-plugin/
                          use mvn formatter:format to rewrite source files
                          use mvn formatter:validate to validate source files -->
                 </plugin>
                <plugin>
                  <groupId>com.diffplug.spotless</groupId>
                  <artifactId>spotless-maven-plugin</artifactId>
                  <version>1.18.0</version>
                  <configuration>
                    <java>
                     <importOrder>
                       <order>com,java,javax,org</order>
                     </importOrder>
                    </java>
                  </configuration>
                <!-- https://github.com/diffplug/spotless/tree/master/plugin-maven
                     use mvn spotless:apply to rewrite source files
                     use mvn spotless:check to validate source files -->
                </plugin>
            </plugins>

mvn formatter:format spotless:apply process-sources

Install useful plugins for Eclipse

Install EclEmma for code coverage and SonarLint for static code analysis.

Set up Sonar towards ONAP for Eclipse

To bind your projects to the ONAP Sonar server, follow the instructions below.

Your projects should be imported in to Eclipse before this.

To see messages from Sonar introduced by edits made in the projects, select "Window -> Show View -> Other...". Expand "SonarLint" and select "SonarLint -> On-The-Fly".

Setting up the ONAP Checkstyle for Eclipse

Set "ONAP" configuration in Eclipse

To set the newly built checkstyle files in Eclipse:

1. Preferences->Checkstyle
2. Click "New"
3. Select "External Configuration File"
4. Give it a name eg ONAP
5. Point at the file <your_git_folder>/oparent/checkstyle/src/main/resources/onap-checkstyle/onap-java-style.xml  
   (assuming you have downloaded the oparent repo)
6. Click OK
7. Select "ONAP" configuration and click "Set as Default"
8. Select "Apply and Close"

Apply "ONAP" configuration to a project in Eclipse

Now we need to activate the checkstyle on one project and set it as the blueprint for all of them:

1. Select a project in eclipse and right click->Properties→Checkstyle
2. check "Checkstyle active for this project"
3. Select the "ONAP" checkstyle profile
4. Click "Apply and Close"

Spread blueprint to other projects for Eclipse

Now spread the profile to all other projects:

1. Select all the projects you want to apply the profile to in the Eclipse project explorer (not the one that you set up above)
2. Right click->Checkstyle->Configure projects from blueprint
3. Select the project you set up above
4. Now all the projects have the correct checkstyle setup.

Configure ONAP copyright for Eclipse

============LICENSE_START=======================================================
 Copyright (C) $today.year <organization name>
 ================================================================================
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at
  
       http://www.apache.org/licenses/LICENSE-2.0
 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
  
 SPDX-License-Identifier: Apache-2.0
 ============LICENSE_END=========================================================

IntelliJ

Download & Install

see https://www.jetbrains.com/idea/download/#section=windows

Configure ONAP code CheckStyle Plugin for IntelliJ

1. Select, File, Settings, Tools, Checkstyle  
2. Click on + beside the 'Configuration File' box to add a configuration
3. Set description to something like 'ONAP Rules'
4. Click on Browse to select the file <your_git_folder>/oparent/checkstyle/src/main/resources/onap-checkstyle/onap-java-style.xml  
   (assuming you have downloaded the oparent repo)
5. Complete the Wizard (you can set exclusion properties if needed)
6. Select the Configuration File you just added by selecting the relevant checkbox
7. Click [OK] to close the settings popup

Configure ONAP code style auto formatting for IntelliJ (using the same checkstyle rules and automating it for you )

1. Select, File, Settings, Editor, Code Style
2. Click on the gear icon at the end of the line for "Scheme:"
3. Optional: As importing a schema overrides the current scheme you might want to first use the 'Duplicate..' and  'Rename...' options to create an easily identifiable scheme e.g. 'ONAP Standard'
4. Import Scheme→Checkstyle Configuration
5. Click on Browse to select the file <your_git_folder>/oparent/checkstyle/src/main/resources/onap-checkstyle/onap-java-style.xml  
   (assuming you have downloaded the oparent repo)
6. Click OK

Configure ONAP copyright for IntelliJ

Set up SonarLint towards ONAP for IntelliJ

Prerequisites

• You need to be part of the onap organization in GitHub (see GitHub, click on your icon and select 'My Organizations')
  If you are not a member of this organization email support.linuxfoundation.org  and ask to be added to the onap organization in GitHub
  Note. It is possible to enter a different organization if you at least member of 1 organization (you can create your own in GitHub).
  The plugin wizard crashes if you are member of no organization at all, see this Bug: https://jira.sonarsource.com/browse/SLI-426

To use SonarLint with Onap projects you need to setup a connection with SonarCloud

1. Select, File, Settings, Tools, SonarLint.
2. Click on + beside the 'SonarCube / SonarClod connections' box to add a new connection
3. Set Configuration Name to something like 'ONAP'
4. Ensure sonarcloud is selected  and click [Next]
5. Click [Create Token]
6. Select GitHub, logon and follow the GitHub wizard to create a Token
7. Copy Token into IntelliJ wizard
8. Click [Next] (might have to wait a little while your data is being downloaded)
9. Select 'Open Network Automation Platform (ONAP)' from 'Your Organizations' and click [Next]
10. Click [Finish] to close the wizard
11. Click [OK] to leave settings

Then you need to bind each project to the corresponding project in GitHub/SonarCloud:

1. Select, File, Settings, Tools, SonarLint, Project Settings
2. Enable (check) 'Bind project to SonarQube / SonarCloud'
3. Select the connection created above using the [Configure the connection] button
4. Enter the project name (e.g. 'onap_ccsdk-sli-plugins') or select it using [Search in list..] 
5. Start typing the name of your project, and it should appear in a list box where it should be selected.
6. Click [OK] to finish

Optional Tools & Utilities

Python

Download Python from https://www.python.org/downloads/

Add python binary to Path.

Install "pip3", if you plan to use git-review.

git-review

In a shell, type the following command (assumes you installed python above) :  

pip3 install git-review

To use git review, you have to be in a Git clone directory that already contains a (possibly hidden) .gitreview configuration file (see Gerrit/Advanced usage#Setting up a repository for git-remote)

Configure Git to remember your Linux Foundation user name and email address (the user name and email address associated with your Linux Foundation login):

git config --global user.email <your_LF_account_email>

git config --global --add gitreview.username <your_LF_user_name>

Configure git review

git config --global gitreview.remote origin

If you are using VPN, you might encounter a proxy problem while connecting to the Linux Foundation website. To avoid the problem, you should add the proxy setting in git config, using the following command:

git config --global https.proxy https://<proxy username>:<proxy password>@<proxy url> 

git config --global http.proxy http://<proxy username>:<proxy password>@<proxy url>

NOTE: When entering the proxy username, you might be required to add the domain name in front of the username.

Node-JS

The dcae build will install npm in most cases.

However you can install it yourself from https://nodejs.org/en/download/

Verify your installation by 

npm -v

Local SonarQube Setup

It can be useful to have SonarQube running locally rather than pushing through CI for feedback.

This can be done using docker:

Images of the Community, Developer, and Enterprise Editions are available on Docker Hub.

1. Start the server by running:

   $ docker run -d --name sonarqube -p 9000:9000 sonarqube:latest

2. Log in to http://localhost:9000 with System Administrator credentials (login=admin, password=admin).
3. Click the Create new project button to analyze your first project.

Other Optional Tools

The component you are working on may require additional tool installations, see the relevant section under Development Guides.

Troubleshooting & Know Issues

Windows Limitations

Some repos might not clone in Windows until some file paths are reduced below 255 chars.

Enable long paths in windows as

git config --system core.longpaths true

Hack oparent to fix "curly bracket" issue

Appendix

• Building Entire ONAP