This page documents, how to set up your local development machine so that you can contribute to Avni products. If you are familiar with Docker, you can also refer to this page: Set up Avni locally with Docker

This setup documentation assumes that the user knows how to install and use some of the commonly used utilities. There is enough documentation on the Internet for installing and using them (putting in your version of Ubuntu would give you better results). We may link these docs in some places but not always. The exact commands are indicated as this always. Please ensure you have the following software setup.

• Git
• GitHub account
• Your OS user has sudo access
• Curl
• nvm
• Flyway command line tool (optional)

Other information

• The GitHub organization for Avni is here - https://github.com/avniproject which has all the repositories.
• The Linux user using which installation has to be done is expected to be a sudo user

Server-Side Components

PostgreSQL

• Install postgresql-server, postgresql-contrib packages (version = 12.x)
• Change postgres login access from peer to trust - Edit /etc/postgresql/PG.VER/main/pg_hba.conf. As in line 2 and 9 of this file.
• Restart postgres - sudo systemctl restart postgresql.service
• Create OpenCHS database, user and install extension - make build_db su=postgres

Java

• Install JDK 8
• Set JAVA_HOME,
  OR
  Add installed JDK to jenv using
  jenv add /usr/localCellar/openjdk@8/1.8.*

Avni Server

• Clone avni-server from Github
• Create the database - make build_db
• Start Avni Server by running the command make start_server from the home directory of the avni-server project. (the first time it may take a few minutes to download Gradle, maven dependencies, and all the database migrations. wait till you see Started OpenCHS....)
• Verify Avni server is running - curl <http://localhost:8021/concept> - should give you a few concepts in the JSON response.

Avni Rules Server

• Clone rules-server from Github
• Use nvm to install node version requires - nvm install from the rules-server directory. It would pick up the .nvmrc file to install the correct version.
• Use make deps to install dependencies
• Use make start for starting the server

Avni ETL Server

• Clone avni-etl from Github
• Avni ETL uses the same database as avni-server for unit tests. Hence to run the test you need clear/setup test database from the avni-server project.
  • Run make rebuild_testdb deploy_test_schema from avni-server, you will need flyway for this. The other way is to run make test_server once to setup the latest test database schema.
  • Run make test from avni-etl
• make start_server from avni-etl

Conceptual note

Avni authenticates against an external system (Cognito User Pools) which is a common resource. In developer environments, we do not use authentication because that would mean creating and sharing users on the user pool. If we use common users across developer machines the token issued and user status (locked, password) become shared data - leading to one developer blocking another user. This can hamper productivity. Hence for now, instead of engineering a solution around it, in developer environments, we can bypass authentication. This is sub-optimal but useful at a small scale (number of developers).

Bypassing authentication leaves one problem behind - how does the server know which user is sending the requests. As you will see later that we tell the server about the user, hence the server assumes that when no user is supplied to it, it should use that default user.

Start the server with the default user as implementation by running it is as: OPENCHS_USER_NAME=admin@jnpct make start_server

Field app components

Android SDK

• Install Android Studio (for SDK manager and device manager).
  brew install android-studio
  Note: Genymotion is preferred usually because of a lower resource configuration, but Mac M1 does not support Genymotion.
• Install JDK 11

  brew install openjdk@11;
  jenv add /usr/local/Cellar/openjdk@11/11.\*/ #only if using jenv
  

• Use SDK Manager in android-studio to install latest - platforms;android-31 and _build-tools
• Set ANDROID_HOME and ANDROID_SDK_ROOT environment variables
  (usually $HOME/Android/sdk on linux and $HOME/Library/Android/sdk on Mac)
• Modify PATH to include $ANDROID_HOME/tools and $ANDROID_HOME/tools/bin
  OR
  On a mac :Install android-platform-tools brew install android-platform-tools.
  This makes android tools executables available on the path

Android Emulator

• Install Genymotion or Android studio.
• Create a virtual android device and start it
  TIP: you can start the device without starting studio by using the following command
  $ANDROID_SDK_ROOT/emulator/emulator -avd <your-avd-name>

Avni Android Client

• Clone avni-client from GitHub
• Use nvm to install node version requires - nvm install from the avni-client directory. It would pick up the .nvmrc file to install the correct version. Do read up on nvm if you are not familiar.
• Install node dependencies - make deps (this would take some time in installing all the node dependencies)
• Verify unit tests are running fine - make test
• Replace "localhost" with "10.0.2.2" in androidDevice.mk and dev.json.template files for "Mac OSX m1" with non-genymotion emulator
• Launch the app on an Android device
  • cp packages/openchs-android/config/env/dev.json.template packages/openchs-android/config/env/dev.json.
  • From the avni-client folder, perform the make run_packager in one terminal and perform make run_app in another terminal. After the app loads up in the emulator, press the sync button in the app. This should download all the configuration and master data that has been set up for this implementation.

Web app components

• Clone avni-web-app
• Run nvm install from root dir of avni-web-app
• Install Yarn. Instructions here
• make deps start (ensure that you have started the server by providing the user)
• If the command fails with errors about fsevents, then check the version of Python installed and used as default
• Configure pyenv and install 3.11.3 version of python on the machine and set it as local default

  #> pyenv versions
  #> pyenv install 2.7.1
  #> pyenv install 3.11.3
  #> pyenv local 3.11.3
  #> pyenv versions
  

• Open the app by going to http://localhost:6010
• To start the web app as a specific user like admin@jnpct or dev@jnpct you can run - REACT_APP_DEV_ENV_USER=admin@jnpct make start or REACT_APP_DEV_ENV_USER=dev@jnpct make start

Keycloak

Note: This is optional and is relevant only if you are working on features related to Avni on-premise deployment. We do not require Cognito or Keycloak access for most work (see conceptual note). There is a makefile that most of the following commands as targets.

• Follow the steps given here up to Login to admin console - https://www.keycloak.org/getting-started/getting-started-zip.
• Request for a sample realm file that you can import from the team, using thebin/kc.sh import --file=basic_realm.json. Note the server must be stopped to run this command. Post import you can start Keycloak again.
• Log in to the Keycloak console and create a super admin user. This user is set up in the Avni database to be able to access any organization. This user should have an attribute by name=custom:userUUID and the value to be the same as the UUID of this user in the Avni database.
• In the client, settings set the Web Origins to http://localhost:6010 (this is the origin during development for the Avni web app)

Setting up an implementation

Avni completed the setup and will create a blank slate. In this blank slate, you can create a new organization and configure the organization by setting up the applications, locations, users, etc. But if that is too much for you to get a feel of what is possible in Avni, then you can apply an implementation after creating the organization and an organization admin user. All the steps to follow below are from avni-web-app.

• Create a new organization (note that you are a super admin when you are doing this)
• Switch to the organization by choosing the org in the dropdown near the top right
• Create an organization admin user (by filling only the mandatory fields and setting the org admin value correctly)
• Get access to bundle export of an existing implementation by downloading it from another environment
• Install the bundle by uploading it

Common tasks

• Debugging avni-client

  • Use console.log(). You will be able to see the logs by running make log or in metro output.
  • Debugging or testing changes done in avni-models
    • Since avni-models is an npm dependency in avni-client, you will have to build it locally and copy over the code in node_modules. Build it from avni-models repo by running make deploy-to-avni-client

• Debugging avni-webapp

  • Use chrome/firefox debugger or console.log().
  • Debugging or testing changes done in avni-models
    • Same as how it's done in avni-client (you can find the target in Makefile of avni-models)

SETUP COMPLETE !!!