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This repository contains the source code of the EU Digital COVID Certificate Verifier Service.

The Verifier Service is part of the national backends and caches the public keys that are distributed through the DGCG. It is accessed by the Verifier Apps (Android, iOS) to update the key store periodically.

• Open JDK 11
• Maven
• MongoDB

This is the recommended way for taking part in the development. Please check, whether following prerequisites are installed on your machine:

• Open JDK 11 or a similar JDK 11 compatible VM
• Maven
• MongoDB a MongoDB instance running locally

This project also supports building a Docker image. First ensure you have a MongoDB instance running locally on mongodb://127.0.0.1:27017, otherwise change the connection url in the test file: ./src/test/resources/application.properties.

To build the Docker image you first need to build the project from the root:

git clone [email protected]:ministero-salute/it-dgc-verifier-service.git
cd it-dgc-verifier-service
mvn clean package 

Then, copy the file application.properties contained in the path ./src/main/resources into the ./it-dgc-verifier-service/config folder:

mkdir -p it-dgc-verifier-service/config
cp ./src/main/resources/application.properties ./it-dgc-verifier-service/config

By default the docker image uses a local mongodb instance running on mongodb://127.0.0.1:27017, you can always change the connection url by editing the envar in the enviroment section of the docker-compose.yml:

environment:
    MONGO_DB_URI=mongodb://user:password@mongodb:27017/DGC-dev

Once the requirements above shown are satisfied open a shell with working directory and execute

docker-compose up --build

The project has been implemented in Java 11.

Maven is used for dependency management. Maven is a build manager tool and mostly used in java projects. Maven was built on a central concept of project object model (POM).

The pom.xml contains all necessary information about the project, as well as configurations of plugins to be used during the build process.

The backend services follow a micro-service architecture, where each critical functionality is deployed as its own component. Components are distributed in dedicated Docker images, Docker being an industry standard platform for the containerization and virtualization of software.

The following dependencies are used to implement the business logic:

• spring data mongo. A libray which provides integration with the MongoDB document database. Key functional areas of Spring Data MongoDB are a POJO centric model for interacting with a MongoDB DBCollection and easily writing a Repository style data access layer. Released as an open-source project under the Apache 2.0 licence.
• Lombok. A Java library tool that generates code for minimizing boilerplate code. The library replaces boilerplate code with easy-to-use annotations.For example, by adding a couple of annotations, you can get rid of code clutters, such as getters and setters methods, constructors, hashcode, equals, and toString methods, and so on. Lombok is an open-source project released under the MIT licence.
• springdoc-openapi. A library that helps automating the generation of API documentation using spring boot projects. Springdoc-openapi works by examining an application at runtime to infer API semantics based on spring configurations, class structure and various annotations. Released as an open-source project under the Apache 2.0 licence.
• JaCoCo. A Maven plug-in that provides the JaCoCo runtime agent to your tests and allows basic report creation. JaCoCo is released as an open-source project under the EPL 2.0 licence.
• junit4. A simple framework to write repeatable tests. It is an instance of the xUnit architecture for unit testing frameworks. Junit4 is released as an open-source project under Eclipse Public License 1.0.

Contributions are most welcome. Before proceeding, please read the Code of Conduct for guidance on how to approach the community and create a positive environment. Additionally, please read our CONTRIBUTING file, which contains guidance on ensuring a smooth contribution process.

Here is a list of repository contributors. Thank you to everyone involved for improving this project, day by day.

Copyright 2021 (c) Ministero della Salute.

Please check the AUTHORS file for extended reference.

The licence for this repository is a GNU Affero General Public Licence version 3 (SPDX: AGPL-3.0). Please see the LICENSE file for full reference.