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[![Coverage Status](https://coveralls.io/repos/github/opengovsg/FormSG/badge.svg?branch=develop)](https://coveralls.io/github/opengovsg/FormSG?branch=develop) | ||
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## Table of Contents | ||
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- [FormSG](#formsg) | ||
- [Table of Contents](#table-of-contents) | ||
- [Contributing](#contributing) | ||
- [Features](#features) | ||
- [Local Development (Docker)](#local-development-docker) | ||
- [Prerequisites](#prerequisites) | ||
- [First Setup](#first-setup) | ||
- [Running Locally](#running-locally) | ||
- [Accessing email locally](#accessing-email-locally) | ||
- [Environment variables](#environment-variables) | ||
- [Trouble-shooting](#trouble-shooting) | ||
- [Testing](#testing) | ||
- [Testing Prerequisites](#testing-prerequisites) | ||
- [Running tests](#running-tests) | ||
- [Unit tests](#unit-tests) | ||
- [End-to-end tests](#end-to-end-tests) | ||
- [Architecture](#architecture) | ||
- [MongoDB Scripts](#mongodb-scripts) | ||
- [Support](#support) | ||
- [Acknowledgements](#acknowledgements) | ||
- [Contributing](#contributing) | ||
- [IMPORTANT NOTE TO ALL CONTRIBUTORS](#important-note-to-all-contributors) | ||
- [Features](#features) | ||
- [Local Development (Docker)](#local-development-docker) | ||
- [Prerequisites](#prerequisites) | ||
- [First Setup](#first-setup) | ||
- [Running Locally](#running-locally) | ||
- [Adding dependencies](#adding-dependencies) | ||
- [Accessing email locally](#accessing-email-locally) | ||
- [Environment variables](#environment-variables) | ||
- [Trouble-shooting](#trouble-shooting) | ||
- [Testing](#testing) | ||
- [Testing Prerequisites](#testing-prerequisites) | ||
- [Running tests](#running-tests) | ||
- [Unit tests](#unit-tests) | ||
- [End-to-end tests](#end-to-end-tests) | ||
- [Cross-browser testing](#cross-browser-testing) | ||
- [Architecture](#architecture) | ||
- [MongoDB Scripts](#mongodb-scripts) | ||
- [Support](#support) | ||
- [Database Alternatives](#database-alternatives) | ||
- [Migrating from Mongoose ODM to Prisma ORM](#migrating-from-mongoose-odm-to-prisma-orm) | ||
- [Replacing MongoDB with CockroachDB](#replacing-mongodb-with-cockroachdb) | ||
- [Other Prisma supported DBs](#other-prisma-supported-dbs) | ||
- [Other potential DB migrations](#other-potential-db-migrations) | ||
- [Acknowledgements](#acknowledgements) | ||
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## Contributing | ||
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Please contact FormSG ([email protected]) for any details. | ||
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## Database Alternatives | ||
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### Migrating from Mongoose ODM to Prisma ORM | ||
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FormSG uses Mongoose as the Object-Document Mapping (ODM) to MongoDB. This means that our code is strongly coupled with MongoDB as Mongoose solely supports it. | ||
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In order to use a different database with FormSG you will have to first migrate from Mongoose to other object modelling libraries. One of which is Prisma. | ||
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Prisma is an Object-Relational Mapping (ORM) library that can also be used as the object model for MongoDB. Prisma is compatible with various other relational databases like Cockroach DB. | ||
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Follow this [guide](https://www.prisma.io/docs/guides/migrate-to-prisma/migrate-from-mongoose#overview-of-the-migration-process) by Prisma to migrate from Mongoose. | ||
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The guide has 4 primary steps: | ||
1. Install Prisma CLI | ||
2. Introspect the current MongoDB for the data model | ||
1. For this section, Prisma’s introspection should be able to create prisma models that will replace your `server.model.ts` for each collection | ||
2. Additionally, as Prisma is relational, you could add relations between the various documents. One good relation to add will be `form` many to one `user` on the `[form.email](http://form.email)` field. | ||
3. Install Prisma Client | ||
4. Replace Mongoose Queries with Prisma Client | ||
1. This step will likely take the most refactoring efforts | ||
2. This will include most files in `formsg/src` ending with `service.ts` | ||
3. Including test files ending with `service.spec.ts` | ||
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#### Replacing MongoDB with CockroachDB | ||
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Thereafter, you could set up CockroachDB which is a distributed SQL DB. Follow the quick start guide by [CockroachDB](https://www.cockroachlabs.com/docs/cockroachcloud/quickstart) to create a CockroachDB Serverless cluster. | ||
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To replace the local development instance, you can follow this [guide](https://www.cockroachlabs.com/docs/stable/start-a-local-cluster-in-docker-mac). As FormSG uses Docker for local development, you will have to replace the `mongoDB` container from `docker-compose.yml` to the `cockroachDB` version. | ||
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Then connect to [CockroachDB](https://www.prisma.io/docs/getting-started/setup-prisma/add-to-existing-project/relational-databases/connect-your-database-typescript-postgresql) by changing the DB url in `.env` to the one from your CockroachDB `DATABASE_URL="YOUR_COCKROACH_DB_URL"`. | ||
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For local development, if the DB is replaced as above, you should not need to modify the ports as it will still be hosted on `localhost:27017`. | ||
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#### Other Prisma supported DBs | ||
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MongoDB can be replaced with other various relational databases supported by Prisma in this [list](https://www.prisma.io/docs/reference/database-reference/supported-databases). | ||
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### Other potential DB migrations | ||
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It is also possible to migrate from Mongoose to [Ottoman](https://ottomanjs.com/), which is another ODM. | ||
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The process will be simpler than migrating to Prisma, but Ottoman is more restrictive and can only be used together with Couchbase, which is also a noSQL DB like MongoDB. | ||
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Refer to this [guide](https://www.couchbase.com/blog/migrate-mongodb-mongoose-couchbase-ottoman/) to migrate from Mongoose to Ottoman and then replace MongoDB with Couchbase. | ||
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## Acknowledgements | ||
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FormSG acknowledges the work done by [Arielle Baldwynn](https://github.com/whitef0x0) to build and maintain [TellForm](https://github.com/tellform), on which FormSG is based. | ||
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{ | ||
"name": "FormSG", | ||
"description": "Form Manager for Government", | ||
"version": "6.75.1", | ||
"version": "6.76.0", | ||
"homepage": "https://form.gov.sg", | ||
"authors": [ | ||
"FormSG <[email protected]>" | ||
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