feat: indexer service (#1)

# 🤖 Linear

Closes GIT-30 GIT-31 GIT-50 GIT-51

## Description
Adds indexer service, docker file for the indexer process from envio,
base docker-compose for the full app , docs and last but not least an
important test that ensures that all the events from envio config.yaml
file are handled.

## Checklist before requesting a review

- [x] I have conducted a self-review of my code.
- [x] I have conducted a QA.
- [x] If it is a core feature, I have included comprehensive tests.

.env.example

@@ -0,0 +1,31 @@
+############################################
+############### POSTGRES ###################
+############################################
+POSTGRES_EXPOSED_PORT=5433
+POSTGRES_PASSWORD=testing
+POSTGRES_USER=postgres
+POSTGRES_DB=envio-dev
+
+############################################
+############### HASURA #####################
+############################################
+HASURA_EXPOSED_PORT=8080
+HASURA_GRAPHQL_DATABASE_URL=postgres://postgres:testing@envio-postgres:5432/envio-dev
+HASURA_GRAPHQL_ENABLE_CONSOLE=true
+HASURA_GRAPHQL_ENABLED_LOG_TYPES=startup, http-log, webhook-log, websocket-log, query-log
+HASURA_GRAPHQL_NO_OF_RETRIES=10
+HASURA_GRAPHQL_ADMIN_SECRET=testing
+HASURA_GRAPHQL_STRINGIFY_NUMERIC_TYPES="true"
+PORT=8080
+HASURA_GRAPHQL_UNAUTHORIZED_ROLE=public
+
+############################################
+############### INDEXER ####################
+############################################
+ENVIO_PG_HOST=envio-postgres
+ENVIO_PG_PORT=5432 
+ENVIO_POSTGRES_PASSWORD=testing
+ENVIO_PG_USER=postgres
+ENVIO_PG_DATABASE=envio-dev
+HASURA_GRAPHQL_ENDPOINT=http://graphql-engine:8080/v1/metadata
+TUI_OFF=true

README.md

@@ -1,94 +1,50 @@
-# ts-turborepo-boilerplate
+# Grants Stack Indexer v2
 
-## Features
+Grants Stack Indexer v2 is a tool designed to index blockchain events generated by Allo contracts, making the data accessible over HTTP in JSON format. The data is organized in a structure that enables efficient querying and easy access to key components of the protocol.
 
-### Boilerplate monorepo setup
+## 📖 Overview
 
-Quickly start developing your offchain monorepo project with
-minimal configuration overhead using Turborepo
+This repository is a monorepo that contains 1 package and 2 applications:
 
-### Sample library with Viem
+-   @ts-turborepo-boilerplate/sample-lib: A sample library for querying account balances.
+-   @ts-turborepo-boilerplate/sample-app: A demo application demonstrating the use of sample-lib.
+-   @grants-stack-indexer/indexer: An [`envio`](https://docs.envio.dev/) indexer, that collects all the relevant events from Allo contracts.
 
-Simple provider that uses Viem client to query account balances
+## 🚀 Local Deployment (Dockerized)
 
-### Sample contracts with Foundry
+### Prerequisites
 
-Basic Greeter contract with an external interface
+Ensure you have the following installed on your machine:
 
-Foundry configuration out-of-the-box
+-   [Docker](https://www.docker.com/get-started)
+-   [Docker Compose](https://docs.docker.com/compose/install/)
 
-### Sample app that consumes the library
+### Run
 
-How much ETH do Vitalik and the Zero address hold together?
+To deploy locally with Docker, run the following command:
 
-### Testing
-
-Unit test setup with Vitest framework
-
-### Lint and format
-
-Use ESLint and Prettier to easily find issues as you code
-
-### Github workflows CI
-
-Lint code and check commit messages format on every push.
-
-Run all tests and see the coverage before merging changes.
-
-## Overview
-
-This repository is a monorepo consisting of 2 packages and 1 app:
-
--   [`@ts-turborepo-boilerplate/contracts`](./packages/contracts): A library for writing all required smart contracts
--   [`@ts-turborepo-boilerplate/sample-lib`](./packages/sample-lib): A sample library for querying account balances
--   [`@ts-turborepo-boilerplate/sample-app`](./apps/sample-app): A demo sample app that uses the sample-lib
-
-## 📋 Prerequisites
-
--   Ensure you have `node 20` and `pnpm 9.7.1` installed.
-
-## Tech stack
-
--   [pnpm](https://pnpm.io/): package and workspace manager
--   [turborepo](https://turbo.build/repo/docs): for managing the monorepo and the build system
--   [foundry](https://book.getfoundry.sh/forge/): for writing Solidity smart contracts
--   [husky](https://typicode.github.io/husky/): tool for managing git hooks
--   tsc: for transpiling TS and building source code
--   [prettier](https://prettier.io/): code formatter
--   [eslint](https://typescript-eslint.io/): code linter
--   [vitest](https://vitest.dev/): modern testing framework
--   [Viem](https://viem.sh/): lightweight library to interface with EVM based blockchains
-
-### Configuring Prettier sort import plugin
+```
+docker-compose up -d --build
+```
 
-You can further add sorting rules for your monorepo, for example in `.prettierrc` you can add:
+Once the deployment is complete, you can access Hasura by navigating to:
 
-```json
-    ...
-    "importOrder": [
-        "<TYPES>",
-        ...
-        "",
-        "<TYPES>^@myproject", //added
-        "^@myproject/(.*)$", //added
-        "",
-        ...
-    ],
-    ...
+```
+http://localhost:8080/
 ```
 
-We use [IanVs prettier-plugin-sort-imports](https://github.com/IanVS/prettier-plugin-sort-imports)
+Use the default password: `testing`.
 
 ## Contributing
 
 Wonderland is a team of top Web3 researchers, developers, and operators who believe that the future needs to be open-source, permissionless, and decentralized.
 
 [DeFi sucks](https://defi.sucks), but Wonderland is here to make it better.
 
-### 💻 Conventional Commits
+## 📝 Conventional Commits
 
 We follow the Conventional Commits [specification](https://www.conventionalcommits.org/en/v1.0.0/#specification).
 
-## License
+## 📜 License
 
-The primary license for the boilerplate is MIT. See the [`LICENSE`](./LICENSE) file for details.
+This project is licensed under the MIT License. See the [`LICENSE`](./LICENSE) file for more details.

apps/indexer/.dockerignore

@@ -0,0 +1,5 @@
+node_modules
+.git
+.gitignore
+*.md
+generated

apps/indexer/.gitignore

@@ -0,0 +1,36 @@
+*.exe
+*.obj
+*.out
+*.compile
+*.native
+*.byte
+*.cmo
+*.annot
+*.cmi
+*.cmx
+*.cmt
+*.cmti
+*.cma
+*.a
+*.cmxa
+*.obj
+*~
+*.annot
+*.cmj
+*.bak
+lib/*
+*.mlast
+*.mliast
+.vscode
+.merlin
+.bsb.lock
+/node_modules/
+benchmarks/
+artifacts
+cache
+generated
+logs
+*.bs.js
+*.bs.mjs
+*.gen.ts
+build

apps/indexer/.npmrc

@@ -0,0 +1,5 @@
+# Needed for ts build folder to have
+# access to rescript node_modules
+shamefully-hoist=true
+# Needed so users can run `pnpm install` in the root of the repo without requiring the `-w` flag.
+ignore-workspace-root-check=true

apps/indexer/Dockerfile

@@ -0,0 +1,11 @@
+FROM node:20-slim AS base
+ENV PNPM_HOME="/pnpm"
+ENV PATH="$PNPM_HOME:$PATH"
+RUN corepack enable
+COPY . /app
+WORKDIR /app
+
+RUN --mount=type=cache,id=pnpm,target=$PNPM_HOME/store pnpm install --frozen-lockfile
+RUN pnpm dlx envio codegen
+
+CMD pnpm dlx envio local db-migrate up && pnpm dlx envio start

apps/indexer/README.md

@@ -0,0 +1,56 @@
+# Indexer Service
+
+This repository contains the Envio indexer service, which is ready to run on the Envio hosted platform. It includes a Dockerfile for the indexer process.
+
+## 🚀 Deployment
+
+### Envio Hosted Solution
+
+To deploy the indexer on the Envio hosted service, refer to the official documentation:  
+[Envio Hosted Service Deployment](https://docs.envio.dev/docs/HyperIndex/hosted-service-deployment)
+
+## 🛠 Getting Started
+
+### Install Dependencies
+
+Run the following command to install all necessary dependencies:
+
+```bash
+pnpm i
+```
+
+### Local Development
+
+For local development, start the service with:
+
+```bash
+pnpm dev
+```
+
+## ➕ Adding a New Event
+
+To add a new event to the indexer, follow these steps:
+
+### Step 1: Modify Configuration
+
+Update the `config.yaml` file to include the new event you wish to handle. Ensure the event is correctly configured.
+
+### Step 2: Add an Event Handler
+
+Create a handler for the new event. This handler is essential for ensuring the event is indexed. Without a handler, the event (and its corresponding entry in the `raw_events` table) will not be saved or processed. Each event must have a handler to be included in `raw_events`.
+
+### Step 3: Redeploy the Environment
+
+After making the necessary changes, redeploy your environment to apply the updates.
+
+## 🔍 Notes
+
+Ensure each event is properly handled and thoroughly tested before redeploying the environment to prevent issues in the indexing process.
+
+## 🧪 Testing
+
+To run tests, use the following command:
+
+```bash
+pnpm test
+```