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devhub-subql-test-thomas

v0.0.3

Published

This project indexes Devhub's proposals and rfps

Downloads

6

Readme

SubQuery - Example Project for NEAR

SubQuery is a fast, flexible, and reliable open-source data indexer that provides you with custom APIs for your web3 project across all of our supported networks. To learn about how to get started with SubQuery, visit our docs.

This SubQuery project indexes all transactions of the token.sweat contract token from sweat_welcome.near (which rewards users for physically moving around). It also indexes all storage_deposit calls for the same contract on the NEAR mainnet.

Start

First, install SubQuery CLI globally on your terminal by using NPM npm install -g @subql/cli

You can either clone this GitHub repo, or use the subql CLI to bootstrap a clean project in the network of your choosing by running subql init and following the prompts.

Don't forget to install dependencies with npm install or yarn install!

Editing your SubQuery project

Although this is a working example SubQuery project, you can edit the SubQuery project by changing the following files:

  • The project manifest in project.yaml defines the key project configuration and mapping handler filters
  • The GraphQL Schema (schema.graphql) defines the shape of the resulting data that you are using SubQuery to index
  • The Mapping functions in src/mappings/ directory are typescript functions that handle transformation logic

SubQuery supports various layer-1 blockchain networks and provides dedicated quick start guides as well as detailed technical documentation for each of them.

Run your project

If you get stuck, find out how to get help below.

The simplest way to run your project is by running yarn dev or npm run-script dev. This does all of the following:

  1. yarn codegen - Generates types from the GraphQL schema definition and contract ABIs and saves them in the /src/types directory. This must be done after each change to the schema.graphql file or the contract ABIs
  2. yarn build - Builds and packages the SubQuery project into the /dist directory
  3. docker-compose pull && docker-compose up - Runs a Docker container with an indexer, PostgeSQL DB, and a query service. This requires Docker to be installed and running locally. The configuration for this container is set from your docker-compose.yml

You can observe the three services start, and once all are running (it may take a few minutes on your first start), please open your browser and head to http://localhost:3000 - you should see a GraphQL playground showing with the schemas ready to query. Read the docs for more information or explore the possible service configuration for running SubQuery.

Query your project

For this project, you can try to query with the following GraphQL code to get a taste of how it works.

{
  query {
    nearTxEntities(first: 50) {
      totalCount
      nodes {
        id
        signer
        receiver
      }
    }
    nearActionEntities(first: 50, orderBy: AMOUNT_DESC) {
      totalCount
      nodes {
        id
        sender
        receiver
        amount
      }
    }
  }
}

You can explore the different possible queries and entities to help you with GraphQL using the documentation draw on the right.

Publish your project

SubQuery is open-source, meaning you have the freedom to run it in the following three ways:

  • Locally on your own computer (or a cloud provider of your choosing), view the instructions on how to run SubQuery Locally
  • By publishing it to our enterprise-level Managed Service, where we'll host your SubQuery project in production ready services for mission critical data with zero-downtime blue/green deployments. We even have a generous free tier. Find out how
  • By publishing it to the decentralised SubQuery Network, the most open, performant, reliable, and scalable data service for dApp developers. The SubQuery Network indexes and services data to the global community in an incentivised and verifiable way

What Next?

Take a look at some of our advanced features to take your project to the next level!

  • Multi-chain indexing support - SubQuery allows you to index data from across different layer-1 networks into the same database, this allows you to query a single endpoint to get data for all supported networks.
  • Dynamic Data Sources - When you want to index factory contracts, for example on a DEX or generative NFT project.
  • Project Optimisation Advice - Some common tips on how to tweak your project to maximise performance.
  • GraphQL Subscriptions - Build more reactive front end applications that subscribe to changes in your SubQuery project.

Need Help?

The fastest way to get support is by searching our documentation, or by joining our discord and messaging us in the #technical-support channel.