Indexing Ink with Goldsky

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Overview

Goldsky is a high-performance data indexing provider for Ink that makes it easy to extract, transform, and load on-chain data to power both application and analytics use cases. Goldsky offers two primary approaches to indexing and accessing blockchain data: Subgraphs (high-performance subgraphs) and Mirror (real-time data replication pipelines).

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Scope

Goldsky has partnered with Ink to make our product available to the ecosystem and provide dedicated support for Ink data indexing. The full scope of our partnership (which products are enabled, what partner-exclusive benefit is available, and who this benefit is available to) is outlined below.

Where perks are available to projects specified by the chain ecosystem, please reach out to their developer relations team for an access code and link to private signup form. Where perks are openly available to all developers, please contact sales@goldsky.com to apply the applicable partnership perks to your project.

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Getting started

To use Goldsky, you’ll need to create an account, install the CLI, and log in.

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Subgraphs

Ink Sepolia is available at the chain slug ink-sepolia. Subgraphs can be deployed on Goldsky in 2 ways:

• Via CLI from a local subgraph configuration file. If you are familiar with developing subgraphs already, you'll be familiar with this approach; after defining a subgraph locally (with a subgraph.yaml file, a schema.graphql file, and the necessary mappings to translate raw event data into the entities defined in the schema), you can deploy subgraphs to Goldsky (once the Goldsky CLI is installed) using goldsky subgraph deploy <name>/<version> --path . For more, read the step-by-step guide.
• Via instant subgraphs, where you can pass through a contract address and the ABI for that contract. This is a quick-start option that automatically generates the underlying subgraph configuration files on your behalf, making it easy to extract blockchain event data and serve it as an API endpoint without complex setup. Use the --from-abi flag in the command above instead of --path. For more, read the no-code subgraphs guide.

Check out this GitHub repo to see example implementations of each deployment method using the Inko ETH (IETH) ERC-20 token on Ink Sepolia.

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Mirror

Mirror pipelines allow users to replicate data into their own infrastructure (any of the supported sinks) in real time.

For a complete overview of how to deploy Mirror pipelines, including a video walkthrough, check the Create a Pipeline. Below, we will look at a few of the different ways by which you can deploy Mirror pipelines using Direct Indexing datasets for Ink Sepolia (remember that you can also use subgraphs as source to your pipelines); in specific, we’ll be streaming the ink_sepolia.receipt_transactions direct indexing dataset into a PostgreSQL database.

Pipelines can be deployed on Goldsky in 3 ways:

• Using the Pipeline Builder in the Goldsky dashboard:
  • Select Direct Indexing as data source filter on Ink Sepolia and select Enriched Transactions as dataset.
  • Follow the default options in the next steps and choose your pre-configured sink.
  • Deploy pipeline.
• Using the interactive CLI:
  • Enter command goldsky pipeline create <pipeline-name>.
  • This will kick off a guided flow with the first step to choose the dataset type. Choose Direct Indexing.
  • Next, select Ink Sepolia as chain with the enter key, then Enriched Transactions as the dataset by pressing space on the selected dataset which you can select using the up and down arrow keys. We will process historical data so select Process all historical data by pressing the enter key. This is the same as the yaml config setting of start_at: earliest. If you prefer to only ingest data starting when your pipeline is deployed, select Process data from the time this pipeline is created instead, this is equivalent to the yaml config setting start_at: latest.
  • When asked to choose another source, choose No by pressing enter.
  • Add your pre-configured sink. In this example case, we chose PostgreSQL and as a next step we selected the database schema.
  • Pipeline will be deployed automatically.
• Using a pipeline configuration file:
  • This makes it easier to set up complex pipelines involving multiple sources, multiple sinks, and more complex, SQL-based transformations. For the full reference documentation on, click here.
  • As in the previous steps, we’ll be deploying a pipeline to stream Ink Sepolia transactions. Unlike the other methods, we have added a transformation to only select specific data attributes from the whole dataset. This is the configuration file:

name: ink-sepolia-transactions
version: 1
status: ACTIVE
resource_size: s
apiVersion: 3
sources:
  ink_sepolia_receipt_transactions:
    dataset_name: ink_sepolia.receipt_transactions
    version: 1.0.0
    type: dataset
    start_at: earliest
transforms:
  subset_transform:
    primary_key: id
    sql: |
      SELECT
        id,
        from_address,
        to_address,
        input,
        `value`,
        block_hash,
        block_number
        FROM ink_sepolia_receipt_transactions
sinks:
  postgres_ink_sepolia_transactions:
    type: postgres
    table: ink_sepolia_transactions
    schema: public
    secret_name: <YOUR_SECRET_NAME>
    description: 'Postgres sink for: ink_sepolia_transactions'
    from: subset_transform

• Add your corresponding secret name and run goldsky pipeline apply ink-sepolia-transactions.yaml to deploy the pipeline.

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Getting support

Can't find what you're looking for? Reach out to us at support@goldsky.com for help.