Transactions & Instructions

In this tutorial, you'll learn how to initialize a Solana-based Substreams project using the Substreams CLI (substreams init command).

The CLI installation is supported only on Linux and macOS. If you're using Windows, consider using the DevContainer environment, which launches a Linux-based virtual environment.

Step 1: Initialize Your Solana Substreams Project

1. Install the Substreams CLI.

2. Running substreams init will give you the option to choose between two Solana project options. Select the one that best fits your requirements:

   • sol-hello-world: Creates a simple Substreams that outputs the accounts used in the Pump.Fun smart contract. It demonstrates how to access to full Solana Block, iterate over instructions and filter on a specific program ID.

   • sol-transactions: Creates a Substreams that filters Solana transactions based on one or more Program IDs and/or Account IDs, using the cached Solana Foundational Module.

   • sol-anchor-beta: Given an Anchor IDL, create a Substreams that decodes instructions and events. If an IDL isn’t available using the idl subcommand within the Anchor CLI, you’ll need to provide it yourself.

The modules within Solana Common exclude voting transactions, to benefit from a 75% reduction in data processing size and costs, delay your stream by over 1000 blocks from head. This can be done using the sleep function in Rust.

To access voting transactions, use the full Solana block, sf.solana.type.v1.Block, as input.

Step 2: Visualize the Data

1. Run substreams auth to create your account and generate an authentication token (JWT), then pass this token back as input.

2. Run substreams build to compile the project.

3. Run substreams gui to visualize and iterate on your extracted data.

Step 2.5: (Optionally) Transform the Data

1. Open the src/lib.rs file that has been generated.

2. Modify the transformations made to the data as needed. Every time you modify the code, you will have to recompile the project with substreams build.

Step 3: Load the Data

To make your Substreams queryable (as opposed to direct streaming), you can automatically send the data to a SQL data by using the SQL sink or through PubSub.

Additional Resources

You may find these additional resources helpful for developing your first Solana application.

Dev Container Reference

The Dev Container Reference helps you navigate the container and its common errors.

CLI Reference

The CLI reference lets you explore all the tools available in the Substreams CLI.

Substreams Components Reference

The Components Reference dives deeper into navigating the substreams.yaml.