Substreams

Repo contains all substreams build by airstack.

Steps to run the substream with substream cli

Prerequisite

• Install the substreams CLI

• Setup development env

• You will need firehose node to run substream, or you can use firehose node provided by streaming fast team for development. Get a token to access firehose node.

Run a substream

1. Generate rust code with protogen

substreams protogen ./substreams.yaml --exclude-paths="sf/ethereum,sf/substreams,google"

2. Add target wasm32-unknown-unknown

rustup target add wasm32-unknown-unknown

3. Build the project and install the rust dependencies

cargo build --target wasm32-unknown-unknown --release

If you face any authentication error on downloading dependencies, add below code to your ~/.gitconfig by using code . ~/.gitconfig

[url "https://github.com/rust-lang/crates.io-index"]
	insteadOf = https://github.com/rust-lang/crates.io-index

4. Run the substream. Make sure to change module name & block number based on substream.

substreams run -e mainnet.eth.streamingfast.io:443 \
   substreams.yaml \
   map_transfers \
   --start-block 10000000 \
   --stop-block 20000000

Create a substream package (.spkg)

To create substream package, run substreams pack <path_to_substreams.yaml>