Polkadot Indexer

Event indexer for Polkadot, Kusama, Westend and Paseo blockchains.

Architecture

Polkadot Indexer uses the Hybrid Indexer Rust library. It can be accessed using Hybrid Dapp.

Building

Polkadot Indexer can be built using cargo build, however it is necessary to use the nightly rustc.

rustup default nightly
cargo build --release

Compiling metadata can take a very long time.

Running

Usage: polkadot-indexer [OPTIONS]

Options:
  -c, --chain <CHAIN>                Chain to index [default: polkadot] [possible values: polkadot, kusama, westend, paseo]
  -d, --db-path <DB_PATH>            Database path
  -u, --url <URL>                    URL of Substrate node to connect to
  -b, --block-number <BLOCK_NUMBER>  Block number to start indexing from
      --queue-depth <QUEUE_DEPTH>    Maximum number of concurrent requests to the chain [default: 64]
  -p, --port <PORT>                  Port to open for WebSocket queries [default: 8172]
  -v, --verbose...                   More output per occurrence
  -q, --quiet...                     Less output per occurrence
  -h, --help                         Print help
  -V, --version                      Print version

Docker

First build the docker image:

docker build .

Run the docker image for each chain in a separate tab (replace [image_hash] with the hash of the docker image displayed at the end of the build):

docker run --rm -p 8172:8172 [image_hash] -c polkadot -b 16730000 -p 8172

docker run --rm -p 8173:8173 [image_hash] -c kusama -b 19120000 -p 8173

docker run --rm -p 8175:8175 [image_hash] -c westend -b 16940000 -p 8175

docker run --rm -p 8174:8174 [image_hash] -c paseo -b 6550000 -p 8174