Rosetta Metadium

ROSETTA-METADIUM IS CONSIDERED ALPHA SOFTWARE. USE AT YOUR OWN RISK!

Overview

rosetta-metadium provides a reference implementation of the Rosetta API for Metadium in Golang. If you haven't heard of the Rosetta API, you can find more information here.

Features

• Comprehensive tracking of all META balance changes
• Stateless, offline, curve-based transaction construction (with address checksum validation)
• Atomic balance lookups using go-ethereum's GraphQL Endpoint
• Idempotent access to all transaction traces and receipts

System Requirements

rosetta-metadium has been tested on an AWS c5.2xlarge instance. This instance type has 8 vCPU and 16 GB of RAM. If you use a computer with less than 16 GB of RAM, it is possible that rosetta-metadium will exit with an OOM error.

Recommended OS Settings

To increase the load rosetta-metadium can handle, it is recommended to tune your OS settings to allow for more connections. On a linux-based OS, you can run the following commands (source):

sysctl -w net.ipv4.tcp_tw_reuse=1
sysctl -w net.core.rmem_max=16777216
sysctl -w net.core.wmem_max=16777216
sysctl -w net.ipv4.tcp_max_syn_backlog=10000
sysctl -w net.core.somaxconn=10000
sysctl -p (when done)

We have not tested rosetta-metadium with net.ipv4.tcp_tw_recycle and do not recommend enabling it.

You should also modify your open file settings to 100000. This can be done on a linux-based OS with the command: ulimit -n 100000.

Usage

As specified in the Rosetta API Principles, all Rosetta implementations must be deployable via Docker and support running via either an online or offline mode.

YOU MUST INSTALL DOCKER FOR THE FOLLOWING INSTRUCTIONS TO WORK. YOU CAN DOWNLOAD DOCKER HERE.

Install

Running the following commands will create a Docker image called rosetta-metadium:latest.

From Source

After cloning this repository, run:

make build-local

Run

Running the following commands will start a Docker container in detached mode with a data directory at <working directory>/metadium-data and the Rosetta API accessible at port 8080.

Configuration Environment Variables

• MODE (required) - Determines if Rosetta can make outbound connections. Options: ONLINE or OFFLINE.
• NETWORK (required) - Ethereum network to launch and/or communicate with. Options: MAINNET or TESTNET (which defaults to TESTNET for backwards compatibility).
• PORT(required) - Which port to use for Rosetta.
• GMET (optional) - Point to a remote gmet node instead of initializing one
• SKIP_GMET_ADMIN (optional, default: FALSE) - Instruct Rosetta to not use the gmet admin RPC calls. This is typically disabled by hosted blockchain node services.

Mainnet:Online

docker run -d --rm --ulimit "nofile=100000:100000" -v "$(pwd)/metadium-data:/data" -e "MODE=ONLINE" -e "NETWORK=MAINNET" -e "PORT=8080" -p 8080:8080 -p 30303:30303 rosetta-metadium:latest

If you cloned the repository, you can run make run-mainnet-online.

Mainnet:Online (Remote)

docker run -d --rm --ulimit "nofile=100000:100000" -e "MODE=ONLINE" -e "NETWORK=MAINNET" -e "PORT=8080" -e "GMET=<NODE URL>" -p 8080:8080 -p 30303:30303 rosetta-metadium:latest

If you cloned the repository, you can run make run-mainnet-remote gmet=<NODE URL>.

Mainnet:Offline

docker run -d --rm -e "MODE=OFFLINE" -e "NETWORK=MAINNET" -e "PORT=8081" -p 8081:8081 rosetta-metadium:latest

If you cloned the repository, you can run make run-mainnet-offline.

Testnet:Online

docker run -d --rm --ulimit "nofile=100000:100000" -v "$(pwd)/metadium-data:/data" -e "MODE=ONLINE" -e "NETWORK=TESTNET" -e "PORT=8080" -p 8080:8080 -p 30303:30303 rosetta-metadium:latest

If you cloned the repository, you can run make run-testnet-online.

Testnet:Online (Remote)

docker run -d --rm --ulimit "nofile=100000:100000" -e "MODE=ONLINE" -e "NETWORK=TESTNET" -e "PORT=8080" -e "GMET=<NODE URL>" -p 8080:8080 -p 30303:30303 rosetta-metadium:latest

If you cloned the repository, you can run make run-testnet-remote gmet=<NODE URL>.

Testnet:Offline

docker run -d --rm -e "MODE=OFFLINE" -e "NETWORK=TESTNET" -e "PORT=8081" -p 8081:8081 rosetta-metadium:latest

If you cloned the repository, you can run make run-testnet-offline.

License

This project is available open source under the terms of the Apache 2.0 License.

© 2022 Metadium