# ipld-eth-server [![Go Report Card](https://goreportcard.com/badge/github.com/vulcanize/ipld-eth-server)](https://goreportcard.com/report/github.com/vulcanize/ipld-eth-server) > ipld-eth-server is the server backend for indexed ETH IPLD objects ## Table of Contents 1. [Background](#background) 1. [Install](#install) 1. [Usage](#usage) 1. [Contributing](#contributing) 1. [License](#license) ## Background NOTE: WIP ipld-eth-server is used to service queries against the Ethereum IPLD objects indexed by [ipld-eth-indexer](https://github.com/vulcanize/ipld-eth-indexer). It exposes standard Ethereum JSON RPC endpoints on top of the database, in some cases these endpoints can leverage the unique indexes to improve query performance. Additional, unique endpoints are exposed which utilize the new indexes and state diff data objects. ## Dependencies Minimal build dependencies * Go (1.13) * Git * GCC compiler * This repository External dependency * Postgres database populated by [ipld-eth-indexer](https://github.com/vulcanize/ipld-eth-indexer) ## Install Start by downloading ipld-eth-server and moving into the repo: `GO111MODULE=off go get -d github.com/vulcanize/ipld-eth-server` `cd $GOPATH/src/github.com/vulcanize/ipld-eth-server` Then, build the binary: `make build` ## Usage After building the binary, run as `./ipld-eth-server serve --config=` ### Configuration Below is the set of parameters for the ipld-eth-server command, in .toml form, with the respective environmental variables commented to the side. The corresponding CLI flags can be found with the `./ipld-eth-server serve --help` command. ```toml [database] name = "vulcanize_public" # $DATABASE_NAME hostname = "localhost" # $DATABASE_HOSTNAME port = 5432 # $DATABASE_PORT user = "postgres" # $DATABASE_USER password = "" # $DATABASE_PASSWORD [log] level = "info" # $LOGRUS_LEVEL [server] ipcPath = "~/.vulcanize/vulcanize.ipc" # $SERVER_IPC_PATH wsPath = "127.0.0.1:8081" # $SERVER_WS_PATH httpPath = "127.0.0.1:8082" # $SERVER_HTTP_PATH graphql = true # $SERVER_GRAPHQL graphqlEndpoint = "" # $SERVER_GRAPHQL_ENDPOINT [ethereum] chainID = "1" # $ETH_CHAIN_ID defaultSender = "" # $ETH_DEFAULT_SENDER_ADDR rpcGasCap = "1000000000000" # $ETH_RPC_GAS_CAP httpPath = "127.0.0.1:8545" # $ETH_HTTP_PATH nodeID = "arch1" # $ETH_NODE_ID clientName = "Geth" # $ETH_CLIENT_NAME genesisBlock = "0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3" # $ETH_GENESIS_BLOCK networkID = "1" # $ETH_NETWORK_ID ``` The `database` fields are for connecting to a Postgres database that has been/is being populated by [ipld-eth-indexer](https://github.com/vulcanize/ipld-eth-indexer) The `server` fields set the paths for exposing the ipld-eth-server endpoints The `ethereum` fields set the chainID and default sender address to use for EVM simulation, and can optionally be used to configure a remote eth node to forward cache misses to ### Endpoints #### IPLD subscription TODO: Port the IPLD RPC subscription endpoints after the decoupling #### Ethereum JSON-RPC ipld-eth-server currently recapitulates portions of the Ethereum JSON-RPC api standard. The currently supported standard endpoints are: `eth_call` `eth_blockNumber` `eth_getLogs` `eth_getHeaderByNumber` `eth_getBlockByNumber` `eth_getBlockByHash` `eth_getTransactionByHash` TODO: Add the rest of the standard endpoints and unique endpoints (e.g. getSlice) ### Testing `make test` will run the unit tests `make test` setups a clean `vulcanize_testing` db ## Monitoring * Enable http server and metrics using parameters `--http --metrics` * ipld-eth-server exposes prometheus metrics at `/metric` endpoint * start prometheus using `monitoring/prometheus.yml` config (`prometheus --config.file=monitoring/prometheus.yml`) * start grafana, connect to prometheus datasource and import dashboard from `monitoring/grafana/dashboard_main.json` ![](monitoring/grafana.png) ## Contributing Contributions are welcome! VulcanizeDB follows the [Contributor Covenant Code of Conduct](https://www.contributor-covenant.org/version/1/4/code-of-conduct). ## License [AGPL-3.0](LICENSE) © Vulcanize Inc