Example Subgraph for Mantle Testnet

An example to help you get started with graph service for mantle testnet. For more information see the docs on https://thegraph.com/docs/.

Example subgraph

https://graph.testnet.mantle.xyz/subgraphs/name/example/graphql

install dependencies

install foundry tools to ./bin

# for mac silicon chip, pls select the version fit your os/cpu platform
pkg=https://github.com/foundry-rs/foundry/releases/download/nightly/foundry_nightly_darwin_arm64.tar.gz

curl -sSL $pkg | tar xzf - -C ./bin

export $PATH=$PWD/bin:$PATH

install node packages

yarn

Deploy

Deploy an simple example contract

optional, or just use 0x1de239E2D98dea46C10D6D14F5E9EB427fdE6059 we deployed already

bin/forge create --legacy --rpc-url https://rpc.testnet.mantle.xyz \
    --private-key 0x... \
    --from 0x...\
    contracts/Gravity.sol:GravatarRegistry

Deployer: 0x00000500E87eE83A1BFa233512af25a4003836C8
Deployed to: 0x1de239E2D98dea46C10D6D14F5E9EB427fdE6059
Transaction hash: 0x4cf8fa85b6cb253cf8222c0863eea3607b31c5c168a9170262723077d674eb22

Deploy Subgraph

# modify contract address and startBlock to apropriate value in subgraph.yaml 
vim subgraph.yaml

yarn codegen

# see pacakges.json for what redo does
yarn redeploy

Send some tx by calling the contract

# replace the 0x.. to your real EOA
bin/cast send --legacy --rpc-url https://rpc.testnet.mantle.xyz \
    --private-key 0x.. \
    --from 0x.. \
    0x1de239E2D98dea46C10D6D14F5E9EB427fdE6059 \
    "createGravatar(string,string)" "Alice" "https://google.com/a.jpg"

Then you can query indexed data from https://graph.testnet.mantle.xyz/subgraphs/name/example/graphql .