Example Subgraph for erc1155

Run the example

1. Start graph node

   • Change working directory to docker
   • Run the graph node docker-compose up

2. Deploy smart contract

   truffle build
   truffle tests tests/mint-card-for-parser-test.js 
   

3. Deploy subgraph

   Change the contract address in the file subgraph.yaml by the contract address from the preceded step.

   yarn codegen
   yarn create-local
   yarn deploy-local
   

Docker

The docker-compose includes many serivces for testing purpose:

• The graph node: thegraph, ipfs, postgres, thegraph-graphql
• ganache-cli run at port 8545
• pgadmin run at port 5050

SQL

--- sgd3 is the schema name that could be changed automatically by thegraph

-- Transfer history of a address
select * 
from sgd3.transfer
where "to"='0xd4039eb67cbb36429ad9dd30187b94f6a5122215'
OR "from"='0xd4039eb67cbb36429ad9dd30187b94f6a5122215'

-- Owner count of cards
select card_id, count(*)
from sgd3.card_owner
group by card_id

-- Balance of an address
select * 
from sgd3.card_owner
where "owner" = '0xd5cc383881d6d9a7dc1891a0235e11d03cb992d3'
order by card_id