Initial commit

.gitattributes

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+*.sol linguist-language=Solidity

.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# TypeScript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+
+# next.js build output
+.next

LICENSE

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+MIT License
+
+Copyright (c) 2019 The Graph
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# Example Subgraph
+
+An example to help you get started with The Graph. For more information see the docs on https://thegraph.com/docs/.

abis/Gravity.json

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+[{"constant":false,"inputs":[{"name":"_imageUrl","type":"string"}],"name":"updateGravatarImage","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"setMythicalGravatar","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"owner","type":"address"}],"name":"getGravatar","outputs":[{"name":"","type":"string"},{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"uint256"}],"name":"gravatarToOwner","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"ownerToGravatar","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_displayName","type":"string"}],"name":"updateGravatarName","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_displayName","type":"string"},{"name":"_imageUrl","type":"string"}],"name":"createGravatar","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"uint256"}],"name":"gravatars","outputs":[{"name":"owner","type":"address"},{"name":"displayName","type":"string"},{"name":"imageUrl","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"anonymous":false,"inputs":[{"indexed":false,"name":"id","type":"uint256"},{"indexed":false,"name":"owner","type":"address"},{"indexed":false,"name":"displayName","type":"string"},{"indexed":false,"name":"imageUrl","type":"string"}],"name":"NewGravatar","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"id","type":"uint256"},{"indexed":false,"name":"owner","type":"address"},{"indexed":false,"name":"displayName","type":"string"},{"indexed":false,"name":"imageUrl","type":"string"}],"name":"UpdatedGravatar","type":"event"}]

bin/Counter.bin

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

contracts/Gravity.sol

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+pragma solidity ^0.4.0;
+
+contract GravatarRegistry {
+  event NewGravatar(uint id, address owner, string displayName, string imageUrl);
+  event UpdatedGravatar(uint id, address owner, string displayName, string imageUrl);
+
+  struct Gravatar {
+    address owner;
+    string displayName;
+    string imageUrl;
+  }
+
+  Gravatar[] public gravatars;
+
+  mapping (uint => address) public gravatarToOwner;
+  mapping (address => uint) public ownerToGravatar;
+
+  function createGravatar(string _displayName, string _imageUrl) public {
+    require(ownerToGravatar[msg.sender] == 0);
+    uint id = gravatars.push(Gravatar(msg.sender, _displayName, _imageUrl)) - 1;
+
+    gravatarToOwner[id] = msg.sender;
+    ownerToGravatar[msg.sender] = id;
+
+    emit NewGravatar(id, msg.sender, _displayName, _imageUrl);
+  }
+
+  function getGravatar(address owner) public view returns (string, string) {
+    uint id = ownerToGravatar[owner];
+    return (gravatars[id].displayName, gravatars[id].imageUrl);
+  }
+
+  function updateGravatarName(string _displayName) public {
+    require(ownerToGravatar[msg.sender] != 0);
+    require(msg.sender == gravatars[ownerToGravatar[msg.sender]].owner);
+
+    uint id = ownerToGravatar[msg.sender];
+
+    gravatars[id].displayName = _displayName;
+    emit UpdatedGravatar(id, msg.sender, _displayName, gravatars[id].imageUrl);
+  }
+
+  function updateGravatarImage(string _imageUrl) public {
+    require(ownerToGravatar[msg.sender] != 0);
+    require(msg.sender == gravatars[ownerToGravatar[msg.sender]].owner);
+
+    uint id = ownerToGravatar[msg.sender];
+
+    gravatars[id].imageUrl =  _imageUrl;
+    emit UpdatedGravatar(id, msg.sender, gravatars[id].displayName, _imageUrl);
+  }
+
+  // the gravatar at position 0 of gravatars[]
+  // is fake
+  // it's a mythical gravatar
+  // that doesn't really exist
+  // dani will invoke this function once when this contract is deployed
+  // but then no more
+  function setMythicalGravatar() public {
+    require(msg.sender == 0x8d3e809Fbd258083a5Ba004a527159Da535c8abA);
+    gravatars.push(Gravatar(0x0, " ", " "));
+  }
+}

contracts/Migrations.sol

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+pragma solidity ^0.4.0;
+
+contract Migrations {
+  address public owner;
+  uint public last_completed_migration;
+
+  constructor() public {
+    owner = msg.sender;
+  }
+
+  modifier restricted() {
+    if (msg.sender == owner) _;
+  }
+
+  function setCompleted(uint completed) public restricted {
+    last_completed_migration = completed;
+  }
+
+  function upgrade(address new_address) public restricted {
+    Migrations upgraded = Migrations(new_address);
+    upgraded.setCompleted(last_completed_migration);
+  }
+}

migrations/1_initial_migration.js

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+var Migrations = artifacts.require('./Migrations.sol')
+
+module.exports = function(deployer) {
+  deployer.deploy(Migrations)
+}

migrations/2_deploy_contract.js

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+const GravatarRegistry = artifacts.require('./GravatarRegistry.sol')
+
+module.exports = async function(deployer) {
+  await deployer.deploy(GravatarRegistry)
+}

migrations/3_create_gravatars.js

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+const GravatarRegistry = artifacts.require('./GravatarRegistry.sol')
+
+module.exports = async function(deployer) {
+  const registry = await GravatarRegistry.deployed()
+
+  console.log('Account address:', registry.address)
+
+  let accounts = await web3.eth.getAccounts()
+  await registry.createGravatar('Carl', 'https://thegraph.com/img/team/team_04.png', {
+    from: accounts[0],
+  })
+  await registry.createGravatar('Lucas', 'https://thegraph.com/img/team/bw_Lucas.jpg', {
+    from: accounts[1],
+  })
+}

package.json

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+{
+  "name": "hop",
+  "version": "0.1.0",
+  "scripts": {
+    "build-contract": "solc contracts/Gravity.sol --abi -o abis --overwrite && solc contracts/Gravity.sol --bin -o bin --overwrite",
+    "create": "graph create hop-protocol/hop --node https://api.thegraph.com/deploy/",
+    "create-local": "graph create hop-protocol/hop --node http://127.0.0.1:8020",
+    "codegen": "graph codegen",
+    "build": "graph build",
+    "deploy": "graph deploy hop-protocol/hop --ipfs https://api.thegraph.com/ipfs/ --node https://api.thegraph.com/deploy/",
+    "deploy-local": "graph deploy hop-protocol/hop --ipfs http://localhost:5001 --node http://127.0.0.1:8020"
+  },
+  "devDependencies": {
+    "@graphprotocol/graph-cli": "^0.20.0",
+    "@graphprotocol/graph-ts": "^0.20.0"
+  },
+  "dependencies": {
+    "babel-polyfill": "^6.26.0",
+    "babel-register": "^6.26.0",
+    "truffle": "^5.0.4",
+    "truffle-contract": "^4.0.5",
+    "truffle-hdwallet-provider": "^1.0.4"
+  }
+}

schema.graphql

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+type Gravatar @entity {
+  id: ID!
+  owner: Bytes!
+  displayName: String!
+  imageUrl: String!
+}

src/mapping.ts

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+import { NewGravatar, UpdatedGravatar } from '../generated/Gravity/Gravity'
+import { Gravatar } from '../generated/schema'
+
+export function handleNewGravatar(event: NewGravatar): void {
+  let gravatar = new Gravatar(event.params.id.toHex())
+  gravatar.owner = event.params.owner
+  gravatar.displayName = event.params.displayName
+  gravatar.imageUrl = event.params.imageUrl
+  gravatar.save()
+}
+
+export function handleUpdatedGravatar(event: UpdatedGravatar): void {
+  let id = event.params.id.toHex()
+  let gravatar = Gravatar.load(id)
+  if (gravatar == null) {
+    gravatar = new Gravatar(id)
+  }
+  gravatar.owner = event.params.owner
+  gravatar.displayName = event.params.displayName
+  gravatar.imageUrl = event.params.imageUrl
+  gravatar.save()
+}

subgraph.yaml

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+specVersion: 0.0.2
+description: Gravatar for Ethereum
+repository: https://github.com/graphprotocol/example-subgraph
+schema:
+  file: ./schema.graphql
+dataSources:
+  - kind: ethereum/contract
+    name: Gravity
+    network: mainnet
+    source:
+      address: '0x2E645469f354BB4F5c8a05B3b30A929361cf77eC'
+      abi: Gravity
+    mapping:
+      kind: ethereum/events
+      apiVersion: 0.0.4
+      language: wasm/assemblyscript
+      entities:
+        - Gravatar
+      abis:
+        - name: Gravity
+          file: ./abis/Gravity.json
+      eventHandlers:
+        - event: NewGravatar(uint256,address,string,string)
+          handler: handleNewGravatar
+        - event: UpdatedGravatar(uint256,address,string,string)
+          handler: handleUpdatedGravatar
+      file: ./src/mapping.ts

truffle.js

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+require('babel-register')
+require('babel-polyfill')
+const HDWalletProvider = require('truffle-hdwallet-provider')
+
+module.exports = {
+  networks: {
+    development: {
+      host: '127.0.0.1',
+      port: 8545,
+      network_id: '*',
+    },
+    ropsten: {
+      provider: function() {
+        return new HDWalletProvider(
+          process.env.MNEMONIC,
+          `https://ropsten.infura.io/v3/${process.env.ROPSTEN_INFURA_API_KEY}`
+        )
+      },
+      network_id: '3',
+    },
+  },
+  compilers: {
+    solc: {
+      version: '0.4.25'    // Fetch exact version from solc-bin (default: truffle's version)
+    }
+  }
+}