Connect Phala's Oracle to EVM Consumer Contract

Overview

This project represents a basic EVM Consumer Contract that is compatible with a deployed Oracle written in TypeScript on Phala Network.

Note: For simplicity, we will utilize Polygon Mumbai and Polygon Mainnet for the following examples.

Prerequisites

Active Phala Profile with version >= 1.0.1 via Phat Contract 2.0 UI
Hardhat
For EVM Mainnet deployments:
- Ex: Polygonscan API Key that can be generated on polygonscan
RPC Endpoint for EVM Chain Mainnet & EVM Chain Testnet
- Alchemy - This repo example uses Alchemy's API Key.
- Infura
- Personal RPC Node (Ex. ProjectPi)
Polkadot Account for Phala PoC5 Testnet and Mainnet deployment

Environment Variables:

Check out the environment variables here in .env.local file.

Getting Started

🚨 Note 🚨: If you cloned this repo or created a template, skip to Create a Phala Profile

First you will need to install the @phala/fn CLI tool using your node package manager (npm) or use node package execute (npx). In this tutorial we use npx.

Now create your first template with the CLI tool command:

npx @phala/fn@latest init userJourney
# ? Please select one of the templates for your "userJourney" project: (Use arrow keys)
# ❯ phat-contract-starter-kit. The Phat Contract Starter Kit
#   lensapi-oracle-consumer-contract. Polygon Consumer Contract for LensAPI Oracle

Choose phat-contract-starter-kit template and press enter to see something similar to the example below:

npx @phala/fn@latest init userJourney
# ? Please select one of the templates for your "userJourney" project: phat-contract-starter-kit. The Phat Contract Starter Kit
# Downloading the template: https://github.com/Phala-Network/phat-contract-starter-kit... ✔
# The project is created in /Users/hashwarlock/Projects/Phala/Temp/userJourney 🎉
# Now run:
#
#  cd userJourney
#  npm install

cd into the newly created template and ls the directory which will look similar to below.

cd userJourney
ls
# total 736
# drwxr-xr-x  18 hashwarlock  staff   576B Sep  6 15:32 .
# drwxr-xr-x  35 hashwarlock  staff   1.1K Sep  6 15:32 ..
# -rw-r--r--   1 hashwarlock  staff   2.1K Sep  6 15:32 .env.local
# -rw-r--r--   1 hashwarlock  staff   227B Sep  6 15:32 .gitignore
# -rw-r--r--   1 hashwarlock  staff    34K Sep  6 15:32 LICENSE
# -rw-r--r--   1 hashwarlock  staff   8.9K Sep  6 15:32 README.md
# drwxr-xr-x   4 hashwarlock  staff   128B Sep  6 15:32 assets
# drwxr-xr-x   5 hashwarlock  staff   160B Sep  6 15:32 contracts
# -rw-r--r--   1 hashwarlock  staff   1.3K Sep  6 15:32 hardhat.config.ts
# -rw-r--r--   1 hashwarlock  staff    95B Sep  6 15:32 mumbai.arguments.ts
# -rw-r--r--   1 hashwarlock  staff   2.6K Sep  6 15:32 package.json
# -rw-r--r--   1 hashwarlock  staff    96B Sep  6 15:32 polygon.arguments.ts
# drwxr-xr-x   5 hashwarlock  staff   160B Sep  6 15:32 scripts
# drwxr-xr-x   3 hashwarlock  staff    96B Sep  6 15:32 src
# drwxr-xr-x   3 hashwarlock  staff    96B Sep  6 15:32 test
# -rw-r--r--   1 hashwarlock  staff   201B Sep  6 15:32 tsconfig.json
# -rw-r--r--   1 hashwarlock  staff   290K Sep  6 15:32 yarn.lock

Create a Phala Profile

This step requires you to have a Polkadot account. You can get an account from one of the following:

Polkadot.js Wallet Extension
Talisman Wallet
SubWallet (Support for iOS/Android)

First, create your Phala Profile account on the Phala PoC5 Testnet or Phala Mainnet. Here is a quick 1 minute YouTube video on setting up from scratch. Here is what your Phala Profile account overview should look like:

Option 1: Export Polkadot account as json file

Go to your browser and click on the polkadot.js extension. Select your account and click "Export Account". Next, you will be prompted for your password before saving the file to your project directory. Note this is what will be set to POLKADOT_WALLET_ACCOUNT_PASSWORD. Make sure to save the file as polkadot-account.json in the root of your project directory.

Option 2: Set mnemonic phrase to `POLKADOT_WALLET_SURI`

After creating your Phala Profile, set your .env variable POLKADOT_WALLET_SURI to the mnemonic phrase from generating the new Polkadot Account.

Here is a screenshot of how to set POLKADOT_WALLET_SURI:

Testing Locally

Test Default Phat Contract Locally

With a template created and a basic default Phat Contract example ready to test, let’s step through the process of preparing your repo to execute the test locally.

First step is to install the package dependencies with the following command:

yarn install

Everything should go smoothly and produce similar output below:

yarn install
# [1/4] 🔍  Resolving packages...
# [2/4] 🚚  Fetching packages...
# [3/4] 🔗  Linking dependencies...
# warning " > @typechain/ethers-v5@10.1.0" has unmet peer dependency "@ethersproject/bytes@^5.0.0".
# [4/4] 🔨  Building fresh packages...
# ✨  Done in 4.95s.

Now that the package dependencies are installed, lets build the default Phat Contract which is located in ./src/index.ts.

For those want to understand what the contents of ./src/index.ts mean, go to the PHAT_CONTRACT_INFO.md file to read more. If you are already familiar with the concepts then you can proceed to with the deployment process.

Build the default Phat Contract with this command:

yarn build-function

You will see output similar to the example below. and a file in ./dist/index.js will be generated.

yarn build-function
# Creating an optimized build... done
# Compiled successfully.
#
#   17.66 KB  dist/index.js
# ✨  Done in 3.48s.

With our default Phat Contract built, we can run some initial tests. First test will be simple.

yarn run-function

It was expected for it to fail like this:

yarn run-function
# handle req: undefined
# Malformed request received
# {"output":"0x000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"}
# ✨  Done in 0.96s.

Notice that the test fails and reports that a Malformed request received was emitted and the request was undefined. This is expected as you will need to define the parameters by adding a -a abi.encode(requestId, profileId) https://api-mumbai.lens.dev to your command.

To simulate the expected result locally, run the Phala Oracle function now with this command:

yarn run-function -a 0x0000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000043078303100000000000000000000000000000000000000000000000000000000 https://api-mumbai.lens.dev

What are the ingredients for the yarn run-function command?

Our Phat Contract script, now fully constructed, is ready for a trial run. This simulation mirrors the live script's operation when deployed on the Phala Network.

The command's first parameter is a HexString, representing a tuple of types [uintCoder, bytesCoder]. This serves as the entry function. The second parameter is a string, embodying the configurable secrets fed into the main function.

The Coders.decode function deciphers these parameters, yielding the decoded requestId and encodedReqStr. These decoded elements then become the raw material for the rest of the custom logic within the script.
export default function main(request: HexString, secrets: string): HexString {
  console.log(`handle req: ${request}`);
  let requestId, encodedReqStr;
  try {
    [requestId, encodedReqStr] = Coders.decode([uintCoder, bytesCoder], request);
  } catch (error) {
    console.info("Malformed request received");
  }
// ...
} 

How the query looks under the hood

HTTP Endpoint: https://api-mumbai.lens.dev
Profile ID: 0x01

Expected Graphql Query:

query Profile {
  profile(request: { profileId: "0x01" }) {
    stats {
        totalFollowers
        totalFollowing
        totalPosts
        totalComments
        totalMirrors
        totalPublications
        totalCollects
    }
  }
}

Expected Output:

{
  "data": {
    "profile": {
      "stats": {
        "totalFollowers": 3361,
        "totalFollowing": 0,
        "totalPosts": 3,
        "totalComments": 0,
        "totalMirrors": 0,
        "totalPublications": 3,
        "totalCollects": 1597
      }
    }
  }
}

You will see:

yarn run-function -a 0x00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000040000000
00000000000000000000000000000000000000000000000000000000043078303100000000000000000000000000000000000000000000000000000000 https://api-mumbai.lens.dev
# handle req: 0x0000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000043078303100000000000000000000000000000000000000000000000000000000
# Request received for profile 0x01
# response: 0,1,3346
# {"output":"0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000d12"}
# ✨  Done in 1.42s.

We have now successfully tested the default Phat Contract and ran a test to verify the function returns a response as expected.

Testing Default Phat Contract with Local Hardhat Node

Previously we showed how to test the default Phat Contract locally without a running node, but we can also run two other tests.

Run the default mocha e2e tests.
Run local hardhat node and watch the requests that are pushed and see how the Phat Contract transforms the data.

Run the default mocha e2e tests

Lets’s start with the first test case.

Note: You will need to ensure you configure your local vars POLYGON_RPC_URL and MUMBAI_RPC_URL .env file. You can do this with cp .env.local .env then edit the .env with your information.

Expected error if .env not configured.

yarn hardhat test
# Error HH8: There's one or more errors in your config file:

#  * Invalid value undefined for HardhatConfig.networks.polygon.url - Expected a value of type string.
#  * Invalid value undefined for HardhatConfig.networks.mumbai.url - Expected a value of type string.
  
# To learn more about Hardhat's configuration, please go to https://hardhat.org/config/

# For more info go to https://hardhat.org/HH8 or run Hardhat with --show-stack-traces
# error Command failed with exit code 1.
# info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

yarn hardhat test

You will now see that all test cases have passed.

yarn hardhat test
# Compiled 14 Solidity files successfully
#
#  OracleConsumerContract.sol
#    ✔ Push and receive message (1664ms)
#
#  1 passing (2s)
#
# ✨  Done in 3.29s.

This is how the e2e mocha test will look like. You can customize this file at OracleConsumerContract.ts.

Run local hardhat node and watch the requests that are pushed and see how the Phat Contract transforms the data

First we will start a local hardhat node.

yarn hardhat node

Example output

yarn hardhat node
# Started HTTP and WebSocket JSON-RPC server at http://127.0.0.1:8545/

# Accounts
# ========

# WARNING: These accounts, and their private keys, are publicly known.
# Any funds sent to them on Mainnet or any other live network WILL BE LOST.

With our hardhat node running locally, we can now deploy the OracleConsumerContract.sol contract to the local hardhat network.

yarn localhost-deploy

yarn localhost-deploy
# Deploying...
# Deployed { consumer: '0x0165878A594ca255338adfa4d48449f69242Eb8F' }
# ✨  Done in 0.94s.

Make sure to copy the deployed contract address when you deploy your own contract locally. Note you contract address will be different than 0x0165878A594ca255338adfa4d48449f69242Eb8F. We will now start watching the hardhat node deployed contract for any new requests.

yarn localhost-watch 0x0165878A594ca255338adfa4d48449f69242Eb8F artifacts/contracts/OracleConsumerContract.sol/OracleConsumerContract.json dist/index.js -a https://api-mumbai.lens.dev/

yarn localhost-watch 0x0165878A594ca255338adfa4d48449f69242Eb8F artifacts/contracts/OracleConsumerContract.sol/OracleConsumerContract.json dist/index.js -a https://api-mumbai.lens.dev/
# $ phat-fn watch 0x0165878A594ca255338adfa4d48449f69242Eb8F artifacts/contracts/OracleConsumerContract.sol/OracleConsumerContract.sol.json dist/index.js -a https://api-mumbai.lens.dev/
# Listening for OracleConsumerContract.sol MessageQueued events...

Let’s now make a new request and see what happens with the listener’s output. In separate tab, you will push a request with the following.

LOCALHOST_CONSUMER_CONTRACT_ADDRESS=0x0165878A594ca255338adfa4d48449f69242Eb8F yarn localhost-push-request

LOCALHOST_CONSUMER_CONTRACT_ADDRESS=0x0165878A594ca255338adfa4d48449f69242Eb8F yarn localhost-push-request
# Pushing a request...
# Received event [ResponseReceived]: {
#  reqId: BigNumber { value: "1" },
#  input: '0x01',
#  value: BigNumber { value: "1597" }
# }
# ✨  Done in 4.99s.

If we look back at the listener tab, we will see output has been appended.

Listening for OracleConsumerContract MessageQueued events...
Received event [MessageQueued]: {
  tail: 0n,
  data: '0x0000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000043078303100000000000000000000000000000000000000000000000000000000'
}
handle req: 0x0000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000043078303100000000000000000000000000000000000000000000000000000000
Request received for profile 0x01
response: 0,1,1597
JS Execution output: 0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000063d

Deployment

Now that you have the prerequisites to deploy a Polygon Consumer Contract on Polygon, lets begin with some initials tasks.

Install Dependencies & Compile Contracts

# install dependencies
$ yarn

# compile contracts
$ yarn compile

Deploy to Polygon Mumbai Testnet

With the contracts successfully compiled, now we can begin deploying first to Polygon Mumbai Testnet. If you have not gotten MATIC for Mumbai Testnet then get MATIC from a faucet. Ensure to save the address after deploying the Consumer Contract because this address will be use in the "Configure Client" section of Phat Bricks UI. The deployed address will also be set to the environment variable MUMBAI_CONSUMER_CONTRACT_ADDRESS.

yarn test-deploy

# deploy contracts to testnet mumbai
yarn test-deploy
# Deploying...
#
# 🎉 Your Consumer Contract has been deployed, check it out here: https://mumbai.polygonscan.com/address/0x10FA409109E073C15b77A8352cB6A89C12CD1605
#
# You also need to set up the consumer contract address in your .env file:
#
# MUMBAI_CONSUMER_CONTRACT_ADDRESS=0x10FA409109E073C15b77A8352cB6A89C12CD1605
#
# Configuring...
# Done
# ✨  Done in 8.20s.

(Optional) Verify Contract on Polygon Mumbai Testnet

Ensure to update the mumbai.arguments.ts file with the constructor arguments used to instantiate the Consumer Contract. If you add additional parameters to the constructor function then make sure to update the mumbai.arguments.ts file.

Note: Your contract address will be different than 0x090E8fDC571d65459569BC87992C1026121DB955 when verifying your contract. Make sure to get your actual contract address from the console log output after executing yarn test-deploy.

yarn test-verify <MUMBAI_CONSUMER_CONTRACT_ADDRESS>

yarn test-verify 0x090E8fDC571d65459569BC87992C1026121DB955
# yarn run v1.22.18
# $ hardhat verify --network mumbai --constructor-args mumbai.arguments.ts 0x090E8fDC571d65459569BC87992C1026121DB955
# Nothing to compile
# No need to generate any newer typings.
# Successfully submitted source code for contract
# contracts/OracleConsumerContract.sol:OracleConsumerContract.sol at 0x090E8fDC571d65459569BC87992C1026121DB955
# for verification on the block explorer. Waiting for verification result...
#
# Successfully verified contract OracleConsumerContract.sol on Etherscan.
# https://mumbai.polygonscan.com/address/0x090E8fDC571d65459569BC87992C1026121DB955#code
# ✨  Done in 5.91s.

Deploy Phat Contract to PoC5 Testnet

For customizing your Phat Contract, checkout Phat Contract custom configurations in JS_API_DOC.md to learn more before deploying to PoC5 testnet.

Now that are Phat Contract has built successfully, let's deploy to Phala PoC5 Testnet with the following command:

# If you did not export your Polkadot account in a 
# polkadot-account.json file in the root of project
yarn test-deploy-function
# If polkadot-account.json is in the root of project
yarn test-deploy-function -a ./polkadot-account.json

Here is the expected output:

Note: your contract IDs will vary and not be the same as the IDs below.

yarn test-deploy-function -a ./polkadot-account.json
# ? Please enter your client RPC URL https://polygon-mumbai.g.alchemy.com/v2/JLjOfWJycWFOA0kK_SJ4jLGjtXkMN1wc
# ? Please enter your consumer address 0xA4Be456Fd0d41968a52b34Cdb8Ba875F2281134a
# ? Please Enter hahaha account password [hidden]
# Creating an optimized build... done
# Compiled successfully.
#
#  17.64 KB  dist/index.js
# Connecting to the endpoint: wss://poc5.phala.network/ws... ⡿
# (node:25497) ExperimentalWarning: buffer.Blob is an experimental feature. This feature could change at any time
# Connecting to the endpoint: wss://poc5.phala.network/ws... done
# Querying your Brick Profile contract ID... done
# Your Brick Profile contract ID: 0x4071788a8ce6fbab0cacea0cb1aa52853b5537db7955643e5010c22913c2b1dd
# Instantiating the ActionOffchainRollup contract... done
# The ActionOffchainRollup contract has been instantiated: 0x9c777c16b0a185caa895835b8f3b9e8d67be9f5e30197f71b4d32d2b8fde4b3b
# Setting up the actions... done
# 🎉 Your workflow has been added, you can check it out here: https://bricks-poc5.phala.network/workflows/0x4071788a8ce6fbab0cacea0cb1aa52853b5537db7955643e5010c22913c2b1dd/3
# Your Attestor address: 0x2b5fe2920cce2f522d69613adaa9378ba43b687d
# Your WORKFLOW_ID: 3
# ✨  Done in 73.22s.

Go to the PoC5 Testnet Phat Contract UI Dashboard and you can see your newly deployed Phat Contract.

Interact with Consumer Contract on Polygon Mumbai

Test Consumer Contract on Mumbai with a few tests to check for malformed requests failures, successful requests, and set the attestor.

Please make sure your have set your attestor address in .env file MUMBAI_PHALA_ORACLE_ATTESTOR=

yarn test-set-attestor

yarn test-set-attestor
# yarn run v1.22.18
# $ hardhat run --network mumbai ./scripts/mumbai/set-attestor.ts
# Setting attestor...
# 🚨NOTE🚨
# Make sure to set the Consumer Contract Address in your Phat Contract 2.0 UI dashboard (https://bricks-poc5.phala.network)
# - Go to 'Configure Client' section where a text box reads 'Add Consumer Smart Contract'
# - Set value to 0x090E8fDC571d65459569BC87992C1026121DB955
# Done
# ✨  Done in 2.69s.

Test pushing a malform request.

yarn test-push-malformed-request

yarn test-push-malformed-request
# yarn run v1.22.18
# $ hardhat run --network mumbai ./scripts/mumbai/push-malformed-request.ts
# Pushing a malformed request...
# Done
# ✨  Done in 2.48s.

Test pushing a valid request.

yarn test-push-request

yarn test-push-request
# Pushing a request...
# Done
# ✨  Done in 2.97s.

Update Phat Contract on Phala PoC5 Testnet

Sometimes you may have had a bug in your script or you want to test things out on the fly without deploying a whole new Phat Contract. We now allow you to update your Phat Contract easily in the commandline. Now let's update the Phat Contract with the following command:

# If you did not export your Polkadot account in a 
# polkadot-account.json file in the root of project
yarn test-update-function
# If polkadot-account.json is in the root of project
yarn test-update-function -a ./polkadot-account.json

yarn test-update-function -a ./polkadot-account.json
# ? Please Enter hahaha account password [hidden]
# Creating an optimized build... done
# Compiled successfully.
#
#   17.64 KB  dist/index.js
# Connecting to the endpoint: wss://poc5.phala.network/ws... ⡿
# (node:25392) ExperimentalWarning: buffer.Blob is an experimental feature. This feature could change at any time
# Connecting to the endpoint: wss://poc5.phala.network/ws... done
# Querying your Brick Profile contract ID... done
# Your Brick Profile contract ID: 0x4071788a8ce6fbab0cacea0cb1aa52853b5537db7955643e5010c22913c2b1dd
# Checking your workflow settings... done
# Updating... done
# The Phat Function for workflow 1 has been updated.
# ✨  Done in 10.82s.

Congrats! You've now successfully updated your Phat Contract!

Deploy to Polygon Mainnet

Ensure to save the address after deploying the Consumer Contract because this address will be used in the "Configure Client" section of Phat Bricks UI. The deployed address will also be set to the environment variable POLYGON_CONSUMER_CONTRACT_ADDRESS.

Note: Your contract address will be different than 0xbb0d733BDBe151dae3cEf8D7D63cBF74cCbf04C4 when verifying your contract. Make sure to get your actual contract address from the console log output after executing yarn main-deploy.

yarn main-deploy
# Deploying...
#
# 🎉 Your Consumer Contract has been deployed, check it out here: https://polygonscan.com/address/0xbb0d733BDBe151dae3cEf8D7D63cBF74cCbf04C4
#
# You also need to set up the consumer contract address in your .env file:
#
# POLYGON_CONSUMER_CONTRACT_ADDRESS=0xbb0d733BDBe151dae3cEf8D7D63cBF74cCbf04C4
#
# Configuring...
# Done
# ✨  Done in 8.20s.

(Optional) Verify Contract on Polygon Mainnet

Ensure to update the polygon.arguments.ts file with the constructor arguments used to instantiate the Consumer Contract. If you add additional parameters to the constructor function then make sure to update the polygon.arguments.ts file.

yarn main-verify 0xbb0d733BDBe151dae3cEf8D7D63cBF74cCbf04C4
# Nothing to compile
# No need to generate any newer typings.
# Successfully submitted source code for contract
# contracts/OracleConsumerContract.sol.sol:OracleConsumerContract.sol.sol.sol at 0xbb0d733BDBe151dae3cEf8D7D63cBF74cCbf04C4
# for verification on the block explorer. Waiting for verification result...
#
# Successfully verified contract OracleConsumerContract.sol on Etherscan.
# https://polygonscan.com/address/0xbb0d733BDBe151dae3cEf8D7D63cBF74cCbf04C4#code
# Done in 8.88s.

Deploy Phat Contract to Phala Mainnet

For customizing your Phat Contract, Phat Contract custom configurations can be found here in JS_API_DOC.md to learn more before deploying to Phala Mainnet.

Now that are Phat Contract has built successfully, let's deploy to Phala Mainnet with the following command:

# If you did not export your Polkadot account in a 
# polkadot-account.json file in the root of project
yarn main-deploy-function
# If polkadot-account.json is in the root of project
yarn main-deploy-function -a ./polkadot-account.json

Here is the expected output:

Note: your contract IDs will vary and not be the same as the IDs below.

yarn main-deploy-function -a ./polkadot-account.json
# ? Please enter your client RPC URL https://polygon.g.alchemy.com/v2/JLjOfWJycWFOA0kK_SJ4jLGjtXkMN1wc
# ? Please enter your consumer address 0xA4Be456Fd0d41968a52b34Cdb8Ba875F2281134a
# ? Please Enter hahaha account password [hidden]
# Creating an optimized build... done
# Compiled successfully.
#
#  17.64 KB  dist/index.js
# Connecting to the endpoint: wss://api.phala.network/ws... ⡿
# (node:25497) ExperimentalWarning: buffer.Blob is an experimental feature. This feature could change at any time
# Connecting to the endpoint: wss://api.phala.network/ws... done
# Querying your Brick Profile contract ID... done
# Your Brick Profile contract ID: 0x4071788a8ce6fbab0cacea0cb1aa52853b5537db7955643e5010c22913c2b1dd
# Instantiating the ActionOffchainRollup contract... done
# The ActionOffchainRollup contract has been instantiated: 0x9c777c16b0a185caa895835b8f3b9e8d67be9f5e30197f71b4d32d2b8fde4b3b
# Setting up the actions... done
# 🎉 Your workflow has been added, you can check it out here: https://bricks-poc5.phala.network/workflows/0x4071788a8ce6fbab0cacea0cb1aa52853b5537db7955643e5010c22913c2b1dd/3
# Your Attestor address: 0x2b5fe2920cce2f522d69613adaa9378ba43b687d
# Your WORKFLOW_ID: 2
# ✨  Done in 73.22s.

Interact with Consumer Contract on Polygon Mainnet

Execute Scripts to Consumer Contract on Polygon Mainnet. The Consumer Contract on Polygon Mainnet with a few actions to mimic a malformed request, successful requests, and set the attestor.

yarn main-set-attestor
# Setting attestor...
# 🚨NOTE🚨
# Make sure to set the Consumer Contract Address in your Phat Contract 2.0 UI dashboard (https://bricks-poc5.phala.network)
# - Go to 'Configure Client' section where a text box reads 'Add Consumer Smart Contract'
# - Set value to 0xbb0d733BDBe151dae3cEf8D7D63cBF74cCbf04C4
# Done
# ✨  Done in 1.56s.
# execute push-malformed-request
yarn main-push-malformed-request
# Pushing a malformed request...
# Done
# execute push-request
yarn main-push-request
# Pushing a request...
# Done

Update Phat Contract on Phala Mainnet

Sometimes you may have had a bug in your script or you want to test things out on the fly without deploying a whole new Phat Contract. We now allow you to update your Phat Contract easily in the commandline. Now let's update the Phat Contract with the following command:

# If you did not export your Polkadot account in a 
# polkadot-account.json file in the root of project
yarn main-update-function
# If polkadot-account.json is in the root of project
yarn main-update-function -a ./polkadot-account.json

yarn main-update-function -a ./polkadot-account.json
# ? Please Enter hahaha account password [hidden]
# Creating an optimized build... done
# Compiled successfully.
#
#   17.64 KB  dist/index.js
# Connecting to the endpoint: wss://api.phala.network/ws... ⡿
# (node:25392) ExperimentalWarning: buffer.Blob is an experimental feature. This feature could change at any time
# Connecting to the endpoint: wss://api.phala.network/ws... done
# Querying your Brick Profile contract ID... done
# Your Brick Profile contract ID: 0x4071788a8ce6fbab0cacea0cb1aa52853b5537db7955643e5010c22913c2b1dd
# Checking your workflow settings... done
# Updating... done
# The Phat Function for workflow 1 has been updated.
# ✨  Done in 10.82s.

Closing

Once you have stored, the deployed address of the Consumer Contract and set the value in the "Configure Client" section of the deployed Phala Oracle, you will now have a basic boilerplate example of how to connect your Polygon dApp to a Phala Oracle Template. Execute a new requests and check if your configuration is correct like below:

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GETTING_STARTED.md

GETTING_STARTED.md

Connect Phala's Oracle to EVM Consumer Contract

Table of Contents

Overview

Prerequisites

Environment Variables:

Getting Started

Create a Phala Profile

Option 1: Export Polkadot account as json file

Option 2: Set mnemonic phrase to `POLKADOT_WALLET_SURI`

Testing Locally

Test Default Phat Contract Locally

Testing Default Phat Contract with Local Hardhat Node

Deployment

Install Dependencies & Compile Contracts

Deploy to Polygon Mumbai Testnet

(Optional) Verify Contract on Polygon Mumbai Testnet

Deploy Phat Contract to PoC5 Testnet

Interact with Consumer Contract on Polygon Mumbai

Update Phat Contract on Phala PoC5 Testnet

Deploy to Polygon Mainnet

(Optional) Verify Contract on Polygon Mainnet

Deploy Phat Contract to Phala Mainnet

Interact with Consumer Contract on Polygon Mainnet

Update Phat Contract on Phala Mainnet

Closing

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GETTING_STARTED.md

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GETTING_STARTED.md

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Connect Phala's Oracle to EVM Consumer Contract

Table of Contents

Overview

Prerequisites

Environment Variables:

Getting Started

Create a Phala Profile

Option 1: Export Polkadot account as json file

Option 2: Set mnemonic phrase to POLKADOT_WALLET_SURI

Testing Locally

Test Default Phat Contract Locally

Testing Default Phat Contract with Local Hardhat Node

Deployment

Install Dependencies & Compile Contracts

Deploy to Polygon Mumbai Testnet

(Optional) Verify Contract on Polygon Mumbai Testnet

Deploy Phat Contract to PoC5 Testnet

Interact with Consumer Contract on Polygon Mumbai

Update Phat Contract on Phala PoC5 Testnet

Deploy to Polygon Mainnet

(Optional) Verify Contract on Polygon Mainnet

Deploy Phat Contract to Phala Mainnet

Interact with Consumer Contract on Polygon Mainnet

Update Phat Contract on Phala Mainnet

Closing

Option 2: Set mnemonic phrase to `POLKADOT_WALLET_SURI`