pisa-client v0.1.4-connext-beta

PISA Client

A thin client for the PISA API running a http://alpha.pisa.watch:5487.

The PISA contract is currently deployed on Ropsten at 0xA02C7260c0020343040A504Ef24252c120be60b9

The client library supports relay and event triggered appointments. If no event information is provided when generating an appointment request then a relay appointment will be created. See http://alpha.pisa.watch:5487/docs.html for more information on individual parameters

Simple example with ethersjs

Appointments requests must be signed by the PISA customer. A callback that signs a digest with the customer's private key must be provided when generating an appointment request, in this example we use an ethersjs wallet to sign the digest

// metadata info
const userWallet; // an ethersjs wallet
const appointmentId = "0x61f307f9dc16833ff12d511e22a20ac2a4d0adaa2f48292ebad9e0c80a2bb75d";
const nonce = 0;
const startBlock; // current block height just retrieved from a provider
const endBlock = startBlock + 200;

// response info
const responseAddress = "0x81b7e08f65bdf5648606c89998a9cc8164397647";
const responseData = "0x28fbdf0d000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000";
const gasLimit = 100000;
const challengePeriod = 200;

// event info
const eventAddress = "0x9e64b53b935602cd0657343C69Fe200fb3cD05c8";
const topics = ["0x73ea0ff8e52eea08c37acf9b1de68b2f0039fd344d83d2563e2b266b073a93d4", null, "0x0000000000000000000000000000000000000000000000000000000000000001"];

const pisaClient = new PisaClient("http://alpha.pisa.watch:5487", "0xA02C7260c0020343040A504Ef24252c120be60b9");
const receipt = await pisaClient.generateAndExecuteRequest(
    digest => userWallet.signMessage(arrayify(digest)),
    userWallet.address,
    appointmentId,
    nonce,
    startBlock,
    endBlock,
    responseAddress,
    responseData,
    gasLimit,
    challengePeriod,
    eventAddress,
    topics
);