truffle-artifactor (formerly ether-pudding)

This package saves contract artifacts into into Javascript files that can be require'd. i.e.,

var artifactor = require("@shyftnetwork/shyft_truffle-artifactor");
artifactor.save({/*...*/}, "./MyContract.sol.js") // => a promise

// Later...
var MyContract = require("./MyContract.sol.js");
MyContract.setProvider(myWeb3Provider);
MyContract.deployed().then(function(instance) {
  return instance.doStuff(); // <-- matches the doStuff() function within MyContract.sol.
}).then(function(result) {
  // We just made a transaction, and it's been mined!
  // We're given transaction hash, logs (events) and receipt for further processing.
  console.log(result.tx, result.logs, result.receipt);
});

👏

Features

• Manages contract ABIs, binaries and deployed addresses, so you don't have to.
• Packages up build artifacts into .sol.js files, which can then be included in your project with a simple require.
• Includes multiple versions of the same contract in a single package, automatically detecting which artifacts to use based on the network version (more on this below).
• Manages library addresses for linked libraries.
• Manages events, making them available on a per-transaction basis (no more event.watch()!)

The artifactor uses truffle-contract, which provides features above and beyond web3:

• Synchronized transactions for better control flow: transactions won't be considered finished until you're guaranteed they've been mined.
• Promises. No more callback hell. Works well with ES6 and async/await.
• Default values for transactions, like from address or gas.
• Returning logs, transaction receipt and transaction hash of every synchronized transaction.

Install

$ npm install truffle-artifactor

Example

Here, we'll generate a .sol.js files given a JSON object like truffle-schema. This will give us a file which we can later require into other projects and contexts.

var artifactor = require("@shyftnetwork/shyft_truffle-artifactor");

// See truffle-schema for more info: https://github.com/trufflesuite/truffle-schema
var contract_data = {
  abi: ...,              // Array; required.
  unlinked_binary: "..." // String; optional.
  address: "..."         // String; optional.
};

artifactor.save(contract_data, "./MyContract.sol.js").then(function() {
  // The file ./MyContract.sol.js now exists, which you can
  // import into your project like any other Javascript file.
});

API

artifactor.save(options, filename[, extra_options])

Save contract data as a .sol.js file. Returns a Promise.

• options: Object. Data that represents this contract:

  {
    contract_name: "MyContract",  // String; optional. Defaults to "Contract"
    abi: ...,                     // Array; required.  Application binary interface.
    unlinked_binary: "...",       // String; optional. Binary without resolve library links.
    address: "...",               // String; optional. Deployed address of contract.
    network_id: "...",            // String; optional. ID of network being saved within abstraction.
    default_network: "..."        // String; optional. ID of default network this abstraction should use.
  }

  Note: save() will also accept an already require'd contract object. i.e.,

  var MyContract = require("./path/to/MyContract.sol.js");
  
  artifactor.save(MyContract, ...).then(...);

  In this case, you can use the extra_options parameter to specify options that aren't managed by the contract abstraction itself.

• filename: Path to save contract file.

• extra_options: Object. Used if you need to specify other options within a separate object, for instance, when a contract abstraction is passed instead of an options object.

artifactor.saveAll(contracts, directory, options)

Save many contracts to the filesystem at once. Returns a Promise.

• contracts: Object. Keys are the contract names and the values are contract_data objects, as in the save() function above:

  {
    "MyContract": {
      "abi": ...,
      "unlinked_binary": ...
    }
    "AnotherContract": {
      // ...
    }
  }

• directory: String. Destination directory. Files will be saved via <contract_name>.sol.js within that directory.

• options: Object. Same options listed in save() above.

artifactor.generate(options, networks)

Generate the source code that populates the .sol.js file. Returns a String.

• options: Object. Subset of options listed in the save() function above. Expects:

  {
    abi: ...,
    unlinked_binary: ...
  }

• networks: Object. Contains the information about this contract for each network, keyed by the network id.

  {
    "1": {        // live network
      "address": ...
    },
    "2": {        // morden network
      "address": ...
    },
    "1337": {     // private network
      "address": ...
    }
  }

Running Tests

$ npm test

License

MIT