ethereum-console

ethereum-console

Commandline console for Ethereum nodes.

ethconsole connects to an Ethereum node running in the background (tested with eth and geth) via IPC and provides an interactive javascript console containing the web3 object with admin additions.

Note that the admin additions are not yet official and may change any time.

Installation / Usage

# npm install -g ethereum-console
npm http GET https://registry.npmjs.org/ethereum-console
npm http 304 https://registry.npmjs.org/ethereum-console
npm http GET https://registry.npmjs.org/web3
...
# ethconsole
Connecting to node at /home/user/.ethereum/geth.ipc
Connection successful.
Current block number: 1083107
Entering interactive mode.
> web3.admin.getNodeInfo(function(err, info) { console.log(info.name); } )
eth/v1.2.0-2192c209/Debug-Linux/clang/int

Usage of the Test Interface

ethconsole provides access to the cpp-ethereum test interface, which can be used to test smart contracts that depend on timing and blocks being mined.

# Install the development version of cpp-ethereum on Ubuntu:
# sudo add-apt-repository -y ppa:ethereum/ethereum-qt
# sudo add-apt-repository -y ppa:ethereum/ethereum
# sudo add-apt-repository -y ppa:ethereum/ethereum-dev
# sudo apt-get -y update
# sudo apt-get -y install eth
#
# Start eth in test-mode using data directory /tmp/test 
$ eth --test -d /tmp/test &
# Wait for it to start up...
# Run the example:
$ ethconsole /tmp/test/geth.ipc example.js

These testing interfaces exist in cpp-ethereum:

web3.test.setChainParams({}, cb(err, bool))
    set chain parameters using the json chain description
    you can use the function chainParams in utils.js to create such a description
web3.test.mineBlocks(x, cb(err, bool))
    start mining and stop again after exactly x blocks
web3.test.modifyTimestamp(x, cb(err, bool))
    set the timestamp of the current block to x
web3.test.rewindToBlock(x, cb(err, bool))
    rewind the blockchain to block number x
web3.test.addBlock(x, cb(err, bool)
    inject an RLP-encoded block