Embark is a framework that allows you to easily develop and deploy Decentralized Applications (DApps).
A Decentralized Application is a serverless html5 application that uses one or more decentralized technologies.
Embark currently integrates with EVM blockchains (Ethereum), Decentralized Storages (IPFS), and Decentralized communication platforms (Whisper and Orbit). Swarm is supported for deployment.
With Embark you can:
- Automatically deploy contracts and make them available in your JS code. Embark watches for changes, and if you update a contract, Embark will automatically redeploy the contracts (if needed) and the dapp.
- Contracts are available in JS with Promises.
- Keep track of deployed contracts; deploy only when truly needed.
- Manage different chains (e.g testnet, private net, livenet)
- Easily manage complex systems of interdependent contracts.
Decentralized Storage (IPFS)
- Easily Store & Retrieve Data on the DApp through EmbarkJS. Including uploading and retrieving files.
- Deploy the full application to IPFS or Swarm.
Decentralized Communication (Whisper, Orbit)
- Easily send/receive messages through channels in P2P through Whisper or Orbit.
- Integrate with any web technology including React, Foundation, etc..
- Use any build pipeline or tool you wish, including grunt, gulp and webpack.
3.1.1 Node Version Manager
curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash nvm --version ## Check installation
3.1.2 Install Node Long Term Support
nvm install --lts nvm use --lts
3.2.1 Install embark
$ npm -g install embark --python=/usr/bin/python2.7 $ embark --version #to check installation
Python v2.5<v<v3.0 is needed. If your default python is not appropriate you may set a different path using –python
3.2.2 With Ethereum Support
If you want to use Embark with Ethereum and want embark to run a node for you (with the embark blockchain command), then you need to install Go-Ethrereum 1.6.7 or higher.
$ brew tap ethereum/ethereum $ brew install ethereum
Go Ethereum will be installed in /usr/local/Cellar
3.2.3 With IPFS support
To use IPFS you need first to install a IPFS node and run it. There two available, go-ipfs and js-ipfs. We will go with go-ipfs.
- Get the tarball
- Untar and install it. Ipfs binary will be moved to /usr/local
tar -xvzf ./go-ipfs_v0.4.17_darwin-amd64.tar.gz cd go-ipfs ./install.sh /usr/local/bin/ipfs #check installation
More on IPFS here : Getting started with IPFS
Notes: Once installed and setup you will need to make sure the headers are setup properly for your app.
$ ipfs config --json API.HTTPHeaders.Access-Control-Allow-Origin "[\"http://example.com\"]" $ ipfs config --json API.HTTPHeaders.Access-Control-Allow-Credentials "[\"true\"]" $ ipfs config --json API.HTTPHeaders.Access-Control-Allow-Methods "[\"PUT\", \"POST\", \"GET\"]"
TO Be CONTINUED
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