Hedera local services-node
The TL;DR
git clone https://github.com/three-Vs/dockerized-hedera-services.git
docker-compose up
This repo provides the minimum required services to deploy a hedera network and have it ready to answer API calls. It's topology consists of 3 nodes and a postgres instance. It assumes that the services-node docker image has already being build and is available either locally or at a known, accessible location of which the image prefix can be set via the REGISTRY_PREFIX variable inside the .env file.
Speaking of the .env file, a .env.sample file is included and can be used as a template to create the .env file.
If the .env file is not provided, the stack defaults to targeting the latest available hedera-services release tag.
Note: this setup has been stripped bare from the original hedera-services repo and should be kept updated as seen fit. The best time to build/update this repo would be when a new stable tag is released upstream.
Deployment
Simply doing a docker-compose up makes the 3 nodes accessible locally (eg localhost) at ports 50211, 50212 and 50213. The stack makes use of this public docker-hub image.
Making use of it
Just fire up your SDK client of choice and configure it to use the network like so:
JS
const client = Client.forNetwork({
'127.0.0.1:50211': new AccountId(3),
'127.0.0.1:50212': new AccountId(4),
'127.0.0.1:50213': new AccountId(5)
});Java
Map<String, AccountId> nodes = new HashMap<>();
nodes.put("127.0.0.1:50211" ,AccountId.fromString("0.0.3"));
nodes.put("127.0.0.1:50212" ,AccountId.fromString("0.0.4"));
nodes.put("127.0.0.1:50213" ,AccountId.fromString("0.0.5"));
Client client = Client.forNetwork(nodes);What's left now is for you to call any of the available hedera-services such as querying for the account balance or uploading a file using hedera's file service (HFS).
By the way, there is a pre-registered account inside the network with 50 000 000 000 ℏ available. The credentials for it (for using it as an operator) are:
AccountId : 0.0.2
PrivateKey : 91132178e72057a1d7528025956fe39b0b847f200ab59b2fdd367017f3087137