Hyperledger Explorer

Hyperledger Explorer is a simple, powerful, easy-to-use, highly maintainable, open source browser for viewing activity on the underlying blockchain network. Users have the ability to configure & build Hyperledger Explorer natively on macOS and Ubuntu.

Release Notes
Directory Structure
Requirements
Clone Repository
Database Setup
Fabric Network Setup
Fabric Configure Hyperledger Explorer
Composer Configure Hyperledger Explorer
Cello Configure Hyperledger Explorer
Build Hyperledger Explorer
Run Hyperledger Explorer
Hyperledger Explorer Swagger
Logs
Troubleshooting
License

Release Notes

Directory Structure

├── app            	 Application backend root
	├── explorer     Explorer configuration, REST API
	├── persistence  Persistence layer
	├── platform     Platforms
		├── fabric   Explorer API (Hyperledger Fabric)
	├── test         Application backend test
├── client         	 Web UI
	├── public       Assets
	├── src          Front end source code
		├── components		React framework
		├── services	  	Request library for API calls
		├── state		Redux framework
		├── static       	Custom and Assets

Requirements

Following are the software dependencies required to install and run hyperledger explorer

nodejs 8.11.x (Note that v9.x is not yet supported)
PostgreSQL 9.5 or greater
Jq [https://stedolan.github.io/jq/]

Hyperledger Explorer works with Hyperledger Fabric 1.1. Install the following software dependencies to manage fabric network.

docker 17.06.2-ce [https://www.docker.com/community-edition]
docker-compose 1.14.0 [https://docs.docker.com/compose/]

Clone Repository

Clone this repository to get the latest using the following command.

git clone https://github.com/hyperledger/blockchain-explorer.git.
cd blockchain-explorer.

Database Setup

cd blockchain-explorer/app/persistence/postgreSQL/db
Modify pgconfig.json to update postgresql properties
- pg host, port, database, username, password details.

 "pg": {
		"host": "127.0.0.1",
		"port": "5432",
		"database": "fabricexplorer",
		"username": "hppoc",
		"passwd": "password"
	}

**Important repeat after every git pull (in some case you may need to apply permission to db/ directory, from blockchain-explorer/app/persistence/postgreSQL run: chmod -R 775 db/ )

Run create database script.

cd blockchain-explorer/app/persistence/postgreSQL/db
./createdb.sh

Run db status commands. Connect to PostgreSQL database.

Ubuntu

sudo -u postgres psql

macOS

psql postgres
\l view created fabricexplorer database
\d view created tables

Fabric Network Setup

Setup your own network using Build your network tutorial from Fabric. Once you setup the network, please modify the values in /blockchain-explorer/app/platform/fabric/config.json accordingly.

Fabric Configure Hyperledger Explorer

On another terminal.

cd blockchain-explorer/app/platform/fabric
Modify config.json to update network-config.
- Change "fabric-path" to your fabric network path, example: "/home/user1/workspace/fabric-samples" for the following keys: "tls_cacerts", "key", "cert".
- Final path for key "tls_cacerts" will be: "/home/user1/workspace/fabric-samples/first-network/crypto-config/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt".
Modify "syncStartDate" to filter data by block timestamp
Modify "channel" to your default channel

Hyperledger Composer Setup

Setup your own network using Composer Build your network from Hyperledger Composer. Once you setup the network, please modify the values in /blockchain-explorer/app/platform/fabric/config.json accordingly.

Composer Configure Hyperledger Explorer

On another terminal.

cd blockchain-explorer/app/platform/fabric
Modify config.json to update network-config.
- Change "fabric-path" to your composer network path,
- Configure the Hyperledger composer based on this link CONFIG-COMPOSER-HLEXPLORER.md
Modify "syncStartDate" to filter data by block timestamp
Modify "channel" to your default channel

If you are connecting to a non TLS fabric peer, please modify the protocol (grpcs->grpc) and port (9051-> 9050) in the peer url and remove the tls_cacerts. Depending on this key, the application decides whether to go TLS or non TLS route.

Hyperledger Cello Setup

Setup your fabric network using Cello Build your network from Hyperledger Cello. Once you setup the network, please modify the values in /blockchain-explorer/app/platform/fabric/config.json accordingly.

Cello Configure Hyperledger Explorer

On another terminal.

cd blockchain-explorer/app/platform/fabric
Modify config.json to update network-config.
- Change "fabric-path" to your cello network path,
- Configure the Hyperledger cello based on this link CONFIG-CELLO-HLEXPLORER.md
Modify "syncStartDate" to filter data by block timestamp
Modify "channel" to your default channel

Build Hyperledger Explorer

**Important repeat after every git pull

On another terminal.

cd blockchain-explorer
npm install
cd blockchain-explorer/app/test
npm install
npm run test
cd client/
npm install
npm test -- -u --coverage
npm run build

Run Hyperledger Explorer

From new terminal.

cd blockchain-explorer/
./start.sh (it will have the backend up).
Launch the URL http://localhost:8080 on a browser.
./stop.sh (it will stop the node server).
If the Hyperledger Explorer was used previously in your browser be sure to clear the cache before relaunching.

Run Hyperledger Explorer using Docker

There is also an automated deployment of the Hyperledger Explorer available via docker having next assumptions:

BASH installed
Docker is installed on deployment machine.

Non interactive deployment assumptions

By default, deployment script uses 192.168.10.0/24 virtual network, and needs to be available with no overlapping IPs (this means you can't have physical computers on that network nor other docker containers running). In case of overlappings, edit the script and change target network and container targets IPs.
By default both services (fronted and database) will run on same machine, but script modifications is allowed to run on separate machines just changing target DB IP on frontend container.
Crypto material is correctly loaded under examples/$network/crypto
Fabric network configuration is correctly set under examples/$network/config.json

Steps to deploy using Docker

From new terminal.

cd blockchain-explorer/
Create a new folder (lets call it dockerConfig) to store your hyperledger network configuration under examples (mkdir -p ./examples/dockerConfig)
Save your hyperledger network configuration under examples/dockerConfig/config.json.
Save your hyperledger network certs data under examples/dockerConfig/crypto.
Run the explorer pointing to previously created folder.

From new terminal.

cd blockchain-explorer/
./deploy_explorer.sh dockerConfig (it will automatically deploy both database and frontend apps using Hyperledger Fabric network configuration stored under examples/dockerConfig folder)