Blockchian Demo 2

This repository contains a PoC of Anchor API. This PoC has following endpoints:

• POST /data_anchors - Create a new data anchor
• GET - /data_anchors /{anchorId} - Get an anchor by its identifier
• PUT - /data_anchors /{anchorId} - Update an anchor by its identifier

API documentation can be found here Swagger

For this PoC Anchor API you can use one of the following blockchain network to store anchors using smart contract.

• Quorum
• Ethereum (has issue with run Out of Gas)

To run this PoC you will need following:

• an AWS account (We have created an AWS account for the PoC, please contact to get the AWS Access Key ID and AWS Secret Access Key in case you need)
• a configured AWS CLI: In order for Terraform to run operations on your behalf, you must install and configure the AWS CLI tool. To install the AWS CLI, follow these instructions or choose a package manager based on your operating system.
• AWS IAM Authenticator: To install follow these instructions
• A Kubernetes cluster with Kubernetes v1.15
• kubectl: To install follow these instructions
• wget (required for the terraform eks module): Install based on you OS
• helm: The package manager for Kubernetes
• A Quorum / Ethereum network deployed in the Kubernetes cluster

After you've installed the AWS CLI, configure it by running aws configure. When prompted, enter your AWS Access Key ID, Secret Access Key, region and output format.

aws configure
AWS Access Key ID [None]: YOUR_AWS_ACCESS_KEY_ID
AWS Secret Access Key [None]: YOUR_AWS_SECRET_ACCESS_KEY
Default region name [None]: YOUR_AWS_REGION
Default output format [None]: json

If you don't have an AWS Access Credentials, create your AWS Access Key ID and Secret Access Key by navigating to your service credentials in the IAM service on AWS. Click "Create access key" here and download the file. This file contains your access credentials. Your default region can be found in the AWS Web Management Console beside your username. Select the region drop down to find the region name (eg. us-east-1) corresponding with your location.

Anchor API with Quorum

Setup a Kubernetes cluster

• Choose our pl-cluster2

aws eks --region eu-west-2 update-kubeconfig --name pl-cluster2

• If you want to deploy your own Kubernetes cluster you can follow this guideline

Deploy Quorum network

Clone our blockchain2-demo (this) repo then follow below steps:

Run following command in blockchain2-demo directory one by one

kubectl apply -f quorum_network/k8s
kubectl apply -f quorum_network/k8s/deployments

Run following command to list all the services that are running.

kubectl get services

Above command will output something like below, and please note down ClusterIP of quorum-node1

NAME           TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)                                          AGE
kubernetes     ClusterIP   172.20.0.1       <none>        443/TCP                                          20h
quorum-node1   ClusterIP   172.20.152.239   <none>        9001/TCP,9080/TCP,8545/TCP,30303/TCP,50401/TCP   97s
quorum-node2   ClusterIP   172.20.105.236   <none>        9001/TCP,9080/TCP,8545/TCP,30303/TCP,50401/TCP   97s
quorum-node3   ClusterIP   172.20.200.7     <none>        9001/TCP,9080/TCP,8545/TCP,30303/TCP,50401/TCP   97s
quorum-node4   ClusterIP   172.20.36.220    <none>        9001/TCP,9080/TCP,8545/TCP,30303/TCP,50401/TCP   97s

Deploy Anchor API

Clone our blockchain2-demo (this) repo then follow below steps:

Run following command in blockchain2-demo directory to deploy the Anchor API which will use Quorum network. Use ClusterIP of quorum-node1 as host part of env.web3_provider. Use 0x66d66805E29EaB59901f8B7c4CAE0E38aF31cb0e as value of env.web3_account

helm install --set env.web3_provider=http://172.20.152.239:8545 --set env.web3_account=0x66d66805E29EaB59901f8B7c4CAE0E38aF31cb0e anchor-api-quorum anchor_api/helm-charts/

Anchor API with Ethereum

Setup a Kubernetes cluster

• Choose our pl-cluster3

aws eks --region eu-west-2 update-kubeconfig --name pl-cluster3

• If you want to deploy your own Kubernetes cluster you can follow this guideline

Deploy Ethereum network

Clone our blockchain3-demo repo then follow below steps:

Run following command in blockchain3-demo directory:

helm install my-eth-pharmaledger stable/ethereum -f values.yaml

Run following command to list all the services that are running.

kubectl get services

Above command will output something like below, and please note down ClusterIP of *-ethereum-geth-tx

kubernetes                              ClusterIP      172.20.0.1       <none>                                                                    443/TCP                         12h
my-eth-pharmaledger-ethereum-bootnode   ClusterIP      None             <none>                                                                    30301/UDP,80/TCP                135m
my-eth-pharmaledger-ethereum-ethstats   LoadBalancer   172.20.56.122    a54fc4da99005430baae72cf5bfb0c70-739739716.eu-west-2.elb.amazonaws.com    80:31661/TCP                    135m
my-eth-pharmaledger-ethereum-geth-tx    ClusterIP      172.20.217.232   <none>                                                                    8545/TCP,8546/TCP               135m

Deploy Anchor API

Clone our blockchain2-demo (this) repo then follow below steps:

Run following command in blockchain2-demo directory to deploy the Anchor API which will use Ethereum network. Use ClusterIP of *-ethereum-geth-tx as host part of env.web3_provider. Use 0x66d66805E29EaB59901f8B7c4CAE0E38aF31cb0e as value of env.web3_account. Use lst7upm as value of env.web3_password.

helm install --set env.web3_provider=http://172.20.217.232:8545 --set env.web3_account=0x3852360755845889E675C4b683f3F26bf8f12aeA --set env.web3_password=lst7upm anchor-api-ethereum anchor_api/helm-charts/