Block explorer for Hyperledger Fabric

Configure config.yaml (it's main config of the Fabex) and connection-profile.yaml (Hyperledger Fabric connection profile)
Install and start database (MongoDB or CassandraDB)

If you choose Mongo:
1. set initial user name and password in db/mongo-compose/docker-compose.yaml
2. start container:
```
make mongo
```
If you choose Cassandra:
```
make cassandra
```
(OPTIONAL) Start your Fabric blockchain network or sample test network with
```
make fabric-test
```

You can start Fabex as standalone microservice with Cassandra blocks storage:

`./fabex -task=grpc -configpath=configs -configname=config -enrolluser=true -db=cassandra`

or with Mongo storage

`./fabex -task=grpc -configpath=configs -configname=config -enrolluser=true -db=mongo`

Use fabex.proto as service contract.

Example of GRPC client implementation.

Build Fabex executable binary file:

`go build`

Enroll admin user:

`./fabex -enrolluser=true`

Save blocks data to db:

`./fabex -task=explore -configpath=configs -configname=config -db=cassandra`

Also you can start service for fetching blocks in daemon mode:

`./fabex -task=explore -configpath=configs -configname=config -db=cassandra -forever=true`

Get transactions of specific block (chain operation):

`./fabex -task=getblock -blocknum=14 -configpath=configs -configname=config -db=cassandra`

Get all transactions (db operation):

`./fabex -task=getall -configpath=configs -configname=config -db=cassandra`

You can choose database for data saving and retrieving with -db flag (MongoDB or CassandraDB):

`./fabex -task=explore -configpath=configs -configname=config -db=mongo`
`./fabex -task=explore -configpath=configs -configname=config -db=cassandra`

unit tests: make unit-tests

integration tests: make integration-tests

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