Decentralized Storage System

Prerequisite

1. Install Golang (version 1.20.3)

2. Install gRPC

How to Run

1. git clone https://github.com/xuyangm/fabric-samples.git

If the following error is reported:

GnuTLS recv error (-110): The TLS connection was non-properly terminated.

Solve it using:

sudo apt-get install gnutls-bin
git config --global http.sslVerify false
git config --global http.postBuffer 1048576000

2. curl -sSLO https://raw.githubusercontent.com/hyperledger/fabric/main/scripts/install-fabric.sh && chmod +x install-fabric.sh

3. ./install-fabric.sh b d (fabric-version: 2.5.0 fabric-ca-version: 1.5.6)

4. cd fabric-samples/test-network

5. ./network.sh up createChannel -c mychannel -ca

6. ./network.sh deployCC -ccn basic -ccp ../asset-transfer-basic/chaincode-go/ -ccl go

7. cd ../asset-transfer-basic/my-application/

8. go mod init

9. go mod tidy

10. go build boost.go

11. ./boost (use ./boost -h to see help message)

12. Build applications:

go build chunk_storage_service.go
go build file_partition_service.go storage_object.go
go build store_file.go
go build request_file.go storage_object.go

13. Start chunk_storage_service and file_partition_service respectively.
    Terminal 1 (Use ./chunk_storage_service -h to see help):

./chunk_storage_service

Terminal 2 (Use ./file_partition_service -h to see help):

./file_partition_service

14. To store a file (Use ./store_file -h to see help):

./store_file

The file hash will be shown on the terminal. The chunks are stored in the folders named "memory1" and "memory2".

15. To request a file (Use ./request_file -h to see help):

./request_file -hash="REPLACE_WITH_THE_ACTUAL_FILE_HASH"

The output is stored as a file named "out".

16. Stop network:

cd ../../test-network
./network.sh down

17. Quick test:

./file_partition_service
./chunk_storage_service -port=":50052"
./chunk_storage_service -port=":50053"
./chunk_storage_service -port=":50054"
./store_file
./request_file -hash="xxx"
diff in out