MSTDB

Mstdb is a semantic blockchain system based on go-ethereum(v1.8).

Requirements

On Linux ( > Ubuntu 16.04)

Go 1.12 or later, close the go module

a C compiler (gcc or others)

Building the source

Before the source code is compiled, rename the ETHMST to github.com/ethereum/go-ethereum

mv ETHMST/ github.com/ethereum/go-ethereum

Once the dependencies are installed, run

cd github.com/ethereum/go-ethereum
make geth
cd build/bin

Running geth

Create a file named genesis.json and write the following content

{
   "config": {
        "chainId": 15,
        "homesteadBlock": 0,
        "eip150Block": 0,
        "eip155Block": 0
    },
    "coinbase" : "0x0000000000000000000000000000000000000000",
    "difficulty" : "0x00400",
    "extraData" : "",
    "gasLimit" : "0xffffffff",
    "nonce" : "0x0000000000000042",
    "mixhash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
    "parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
    "timestamp" : "0x00",
    "alloc": { }
}

Initialize the genesis block

./geth --datadir data0 init genesis.json

Start a private chain and enter the geth console

./geth --datadir data0 --networkid 1108 console 

or write the log information into a file

./geth --datadir data0 --networkid 1108 console 2>geth.log

Create a new account:

personal.newAccount('123') 
//123 is the password of the account

Start mining

miner.start()

//if you want to mine only one block
miner.start(1);admin.sleepBlocks(1);miner.stop() 

Before send the transaction, the account must be unlocked

personal.unlockAccount(eth.accounts[0])

Send a transaction, while the filename and key[] are the meta-data from off-chain data

eth.sendTransaction({from:eth.accounts[0],to:"0xc9194a8ea28d76389af4c7e9c81222386a6ab47a",value:1000000,filename:"math",key:["a","b","c"]})

Search a block by key words

eth.search(["d","c"])

Other console functions please search in https://web3js.readthedocs.io/en/v1.2.0/

Running geth with rpc model

Start a private chain and add rpc parameter

./geth --datadir data0 --networkid 1108 --rpc --rpcaddr 0.0.0.0 --rpcport 8545 --rpcapi admin,miner,db,eth,net,web3,personal 2>geth.log

If you want to use the console at the same time, add the console parameter

./geth --datadir data0 --networkid 1108 --rpc --rpcaddr 0.0.0.0 --rpcport 8545 --rpcapi admin,miner,db,eth,net,web3,personal console 2>geth.log

If the console stops you sending a transaction through http, add the unlock parameter

 ./geth --datadir data0 --networkid 1108 --rpc --rpcaddr 0.0.0.0 --rpcport 8545 --rpcapi admin,miner,db,eth,net,web3,personal console --allow-insecure-unlock 2>geth.log

Send a transaction

curl -X POST "localhost:8545" -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"eth_sendTransaction","params":[{
  "from": "0xa9cf6de0905c2bd58f48e0b13a73b89eef95e0e7",
  "to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
  "value": "0x988090",
  "filename":"haha",
  "key":["a","b"]
}],"id":1}'

Search a block by key words

curl -X POST "localhost:8545" -H "Content-Type:application/json" --data '{"jsonrpc":"2.0","method":"eth_search","params":[["b"]],"id":11}'

Other json-rpc functions please search in https://eth.wiki/json-rpc/API