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English | 中文

BUMO Blockchain Manual Doc

Compile

Linux

BUMO is currently available for Ubuntu, Centos and most of the operating systems. The following demo is based on Ubuntu 14.04 .

  • Dependencies
sudo apt-get install automake
sudo apt-get install autoconf
sudo apt-get install libtool
sudo apt-get install g++
sudo apt-get install libssl-dev
sudo apt-get install cmake
sudo apt-get install libbz2-dev
sudo apt-get install python
sudo apt-get install unzip
  • Compilation
##After the first download of the code, you have to install related dependencies from the server for initializing the development environment.
cd bumo/build/
./install-build-deps-linux.sh
cd ../
make

Executable program dir:bumo/bin

MAC

  • Install the latest version of Xcode and Command Tools(8.0 version or later). You can get it from Apple's website or Apple's app store.
  • Install brew: Get more information here
  • Install dependencies with brew
bash
export HOMEBREW_NO_AUTO_UPDATE=true
brew install automake
brew install autoconf
brew install libtool
brew install cmake
brew install python
brew install m4
brew install wget
  • Compilation
bash
#Downloading the code at the first time, you have to install related dependencies from the server for initializing the development environment.
cd bumo/build/
./install-build-deps-mac.sh
cd ../
make

Temporary executable program dir:bumo/bulid/mac/

Executable program dir:bumo/bin/

Windows

  • Install Visual Studio Ultimate 2013
  • Compile buchain\build\win32\Bumo.vs12.sln with VS, then get the executable program in the dir bumo\build\win32\dbin
  • After the first download of the code, you have to install related dependencies from the server to initialize the development environment. Enter the dir build, and double click the following:install-build-deps-win32.bat.

Deployment

The deployment on Windows is almost identical to Linux. (Subject to Linux)

Installation on Linux

Use compile mode deploy

cd bumo
make install

Install under /usr/local/buchain/

Use archive packet deploy

Extract files

Copy buchain-1.0.0.x-linux-x64.tar.gz to /usr/local/

cd /usr/local/
//Note the name of the actual version of the package 1.0.0.x.
tar xzvf buchain-1.0.0.x-linux-x64.tar.gz

Registration service

ln -s /usr/local/buchain/scripts/bumo /etc/init.d/bumo 
ln -s /usr/local/buchain/scripts/bumod /etc/init.d/bumod

Modify startup path

Open ./buchain/scripts/bumo 和 ./buchain/scripts/bumod

Modify install_dir to Buchain's deployment path

install_dir=/usr/local/buchain

Setup startup

#Execute the following commands separately.（level: 1~5）
ln -s -f /etc/init.d/bumod /etc/rc1.d/S99bumod 
ln -s -f /etc/init.d/bumod /etc/rc2.d/S99bumod 
ln -s -f /etc/init.d/bumod /etc/rc3.d/S99bumod 
ln -s -f /etc/init.d/bumod /etc/rc4.d/S99bumod 
ln -s -f /etc/init.d/bumod /etc/rc5.d/S99bumod

Add the following command at the end of the /etc/rc.local file.

/etc/init.d/bumod start

Save and add executable permissions.：

chmod +x /etc/rc.local

Catalog Structure

Catalog Description
bin Executable program（Compiled bumo exe）
jslib Third-party js libraries
config Configuration profile, including bumo.json
data Warehouse of ledger data
script Activate script
log Running log

Switch to Test Network

Switch runtime environment of BUMO manually:

  1. Stop bumo program
    service bumo stop
  1. Replace configuration profile
    cd /usr/local/buchain/config/
    #Copy the target configuration profile
    cp bumo-testnet.json bumo.json  

    #About configuration profile
    bumo.json           ##debugging environment is default
    bumo-mainnet.json   ##nonactivated, configuration profile of main network
    bumo-testnet.json   ##configuration profile of test network
  1. Drop database and restart service
    cd ../
    ./bin/bumo --dropdb
    service bumo start

Operation

    service bumo start

Operating Status

    service bumo status

Configuration

config.json

Data Storage

    "db":{
		"account_path": "data/account.db", //store account data
		"ledger_path": "data/ledger.db", //store block data
		"keyvalue_path": "data/keyvalue.db" //store consensus data
    }

Network Communication between Nodes

    "p2p":{
        "network_id":10000,//Network ID, to distinguish test network from main network
        //consensu network
        "consensus_network":{
            "heartbeat_interval":60,
            "listen_port":16001,//listened port
            "target_peer_connection":50,
            "known_peers":[
                "127.0.0.1:16001"//link known nodes
            ]
        }
    }

WEB API Configuration

    "webserver":{
        "listen_addresses":"0.0.0.0:16002"
    }

WebSocket API Configuration

    "wsserver":{
        "listen_address":"0.0.0.0:16003"
    }

Block Configuration

    "ledger":{
        "validation_address":"buQBwe7LZYCYHfxiEGb1RE9XC9kN2qrGXWCY",//validation node's address( NO NEED to configurate for synchronized nodes or wallets)
        "validation_private_key": "66932f19d5be465ea9e7cfcb3ea7326d81953b9f99bc39ddb437b5367937f234b866695e1aae9be4bae27317c9987f80be882ae3d2535d4586deb3645ecd7e54", //validation node's private key( NO NEED to configurate for synchronized nodes or wallets)
        "max_trans_per_ledger":1000,  //the maximum number of transactions per block.
        "tx_pool":{
            "queue_limit":10240,
            "queue_per_account_txs_limit":64
        }
    }

Initial Block

   "genesis": {
        "account": "buQs9npaCq9mNFZG18qu88ZcmXYqd6bqpTU3", //account of initial block
        "slogan" : "a new era of value",
        "fees": {
            "base_reserve": 10000000,  // based reserve of the account
            "byte_fee": 1000           //byte fee
        },
        "validators": ["buQBwe7LZYCYHfxiEGb1RE9XC9kN2qrGXWCY"] //validated nodes list
    }
In the same blockchain, the configuration of `genesis` should keep consistent.

Log Configuration

    "logger":{
        "path":"log/bumo.log", // log catalog
        "dest":"FILE|STDOUT|STDERR", //classification of output files
        "level":"TRACE|INFO|WARNING|ERROR|FATAL",//log level
        "time_capacity":1,
        "size_capacity":10,
        "expire_days":10
    }

Multi-nodes Cluster Configuration

  • Example for running multi-nodes on a single blockchain (mostly alter p2p,validation,ledgersections ):

Network Communication between Nodes

  • config.p2p.consensus_network.known_peers // add the IP and address of other nodes

Consensus Parameter

  • validators //add the validated address of other nodes
  • address and node_private_key should be in pairs

Block Parameter

  • config.ledger.genesis_account is the initial account. In the same blockchain, the configuration of genesis_account should be kept consistent.

Note: Ensure the initial data of every node is consistent before running. Or else the consensus for creating blocks would fail.

Synchronizing Nodes

  • The difference on configuration between synchronized node and validation node is that you do not need to add validation address in consensus configuration of synchronized node.
Encrypting Data

All the private information of configuration profile is encrypted, and the decryption key is hard-coded in the program. To decrypt the information, you have to get the key in clear format, then transform the key as following:

  • command ./bin/bumo --aes-crypto [key]
[root@localhost buchain]# ./bin/bumo --aes-crypto root 
e2ba44bf0b27f0acbe7b5857e3bc6348
  • The information of configuration needs to be encrypted
name description
config.validation.node_private_key private key of validation node

Operation and Maintenance

Service Start and Stop

Start    :service bumo start
Stop    :service bumo stop
Running status:service bumo status

Get Modules Status

[root@centos7x64-201 ~]# curl 127.0.0.1:19333/getModulesStatus
{
    "glue_manager":{
        "cache_topic_size":0,
        "ledger_upgrade":{
            "current_states":null,
            "local_state":null
        },
        "system":{
            "current_time":"2017-07-20 10:32:22", //current time
            "process_uptime":"2017-07-20 09:35:06", //starting time of bumo 
            "uptime":"2017-05-14 23:51:04"
        },
        "time":"0 ms",
        "transaction_size":0
    },
    "keyvalue_db":Object{...},
    "ledger_db":Object{...},
    "ledger_manager":{
        "account_count":2316,  //count of accounts
        "hash_type":"sha256",
        "ledger_sequence":12187,
        "time":"0 ms",
        "tx_count":1185   //count of transactions
    },
    "peer_manager":Object{...},
    "web server":Object{...},

Get Account Information

[root@centos7x64-201~]#curl 127.0.0.1:19333/getAccount?address=a0024111d1cc90ac8ee0abd5f957e08e3e1b442b581e88
{
  "error_code": 0,
  "result": {
    "address": "a0024111d1cc90ac8ee0abd5f957e08e3e1b442b581e88",
    "assets": null,
    "assets_hash": "ad67d57ae19de8068dbcd47282146bd553fe9f684c57c8c114453863ee41abc3",
    "contract": null,
    "metadatas": null,
    "priv": {
      "master_weight": 1,
      "thresholds": {
        "tx_threshold": 1
      }
    },
    "storage_hash": "ad67d57ae19de8068dbcd47282146bd553fe9f684c57c8c114453863ee41abc3"
  }
} [root@centos7x64-201 ~]#

Drop Database

buchain/bin/bumo --dropdb

Create Hard Fork

buchain/bin/bumo --create-hardfork
buchain/bin/bumo --clear-consensus-status

  • As the node has joined an existing blockchain that would like to run a standalone blockchain, a hard fork can be created with the commands above. After hard fork, there is only one validation node(local node)on the new blockchain.

  • After executing the hard fork command, you will get a hash as following:

Create hard fork ledger successful, seq(20), consensus value hash(**7aa332f05748e6ce9ad3d059c959a50675109bcaf0a4ba2c5c6adc6418960197**)
  • In the local node or synchronized node, add the hash with parameter hardfork_points into bumo.json.
    "ledger": {
       	"genesis_account": "buQs9npaCq9mNFZG18qu88ZcmXYqd6bqpTU3",
        "max_trans_per_ledger": 1000,
        "hardfork_points" : 
        [
        	"7aa332f05748e6ce9ad3d059c959a50675109bcaf0a4ba2c5c6adc6418960197"
        ]
    },
  • Start service

Data Storage Dir

buchain/data is the default dir to store BUMO blockchain data. You can change the dir as you need in the configuration profile.