Bluzelle Decentralized DB

A decentralized NoSQL database

Description

Bluzelle is a decentralized database that allows software developers to benefit from three primary features: (1) auto-managed, consensus engine eliminates administrative overhead; (2) blockchain-grade security, data is replicated across geographically dispersed nodes, (3) PBFT data integrity, ensures consensus is the only method by which updates to your database can be accepted as the “truth”. Bluzelle ensures that nobody else can break in or manipulate your data.

Currently, the Bluzelle beta has support for Javascript applications, including node.js.

Programming language: C++

Tags: Database     Nosql     Nodejs     Decentralized     Blockchain    

README

SwarmDB

ABOUT SWARMDB

Bluzelle brings together the sharing economy and token economy. Bluzelle enables people to rent out their computer storage space to earn a token while dApp developers pay with a token to have their data stored and managed in the most efficient way.

Getting started with Docker

If you want to deploy your swarm immediately you can use our docker-compose quickstart instructions:

Install Docker

Docker Installation Guide

1. Setup a local docker-compose swarm with the instructions found here
2. Run docker-compose up in the same directory of your docker-compose.yml. This command will initialize the swarm within your local docker-machine. Full docker-compose documentation can be found here
3. Nodes are available on localhost port 51010-51012
4. Connect a test websocket client
5. Create a node server application using our node.js library
6. CTRL-C to terminate the docker-compose swarm

Getting started building from source

Installation - Ubuntu

CMake (Ver. 3.10 or greater) etc.

On Ubuntu 18.04 and newer, you can simply install via apt.

$ sudo apt-get install cmake 

If your system packages don't have a new enough version, you can install a different CMake into ~/mycmake/ to avoid overwriting your system's cmake.

$ sudo apt-get install curl libcurl4-openssl-dev
$ mkdir -p ~/mycmake
$ curl -L http://cmake.org/files/v3.11/cmake-3.11.0-Linux-x86_64.tar.gz | tar -xz -C ~/mycmake --strip-components=1

You would then use ~/mycmake/bin/cmake .. instead of cmake .. in further instructions.

Protobuf (Ver. 3 or greater) etc.

$ sudo apt-add-repository ppa:maarten-fonville/protobuf
$ sudo apt-get update
$ sudo apt-get install pkg-config protobuf-compiler libprotobuf-dev libsnappy-dev libbz2-dev

ccache (Optional)

If available, cmake will attempt to use ccache (https://ccache.samba.org) to drastically speed up compilation.

$ sudo apt-get install ccache

Git LFS (Optional)

Git LFS is currently being used to speed up builds if available.

$ sudo apt-get install git-lfs
$ git lfs install

Building the Daemon from Command Line Interface (CLI)

Note: Git LFS is used by default. If you do not have it set up, you must build the dependencies by setting BUILD_DEPEND=YES in your cmake call, e.g. cmake .. -DBUILD_DEPEND=YES, and omit the git lfs commands.

Here are the steps to build the Daemon and unit test application from the command line:

$ mkdir build
$ cd build
$ cmake ..
$ git lfs install
$ git lfs pull
$ sudo make install

Deploying the Daemons

The Bluzelle Configuration File

The Bluzelle daemon is configured by setting the properties of a JSON configuration file provided by the user. This file is usually called bluzelle.json and resides in the current working directory. To specify a different configuration file the daemon can be executed with the -c command line argument:

$ swarm -c peer0.json

The configuration file is a JSON format file, as seen in the following example:

{
    "listener_address" : "127.0.0.1",
    "listener_port" : 50000,
    "bootstrap_file" : "/home/isabel/swarmdb/local/nodes/peers.json",
    "debug_logging" : true,
    "log_to_stdout" : true,
    "use_pbft": true,
    "bootstrap_file": "./peers.json",
    "stack" : "testnet-dev"
}

The complete documentation of the options available for this file is given by

$ swarm --help

but the properties likely useful for a minimal swarm are summarized here:

• "bootstrap_file" - path to peers file (see below)
• "debug_logging" - show more log info
• "listener_address" - the ip address that SwarmDB will listen on (this should be "127.0.0.1" unless you are doing something fancy)
• "listener_port" - the port that SwarmDB will listen on (each node running on the same host should use a different port)
• "log_to_stdout" (optional) - log to stdout as well as log file
• "uuid" - the universally unique identifier that this instance of SwarmDB will use to uniquely identify itself. This should be specified if and only if node cryptography is disabled (the default) - otherwise, nodes use their private keys as their identifier.
• "stack" - software stack used by swarm

The Bluzelle Bootstrap File

The bootstrap file, identified in the config file by the "bootstrap_file" parameter, see above, provides a list of nodes in the the swarm that the local instance of the SwarmDB daemon can communicate with. If the membership of the swarm has changed, these nodes will be used to introduce the node to the current swarm and catch it up to the current state, and the bootstrap file acts as a "starting peers list".

If you are running a static testnet (i.e., nodes do not join or leave the swarm) then every node should have the same bootstrap_file, and it should include an entry for every node. Thus, each node will appear in its own bootstrap file. If a node is not already in the swarm when it starts (i.e., it should dynamically join the swarm) then it should not be in its own bootstrap file.

The booststrap file format is a JSON array, containing JSON objects describing nodes as seen in the following example:

[
    {
        "host": "127.0.0.1",
        "name": "peer0",
        "port": 49152,
        "uuid": "d6707510-8ac6-43c1-b9a5-160cf54c99f5"
    },
    {
        "host": "127.0.0.1",
        "name": "peer1",
        "port": 49153,
        "uuid": "5c63dfdc-e251-4b9c-8c36-404972c9b4ec"
    },
    ...
    {
        "host": "127.0.0.1",
        "name": "peer1",
        "port": 49153,
        "uuid": "ce4bfdc-63c7-5b9d-1c37-567978e9b893a"
    }
]

where the Peer object parameters are (ALL PARAMETERS MUST MATCH THE PEER CONFIGURATION):

• "host" - the IP address associated with the external node
• "name" - the human readable name that the external node uses
• "port" - the socket address that the external node will listen for protobuf and web socket requests. (listen_port in the config file)
• "uuid" - the universally unique identifier that the external node uses to uniquely identify itself. This is required to be unique per node and consistent between the peerlist and the config.

Note that if node cryptography is enabled (see swarmdb --help), node uuids are their public keys.

Steps to setup and run Daemon:

1. Create each of the JSON files as described above in swarmDB/build/output/, where the swarm executable resides. (bluzelle.json, bluzelle2.json, bluzelle3.json, bluzelle4.json, peers.json).
2. Create an account with Etherscan: https://etherscan.io/register
3. Create an Etherscan API KEY by clicking Developers -> API-KEYs.
4. Add your Etherscan API KEY Token to the configuration files.
5. Modify the ethereum address to be an Ethereum mainnet address that contains tokens or use the sample address provided above.
6. Ensure that each swarmdb instance is configured to listen on a different port and has a different uuid, and that the peers file contains correct uuids and addresses for all nodes
7. Deploy your swarm of Daemons. From the swarmDB/build/output/ directory, run:

$ ./swarm -c bluzelle.json
$ ./swarm -c bluzelle2.json
$ ./swarm -c bluzelle3.json

Integration Tests With Bluzelle's Javascript Client

Installation - macOSX

Homebrew

$ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

Node

$ brew install node

Yarn

$ brew install yarn

Installation - Ubuntu

NPM

$ sudo apt-get install npm

Update NPM

$ sudo npm install npm@latest -g

Yarn

$ curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list

$ sudo apt-get update && sudo apt-get install yarn

Running Integration Tests

Script to clone bluzelle-js repository and copy template configuration files or run tests with your configuration files.

$ qa/integration-tests setup // Sets up template configuration files

$ qa/integration-tests // Runs tests with configuration files you've created

Testing Locally

$ cd scripts

Follow instructions in readme.md

Connectivity Test

$ ./crud -s <SWARM-ID> -n localhost:49154 status

Client: crud-script-0
Sending:
swarm_id: "<SWARM-ID>"
sender: "crud-script-0"
status_request: ""

------------------------------------------------------------

Response: 

swarm_version: "0.3.1443"
swarm_git_commit: "0.3.1096-41-g91cef89"
uptime: "1 days, 17 hours, 29 minutes"
module_status_json: ... 
pbft_enabled: true

Response: 
{
    "module" : 
    [
        {
            "name" : "pbft",
            "status" : 
            {
                "is_primary" : false,
                "latest_checkpoint" : 
                {
                    "hash" : "",
                    "sequence_number" : 3800
                },
                "latest_stable_checkpoint" : 
                {
                    "hash" : "",
                    "sequence_number" : 3800
                },
                "next_issued_sequence_number" : 1,
                "outstanding_operations_count" : 98,
                "peer_index" : 
                [
                    {
                        "host" : "127.0.0.1",
                        "name" : "node_0",
                        "port" : 50000,
                        "uuid" : "MFYwEAYHKoZIzj0CAQYFK4EEAAoDQgAE/HIPqL97zXbPN8CW609Dddu4vSKx/xnS1sle0FTgyzaDil1UmmQkrlTsQQqpU7N/kVMbAY+/la3Rawfw6VjVpA=="
                    },
                    {
                        "host" : "127.0.0.1",
                        "name" : "node_1",
                        "port" : 50001,
                        "uuid" : "MFYwEAYHKoZIzj0CAQYFK4EEAAoDQgAELUJ3AivScRn6sfBgBsBi3I18mpOC5NZ552ma0QTFSHVdPGj98OBMhxMkyKRI6UhAeuUTDf/mCFM5EqsSRelSQw=="
                    },
                    {
                        "host" : "127.0.0.1",
                        "name" : "node_2",
                        "port" : 50002,
                        "uuid" : "MFYwEAYHKoZIzj0CAQYFK4EEAAoDQgAEg+lS+GZNEOqhftj041jCjLabPrOxkkpTHSWgf6RNjyGKenwlsdYF9Xg1UH1FZCpNVkHhCLi2PZGk6EYMQDXqUg=="
                    }
                ],
                "primary" : 
                {
                    "host" : "127.0.0.1",
                    "host_port" : 50001,
                    "name" : "node_1",
                    "uuid" : "MFYwEAYHKoZIzj0CAQYFK4EEAAoDQgAELUJ3AivScRn6sfBgBsBi3I18mpOC5NZ552ma0QTFSHVdPGj98OBMhxMkyKRI6UhAeuUTDf/mCFM5EqsSRelSQw=="
                },
                "unstable_checkpoints_count" : 0,
                "view" : 1
            }
        }
    ]
}

------------------------------------------------------------

Create database

./crud -s <SWARM-ID> -n localhost:50000 create-db -u myuuid

Client: crud-script-0
------------------------------------------------------------

Response: 
header {
  db_uuid: "myuuid"
  nonce: 2998754133578549919
}

------------------------------------------------------------

Create

$ ./crud -s <SWARM-ID> -n localhost:50000 create -u myuuid -k mykey -v myvalue

Client: crud-script-0
------------------------------------------------------------

Response: 
header {
  db_uuid: "myuuid"
  nonce: 9167923913779064632
}

------------------------------------------------------------

Read

$ ./crud -s <SWARM-ID> -n localhost:50000 read -u myuuid -k mykey

Client: crud-script-0
------------------------------------------------------------

Response: 
header {
  db_uuid: "myuuid"
  nonce: 1298794800698891064
}
read {
  key: "mykey"
  value: "myvalue"
}

------------------------------------------------------------

Update

$ ./crud -s <SWARM-ID> -n localhost:50000 update -u myuuid -k mykey -v mynewvalue

Client: crud-script-0
------------------------------------------------------------

Response: 
header {
  db_uuid: "myuuid"
  nonce: 9006453024945657757
}

------------------------------------------------------------

Delete

$ ./crud -s <SWARM-ID> -n localhost:50000 delete -u myuuid -k mykey

Client: crud-script-0
------------------------------------------------------------

Response: 
header {
  db_uuid: "myuuid"
  nonce: 7190311901863172254
}

------------------------------------------------------------

Subscribe

$ ./crud -s <SWARM-ID> -n localhost:50000 subscribe -u myuuid -k mykey

Client: crud-script-0
------------------------------------------------------------

Response: 
header {
  db_uuid: "myuuid"
  nonce: 8777225851310409007
}

------------------------------------------------------------

Waiting....

Response: 
header {
  db_uuid: "myuuid"
  nonce: 8777225851310409007
}
subscription_update {
  key: "mykey"
  value: "myvalue"
}

------------------------------------------------------------

Waiting....

Delete database

./crud -s <SWARM-ID> -n localhost:50000 delete-db -u myuuid

Client: crud-script-0
------------------------------------------------------------

Response: 
header {
  db_uuid: "myuuid"
  nonce: 1540670102065057350
}

------------------------------------------------------------

Adding or Removing A Peer

Dynamically adding and removing peers is not supported in this release. This functionality will be available in a subsequent version of swarmDB.

Help & Options

$ ./crud --help
usage: crud [-h] [-p] [-i ID] -n NODE
            {status,create-db,delete-db,has-db,writers,add-writer,remove-writer,create,read,update,delete,has,keys,size,subscribe}
            ...

crud

positional arguments:
  {status,create-db,delete-db,has-db,writers,add-writer,remove-writer,create,read,update,delete,has,keys,size,subscribe}
    status              Status
    create-db           Create database
    delete-db           Delete database
    has-db              Has database
    writers             Database writers
    add-writer          Add database writers
    remove-writer       Remove database writers
    create              Create k/v
    read                Read k/v
    update              Update k/v
    delete              Delete k/v
    has                 Determine whether a key exists within a DB by UUID
    keys                Get all keys for a DB by UUID
    size                Determine the size of the DB by UUID
    subscribe           Subscribe and monitor changes for a key

optional arguments:
  -h, --help            show this help message and exit
  -i ID, --id ID        Crud script sender id (default 0)
  -s <SWARM-ID>,        Swarm id
    --swarm_id <SWARM-ID>  

required arguments:
  -n NODE, --node NODE  node's address (ex. 127.0.0.1:51010)