elastos.ela

README

DNA (Distributed Networks Architecture)

DNA is a decentralized distributed network protocol based on blockchain technology and is implemented in Golang. Through peer-to-peer network, DNA can be used to digitize assets and provide financial service, including asset registration, issuance, transfer, etc.

Highlight Features

• Scalable Lightweight Universal Smart Contract
• Crosschain Interactive Protocol
• Quantum-Resistant Cryptography (optional module)
• China National Crypto Standard (optional module)
• High Optimization of TPS
• Distributed Storage and File Sharding Solutions Based on IPFS
• P2P Link Layer Encryption
• Node Access Control
• Multiple Consensus Algorithm Support (DBFT/RBFT/SBFT)
• Configurable Block Generation Time
• Configurable Digital Currency Incentive
• Configable Sharding Consensus (in progress)

Building

The requirements to build DNA are:

• Go version 1.8 or later
• Glide (a third-party package management tool)
• Properly configured Go environment

Clone the DNA repository into the appropriate $GOPATH/src directory.

$ git clone https://github.com/DNAProject/DNA.git

Fetch the dependent third-party packages with glide.

$ cd DNA
$ glide install

Build the source code with make.

$ make

After building the source code, you should see two executable programs:

• node: the node program
• nodectl: command line tool for node control

Follow the procedures in Deployment section to give them a shot!

Deployment

To run DNA successfully, at least 4 nodes are required. The four nodes can be deployed in the following two way:

• multi-hosts deployment
• single-host deployment

Configurations for multi-hosts deployment

We can do a quick multi-host deployment by modifying the default configuration file config.json. Change the IP address in SeedList section to the seed node's IP address, and then copy the changed file to the hosts that you will run on. On each host, put the executable program node, nodectl and the configuration file config.json into the same directory. Like :

$ ls
config.json node nodectl

Each node also needs a wallet.dat to run. The quickest way to generate wallets is to run ./nodectl wallet -c -p YourPassword on each host. Then, change the BookKeepers field to the 4 nodes' wallet public keys, which you can get from the last command's echo. The public key sequence does not matter. Now all configurations are completed.

Here's an snippet for configuration, note that 35.189.182.223 and 35.189.166.234 are two public seed node's addresses:

$ cat config.json
	...
    "SeedList": [
      "35.189.182.223:10338",
      "35.189.166.234:30338",
      "35.189.161.152:50338",
      "52.79.125.166:10338",
      "13.125.0.7:10338",
      "52.79.103.97:10338"
    ],
	...
    "BookKeepers": [
      "03ad8f4a837f7a02adedcea920b30c5c99517aabc7d2695d93ac572b9c2106d4c2",
      "0293bafa2df4813ae999bf42f35a38bcb9ec26a252fd28dc0ccab56c671cf784e6",
      "02aec70e084e4e5d36ed2db54aa708a6bd095fbb663929850986a5ec22061e1be2",
      "02758623d16774f3c5535a305e65ea949343eab06888ee2e7633b4f3f9d78d506c"
    ],
    "HttpRestPort": 20334,
    "HttpWsPort": 20335,
    "HttpJsonPort": 20336,
    "HttpLocalPort": 20337,
    "NodePort": 20338,
 	...

Configurations for single-host deployment

Copy the executable file node, nodectl and configuration file config.json to 4 different directories on the single host. Then change each config.json file as following.

• The SeedList section should be same in all config.json.
• For the seed node, the NodePort is the same with the port in SeedList part.
• For each non-seed node, the NodePort should have different ports.
• Also make sure that the HttpJsonPort and HttpLocalPort of each node do not conflict with those of the current host. After changing the configuration file, we also need to generate a wallet for each node and field the BookKeepers with the 4 nodes' wallet public keys. Please follow the steps in the multi-hosts deployment section above. Here's an example:

# directory structure #
$ tree
├── node1
│   ├── config.json
│   ├── node
│   ├── nodectl
│   └── wallet.dat
├── node2
│   ├── config.json
│   ├── node
│   ├── nodectl
│   └── wallet.dat
├── node3
│   ├── config.json
│   ├── node
│   ├── nodectl
│   └── wallet.dat
└── node4
    ├── config.json
    ├── node
    ├── nodectl
    └── wallet.dat

# configuration snippets #
$ cat node[1234]/config.json
    "SeedList": [
      "35.189.182.223:10338",
      "35.189.166.234:30338",
      "35.189.161.152:50338",
      "52.79.125.166:10338",
      "13.125.0.7:10338",
      "52.79.103.97:10338"
    ],
    "BookKeepers": [
      "03ad8f4a837f7a02adedcea920b30c5c99517aabc7d2695d93ac572b9c2106d4c2",
      "0293bafa2df4813ae999bf42f35a38bcb9ec26a252fd28dc0ccab56c671cf784e6",
      "02aec70e084e4e5d36ed2db54aa708a6bd095fbb663929850986a5ec22061e1be2",
      "02758623d16774f3c5535a305e65ea949343eab06888ee2e7633b4f3f9d78d506c"
    ],
    "HttpRestPort": 10334,
    "HttpWsPort": 10335,
    "HttpJsonPort": 10336,
    "HttpLocalPort": 10337,
    "NodePort": 10338,
    ...

    "SeedList": [
      "35.189.182.223:10338",
      "35.189.166.234:30338",
      "35.189.161.152:50338",
      "52.79.125.166:10338",
      "13.125.0.7:10338",
      "52.79.103.97:10338"
    ],
    "BookKeepers": [
      "03ad8f4a837f7a02adedcea920b30c5c99517aabc7d2695d93ac572b9c2106d4c2",
      "0293bafa2df4813ae999bf42f35a38bcb9ec26a252fd28dc0ccab56c671cf784e6",
      "02aec70e084e4e5d36ed2db54aa708a6bd095fbb663929850986a5ec22061e1be2",
      "02758623d16774f3c5535a305e65ea949343eab06888ee2e7633b4f3f9d78d506c"
    ],
    "HttpRestPort": 20334,
    "HttpWsPort": 20335,
    "HttpJsonPort": 20336,
    "HttpLocalPort": 20337,
    "NodePort": 20338,
    ...

    "SeedList": [
      "35.189.182.223:10338",
      "35.189.166.234:30338",
      "35.189.161.152:50338",
      "52.79.125.166:10338",
      "13.125.0.7:10338",
      "52.79.103.97:10338"
    ],
    "BookKeepers": [
      "03ad8f4a837f7a02adedcea920b30c5c99517aabc7d2695d93ac572b9c2106d4c2",
      "0293bafa2df4813ae999bf42f35a38bcb9ec26a252fd28dc0ccab56c671cf784e6",
      "02aec70e084e4e5d36ed2db54aa708a6bd095fbb663929850986a5ec22061e1be2",
      "02758623d16774f3c5535a305e65ea949343eab06888ee2e7633b4f3f9d78d506c"
    ],
    "HttpRestPort": 30334,
    "HttpWsPort": 30335,
    "HttpJsonPort": 30336,
    "HttpLocalPort": 30337,
    "NodePort": 30338,
    ...

    "SeedList": [
      "35.189.182.223:10338",
      "35.189.166.234:30338",
      "35.189.161.152:50338",
      "52.79.125.166:10338",
      "13.125.0.7:10338",
      "52.79.103.97:10338"
    ],
    "BookKeepers": [
      "03ad8f4a837f7a02adedcea920b30c5c99517aabc7d2695d93ac572b9c2106d4c2",
      "0293bafa2df4813ae999bf42f35a38bcb9ec26a252fd28dc0ccab56c671cf784e6",
      "02aec70e084e4e5d36ed2db54aa708a6bd095fbb663929850986a5ec22061e1be2",
      "02758623d16774f3c5535a305e65ea949343eab06888ee2e7633b4f3f9d78d506c"
    ],
    "HttpRestPort": 40334,
    "HttpWsPort": 40335,
    "HttpJsonPort": 40336,
    "HttpLocalPort": 40337,
    "NodePort": 40338,

## Getting Started

Start the seed node program first and then other nodes. Just run:

```shell
$ ./node
$ - input you wallet password

Testing DNA in an open environment

We also provide an open testing environment. It supports the operation below:

1. make some transactions :

./nodectl test -ip 35.189.182.223 -port 10336 -tx perf -num 10

1. register, issue, transfer assert :

./nodectl test -ip 35.189.182.223 -port 10336 -tx full

1. look up block's information :

./nodectl info -ip 35.189.182.223 -port 10336 -height 10

1. look up transaction's information :

./nodectl info -ip 35.189.182.223 -port 10336 -txhash d438896f07786b74281bc70259b0caaccb87460171104ea17473b5e802033a98

......

Run ./nodectl --h for more details.

Some other available nodes for testing:

IP               PORT
----------------------
35.189.182.223:  10336
35.189.166.234:  30336
35.189.161.152:  50336
52.79.125.166:   10336
13.125.0.7:      10336
52.79.103.97:    10336

Notice: The nodes above are intended to be used for public testing only. The data saved on the testing chain maybe be reset at any time. Keep in mind to back up the data by yourself to avoid data loss.

Contributing

Can I contribute patches to DNA project?

Yes! Please open a pull request with signed-off commits. We appreciate your help!

You can also send your patches as emails to the developer mailing list. Please join the DNA mailing list or forum and talk to us about it.

Either way, if you don't sign off your patches, we will not accept them. This means adding a line that says "Signed-off-by: Name " at the end of each commit, indicating that you wrote the code and have the right to pass it on as an open source patch.

Also, please write good git commit messages. A good commit message looks like this:

Header line: explain the commit in one line (use the imperative)

Body of commit message is a few lines of text, explaining things
in more detail, possibly giving some background about the issue
being fixed, etc etc.

The body of the commit message can be several paragraphs, and
please do proper word-wrap and keep columns shorter than about
74 characters or so. That way "git log" will show things
nicely even when it's indented.

Make sure you explain your solution and why you're doing what you're
doing, as opposed to describing what you're doing. Reviewers and your
future self can read the patch, but might not understand why a
particular solution was implemented.

Reported-by: whoever-reported-it
Signed-off-by: Your Name <youremail@yourhost.com>

Community

Mailing list

We have a mailing list for developers:

• OnchainDNA@googlegroups.com

We provide two ways to subscribe:

• Send any contents to the email OnchainDNA+subscribe@googlegroups.com

• Sign in https://groups.google.com/forum/#!forum/OnchainDNA

Site

• https://www.DNAproject.org

Forum

• https://forum.DNAproject.org

Wiki

• https://wiki.DNAproject.org

License

DNA is licensed under the Apache License, Version 2.0. See LICENSE for the full license text.