sbnair / polymesh

Node for Polymesh Blockchain

Polymesh Blockchain - By Polymath

Polymesh is a blockchain for regulated securities and open finance.

Whitepaper

https://polymath.network/polymesh-whitepaper

Audit

See the audit folder for details of audits undertaken on the Polymesh code base.

Public Testnets

There are two public testnets being run for Polymesh - the Alcyone testnet, and the Incentivised Testnet. These are entirely distinct networks (different block numbers, different operators), although both based on the same codebase and versioning.

We provide linux binaries for each testnet release.

The latest release for Polymesh can be found at:
https://github.com/PolymathNetwork/Polymesh/releases

Generally you should be able to run the latest release for both Alcyone and the ITN, although the on-chain version of each network might differ during upgrade cycles.

Below are simple instructions for running a non-operating node (i.e. a node that does not produce blocks or vote on the correctness of other blocks). For more details on monitoring infrastructure for nodes and running an operator node, see the https://github.com/PolymathNetwork/polymesh-tools repository.

Polymesh Incentivised Testnet (ITN)

The ITN is designed for testing Polymesh functionality at scale, in a production like setting. Users can earn rewards by exercising different aspects of the Polymesh functionality.

For more details on the approach and possible rewards, please see:
https://info.polymath.network/blog/running-with-the-bulls-on-the-polymesh-incentivized-testnet

To run a node on the Polymesh ITN you can grab the latest release from the link above, and then execute:

./target/release/polymesh --chain itn

Polymesh Alcyone Public Testnet

The Alcyone public testnet is similar to the ITN, but does not offer incentives to users to participate and test with it. It also has a simpler onboarding process (no-KYC required) and a bridge allowing test KOVAN based POLY to be bridged to testnet POLYX.

Specifying no chain at the command line defaults to the Polymesh Alcyone Public Testnet (e.g. --chain alcyone), so to run a node which connects to the Alcyone Public Testnet, you can start your node with:

./target/release/polymesh

Operators

A guide to running an operator node can be found at:

https://github.com/PolymathNetwork/polymesh-tools/tree/main/docs/operator

Documentation

Further details on Polymesh concepts and networks can be found at:

https://developers.polymesh.live/

Code documentation can be found at:

https://docs.polymesh.live/

Build

Install Rust:

curl https://sh.rustup.rs -sSf | sh

Install required tools:

./scripts/init.sh

Build Wasm and native code:

cargo build --release

Run unit tests:

./scripts/test.sh

Branches

• The develop branch is the working branch with the latest code changes.
• The alcyone branch tracks code deployed to the Polymesh Alcyone Public Testnet.
• The staging branch tracks Alcyone except during a release cycle where it is upgraded ahead of Alcyone.
• The tooling branch tracks the next candidate release for Alcyone.

Development

Single node development chain

You can start a development chain with:

./target/release/polymesh --dev

Detailed logs may be shown by running the node with the following environment variables set: RUST_LOG=debug RUST_BACKTRACE=1 ./target/release/polymesh --dev.

To access the Polymesh Chain using the Web Interface do the following:

1. Click on the Polymesh logo in the top-left corner of the UI. You can then select "Local Node" under the Development section.

   Note: if the polymesh node above is on a different machine than your browser (e.g., a server on your local network), you'll need to use a "custom endpoint", e.g., ws://192.168.0.100:9944/. The Web Interface uses https, but your polymesh instance does not, so you'll need ws:// as opposed to wss://. You'll also need to use http://httpapp.polymesh.live/ instead of Web Interface. Otherwise, you'll have problems with mixed-content blocking (https vs. http). Finally, add --rpc-external --ws-external --rpc-cors all to the polymesh invocation above.

2. If you have custom types definitions that differ from the Polymesh Alcyone Public Testnet, you can update these in Settings tab under the Developer section.

3. Reload the page.

Multi-node local testnet

If you want to see the multi-node consensus algorithm in action locally, then you can create a local testnet with two validator nodes for Alice and Bob, who are the initial authorities of the genesis chain that have been endowed with testnet units.

cd scripts/cli
npm install
./run.sh

This uses pm2 to run a local three node network for demonstrate simple consensus.

To stop the chain you can use:

./stop.sh

and to display log files you can use:

./log.sh

Unit Tests

Unit tests are packaged with the Rust code. To run these, you can execute:

cargo test --package polymesh-runtime-tests  --features default_identity
cargo test --package pallet-staking
cargo test --package pallet-balances
cargo test --package polymesh-primitives
cargo test --package pallet-pips-rpc
cargo test --package pallet-transaction-payment

Initialise

You can seed the network with some identities, claims, signing keys and assets by running the functional test.

cd scripts/cli
node run test

See README for details.

Benchmarks

Polymesh runtime benchmarks can be run with a command that specifies the pallet and the name of the extrinsic to be benchmarked, for example:

cargo run --release --features runtime-benchmarks -- \
    benchmark -p="*" -e="*"

Note that the CLI binary should be built in release mode and that the feature flag runtime-benchmarks should be set to enable the CLI option benchmark.

Debug

Environment

Install GDB for your distribution.

Build

Binary should be built in debug mode, using cargo build without --release parameter:

cargo build

Test cases are built in debug mode by default.

Using GDB

Using rust-gdb you will get pretty printed values for more types than directly with gdb.

The following example, starts gdb, sets a breakpoint, and starts our compiled polymesh:

$> rust-gdb ./target/debug/polymesh
GNU gdb (Ubuntu 8.2.91.20190405-0ubuntu3) 8.2.91.20190405-git
Copyright (C) 2019 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./target/debug/polymesh...

(gdb) b balances/src/lib.rs : 390
Breakpoint 1 at 0x2b792d0: balances/src/lib.rs:390. (2 locations)

(gdb) run --dev
Starting program: ./target/debug/polymesh --dev
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
2020-02-26 12:48:37 Running in --dev mode, RPC CORS has been disabled.
2020-02-26 12:48:37 Polymesh Node
...

License

LICENSE

Substrate Framework

Polymesh is built using the Substrate Framework.

Polymath

Polymath Website