Milestone: mempool and block producer

[andelf]

This issue will be used to trace the dev process of mempool & block producer.

The goal is to run the very first testnet of opentron.🚀

Update 2021/03/01

Since the producer is the most complex part, the milestone is divided into:

• executor for all type of transactions
• a state-db implementation: use cargo run -- dev to test against it
• refactor channel protocol to handle transaction broadcast
• impl Manager::produceBlock (in manager crate)
• impl consensus base(code in base/*.java)
  • most of the code logic is implemented by manager crate
• impl DPoS mining (logic in dpos/*.java files)
  • DposSlot - merge logic into Manager
  • IncentiveManager
  • MaintenanceManager
  • StateManager
  • DposService
  • DposTask - rewrite using producer_service crate

Update 2021/03/15

• refactor channel protocol to handle incoming and outgoing broadcasts
• add a PeerContext to manage connected peers

[andelf]

To clarify:

The top-level logic of a FullNode is: https://github.com/opentron/opentron/blob/master/docs/txpool.md

• RpcApiService(including HTTP/gRPC) is responsible for accepting and validating new transactions(broadcast)
• TronNetService is the gossip layer to broadcast a transaction to the whole network
• ConsensusService is responsible for producing blocks

Use dposService.getBlockHandle().produce(miner, pTime, timeout) to produce a block.

[oikos1]

Thanks @andelf. Merged #59.

[andelf]

Update 2021/03/03

To test the slot timing, now the node generates empty blocks.

NOTE: The java-tron's block producer is not optimized. It sleeps and waits for the timing slot. Default.

This might be changed in opentron(a compatible change):

• The opentron might pack transactions incrementally, never sleep and waste time.

[andelf]

Update 2021/03/05

Broadcast channels

• Outgoing block broadcast(from block producer)
• Outgoing transaction broadcast(from API)
• Incoming transaction(from gossip, to mempool)
• Incoming block(to consensus handler, handle forks and states)

[andelf]

Update 2021/03/08

• massive refactor
• impl basic broadcastTransaction graphql API

+TODO

• some command-line tool to generate raw transaction

[andelf]

Update 2021/03/11

Now it packs transactions.

And can run multiple SRs in a single node(for local-test).

[andelf]

Update 2021/03/14

Testing against transactions and block producer.

Add a new cli to send transfers.

[andelf]

Update 2021/03/15

Use cli to create witness, vote...

TODO: all commands

wallet-cli 0.1.0
OpenTron Developers <info@opentron.org>
Opentron command line util

USAGE:
    cli [FLAGS] [OPTIONS] <SUBCOMMAND>

FLAGS:
    -d, --dont-broadcast    Don't broadcast transaction to the network (just print to stdout)
    -h, --help              Prints help information
    -s, --skip-sign         Skip actual sign process
    -V, --version           Prints version information

OPTIONS:
    -k, --account <account>                 The account address used for signing
    -x, --expiration <expiration>           Set the time in seconds before a transaction expires
        --fee-limit <fee-limit>             Maximum value of TRX allowed consumed
        --memo <memo>                       The memo for the transaction
    -K, --private-key <private-key>         The private key used for signing [env:
                                            OPENTRON_CLI_PRIVATE_KEY=]
        --rpc-url <http://[HOST]:[PORT]>    Raw RPC address to connect [env: OPENTRON_CLI_RPC_URL=]  [default:
                                            http://127.0.0.1:3000]

SUBCOMMANDS:
    account     Account management
    asset       TRC10 asset management
    contract    Smart Contract
    exchange    On-chain DEX
    market      New On-chain Echange
    proposal    Proposal management for active witnesses
    system      Chain governance and resource management
    transfer    Transfer TRX tokens
    witness     Witness management