This package implements the generic DA interface defined in go-da

The generic DA interface defines how DA implementations can submit, retrieve and validate blobs.

The Avail DA implementation connects to a local Avail-light-node instance using the given config and allows using Avail as the DA layer.

The implementation calls the corresponding Avail node api docs methods.

Get retrieves blobs referred to by their ids.

The implementation calls Get endpoint on the Avail-light-node API.

Submit submits blobs and returns their ids and proofs.

The implementation calls Submit endpoint on the Avail-light-node API.

• Operating systems: GNU/Linux or macOS
• Golang 1.21+
• Ignite CLI v28.1.0
• Homebrew
• wget
• Avail Light Node
• Rust

• clone the repo

  https://github.com/availproject/avail.git

• go to root folder

  cd avail

• checkout to the following branch

  git checkout v1.9.0.3

• run node

  cargo run --locked --release -- --dev

• clone the repo

  https://github.com/availproject/avail-light-bootstrap.git

• go to root folder

  cd avail-light-bootstrap

• run node

  cargo run --release

• clone the repo

  https://github.com/availproject/avail-light.git

• go to root folder

  cd avail-light

• create a configuration file touch config.yaml in the root directory & put following content.

  http_server_host = '127.0.0.1'
  http_server_port = 8000
  port = 38000
  tcp_port_reuse = false
  autonat_only_global_ips = false
  autonat_throttle = 1
  autonat_retry_interval = 10
  autonat_refresh_interval = 30
  autonat_boot_delay = 5
  identify_protocol = '/avail_kad/id/1.0.0'
  identify_agent = 'avail-light-client/rust-client'
  bootstraps = [["12D3KooWStAKPADXqJ7cngPYXd2mSANpdgh1xQ34aouufHA2xShz", "/ip4/127.0.0.1/udp/39000"]]
  bootstrap_period = 300
  relays = []
  full_node_ws = ['ws://127.0.0.1:9944']
  confidence = 92.0
  avail_path = 'avail_path'
  log_level = 'INFO'
  log_format_json = false
  ot_collector_endpoint = 'http://otelcollector.avail.tools:4317'
  disable_rpc = false
  disable_proof_verification = false
  dht_parallelization_limit = 20
  put_batch_size = 1000
  query_proof_rpc_parallel_tasks = 8
  max_cells_per_rpc = 30
  threshold = 5000
  kad_record_ttl = 86400
  publication_interval = 43200
  replication_interval = 10800
  replication_factor = 20
  connection_idle_timeout = 30
  query_timeout = 60
  query_parallelism = 3
  caching_max_peers = 1
  disjoint_query_paths = false
  max_kad_record_number = 2400000
  max_kad_record_size = 8192
  max_kad_provided_keys = 1024
  app_id=1
  

• run node

  cargo run --release -- --network local -c config.yaml --clean

• generate avail key pair if not configured by adding the following seed phrase in identity.toml in root directory

  avail_secret_seed_phrase = 'bottom drive obey lake curtain smoke basket hold race lonely fit walk//Alice'

Now that you have a da node and light client running, we are ready to build and run our Cosmos-SDK blockchain (here we have taken gm application)

• go to the root directory and install rollkit by adding the following lines to go.mod

  
  replace github.com/cosmos/cosmos-sdk => github.com/rollkit/cosmos-sdk v0.50.1-rollkit-v0.11.9-no-fraud-proofs
  
  

  and run

  
  go mod tidy
  
  

• start your rollup

  create one script file (init-local.sh) in root folder

  touch init-local.sh
  
  

  add the following script to the script file (init-local.sh) or you can get the script from here

• to make use of avail as a da layer,

  • clone the repo

    git clone https://github.com/rollkit/avail-da.git

  • Go to the root dir

    cd avail-da

  • run the server

    go run ./cmd/avail-da/main.go

  note: make sure that port address(serving avail-da) must be the rollkit.da_address in the script file

• run the rollup chain

  go to root of the gm repo and run

  bash init-local.sh
  
  

• list your keys

  gmd keys list --keyring-backend test

  You should see an output like the following

  - address: gm1ffdft5ku0qw67eypavgyltjqj54yraaa4uj8pl
    name: gm-key-2
    pubkey: '{"@type":"/cosmos.crypto.secp256k1.PubKey","key":"AiRf1Vxwcuunu1yjPpSUPxW85Q9NhM1y0Dg3ozOEGUto"}'
    type: local
  - address: gm1r4g9lleykkw6mjdpmp6e0tgusymh4sa2swcw69
    name: gm-key
    pubkey: '{"@type":"/cosmos.crypto.secp256k1.PubKey","key":"A9hnpPl0G6VOBijJNheFXvJDg1O7NszzA8innoXF81N5"}'
    type: local
  

• Now we can test by sending the transaction by sending amount from one account to another

  
  gmd tx bank send [from_key_or_address] [to_address] [amount] [flags]
  
  

  ex:

  
   gmd tx bank send gm1ffdft5ku0qw67eypavgyltjqj54yraaa4uj8pl gm1r4g9lleykkw6mjdpmp6e0tgusymh4sa2swcw69 11stake --chain-id gm --keyring-backend test
  
  

  You'll be prompted to accept the transaction:

  auth_info:
  fee:
    amount: []
    gas_limit: "200000"
    granter: ""
    payer: ""
  signer_infos: []
  tip: null
  body:
    extension_options: []
    memo: ""
    messages:
    - '@type': /cosmos.bank.v1beta1.MsgSend
      amount:
      - amount: "11"
        denom: stake
      from_address: gm1ffdft5ku0qw67eypavgyltjqj54yraaa4uj8pl
      to_address: gm1r4g9lleykkw6mjdpmp6e0tgusymh4sa2swcw69
    non_critical_extension_options: []
    timeout_height: "0"
  signatures: []
  confirm transaction before signing and broadcasting [y/N]: 
  
  

  Type y if you'd like to confirm and sign the transaction. Then, you'll see the confirmation:

  confirm transaction before signing and broadcasting [y/N]: y
  code: 0
  codespace: ""
  data: ""
  events: []
  gas_used: "0"
  gas_wanted: "0"
  height: "0"
  info: ""
  logs: []
  raw_log: ""
  timestamp: ""
  tx: null
  txhash: 130EA420F2373C88F6191E1D203CEF272B666BE283316A17BC8B02FBABCBA1C9
  
  

  you can query the tx using using

  
  gmd q tx <hash>
  
  

  ex:

  
  gmd q tx 130EA420F2373C88F6191E1D203CEF272B666BE283316A17BC8B02FBABCBA1C9
  
  

  then you'll see

  
  code: 0
  codespace: ""
  data:   12260A242F636F736D6F732E62616E6B2E763162657461312E4D736753656E64526573706F6E736  5
  events:
  - attributes:
    - index: true
      key: fee
      value: ""
    - index: true
      key: fee_payer
      value: gm1ffdft5ku0qw67eypavgyltjqj54yraaa4uj8pl
    type: tx
  - attributes:
    - index: true
      key: acc_seq
      value: gm1ffdft5ku0qw67eypavgyltjqj54yraaa4uj8pl/0
    type: tx
  - attributes:
    - index: true
      key: signature
      value: y2ZU5c/CLcJpKbT8e2uZZz3T5buO/  efa9yNuODgLBd90xt4c6ErNf2H1OQnZerdpdez1H3kWdLyk769Pb2Sisg==
    type: tx
  - attributes:
    - index: true
      key: action
      value: /cosmos.bank.v1beta1.MsgSend
    - index: true
      key: sender
      value: gm1ffdft5ku0qw67eypavgyltjqj54yraaa4uj8pl
    - index: true
      key: module
      value: bank
    - index: true
      key: msg_index
      value: "0"
    type: message
  - attributes:
    - index: true
      key: spender
      value: gm1ffdft5ku0qw67eypavgyltjqj54yraaa4uj8pl
    - index: true
      key: amount
      value: 11stake
    - index: true
      key: msg_index
      value: "0"
    type: coin_spent
  - attributes:
    - index: true
      key: receiver
      value: gm1r4g9lleykkw6mjdpmp6e0tgusymh4sa2swcw69
    - index: true
      key: amount
      value: 11stake
    - index: true
      key: msg_index
      value: "0"
    type: coin_received
  - attributes:
    - index: true
      key: recipient
      value: gm1r4g9lleykkw6mjdpmp6e0tgusymh4sa2swcw69
    - index: true
      key: sender
      value: gm1ffdft5ku0qw67eypavgyltjqj54yraaa4uj8pl
    - index: true
      key: amount
      value: 11stake
    - index: true
      key: msg_index
      value: "0"
    type: transfer
  - attributes:
    - index: true
      key: sender
      value: gm1ffdft5ku0qw67eypavgyltjqj54yraaa4uj8pl
    - index: true
      key: msg_index
      value: "0"
    type: message
  gas_used: "61687"
  gas_wanted: "200000"
  height: "103"
  info: ""
  logs: []
  raw_log: ""
  timestamp: "2024-01-08T07:14:14Z"
  tx:
    '@type': /cosmos.tx.v1beta1.Tx
    auth_info:
      fee:
        amount: []
        gas_limit: "200000"
        granter: ""
        payer: ""
      signer_infos:
      - mode_info:
          single:
            mode: SIGN_MODE_DIRECT
        public_key:
          '@type': /cosmos.crypto.secp256k1.PubKey
          key: AiRf1Vxwcuunu1yjPpSUPxW85Q9NhM1y0Dg3ozOEGUto
        sequence: "0"
      tip: null
    body:
      extension_options: []
      memo: ""
      messages:
      - '@type': /cosmos.bank.v1beta1.MsgSend
        amount:
        - amount: "11"
          denom: stake
        from_address: gm1ffdft5ku0qw67eypavgyltjqj54yraaa4uj8pl
        to_address: gm1r4g9lleykkw6mjdpmp6e0tgusymh4sa2swcw69
      non_critical_extension_options: []
      timeout_height: "0"
    signatures:
    - y2ZU5c/CLcJpKbT8e2uZZz3T5buO/  efa9yNuODgLBd90xt4c6ErNf2H1OQnZerdpdez1H3kWdLyk769Pb2Sisg==
  txhash: 130EA420F2373C88F6191E1D203CEF272B666BE283316A17BC8B02FBABCBA1C9
  
  
  

  then query the bank balances

  
  gmd query bank balances gm1ffdft5ku0qw67eypavgyltjqj54yraaa4uj8pl
  
  

  you can see

  
  balances:
  - amount: "9999999999999999999999989"
    denom: stake
  pagination:
    total: "1"
  
  

  query the balance of other key

  
  gmd query bank balances gm1r4g9lleykkw6mjdpmp6e0tgusymh4sa2swcw69
  
  

  you can see

  balances:
  - amount: "10000000000000000000000011"
    denom: stake
  pagination:
    total: "1"
  
  

With this You've built a local rollup that posts to a local avail light node