[3.2] Add /v1/chain/get_unapplied_transactions to producer_api_plugin

[heifner]

Add /v1/chain/get_unapplied_transactions to producer_api_plugin

Interface:

   get_unapplied_transactions_params {
      string                lower_bound;  /// transaction id
      optional<uint32_t>    limit = 100;
      optional<uint32_t>    time_limit_ms; // defaults to 10ms
   };

   unapplied_trx {
      transaction_id_type       trx_id;
      time_point_sec            expiration;
      string                    trx_type; // eosio::chain::trx_enum_type values or "read_only"
      account_name              first_auth;
      account_name              first_receiver;
      action_name               first_action;
      uint16_t                  total_actions = 0;
      uint32_t                  billed_cpu_time_us = 0;
      size_t                    size = 0;
   };

   get_unapplied_transactions_result {
      size_t                     size = 0;
      size_t                     incoming_size = 0;
      vector<unapplied_trx>      trxs;
      string                     more; ///< fill lower_bound with trx id to fetch next set of transactions
   };

Resolves #109

Example use:

$ curl -s http://127.0.0.1:8888/v1/producer/get_unapplied_transactions -d '{"limit":2}' | jq
{
  "size": 7495,
  "incoming_size": 0,
  "trxs": [
    {
      "trx_id": "fa9692a4bdd688bf889890d972e1d3a2ee00ad636bdd7ce56115ac962760c0d9",
      "expiration": "2022-09-17T16:31:10",
      "trx_type": "aborted",
      "first_auth": "fhjnm.c.wam",
      "first_receiver": "m.federation",
      "first_action": "mine",
      "total_actions": 1,
      "billed_cpu_time_us": 701,
      "size": 934
    },
    {
      "trx_id": "731fc1f6c1e7ed958090fad622cf4f11af97bab44320a42876c38703faadbb59",
      "expiration": "2022-09-17T16:30:16",
      "trx_type": "aborted",
      "first_auth": "a44cg.wam",
      "first_receiver": "m.federation",
      "first_action": "mine",
      "total_actions": 1,
      "billed_cpu_time_us": 746,
      "size": 934
    }
  ],
  "more": "dcd3464938ffc06f8aced1a1706ae0082fdaabc680f58854bfb8932ed822ce2c"
}
$ curl -s http://127.0.0.1:8888/v1/producer/get_unapplied_transactions -d '{"lower_bound":"dcd3464938ffc06f8aced1a1706ae0082fdaabc680f58854bfb8932ed822ce2c","limit":2}' | jq
{
  "size": 12428,
  "incoming_size": 4475,
  "trxs": [
    {
      "trx_id": "dcd3464938ffc06f8aced1a1706ae0082fdaabc680f58854bfb8932ed822ce2c",
      "expiration": "2022-09-17T16:30:16",
      "trx_type": "aborted",
      "first_auth": "jkbsg.wam",
      "first_receiver": "m.federation",
      "first_action": "mine",
      "total_actions": 1,
      "billed_cpu_time_us": 504,
      "size": 934
    },
    {
      "trx_id": "0b1e96b1eb56855d4eeee9f70ca9c623296212304851743c916b65e52ff83999",
      "expiration": "2022-09-17T16:30:16",
      "trx_type": "aborted",
      "first_auth": "kxiik.wam",
      "first_receiver": "m.federation",
      "first_action": "mine",
      "total_actions": 1,
      "billed_cpu_time_us": 545,
      "size": 934
    }
  ],
  "more": "00edb80be7eb903d74970d653cb63489c573d55d867078b794328e13c32e3227"
}

[ericpassmore]

Updated openapi updates producer.swagger.yaml
fixes #184

[ericpassmore]

Defaulting to max seems big. Not sure what is typical, I would have made the default a max of short int, uint16. Max should be bigger up to unit32.

[heifner]

It is limited by the time_limit_ms, setting limit to max uint32 just means it is limited by time only.

[spoonincode]

ah one sec

ok