RPC and ZeroMQ APIs to support p2pool

Adds the following:

- "get_miner_data" to RPC API
- "json-miner-data" to ZeroMQ subscriber contexts

Both provide the necessary data to create a custom block template. They are used by p2pool.

Data provided:

- major fork version
- current height
- previous block id
- RandomX seed hash
- network difficulty
- median block weight
- coins mined by the network so far
- mineable mempool transactions

1 files changed, 10 insertions, 0 deletions

diff --git a/src/cryptonote_core/tx_pool.h b/src/cryptonote_core/tx_pool.h
index ab2a57ea2..80b38c51d 100644
--- a/src/cryptonote_core/tx_pool.h
+++ b/src/cryptonote_core/tx_pool.h
@@ -266,6 +266,15 @@ namespace cryptonote
     void get_transaction_backlog(std::vector<tx_backlog_entry>& backlog, bool include_sensitive = false) const;
 
     /**
+     * @brief get (hash, weight, fee) for all transactions in the pool - the minimum required information to create a block template
+     *
+     * @param backlog return-by-reference that data
+     * @param include_sensitive return stempool, anonymity-pool, and unrelayed txes
+     *
+     */
+    void get_block_template_backlog(std::vector<tx_block_template_backlog_entry>& backlog, bool include_sensitive = false) const;
+
+    /**
      * @brief get a summary statistics of all transaction hashes in the pool
      *
      * @param stats return-by-reference the pool statistics
@@ -540,6 +549,7 @@ namespace cryptonote
      *
      * @return true if the transaction is good to go, otherwise false
      */
+    bool is_transaction_ready_to_go(txpool_tx_meta_t& txd, const crypto::hash &txid, const cryptonote::blobdata_ref &txblob, transaction&tx) const;
     bool is_transaction_ready_to_go(txpool_tx_meta_t& txd, const crypto::hash &txid, const cryptonote::blobdata &txblob, transaction&tx) const;
 
     /**