github.com/deroproject/derosuite@v2.1.6-1.0.20200307070847-0f2e589c7a2b+incompatible/blockchain/tx_fees.go (about)

     1  // Copyright 2017-2018 DERO Project. All rights reserved.
     2  // Use of this source code in any form is governed by RESEARCH license.
     3  // license can be found in the LICENSE file.
     4  // GPG: 0F39 E425 8C65 3947 702A  8234 08B2 0360 A03A 9DE8
     5  //
     6  //
     7  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
     8  // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     9  // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
    10  // THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    11  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
    12  // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    13  // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
    14  // STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
    15  // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    16  
    17  package blockchain
    18  
    19  //import "math/big"
    20  
    21  import "github.com/deroproject/derosuite/config"
    22  
    23  //import "github.com/deroproject/derosuite/emission"
    24  
    25  // this file implements the logic to calculate fees dynamicallly
    26  
    27  //  get mininum size of block
    28  /*func Get_Block_Minimum_Size(version uint64) uint64 {
    29  	return config.CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE
    30  }*/
    31  
    32  // get maximum size of TX
    33  func Get_Transaction_Maximum_Size() uint64 {
    34  	return config.CRYPTONOTE_MAX_TX_SIZE
    35  }
    36  
    37  // get the tx fee
    38  // this function assumes that  fees are per KB
    39  // for every part of 1KB multiply by fee_per_kb
    40  func (chain *Blockchain) Calculate_TX_fee(hard_fork_version int64, tx_size uint64) uint64 {
    41  	size_in_kb := tx_size / 1024
    42  
    43  	if (tx_size % 1024) != 0 { // for any part there of, use a full KB fee
    44  		size_in_kb += 1
    45  	}
    46  
    47  	needed_fee := size_in_kb * config.FEE_PER_KB
    48  	return needed_fee
    49  
    50  }