github.com/gagliardetto/solana-go@v1.11.0/rpc/getFees.go (about)

     1  // Copyright 2021 github.com/gagliardetto
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package rpc
    16  
    17  import (
    18  	"context"
    19  
    20  	"github.com/gagliardetto/solana-go"
    21  )
    22  
    23  // GetFees returns a recent block hash from the ledger,
    24  // a fee schedule that can be used to compute the cost
    25  // of submitting a transaction using it, and the last
    26  // slot in which the blockhash will be valid.
    27  func (cl *Client) GetFees(
    28  	ctx context.Context,
    29  	commitment CommitmentType, // optional
    30  ) (out *GetFeesResult, err error) {
    31  	params := []interface{}{}
    32  	if commitment != "" {
    33  		params = append(params, M{"commitment": commitment})
    34  	}
    35  	err = cl.rpcClient.CallForInto(ctx, &out, "getFees", params)
    36  	return
    37  }
    38  
    39  type GetFeesResult struct {
    40  	RPCContext
    41  	Value *FeesResult `json:"value"`
    42  }
    43  
    44  type FeesResult struct {
    45  	// A Hash.
    46  	Blockhash solana.Hash `json:"blockhash"`
    47  
    48  	// FeeCalculator object, the fee schedule for this block hash.
    49  	FeeCalculator FeeCalculator `json:"feeCalculator"`
    50  
    51  	// DEPRECATED - this value is inaccurate and should not be relied upon.
    52  	LastValidSlot uint64 `json:"lastValidSlot"`
    53  
    54  	// Last block height at which a blockhash will be valid.
    55  	LastValidBlockHeight uint64 `json:"lastValidBlockHeight"`
    56  }