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

     1  // Copyright 2021 github.com/gagliardetto
     2  // This file has been modified by github.com/gagliardetto
     3  //
     4  // Copyright 2020 dfuse Platform Inc.
     5  //
     6  // Licensed under the Apache License, Version 2.0 (the "License");
     7  // you may not use this file except in compliance with the License.
     8  // You may obtain a copy of the License at
     9  //
    10  //      http://www.apache.org/licenses/LICENSE-2.0
    11  //
    12  // Unless required by applicable law or agreed to in writing, software
    13  // distributed under the License is distributed on an "AS IS" BASIS,
    14  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    15  // See the License for the specific language governing permissions and
    16  // limitations under the License.
    17  package rpc
    18  
    19  import (
    20  	"context"
    21  )
    22  
    23  // GetRecentBlockhash returns a recent block hash from the ledger,
    24  // and a fee schedule that can be used to compute the cost of submitting a transaction using it.
    25  func (cl *Client) GetRecentBlockhash(
    26  	ctx context.Context,
    27  	commitment CommitmentType, // optional
    28  ) (out *GetRecentBlockhashResult, err error) {
    29  	params := []interface{}{}
    30  	if commitment != "" {
    31  		params = append(params, M{"commitment": commitment})
    32  	}
    33  
    34  	err = cl.rpcClient.CallForInto(ctx, &out, "getRecentBlockhash", params)
    35  	return
    36  }