81 lines
2.8 KiB
Go
81 lines
2.8 KiB
Go
|
// Copyright 2017-2021 DERO Project. All rights reserved.
|
||
|
|
// Use of this source code in any form is governed by RESEARCH license.
|
||
|
|
// license can be found in the LICENSE file.
|
||
|
|
// GPG: 0F39 E425 8C65 3947 702A 8234 08B2 0360 A03A 9DE8
|
||
|
|
//
|
||
|
|
//
|
||
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
|
||
|
|
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||
|
|
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
|
||
|
|
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||
|
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
||
|
|
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||
|
|
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||
|
|
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
|
||
|
|
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
|
||
|
|
package rpc
|
||
|
|
|
||
|
|
import "fmt"
|
||
|
|
import "context"
|
||
|
|
import "runtime/debug"
|
||
|
|
import "golang.org/x/time/rate"
|
||
|
|
import "github.com/deroproject/derohe/rpc"
|
||
|
|
|
||
|
|
// rate limiter is deployed, in case RPC is exposed over internet
|
||
|
|
// someone should not be just giving fake inputs and delay chain syncing
|
||
|
|
var get_block_limiter = rate.NewLimiter(16.0, 8) // 16 req per sec, burst of 8 req is okay
|
||
|
|
|
||
|
|
func GetBlockTemplate(ctx context.Context, p rpc.GetBlockTemplate_Params) (result rpc.GetBlockTemplate_Result, err error) {
|
||
|
|
|
||
|
|
defer func() { // safety so if anything wrong happens, we return error
|
||
|
|
if r := recover(); r != nil {
|
||
|
|
err = fmt.Errorf("panic occured. stack trace %s", debug.Stack())
|
||
|
|
}
|
||
|
|
}()
|
||
|
|
/*
|
||
|
|
if !get_block_limiter.Allow() { // if rate limiter allows, then add block to chain
|
||
|
|
logger.Warnf("Too many get block template requests per sec rejected by chain.")
|
||
|
|
|
||
|
|
return nil,&jsonrpc.Error{
|
||
|
|
Code: jsonrpc.ErrorCodeInvalidRequest,
|
||
|
|
Message: "Too many get block template requests per sec rejected by chain.",
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
}
|
||
|
|
*/
|
||
|
|
|
||
|
|
// validate address
|
||
|
|
miner_address, err := rpc.NewAddress(p.Wallet_Address)
|
||
|
|
if err != nil {
|
||
|
|
return result, fmt.Errorf("Address could not be parsed, err:%s", err)
|
||
|
|
}
|
||
|
|
|
||
|
|
bl, mbl, mbl_hex, reserved_pos, err := chain.Create_new_block_template_mining(*miner_address)
|
||
|
|
_ = mbl
|
||
|
|
_ = reserved_pos
|
||
|
|
if err != nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
prev_hash := ""
|
||
|
|
for i := range bl.Tips {
|
||
|
|
prev_hash = prev_hash + bl.Tips[i].String()
|
||
|
|
}
|
||
|
|
|
||
|
|
result.JobID = fmt.Sprintf("%d.%d.%s", bl.Timestamp, 0, p.Miner)
|
||
|
|
if p.Block {
|
||
|
|
result.Blocktemplate_blob = fmt.Sprintf("%x", bl.Serialize())
|
||
|
|
}
|
||
|
|
diff := chain.Get_Difficulty_At_Tips(bl.Tips)
|
||
|
|
result.Blockhashing_blob = mbl_hex
|
||
|
|
result.Height = bl.Height
|
||
|
|
result.Prev_Hash = prev_hash
|
||
|
|
result.Difficultyuint64 = diff.Uint64()
|
||
|
|
result.Difficulty = diff.String()
|
||
|
|
result.Status = "OK"
|
||
|
|
|
||
|
|
return result, nil
|
||
|
|
}
|