156 lines
5.1 KiB
Python
156 lines
5.1 KiB
Python
# Copyright (c) 2014-2017 esotericnonsense (Daniel Edgecumbe)
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or https://opensource.org/licenses/mit-license.php
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import datetime
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import math
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import curses
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import asyncio
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from decimal import Decimal
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class MonitorView(object):
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def __init__(self, client):
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self._client = client
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self._pad = None
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self._visible = False
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self._lock = asyncio.Lock()
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self._bestblockhash = None
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self._bestblockheader = None # raw json blockheader
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self._bestblock = None # raw json block
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self._bestcoinbase = None # raw json tx
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self._dt = None
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def _draw(self):
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# TODO: figure out window width etc.
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if self._pad is not None:
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self._pad.clear()
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else:
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self._pad = curses.newpad(20, 100)
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if self._bestblockheader:
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bbh = self._bestblockheader
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self._pad.addstr(0, 1, "Height: {: 8d}".format(bbh["height"]))
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self._pad.addstr(0, 36, bbh["hash"])
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if self._bestblock:
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bb = self._bestblock
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self._pad.addstr(1, 1, "Size: {: 8d} bytes Weight: {: 8d} WU".format(
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bb["size"],
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bb["weight"]
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))
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self._pad.addstr(1, 64, "Block timestamp: {}".format(
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datetime.datetime.utcfromtimestamp(bb["time"]),
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))
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if self._dt:
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stampdelta = int(
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(self._dt - datetime.datetime.utcfromtimestamp(bb["time"]))
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.total_seconds())
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if stampdelta > 3600*3: # probably syncing
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stampdelta_string = " (syncing)"
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elif stampdelta > 0:
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m, s = divmod(stampdelta, 60)
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h, m = divmod(m, 60)
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d, h = divmod(h, 24)
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stampdelta_string = "({:d}d {:02d}:{:02d}:{:02d} by stamp)".format(d,h,m,s)
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else:
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stampdelta_string = " (stamp in future)"
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self._pad.addstr(2, 64, "Age: {}".format(
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stampdelta_string))
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self._pad.addstr(2, 1, "Transactions: {} ({} bytes/tx, {} WU/tx)".format(
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len(bb["tx"]),
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bb["size"] // len(bb["tx"]),
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bb["weight"] // len(bb["tx"]),
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))
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if self._bestcoinbase:
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bcb = self._bestcoinbase
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reward = sum(vout["value"] for vout in bcb["vout"])
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# TODO: if chain is regtest, this is different
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halvings = bb["height"] // 210000
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block_subsidy = Decimal(50 * (0.5 ** halvings))
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total_fees = Decimal(reward) - block_subsidy
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self._pad.addstr(4, 1, "Block reward: {:.6f} BTC".format(
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reward))
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if len(bb["tx"]) > 1:
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if reward > 0:
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fee_pct = total_fees * 100 / Decimal(reward)
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else:
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fee_pct = 0
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mbtc_per_tx = (total_fees / (len(bb["tx"]) - 1)) * 1000
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# 80 bytes for the block header.
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total_tx_size = bb["size"] - 80 - bcb["size"]
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if total_tx_size > 0:
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sat_per_kb = ((total_fees * 1024) / total_tx_size) * 100000000
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else:
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sat_per_kb = 0
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self._pad.addstr(4, 34, "Fees: {: 8.6f} BTC ({: 6.2f}%, avg {: 6.2f} mBTC/tx, ~{: 7.0f} sat/kB)".format(total_fees, fee_pct, mbtc_per_tx, sat_per_kb))
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self._pad.addstr(6, 1, "Diff: {:,}".format(
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int(bb["difficulty"]),
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))
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self._pad.addstr(7, 1, "Chain work: 2**{:.6f}".format(
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math.log(int(bb["chainwork"], 16), 2),
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))
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self._pad.refresh(0, 0, 4, 0, 24, 100)
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async def draw(self):
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with await self._lock:
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self._draw()
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async def on_bestblockhash(self, key, obj):
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try:
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bestblockhash = obj["result"]
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except KeyError:
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return
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draw = False
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with await self._lock:
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if bestblockhash != self._bestblockhash:
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draw = True
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self._bestblockhash = bestblockhash
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j = await self._client.request("getblockheader", [bestblockhash])
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self._bestblockheader = j["result"]
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j = await self._client.request("getblock", [bestblockhash])
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self._bestblock = j["result"]
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j = await self._client.request("getrawtransaction", [j["result"]["tx"][0], 1])
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self._bestcoinbase = j["result"]
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if draw and self._visible:
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await self.draw()
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async def on_tick(self, dt):
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with await self._lock:
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self._dt = dt
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if self._visible:
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await self.draw()
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async def on_mode_change(self, newmode):
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if newmode != "monitor":
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self._visible = False
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return
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self._visible = True
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await self.draw()
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