new utility: mmnode-txfind

mmnode-blocks-info

@@ -1,7 +1,7 @@
 #!/usr/bin/env python3
 #
 # mmgen = Multi-Mode GENerator, command-line Bitcoin cold storage solution
-# Copyright (C)2013-2020 The MMGen Project <mmgen@tuta.io>
+# Copyright (C)2013-2021 The MMGen Project <mmgen@tuta.io>
 #
 # This program is free software: you can redistribute it and/or modify it under
 # the terms of the GNU General Public License as published by the Free Software
@@ -28,7 +28,7 @@ from decimal import Decimal
 opts_data = {
 	'sets': [('raw_miner_info',True,'miner_info',True)],
 	'text': {
-		'desc':    'Display information about or find a transaction within a range of blocks',
+		'desc':    'Display information about a range of blocks',
 		'usage':   '[opts] +<last n blocks>|<block num>|<block num range>',
 		'options': """
 -h, --help            Print this help message
@@ -39,7 +39,6 @@ opts_data = {
 -o, --fields=         Display the specified fields
 -s, --summary         Print the summary only
 -S, --no-summary      Don't print the summary
--t, --transaction=t   Search for transaction 't' in specified block range
 
 If no block number is specified, the current block is assumed
 """
@@ -272,37 +271,6 @@ class BlocksInfoOverview(BlocksInfo):
 					self.sum_fs.format('Avg conf time:', f'{ac//60}:{ac%60:02}')
 				)
 
-class BlocksInfoTxFind(BlocksInfo):
-
-	found_tx = False
-
-	def post_init(self):
-		if len(opt.transaction) != 64 or not is_hex_str(opt.transaction):
-			die(2,f'{opt.transaction}: invalid transaction id')
-
-	async def process_block(self,height,H):
-		if opt.transaction in (await c.call('getblock',H))['tx']:
-			Msg('\rRequested transaction is in block {} ({} confirmations)'.format(height,c.blockcount-height+1))
-			return True
-		msg_r('\rChecking block {} '.format(height))
-
-	async def print_summary(self):
-		if self.found_tx:
-			try:
-				await c.call('getmempoolentry',opt.transaction) # ,on_fail='silent')):
-			except:
-				Msg('\rTransaction not found in block range {}-{} or in mempool'.format(self.first,self.last))
-			else:
-				Msg('\rTransaction is in mempool')
-
-	async def run(self):
-		for height in range(self.first,self.last+1):
-			H = await c.call('getblockhash',height)
-			if await self.process_block(height,H): # returns True when finished
-				break
-		else:
-			self.found_tx = True
-
 class BlocksInfoHashes(BlocksInfo):
 
 	def print_header(self):
@@ -327,9 +295,7 @@ async def main():
 	global c
 	c = await rpc_init(proto)
 
-	if opt.transaction:
-		m = BlocksInfoTxFind()
-	elif opt.hashes:
+	if opt.hashes:
 		m = BlocksInfoHashes()
 	else:
 		m = BlocksInfoOverview()

mmnode-txfind

@@ -0,0 +1,94 @@
+#!/usr/bin/env python3
+#
+# mmgen = Multi-Mode GENerator, command-line Bitcoin cold storage solution
+# Copyright (C)2013-2021 The MMGen Project <mmgen@tuta.io>
+#
+# This program is free software: you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation, either version 3 of the License, or (at your option) any later
+# version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+"""
+mmgen-txfind: Find a transaction in the blockchain or mempool
+"""
+
+from mmgen.common import *
+
+opts_data = {
+	'text': {
+		'desc':    'Find a transaction in the blockchain or mempool',
+		'usage':   '[opts] <transaction ID>',
+		'options': """
+-h, --help      Print this help message
+--, --longhelp  Print help message for long options (common options)
+-q, --quiet     Be quieter
+-v, --verbose   Be more verbose
+""",
+	'notes': """
+If transaction is in blockchain, the block number and number of confirmations
+are displayed.
+
+Requires --txindex for correct operation.
+"""
+	}
+}
+
+msg_data = {
+	'normal': {
+		'none':  'Transaction not found in blockchain or mempool',
+		'block': 'Transaction is in block {b} ({c} confirmations)',
+		'mem':   'Transaction is in mempool',
+	},
+	'quiet': {
+		'none':  'None',
+		'block': '{b} {c}',
+		'mem':   'mempool',
+	}
+}
+
+async def main(txid):
+	if len(txid) != 64 or not is_hex_str(txid):
+		die(2,f'{txid}: invalid transaction ID')
+
+	if opt.verbose:
+		msg(f'TxID: {txid}')
+
+	from mmgen.protocol import init_proto_from_opts
+	proto = init_proto_from_opts()
+
+	from mmgen.rpc import rpc_init
+	c = await rpc_init(proto)
+
+	exitval = 0
+	try:
+		tip1 = await c.call('getblockcount')
+		ret = await c.call('getrawtransaction',txid,True)
+		tip2 = await c.call('getblockcount')
+	except:
+		Msg('\r' + msgs['none'])
+		exitval = 1
+	else:
+		assert tip1 == tip2, 'Blockchain is updating.  Try again later'
+		if 'confirmations' in ret:
+			confs = ret['confirmations']
+			Msg('\r' + msgs['block'].format(b = tip1 - confs + 1, c = confs))
+		else:
+			Msg('\r' + msgs['mem'])
+
+	return exitval
+
+cmd_args = opts.init(opts_data)
+msgs = msg_data['quiet' if opt.quiet else 'normal']
+
+if len(cmd_args) != 1:
+	die(1,'One transaction ID must be specified')
+
+sys.exit(run_session(main(cmd_args[0])))