lightningd: deprecate decodepay.

It only works on BOLT11, and has long been replaced by the more
generic "decode".

Removing it will stop the confusion!

(Note: documentation claims it was introduced in 23.08, but that was
 wrong, as it's been in CLN since the beginning).

[ Fixup from: niftynei <niftynei@gmail.com> ]
Fixes: #6419
Changelog-Deprecated: JSON-RPC: `decodepay`: use `decode`.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

contrib/msggen/msggen/schema.json

@@ -10523,9 +10523,15 @@
       "$schema": "../rpc-schema-draft.json",
       "type": "object",
       "added": "v23.05",
+      "depecated": [
+        "v24.11",
+        "v25.11"
+      ],
       "rpc": "decodepay",
       "title": "Command for decoding a bolt11 string (low-level)",
       "description": [
+        "WARNING: deprecated: use *decode* which also handles bolt12.",
+        "",
         "The **decodepay** RPC command checks and parses a *bolt11* string as specified by the BOLT 11 specification."
       ],
       "request": {

contrib/pyln-testing/pyln/testing/utils.py

@@ -1212,8 +1212,7 @@ def pay(self, dst, amt, label=None, route=False):
 
         # make an invoice
         inv = dst.rpc.invoice(amt, label, label)
-        # FIXME: pre 0.10.1 invoice calls didn't have payment_secret field
-        psecret = dst.rpc.decodepay(inv['bolt11'])['payment_secret']
+        psecret = inv['payment_secret']
         rhash = inv['payment_hash']
         invoices = dst.rpc.listinvoices(label)['invoices']
         assert len(invoices) == 1 and invoices[0]['status'] == 'unpaid'

doc/developers-guide/deprecations.md

@@ -33,7 +33,7 @@ hidden: false
 | experimental-onion-messages          | Config             | v24.08           | v25.02         | Now the default                                                                                                                        |
 | decode.blinding                      | Field              | v24.11           | v25.05         | Renamed to `first_path_key` in BOLT 4 (available in `decode` from v24.11)                                                              |
 | onion_message_recv.blinding          | Hook Field         | v24.11           | v25.05         | Renamed to `first_path_key` in BOLT 4 (available in hook from v24.11)                                                                  |
-
+| decodepay                            | Command            | v24.11           | v25.11         | Use `decode` which is more powerful (since v23.05)                                                                                     |
 
 Inevitably there are features which need to change: either to be generalized, or removed when they can no longer be supported.
 

doc/schemas/lightning-decodepay.json

@@ -2,9 +2,15 @@
   "$schema": "../rpc-schema-draft.json",
   "type": "object",
   "added": "v23.05",
+  "depecated": [
+    "v24.11",
+    "v25.11"
+  ],
   "rpc": "decodepay",
   "title": "Command for decoding a bolt11 string (low-level)",
   "description": [
+    "WARNING: deprecated: use *decode* which also handles bolt12.",
+    "",
     "The **decodepay** RPC command checks and parses a *bolt11* string as specified by the BOLT 11 specification."
   ],
   "request": {

lightningd/invoice.c

@@ -1585,6 +1585,8 @@ static struct command_result *json_decodepay(struct command *cmd,
 static const struct json_command decodepay_command = {
 	"decodepay",
 	json_decodepay,
+	.depr_start = "v24.11",
+	.depr_end = "v25.11"
 };
 AUTODATA(json_command, &decodepay_command);
 

tests/autogenerate-rpc-examples.py

@@ -700,7 +700,6 @@ def generate_utils_examples(l1, l2, l3, l4, l5, l6, c23, c34, inv_l11, inv_l22,
         update_example(node=l2, method='signmessage', params={'message': 'message for you'})
         update_example(node=l2, method='checkmessage', params={'message': 'testcase to check new rpc error', 'zbase': 'd66bqz3qsku5fxtqsi37j11pci47ydxa95iusphutggz9ezaxt56neh77kxe5hyr41kwgkncgiu94p9ecxiexgpgsz8daoq4tw8kj8yx', 'pubkey': '03be3b0e9992153b1d5a6e1623670b6c3663f72ce6cf2e0dd39c0a373a7de5a3b7'})
         update_example(node=l2, method='checkmessage', params={'message': 'this is a test!', 'zbase': 'd6tqaeuonjhi98mmont9m4wag7gg4krg1f4txonug3h31e9h6p6k6nbwjondnj46dkyausobstnk7fhyy998bhgc1yr98dfmhb4k54d7'})
-        update_example(node=l2, method='decodepay', params={'bolt11': inv_l11['bolt11']})
         update_example(node=l2, method='decode', params=[rune_l21['rune']])
         update_example(node=l2, method='decode', params=[inv_l22['bolt11']])
 

tests/test_cln_rs.py

@@ -375,12 +375,6 @@ def test_grpc_decode(node_factory):
         label="label",
     ))
 
-    res = l1.grpc.DecodePay(clnpb.DecodepayRequest(
-        bolt11=inv.bolt11
-    ))
-    # If we get here we're good, conversions work
-    print(res)
-
     res = l1.grpc.Decode(clnpb.DecodeRequest(
         string=inv.bolt11
     ))

tests/test_invoices.py

@@ -24,7 +24,8 @@ def test_invoice(node_factory, chainparams):
     l1.daemon.wait_for_log(r': "{}:invoice#[0-9]*/cln:listincoming#[0-9]*"\[OUT\]'.format(myname))
 
     after = int(time.time())
-    b11 = l1.rpc.decodepay(inv['bolt11'])
+    b11 = l1.rpc.decode(inv['bolt11'])
+    assert b11['type'] == 'bolt11 invoice'
     assert b11['currency'] == chainparams['bip173_prefix']
     assert b11['created_at'] >= before
     assert b11['created_at'] <= after
@@ -63,7 +64,7 @@ def test_invoice(node_factory, chainparams):
 
     # Test cltv option.
     inv = l1.rpc.invoice(123000, 'label3', 'description', 3700, cltv=99)
-    b11 = l1.rpc.decodepay(inv['bolt11'])
+    b11 = l1.rpc.decode(inv['bolt11'])
     assert b11['min_final_cltv_expiry'] == 99
 
 
@@ -103,7 +104,7 @@ def test_invoice_weirdstring(node_factory):
     inv = only_one(l1.rpc.listinvoices()['invoices'])
     assert inv['label'] == weird_label
 
-    b11 = l1.rpc.decodepay(inv['bolt11'])
+    b11 = l1.rpc.decode(inv['bolt11'])
     assert b11['description'] == weird_desc
 
     # Can delete by weird label.
@@ -123,7 +124,7 @@ def test_invoice_weirdstring(node_factory):
     inv = only_one(l1.rpc.listinvoices()['invoices'])
     assert inv['label'] == str(weird_label)
 
-    b11 = l1.rpc.decodepay(inv['bolt11'])
+    b11 = l1.rpc.decode(inv['bolt11'])
     assert b11['description'] == weird_desc
 
     # Can delete by weird label.
@@ -167,7 +168,7 @@ def test_invoice_routeboost(node_factory, bitcoind):
     assert 'warning_deadends' not in inv
     assert 'warning_mpp' not in inv
     # Route array has single route with single element.
-    r = only_one(only_one(l2.rpc.decodepay(inv['bolt11'])['routes']))
+    r = only_one(only_one(l2.rpc.decode(inv['bolt11'])['routes']))
     assert r['pubkey'] == l2.info['id']
     assert r['short_channel_id'] == l3.rpc.listpeerchannels(l2.info['id'])['channels'][0]['short_channel_id']
     assert r['fee_base_msat'] == 1
@@ -241,7 +242,7 @@ def test_invoice_routeboost_private(node_factory, bitcoind):
     assert 'warning_deadends' not in inv
     assert 'warning_mpp' not in inv
     # Route array has single route with single element.
-    r = only_one(only_one(l1.rpc.decodepay(inv['bolt11'])['routes']))
+    r = only_one(only_one(l1.rpc.decode(inv['bolt11'])['routes']))
     assert r['pubkey'] == l1.info['id']
     # It uses our private alias!
     assert r['short_channel_id'] != l1.rpc.listchannels()['channels'][0]['short_channel_id']
@@ -257,7 +258,7 @@ def test_invoice_routeboost_private(node_factory, bitcoind):
     assert 'warning_offline' not in inv
     assert 'warning_deadends' not in inv
     assert 'warning_mpp' not in inv
-    assert 'routes' not in l1.rpc.decodepay(inv['bolt11'])
+    assert 'routes' not in l1.rpc.decode(inv['bolt11'])
 
     # If we ask for it, we get it.
     inv = l2.rpc.invoice(amount_msat=123456, label="inv1a", description="?", exposeprivatechannels=scid)
@@ -267,7 +268,7 @@ def test_invoice_routeboost_private(node_factory, bitcoind):
     assert 'warning_deadends' not in inv
     assert 'warning_mpp' not in inv
     # Route array has single route with single element.
-    r = only_one(only_one(l1.rpc.decodepay(inv['bolt11'])['routes']))
+    r = only_one(only_one(l1.rpc.decode(inv['bolt11'])['routes']))
     assert r['pubkey'] == l1.info['id']
     assert r['short_channel_id'] == alias
     assert r['fee_base_msat'] == 1
@@ -282,7 +283,7 @@ def test_invoice_routeboost_private(node_factory, bitcoind):
     assert 'warning_deadends' not in inv
     assert 'warning_mpp' not in inv
     # Route array has single route with single element.
-    r = only_one(only_one(l1.rpc.decodepay(inv['bolt11'])['routes']))
+    r = only_one(only_one(l1.rpc.decode(inv['bolt11'])['routes']))
     assert r['pubkey'] == l1.info['id']
     assert r['short_channel_id'] == alias
     assert r['fee_base_msat'] == 1
@@ -314,7 +315,7 @@ def test_invoice_routeboost_private(node_factory, bitcoind):
     assert 'warning_deadends' not in inv
     assert 'warning_mpp' not in inv
     # Route array has single route with single element.
-    r = only_one(only_one(l1.rpc.decodepay(inv['bolt11'])['routes']))
+    r = only_one(only_one(l1.rpc.decode(inv['bolt11'])['routes']))
     assert r['pubkey'] == l1.info['id']
     assert r['short_channel_id'] == alias
     assert r['fee_base_msat'] == 1
@@ -328,7 +329,7 @@ def test_invoice_routeboost_private(node_factory, bitcoind):
     assert 'warning_deadends' not in inv
     assert 'warning_mpp' not in inv
     # Route array has single route with single element.
-    r = only_one(only_one(l1.rpc.decodepay(inv['bolt11'])['routes']))
+    r = only_one(only_one(l1.rpc.decode(inv['bolt11'])['routes']))
     assert r['pubkey'] == l1.info['id']
     assert r['short_channel_id'] == alias
     assert r['fee_base_msat'] == 1
@@ -351,7 +352,7 @@ def test_invoice_routeboost_private(node_factory, bitcoind):
     assert 'warning_deadends' not in inv
     assert 'warning_mpp' not in inv
     # Route array has single route with single element.
-    r = only_one(only_one(l1.rpc.decodepay(inv['bolt11'])['routes']))
+    r = only_one(only_one(l1.rpc.decode(inv['bolt11'])['routes']))
     assert r['pubkey'] == l1.info['id']
     assert r['short_channel_id'] == alias
     assert r['fee_base_msat'] == 1
@@ -371,7 +372,7 @@ def test_invoice_routeboost_private(node_factory, bitcoind):
     assert 'warning_deadends' not in inv
     assert 'warning_mpp' not in inv
     # Route array has single route with single element.
-    r = only_one(only_one(l1.rpc.decodepay(inv['bolt11'])['routes']))
+    r = only_one(only_one(l1.rpc.decode(inv['bolt11'])['routes']))
     assert r['pubkey'] == l1.info['id']
     assert r['short_channel_id'] == alias
     assert r['fee_base_msat'] == 1
@@ -535,11 +536,11 @@ def test_signinvoice(node_factory, executor):
 
     # Create an invoice for l1
     inv1 = l1.rpc.invoice(1000, 'inv1', 'inv1')['bolt11']
-    assert l1.rpc.decodepay(inv1)['payee'] == l1.info['id']
+    assert l1.rpc.decode(inv1)['payee'] == l1.info['id']
 
     # Have l2 re-sign the invoice
     inv2 = l2.rpc.signinvoice(inv1)['bolt11']
-    assert l1.rpc.decodepay(inv2)['payee'] == l2.info['id']
+    assert l1.rpc.decode(inv2)['payee'] == l2.info['id']
 
 
 def test_waitanyinvoice_reversed(node_factory, executor):
@@ -570,7 +571,8 @@ def test_waitanyinvoice_reversed(node_factory, executor):
 def test_decode_unknown(node_factory):
     l1 = node_factory.get_node()
 
-    b11 = l1.rpc.decodepay('lntb30m1pw2f2yspp5s59w4a0kjecw3zyexm7zur8l8n4scw674w8sftjhwec33km882gsdpa2pshjmt9de6zqun9w96k2um5ypmkjargypkh2mr5d9cxzun5ypeh2ursdae8gxqruyqvzddp68gup69uhnzwfj9cejuvf3xshrwde68qcrswf0d46kcarfwpshyaplw3skw0tdw4k8g6tsv9e8gu2etcvsym36pdjpz04wm9nn96f9ntc3t3h5r08pe9d62p3js5wt5rkurqnrl7zkj2fjpvl3rmn7wwazt80letwxlm22hngu8n88g7hsp542qpl')
+    b11 = l1.rpc.decode('lntb30m1pw2f2yspp5s59w4a0kjecw3zyexm7zur8l8n4scw674w8sftjhwec33km882gsdpa2pshjmt9de6zqun9w96k2um5ypmkjargypkh2mr5d9cxzun5ypeh2ursdae8gxqruyqvzddp68gup69uhnzwfj9cejuvf3xshrwde68qcrswf0d46kcarfwpshyaplw3skw0tdw4k8g6tsv9e8gu2etcvsym36pdjpz04wm9nn96f9ntc3t3h5r08pe9d62p3js5wt5rkurqnrl7zkj2fjpvl3rmn7wwazt80letwxlm22hngu8n88g7hsp542qpl')
+    assert b11['type'] == 'bolt11 invoice'
     assert b11['currency'] == 'tb'
     assert b11['created_at'] == 1554294928
     assert b11['payment_hash'] == '850aeaf5f69670e8889936fc2e0cff3ceb0c3b5eab8f04ae57767118db673a91'
@@ -596,7 +598,7 @@ def test_amountless_invoice(node_factory):
     assert(len(i) == 1)
     assert('amount_received_msat' not in i[0])
     assert(i[0]['status'] == 'unpaid')
-    details = l1.rpc.decodepay(inv)
+    details = l1.rpc.decode(inv)
     assert('msatoshi' not in details)
 
     l1.rpc.pay(inv, amount_msat=1337)
@@ -781,7 +783,7 @@ def test_invoice_deschash(node_factory, chainparams):
     inv = l2.rpc.invoice(42, 'label', 'One piece of chocolate cake, one icecream cone, one pickle, one slice of swiss cheese, one slice of salami, one lollypop, one piece of cherry pie, one sausage, one cupcake, and one slice of watermelon', deschashonly=True)
     assert '8yjmdan79s6qqdhdzgynm4zwqd5d7xmw5fk98klysy043l2ahrqs' in inv['bolt11']
 
-    b11 = l2.rpc.decodepay(inv['bolt11'])
+    b11 = l2.rpc.decode(inv['bolt11'])
     assert 'description' not in b11
     assert b11['description_hash'] == '3925b6f67e2c340036ed12093dd44e0368df1b6ea26c53dbe4811f58fd5db8c1'
 
@@ -864,7 +866,7 @@ def test_unified_invoices(node_factory, executor, bitcoind):
     l1, l2 = node_factory.line_graph(2, opts={'invoices-onchain-fallback': None})
     amount_sat = 1000
     inv = l1.rpc.invoice(amount_sat * 1000, "inv1", "test_unified_invoices")
-    b11 = l1.rpc.decodepay(inv['bolt11'])
+    b11 = l1.rpc.decode(inv['bolt11'])
 
     assert len(b11['fallbacks']) == 1
 

tests/test_misc.py

@@ -3733,21 +3733,21 @@ def test_field_filter(node_factory, chainparams):
     inv = l1.rpc.invoice(123000, 'label', 'description', 3700, [addr1, addr2])
 
     # Simple case: single field
-    dec = l1.rpc.call('decodepay', {'bolt11': inv['bolt11']}, filter={"currency": True})
+    dec = l1.rpc.call('decode', {'string': inv['bolt11']}, filter={"currency": True})
     assert dec == {"currency": chainparams['bip173_prefix']}
 
     # Use context manager:
     with l1.rpc.reply_filter({"currency": True}):
-        dec = l1.rpc.decodepay(bolt11=inv['bolt11'])
+        dec = l1.rpc.decode(string=inv['bolt11'])
     assert dec == {"currency": chainparams['bip173_prefix']}
 
     # Two fields
-    dec = l1.rpc.call('decodepay', {'bolt11': inv['bolt11']}, filter={"currency": True, "payment_hash": True})
+    dec = l1.rpc.call('decode', {'string': inv['bolt11']}, filter={"currency": True, "payment_hash": True})
     assert dec == {"currency": chainparams['bip173_prefix'],
                    "payment_hash": inv['payment_hash']}
 
     # Nested fields
-    dec = l1.rpc.call('decodepay', {'bolt11': inv['bolt11']},
+    dec = l1.rpc.call('decode', {'string': inv['bolt11']},
                       filter={"currency": True,
                               "payment_hash": True,
                               "fallbacks": [{"type": True}]})
@@ -3756,12 +3756,12 @@ def test_field_filter(node_factory, chainparams):
                    "fallbacks": [{"type": 'P2WPKH'}, {"type": 'P2SH'}]}
 
     # Nonexistent fields.
-    dec = l1.rpc.call('decodepay', {'bolt11': inv['bolt11']},
+    dec = l1.rpc.call('decode', {'string': inv['bolt11']},
                       filter={"foobar": True})
     assert dec == {}
 
     # Bad filters
-    dec = l1.rpc.call('decodepay', {'bolt11': inv['bolt11']},
+    dec = l1.rpc.call('decode', {'string': inv['bolt11']},
                       filter={"currency": True,
                               "payment_hash": True,
                               "fallbacks": {'type': True}})

tests/test_opening.py

@@ -7,7 +7,6 @@
 from pyln.testing.utils import FUNDAMOUNT
 
 from pathlib import Path
-from pprint import pprint
 import pytest
 import re
 import unittest
@@ -1665,8 +1664,7 @@ def test_zeroconf_open(bitcoind, node_factory):
     wait_for(lambda: l3.rpc.listchannels() != {'channels': []})
 
     inv = l3.rpc.invoice(10**8, 'lbl', 'desc')['bolt11']
-    details = l2.rpc.decodepay(inv)
-    pprint(details)
+    details = l2.rpc.decode(inv)
     assert('routes' in details and len(details['routes']) == 1)
     hop = details['routes'][0][0]  # First (and only) hop of hint 0
     l2alias = only_one(l2.rpc.listpeerchannels(l3.info['id'])['channels'])['alias']['local']
@@ -1679,7 +1677,6 @@ def test_zeroconf_open(bitcoind, node_factory):
     l3.daemon.wait_for_log(r'Balance [0-9]+msat -> [0-9]+msat')
 
     # Inverse payments should work too
-    pprint(l3.rpc.listpeers())
     inv = l2.rpc.invoice(10**5, 'lbl', 'desc')['bolt11']
     l3.rpc.pay(inv)