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Merge #18467: rpc: Improve documentation and return value of settxfee

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38677274f9 rpc: settxfee respects -maxtxfee wallet setting (Fabian Jahr)
bda84a08a0 rpc: Add documentation for deactivating settxfee (Fabian Jahr)

Pull request description:

  ~~Closes 18315~~

  `settxfee` can be deactivated by passing 0 as the fee. That does not seem to be documented for the user so this PR adds it in the description. The return value of a simple boolean seems also too simplified given the multiple dimensions that this deactivation feature enables. I.e. it does not seem intuitive if the returned boolean shows that the call succeeded or if means that `settxfee` is active. My suggested solution is to change the return value to a JSON object that included the "active" state and the currently set fee rate.

  Examples:
  ```
  $ src/bitcoin-cli settxfee 0.0000000
  {
    "active": false,
    "fee_rate": "0.00000000 BTC/kB"
  }
  $ src/bitcoin-cli settxfee 0.0001
  {
    "active": true,
    "fee_rate": "0.00010000 BTC/kB"
  }
  ```

ACKs for top commit:
  MarcoFalke:
    ACK 38677274f9, seems useful to error out early instead of later #16257 🕍
  jonatack:
    ACK 38677274f9
  meshcollider:
    LGTM, utACK 38677274f9

Tree-SHA512: 642813b5cf6612abb4b6cb63728081a6bd1659d809e0149c8f56060b6da7253fee989b3b202854f3051df3773c966799af30b612648c466b099f00590f356548
This commit is contained in:
MarcoFalke
2020-04-17 07:55:36 -04:00
parent c189bfd260 38677274f9
commit c2e53ff064
3 changed files with 16 additions and 5 deletions
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10
test/functional/wallet_bumpfee.py
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@ -82,7 +82,6 @@ class BumpFeeTest(BitcoinTestFramework):
test_notmine_bumpfee_fails(self, rbf_node, peer_node, dest_address)
test_bumpfee_with_descendant_fails(self, rbf_node, rbf_node_address, dest_address)
test_dust_to_fee(self, rbf_node, dest_address)
test_settxfee(self, rbf_node, dest_address)
test_watchonly_psbt(self, peer_node, rbf_node, dest_address)
test_rebumping(self, rbf_node, dest_address)
test_rebumping_not_replaceable(self, rbf_node, dest_address)
@ -90,6 +89,7 @@ class BumpFeeTest(BitcoinTestFramework):
test_bumpfee_metadata(self, rbf_node, dest_address)
test_locked_wallet_fails(self, rbf_node, dest_address)
test_change_script_match(self, rbf_node, dest_address)
test_settxfee(self, rbf_node, dest_address)
test_maxtxfee_fails(self, rbf_node, dest_address)
# These tests wipe out a number of utxos that are expected in other tests
test_small_output_with_feerate_succeeds(self, rbf_node, dest_address)
@ -286,9 +286,15 @@ def test_settxfee(self, rbf_node, dest_address):
assert_greater_than(Decimal("0.00001000"), abs(requested_feerate - actual_feerate))
rbf_node.settxfee(Decimal("0.00000000")) # unset paytxfee
# check that settxfee respects -maxtxfee
self.restart_node(1, ['-maxtxfee=0.000025'] + self.extra_args[1])
assert_raises_rpc_error(-8, "txfee cannot be more than wallet max tx fee", rbf_node.settxfee, Decimal('0.00003'))
self.restart_node(1, self.extra_args[1])
rbf_node.walletpassphrase(WALLET_PASSPHRASE, WALLET_PASSPHRASE_TIMEOUT)
def test_maxtxfee_fails(self, rbf_node, dest_address):
self.log.info('Test that bumpfee fails when it hits -matxfee')
self.log.info('Test that bumpfee fails when it hits -maxtxfee')
# size of bumped transaction (p2wpkh, 1 input, 2 outputs): 141 vbytes
# expected bump fee of 141 vbytes * 0.00200000 BTC / 1000 vbytes = 0.00002820 BTC
# which exceeds maxtxfee and is expected to raise