Files
bitcoin/test/functional/test_framework
Ryan Ofsky a4157fc24a Merge bitcoin/bitcoin#33966: refactor: disentangle miner startup defaults from runtime options
1e5d3b4f0d doc: add release note for mining option validation (Sjors Provoost)
0317f52022 ci: enforce iwyu for touched files (Sjors Provoost)
8c58f63578 refactor: have mining files include what they use (Sjors Provoost)
3bb6498fb0 mining: store block create options in NodeContext (Sjors Provoost)
4637cd157d mining: reject invalid block create options (Sjors Provoost)
8daac1d6eb mining: add block create option helpers (Sjors Provoost)
128da7c3ff miner: add block_max_weight to BlockCreateOptions (Sjors Provoost)
fa81e51eae mining: parse block creation args in mining_args (Sjors Provoost)
020166080c mining: use interface for tests, bench and fuzzers (Sjors Provoost)
44082bea47 interfaces: make Mining use const NodeContext (Sjors Provoost)
d4368e059c move-only: add node/mining_types.h (Sjors Provoost)
6aeb1fbea2 test: cover IPC blockmaxweight policy (Sjors Provoost)
63b23ea1e9 test: regression test for waitNext mining policy (Sjors Provoost)
24750f8b31 test: add createNewBlock failure helper (Sjors Provoost)
63ee9cd15b test: misc interface_ipc_mining.py improvements (Sjors Provoost)

Pull request description:

  Although this PR is primarily a refactor, _there are behavior changes_ documented in the release note:
  - the IPC mining interface now rejects out-of-range block template options instead of silently clamping them;
  - startup now rejects `-blockmaxweight` values lower than `-blockreservedweight`, instead of allowing them to be clamped later.

  The interaction between node startup options like `-blockreservedweight` and runtime options, especially those passed via IPC, is confusing.

  They're combined in `BlockAssembler::Options`, which this PR gets rid of in favour of `BlockCreateOptions`.

  `BlockCreateOptions` is used by interface clients. As before, IPC clients have access to a safe / sane subset, whereas RPC and test code can use all fields. The same type is also used to store mining defaults parsed once during node startup in `NodeContext`.

  The maximum block weight setting (`block_max_weight`) is optional. When read from startup options it matches `-blockmaxweight`; when provided by callers it is a runtime override. `Merge()` fills unset fields from startup defaults while preserving caller-provided values.

  This all happens in commits `mining: add block create option helpers` and `mining: store block create options in NodeContext`, and requires some preparation to keep things easy to review.

  We get rid of `BlockAssembler::Options` but this is used in many tests. Since large churn is inevitable, we might as well switch all tests, bench and fuzzers over to the Mining interface. The `mining: use interface for tests, bench and fuzzers` commit does that, dramatically reducing direct use of `BlockAssembler`. Two exceptions are documented in the commit message. Because `test_block_validity` wasn't available via the interface and the block_assemble benchmark needs it, it's moved from `BlockAssembler::Options` to `BlockCreateOptions` (still not exposed via IPC).

  We need access to mining related structs from both the miner and node initialization code. To avoid having to pull in all of `BlockAssembler` for the latter, the `move-only: add node/mining_types.h` commit introduces `node/mining_types.h` and moves `BlockCreateOptions`, `BlockWaitOptions` and `BlockCheckOptions` there from `src/node/types.h`.

  I considered also moving `DEFAULT_BLOCK_MAX_WEIGHT`, `DEFAULT_BLOCK_RESERVED_WEIGHT`, `MINIMUM_BLOCK_RESERVED_WEIGHT` and `DEFAULT_BLOCK_MIN_TX_FEE` there from `policy.h`, since they are distinct from relay policy and not needed by the kernel. But this seems more appropriate for a follow-up and requires additional discussion.

  ---

  I kept variable renaming and other formatting changes to a minimum to ease review with `--color-moved=dimmed-zebra`.

  ## Commit summary

  Tests and test cleanup:
  - `test: misc interface_ipc_mining.py improvements`
  - `test: add assert_create_fails helper`
  - `test: regression test for waitNext mining policy`
  - `test: cover IPC blockmaxweight policy`

  Refactoring test/bench/fuzz callers:
  - `interfaces: make Mining use const NodeContext`
  - `mining: use interface for tests, bench and fuzzers`

  Moving mining interface types:
  - `move-only: add node/mining_types.h`

  Separating startup defaults from runtime options:
  - `mining: parse block creation args in mining_args`: adds `node/mining_args.{h,cpp}` and moves mining option parsing out of `init.cpp`, without storing the parsed values yet.
  - `miner: add block_max_weight to BlockCreateOptions`: moves the runtime maximum block weight setting into `BlockCreateOptions` as an optional value, so it can later be defaulted from startup args when unset.
  - `mining: add block create option helpers`: centralizes block template option defaulting and merging, removes `BlockAssembler::Options`, and preserves behavior except for dropping the `Specified ` prefix from startup option error messages.
  - `mining: reject invalid block create options`: checks typed `BlockCreateOptions` before block template creation, so invalid runtime options are rejected instead of silently clamped. Startup validation also rejects `-blockmaxweight` values lower than `-blockreservedweight`.
  - `mining: store block create options in NodeContext`: stores the startup mining options in `NodeContext` as `BlockCreateOptions`, so startup defaults and runtime overrides can be merged with the same option type.

  Include hygiene, CI and release note:
  - `refactor: have mining files include what they use`
  - `ci: enforce iwyu for touched files`
  - `doc: add release note for mining option validation`

ACKs for top commit:
  w0xlt:
    reACK 1e5d3b4f0d
  sedited:
    ACK 1e5d3b4f0d
  ryanofsky:
    Code review ACK 1e5d3b4f0d. Looks good, thanks for the updates!

Tree-SHA512: 28c715023cb78f02775caa787b243c994bd0f8ce4559afc8db9301e93400ebbc74963626a4afe65ae15bcc16b9192d051a745839f4c804848d50746ea5a224b4
2026-05-26 08:39:03 -04:00
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