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api: Add replaced msg note on StateSearchMsg

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This commit is contained in:
Łukasz Magiera 2021-03-18 19:46:26 +01:00
parent 80ecec7532
commit c5ba875fe3
2 changed files with 30 additions and 0 deletions
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14
api/api_full.go
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@ -403,6 +403,20 @@ type FullNode interface {
// StateSectorPartition finds deadline/partition with the specified sector
StateSectorPartition(ctx context.Context, maddr address.Address, sectorNumber abi.SectorNumber, tok types.TipSetKey) (*miner.SectorLocation, error)
// StateSearchMsg searches for a message in the chain, and returns its receipt and the tipset where it was executed
//
// NOTE: If a replacing message is found on chain, this method will return
// a MsgLookup for the replacing message - the MsgLookup.Message will be a different
// CID than the one provided in the 'cid' param, MsgLookup.Receipt will contain the
// result of the execution of the replacing message.
//
// If the caller wants to ensure that exactly the requested message was executed,
// they MUST check that MsgLookup.Message is equal to the provided 'cid'.
// Without this check both the requested and original message may appear as
// successfully executed on-chain, which may look like a double-spend.
//
// A replacing message is a message with a different CID, any of Gas values, and
// different signature, but with all other parameters matching (source/destination,
// nonce, params, etc.)
StateSearchMsg(context.Context, cid.Cid) (*MsgLookup, error)
// StateSearchMsgLimited looks back up to limit epochs in the chain for a message, and returns its receipt and the tipset where it was executed
//

16
documentation/en/api-methods.md
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@ -3695,6 +3695,8 @@ for the replacing message - if the caller needs the receipt for exactly the
requested message, use StateSearchMsg().Receipt, and check that MsgLookup.Message
is matching the requseted CID
DEPRECATED: Use StateSearchMsg, this method won't be supported in v1 API
Perms: read
@ -4551,6 +4553,20 @@ Response:
### StateSearchMsg
StateSearchMsg searches for a message in the chain, and returns its receipt and the tipset where it was executed
NOTE: If a replacing message is found on chain, this method will return
a MsgLookup for the replacing message - the MsgLookup.Message will be a different
CID than the one provided in the 'cid' param, MsgLookup.Receipt will contain the
result of the execution of the replacing message.
If the caller wants to ensure that exactly the requested message was executed,
they MUST check that MsgLookup.Message is equal to the provided 'cid'.
Without this check both the requested and original message may appear as
successfully executed on-chain, which may look like a double-spend.
A replacing message is a message with a different CID, any of Gas values, and
different signature, but with all other parameters matching (source/destination,
nonce, params, etc.)
Perms: read