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Add new getcfilters message for utreexo nodes #192

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@alainjr10 alainjr10 commented Jun 28, 2024

This is meant to be just a draft PR

Add support for new getcfilters message called UtreexoCFilter
When a new block is added, a new UtreexoCFilter filter is created and persisted on the node.
This filter is created by serializing the contents of the roots at that height.
When a node receives a getcfilters message, the logic doesn't change much, it handles it almost identical to how it deals with basic filters.

@alainjr10 alainjr10 marked this pull request as draft June 28, 2024 15:11
kcalvinalvin
kcalvinalvin reviewed Jul 2, 2024
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I think maybe creating a new index is a better way of approaching this. With the new index you'd only store the filter header.

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kcalvinalvin commented Jul 18, 2024

Could you make the commits atomic?

Ideally all the changes to each of the packages should be committed together with each commit achieving one single thing.

The change to btcutil/gcs/builder/builder.go could be a single commit. Maybe even the first commit. The change to wire/msgcfilter.go as well.

Then all the changes to the package indexers can be committed. Then the changes to server.go. Then config.go and utreexod.go. Then finally the rpc related files.

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kcalvinalvin commented Jul 19, 2024 

[N] calvin@nixos ~/b/u/utreexod ((296c58f6))> ./utreexod --datadir=. --logdir=. --signet --prune=0 --utreexocfilters
2024-07-19 15:40:47.600 [INF] BTCD: Version 0.3.1-beta
2024-07-19 15:40:47.600 [INF] BTCD: Loading block database from 'signet/blocks_ffldb'
2024-07-19 15:40:47.638 [INF] BTCD: Block database loaded
2024-07-19 15:40:47.640 [INF] INDX: Utreexo C filter index enabled
2024-07-19 15:40:47.641 [INF] INDX: Catching up indexes from height -1 to 0
2024-07-19 15:40:47.641 [INF] BTCD: Gracefully shutting down the database...
2024-07-19 15:40:47.693 [INF] BTCD: Shutdown complete
panic: runtime error: invalid memory address or nil pointer dereference [recovered]
        panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x6f1d73]
        
goroutine 1 [running]:
github.com/utreexo/utreexod/database/ffldb.rollbackOnPanic(0xc000189450)
        /home/calvin/bitcoin-projects/utreexod1/utreexod/database/ffldb/db.go:2221 +0x56
panic({0x9898e0?, 0xf379b0?})
        /nix/store/zg65r8ys8y5865lcwmmybrq5gn30n1az-go-1.21.6/share/go/src/runtime/panic.go:914 +0x21f
github.com/utreexo/utreexod/blockchain.(*BlockChain).IsUtreexoViewActive(0x0)
        /home/calvin/bitcoin-projects/utreexod1/utreexod/blockchain/utreexoviewpoint.go:849 +0x13
github.com/utreexo/utreexod/blockchain/indexers.(*UtreexoCFIndex).fetchUtreexoRoots(0xc00030a060, {0xbeebf0, 0xc000189450}, 0xc0000bec00?)
        /home/calvin/bitcoin-projects/utreexod1/utreexod/blockchain/indexers/utreexocfindex.go:178 +0x32
github.com/utreexo/utreexod/blockchain/indexers.(*UtreexoCFIndex).ConnectBlock(0xbeebf0?, {0xbeebf0, 0xc000189450}, 0x1a?, {0x1a?, 0x10?, 0xc0000bec00?})
        /home/calvin/bitcoin-projects/utreexod1/utreexod/blockchain/indexers/utreexocfindex.go:155 +0x45
github.com/utreexo/utreexod/blockchain/indexers.dbIndexConnectBlock({0xbeebf0, 0xc000189450}, {0xbed2a0, 0xc00030a060}, 0xc000210480, {0x0, 0x0, 0x0})
        /home/calvin/bitcoin-projects/utreexod1/utreexod/blockchain/indexers/manager.go:123 +0x11a
github.com/utreexo/utreexod/blockchain/indexers.(*Manager).Init.func6({0xbeebf0?, 0xc000189450?})
        /home/calvin/bitcoin-projects/utreexod1/utreexod/blockchain/indexers/manager.go:509 +0x3b
github.com/utreexo/utreexod/database/ffldb.(*db).Update(0xc000318000?, 0xc0001d2600)
        /home/calvin/bitcoin-projects/utreexod1/utreexod/database/ffldb/db.go:2278 +0x7e
github.com/utreexo/utreexod/blockchain/indexers.(*Manager).Init(0xc00030a090, 0xbe77a0?, 0xc000318000?)
        /home/calvin/bitcoin-projects/utreexod1/utreexod/blockchain/indexers/manager.go:508 +0xdf7
github.com/utreexo/utreexod/blockchain.New(0xc0002236e0)
        /home/calvin/bitcoin-projects/utreexod1/utreexod/blockchain/chain.go:2525 +0x8c2
main.newServer({0xc00005dd40, 0x1, 0x1}, {0x0, 0x0, 0x0}, {0x0, 0x0, 0x0}, {0xbec1a0, ...}, ...)
        /home/calvin/bitcoin-projects/utreexod1/utreexod/server.go:3474 +0x1945
main.btcdMain(0x0)
        /home/calvin/bitcoin-projects/utreexod1/utreexod/utreexod.go:406 +0xea7
main.main()
        /home/calvin/bitcoin-projects/utreexod1/utreexod/utreexod.go:592 +0x96

The index panics out on start

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alainjr10 commented Jul 19, 2024 

[N] calvin@nixos ~/b/u/utreexod ((296c58f6))> ./utreexod --datadir=. --logdir=. --signet --prune=0 --utreexocfilters
2024-07-19 15:40:47.600 [INF] BTCD: Version 0.3.1-beta
2024-07-19 15:40:47.600 [INF] BTCD: Loading block database from 'signet/blocks_ffldb'
2024-07-19 15:40:47.638 [INF] BTCD: Block database loaded
2024-07-19 15:40:47.640 [INF] INDX: Utreexo C filter index enabled
2024-07-19 15:40:47.641 [INF] INDX: Catching up indexes from height -1 to 0
2024-07-19 15:40:47.641 [INF] BTCD: Gracefully shutting down the database...
2024-07-19 15:40:47.693 [INF] BTCD: Shutdown complete
panic: runtime error: invalid memory address or nil pointer dereference [recovered]
        panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x6f1d73]
        
goroutine 1 [running]:
github.com/utreexo/utreexod/database/ffldb.rollbackOnPanic(0xc000189450)
        /home/calvin/bitcoin-projects/utreexod1/utreexod/database/ffldb/db.go:2221 +0x56
panic({0x9898e0?, 0xf379b0?})
        /nix/store/zg65r8ys8y5865lcwmmybrq5gn30n1az-go-1.21.6/share/go/src/runtime/panic.go:914 +0x21f
github.com/utreexo/utreexod/blockchain.(*BlockChain).IsUtreexoViewActive(0x0)
        /home/calvin/bitcoin-projects/utreexod1/utreexod/blockchain/utreexoviewpoint.go:849 +0x13
github.com/utreexo/utreexod/blockchain/indexers.(*UtreexoCFIndex).fetchUtreexoRoots(0xc00030a060, {0xbeebf0, 0xc000189450}, 0xc0000bec00?)
        /home/calvin/bitcoin-projects/utreexod1/utreexod/blockchain/indexers/utreexocfindex.go:178 +0x32
github.com/utreexo/utreexod/blockchain/indexers.(*UtreexoCFIndex).ConnectBlock(0xbeebf0?, {0xbeebf0, 0xc000189450}, 0x1a?, {0x1a?, 0x10?, 0xc0000bec00?})
        /home/calvin/bitcoin-projects/utreexod1/utreexod/blockchain/indexers/utreexocfindex.go:155 +0x45
github.com/utreexo/utreexod/blockchain/indexers.dbIndexConnectBlock({0xbeebf0, 0xc000189450}, {0xbed2a0, 0xc00030a060}, 0xc000210480, {0x0, 0x0, 0x0})
        /home/calvin/bitcoin-projects/utreexod1/utreexod/blockchain/indexers/manager.go:123 +0x11a
github.com/utreexo/utreexod/blockchain/indexers.(*Manager).Init.func6({0xbeebf0?, 0xc000189450?})
        /home/calvin/bitcoin-projects/utreexod1/utreexod/blockchain/indexers/manager.go:509 +0x3b
github.com/utreexo/utreexod/database/ffldb.(*db).Update(0xc000318000?, 0xc0001d2600)
        /home/calvin/bitcoin-projects/utreexod1/utreexod/database/ffldb/db.go:2278 +0x7e
github.com/utreexo/utreexod/blockchain/indexers.(*Manager).Init(0xc00030a090, 0xbe77a0?, 0xc000318000?)
        /home/calvin/bitcoin-projects/utreexod1/utreexod/blockchain/indexers/manager.go:508 +0xdf7
github.com/utreexo/utreexod/blockchain.New(0xc0002236e0)
        /home/calvin/bitcoin-projects/utreexod1/utreexod/blockchain/chain.go:2525 +0x8c2
main.newServer({0xc00005dd40, 0x1, 0x1}, {0x0, 0x0, 0x0}, {0x0, 0x0, 0x0}, {0xbec1a0, ...}, ...)
        /home/calvin/bitcoin-projects/utreexod1/utreexod/server.go:3474 +0x1945
main.btcdMain(0x0)
        /home/calvin/bitcoin-projects/utreexod1/utreexod/utreexod.go:406 +0xea7
main.main()
        /home/calvin/bitcoin-projects/utreexod1/utreexod/utreexod.go:592 +0x96

The index panics out on start

Let me look into it

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