feat: automatically detect if genesis CAR is compressed

[masih]

Related Issues

Proposed Changes

When --genesis path is set, automatically detect if the genesis file is ZSTD compressed and decompress it.

Additional Info

Checklist

Before you mark the PR ready for review, please make sure that:

• Commits have a clear commit message.
• PR title conforms with contribution conventions
• Update CHANGELOG.md or signal that this change does not need it per contribution conventions
• New features have usage guidelines and / or documentation updates in
  • Lotus Documentation
  • Discussion Tutorials
• Tests exist for new functionality or change in behavior
• CI is green

[github-actions]

Please update the PR title to match https://github.com/filecoin-project/lotus/blob/master/CONTRIBUTING.md#pr-title-conventions

PR title now matches the required format.

[rjan90]

Did a test with this branch, and can confirm it works:

Before:

lotus daemon --genesis=/home/boost/lotus/build/genesis/mainnet.car.zst
2025-02-10T12:43:16.762+0100	INFO	main	lotus/daemon.go:230	lotus repo: /mnt/lotuschain/.lotus
2025-02-10T12:43:16.763+0100	INFO	paramfetch	[email protected]/paramfetch.go:209	Parameter file /var/tmp/filecoin-proof-parameters/v28-empty-sector-update-merkletree-poseidon_hasher-8-0-0-92180959e1918d26350b8e6cfe217bbdd0a2d8de51ebec269078b364b715ad63.vk is ok
2025-02-10T12:43:16.763+0100	INFO	paramfetch	[email protected]/paramfetch.go:209	Parameter file /var/tmp/filecoin-proof-parameters/v28-empty-sector-update-merkletree-poseidon_hasher-8-8-0-3b7f44a9362e3985369454947bc94022e118211e49fd672d52bec1cbfd599d18.vk is ok
--------
ERROR: initializing node: starting node: could not build arguments for function "github.com/filecoin-project/lotus/node".ConfigFullNode.StartListening.func10 (/home/boost/lotus/node/modules/lp2p/addrs.go:85): failed to build host.Host: could not build arguments for function "reflect".makeFuncStub (/usr/local/go/src/reflect/asm_amd64.s:28): failed to build lp2p.BaseIpfsRouting: could not build arguments for function "reflect".makeFuncStub (/usr/local/go/src/reflect/asm_amd64.s:28): failed to build dtypes.NetworkName: could not build arguments for function "reflect".makeFuncStub (/usr/local/go/src/reflect/asm_amd64.s:28): failed to build dtypes.AfterGenesisSet: received non-nil error from function "reflect".makeFuncStub (/usr/local/go/src/reflect/asm_amd64.s:28): getting expected genesis failed: loading genesis car file failed: invalid header: malformed stream: invalid appearance of int token; expected map key

After:

lotus daemon --genesis=/home/boost/lotus/build/genesis/mainnet.car.zst
2025-02-10T12:40:04.580+0100	INFO	lotus	lotus/daemon.go:230	lotus repo: /mnt/lotuschain/.lotus
2025-02-10T12:40:04.588+0100	INFO	paramfetch	[email protected]/paramfetch.go:209	Parameter file /var/tmp/filecoin-proof-parameters/v28-proof-of-spacetime-fallback-merkletree-poseidon_hasher-8-0-0-0170db1f394b35d995252228ee359194b13199d259380541dc529fb0099096b0.vk is ok
2025-02-10T12:40:04.588+0100	INFO	paramfetch	[email protected]/paramfetch.go:209	Parameter file /var/tmp/filecoin-proof-parameters/v28-proof-of-spacetime-fallback-merkletree-poseidon_hasher-8-0-0-0cfb4f178bbb71cf2ecfcd42accce558b27199ab4fb59cb78f2483fe21ef36d9.vk is ok
--------
25-02-10T12:40:18.013+0100	INFO	chain	chain/sync.go:646	block validation	{"took": 1.622022872, "height": "4696040", "age": 18.013856694}
2025-02-10T12:40:18.016+0100	INFO	chain	chain/sync.go:646	block validation	{"took": 1.623518005, "height": "4696040", "age": 18.016124076}
2025-02-10T12:40:18.016+0100	INFO	chain	chain/sync.go:646	block validation	{"took": 1.624685525, "height": "4696040", "age": 18.01613177}
2025-02-10T12:40:18.016+0100	INFO	chain	chain/sync.go:646	block validation	{"took": 1.624374797, "height": "4696040", "age": 18.01615072}
2025-02-10T12:40:18.018+0100	INFO	chain	chain/sync.go:646	block validation	{"took": 1.626626394, "height": "4696040", "age": 18.018491273}
2025-02-10T12:40:18.022+0100	INFO	chain	chain/sync.go:646	block validation	{"took": 1.631333797, "height": "4696040", "age": 18.022833674}

[rvagg]

👌 love it, we need more of this simple QoL sanity checking