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feat(wallet): new command to publish a contract definition transaction #4133

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merged 38 commits into from
May 26, 2022

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mrnaveira
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@mrnaveira mrnaveira commented May 24, 2022

Description

  • Created a new transaction output features for the Contract Definition
    • For simplicity, I decided to leave out fields that could be more coupled to the template format.
    • The contract_id is calculated as a hash of the contents of the contract definition, in the line of what is described in the RFCs. I used ConsensusHashWriter to make it totally consistent.
    • I created a new Output Features version to signal the consensus breaking changes.
    • Had to update the genesis block struct to include the new features
    • Had to update the gRPC types to include the new features
  • Created a new command in the tari console wallet (publish-contract-definition):
    1. Reads the contract definition from a JSON file. I defined auxiliary structs (base_layer/wallet/src/assets/contract_definition.rs) to decouple the file format from the output features.
    2. Created a new transaction with the CONTRACT_DEFNITION flag and the new Contract Definition output features.
    3. Publishes the corresponding UTXO into the network.
  • Right now the base layer does not perform any check in the values in the contract definition. In the future we want to implement custom consensus rules for contract definition (like avoiding duplicates, spending requirements, etc.) but I purposely left that out of this PR for simplicity.

Motivation and Context

As a user, I want to be able to publish a new contract definition into the network through the console wallet.

How Has This Been Tested?

  • Created a new unit test for the consensus encoding of the new Contract Definition output features
  • Created a new integration test for the wallet CLI that reads the contract definition from a JSON file and successfully publishes the transaction

sdbondi
sdbondi previously approved these changes May 25, 2022
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Looks good - approved with few minor comments

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This looks good.
I just have an issue with the derive(Hash)
And a question about the one type

// Fixed lenght of all string fields in the contract definition
const STR_LEN: usize = 32;

#[derive(Debug, Clone, PartialEq, Deserialize, Serialize, Eq, Hash)]
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Suggested change
#[derive(Debug, Clone, PartialEq, Deserialize, Serialize, Eq, Hash)]
#[derive(Debug, Clone, PartialEq, Deserialize, Serialize, Eq)]

This is not the same Hash trait we use, this is the rust one std::hash

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I did it because output_features.rs (which is the "parent" struct) derives the standard that Hash trait, so it makes it required to do it here as well

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mmm, wonder why it has it...
It looks like it could be removed, but I think that's for another PR

}
}

#[derive(Debug, Clone, PartialEq, Deserialize, Serialize, Eq, Hash)]
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Suggested change
#[derive(Debug, Clone, PartialEq, Deserialize, Serialize, Eq, Hash)]
#[derive(Debug, Clone, PartialEq, Deserialize, Serialize, Eq)]

}
}

#[derive(Debug, Clone, PartialEq, Deserialize, Serialize, Eq, Hash)]
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Suggested change
#[derive(Debug, Clone, PartialEq, Deserialize, Serialize, Eq, Hash)]
#[derive(Debug, Clone, PartialEq, Deserialize, Serialize, Eq)]

}
}

#[derive(Debug, Clone, PartialEq, Deserialize, Serialize, Eq, Hash)]
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Suggested change
#[derive(Debug, Clone, PartialEq, Deserialize, Serialize, Eq, Hash)]
#[derive(Debug, Clone, PartialEq, Deserialize, Serialize, Eq)]

base_layer/wallet/src/assets/contract_definition.rs Outdated Show resolved Hide resolved
mrnaveira and others added 2 commits May 25, 2022 08:15
…ct_definition_features.rs

Co-authored-by: Stan Bondi <sdbondi@users.noreply.github.com>
sdbondi
sdbondi previously approved these changes May 25, 2022
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+1

@mrnaveira mrnaveira marked this pull request as draft May 25, 2022 11:00
@sdbondi sdbondi removed the mq-failed label May 25, 2022
@mrnaveira mrnaveira marked this pull request as ready for review May 25, 2022 11:59
stringhandler
stringhandler previously approved these changes May 26, 2022
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Nice. I want to note that the public functions may not look like that in the final form, but this is fine for a start

@mrnaveira mrnaveira requested a review from stringhandler May 26, 2022 14:42
@aviator-app aviator-app bot removed the mq-failed label May 26, 2022
@aviator-app aviator-app bot merged commit b4991a4 into tari-project:development May 26, 2022
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5 participants