@hyperledger/fabric-gateway
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    Interface Proposal

    Proposal represents a transaction proposal that can be sent to peers for endorsement or evaluated as a query.

    interface Proposal {
        endorse(options?: CallOptions): Promise<Transaction>;
        evaluate(options?: CallOptions): Promise<Uint8Array<ArrayBufferLike>>;
        getBytes(): Uint8Array;
        getDigest(): Uint8Array;
        getTransactionId(): string;
    }

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    Methods

    endorse evaluate getBytes getDigest getTransactionId

    Methods

    • Obtain endorsement for the transaction proposal from sufficient peers to allow it to be committed to the ledger.

      Parameters

      Returns Promise<Transaction>

      An endorsed transaction that can be submitted to the ledger.

      EndorseError Thrown if the gRPC service invocation fails.

    • Evaluate the transaction proposal and obtain its result, without updating the ledger. This runs the transaction on a peer to obtain a transaction result, but does not submit the endorsed transaction to the orderer to be committed to the ledger.

      Parameters

      Returns Promise<Uint8Array<ArrayBufferLike>>

      The result returned by the transaction function.

      GatewayError Thrown if the gRPC service invocation fails.

    • Get the serialized bytes of the signable object. Serialized bytes can be used to recreate the object using methods on Gateway.

      Returns Uint8Array

    • Get the digest of the signable object. This is used to generate a digital signature.

      Returns Uint8Array

    • Get the transaction ID for this proposal.

      Returns string

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