Ardor v2.2.0e

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     TheWireMaster 
    Keymaster

    Source: https://ardorforum.org/ardor-software-releases/ardor-v2-2-0e/

    ———————-

    Release 2.2.0e

    https://www.jelurida.com/

    sha256 checksums:

    6f29f16499366284d6351eff2cb3613b72e306c3bde9eb26df20bfcf4dec6fdd ardor-client-2.2.0e.zip

    f63b69c8482c480ff56e774ab2a95ff4f8a5465e2ca6eeea27aace3006a9d372 ardor-client-2.2.0e.sh

    The exe and dmg packages must have a digital signature by “Jelurida Swiss SA”.

    Change log:

    This is an experimental release, and a MANDATORY upgrade for all testnet nodes.
    It can also be used on mainnet.

    Added Asset Properties feature, to be activated at block 455000 on testnet only.

    Asset Properties allow attaching metadata to assets, in the form of name/value
    pairs. The property name can be up to 32 characters, and property value up to
    160 characters in length. Anyone can set a property on an asset. Only the asset
    issuer, or the setter of the property, can delete a property. The setter of a
    property can edit it by setting a new property with the same name.

    New APIs: SetAssetProperty, DeleteAssetProperty, GetAssetProperties.

    Implemented freezing of assets and currencies, to be used for tokens that are
    scheduled to become child chains, or need to be deactivated for other reasons.

    Freezing of arbitrary assets or currencies is not (and will not be) supported.
    The freezing of a particular holding must first be enabled in a new release,
    and is then triggered at a predefined height, optionally specified as asset
    property for assets, or account property for currencies.

    After the freeze height, no further transactions with the frozen holding are
    possible (with the exception of setting or deleting asset properties). Freezing
    is not reversible.

    Implemented migration of a frozen asset or currency to a new child chain. The
    migration of a particular holding must first be enabled in a new release, and
    is then triggered at a predefined height, optionally specified as asset property
    for assets, or account property for currencies.

    Implemented loading of account balances for new child chains. The Dominium child
    chain will be launched on testnet at or after block 455000, with testnet
    balances allocated to developer accounts only.

    Fixed loading transaction voucher which contains attached encrypted message.

    Node log file name changed from nxt.log to ardor.{n}.log where {n} is the log
    file number. The current log file is always named ardor.0.log. Up to 10 log
    files are kept.

    The windows startup script run.bat no longer relies on the windows registry
    when looking up the Java version.

    Lightweight Contracts:

    The contract runner now executes contracts in their own sandbox which restricts
    the contract permissions based on a standard Java policy file named ardor.policy
    By default contracts allowed to connect to any address, and read, write and
    delete files in the temp folder of the contract runner workstation. Direct
    access to the local workstation, or the local blockchain not through the APIs
    is blocked by default. The contract runner operator can grant additional
    permissions per contract or for all contracts submitted by a specific account.
    See examples in ardor.policy file.

    Added support for deployment and verification of single source file contract
    which compiles into multiple class files. The contract classes are automatically
    packaged into a Jar file when deployed to the blockchain. Similarly verification
    of the contract unpacks the Jar and compares individual class files.

    Parameter injection is now supported using the ContractInvocationParameter,
    ContractSetupParameter and ContractRunnerParameter annotations. This reduces
    contract boiler plate code for reading parameters.

    Contract class selector was added to the contract manager plugin. Users
    upgrading from a previous release will need to redeploy the IntelliJ plugin
    after installing this version. The plugin version should be 2.2.0.

    Contract runner parameters can be specified in the nxt.properties file using
    the addon.contractRunner. prefix. The contracts.json configuration file is now
    only used when specifying secret contract runner parameters so can be ignored
    in most configuration.

    It is no longer required to define contracts which do not setup parameters in
    the contract.uploader.json file.

    See: https://ardordocs.jelurida.com/Lightweight_Contracts for more details and
    examples.

    Due to interface changes introduced by this release, all existing contracts will
    have to be redeployed on testnet and contract runners using a previous version
    won’t be able to run contracts deployed using the current version.

    On testnet only, after block 455000 the average block time will be reduced to
    10 seconds. This is to allow faster testing and development, and to test the
    feasibility of reducing block time should the need arise on mainnet.

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