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* Implement replacement for post-commit validation PostCommitValidation is meant as a replacement for ActiveLedgerState and ActiveLedgerStateManager for JdbcLedgerDao so that the old table can eventually be retired and post-commit validation can happen on the new participant schema. This commit simply introduces the implementation and tests it in isolation. Integration with the existing system will come in a separate contribution. changelog_begin changelog_end * Address https://github.com/digital-asset/daml/pull/5737#discussion_r415918949 * Address https://github.com/digital-asset/daml/pull/5737#discussion_r415921207 * Add tests for the empty ledger scenario and introduce necessary fixes * Add more tests for fetch and using some prior history * Add tests for divulged contracts |
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Overview
This document is to help internal engineers work with the Sandbox and the new ledger API. Note: If you encounter bugs. Please report issues you find in the #team-ledger-api channel.
DAML Sandbox
To build a fat JAR with the sandbox built from HEAD run
bazel build //ledger/sandbox:sandbox-binary
Sandbox application can be run from command line with the following command:
java -jar bazel-bin/ledger/sandbox/sandbox-binary_deploy.jar [options] <archive>
as run from the main project root directory (adjust the location of the JAR according to your working directory).
Command line arguments
-p, --port <value> Sandbox service port. Defaults to 6865.
-a, --address <value> Sandbox service host. Defaults to binding on all addresses.
--dalf Parse provided archives as DAML-LF Archives instead of DARs.
--static-time Use static time, configured with TimeService through gRPC.
-w, --wall-clock-time Use wall clock time (UTC). When not provided, static time is used.
-o, --sim-time-offset <value>
Use simulated time with the given duration (ISO-8601 with optional `-` prefix) as offset relative to UTC. For example, supplying `-PT6M` will result in the server time lagging behind UTC by 6 minutes. When not provided, static time is used.
--no-parity Disables Ledger Server parity mode. Features which are not supported by the Platform become available.
--scenario <value> If set, the sandbox will execute the given scenario on startup and store all the contracts created by it.
--daml-lf-archive-recursion-limit <value>
Set the recursion limit when decoding DAML-LF archives (.dalf files). Default is 1000
<archive>... Daml archives to load. Only DAML-LF v1 Archives are currently supported.
--pem <value> TLS: The pem file to be used as the private key
--crt <value> TLS: The crt file to be used as the cert chain. Required if any other TLS parameters are set.
--cacrt <value> TLS: The crt file to be used as the the trusted root CA.
--help Print the usage text
Compatibility
Sandbox uses models compiled in to the DAR format.
Note that the new Ledger API only supports DAML 1.0 or above codebases compiled to DAML-LF v1. Again, using the DAML packaging as suggested above will ensure that you are generating dar files that the Sandbox can consume.
Ledger API
The new Ledger API uses gRPC. If you just want to create / exercise contracts, I suggest you start by looking at command_service.proto, which exposes a synchronous API to the DAML ledger.
Logging
You can enable debug logging in Sandbox with sandbox-log-level system property:
$ java -jar ./bazel-bin/ledger/sandbox/sandbox-binary_deploy.jar --log-level=DEBUG $PWD/bazel-bin/ledger/sandbox/Test.dar
Or when started from Bazel with:
$ bazel run //ledger/sandbox:sandbox-binary -- --log-level=DEBUG $PWD/bazel-bin/ledger/sandbox/Test.dar