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History

Robert Autenrieth 66adbc0366 DPP-463 switch conformance tests to append only (#11101 ) * Use append-only schema in tests changelog_begin changelog_end * Fix Oracle build * Update ledger/ledger-on-memory/BUILD.bazel Co-authored-by: tudor-da <tudor.voicu@digitalasset.com> * Run more conformance tests on append-only * Run pruning tests in split-participant mode * Disable multi-participant test in split participant * Add missing ContractIdIT test Co-authored-by: tudor-da <tudor.voicu@digitalasset.com>		2021-10-11 23:31:30 +02:00
..
src	Extract state.proto from daml_kvutils.proto [KVL-1090] (#11174 )	2021-10-11 08:56:16 +00:00
BUILD.bazel	DPP-463 switch conformance tests to append only (#11101 )	2021-10-11 23:31:30 +02:00
README.md	Delete the Docker image targets. (#7932 )	2020-11-11 07:40:06 +00:00

README.md

Overview

This document is to help internal engineers work with ledger-on-memory.

ledger-on-memory is a key/value-based ledger that uses a simple in-memory map as an underlying storage. It uses either H2 or PostgreSQL as its index database.

Ledger On Memory

To build a fat JAR with the server built from HEAD run

bazel build //ledger/ledger-on-memory:app_deploy.jar

The application can be run from command line with the following command:

java -Xmx4G -XX:+UseG1GC -jar bazel-bin/ledger/ledger-on-memory/app_deploy.jar --participant participant-id=foo,port=6861

As run from the main project root directory (adjust the location of the JAR according to your working directory).

Alternatively, the application can be run using the Bazel command:

bazel run //ledger/ledger-on-memory:app -- --participant participant-id=foo,port=6861

Creating ledger exports

Ledger On Memory can be used to generate ledger exports through an environment variable:

export KVUTILS_LEDGER_EXPORT=/path/to/export/file

Then launch the ledger using the Bazel or Java command as described above.