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daml/ledger/ledger-on-memory
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Victor Peter Rouven Müller beb2d138f2
Add cli option & system property to enable json only logging for http json service (#9725) 
changelog_begin
- [Ledger HTTP Json Service] Logging output can now be in JSON either via providing the cli option `--log-encoder json` or via setting the env var `LOG_FORMAT_JSON=true`
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2021-05-20 13:28:34 +00:00
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src Add cli option & system property to enable json only logging for http json service (#9725) 2021-05-20 13:28:34 +00:00
BUILD.bazel publish ledger-on-memory to maven (#9548) 2021-05-03 15:17:27 +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.