@avanio/variable-util-tachyon

Tachyon storage driver loader for @avanio/variable-util

Installation

To install the necessary dependencies, run:

npm install @avanio/variable-util-tachyon @avanio/variable-util @avanio/logger-like tachyon-drive

Example

import { MemoryStorageDriver } from "tachyon-drive";
import {
  TachyonConfigLoader,
  tachyonConfigJsonStringSerializer,
} from "./tachyonConfigLoader";
import { env, getConfigVariable, stringParser } from "@avanio/variable-util";

// As example create a memory storage driver with a JSON string serializer
const driver = new MemoryStorageDriver(
  "MemoryStorageDriver",
  tachyonConfigJsonStringSerializer,
  null,
);
// Create a TachyonConfigLoader instance
const tachyonConfigLoader = new TachyonConfigLoader(driver);
tachyonConfigLoader.set("SOME_ENV", "override value"); //  Set a configuration variable

// Get the loader function
const tachyonEnv = tachyonConfigLoader.getLoader;

// Using the tachyon loader to get a configuration variable (or using ConfigMap)
const value = await getConfigVariable(
  "SOME_ENV",
  [tachyonEnv(), env()],
  stringParser(),
);
console.log(value); // 'override value'

Serialization

TachyonConfigLoader have two serializer objects, one for JSON string and one for JSON string Buffer.

• tachyonConfigJsonStringSerializer - Serializes the configuration data to a JSON string.
• tachyonConfigJsonBufferSerializer - Serializes the configuration data to a JSON string as Buffer.
• tachyonConfigJsonArrayBufferSerializer - Serializes the configuration data to a JSON string as ArrayBuffer.