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@3-s-it/healthcheck

v1.3.3

Published

get health status from various sources like dbs, filesystems or upstream services

Downloads

104

Readme

healthcheck

Description

This npm module contains various healthchecks in order to retrieve the status from different sources like dbs, filesystems or upstream services.

elasticsearch

  • read+write check by incrementing a counter within a document, if index or document does not exist yet it is created on first run

mongodb

  • read+write check by creating a new document with a random testvalue in a capped collection of max 1 document on each run

postgres

  • read+write check by incrementing a counter stored within a sequence, if sequence does not exist yet it is created on first run

redis

  • read+write check by incrementing a counter associated with a specific key, if key does not exist yet it is created on first run

success

  • dummy check for testing purposes which does not perform any tests and always returns true

upstream

  • performs a GET request to /alive endpoint and resolves check successfully if a http status code of 200 OK is returned

filesystem

  • read+write check by creating and removing a file in a temporary directory

Development

Before starting development

  • Install npm packages: make npm or npm install
  • Build service dependencies (docker images): make build-dev-images
  • Start service dependencies (docker container): make dev-inf-up
  • Watch for file changes: npm run watch
    • alternatively press ⇧⌘B to execute default task runner in vscode

During development

  • Run test suite: npm run test
  • Commit your changes into a separare feature branch using semantic commit messages
  • Regulary push your changes to remote origin

After finishing development

  • Stop service dependencies: make dev-inf-down
  • Push your changes to remote origin
  • Create a pull request from feature branch to branch Development via the Webinterface of git server
    • Add a reviwer to the pull request
  • Check CI/CD Pipeline result

Publishing

  • Sign in to registry with npm adduser --registry=<registry> --always-auth
  • Update version number in package.json file
  • Make sure to update .npmignore file
  • Run npm publish --registry=<registry> to push latest version to private registry
  • Signin to the registry and verify result