Status Monitor

practicalli/webapp-status-monitor is a Leiningen project create in October 2018.

The project uses ring and compojure as the basis of a web application.

Configured with a project.clj file.

(defproject status-monitor "0.1.0-SNAPSHOT"
  :description "A server side website dashboard to collate monitoring information"
  :url "https://github.com/jr0cket/status-monitor"
  :min-lein-version "2.0.0"
  :dependencies [[org.clojure/clojure "1.9.0"]
                 [compojure "1.6.1"]
                 [ring/ring-defaults "0.3.2"]
                 [hiccup "1.0.5"]]
  :plugins [[lein-ring "0.12.4"]
            [lein-eftest "0.5.3"]]
  :ring {:handler status-monitor.handler/app}
  :profiles
  {:dev {:dependencies [[javax.servlet/servlet-api "2.5"]
                        [ring/ring-mock "0.3.2"]]}})

CircleCI Configuration

This configuration uses a docker image with Leiningen version 2.8.1

The configuration defines that the code will be check out, Leiningen will download the dependencies and then run unit tests.

# Clojure CircleCI 2.0 configuration file
#
# Check https://circleci.com/docs/2.0/language-clojure/ for more details
#
version: 2
jobs:
  build:
    docker:
      # specify the version you desire here
      - image: circleci/clojure:lein-2.8.1

      # Specify service dependencies here if necessary
      # CircleCI maintains a library of pre-built images
      # documented at https://circleci.com/docs/2.0/circleci-images/
      # - image: circleci/postgres:9.4

    working_directory: ~/repo

    environment:
      LEIN_ROOT: "true"
      # Customize the JVM maximum heap limit
      JVM_OPTS: -Xmx3200m

    steps:
      - checkout

      # Download and cache dependencies
      - restore_cache:
          keys:
          - v1-dependencies-{{ checksum "project.clj" }}
          # fallback to using the latest cache if no exact match is found
          - v1-dependencies-

      - run: lein deps

      - save_cache:
          paths:
            - ~/.m2
          key: v1-dependencies-{{ checksum "project.clj" }}

      # run tests!
      - run: lein test

Caching dependencies

CircleCI create a cache of downloaded dependencies, to help speed up the running of the project.

The config.yml defines the path where the dependencies are saved. A unique key is used to identify the dependencies cache.