Status Monitor Circle CI Continuous Integration

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 the CircleCI specific docker image with Java 17 and the latest version of Leiningen.

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

version: 2
jobs:
  build:
    docker:
      - image: cimg/clojure:1.10

    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.

CircleCI dashboard status monitor project build configuration restoring cache

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