cgr/parallel_test.cg at main · commandgraph/cgr · GitHub

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var servers = "web-1,web-2,web-3,web-4"
var version = "2.4.1"

node "deploy" {
  via local

  resource build_release {
    description "build release"
    check `test -f /tmp/cg_par_test/release.tar.gz`
    run `mkdir -p /tmp/cg_par_test && echo "built" > /tmp/cg_par_test/release.tar.gz`
  }
  resource configure_everything {
    description "configure everything"
    needs build_release
    run `echo "all configs written"`
    parallel 2 {
      resource write_config_a {
        description "write config a"
        run `echo "config_a" > /tmp/cg_par_test/a.conf`
      }
      resource write_config_b {
        description "write config b"
        run `echo "config_b" > /tmp/cg_par_test/b.conf`
      }
      resource write_config_c {
        description "write config c"
        run `echo "config_c" > /tmp/cg_par_test/c.conf`
      }
    }
  }
  resource fetch_package {
    description "fetch package"
    needs build_release
    race {
      resource try_local_cache {
        description "try local cache"
        run `test -f /tmp/cg_par_test/release.tar.gz && echo "cache hit"`
      }
      resource try_remote_mirror {
        description "try remote mirror"
        run `echo "downloaded from mirror"`
      }
    }
  }
  resource distribute_to_fleet {
    description "distribute to fleet"
    needs build_release
    each server in "${servers}", 2 {
      resource upload_to_server {
        description "upload to ${server}"
        run `echo "uploading to ${server}" > /tmp/cg_par_test/${server}.uploaded`
      }
    }
  }
  resource rolling_deploy {
    description "rolling deploy"
    needs distribute_to_fleet, configure_everything, fetch_package
    stage "rollout" {
      phase "canary" 1 from "${servers}" {
        resource deploy_to_server {
          description "deploy to ${server}"
          run `echo "deployed ${version} to ${server}" > /tmp/cg_par_test/${server}.deployed`
        }
        verify "canary healthy" {
          run `test -f /tmp/cg_par_test/web-1.deployed`
          timeout 30
          on_fail warn
        }
      }
      phase "remaining" rest from "${servers}" {
        each server, 2 {
          resource deploy_to_server {
            description "deploy to ${server}"
            run `echo "deployed ${version} to ${server}" > /tmp/cg_par_test/${server}.deployed`
          }
        }
      }
    }
  }
  verify "all servers deployed" {
    needs rolling_deploy
    run `ls /tmp/cg_par_test/*.deployed | wc -l | grep -q 4`
    timeout 30
    on_fail warn
  }
}