swsnr

// Copyright Sebastian Wiesner <sebastian@swsnr.de>
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

//! Logging.

use env_logger::filter::Filter;
use log::{Log, Metadata, Record};

swsnr

The popular CI server Jenkins provides a rich API to access information about builds.
This API speaks JSON but the JSON it returns has a rather strange shape. I needed to extract the Git revision built by a job, but Jenkins hides this information in a specific object in a “catch-all” actions array which contains JSON objects of different shapes, many of which may or may not be present. With Circe and some Shapeless magic I managed to decode this irregular JSON in a type-safe and fail-safe way (ignoring unknown JSON objects).

The JSON

This actions in the JSON model of a build looks as follows. I converted the JSON to YAML to remove the syntactic boilerplate of JSON and make the snippet easier to read, and I also removed irrelevant parts:

swsnr

import io.circe._
import io.circe.generic.semiauto._

sealed trait Response

final case class Success(`type`: String, id: Int, version: Int)
  extends Response

object Success {
  implicit val successDecoder: Decoder[Success] = deriveDecoder[Success]

swsnr

import akka.NotUsed
import akka.http.scaladsl.model.ws
import akka.http.scaladsl.model.ws.{BinaryMessage, Message, TextMessage}
import akka.stream.scaladsl.{Broadcast, Flow, GraphDSL}
import akka.stream.{FanOutShape, Graph, Outlet}

import scala.collection.immutable

/**

swsnr

#!/usr/bin/groovy

/**
 * Run SBT via sh with the given arguments.
 *
 * Injects a file pointed to by $NEXUS_CREDENTIALS env var for publishing credentials.
 * Use the Credentials Jenkins plugin to manage these credentials in Jenkins and inject
 * them into a build.
 *
 * @param sbtArgs Arguments for SBT

swsnr

#!/bin/bash

set -e

# The keyring we use to verify the signature of our download
keyring_file="$1"
# The version of yarn to install
version="$2"
# The directory install yarn versions to
basedir="$HOME/.yarn/versions/"

swsnr

#!/usr/bin/groovy

/**
 * Extract project versions from all SBT POMs and publish them as summary badge.
 *
 * Requires Badge and Pipeline Utility Step plugins.
 */

def call() {
    // Clear out old badge if any

swsnr

import akka.http.scaladsl.model.StatusCodes.MovedPermanently
import akka.http.scaladsl.model.Uri
import akka.http.scaladsl.server.Directives._
import akka.http.scaladsl.server._
import org.webjars.WebJarAssetLocator

import scala.concurrent.duration._
import scala.util.{Failure, Success, Try}

object Directives {

swsnr

import shapeless._
import shapeless.poly._
import shapeless.record._
import shapeless.ops.record._
import shapeless.ops.hlist.{Mapper,ToTraversable}
import shapeless.tag._

final case class Message(id: Int, title: String, body: String)

trait ToAttributes[T] {

swsnr

import os
from contextlib import contextmanager

@contextmanager
def suppress_output(fd):
    """
    Suppress output to the given ``fd``::

       with suppress_fd(sys.stderr):
           # in this block any output to standard error is suppressed