exhibitor: convert to mavenfod

{ fetchFromGitHub, maven, jdk, makeWrapper, lib, stdenv, ... }:

stdenv.mkDerivation rec {

{ lib, javaPackages, fetchFromGitHub, maven, makeWrapper, jdk }:

javaPackages.mavenfod rec {

  pname = "exhibitor";

  version = "1.5.6";

  src = fetchFromGitHub {

    owner = "soabase";

    repo = "exhibitor";

    sha256 = "07vikhkldxy51jbpy3jgva6wz75jksch6bjd6dqkagfgqd6baw45";

    rev = "5fcdb411d06e8638c2380f7acb72a8a6909739cd";

  };

  mavenDependenciesSha256 = "sha256-oGd8PFF1Z9BElNsgqbC/llQm8j/T+T01VwvSw3tTU0E=";

  # This is adapted from https://github.com/volth/nixpkgs/blob/6aa470dfd57cae46758b62010a93c5ff115215d7/pkgs/applications/networking/cluster/hadoop/default.nix#L20-L32

  fetchedMavenDeps = stdenv.mkDerivation {

    name = "exhibitor-${version}-maven-deps";

    inherit src nativeBuildInputs;

    buildPhase = ''

      cd ${pomFileDir};

      while timeout --kill-after=21m 20m mvn package -Dmaven.repo.local=$out/.m2; [ $? = 124 ]; do

        echo "maven hangs while downloading :("

      done

    '';

    installPhase = ''find $out/.m2 -type f \! -regex '.+\(pom\|jar\|xml\|sha1\)' -delete''; # delete files with lastModified timestamps inside

    outputHashAlgo = "sha256";

    outputHashMode = "recursive";

    outputHash = mavenDependenciesSha256;

    rev = "v${version}";

    hash = "sha256-PZRT2C4CfYCbaHE9tEnwpyzEsJ6ZaS//zUDweR4YKrI=";

  };

  # The purpose of this is to fetch the jar file out of public Maven and use Maven

  # to build a monolithic, standalone jar, rather than build everything from source

  # (given the state of Maven support in Nix). We're not actually building any java

  # source here.

  pomFileDir = "exhibitor-standalone/src/main/resources/buildscripts/standalone/maven";

  sourceRoot = "source/exhibitor-standalone/src/main/resources/buildscripts/standalone/maven";

  mvnFetchExtraArgs = {

    inherit sourceRoot;

  };

  mvnHash = "sha256-xhLnjtaF5eFUuBo5aHdp0j2sPfxYhFEZYJwVQlkqARs=";

  nativeBuildInputs = [ maven makeWrapper ];

  buildPhase = ''

      cd ${pomFileDir}

      mvn package --offline -Dmaven.repo.local=$(cp -dpR ${fetchedMavenDeps}/.m2 ./ && chmod +w -R .m2 && pwd)/.m2

  installPhase = ''

    mkdir -p $out/bin

    mkdir -p $out/share/java

    filename=$(basename target/*.jar)

    mv target/$filename $out/share/java/

    makeWrapper ${jdk}/bin/java $out/bin/startExhibitor.sh --add-flags "-jar $out/share/java/$filename" --suffix PATH : ${lib.makeBinPath [ jdk ]}

  '';

  meta = with lib; {

    description = "ZooKeeper co-process for instance monitoring, backup/recovery, cleanup and visualization";

    homepage = "https://github.com/soabase/exhibitor";

    mainProgram = "startExhibitor.sh";

    platforms = platforms.unix;

  };

  installPhase = ''

    mkdir -p $out/bin

    mkdir -p $out/share/java

    mv target/$name.jar $out/share/java/

    makeWrapper ${jdk}/bin/java $out/bin/startExhibitor.sh --add-flags "-jar $out/share/java/$name.jar" --suffix PATH : ${lib.makeBinPath [ jdk ]}

  '';

}