From 6f6c649ec606d6ec5bd5874002fda6efb568e9ec Mon Sep 17 00:00:00 2001
From: Pamplemousse <xav.maso@gmail.com>
Date: Wed, 5 May 2021 13:52:52 -0700
Subject: [PATCH 1/3] jenkins: Create the `jenkins-cli` command

Signed-off-by: Pamplemousse <xav.maso@gmail.com>
---
 .../continuous-integration/jenkins/default.nix   | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/tools/continuous-integration/jenkins/default.nix b/pkgs/development/tools/continuous-integration/jenkins/default.nix
index 9807866f1bdf..49e083e26969 100644
--- a/pkgs/development/tools/continuous-integration/jenkins/default.nix
+++ b/pkgs/development/tools/continuous-integration/jenkins/default.nix
@@ -1,5 +1,5 @@
-{ lib, stdenv, fetchurl, common-updater-scripts, coreutils, git, gnused, nix
-, nixfmt, writeScript, nixosTests, jq, cacert, curl }:
+{ lib, stdenv, fetchurl, common-updater-scripts, coreutils, git, gnused, makeWrapper, nix
+, nixfmt, openjdk, writeScript, nixosTests, jq, cacert, curl }:
 
 stdenv.mkDerivation rec {
   pname = "jenkins";
@@ -10,9 +10,19 @@ stdenv.mkDerivation rec {
     sha256 = "0lficvngxzl7q088n3ssnnhjicd0xxr0k3n0inz7pvjj27dl35rr";
   };
 
+  nativeBuildInputs = [ makeWrapper ];
+
   buildCommand = ''
-    mkdir -p "$out/webapps"
+    mkdir -p "$out/bin" "$out/share" "$out/webapps"
+
     cp "$src" "$out/webapps/jenkins.war"
+
+    # Create the `jenkins-cli` command.
+    ${openjdk}/bin/jar -xf "$src" WEB-INF/lib/cli-${version}.jar \
+      && mv WEB-INF/lib/cli-${version}.jar "$out/share/jenkins-cli.jar"
+
+    makeWrapper "${openjdk}/bin/java" "$out/bin/jenkins-cli" \
+      --add-flags "-jar $out/share/jenkins-cli.jar"
   '';
 
   passthru = {

From 4265efef54bd5e2fe6d7dff3241d69ef3e86b161 Mon Sep 17 00:00:00 2001
From: Pamplemousse <xav.maso@gmail.com>
Date: Wed, 5 May 2021 14:21:24 -0700
Subject: [PATCH 2/3] nixos/modules/jenkins: Add option to add CLI

Signed-off-by: Pamplemousse <xav.maso@gmail.com>
---
 .../jenkins/default.nix                       | 31 ++++++++++++++++---
 1 file changed, 26 insertions(+), 5 deletions(-)

diff --git a/nixos/modules/services/continuous-integration/jenkins/default.nix b/nixos/modules/services/continuous-integration/jenkins/default.nix
index cdc3b4b5c58f..889688a26853 100644
--- a/nixos/modules/services/continuous-integration/jenkins/default.nix
+++ b/nixos/modules/services/continuous-integration/jenkins/default.nix
@@ -2,6 +2,7 @@
 with lib;
 let
   cfg = config.services.jenkins;
+  jenkinsUrl = "http://${cfg.listenAddress}:${toString cfg.port}${cfg.prefix}";
 in {
   options = {
     services.jenkins = {
@@ -141,14 +142,34 @@ in {
           Additional command line arguments to pass to the Java run time (as opposed to Jenkins).
         '';
       };
+
+      withCLI = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          Whether to make the CLI available.
+
+          More info about the CLI available at
+          <link xlink:href="https://www.jenkins.io/doc/book/managing/cli">
+          https://www.jenkins.io/doc/book/managing/cli</link> .
+        '';
+      };
     };
   };
 
   config = mkIf cfg.enable {
-    # server references the dejavu fonts
-    environment.systemPackages = [
-      pkgs.dejavu_fonts
-    ];
+    environment = {
+      # server references the dejavu fonts
+      systemPackages = [
+        pkgs.dejavu_fonts
+      ] ++ optional cfg.withCLI cfg.package;
+
+      variables = {}
+        // optionalAttrs cfg.withCLI {
+          # Make it more convenient to use the `jenkins-cli`.
+          JENKINS_URL = jenkinsUrl;
+        };
+    };
 
     users.groups = optionalAttrs (cfg.group == "jenkins") {
       jenkins.gid = config.ids.gids.jenkins;
@@ -215,7 +236,7 @@ in {
       '';
 
       postStart = ''
-        until [[ $(${pkgs.curl.bin}/bin/curl -L -s --head -w '\n%{http_code}' http://${cfg.listenAddress}:${toString cfg.port}${cfg.prefix} | tail -n1) =~ ^(200|403)$ ]]; do
+        until [[ $(${pkgs.curl.bin}/bin/curl -L -s --head -w '\n%{http_code}' ${jenkinsUrl} | tail -n1) =~ ^(200|403)$ ]]; do
           sleep 1
         done
       '';

From 4f093b8fdb3e6b7102ad99089712beca2ae49abb Mon Sep 17 00:00:00 2001
From: Pamplemousse <xav.maso@gmail.com>
Date: Sun, 4 Jul 2021 14:49:39 -0700
Subject: [PATCH 3/3] nixos/modules/jenkins: Test the CLI

Signed-off-by: Pamplemousse <xav.maso@gmail.com>
---
 nixos/tests/jenkins-cli.nix | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 nixos/tests/jenkins-cli.nix

diff --git a/nixos/tests/jenkins-cli.nix b/nixos/tests/jenkins-cli.nix
new file mode 100644
index 000000000000..f25e1604da33
--- /dev/null
+++ b/nixos/tests/jenkins-cli.nix
@@ -0,0 +1,30 @@
+import ./make-test-python.nix ({ pkgs, ...} : rec {
+  name = "jenkins-cli";
+  meta = with pkgs.lib.maintainers; {
+    maintainers = [ pamplemousse ];
+  };
+
+  nodes = {
+    machine =
+      { ... }:
+      {
+        services.jenkins = {
+          enable = true;
+          withCLI = true;
+        };
+      };
+  };
+
+  testScript = ''
+    start_all()
+
+    machine.wait_for_unit("jenkins")
+
+    assert "JENKINS_URL" in machine.succeed("env")
+    assert "http://0.0.0.0:8080" in machine.succeed("echo $JENKINS_URL")
+
+    machine.succeed(
+        "jenkins-cli -auth admin:$(cat /var/lib/jenkins/secrets/initialAdminPassword)"
+    )
+  '';
+})