From 24f2b60fe48bf29c5f1263a116c01cdbd17de118 Mon Sep 17 00:00:00 2001
From: lemoer <git@irrelefant.net>
Date: Mon, 17 Jun 2019 21:52:10 +0200
Subject: [PATCH] Add jenkins-community-slave

---
 contrib/ci/jenkins-community-slave/Dockerfile |  27 +++++
 contrib/ci/jenkins-community-slave/slave.py   | 103 ++++++++++++++++++
 2 files changed, 130 insertions(+)
 create mode 100644 contrib/ci/jenkins-community-slave/Dockerfile
 create mode 100644 contrib/ci/jenkins-community-slave/slave.py

diff --git a/contrib/ci/jenkins-community-slave/Dockerfile b/contrib/ci/jenkins-community-slave/Dockerfile
new file mode 100644
index 00000000..9c53e01d
--- /dev/null
+++ b/contrib/ci/jenkins-community-slave/Dockerfile
@@ -0,0 +1,27 @@
+FROM gluon
+
+USER root
+
+# this is needed to install default-jre-headless in debian slim images
+RUN mkdir -p /usr/share/man/man1
+ 
+RUN apt-get update && apt-get install -y default-jre-headless curl python python-pip git
+RUN pip install jenkins-webapi
+ 
+# Get docker-compose in the agent container
+RUN mkdir -p /home/jenkins
+RUN mkdir -p /var/lib/jenkins
+ 
+# Start-up script to attach the slave to the master
+ADD slave.py /var/lib/jenkins/slave.py
+ 
+WORKDIR /home/jenkins
+
+ENV JENKINS_URL "https://build.ffh.zone/"
+ENV JENKINS_SLAVE_ADDRESS ""
+ENV SLAVE_EXECUTORS "1"
+ENV SLAVE_LABELS "docker"
+ENV SLAVE_WORING_DIR ""
+ENV CLEAN_WORKING_DIR "true"
+ 
+CMD [ "python", "-u", "/var/lib/jenkins/slave.py" ]
diff --git a/contrib/ci/jenkins-community-slave/slave.py b/contrib/ci/jenkins-community-slave/slave.py
new file mode 100644
index 00000000..87a59e24
--- /dev/null
+++ b/contrib/ci/jenkins-community-slave/slave.py
@@ -0,0 +1,103 @@
+from jenkins import Jenkins, JenkinsError, NodeLaunchMethod
+import os
+import signal
+import sys
+import urllib
+import subprocess
+import shutil
+import requests
+import time
+
+slave_jar = '/var/lib/jenkins/slave.jar'
+slave_name = os.environ['SLAVE_NAME'] if os.environ['SLAVE_NAME'] != '' else 'docker-slave-' + os.environ['HOSTNAME']
+jnlp_url = os.environ['JENKINS_URL'] + '/computer/' + slave_name + '/slave-agent.jnlp'
+slave_jar_url = os.environ['JENKINS_URL'] + '/jnlpJars/slave.jar'
+print(slave_jar_url)
+process = None
+
+def clean_dir(dir):
+    for root, dirs, files in os.walk(dir):
+        for f in files:
+            os.unlink(os.path.join(root, f))
+        for d in dirs:
+            shutil.rmtree(os.path.join(root, d))
+
+def slave_create(node_name, working_dir, executors, labels):
+    j = Jenkins(os.environ['JENKINS_URL'], os.environ['JENKINS_USER'], os.environ['JENKINS_PASS'])
+    j.node_create(node_name, working_dir, num_executors = int(executors), labels = labels, launcher = NodeLaunchMethod.JNLP)
+
+def slave_delete(node_name):
+    j = Jenkins(os.environ['JENKINS_URL'], os.environ['JENKINS_USER'], os.environ['JENKINS_PASS'])
+    j.node_delete(node_name)
+
+def slave_download(target):
+    if os.path.isfile(slave_jar):
+        os.remove(slave_jar)
+
+    loader = urllib.URLopener()
+    loader.retrieve(os.environ['JENKINS_URL'] + '/jnlpJars/slave.jar', '/var/lib/jenkins/slave.jar')
+
+def slave_run(slave_jar, jnlp_url):
+    params = [ 'java', '-jar', slave_jar, '-jnlpUrl', jnlp_url ]
+    if os.environ['JENKINS_SLAVE_ADDRESS'] != '':
+        params.extend([ '-connectTo', os.environ['JENKINS_SLAVE_ADDRESS' ] ])
+
+    if os.environ['SLAVE_SECRET'] == '':
+        params.extend([ '-jnlpCredentials', os.environ['JENKINS_USER'] + ':' + os.environ['JENKINS_PASS'] ])
+    else:
+        params.extend([ '-secret', os.environ['SLAVE_SECRET'] ])
+    return subprocess.Popen(params, stdout=subprocess.PIPE)
+
+def signal_handler(sig, frame):
+    if process != None:
+        process.send_signal(signal.SIGINT)
+
+signal.signal(signal.SIGINT, signal_handler)
+signal.signal(signal.SIGTERM, signal_handler)
+
+def h():
+    print("ERROR!: please specify environment variables")
+    print("")
+    print('docker run -e "SLAVE_NAME=test" -e "SLAVE_SECRET=..." jenkins')
+
+if os.environ.get('SLAVE_NAME') is None:
+    h()
+    sys.exit(1)
+
+if os.environ.get('SLAVE_SECRET') is None:
+    h()
+    sys.exit(1)
+
+def master_ready(url):
+    try:
+        r = requests.head(url, verify=False, timeout=None)
+        return r.status_code == requests.codes.ok
+    except:
+        return False
+
+while not master_ready(slave_jar_url):
+    print("Master not ready yet, sleeping for 10sec!")
+    time.sleep(10)
+
+slave_download(slave_jar)
+print 'Downloaded Jenkins slave jar.'
+
+if os.environ['SLAVE_WORING_DIR']:
+    os.setcwd(os.environ['SLAVE_WORING_DIR'])
+
+if os.environ['CLEAN_WORKING_DIR'] == 'true':
+    clean_dir(os.getcwd())
+    print "Cleaned up working directory."
+
+if os.environ['SLAVE_NAME'] == '':
+    slave_create(slave_name, os.getcwd(), os.environ['SLAVE_EXECUTORS'], os.environ['SLAVE_LABELS'])
+    print 'Created temporary Jenkins slave.'
+
+process = slave_run(slave_jar, jnlp_url)
+print 'Started Jenkins slave with name "' + slave_name + '" and labels [' + os.environ['SLAVE_LABELS'] + '].'
+process.wait()
+
+print 'Jenkins slave stopped.'
+if os.environ['SLAVE_NAME'] == '':
+    slave_delete(slave_name)
+    print 'Removed temporary Jenkins slave.'