Skip to content

Instantly share code, notes, and snippets.

Lukas Krejci metlos

View GitHub Profile
public class PythonScriptEngineProvider implements ScriptEngineProvider {
public String getSupportedLanguage() {
return "python";
public ScriptEngineInitializer getInitializer() {
return new PythonScriptEngineInitializer();
metlos /
Created Jul 12, 2012
public class PythonScriptEngineInitializer implements ScriptEngineInitializer {
private static final Log LOG = LogFactory.getLog(PythonScriptEngineInitializer.class);
static {
Properties props = new Properties();
props.put("python.packages.paths", "java.class.path,sun.boot.class.path");
props.put("python.packages.directories", "java.ext.dirs");
props.put("python.cachedir.skip", false);
PythonInterpreter.initialize(System.getProperties(), props, null);
metlos /
Created Jul 12, 2012
Importing script from RHQ server
import sys
import my_script as foo
View rhq-plugin.xml
<destination-base-dir name="Deploy Directory" description="The deployment directory for a standalone server">
<special-destination name="Patch Installer" description="Accepts JBoss AS patches and installs them to a standalone server" bundle-type="JBoss AS Patch Bundle">
<value-reference reference-name="host" context="pluginConfiguration" name="hostname"/>
<value-reference context="pluginConfiguration" name="port"/>
<value-reference context="pluginConfiguration" name="user"/>
metlos / aliases
Last active Apr 30, 2018
git aliases for pull requests and other useful stuff
View aliases
tracking-branch = !git for-each-ref --format='%(upstream:short)' $(git symbolic-ref -q HEAD)
current-branch = !git rev-parse --abbrev-ref HEAD
#last commit
last = log -1
#assumes the upstream repo is called origin
* Copyright (c) 2004-2014, PostgreSQL Global Development Group
package org.postgresql.test.leaks;
import java.lang.ref.WeakReference;
View Inventory REST proposal
cpath of entity - enCpath
cpath of element - elCpath
general element
RUD -> /path/{elCpath} (or /element/{elCpath}? because this isn't consistent with the rest of the REST are we asking for the path of a {elCpath} ?)
CRUD -> /relationships/{enCpath}
metlos / commit-msg
Created Jan 16, 2019
auto-sign-off - almost identical to the sample commit-msg hook from git, only adding a newline between the commit message and the sign-off
View commit-msg
# An example hook script to check the commit log message.
# Called by "git commit" with one argument, the name of the file
# that has the commit message. The hook should exit with non-zero
# status after issuing an appropriate message if it wants to stop the
# commit. The hook is allowed to edit the commit message file.
# To enable this hook, rename this file to "commit-msg".
metlos / README.adoc
Created Feb 4, 2019
Sample Grafana dashboard for Che.
View README.adoc

This expects a datasource called "Che" in grafana.

To do that, simply create a new datasource in grafana UI with the type "Prometheus" and the URL pointing to the Prometheus server, e.g. http://prometheus:9090.

metlos / README.adoc
Last active Feb 5, 2019
Openshift Template for monitoring of Che server
View README.adoc

Import this into your Che installation to gain monitoring and visualization capabilities.

All you need to do is to create a route exposing your grafana service. Also make sure that Prometheus is configured to scrape your Che server correctly - look at the prometheus-config config map and make sure that the targets lists the correct hostname of the Che server within your project.

Also make sure that your Che server is configured to expose the metrics. The CHE_METRICS_ENABLED environment variable of the che deployment needs to be set to true.

To access the Grafana dashboard, use the username admin with password admin. Once in Grafana, you will see a preconfigured dashboard called "Che Server" containing some basic stats about the Che installation.

You can’t perform that action at this time.