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Python ebay watcher5/18/2023 In my example I have used some variables just to made the configuration of the event handler a little bit easier to be undestood. If _name_ = "_main_" : patterns = ignore_patterns = None ignore_directories = False case_sensitive = True my_event_handler = PatternMatchingEventHandler ( patterns, ignore_patterns, ignore_directories, case_sensitive ) Now, create your virtual environment (optional but raccomended… at least by me), activate it and install the package watchdog with the following command: If you want to find out more about virtual environments (that’s probabilly because you haven’t read all my previous post, so shame on you!), just have a look at this article. As always, I raccomand to use virtual environments instead of installing packages system wide. To code this program we will need an additional module called “watchdog” (wow, who could have guessed it?) written by Yesudeep Mangalapilly, so let’s start by installing it. So, today we will code a watchdog in Python. Your program could set a watchdog to monitor that file and if the configuration file is modified you could think to reload it and apply the new configuration at runtime, without the need of restarting your program. When a change occurs, the watchdog report it to us raising a specific event that we can handle.įor example, let’s suppose you have developed a program that use a configuration file. But what is a “watchdog”?Ī watchdog is a little piece of software that monitors our filesystem looking for any changes (like the creation, change or deletion of a file or of a directory). Hey guys, today’s post is about how to create a watchdog in Python. Make sure that your Openstack credentials are correct.How to create a watchdog in Python to look for filesystem changes Install the openstack CLI : # pip install python-openstackclient Or: # openstack -debug optimize audittemplate list If any watcher command fails, you can obtain more details with the -debug option : # watcher -debug audittemplate list Or: # openstack help optimize Troubleshootings You can view the entire list of available Watcher commands and options using this command: # watcher help Or: # openstack optimize audittemplate list You should be able to launch the following command which gets the list of previously created Audit Templates: # watcher audittemplate list Source these credentials into your current shell session: # source creds To install it, you have just to run this command: sudo pip install python-openstackclient ConfigurationĬreate a creds file containing your OpenStack credentials: export OS_IDENTITY_API_VERSION=3Įxport OS_AUTH_URL= export OS_PROJECT_DOMAIN_ID=default You can also use the OpenStack client with Watcher (our watcher plugin for OpenStack client is included in the python-watcherclient package). You can install the Watcher CLI with the following command: sudo pip install python-watcherclient On openSUSE-based distributions (SLES 12, openSUSE 13.1, Factory or Tumbleweed) sudo zypper install gcc git libmysqlclient-devel libopenssl-devel postgresql-devel python-devel python-pip Install the Watcher client On Fedora-based distributions e.g., Fedora/RHEL/CentOS/Scientific Linux (tested on CentOS 6.5) sudo yum install python-virtualenv openssl-devel python-pip git gcc libffi-devel mysql-devel postgresql-devel On Ubuntu (tested on 14.04-64) sudo apt-get install python-dev libssl-dev python-pip git-core libmysqlclient-dev libffi-dev Installation Install the prerequisite packages This provides a robust framework to realize a wide range of cloud optimization goals, including the reduction of data center operating costs, increased system performance via intelligent virtual machine migration, increased energy efficiency and more! Watcher provides a complete optimization loop-including everything from a metrics receiver, complex event processor and profiler, optimization processor and an action plan applier. OpenStack Watcher provides a flexible and scalable resource optimization service for multi-tenant OpenStack-based clouds. Replace URLs with URLsĬlient for resource optimization service for OpenStack. Update the documentation link for doc migration Switch to 2023.1 Python3 unit tests and generic template name Merge "Use unittest.mock instead of third party mock"Īdd openstack-cover-jobs for watcherclient Merge "Switch to 2023.1 Python3 unit tests and generic template name"
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