You have been requested to review the proposed merge of ~knobby/nagios-layer:mwilson/utils into nagios-layer:master.
For more details, see: https://code.launchpad.net/~knobby/nagios-layer/+git/nagios-layer/+merge/373525 Adding some library functions to the layer for charms to install and remove plugins. -- Your team Nagios Charm developers is requested to review the proposed merge of ~knobby/nagios-layer:mwilson/utils into nagios-layer:master.
diff --git a/lib/charms/layer/nagios.py b/lib/charms/layer/nagios.py new file mode 100644 index 0000000..7aeb3f8 --- /dev/null +++ b/lib/charms/layer/nagios.py @@ -0,0 +1,60 @@ +from pathlib import Path + +NAGIOS_PLUGINS_DIR = '/usr/lib/nagios/plugins' + + +def install_nagios_plugin_from_text(text, plugin_name): + """ Install a nagios plugin. + + Args: + test: Source file text to install + plugin_name: Name of the plugin in nagios + + Returns: Full path to installed plugin + """ + dest_path = Path(NAGIOS_PLUGINS_DIR) / plugin_name + if dest_path.exists(): + # we could complain here, test the files are the same contents, or + # just bail. Idempotency is a big deal in Juju, so I'd like to be + # ok with being called with the same file multiple times, but we + # certainly want to catch the case where multiple layers are using + # the same filename for their nagios checks. + dest = dest_path.read_text() + if dest == text: + # same file + return dest_path + # different file contents! + # maybe someone changed options or something so we need to write + # it again + + dest_path.write_text(text) + dest_path.chmod(0o755) + + return dest_path + + +def install_nagios_plugin_from_file(source_file_path, plugin_name): + """ Install a nagios plugin. + + Args: + source_file_path: File that is copied to create plugin + plugin_name: Name of the plugin in nagios + + Returns: Full path to installed plugin + """ + + return install_nagios_plugin_from_text(Path(source_file_path).read_text(), + plugin_name) + + +def remove_nagios_plugin(plugin_name): + """ Remove a nagios plugin. + + Args: + plugin_name: Plugin name that was passed to install_plugin + + Returns: None + """ + dest_path = Path(NAGIOS_PLUGINS_DIR) / plugin_name + if dest_path.exists(): + dest_path.unlink()
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