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Diffstat (limited to 'collectors/python.d.plugin/README.md')
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1 files changed, 34 insertions, 21 deletions
diff --git a/collectors/python.d.plugin/README.md b/collectors/python.d.plugin/README.md index 673fc2c9..8955197a 100644 --- a/collectors/python.d.plugin/README.md +++ b/collectors/python.d.plugin/README.md @@ -9,21 +9,6 @@ 5. Allows each **module** to have one or more data collection **jobs** 6. Each **job** is collecting one or more metrics from a single data source -## Pull Request Checklist for Python Plugins - -This is a generic checklist for submitting a new Python plugin for Netdata. It is by no means comprehensive. - -At minimum, to be buildable and testable, the PR needs to include: - -* The module itself, following proper naming conventions: `python.d/<module_dir>/<module_name>.chart.py` -* A README.md file for the plugin under `python.d/<module_dir>`. -* The configuration file for the module: `conf.d/python.d/<module_name>.conf`. Python config files are in YAML format, and should include comments describing what options are present. The instructions are also needed in the configuration section of the README.md -* A basic configuration for the plugin in the appropriate global config file: `conf.d/python.d.conf`, which is also in YAML format. Either add a line that reads `# <module_name>: yes` if the module is to be enabled by default, or one that reads `<module_name>: no` if it is to be disabled by default. -* A line for the plugin in `python.d/Makefile.am` under `dist_python_DATA`. -* A line for the plugin configuration file in `conf.d/Makefile.am`, under `dist_pythonconfig_DATA` -* Optionally, chart information in `web/dashboard_info.js`. This generally involves specifying a name and icon for the section, and may include descriptions for the section or individual charts. - - ## Disclaimer Every module should be compatible with python2 and python3. @@ -36,7 +21,6 @@ Every configuration file must have one of two formats: ```yaml update_every : 2 # update frequency -retries : 1 # how many failures in update() is tolerated priority : 20000 # where it is shown on dashboard other_var1 : bla # variables passed to module @@ -48,7 +32,6 @@ other_var2 : alb ```yaml # module defaults: update_every : 2 -retries : 1 priority : 20000 local: # job name @@ -57,13 +40,25 @@ local: # job name other_job: priority : 5 # job position on dashboard - retries : 20 # job retries other_var2 : val # module specific variable ``` -`update_every`, `retries`, and `priority` are always optional. +`update_every` and `priority` are always optional. ---- +## How to debug a python module + +``` +# become user netdata +sudo su -s /bin/bash netdata +``` +Depending on where Netdata was installed, execute one of the following commands to trace the execution of a python module: + +``` +# execute the plugin in debug mode, for a specific module +/opt/netdata/usr/libexec/netdata/plugins.d/python.d.plugin <module> debug trace +/usr/libexec/netdata/plugins.d/python.d.plugin <module> debug trace +``` +Where `[module]` is the directory name under https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin ## How to write a new module @@ -74,7 +69,9 @@ Writing new python module is simple. You just need to remember to include 5 majo - **_get_data** method - all code needs to be compatible with Python 2 (**≥ 2.7**) *and* 3 (**≥ 3.1**) -If you plan to submit the module in a PR, make sure and go through the [PR checklist for new modules](#pull-request-checklist-for-python-plugins) beforehand to make sure you have updated all the files you need to. +If you plan to submit the module in a PR, make sure and go through the [PR checklist for new modules](#pull-request-checklist-for-python-plugins) beforehand to make sure you have updated all the files you need to. + +For a quick start, you can look at the [example plugin](example/example.chart.py). ### Global variables `ORDER` and `CHART` @@ -210,3 +207,19 @@ Sockets are accessed in non-blocking mode with 15 second timeout. After every execution of `_get_raw_data` socket is closed, to prevent this module needs to set `_keep_alive` variable to `True` and implement custom `_check_raw_data` method. `_check_raw_data` should take raw data and return `True` if all data is received otherwise it should return `False`. Also it should do it in fast and efficient way. + +## Pull Request Checklist for Python Plugins + +This is a generic checklist for submitting a new Python plugin for Netdata. It is by no means comprehensive. + +At minimum, to be buildable and testable, the PR needs to include: + +* The module itself, following proper naming conventions: `python.d/<module_dir>/<module_name>.chart.py` +* A README.md file for the plugin under `python.d/<module_dir>`. +* The configuration file for the module: `conf.d/python.d/<module_name>.conf`. Python config files are in YAML format, and should include comments describing what options are present. The instructions are also needed in the configuration section of the README.md +* A basic configuration for the plugin in the appropriate global config file: `conf.d/python.d.conf`, which is also in YAML format. Either add a line that reads `# <module_name>: yes` if the module is to be enabled by default, or one that reads `<module_name>: no` if it is to be disabled by default. +* A line for the plugin in `python.d/Makefile.am` under `dist_python_DATA`. +* A line for the plugin configuration file in `conf.d/Makefile.am`, under `dist_pythonconfig_DATA` +* Optionally, chart information in `web/dashboard_info.js`. This generally involves specifying a name and icon for the section, and may include descriptions for the section or individual charts. + +[]() |