Statistics for precision of local chrony

1 files changed, 94 insertions, 0 deletions

diff --git a/python.d/chrony.chart.py b/python.d/chrony.chart.py
new file mode 100644
index 0000000000..a5afedda28
--- /dev/null
+++ b/python.d/chrony.chart.py
@@ -0,0 +1,94 @@
+# -*- coding: utf-8 -*-
+# Description: chrony netdata python.d module
+# Author: Dominik Schloesser (domschl)
+
+from base import ExecutableService
+
+# default module values (can be overridden per job in `config`)
+# update_every = 10
+priority = 60000
+retries = 10
+
+# charts order (can be overridden if you want less charts, or different order)
+ORDER = ['timediff', 'lastoffset', 'rmsoffset', 'rootdelay',
+         'rootdispersion', 'skew', 'frequency', 'residualfreq']
+
+CHARTS = {
+    # id: {
+    #     'options': [name, title, units, family, context, charttype],
+    #     'lines': [
+    #         [unique_dimension_name, name, algorithm, multiplier, divisor]
+    #     ]}
+    'timediff': {
+        'options': [None, "Difference system time to NTP", "us", 'chrony', 'chrony.timediff', 'line'],
+        'lines': [
+            ['timediff', None, 'absolute', 1, 1000]
+        ]},
+    'lastoffset': {
+        'options': [None, "Last offset", "us", 'chrony', 'chrony.lastoffset', 'line'],
+        'lines': [
+            ['lastoffset', None, 'absolute', 1, 1000]
+        ]},
+    'rmsoffset': {
+        'options': [None, "RMS offset", "us", 'chrony', 'chrony.rmsoffset', 'line'],
+        'lines': [
+            ['rmsoffset', None, 'absolute', 1, 1000]
+        ]},
+    'rootdelay': {
+        'options': [None, "Root delay", "us", 'chrony', 'chrony.rootdelay', 'line'],
+        'lines': [
+            ['rootdelay', None, 'absolute', 1, 1000]
+        ]},
+    'rootdispersion': {
+        'options': [None, "Root dispersion", "us", 'chrony', 'chrony.rootdispersion', 'line'],
+        'lines': [
+            ['rootdispersion', None, 'absolute', 1, 1000]
+        ]},
+    'skew': {
+        'options': [None, "Skew, error bound on frequency", "ppm", 'chrony', 'chrony.skew', 'line'],
+        'lines': [
+            ['skew', None, 'absolute', 1, 1000]
+        ]},
+    'frequency': {
+        'options': [None, "Frequency", "ppm", 'chrony', 'chrony.frequency', 'line'],
+        'lines': [
+            ['frequency', None, 'absolute', 1, 1000]
+        ]},
+    'residualfreq': {
+        'options': [None, "Residual frequency", "ppm", 'chrony', 'chrony.residualfreq', 'line'],
+        'lines': [
+            ['residualfreq', None, 'absolute', 1, 1000]
+        ]}
+}
+
+
+class Service(ExecutableService):
+    def __init__(self, configuration=None, name=None):
+        ExecutableService.__init__(
+            self, configuration=configuration, name=name)
+        self.command = "chronyc -n tracking"
+        self.order = ORDER
+        self.definitions = CHARTS
+        self.error("Chrony netdata started")
+
+    def _get_data(self):
+        """
+        Format data received from shell command
+        :return: dict
+        """
+        try:
+            # self.error("Chrony:" + self._get_raw_data())
+            chrony_dict = {ln.split(':', 1)[0].strip(): ln.split(':', 1)[1].strip().split(' ')[0]
+                           for ln in self._get_raw_data()[1:]}
+            return {'timediff': int(float(chrony_dict['System time']) * 1e9),
+                    'lastoffset': int(float(chrony_dict['Last offset']) * 1e9),
+                    'rmsoffset': int(float(chrony_dict['RMS offset']) * 1e9),
+                    'rootdelay': int(float(chrony_dict['Root delay']) * 1e9),
+                    'rootdispersion': int(float(chrony_dict['Root dispersion']) * 1e9),
+                    'skew': int(float(chrony_dict['Skew']) * 1e3),
+                    'frequency': int(float(chrony_dict['Frequency']) * 1e3),
+                    'residualfreq': int(float(chrony_dict['Residual freq']) * 1e3)
+                    }
+        except (ValueError, AttributeError):
+            self.error("Chrony parser exception")
+            return None