The change updates the imports to use simplejson library and fixes three
unit tests. In particular TestUtils.test_parse_alarm_state_hist_message
has been slightly changed to make testing more robust.
Also, Python 2 specific implemetation has been removed from
influxdb.line_utils .
Additionally, standard library unittest.mock is used instead of the
third party mock lib.
Depends-On: https://review.opendev.org/718014
Depends-On: https://review.opendev.org/720188
Change-Id: I64b1a60e8be929c25c005a0f429b1274cb8570e6
Story: 2007549
Task: 39390
The main improvement comes from using the Influxdb Line Protocol. The
encoding methods in line_utils.py are like the ones used in the influxdb
client but optimized for our data
Additional improvement comes from avoiding calls to encode('utf8') as
the influxdb client already does that.
On my test system, these changes increased the number of measurements
processed from about 2200/second to about 3700/second. Measurement
processing time is now dominated by Kafka. Approximately, 35% of time
is spent reading from Kafka and approximately 22% of time is committing
offsets. Only 10% of the time is spent writing to Influxdb. About 30% of
the time is spent converting messages from the json string read from
Kafka into the Line Protocol format for Influxdb.
Once monasca-common is modified to use the faster kafka library,
performance should be even better.
I did try using ujson, but my tests showed it wasn't any faster than
the json package.
Change-Id: I2acf76d9a5f583c74a272e18350b9c0ad5883f95
Witek Bedyk