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# The MIT License (MIT)
# Copyright (c) 2013 InfluxDB
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in
# the Software without restriction, including without limitation the rights to
# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
# of the Software, and to permit persons to whom the Software is furnished to
# do so, subject to the following conditions:
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# yardstick comment: this file is a modified copy of
# influxdb-python/influxdb/line_protocol.py
from __future__ import absolute_import
from __future__ import unicode_literals
from copy import copy
from oslo_utils import encodeutils
from six import binary_type, text_type, integer_types
def _escape_tag(tag):
tag = _get_unicode(tag, force=True)
return tag.replace(
"\\", "\\\\"
).replace(
" ", "\\ "
).replace(
",", "\\,"
).replace(
"=", "\\="
)
def _escape_value(value):
value = _get_unicode(value)
if isinstance(value, text_type) and value != '':
return "\"{}\"".format(
value.replace(
"\"", "\\\""
).replace(
"\n", "\\n"
)
)
elif isinstance(value, integer_types) and not isinstance(value, bool):
return str(value) + 'i'
else:
return str(value)
def _get_unicode(data, force=False):
"""
Try to return a text aka unicode object from the given data.
"""
if isinstance(data, binary_type):
return encodeutils.safe_decode(data, 'utf-8')
elif data is None:
return ''
elif force:
return str(data)
else:
return data
def make_lines(data):
"""
Extracts the points from the given dict and returns a Unicode string
matching the line protocol introduced in InfluxDB 0.9.0.
line protocol format:
<measurement>[,<tag-key>=<tag-value>...] <field-key>=<field-value>\
[,<field2-key>=<field2-value>...] [unix-nano-timestamp]
Ref:
https://influxdb.com/docs/v0.9/write_protocols/write_syntax.html
https://influxdb.com/docs/v0.9/write_protocols/line.html
"""
lines = []
static_tags = data.get('tags', None)
for point in data['points']:
elements = []
# add measurement name
measurement = _escape_tag(_get_unicode(
point.get('measurement', data.get('measurement'))
))
key_values = [measurement]
# add tags
if static_tags is None:
tags = point.get('tags', {})
else:
tags = copy(static_tags)
tags.update(point.get('tags', {}))
# tags should be sorted client-side to take load off server
for tag_key in sorted(tags.keys()):
key = _escape_tag(tag_key)
value = _escape_tag(tags[tag_key])
if key != '' and value != '':
key_values.append("{key}={value}".format(key=key, value=value))
key_values = ','.join(key_values)
elements.append(key_values)
# add fields
field_values = []
for field_key in sorted(point['fields'].keys()):
key = _escape_tag(field_key)
value = _escape_value(point['fields'][field_key])
if key != '' and value != '':
field_values.append("{key}={value}".format(
key=key,
value=value
))
field_values = ','.join(field_values)
elements.append(field_values)
# add timestamp
if 'time' in point:
elements.append(point['time'])
line = ' '.join(elements)
lines.append(line)
lines = '\n'.join(lines)
return lines + '\n'
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