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from typing import Dict, Optional, Union
from telegraf.utils import format_string, format_value, ValueType
class Line(object):
def __init__(self,
measurement: ValueType,
values: Union[Dict[str, ValueType], ValueType],
tags: Optional[Dict[str, str]] = None,
timestamp: Optional[int] = None) -> None:
self.measurement = measurement
self.values = values
self.tags = tags
self.timestamp = timestamp
def get_output_measurement(self) -> str:
return format_string(self.measurement)
def get_output_values(self) -> str:
if not isinstance(self.values, dict):
metric_values = {'value': self.values}
else:
metric_values = self.values
sorted_values = sorted(metric_values.items())
sorted_values = [(k, v) for k, v in sorted_values if v is not None]
return ','.join('{0}={1}'.format(format_string(k), format_value(v)) for k, v in sorted_values)
def get_output_tags(self) -> str:
if not self.tags:
self.tags = dict()
sorted_tags = sorted(self.tags.items())
return ','.join('{0}={1}'.format(format_string(k), format_string(v)) for k, v in sorted_tags)
def get_output_timestamp(self) -> str:
return ' {0}'.format(self.timestamp) if self.timestamp else ''
def to_line_protocol(self) -> str:
tags = self.get_output_tags()
return '{0}{1} {2}{3}'.format(
self.get_output_measurement(),
"," + tags if tags else '',
self.get_output_values(),
self.get_output_timestamp()
)
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