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https://github.com/home-assistant/supervisor.git
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eebe90bd14
* Add support for stats & code cleanup * Add more stats * Move code into own object * Add to API * Update API * Add error handling * fix lint * fix block io
91 lines
2.6 KiB
Python
91 lines
2.6 KiB
Python
"""Calc & represent docker stats data."""
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from contextlib import suppress
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class DockerStats(object):
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"""Hold stats data from container inside."""
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def __init__(self, stats):
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"""Initialize docker stats."""
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self._cpu = 0.0
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self._network_rx = 0
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self._network_tx = 0
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self._blk_read = 0
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self._blk_write = 0
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try:
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self._memory_usage = stats['memory_stats']['usage']
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self._memory_limit = stats['memory_stats']['limit']
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except KeyError:
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self._memory_usage = 0
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self._memory_limit = 0
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with suppress(KeyError):
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self._calc_cpu_percent(stats)
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with suppress(KeyError):
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self._calc_network(stats['networks'])
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with suppress(KeyError):
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self._calc_block_io(stats['blkio_stats'])
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def _calc_cpu_percent(self, stats):
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"""Calculate CPU percent."""
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cpu_delta = stats['cpu_stats']['cpu_usage']['total_usage'] - \
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stats['precpu_stats']['cpu_usage']['total_usage']
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system_delta = stats['cpu_stats']['system_cpu_usage'] - \
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stats['precpu_stats']['system_cpu_usage']
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if system_delta > 0.0 and cpu_delta > 0.0:
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self._cpu = (cpu_delta / system_delta) * \
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len(stats['cpu_stats']['cpu_usage']['percpu_usage']) * 100.0
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def _calc_network(self, networks):
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"""Calculate Network IO stats."""
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for _, stats in networks.items():
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self._network_rx += stats['rx_bytes']
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self._network_tx += stats['tx_bytes']
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def _calc_block_io(self, blkio):
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"""Calculate block IO stats."""
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for stats in blkio['io_service_bytes_recursive']:
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if stats['op'] == 'Read':
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self._blk_read += stats['value']
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elif stats['op'] == 'Write':
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self._blk_write += stats['value']
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@property
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def cpu_percent(self):
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"""Return CPU percent."""
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return self._cpu
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@property
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def memory_usage(self):
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"""Return memory usage."""
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return self._memory_usage
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@property
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def memory_limit(self):
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"""Return memory limit."""
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return self._memory_limit
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@property
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def network_rx(self):
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"""Return network rx stats."""
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return self._network_rx
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@property
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def network_tx(self):
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"""Return network rx stats."""
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return self._network_tx
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@property
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def blk_read(self):
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"""Return block IO read stats."""
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return self._blk_read
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@property
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def blk_write(self):
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"""Return block IO write stats."""
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return self._blk_write
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