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airstream/frametypes/ptp_sync.py

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2025-08-03 20:20:55 -04:00
import statistics
from typing import Dict, List, Any
from scapy.all import Packet
from .base import FrameTypeInterface
class PTPSyncStats(FrameTypeInterface):
"""PTP Sync Message Statistics"""
def __init__(self):
super().__init__()
self.name = "PTP Sync"
self.count = 0
self.bytes = 0
self.first_time = None
self.last_time = None
self.sync_count = 0
self.follow_up_count = 0
self.two_step_count = 0
self.one_step_count = 0
self.sync_intervals = []
self.clock_ids = set()
def add(self, timestamp: float, size: int, packet: Packet):
self.count += 1
self.bytes += size
if self.first_time is None:
self.first_time = timestamp
else:
if self.last_time and self.sync_count > 0:
self.sync_intervals.append(timestamp - self.last_time)
self.last_time = timestamp
# In real implementation, decode PTP sync messages
def get_summary_dict(self) -> Dict[str, Any]:
duration = (self.last_time or 0) - (self.first_time or 0)
avg_interval = statistics.mean(self.sync_intervals) if self.sync_intervals else 0
return {
'Pkts': self.count,
'Sync Msgs': self.sync_count,
'Follow-ups': self.follow_up_count,
'Two-step': self.two_step_count,
'One-step': self.one_step_count,
'Clock IDs': len(self.clock_ids),
'Avg Interval': round(avg_interval, 6)
}
def get_column_definitions(self) -> List[tuple]:
return [
('Pkts', 'd'),
('Sync Msgs', 'd'),
('Follow-ups', 'd'),
('Two-step', 'd'),
('One-step', 'd'),
('Clock IDs', 'd'),
('Avg Interval', '.6f')
]