python-bpf/pythonbpf/trace.py

class TraceEvent:
    def __init__(self, timestamp, comm, pid, cpu, flags, message):
        """Represents a parsed trace pipe event"""
        self.timestamp = timestamp  # float: timestamp in seconds
        self.comm = comm            # str: command name
        self.pid = pid              # int: process ID
        self.cpu = cpu              # int: CPU number
        self.flags = flags          # str: trace flags
        self.message = message      # str: the actual message

    def __iter__(self):
        """Allow unpacking like the original BCC tuple"""
        yield self.comm
        yield self.pid
        yield self.cpu
        yield self.flags
        yield self.timestamp
        yield self.message


class TraceReader:
    def __init__(self, trace_pipe_path="/sys/kernel/debug/tracing/trace_pipe"):
        self.trace_pipe_path = trace_pipe_path
        self.file = None

    def __enter__(self):
        self.file = open(self.trace_pipe_path, "r")
        return self

    def __exit__(self, exc_type, exc_val, exc_tb):
        if self.file:
            self.file.close()

    def __iter__(self):
        while True:
            event = self.trace_fields()
            if event:
                yield event

    def trace_fields(self):
        """Read and parse one line from the trace pipe"""
        if not self.file:
            self.file = open(self.trace_pipe_path, "r")
        line = self.file.readline()
        if not line:
            return None
        # Parse the line into components (simplified)
        # Real implementation would need more robust parsing
        parts = self._parse_trace_line(line)
        return TraceEvent(*parts)

    def _parse_trace_line(self, line):
        # TODO: Implement
        pass