devlib/trace: Refactor trace to be collector

We now have have multiple `trace` instruments that do not match the
description and therefore are moved to have a more suitably named
hierarchy.

devlib/__init__.py

@@ -45,10 +45,10 @@ from devlib.derived import DerivedMeasurements, DerivedMetric
 from devlib.derived.energy import DerivedEnergyMeasurements
 from devlib.derived.fps import DerivedGfxInfoStats, DerivedSurfaceFlingerStats
 
-from devlib.trace.ftrace import FtraceCollector
-from devlib.trace.perf import PerfCollector
-from devlib.trace.serial_trace import SerialTraceCollector
-from devlib.trace.dmesg import DmesgCollector
+from devlib.collector.ftrace import FtraceCollector
+from devlib.collector.perf import PerfCollector
+from devlib.collector.serial_trace import SerialTraceCollector
+from devlib.collector.dmesg import DmesgCollector
 
 from devlib.host import LocalConnection
 from devlib.utils.android import AdbConnection

devlib/collector/__init__.py

@@ -16,7 +16,7 @@
 import logging
 
 
-class TraceCollector(object):
+class CollectorBase(object):
 
     def __init__(self, target):
         self.target = target

devlib/collector/dmesg.py

@@ -18,7 +18,7 @@ import re
 from itertools import takewhile
 from datetime import timedelta
 
-from devlib.trace import TraceCollector
+from devlib.collector import CollectorBase
 
 
 class KernelLogEntry(object):
@@ -121,7 +121,7 @@ class KernelLogEntry(object):
         )
 
 
-class DmesgCollector(TraceCollector):
+class DmesgCollector(CollectorBase):
     """
     Dmesg output collector.
 

devlib/collector/ftrace.py

@@ -23,7 +23,7 @@ import sys
 import contextlib
 from pipes import quote
 
-from devlib.trace import TraceCollector
+from devlib.collector import CollectorBase
 from devlib.host import PACKAGE_BIN_DIRECTORY
 from devlib.exception import TargetStableError, HostError
 from devlib.utils.misc import check_output, which, memoized
@@ -50,7 +50,7 @@ TIMEOUT = 180
 CPU_RE = re.compile(r'  Function \(CPU([0-9]+)\)')
 STATS_RE = re.compile(r'([^ ]*) +([0-9]+) +([0-9.]+) us +([0-9.]+) us +([0-9.]+) us')
 
-class FtraceCollector(TraceCollector):
+class FtraceCollector(CollectorBase):
 
     # pylint: disable=too-many-locals,too-many-branches,too-many-statements
     def __init__(self, target,

devlib/collector/logcat.py

@@ -16,10 +16,10 @@
 import os
 import shutil
 
-from devlib.trace import TraceCollector
+from devlib.collector import CollectorBase
 from devlib.utils.android import LogcatMonitor
 
-class LogcatCollector(TraceCollector):
+class LogcatCollector(CollectorBase):
 
     def __init__(self, target, regexps=None):
         super(LogcatCollector, self).__init__(target)

devlib/collector/perf.py

@@ -19,7 +19,7 @@ import time
 from past.builtins import basestring, zip
 
 from devlib.host import PACKAGE_BIN_DIRECTORY
-from devlib.trace import TraceCollector
+from devlib.collector import CollectorBase
 from devlib.utils.misc import ensure_file_directory_exists as _f
 
 
@@ -42,7 +42,7 @@ SIMPLEPERF_DEFAULT_EVENTS = [
 
 DEFAULT_EVENTS = {'perf':PERF_DEFAULT_EVENTS, 'simpleperf':SIMPLEPERF_DEFAULT_EVENTS}
 
-class PerfCollector(TraceCollector):
+class PerfCollector(CollectorBase):
     """
     Perf is a Linux profiling with performance counters.
     Simpleperf is an Android profiling tool with performance counters.

devlib/collector/screencapture.py

@@ -19,7 +19,7 @@ import sys
 import threading
 import time
 
-from devlib.trace import TraceCollector
+from devlib.collector import BaseCollector
 from devlib.exception import WorkerThreadError
 
 
@@ -66,7 +66,7 @@ class ScreenCapturePoller(threading.Thread):
         self.target.capture_screen(os.path.join(self.output_path, "screencap_{ts}.png"))
 
 
-class ScreenCaptureCollector(TraceCollector):
+class ScreenCaptureCollector(BaseCollector):
 
     def __init__(self, target, output_path=None, period=None):
         super(ScreenCaptureCollector, self).__init__(target)

devlib/collector/serial_trace.py

@@ -17,11 +17,11 @@ import shutil
 from tempfile import NamedTemporaryFile
 from pexpect.exceptions import TIMEOUT
 
-from devlib.trace import TraceCollector
+from devlib.collector import CollectorBase
 from devlib.utils.serial_port import get_connection
 
 
-class SerialTraceCollector(TraceCollector):
+class SerialTraceCollector(CollectorBase):
 
     @property
     def collecting(self):

devlib/collector/systrace.py

@@ -20,7 +20,7 @@ from shutil import copyfile
 from tempfile import NamedTemporaryFile
 
 from devlib.exception import TargetStableError, HostError
-from devlib.trace import TraceCollector
+from devlib.collector import CollectorBase
 import devlib.utils.android
 from devlib.utils.misc import memoized
 
@@ -33,7 +33,7 @@ DEFAULT_CATEGORIES = [
     'idle'
 ]
 
-class SystraceCollector(TraceCollector):
+class SystraceCollector(CollectorBase):
     """
     A trace collector based on Systrace