[OE-core] [PATCH 09/28] oeqa.buildperf: add BuildPerfTest class

[Joshua G Lock]

On Fri, 2016-06-24 at 13:37 +0300, Markus Lehtonen wrote:
> The new class will be used as an abstract base class for build
> performance tests. This implementation contains some common
> functionality used in multiple tests, "copied" from the
> build-perf-test.sh shell script.
> 
> Signed-off-by: Markus Lehtonen <markus.lehtonen at linux.intel.com>
> ---
>  meta/lib/oeqa/buildperf/__init__.py |  2 +-
>  meta/lib/oeqa/buildperf/base.py     | 78
> ++++++++++++++++++++++++++++++++++++-
>  2 files changed, 78 insertions(+), 2 deletions(-)
> 
> diff --git a/meta/lib/oeqa/buildperf/__init__.py
> b/meta/lib/oeqa/buildperf/__init__.py
> index bab122e..3bee5b9 100644
> --- a/meta/lib/oeqa/buildperf/__init__.py
> +++ b/meta/lib/oeqa/buildperf/__init__.py
> @@ -10,4 +10,4 @@
>  # more details.
>  #
>  """Build performance tests"""
> -from .base import KernelDropCaches
> +from .base import BuildPerfTest, KernelDropCaches
> diff --git a/meta/lib/oeqa/buildperf/base.py
> b/meta/lib/oeqa/buildperf/base.py
> index 3cbdfa7..3ef0384 100644
> --- a/meta/lib/oeqa/buildperf/base.py
> +++ b/meta/lib/oeqa/buildperf/base.py
> @@ -10,7 +10,16 @@
>  # more details.
>  #
>  """Build performance test base classes and functionality"""
> -from oeqa.utils.commands import runCmd
> +import logging
> +import os
> +import shutil
> +import time
> +from datetime import datetime
> +
> +from oeqa.utils.commands import runCmd, get_bb_vars
> +
> +# Get logger for this module
> +log = logging.getLogger('build-perf')
>  
>  
>  class KernelDropCaches(object):
> @@ -44,3 +53,70 @@ class KernelDropCaches(object):
>          cmd += ['tee', '/proc/sys/vm/drop_caches']
>          input_data += b'3'
>          runCmd(cmd, data=input_data)
> +
> +
> +class BuildPerfTest(object):
> +    """Base class for build performance tests"""
> +    name = None
> +    description = None
> +
> +    def __init__(self, out_dir):
> +        self.out_dir = out_dir
> +        self.results = {'name':self.name,
> +                        'description': self.description,
> +                        'status': 'NOTRUN',
> +                        'start_time': None,
> +                        'elapsed_time': None,
> +                        'measurements': []}
> +        if not os.path.exists(self.out_dir):
> +            os.makedirs(self.out_dir)
> +        if not self.name:
> +            self.name = self.__class__.__name__
> +        self.bb_vars = get_bb_vars()
> +
> +    def run(self):
> +        """Run test"""
> +        self.results['status'] = 'FAILED'
> +        self.results['start_time'] = datetime.now()
> +        self._run()
> +        self.results['elapsed_time'] = (datetime.now() -
> +                                        self.results['start_time'])
> +        # Test is regarded as completed if it doesn't raise an
> exception
> +        self.results['status'] = 'COMPLETED'
> +
> +    def _run(self):
> +        """Actual test payload"""
> +        raise NotImplementedError
> +
> +    @staticmethod
> +    def force_rm(path):
> +        """Equivalent of 'rm -rf'"""

we have oe.path.remove() which does similar.

> +        if os.path.isfile(path) or os.path.islink(path):
> +            os.unlink(path)
> +        elif os.path.isdir(path):
> +            shutil.rmtree(path)
> +
> +    def rm_tmp(self):
> +        """Cleanup temporary/intermediate files and directories"""
> +        log.debug("Removing temporary and cache files")
> +        for name in ['bitbake.lock', 'conf/sanity_info',
> +                     self.bb_vars['TMPDIR']]:
> +            self.force_rm(name)
> +
> +    def rm_sstate(self):
> +        """Remove sstate directory"""
> +        log.debug("Removing sstate-cache")
> +        self.force_rm(self.bb_vars['SSTATE_DIR'])
> +
> +    def rm_cache(self):
> +        """Drop bitbake caches"""
> +        self.force_rm(self.bb_vars['PERSISTENT_DIR'])
> +
> +    @staticmethod
> +    def sync():
> +        """Sync and drop kernel caches"""
> +        log.debug("Syncing and dropping kernel caches""")
> +        KernelDropCaches.drop()
> +        os.sync()
> +        # Wait a bit for all the dirty blocks to be written onto
> disk
> +        time.sleep(3)
> -- 
> 2.6.6
>