Re: [PATCH v2 10/10] KVM test: Add a helper to search the panic in the log

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On 05/11/2010 12:04 PM, Jason Wang wrote:
> This checker serves as the post_command to find the panic information
> in the file which contains the content of guest serial console.
> 
> Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>
> ---
>  client/tests/kvm/scripts/check_serial.py |   41 ++++++++++++++++++++++++++++++
>  client/tests/kvm/tests_base.cfg.sample   |    7 ++++-
>  2 files changed, 46 insertions(+), 2 deletions(-)
>  create mode 100644 client/tests/kvm/scripts/check_serial.py
> 
> diff --git a/client/tests/kvm/scripts/check_serial.py b/client/tests/kvm/scripts/check_serial.py
> new file mode 100644
> index 0000000..969bbe3
> --- /dev/null
> +++ b/client/tests/kvm/scripts/check_serial.py
> @@ -0,0 +1,41 @@
> +import os, sys, glob, re
> +
> +
> +class SerialCheckerError(Exception):
> +    """
> +    Simple wrapper for the builtin Exception class.
> +    """
> +    pass
> +
> +
> +class SerialChecker(object):
> +    """
> +    Serach the panic or other keywords in the guest serial.
> +    """
> +    def __init__(self):
> +        """
> +        Gets params from environment variables and sets class attributes.
> +        """
> +        client_dir =  os.environ['AUTODIR']
> +        self.pattern = os.environ['KVM_TEST_search_pattern']
> +        self.shortname = os.environ['KVM_TEST_shortname']
> +        self.debugdir = os.path.join(client_dir, "results/default/kvm.%s/debug" \

I think the final backslash is unnecessary.

> +                                     % self.shortname)
> +        self.serial_files = glob.glob(os.path.join(self.debugdir, 'serial*'))
> +
> +
> +    def check(self):
> +        """
> +        Check whether the pattern were found in the serial files
> +        """
> +        fail = [ f for f in self.serial_files if
> +                 re.findall(self.pattern, file(f).read(), re.I) ]
> +        if fail:
> +            print "%s is found in %s" % (self.pattern, fail)
> +            raise SerialCheckerError("Error found during the check, Please" \

Same here.

> +                                     " check the log")
> +
> +
> +if __name__ == "__main__":
> +    checker = SerialChecker()
> +    checker.check()

I wonder why we need a class.  Why not just put all the code here?

> diff --git a/client/tests/kvm/tests_base.cfg.sample b/client/tests/kvm/tests_base.cfg.sample
> index 3c0933e..3ac8f0d 100644
> --- a/client/tests/kvm/tests_base.cfg.sample
> +++ b/client/tests/kvm/tests_base.cfg.sample
> @@ -52,6 +52,10 @@ address_index = 0
>  # Misc
>  profilers = kvm_stat
>  
> +# pattern serach in guest serial console
> +serach_pattern = panic
> +post_command = "python scripts/check_serial.py"
> +post_command_noncritical = no
>  
>  # Tests
>  variants:
> @@ -1314,10 +1318,9 @@ virtio|virtio_blk|e1000|balloon_check:
>  variants:
>      - @qcow2:
>          image_format = qcow2
> -        post_command = " python scripts/check_image.py;"
> +        post_command = " python scripts/check_image.py; python scripts/check_serial.py"
                        ^
This should be +=, because post_command may have been previously
assigned some value.

>          remove_image = no
>          post_command_timeout = 600
> -        post_command_noncritical = yes
>      - vmdk:
>          only Fedora Ubuntu Windows
>          only smp2
> 
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