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idna / lib / python2.7 / site-packages / oslo_concurrency / processutils.pyc
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d6dd6dd6dd6Zd„Zd„ZRS(sjResource limits on a process.

    Attributes:

    * address_space: Address space limit in bytes
    * core_file_size: Core file size limit in bytes
    * cpu_time: CPU time limit in seconds
    * data_size: Data size limit in bytes
    * file_size: File size limit in bytes
    * memory_locked: Locked memory limit in bytes
    * number_files: Maximum number of open files
    * number_processes: Maximum number of processes
    * resident_set_size: Maximum Resident Set Size (RSS) in bytes
    * stack_size: Stack size limit in bytes

    This object can be used for the *prlimit* parameter of :func:`execute`.
    s--ast
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|!t5ƒrtd)ƒ}"tj||"i|!j9d*6|!j:d(6|!j;d+6|!j<d!6|!j=d"6ƒq3td,ƒ}"tj||"i|d(6|!j>d-6ƒn|sXtj|td.ƒ|ƒ‚q›tj|td/ƒ|ƒ|r›t?j@tAjBd0d1ƒd2ƒq›nXWd&t?j@dƒXqWWd&S(3s`Helper method to shell out and execute a command through subprocess.

    Allows optional retry.

    :param cmd:             Passed to subprocess.Popen.
    :type cmd:              string
    :param cwd:             Set the current working directory
    :type cwd:              string
    :param process_input:   Send to opened process.
    :type process_input:    string or bytes
    :param env_variables:   Environment variables and their values that
                            will be set for the process.
    :type env_variables:    dict
    :param check_exit_code: Single bool, int, or list of allowed exit
                            codes.  Defaults to [0].  Raise
                            :class:`ProcessExecutionError` unless
                            program exits with one of these code.
    :type check_exit_code:  boolean, int, or [int]
    :param delay_on_retry:  True | False. Defaults to True. If set to True,
                            wait a short amount of time before retrying.
    :type delay_on_retry:   boolean
    :param attempts:        How many times to retry cmd.
    :type attempts:         int
    :param run_as_root:     True | False. Defaults to False. If set to True,
                            the command is prefixed by the command specified
                            in the root_helper kwarg.
    :type run_as_root:      boolean
    :param root_helper:     command to prefix to commands called with
                            run_as_root=True
    :type root_helper:      string
    :param shell:           whether or not there should be a shell used to
                            execute this command. Defaults to false.
    :type shell:            boolean
    :param loglevel:        log level for execute commands.
    :type loglevel:         int.  (Should be logging.DEBUG or logging.INFO)
    :param log_errors:      Should stdout and stderr be logged on error?
                            Possible values are
                            :py:attr:`~.LogErrors.DEFAULT`,
                            :py:attr:`~.LogErrors.FINAL`, or
                            :py:attr:`~.LogErrors.ALL`. Note that the
                            values :py:attr:`~.LogErrors.FINAL` and
                            :py:attr:`~.LogErrors.ALL`
                            are **only** relevant when multiple attempts of
                            command execution are requested using the
                            ``attempts`` parameter.
    :type log_errors:       :py:class:`~.LogErrors`
    :param binary:          On Python 3, return stdout and stderr as bytes if
                            binary is True, as Unicode otherwise.
    :type binary:           boolean
    :param on_execute:      This function will be called upon process creation
                            with the object as a argument.  The Purpose of this
                            is to allow the caller of `processutils.execute` to
                            track process creation asynchronously.
    :type on_execute:       function(:class:`subprocess.Popen`)
    :param on_completion:   This function will be called upon process
                            completion with the object as a argument.  The
                            Purpose of this is to allow the caller of
                            `processutils.execute` to track process completion
                            asynchronously.
    :type on_completion:    function(:class:`subprocess.Popen`)
    :param preexec_fn:      This function will be called
                            in the child process just before the child
                            is executed. WARNING: On windows, we silently
                            drop this preexec_fn as it is not supported by
                            subprocess.Popen on windows (throws a
                            ValueError)
    :type preexec_fn:       function()
    :param prlimit:         Set resource limits on the child process. See
                            below for a detailed description.
    :type prlimit:          :class:`ProcessLimits`
    :returns:               (stdout, stderr) from process execution
    :raises:                :class:`UnknownArgumentError` on
                            receiving unknown arguments
    :raises:                :class:`ProcessExecutionError`
    :raises:                :class:`OSError`

    The *prlimit* parameter can be used to set resource limits on the child
    process.  If this parameter is used, the child process will be spawned by a
    wrapper process which will set limits before spawning the command.

    .. versionchanged:: 3.17
       *process_input* can now be either bytes or string on python3.

    .. versionchanged:: 3.4
       Added *prlimit* optional parameter.

    .. versionchanged:: 1.5
       Added *cwd* optional parameter.

    .. versionchanged:: 1.9
       Added *binary* optional parameter. On Python 3, *stdout* and *stderr*
       are now returned as Unicode strings by default, or bytes if *binary* is
       true.

    .. versionchanged:: 2.1
       Added *on_execute* and *on_completion* optional parameters.

    .. versionchanged:: 2.3
       Added *preexec_fn* optional parameter.
    tcwdt
process_inputt
env_variablestcheck_exit_codeitdelay_on_retrytattemptsitrun_as_roottroot_helperttshelltloglevelt
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command: %(cmd)r
exit code: %(code)r
stdout: %(stdout)r
stderr: %(stderr)rtdesctcodes0Got an OSError
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(	cOs‰|jdtƒ}yt||Ž\}}t}Wn/tk
rb}dtj|ƒ}}t}nX|r|r|rd}n||fS(s•A wrapper around execute() to more easily handle warnings and errors.

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    the command's stdout and stderr.  If 'err' is not empty then the
    command can be considered to have failed.

    :discard_warnings   True | False. Defaults to False. If set to True,
                        then for succeeding commands, stderr is cleared

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	c	CsÁtj|ƒ}tjd|ƒ|r:ttdƒƒ‚n|rUttdƒƒ‚n|j|d|ƒ\}}	}
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fS(sfRun a command through SSH.

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       Added *binary* optional parameter.
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r"dSXdS(s¤Utility to get the default worker count.

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             worker count of 1 is returned.
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