On 04/26/2010 01:03 PM, Jason Wang wrote:
> Sometimes we need to send an assist string to a session in order to
> get the prompt especially when re-connecting to an already logged
> serial session. This patch send the assist string before doing the
> pattern matching of remote_login.
Can you give an example of a prompt assist string, and a typical usage
example? What guests require prompt assist strings?
> Signed-off-by: Jason Wang <jasow...@redhat.com>
> ---
> client/tests/kvm/kvm_utils.py | 9 +++++++--
> 1 files changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/client/tests/kvm/kvm_utils.py b/client/tests/kvm/kvm_utils.py
> index 25f3c8c..9adbaee 100644
> --- a/client/tests/kvm/kvm_utils.py
> +++ b/client/tests/kvm/kvm_utils.py
> @@ -451,7 +451,8 @@ def check_kvm_source_dir(source_dir):
> # The following are functions used for SSH, SCP and Telnet communication with
> # guests.
>
> -def remote_login(command, password, prompt, linesep="\n", timeout=10):
> +def remote_login(command, password, prompt, linesep="\n", timeout=10,
> + prompt_assist = None):
^ ^
These spaces do not conform with PEP 8.
> """
> Log into a remote host (guest) using SSH or Telnet. Run the given command
> using kvm_spawn and provide answers to the questions asked. If timeout
> @@ -468,7 +469,8 @@ def remote_login(command, password, prompt, linesep="\n",
> timeout=10):
> @param timeout: The maximal time duration (in seconds) to wait for each
> step of the login procedure (i.e. the "Are you sure" prompt, the
> password prompt, the shell prompt, etc)
> -
> + @prarm prompt_assist: An assistant string sent before the pattern
Typo ^
> + matching in order to get the prompt for some kinds of
> shell_client.
> @return Return the kvm_spawn object on success and None on failure.
> """
> sub = kvm_subprocess.kvm_shell_session(command,
> @@ -479,6 +481,9 @@ def remote_login(command, password, prompt, linesep="\n",
> timeout=10):
>
> logging.debug("Trying to login with command '%s'" % command)
>
> + if prompt_assist is not None:
> + sub.sendline(prompt_assist)
> +
> while True:
> (match, text) = sub.read_until_last_line_matches(
> [r"[Aa]re you sure", r"[Pp]assword:\s*$",
> r"^\s*[Ll]ogin:\s*$",
>
> --
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