Synnefo » snf-ganeti

#!/usr/bin/python

#

# Copyright (C) 2006, 2007 Google Inc.

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful, but

# WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

# General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

# 02110-1301, USA.

"""Job related commands"""

# pylint: disable-msg=W0401,W0613,W0614,C0103

# W0401: Wildcard import ganeti.cli

# W0613: Unused argument, since all functions follow the same API

# W0614: Unused import %s from wildcard import (since we need cli)

# C0103: Invalid name gnt-job

import sys

from ganeti.cli import *

from ganeti import constants

from ganeti import errors

from ganeti import utils

from ganeti import cli

#: default list of fields for L{ListJobs}

_LIST_DEF_FIELDS = ["id", "status", "summary"]

#: map converting the job status contants to user-visible

#: names

_USER_JOB_STATUS = {

  constants.JOB_STATUS_QUEUED: "queued",

  constants.JOB_STATUS_WAITLOCK: "waiting",

  constants.JOB_STATUS_CANCELING: "canceling",

  constants.JOB_STATUS_RUNNING: "running",

  constants.JOB_STATUS_CANCELED: "canceled",

  constants.JOB_STATUS_SUCCESS: "success",

  constants.JOB_STATUS_ERROR: "error",

  }

def ListJobs(opts, args):

  """List the jobs

  @param opts: the command line options selected by the user

  @type args: list

  @param args: should be an empty list

  @rtype: int

  @return: the desired exit code

  """

  selected_fields = ParseFields(opts.output, _LIST_DEF_FIELDS)

  output = GetClient().QueryJobs(args, selected_fields)

  if not opts.no_headers:

    # TODO: Implement more fields

    headers = {

      "id": "ID",

      "status": "Status",

      "ops": "OpCodes",

      "opresult": "OpCode_result",

      "opstatus": "OpCode_status",

      "oplog": "OpCode_log",

      "summary": "Summary",

      "opstart": "OpCode_start",

      "opexec": "OpCode_exec",

      "opend": "OpCode_end",

      "start_ts": "Start",

      "end_ts": "End",

      "received_ts": "Received",

      }

  else:

    headers = None

  # change raw values to nicer strings

  for row_id, row in enumerate(output):

    if row is None:

      ToStderr("No such job: %s" % args[row_id])

      continue

    for idx, field in enumerate(selected_fields):

      val = row[idx]

      if field == "status":

        if val in _USER_JOB_STATUS:

          val = _USER_JOB_STATUS[val]

        else:

          raise errors.ProgrammerError("Unknown job status code '%s'" % val)

      elif field == "summary":

        val = ",".join(val)

      elif field in ("start_ts", "end_ts", "received_ts"):

        val = FormatTimestamp(val)

      elif field in ("opstart", "opexec", "opend"):

        val = [FormatTimestamp(entry) for entry in val]

      row[idx] = str(val)

  data = GenerateTable(separator=opts.separator, headers=headers,

                       fields=selected_fields, data=output)

  for line in data:

    ToStdout(line)

  return 0

def ArchiveJobs(opts, args):

  """Archive jobs.

  @param opts: the command line options selected by the user

  @type args: list

  @param args: should contain the job IDs to be archived

  @rtype: int

  @return: the desired exit code

  """

  client = GetClient()

  rcode = 0

  for job_id in args:

    if not client.ArchiveJob(job_id):

      ToStderr("Failed to archive job with ID '%s'", job_id)

      rcode = 1

  return rcode

def AutoArchiveJobs(opts, args):

  """Archive jobs based on age.

  This will archive jobs based on their age, or all jobs if a 'all' is

  passed.

  @param opts: the command line options selected by the user

  @type args: list

  @param args: should contain only one element, the age as a time spec

      that can be parsed by L{ganeti.cli.ParseTimespec} or the

      keyword I{all}, which will cause all jobs to be archived

  @rtype: int

  @return: the desired exit code

  """

  client = GetClient()

  age = args[0]

  if age == 'all':

    age = -1

  else:

    age = ParseTimespec(age)

  (archived_count, jobs_left) = client.AutoArchiveJobs(age)

  ToStdout("Archived %s jobs, %s unchecked left", archived_count, jobs_left)

  return 0

def CancelJobs(opts, args):

  """Cancel not-yet-started jobs.

  @param opts: the command line options selected by the user

  @type args: list

  @param args: should contain the job IDs to be cancelled

  @rtype: int

  @return: the desired exit code

  """

  client = GetClient()

  result = constants.EXIT_SUCCESS

  for job_id in args:

    (success, msg) = client.CancelJob(job_id)

    if not success:

      result = constants.EXIT_FAILURE

    ToStdout(msg)

  return result

def ShowJobs(opts, args):

  """Show detailed information about jobs.

  @param opts: the command line options selected by the user

  @type args: list

  @param args: should contain the job IDs to be queried

  @rtype: int

  @return: the desired exit code

  """

  def format_msg(level, text):

    """Display the text indented."""

    ToStdout("%s%s", "  " * level, text)

  def result_helper(value):

    """Format a result field in a nice way."""

    if isinstance(value, (tuple, list)):

      return "[%s]" % utils.CommaJoin(value)

    else:

      return str(value)

  selected_fields = [

    "id", "status", "ops", "opresult", "opstatus", "oplog",

    "opstart", "opexec", "opend", "received_ts", "start_ts", "end_ts",

    ]

  result = GetClient().QueryJobs(args, selected_fields)

  first = True

  for idx, entry in enumerate(result):

    if not first:

      format_msg(0, "")

    else:

      first = False

    if entry is None:

      if idx <= len(args):

        format_msg(0, "Job ID %s not found" % args[idx])

      else:

        # this should not happen, when we don't pass args it will be a

        # valid job returned

        format_msg(0, "Job ID requested as argument %s not found" % (idx + 1))

      continue

    (job_id, status, ops, opresult, opstatus, oplog,

     opstart, opexec, opend, recv_ts, start_ts, end_ts) = entry

    format_msg(0, "Job ID: %s" % job_id)

    if status in _USER_JOB_STATUS:

      status = _USER_JOB_STATUS[status]

    else:

      raise errors.ProgrammerError("Unknown job status code '%s'" % status)

    format_msg(1, "Status: %s" % status)

    if recv_ts is not None:

      format_msg(1, "Received:         %s" % FormatTimestamp(recv_ts))

    else:

      format_msg(1, "Missing received timestamp (%s)" % str(recv_ts))

    if start_ts is not None:

      if recv_ts is not None:

        d1 = start_ts[0] - recv_ts[0] + (start_ts[1] - recv_ts[1]) / 1000000.0

        delta = " (delta %.6fs)" % d1

      else:

        delta = ""

      format_msg(1, "Processing start: %s%s" %

                 (FormatTimestamp(start_ts), delta))

    else:

      format_msg(1, "Processing start: unknown (%s)" % str(start_ts))

    if end_ts is not None:

      if start_ts is not None:

        d2 = end_ts[0] - start_ts[0] + (end_ts[1] - start_ts[1]) / 1000000.0

        delta = " (delta %.6fs)" % d2

      else:

        delta = ""

      format_msg(1, "Processing end:   %s%s" %

                 (FormatTimestamp(end_ts), delta))

    else:

      format_msg(1, "Processing end:   unknown (%s)" % str(end_ts))

    if end_ts is not None and recv_ts is not None:

      d3 = end_ts[0] - recv_ts[0] + (end_ts[1] - recv_ts[1]) / 1000000.0

      format_msg(1, "Total processing time: %.6f seconds" % d3)

    else:

      format_msg(1, "Total processing time: N/A")

    format_msg(1, "Opcodes:")

    for (opcode, result, status, log, s_ts, x_ts, e_ts) in \

            zip(ops, opresult, opstatus, oplog, opstart, opexec, opend):

      format_msg(2, "%s" % opcode["OP_ID"])

      format_msg(3, "Status: %s" % status)

      if isinstance(s_ts, (tuple, list)):

        format_msg(3, "Processing start: %s" % FormatTimestamp(s_ts))

      else:

        format_msg(3, "No processing start time")

      if isinstance(x_ts, (tuple, list)):

        format_msg(3, "Execution start:  %s" % FormatTimestamp(x_ts))

      else:

        format_msg(3, "No execution start time")

      if isinstance(e_ts, (tuple, list)):

        format_msg(3, "Processing end:   %s" % FormatTimestamp(e_ts))

      else:

        format_msg(3, "No processing end time")

      format_msg(3, "Input fields:")

      for key in utils.NiceSort(opcode.keys()):

        if key == "OP_ID":

          continue

        val = opcode[key]

        if isinstance(val, (tuple, list)):

          val = ",".join([str(item) for item in val])

        format_msg(4, "%s: %s" % (key, val))

      if result is None:

        format_msg(3, "No output data")

      elif isinstance(result, (tuple, list)):

        if not result:

          format_msg(3, "Result: empty sequence")

        else:

          format_msg(3, "Result:")

          for elem in result:

            format_msg(4, result_helper(elem))

      elif isinstance(result, dict):

        if not result:

          format_msg(3, "Result: empty dictionary")

        else:

          for key, val in result.iteritems():

            format_msg(4, "%s: %s" % (key, result_helper(val)))

      else:

        format_msg(3, "Result: %s" % result)

      format_msg(3, "Execution log:")

      for serial, log_ts, log_type, log_msg in log:

        time_txt = FormatTimestamp(log_ts)

        encoded = FormatLogMessage(log_type, log_msg)

        format_msg(4, "%s:%s:%s %s" % (serial, time_txt, log_type, encoded))

  return 0

def WatchJob(opts, args):

  """Follow a job and print its output as it arrives.

  @param opts: the command line options selected by the user

  @type args: list

  @param args: Contains the job ID

  @rtype: int

  @return: the desired exit code

  """

  job_id = args[0]

  msg = ("Output from job %s follows" % job_id)

  ToStdout(msg)

  ToStdout("-" * len(msg))

  retcode = 0

  try:

    cli.PollJob(job_id)

  except errors.GenericError, err:

    (retcode, job_result) = cli.FormatError(err)

    ToStderr("Job %s failed: %s", job_id, job_result)

  return retcode

commands = {

  'list': (

    ListJobs, [ArgJobId()],

    [NOHDR_OPT, SEP_OPT, FIELDS_OPT],

    "[job_id ...]",

    "List the jobs and their status. The available fields are"

    " (see the man page for details): id, status, op_list,"

    " op_status, op_result."

    " The default field"

    " list is (in order): %s." % utils.CommaJoin(_LIST_DEF_FIELDS)),

  'archive': (

    ArchiveJobs, [ArgJobId(min=1)], [],

    "<job-id> [<job-id> ...]", "Archive specified jobs"),

  'autoarchive': (

    AutoArchiveJobs,

    [ArgSuggest(min=1, max=1, choices=["1d", "1w", "4w", "all"])],

    [],

    "<age>", "Auto archive jobs older than the given age"),

  'cancel': (

    CancelJobs, [ArgJobId(min=1)], [],

    "<job-id> [<job-id> ...]", "Cancel specified jobs"),

  'info': (

    ShowJobs, [ArgJobId(min=1)], [],

    "<job-id> [<job-id> ...]",

    "Show detailed information about the specified jobs"),

  'watch': (

    WatchJob, [ArgJobId(min=1, max=1)], [],

    "<job-id>", "Follows a job and prints its output as it arrives"),

  }

if __name__ == '__main__':

  sys.exit(GenericMain(commands))