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#

#

# Copyright (C) 2006, 2007, 2012 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.

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# 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=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

from ganeti.cli import *

from ganeti import constants

from ganeti import errors

from ganeti import utils

from ganeti import cli

from ganeti import qlang

#: 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_WAITING: "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 _FormatStatus(value):

  """Formats a job status.

  """

  try:

    return _USER_JOB_STATUS[value]

  except KeyError:

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

def _ParseJobIds(args):

  """Parses a list of string job IDs into integers.

  @param args: list of strings

  @return: list of integers

  @raise OpPrereqError: in case of invalid values

  """

  try:

    return [int(a) for a in args]

  except (ValueError, TypeError), err:

    raise errors.OpPrereqError("Invalid job ID passed: %s" % err,

                               errors.ECODE_INVAL)

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)

  fmtoverride = {

    "status": (_FormatStatus, False),

    "summary": (lambda value: ",".join(str(item) for item in value), False),

    }

  fmtoverride.update(dict.fromkeys(["opstart", "opexec", "opend"],

    (lambda value: map(FormatTimestamp, value), None)))

  qfilter = qlang.MakeSimpleFilter("status", opts.status_filter)

  return GenericList(constants.QR_JOB, selected_fields, args, None,

                     opts.separator, not opts.no_headers,

                     format_override=fmtoverride, verbose=opts.verbose,

                     force_filter=opts.force_filter, namefield="id",

                     qfilter=qfilter, isnumeric=True)

def ListJobFields(opts, args):

  """List job fields.

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

  @type args: list

  @param args: fields to list, or empty for all

  @rtype: int

  @return: the desired exit code

  """

  return GenericListFields(constants.QR_JOB, args, opts.separator,

                           not opts.no_headers)

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",

    ]

  qfilter = qlang.MakeSimpleFilter("id", _ParseJobIds(args))

  result = GetClient().Query(constants.QR_JOB, selected_fields, qfilter).data

  first = True

  for entry in result:

    if not first:

      format_msg(0, "")

    else:

      first = False

    ((_, job_id), (rs_status, status), (_, ops), (_, opresult), (_, opstatus),

     (_, oplog), (_, opstart), (_, opexec), (_, opend), (_, recv_ts),

     (_, start_ts), (_, end_ts)) = entry

    # Detect non-normal results

    if rs_status != constants.RS_NORMAL:

      format_msg(0, "Job ID %s not found" % job_id)

      continue

    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:

          format_msg(3, "Result:")

          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

_PENDING_OPT = \

  cli_option("--pending", default=None,

             action="store_const", dest="status_filter",

             const=frozenset([

               constants.JOB_STATUS_QUEUED,

               constants.JOB_STATUS_WAITING,

               ]),

             help="Show only jobs pending execution")

_RUNNING_OPT = \

  cli_option("--running", default=None,

             action="store_const", dest="status_filter",

             const=frozenset([

               constants.JOB_STATUS_RUNNING,

               ]),

             help="Show jobs currently running only")

_ERROR_OPT = \

  cli_option("--error", default=None,

             action="store_const", dest="status_filter",

             const=frozenset([

               constants.JOB_STATUS_ERROR,

               ]),

             help="Show failed jobs only")

_FINISHED_OPT = \

  cli_option("--finished", default=None,

             action="store_const", dest="status_filter",

             const=constants.JOBS_FINALIZED,

             help="Show finished jobs only")

commands = {

  "list": (

    ListJobs, [ArgJobId()],

    [NOHDR_OPT, SEP_OPT, FIELDS_OPT, VERBOSE_OPT, FORCE_FILTER_OPT,

     _PENDING_OPT, _RUNNING_OPT, _ERROR_OPT, _FINISHED_OPT],

    "[job_id ...]",

    "Lists the jobs and their status. The available fields can be shown"

    " using the \"list-fields\" command (see the man page for details)."

    " The default field list is (in order): %s." %

    utils.CommaJoin(_LIST_DEF_FIELDS)),

  "list-fields": (

    ListJobFields, [ArgUnknown()],

    [NOHDR_OPT, SEP_OPT],

    "[fields...]",

    "Lists all available fields for jobs"),

  "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"),

  }

#: dictionary with aliases for commands

aliases = {

  "show": "info",

  }

def Main():

  return GenericMain(commands, aliases=aliases)