Object Classes
**************

* IndexList

* SnapshotList


IndexList
=========

class curator.indexlist.IndexList(client)

   all_indices = None

      Instance variable. All indices in the cluster at instance
      creation time. **Type:** "list()"

   client = None

      An Elasticsearch Client object Also accessible as an instance
      variable.

   empty_list_check()

      Raise exception if *indices* is empty

   filter_allocated(key=None, value=None, allocation_type='require', exclude=True)

      Match indices that have the routing allocation rule of
      *key=value* from *indices*

      Parameters:
         * **key** -- The allocation attribute to check for

         * **value** -- The value to check for

         * **allocation_type** -- Type of allocation to apply

         * **exclude** -- If *exclude* is *True*, this filter will
           remove matching indices from *indices*. If *exclude* is
           *False*, then only matching indices will be kept in
           *indices*. Default is *True*

   filter_by_age(source='name', direction=None, timestring=None, unit=None, unit_count=None, field=None, stats_result='min_value', epoch=None, exclude=False, unit_count_pattern=False)

      Match *indices* by relative age calculations.

      Parameters:
         * **source** -- Source of index age. Can be one of 'name',
           'creation_date', or 'field_stats'

         * **direction** -- Time to filter, either "older" or
           "younger"

         * **timestring** -- An strftime string to match the
           datestamp in an index name. Only used for index filtering
           by "name".

         * **unit** -- One of "seconds", "minutes", "hours", "days",
           "weeks", "months", or "years".

         * **unit_count** -- The number of "unit" (s). "unit_count"
           * "unit" will be calculated out to the relative number of
           seconds.

         * **unit_count_pattern** -- A regular expression whose
           capture group identifies the value for "unit_count".

         * **field** -- A timestamp field name.  Only used for
           "field_stats" based calculations.

         * **stats_result** -- Either *min_value* or *max_value*.
           Only used in conjunction with *source`=``field_stats`* to
           choose whether to reference the minimum or maximum result
           value.

         * **epoch** -- An epoch timestamp used in conjunction with
           "unit" and "unit_count" to establish a point of reference
           for calculations. If not provided, the current time will be
           used.

         * **exclude** -- If *exclude* is *True*, this filter will
           remove matching indices from *indices*. If *exclude* is
           *False*, then only matching indices will be kept in
           *indices*. Default is *False*

   filter_by_alias(aliases=None, exclude=False)

      Match indices which are associated with the alias or list of
      aliases identified by *aliases*.

      An update to Elasticsearch 5.5.0 changes the behavior of this
      from previous 5.x versions:
      https://www.elastic.co/guide/en/elasticsearch/reference/5.5
      /breaking-changes-5.5.html#breaking_55_rest_changes

      What this means is that indices must appear in all aliases in
      list *aliases* or a 404 error will result, leading to no indices
      being matched.  In older versions, if the index was associated
      with even one of the aliases in *aliases*, it would result in a
      match.

      It is unknown if this behavior affects anyone.  At the time this
      was written, no users have been bit by this.  The code could be
      adapted to manually loop if the previous behavior is desired.
      But if no users complain, this will become the accepted/expected
      behavior.

      Parameters:
         * **aliases** (*list*) -- A list of alias names.

         * **exclude** -- If *exclude* is *True*, this filter will
           remove matching indices from *indices*. If *exclude* is
           *False*, then only matching indices will be kept in
           *indices*. Default is *False*

   filter_by_count(count=None, reverse=True, use_age=False, pattern=None, source='creation_date', timestring=None, field=None, stats_result='min_value', exclude=True)

      Remove indices from the actionable list beyond the number
      *count*, sorted reverse-alphabetically by default.  If you set
      *reverse* to *False*, it will be sorted alphabetically.

      The default is usually what you will want. If only one kind of
      index is provided--for example, indices matching
      "logstash-%Y.%m.%d"--then reverse alphabetical sorting will mean
      the oldest will remain in the list, because lower numbers in the
      dates mean older indices.

      By setting *reverse* to *False*, then "index3" will be deleted
      before "index2", which will be deleted before "index1"

      *use_age* allows ordering indices by age. Age is determined by
      the index creation date by default, but you can specify an
      *source* of "name", "max_value", or "min_value".  The "name"
      *source* requires the timestring argument.

      Parameters:
         * **count** -- Filter indices beyond *count*.

         * **reverse** -- The filtering direction. (default:
           *True*).

         * **use_age** -- Sort indices by age.  "source" is required
           in this case.

         * **pattern** -- Select indices to count from a regular
           expression pattern.  This pattern must have one and only
           one capture group. This can allow a single "count" filter
           instance to operate against any number of matching
           patterns, and keep "count" of each index in that group. For
           example, given a "pattern" of "'^(.*)-\d{6}$'", it will
           match both "rollover-000001" and "index-999990", but not
           "logstash-2017.10.12".  Following the same example, if my
           cluster also had "rollover-000002" through
           "rollover-000010" and "index-888888" through
           "index-999999", it will process both groups of indices, and
           include or exclude the "count" of each.

         * **source** -- Source of index age. Can be one of "name",
           "creation_date", or "field_stats". Default: "creation_date"

         * **timestring** -- An strftime string to match the
           datestamp in an index name. Only used if *source* "name" is
           selected.

         * **field** -- A timestamp field name.  Only used if
           *source* "field_stats" is selected.

         * **stats_result** -- Either *min_value* or *max_value*.
           Only used if *source* "field_stats" is selected. It
           determines whether to reference the minimum or maximum
           value of *field* in each index.

         * **exclude** -- If *exclude* is *True*, this filter will
           remove matching indices from *indices*. If *exclude* is
           *False*, then only matching indices will be kept in
           *indices*. Default is *True*

   filter_by_regex(kind=None, value=None, exclude=False)

      Match indices by regular expression (pattern).

      Parameters:
         * **kind** -- Can be one of: "suffix", "prefix", "regex",
           or "timestring". This option defines what kind of filter
           you will be building.

         * **value** -- Depends on *kind*. It is the strftime string
           if *kind* is "timestring". It's used to build the regular
           expression for other kinds.

         * **exclude** -- If *exclude* is *True*, this filter will
           remove matching indices from *indices*. If *exclude* is
           *False*, then only matching indices will be kept in
           *indices*. Default is *False*

   filter_by_shards(number_of_shards=None, shard_filter_behavior='greater_than', exclude=False)

      Match *indices* with a given shard count.

      Selects all indices with a shard count 'greater_than'
      number_of_shards by default. Use shard_filter_behavior to select
      indices with shard count 'greater_than',
      'greater_than_or_equal',  'less_than', 'less_than_or_equal', or
      'equal' to number_of_shards.

      Parameters:
         * **number_of_shards** -- shard threshold

         * **shard_filter_behavior** -- Do you want to filter on
           greater_than, greater_than_or_equal, less_than,
           less_than_or_equal, or equal?

         * **exclude** -- If *exclude* is *True*, this filter will
           remove matching indices from *indices*. If *exclude* is
           *False*, then only matching indices will be kept in
           *indices*. Default is *False*

   filter_by_space(disk_space=None, reverse=True, use_age=False, source='creation_date', timestring=None, field=None, stats_result='min_value', exclude=False, threshold_behavior='greater_than')

      Remove indices from the actionable list based on space consumed,
      sorted reverse-alphabetically by default.  If you set *reverse*
      to *False*, it will be sorted alphabetically.

      The default is usually what you will want. If only one kind of
      index is provided--for example, indices matching
      "logstash-%Y.%m.%d"--then reverse alphabetical sorting will mean
      the oldest will remain in the list, because lower numbers in the
      dates mean older indices.

      By setting *reverse* to *False*, then "index3" will be deleted
      before "index2", which will be deleted before "index1"

      *use_age* allows ordering indices by age. Age is determined by
      the index creation date by default, but you can specify an
      *source* of "name", "max_value", or "min_value".  The "name"
      *source* requires the timestring argument.

      *threshold_behavior*, when set to *greater_than* (default),
      includes if it the index tests to be larger than *disk_space*.
      When set to *less_than*, it includes if the index is smaller
      than *disk_space*

      Parameters:
         * **disk_space** -- Filter indices over *n* gigabytes

         * **threshold_behavior** -- Size to filter, either
           "greater_than" or "less_than". Defaults to "greater_than"
           to preserve backwards compatability.

         * **reverse** -- The filtering direction. (default:
           *True*). Ignored if *use_age* is *True*

         * **use_age** -- Sort indices by age.  "source" is required
           in this case.

         * **source** -- Source of index age. Can be one of "name",
           "creation_date", or "field_stats". Default: "creation_date"

         * **timestring** -- An strftime string to match the
           datestamp in an index name. Only used if *source* "name" is
           selected.

         * **field** -- A timestamp field name.  Only used if
           *source* "field_stats" is selected.

         * **stats_result** -- Either *min_value* or *max_value*.
           Only used if *source* "field_stats" is selected. It
           determines whether to reference the minimum or maximum
           value of *field* in each index.

         * **exclude** -- If *exclude* is *True*, this filter will
           remove matching indices from *indices*. If *exclude* is
           *False*, then only matching indices will be kept in
           *indices*. Default is *False*

   filter_closed(exclude=True)

      Filter out closed indices from *indices*

      Parameters:
         **exclude** -- If *exclude* is *True*, this filter will
         remove matching indices from *indices*. If *exclude* is
         *False*, then only matching indices will be kept in
         *indices*. Default is *True*

   filter_empty(exclude=True)

      Filter indices with a document count of zero

      Parameters:
         **exclude** -- If *exclude* is *True*, this filter will
         remove matching indices from *indices*. If *exclude* is
         *False*, then only matching indices will be kept in
         *indices*. Default is *True*

   filter_forceMerged(max_num_segments=None, exclude=True)

      Match any index which has *max_num_segments* per shard or fewer
      in the actionable list.

      Parameters:
         * **max_num_segments** -- Cutoff number of segments per
           shard.

         * **exclude** -- If *exclude* is *True*, this filter will
           remove matching indices from *indices*. If *exclude* is
           *False*, then only matching indices will be kept in
           *indices*. Default is *True*

   filter_ilm(exclude=True)

      Match indices that have the setting *index.lifecycle.name*

      Parameters:
         **exclude** -- If *exclude* is *True*, this filter will
         remove matching indices from *indices*. If *exclude* is
         *False*, then only matching indices will be kept in
         *indices*. Default is *True*

   filter_kibana(exclude=True)

      Match any index named ".kibana", ".kibana-5", or ".kibana-6" in
      *indices*. Older releases addressed index names that no longer
      exist.

      Parameters:
         **exclude** -- If *exclude* is *True*, this filter will
         remove matching indices from *indices*. If *exclude* is
         *False*, then only matching indices will be kept in
         *indices*. Default is *True*

   filter_opened(exclude=True)

      Filter out opened indices from *indices*

      Parameters:
         **exclude** -- If *exclude* is *True*, this filter will
         remove matching indices from *indices*. If *exclude* is
         *False*, then only matching indices will be kept in
         *indices*. Default is *True*

   filter_period(period_type='relative', source='name', range_from=None, range_to=None, date_from=None, date_to=None, date_from_format=None, date_to_format=None, timestring=None, unit=None, field=None, stats_result='min_value', intersect=False, week_starts_on='sunday', epoch=None, exclude=False)

      Match *indices* with ages within a given period.

      Parameters:
         * **period_type** -- Can be either "absolute" or
           "relative". Default is "relative".  "date_from" and
           "date_to" are required when using "period_type='absolute'".
           "range_from" and "range_to" are required with
           "period_type='relative'".

         * **source** -- Source of index age. Can be one of 'name',
           'creation_date', or 'field_stats'

         * **range_from** -- How many "unit" (s) in the past/future
           is the origin?

         * **range_to** -- How many "unit" (s) in the past/future is
           the end point?

         * **date_from** -- The simplified date for the start of the
           range

         * **date_to** -- The simplified date for the end of the
           range.  If this value is the same as "date_from", the full
           value of "unit" will be extrapolated for the range.  For
           example, if "unit" is "months", and "date_from" and
           "date_to" are both "2017.01", then the entire month of
           January 2017 will be the absolute date range.

         * **date_from_format** -- The strftime string used to parse
           "date_from"

         * **date_to_format** -- The strftime string used to parse
           "date_to"

         * **timestring** -- An strftime string to match the
           datestamp in an index name. Only used for index filtering
           by "name".

         * **unit** -- One of "hours", "days", "weeks", "months", or
           "years".

         * **field** -- A timestamp field name.  Only used for
           "field_stats" based calculations.

         * **stats_result** -- Either *min_value* or *max_value*.
           Only used in conjunction with "source='field_stats'" to
           choose whether to reference the minimum or maximum result
           value.

         * **intersect** -- Only used when "source='field_stats'".
           If *True*, only indices where both *min_value* and
           *max_value* are within the period will be selected. If
           *False*, it will use whichever you specified.  Default is
           *False* to preserve expected behavior.

         * **week_starts_on** -- Either "sunday" or "monday".
           Default is "sunday"

         * **epoch** -- An epoch timestamp used to establish a point
           of reference for calculations. If not provided, the current
           time will be used.

         * **exclude** -- If *exclude* is *True*, this filter will
           remove matching indices from *indices*. If *exclude* is
           *False*, then only matching indices will be kept in
           *indices*. Default is *False*

   index_info = None

      Instance variable. Information extracted from indices, such as
      segment count, age, etc. Populated at instance creation time,
      and by other private helper methods, as needed. **Type:**
      "dict()"

   indices = None

      Instance variable. The running list of indices which will be
      used by an Action class. Populated at instance creation time.
      **Type:** "list()"

   iterate_filters(filter_dict)

      Iterate over the filters defined in *config* and execute them.

      Parameters:
         **filter_dict** -- The configuration dictionary

      Note: *filter_dict* should be a dictionary with the following
        form:

         { 'filters' : [
                 {
                     'filtertype': 'the_filter_type',
                     'key1' : 'value1',
                     ...
                     'keyN' : 'valueN'
                 }
             ]
         }

   working_list()

      Return the current value of *indices* as copy-by-value to
      prevent list stomping during iterations


SnapshotList
============

class curator.snapshotlist.SnapshotList(client, repository=None)

   client = None

      An Elasticsearch Client object. Also accessible as an instance
      variable.

   empty_list_check()

      Raise exception if *snapshots* is empty

   filter_by_age(source='creation_date', direction=None, timestring=None, unit=None, unit_count=None, epoch=None, exclude=False)

      Remove snapshots from *snapshots* by relative age calculations.

      Parameters:
         * **source** -- Source of snapshot age. Can be 'name', or
           'creation_date'.

         * **direction** -- Time to filter, either "older" or
           "younger"

         * **timestring** -- An strftime string to match the
           datestamp in an snapshot name. Only used for snapshot
           filtering by "name".

         * **unit** -- One of "seconds", "minutes", "hours", "days",
           "weeks", "months", or "years".

         * **unit_count** -- The number of "unit" (s). "unit_count"
           * "unit" will be calculated out to the relative number of
           seconds.

         * **epoch** -- An epoch timestamp used in conjunction with
           "unit" and "unit_count" to establish a point of reference
           for calculations. If not provided, the current time will be
           used.

         * **exclude** -- If *exclude* is *True*, this filter will
           remove matching snapshots from *snapshots*. If *exclude* is
           *False*, then only matching snapshots will be kept in
           *snapshots*. Default is *False*

   filter_by_count(count=None, reverse=True, use_age=False, source='creation_date', timestring=None, exclude=True)

      Remove snapshots from the actionable list beyond the number
      *count*, sorted reverse-alphabetically by default.  If you set
      *reverse* to *False*, it will be sorted alphabetically.

      The default is usually what you will want. If only one kind of
      snapshot is provided--for example, snapshots matching
      "curator-%Y%m%d%H%M%S"-- then reverse alphabetical sorting will
      mean the oldest will remain in the list, because lower numbers
      in the dates mean older snapshots.

      By setting *reverse* to *False*, then "snapshot3" will be acted
      on before "snapshot2", which will be acted on before "snapshot1"

      *use_age* allows ordering snapshots by age. Age is determined by
      the snapshot creation date (as identified by
      "start_time_in_millis") by default, but you can also specify a
      *source* of "name".  The "name" *source* requires the timestring
      argument.

      Parameters:
         * **count** -- Filter snapshots beyond *count*.

         * **reverse** -- The filtering direction. (default:
           *True*).

         * **use_age** -- Sort snapshots by age.  "source" is
           required in this case.

         * **source** -- Source of snapshot age. Can be one of
           "name", or "creation_date". Default: "creation_date"

         * **timestring** -- An strftime string to match the
           datestamp in a snapshot name. Only used if *source* "name"
           is selected.

         * **exclude** -- If *exclude* is *True*, this filter will
           remove matching snapshots from *snapshots*. If *exclude* is
           *False*, then only matching snapshots will be kept in
           *snapshots*. Default is *True*

   filter_by_regex(kind=None, value=None, exclude=False)

      Filter out snapshots not matching the pattern, or in the case of
      exclude, filter those matching the pattern.

      Parameters:
         * **kind** -- Can be one of: "suffix", "prefix", "regex",
           or "timestring". This option defines what kind of filter
           you will be building.

         * **value** -- Depends on *kind*. It is the strftime string
           if *kind* is *timestring*. It's used to build the regular
           expression for other kinds.

         * **exclude** -- If *exclude* is *True*, this filter will
           remove matching snapshots from *snapshots*. If *exclude* is
           *False*, then only matching snapshots will be kept in
           *snapshots*. Default is *False*

   filter_by_state(state=None, exclude=False)

      Filter out snapshots not matching "state", or in the case of
      exclude, filter those matching "state".

      Parameters:
         * **state** -- The snapshot state to filter for. Must be
           one of "SUCCESS", "PARTIAL", "FAILED", or "IN_PROGRESS".

         * **exclude** -- If *exclude* is *True*, this filter will
           remove matching snapshots from *snapshots*. If *exclude* is
           *False*, then only matching snapshots will be kept in
           *snapshots*. Default is *False*

   filter_period(period_type='relative', source='name', range_from=None, range_to=None, date_from=None, date_to=None, date_from_format=None, date_to_format=None, timestring=None, unit=None, week_starts_on='sunday', epoch=None, exclude=False)

      Match *snapshots* with ages within a given period.

      Parameters:
         * **period_type** -- Can be either "absolute" or
           "relative". Default is "relative".  "date_from" and
           "date_to" are required when using "period_type='absolute'`.
           ``range_from" and "range_to" are required with
           >>``<<period_type='relative'>>`<<.

         * **source** -- Source of snapshot age. Can be 'name', or
           'creation_date'.

         * **range_from** -- How many "unit" (s) in the past/future
           is the origin?

         * **range_to** -- How many "unit" (s) in the past/future is
           the end point?

         * **date_from** -- The simplified date for the start of the
           range

         * **date_to** -- The simplified date for the end of the
           range.  If this value is the same as "date_from", the full
           value of "unit" will be extrapolated for the range.  For
           example, if "unit" is "months", and "date_from" and
           "date_to" are both "2017.01", then the entire month of
           January 2017 will be the absolute date range.

         * **date_from_format** -- The strftime string used to parse
           "date_from"

         * **date_to_format** -- The strftime string used to parse
           "date_to"

         * **timestring** -- An strftime string to match the
           datestamp in an snapshot name. Only used for snapshot
           filtering by "name".

         * **unit** -- One of "hours", "days", "weeks", "months", or
           "years".

         * **week_starts_on** -- Either "sunday" or "monday".
           Default is "sunday"

         * **epoch** -- An epoch timestamp used to establish a point
           of reference for calculations. If not provided, the current
           time will be used.

         * **exclude** -- If *exclude* is *True*, this filter will
           remove matching indices from *indices*. If *exclude* is
           *False*, then only matching indices will be kept in
           *indices*. Default is *False*

   iterate_filters(config)

      Iterate over the filters defined in *config* and execute them.

      Parameters:
         **config** -- A dictionary of filters, as extracted from the
         YAML configuration file.

      Note: *config* should be a dictionary with the following form:

         { 'filters' : [
                 {
                     'filtertype': 'the_filter_type',
                     'key1' : 'value1',
                     ...
                     'keyN' : 'valueN'
                 }
             ]
         }

   most_recent()

      Return the most recent snapshot based on *start_time_in_millis*.

   repository = None

      An Elasticsearch repository. Also accessible as an instance
      variable.

   snapshot_info = None

      Instance variable. Information extracted from snapshots, such as
      age, etc. Populated by internal method *__get_snapshots* at
      instance creation time. **Type:** "dict()"

   snapshots = None

      Instance variable. The running list of snapshots which will be
      used by an Action class. Populated by internal methods
      *__get_snapshots* at instance creation time. **Type:** "list()"

   working_list()

      Return the current value of *snapshots* as copy-by-value to
      prevent list stomping during iterations
