Class: Aerospike::ScanPolicy

Inherits:
Policy
  • Object
show all
Defined in:
lib/aerospike/policy/scan_policy.rb

Overview

Container object for scan policy command.

Instance Attribute Summary collapse

Attributes inherited from Policy

#consistency_level, #fail_on_filtered_out, #filter_exp, #max_retries, #priority, #read_touch_ttl_percent, #replica, #sleep_between_retries, #timeout, #use_compression

Instance Method Summary collapse

Constructor Details

#initialize(opt = {}) ⇒ ScanPolicy

Returns a new instance of ScanPolicy.



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# File 'lib/aerospike/policy/scan_policy.rb', line 34

def initialize(opt={})
  super(opt)

  # Approximates the number of records to return to the client. This number is divided by the
  # number of nodes involved in the query. The actual number of records returned
  # may be less than MaxRecords if node record counts are small and unbalanced across
  # nodes.
  #
  # This field is supported on server versions >= 4.9.
  #
  # Default: 0 (do not limit record count)
  @max_records = opt.fetch(:max_records) { 0 }

  # Percent of data to scan. Valid integer range is 1 to 100.
  # Default is 100.
  @scan_percent = opt[:scan_percent] || 100

  # [:nodoc:]
  # DEPRECATED
  # The Aerospike server does not support this policy anymore
  # TODO: Remove for next major release
  @concurrent_nodes = opt.fetch(:concurrent_nodes) { true }

  # Indicates if bin data is retrieved. If false, only record digests (and
  # user keys if stored on the server) are retrieved.
  # Default is true.
  @include_bin_data = opt.fetch(:include_bin_data) { true }

  # [:nodoc:]
  # DEPRECATED
  # The Aerospike server does not support this policy anymore
  # TODO: Remove for next major release
  @fail_on_cluster_change = opt.fetch(:fail_on_cluster_change) { true }

  # Determines network timeout for each attempt.
  #
  # If socket_timeout is not zero and socket_timeout is reached before an attempt completes,
  # the Timeout above is checked. If Timeout is not exceeded, the transaction
  # is retried. If both socket_timeout and Timeout are non-zero, socket_timeout must be less
  # than or equal to Timeout, otherwise Timeout will also be used for socket_timeout.
  #
  # Default: 30s
  @socket_timeout = opt[:socket_timeout] || 30000

  # Number of records to place in queue before blocking. Records received
  # from multiple server nodes will be placed in a queue. A separate thread
  # consumes these records in parallel. If the queue is full, the producer
  # threads will block until records are consumed.
  # Default is 5000.
  @record_queue_size = opt[:record_queue_size] || 5000

  # Limit returned records per second (rps) rate for each server.
  # Will not apply rps limit if records_per_second is zero.
  # Currently only applicable to a query without a defined filter (scan).
  # Default is 0
  @records_per_second = opt[:records_per_second] || 0

  self
end

Instance Attribute Details

#concurrent_nodes ⇒ Object

Returns the value of attribute concurrent_nodes.



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# File 'lib/aerospike/policy/scan_policy.rb', line 27

def concurrent_nodes
  @concurrent_nodes
end

#fail_on_cluster_change ⇒ Object

Returns the value of attribute fail_on_cluster_change.



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# File 'lib/aerospike/policy/scan_policy.rb', line 29

def fail_on_cluster_change
  @fail_on_cluster_change
end

#include_bin_data ⇒ Object

Returns the value of attribute include_bin_data.



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# File 'lib/aerospike/policy/scan_policy.rb', line 28

def include_bin_data
  @include_bin_data
end

#max_records ⇒ Object

Returns the value of attribute max_records.



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# File 'lib/aerospike/policy/scan_policy.rb', line 25

def max_records
  @max_records
end

#record_queue_size ⇒ Object

Returns the value of attribute record_queue_size.



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# File 'lib/aerospike/policy/scan_policy.rb', line 31

def record_queue_size
  @record_queue_size
end

#records_per_second ⇒ Object

Returns the value of attribute records_per_second.



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# File 'lib/aerospike/policy/scan_policy.rb', line 32

def records_per_second
  @records_per_second
end

#scan_percent ⇒ Object

Returns the value of attribute scan_percent.



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# File 'lib/aerospike/policy/scan_policy.rb', line 26

def scan_percent
  @scan_percent
end

#socket_timeout ⇒ Object

Returns the value of attribute socket_timeout.



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# File 'lib/aerospike/policy/scan_policy.rb', line 30

def socket_timeout
  @socket_timeout
end