class Solr::Cloud::CollectionsStateManager

Attributes

collections[R]
collections_state[R]
zookeeper[R]

Public Class Methods

new(zookeeper:, collections:) click to toggle source
# File lib/solr/cloud/collections_state_manager.rb, line 6
def initialize(zookeeper:, collections:)
  @zookeeper = zookeeper
  @collections = collections
  @collections_state = {}
  watch_solr_collections_state
end

Public Instance Methods

active_nodes_for(collection:) click to toggle source
# File lib/solr/cloud/collections_state_manager.rb, line 17
def active_nodes_for(collection:)
  shards = collections_state.dig(collection.to_s, 'shards')
  return unless shards
  shards.flat_map do |_, shard|
    shard['replicas'].select do |_, replica|
      replica['state'] == 'active'
    end.flat_map do |_, replica|
      replica['base_url']
    end
  end.uniq
end
leader_replica_node_for(collection:, shard:) click to toggle source
# File lib/solr/cloud/collections_state_manager.rb, line 29
def leader_replica_node_for(collection:, shard:)
  shards = collections_state.dig(collection.to_s, 'shards')
  return unless shards
  shard_replicas = shards[shard.to_s]
  leader_replica = shard_replicas['replicas'].detect do |_, replica|
    replica['state'] == 'active' && replica['leader'] == 'true'
  end
  leader_replica.last['base_url'] if leader_replica
end
shards_for(collection:) click to toggle source
# File lib/solr/cloud/collections_state_manager.rb, line 13
def shards_for(collection:)
  collections_state.dig(collection.to_s, 'shards').keys
end
watch_solr_collections_state() click to toggle source
# File lib/solr/cloud/collections_state_manager.rb, line 39
def watch_solr_collections_state
  collections.each do |collection_name|
    zookeeper.watch_collection_state(collection_name) do |state|
      @collections_state[collection_name.to_s] = state
    end
  end
end