Class: Lowkiq::Queue::Queue

Inherits:
Object
  • Object
show all
Defined in:
lib/lowkiq/queue/queue.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(redis_pool, name, shards_count) ⇒ Queue

Returns a new instance of Queue.



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# File 'lib/lowkiq/queue/queue.rb', line 6

def initialize(redis_pool, name, shards_count)
  @pool = redis_pool
  @name = name
  @shards_count = shards_count
  @timestamp = Utils::Timestamp.method(:now)
  @keys = Keys.new name
  @fetch = Fetch.new name
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/lowkiq/queue/queue.rb', line 4

def name
  @name
end

#pool ⇒ Object (readonly)

Returns the value of attribute pool.



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# File 'lib/lowkiq/queue/queue.rb', line 4

def pool
  @pool
end

Instance Method Details

#ack(shard, data, result = nil) ⇒ Object 



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# File 'lib/lowkiq/queue/queue.rb', line 103

def ack(shard, data, result = nil)
  ids = data.map { |job| job[:id] }
  length = ids.length

  @pool.with do |redis|
    redis.multi do
      redis.del @keys.processing_ids_with_perform_in_hash(shard)
      redis.del @keys.processing_ids_with_retry_count_hash(shard)
      redis.del @keys.processing_errors_hash(shard)
      ids.each do |id|
        redis.del @keys.processing_payloads_zset(id)
      end
      redis.hdel @keys.processing_length_by_shard_hash, shard
      redis.incrby @keys.processed_key, length if result == :success
      redis.incrby @keys.failed_key,    length if result == :fail
    end
  end
end

#delete(ids) ⇒ Object 



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# File 'lib/lowkiq/queue/queue.rb', line 170

def delete(ids)
  @pool.with do |redis|
    redis.multi do
      ids.each do |id|
        shard = id_to_shard id
        redis.zrem @keys.all_ids_lex_zset, id
        redis.zrem @keys.all_ids_scored_by_perform_in_zset, id
        redis.zrem @keys.all_ids_scored_by_retry_count_zset, id
        redis.zrem @keys.ids_scored_by_perform_in_zset(shard), id
        redis.del  @keys.payloads_zset(id)
        redis.hdel @keys.errors_hash, id
      end
    end
  end
end

#morgue_delete(ids) ⇒ Object 



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# File 'lib/lowkiq/queue/queue.rb', line 157

def morgue_delete(ids)
  @pool.with do |redis|
    redis.multi do
      ids.each do |id|
        redis.zrem @keys.morgue_all_ids_lex_zset, id
        redis.zrem @keys.morgue_all_ids_scored_by_updated_at_zset, id
        redis.del  @keys.morgue_payloads_zset(id)
        redis.hdel @keys.morgue_errors_hash, id
      end
    end
  end
end

#pop(shard, limit:) ⇒ Object 



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# File 'lib/lowkiq/queue/queue.rb', line 38

def pop(shard, limit:)
  @pool.with do |redis|
    ids = redis.zrangebyscore @keys.ids_scored_by_perform_in_zset(shard),
                              0, @timestamp.call,
                              limit: [0, limit]
    return [] if ids.empty?

    res = redis.multi do |redis|
      redis.hset @keys.processing_length_by_shard_hash, shard, ids.length

      ids.each do |id|
        redis.zrem @keys.all_ids_lex_zset, id
        redis.zrem @keys.ids_scored_by_perform_in_zset(shard), id

        Script.zremhset redis,
                        @keys.all_ids_scored_by_perform_in_zset,
                        @keys.processing_ids_with_perform_in_hash(shard),
                        id
        Script.zremhset redis,
                        @keys.all_ids_scored_by_retry_count_zset,
                        @keys.processing_ids_with_retry_count_hash(shard),
                        id
        redis.rename @keys.payloads_zset(id),
                     @keys.processing_payloads_zset(id)
        Script.hmove redis,
                     @keys.errors_hash,
                     @keys.processing_errors_hash(shard),
                     id
      end
      processing_data_pipeline(redis, shard, ids)
    end

    res.shift 1 + ids.length * 6
    processing_data_build res, ids
  end
end

#processing_data(shard) ⇒ Object 



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# File 'lib/lowkiq/queue/queue.rb', line 122

def processing_data(shard)
  @pool.with do |redis|
    ids = redis.hkeys @keys.processing_ids_with_perform_in_hash(shard)
    return [] if ids.empty?

    res = redis.multi do |redis|
      processing_data_pipeline redis, shard, ids
    end

    processing_data_build res, ids
  end
end

#push(batch) ⇒ Object 



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# File 'lib/lowkiq/queue/queue.rb', line 15

def push(batch)
  @pool.with do |redis|
    redis.multi do
      batch.each do |job|
        id          = job.fetch(:id)
        perform_in  = job.fetch(:perform_in, @timestamp.call)
        retry_count = job.fetch(:retry_count, -1) # for testing
        payload     = job.fetch(:payload, "")
        score       = job.fetch(:score, @timestamp.call)

        shard = id_to_shard id

        redis.zadd @keys.all_ids_lex_zset, 0, id
        redis.zadd @keys.all_ids_scored_by_perform_in_zset, perform_in, id, nx: true
        redis.zadd @keys.all_ids_scored_by_retry_count_zset, retry_count, id, nx: true

        redis.zadd @keys.ids_scored_by_perform_in_zset(shard), perform_in, id, nx: true
        redis.zadd @keys.payloads_zset(id), score, Lowkiq.dump_payload.call(payload), nx: true
      end
    end
  end
end

#push_back(batch) ⇒ Object 



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# File 'lib/lowkiq/queue/queue.rb', line 75

def push_back(batch)
  @pool.with do |redis|
    timestamp = @timestamp.call
    redis.multi do |redis|
      batch.each do |job|
        id          = job.fetch(:id)
        perform_in  = job.fetch(:perform_in, timestamp)
        retry_count = job.fetch(:retry_count, -1)
        payloads    = job.fetch(:payloads).map do |(payload, score)|
          [score, Lowkiq.dump_payload.call(payload)]
        end
        error       = job.fetch(:error, nil)

        shard = id_to_shard id

        redis.zadd @keys.all_ids_lex_zset, 0, id
        redis.zadd @keys.all_ids_scored_by_perform_in_zset, perform_in, id
        redis.zadd @keys.all_ids_scored_by_retry_count_zset, retry_count, id

        redis.zadd @keys.ids_scored_by_perform_in_zset(shard), perform_in, id
        redis.zadd @keys.payloads_zset(id), payloads, nx: true

        redis.hset @keys.errors_hash, id, error unless error.nil?
      end
    end
  end
end

#push_to_morgue(batch) ⇒ Object 



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# File 'lib/lowkiq/queue/queue.rb', line 135

def push_to_morgue(batch)
  @pool.with do |redis|
    timestamp = @timestamp.call
    redis.multi do
      batch.each do |job|
        id       = job.fetch(:id)
        payloads = job.fetch(:payloads).map do |(payload, score)|
          [score, Lowkiq.dump_payload.call(payload)]
        end
        error    = job.fetch(:error, nil)


        redis.zadd @keys.morgue_all_ids_lex_zset, 0, id
        redis.zadd @keys.morgue_all_ids_scored_by_updated_at_zset, timestamp, id
        redis.zadd @keys.morgue_payloads_zset(id), payloads, nx: true

        redis.hset @keys.morgue_errors_hash, id, error unless error.nil?
      end
    end
  end
end

#shards ⇒ Object 



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# File 'lib/lowkiq/queue/queue.rb', line 186

def shards
  (0...@shards_count)
end