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# frozen_string_literal: true
require_relative '../helper'
describe 'Pipelined Get' do
MemcachedManager.supported_protocols.each do |p|
describe "using the #{p} protocol" do
it 'supports pipelined get' do
memcached_persistent(p) do |dc|
dc.close
dc.flush
resp = dc.get_multi(%w[a b c d e f])
assert_empty(resp)
dc.set('a', 'foo')
dc.set('b', 123)
dc.set('c', %w[a b c])
# Invocation without block
resp = dc.get_multi(%w[a b c d e f])
expected_resp = { 'a' => 'foo', 'b' => 123, 'c' => %w[a b c] }
assert_equal(expected_resp, resp)
# Invocation with block
dc.get_multi(%w[a b c d e f]) do |k, v|
assert(expected_resp.key?(k) && expected_resp[k] == v)
expected_resp.delete(k)
end
assert_empty expected_resp
# Perform a big quiet set with 1000 elements.
arr = []
dc.multi do
1000.times do |idx|
dc.set idx, idx
arr << idx
end
end
# Retrieve the elements with a pipelined get
result = dc.get_multi(arr)
assert_equal(1000, result.size)
assert_equal(50, result['50'])
end
end
it 'supports pipelined get with keys containing Unicode or spaces' do
memcached_persistent(p) do |dc|
dc.close
dc.flush
keys_to_query = ['a', 'b', 'contains space', 'ƒ©åÍÎ']
resp = dc.get_multi(keys_to_query)
assert_empty(resp)
dc.set('a', 'foo')
dc.set('contains space', 123)
dc.set('ƒ©åÍÎ', %w[a b c])
# Invocation without block
resp = dc.get_multi(keys_to_query)
expected_resp = { 'a' => 'foo', 'contains space' => 123, 'ƒ©åÍÎ' => %w[a b c] }
assert_equal(expected_resp, resp)
# Invocation with block
dc.get_multi(keys_to_query) do |k, v|
assert(expected_resp.key?(k) && expected_resp[k] == v)
expected_resp.delete(k)
end
assert_empty expected_resp
end
end
describe 'pipeline_next_responses' do
it 'raises NetworkError when called before pipeline_response_setup' do
memcached_persistent(p) do |dc|
server = dc.send(:ring).servers.first
server.request(:pipelined_get, %w[a b])
assert_raises Dalli::NetworkError do
server.pipeline_next_responses
end
end
end
it 'raises NetworkError when called after pipeline_abort' do
memcached_persistent(p) do |dc|
server = dc.send(:ring).servers.first
server.request(:pipelined_get, %w[a b])
server.pipeline_response_setup
server.pipeline_abort
assert_raises Dalli::NetworkError do
server.pipeline_next_responses
end
end
end
end
describe 'single-server get_multi fast path' do
it 'returns correct results via the fast path' do
memcached_persistent(p) do |dc|
dc.flush
dc.set('a', 'foo')
dc.set('b', 123)
dc.set('c', %w[a b c])
resp = dc.get_multi(%w[a b c d e f])
expected = { 'a' => 'foo', 'b' => 123, 'c' => %w[a b c] }
assert_equal(expected, resp)
end
end
it 'returns correct results with raw mode' do
memcached_persistent(p, 21_345, '', raw: true) do |dc|
dc.flush
dc.set('x', 'hello')
dc.set('y', 'world')
resp = dc.get_multi(%w[x y z])
assert_equal({ 'x' => 'hello', 'y' => 'world' }, resp)
end
end
it 'returns correct results with namespace' do
memcached_persistent(p, 21_345, '', namespace: 'ns') do |dc|
dc.flush
dc.set('a', 'val_a')
dc.set('b', 'val_b')
resp = dc.get_multi(%w[a b c])
assert_equal({ 'a' => 'val_a', 'b' => 'val_b' }, resp)
end
end
it 'handles all misses' do
memcached_persistent(p) do |dc|
dc.flush
resp = dc.get_multi(%w[miss1 miss2 miss3])
assert_empty(resp)
end
end
it 'handles Unicode and space keys via fast path' do
memcached_persistent(p) do |dc|
dc.flush
dc.set('contains space', 'space_val')
dc.set('ƒ©åÍÎ', 'unicode_val')
resp = dc.get_multi(['contains space', 'ƒ©åÍÎ', 'missing'])
assert_equal({ 'contains space' => 'space_val', 'ƒ©åÍÎ' => 'unicode_val' }, resp)
end
end
it 'still uses block-based get_multi via PipelinedGetter' do
memcached_persistent(p) do |dc|
dc.flush
dc.set('a', 'foo')
dc.set('b', 'bar')
collected = {}
dc.get_multi(%w[a b c]) { |k, v| collected[k] = v }
assert_equal({ 'a' => 'foo', 'b' => 'bar' }, collected)
end
end
end
describe 'pipelined_get_interleaved' do
it 'works with chunked requests' do
memcached_persistent(p) do |dc|
dc.flush
# Set some keys
10.times { |i| dc.set("key#{i}", "value#{i}") }
# Use get_multi with a lower interleave threshold to test the interleaved path
# We'll temporarily modify the threshold constant
original_threshold = Dalli::PipelinedGetter::INTERLEAVE_THRESHOLD
original_chunk = Dalli::PipelinedGetter::CHUNK_SIZE
begin
Dalli::PipelinedGetter.send(:remove_const, :INTERLEAVE_THRESHOLD)
Dalli::PipelinedGetter.send(:remove_const, :CHUNK_SIZE)
Dalli::PipelinedGetter.const_set(:INTERLEAVE_THRESHOLD, 3)
Dalli::PipelinedGetter.const_set(:CHUNK_SIZE, 3)
# Now get_multi should use interleaved mode for 10 keys
keys = Array.new(10) { |i| "key#{i}" }
result = dc.get_multi(keys)
# Verify we got all keys back
assert_equal 10, result.size
10.times do |i|
assert_equal "value#{i}", result["key#{i}"]
end
ensure
Dalli::PipelinedGetter.send(:remove_const, :INTERLEAVE_THRESHOLD)
Dalli::PipelinedGetter.send(:remove_const, :CHUNK_SIZE)
Dalli::PipelinedGetter.const_set(:INTERLEAVE_THRESHOLD, original_threshold)
Dalli::PipelinedGetter.const_set(:CHUNK_SIZE, original_chunk)
end
end
end
end
end
end
end
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