Class: TemporaryRedis

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

Constant Summary collapse

REDIS_TEMP_DIR =
"/tmp/discourse_temp_redis"
REDIS_LOG_PATH =
"#{REDIS_TEMP_DIR}/redis.log"
REDIS_PID_PATH =
"#{REDIS_TEMP_DIR}/redis.pid"

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initializeTemporaryRedis

Returns a new instance of TemporaryRedis.



10
11
12
# File 'lib/temporary_redis.rb', line 10

def initialize
  set_redis_server_bin
end

Instance Attribute Details

#instanceObject (readonly)

Returns the value of attribute instance.



8
9
10
# File 'lib/temporary_redis.rb', line 8

def instance
  @instance
end

Instance Method Details

#portObject



14
15
16
# File 'lib/temporary_redis.rb', line 14

def port
  @port ||= find_free_port(11_000..11_900)
end

#removeObject



75
76
77
78
79
80
81
82
83
84
# File 'lib/temporary_redis.rb', line 75

def remove
  if @instance
    @instance.shutdown
    @thread.join
    puts "Redis has been shutdown."
  end
  FileUtils.rm_rf(REDIS_TEMP_DIR)
  @started = false
  puts "Redis files have been cleaned up."
end

#startObject



18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
# File 'lib/temporary_redis.rb', line 18

def start
  return if @started
  FileUtils.rm_rf(REDIS_TEMP_DIR)
  Dir.mkdir(REDIS_TEMP_DIR)
  FileUtils.touch(REDIS_LOG_PATH)

  puts "Starting redis on port: #{port}"
  @thread =
    Thread.new do
      system(
        @redis_server_bin,
        "--port",
        port.to_s,
        "--pidfile",
        REDIS_PID_PATH,
        "--logfile",
        REDIS_LOG_PATH,
        "--databases",
        "1",
        "--save",
        '""',
        "--appendonly",
        "no",
        "--daemonize",
        "no",
        "--maxclients",
        "100",
        "--dir",
        REDIS_TEMP_DIR,
      )
    end

  puts "Waiting for redis server to start..."
  success = false
  instance = nil
  config = { port: port, host: "127.0.0.1", db: 0 }
  start = Time.now
  while !success
    begin
      instance = DiscourseRedis.new(config, namespace: true)
      success = instance.ping == "PONG"
    rescue Redis::CannotConnectError
    ensure
      if !success && (Time.now - start) >= 5
        STDERR.puts "ERROR: Could not connect to redis in 5 seconds."
        self.remove
        exit(1)
      elsif !success
        sleep 0.1
      end
    end
  end
  puts "Redis is ready"
  @instance = instance
  @started = true
end