Glint

23f4d5d797a91b6d17d627b90b5a42d9?s=47 Kentaro Kuribayashi
June 07, 2013
Technology
2
3.2k

 Glint

RedDotRubyConf 2013
http://www.reddotrubyconf.com/

23f4d5d797a91b6d17d627b90b5a42d9?s=128

Kentaro Kuribayashi

June 07, 2013
Tweet

More Decks by Kentaro Kuribayashi

See All by Kentaro Kuribayashi
23f4d5d797a91b6d17d627b90b5a42d9?s=48 kentaro
0
270
23f4d5d797a91b6d17d627b90b5a42d9?s=48 kentaro
3
1.2k
23f4d5d797a91b6d17d627b90b5a42d9?s=48 kentaro
3
450
23f4d5d797a91b6d17d627b90b5a42d9?s=48 kentaro
0
10k
23f4d5d797a91b6d17d627b90b5a42d9?s=48 kentaro
1
170
23f4d5d797a91b6d17d627b90b5a42d9?s=48 kentaro
1
880
23f4d5d797a91b6d17d627b90b5a42d9?s=48 kentaro
0
140
23f4d5d797a91b6d17d627b90b5a42d9?s=48 kentaro
0
240
23f4d5d797a91b6d17d627b90b5a42d9?s=48 kentaro
1
1.3k

Other Decks in Technology

See All in Technology
2c58367194cdc9bb97f8e0fd5b20b511?s=48 kenthamaguchi
2
110
De266761b955b2636e454a1bc7a99ed4?s=48 masayaaoyama
0
110
0e742980c48d689f31700b208f22fd5a?s=48 k_koheyi
3
450
55c8dbd8bc4374c44d83b328fbba4b21?s=48 antje
2
120
C786d7772602b488a7972c38c143f61c?s=48 con_mame
3
1.8k
3623c11f38517055d9040073ed81913b?s=48 endoumari
3
820
Cd341135f01e6abaf3e9906ca8977256?s=48 emory
0
140
E525f881c3ee0fc2b2ce53d80a82b9d8?s=48 13imi
0
870
B1dca90d4b3ffd2ccd918774e1ba170d?s=48 hmatsu47
7
3.3k
57e8d22493c141fd3c7e7dbe62196c1b?s=48 uenitty
1
300
79c2f7db29ee6df3e1ceb85c6a0126d3?s=48 moriwaka
0
130
Aa254f26f91d4776b9cd19a7ce632867?s=48 ciniml
0
170

Featured

See All Featured
0bce06bd06ee7a2c4f5500f25dcf7f18?s=48 paulrobertlloyd
69
1.3k
5f2da528927a2ec9ba4fec2069cbc958?s=48 kneath
293
39k
5f50f94346fbcb23706f0707169317a4?s=48 aarron
254
36k
D47656e20ff5e42f125fc5ea0fd636c6?s=48 tmm1
61
7.4k
433acaea1012b25d97ae66da9b998dad?s=48 malarkey
190
8.2k
B6a8f005f39d23ffc930508ac9da68b9?s=48 vanstee
115
4.7k
Ae14cc4491ac334f9cd23f9f93b4305e?s=48 orderedlist
PRO
326
35k
5ce91fa49a613cbc3e20d5f96856473f?s=48 edds
55
9.2k
E190023b66e2b8aa73a842b106920c93?s=48 zenorocha
296
39k
56c4053438af8e8b90d6f53cbb7573be?s=48 jakevdp
769
190k
C9b18d9dff88a9dd2393364c2b3b21bd?s=48 colly
65
2.9k
168ccec72eee0530b818d44f3fedaacf?s=48 shlominoach
175
7.2k

Transcript

  1. Glint Fires arbitrary TCP servers http://www.flickr.com/photos/tjblackwell/3107540997/

  2. @kentaro Software engineer to build technical basis Rubyist / Perl

    Monger Kentaro Kuribayashi paperboy&co.
  3. None

  4. Problem

  5. Applications often consists of various components

  6. • Cache servers • Storage servers • Job queue/workers •

    Other applications (e.g. external APIs) • etc.

  7. • Launch servers in advance (e.g mysql/pg with Rails) •

    Stub out connections to the servers (e.g. stub/mock in RSpec) To deal with it, you may:

  8. Launching Servers • We don’t always need such many servers

    • It can be waste of limited resources of our daily- used local machine

  9. Stubbing out Connections • Efficient way to test apps that

    depends on external components • But we can’t tell whether or not our apps work well indeed against real servers

  10. Solution

  11. Glint

  12. Glint is a library which allows you to fire arbitrary

    TCP servers to help you test your codes against those real servers without stubbing out.

  13. 1. Fork a child process for a TCP server 2.

    Find an empty port for the server 3. Exec the server program using the port 4. Destroy the child process when it’s no longer needed

  14. 1. Fork a child process for a TCP server 2.

    Find an empty port for the server 3. Exec the server program using the port 4. Destroy the child process when it’s no longer needed

  15. Basic usage

  16. With RSpec

  17. servers/memcached.rb

  18. spec_helper.rb

  19. **_spec.rb

  20. App + External App

  21. initializer/**.rb

  22. **_spec.rb

  23. TCP server + TCP server

  24. Fluentd::Integration

  25. How Glint Cleans up the Servers

  26. http://ruby-doc.org/core-2.0/ObjectSpace.html “ObjectSpace also provides support for object finalizers, procs that

    will be called when a specific object is about to be destroyed by garbage collection.”

  27. glint/server.rb Glint::Server#stop

  28. • Stubbing out external connection may cause some problems •

    Glint allows you to easily fire up TCP servers as you need • Patches are welcome! Recap