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Fix race condition in CommandMap#prefix #322
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leehambley
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capistrano:master
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mattbrictson:fix-command-map-race-condition
Jan 30, 2016
Merged
Fix race condition in CommandMap#prefix #322
leehambley
merged 1 commit into
capistrano:master
from
mattbrictson:fix-command-map-race-condition
Jan 30, 2016
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`PrefixProvider#[]` could return `nil` in multi-threaded scenarios due to a race condition involving `||=`, which is not an atomic operation in JRuby. The test that I added failed with JRuby 9.0.4.0 before the fix; now it passes.
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Excellent catch @mattbrictson |
leehambley
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Jan 30, 2016
Fix race condition in CommandMap#prefix
(I know you wanted some feedback from the jRuby guys who were struggling, but the patch is harmless) |
jsonn
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Oct 17, 2016
## [1.11.3][] (2016-09-16) * Fix known_hosts caching to match on the entire hostlist [PR #364](capistrano/sshkit#364) @byroot ## [1.11.2][] (2016-07-29) ### Bug fixes * Fixed a crash occurring when `Host@keys` was set to a non-Enumerable. @xavierholt [PR #360](capistrano/sshkit#360) ## [1.11.1][] (2016-06-17) ### Bug fixes * Fixed a regression in 1.11.0 that would cause `ArgumentError: invalid option(s): known_hosts` in some older versions of net-ssh. @byroot [#357](capistrano/sshkit#357) ## [1.11.0][] (2016-06-14) ### Bug fixes * Fixed colorized output alignment in Logger::Pretty. @xavierholt [PR #349](capistrano/sshkit#349) * Fixed a bug that prevented nested `with` calls [#43](capistrano/sshkit#43) ### Other changes * Known hosts lookup optimization is now enabled by default. @byroot ## 1.10.0 (2016-04-22) * You can now opt-in to caching of SSH's known_hosts file for a speed boost when deploying to a large fleet of servers. Refer to the [README](https://github.com/capistrano/sshkit/tree/v1.10.0#known-hosts-caching) for details. We plan to turn this on by default in a future version of SSHKit. [PR #330](capistrano/sshkit#330) @byroot * SSHKit now explicitly closes its pooled SSH connections when Ruby exits; this fixes `zlib(finalizer): the stream was freed prematurely` warnings [PR #343](capistrano/sshkit#343) @mattbrictson * Allow command map entries (`SSHKit::CommandMap#[]`) to be Procs [PR #310](capistrano/sshkit#310) @mikz ## 1.9.0 **Refer to the 1.9.0.rc1 release notes for a full list of new features, fixes, and potentially breaking changes since SSHKit 1.8.1.** There are no changes since 1.9.0.rc1. ## 1.9.0.rc1 ### Potentially breaking changes * The SSHKit DSL is no longer automatically included when you `require` it. **This means you must now explicitly `include SSHKit::DSL`.** See [PR #219](capistrano/sshkit#219) for details. @beatrichartz * `SSHKit::Backend::Printer#test` now always returns true [PR #312](capistrano/sshkit#312) @mikz ### New features * `SSHKit::Formatter::Abstract` now accepts an optional Hash of options [PR #308](capistrano/sshkit#308) @mattbrictson * Add `SSHKit::Backend.current` so that Capistrano plugin authors can refactor helper methods and still have easy access to the currently-executing Backend without having to use global variables. * Add `SSHKit.config.default_runner` options that allows to override default command runner. This option also accepts a name of the custom runner class. * The ConnectionPool has been rewritten in this release to be more efficient and have a cleaner internal API. You can still completely disable the pool by setting `SSHKit::Backend::Netssh.pool.idle_timeout = 0`. @mattbrictson @byroot [PR #328](capistrano/sshkit#328) ### Bug fixes * make sure working directory for commands is properly cleared after `within` blocks [PR #307](capistrano/sshkit#307) @steved * display more accurate string for commands with spaces being output in `Formatter::Pretty` [PR #304](capistrano/sshkit#304) @steved [PR #319](capistrano/sshkit#319) @mattbrictson * Fix a race condition experienced in JRuby that could cause multi-server deploys to fail. [PR #322](capistrano/sshkit#322) @mattbrictson
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PrefixProvider#[]
could returnnil
in multi-threaded scenarios due to a race condition involving||=
, which is not an atomic operation in JRuby.The test that I added failed with JRuby 9.0.4.0 before the fix; now it passes.
Fixes capistrano/capistrano#1528