Rewrite OS bean provider to avoid using reflection

Try to cast the OperatingSystemMVBean to unix instance and in success
case use that instance directly instead of reflection based approach.

Given that 99% of gerrit instances are used on linux based systems
in production, we can avoid reflection access altogether and thus
administrators wouldn't need to pass:

  --add-opens=jdk.management/com.sun.management.internal=ALL-UNNAMED

option on newer Java versions.

Test Plan (on *nix system):

1. Build gerrit to produce Java lanuage level 11:

  $ bazel build --host_javabase=@bazel_tools//tools/jdk:remote_jdk11 \
    --javabase=@bazel_tools//tools/jdk:remote_jdk11 \
    --host_java_toolchain=@bazel_tools//tools/jdk:toolchain_java11 \
    --java_toolchain=@bazel_tools//tools/jdk:toolchain_java11 \
    :release

2. Init new gerrit site
3. Run gerrit site with Java 11
4. Confirm that it can be started and works as expected without passing
  --add-opens=jdk.management/com.sun.management.internal=ALL-UNNAMED
option.

Bug: Issue 7843
Change-Id: I712d3fab05b267fa4ab5b3ba17247287aebebcb6
6 files changed
tree: 2b6f3d74d2e8d5c270463f2a06822c2fb7af979e
  1. .bazelignore
  2. .bazelproject
  3. .bazelrc
  4. .bazelversion
  5. .editorconfig
  6. .git-blame-ignore-revs
  7. .gitignore
  8. .gitmodules
  9. .gitreview
  10. .mailmap
  11. .pydevproject
  12. .settings/
  13. BUILD
  14. COPYING
  15. Documentation/
  16. INSTALL
  17. README.md
  18. ReleaseNotes/
  19. SUBMITTING_PATCHES
  20. WORKSPACE
  21. contrib/
  22. gerrit-acceptance-framework/
  23. gerrit-acceptance-tests/
  24. gerrit-cache-h2/
  25. gerrit-cache-mem/
  26. gerrit-common/
  27. gerrit-elasticsearch/
  28. gerrit-extension-api/
  29. gerrit-gpg/
  30. gerrit-gwtdebug/
  31. gerrit-gwtexpui/
  32. gerrit-gwtui-common/
  33. gerrit-gwtui/
  34. gerrit-httpd/
  35. gerrit-index/
  36. gerrit-launcher/
  37. gerrit-lucene/
  38. gerrit-main/
  39. gerrit-oauth/
  40. gerrit-openid/
  41. gerrit-patch-commonsnet/
  42. gerrit-patch-jgit/
  43. gerrit-pgm/
  44. gerrit-plugin-api/
  45. gerrit-plugin-gwtui/
  46. gerrit-prettify/
  47. gerrit-reviewdb/
  48. gerrit-server/
  49. gerrit-sshd/
  50. gerrit-test-util/
  51. gerrit-util-cli/
  52. gerrit-util-http/
  53. gerrit-util-ssl/
  54. gerrit-war/
  55. lib/
  56. plugins/
  57. polygerrit-ui/
  58. tools/
  59. version.bzl
  60. website/
README.md

Gerrit Code Review

Gerrit is a code review and project management tool for Git based projects.

Build Status

Objective

Gerrit makes reviews easier by showing changes in a side-by-side display, and allowing inline comments to be added by any reviewer.

Gerrit simplifies Git based project maintainership by permitting any authorized user to submit changes to the master Git repository, rather than requiring all approved changes to be merged in by hand by the project maintainer.

Documentation

For information about how to install and use Gerrit, refer to the documentation.

Source

Our canonical Git repository is located on googlesource.com. There is a mirror of the repository on Github.

Reporting bugs

Please report bugs on the issue tracker.

Contribute

Gerrit is the work of hundreds of contributors. We appreciate your help!

Please read the contribution guidelines.

Note that we do not accept Pull Requests via the Github mirror.

Getting in contact

The Developer Mailing list is repo-discuss on Google Groups.

License

Gerrit is provided under the Apache License 2.0.

Build

Install Bazel and run the following:

    git clone --recursive https://gerrit.googlesource.com/gerrit
    cd gerrit && bazel build release

Install binary packages (Deb/Rpm)

The instruction how to configure GerritForge/BinTray repositories is here

On Debian/Ubuntu run:

    apt-get update & apt-get install gerrit=<version>-<release>

NOTE: release is a counter that starts with 1 and indicates the number of packages that have been released with the same version of the software.

On CentOS/RedHat run:

    yum clean all && yum install gerrit-<version>[-<release>]

On Fedora run:

    dnf clean all && dnf install gerrit-<version>[-<release>]

Use pre-built Gerrit images on Docker

Docker images of Gerrit are available on DockerHub

To run a CentOS 7 based Gerrit image:

    docker run -p 8080:8080 gerritforge/gerrit-centos7[:version]

To run a Ubuntu 15.04 based Gerrit image:

    docker run -p 8080:8080 gerritforge/gerrit-ubuntu15.04[:version]

NOTE: release is optional. Last released package of the version is installed if the release number is omitted.