Commit 03a40a7e authored by Jason Lee's avatar Jason Lee

Avoid allocations in Ability class.

It won't change anything after they are first invoke, so add method cache to avoid allocations and avoid GC.

Benchmarks:

```
Calculating -------------------------------------
project_guest_rules without method cache
                        79.352k i/100ms
project_guest_rules with method cache
                        93.634k i/100ms
-------------------------------------------------
project_guest_rules without method cache
                          2.865M (±32.5%) i/s -     11.982M
project_guest_rules with method cache
                          4.419M (± 7.4%) i/s -     22.004M

Comparison:
project_guest_rules with method cache:  4418908.0 i/s
project_guest_rules without method cache:  2864514.0 i/s - 1.54x slower

Calculating -------------------------------------
project_report_rules without method cache
                        53.126k i/100ms
project_report_rules with method cache
                        97.473k i/100ms
-------------------------------------------------
project_report_rules without method cache
                          1.093M (±36.5%) i/s -      4.675M
project_report_rules with method cache
                          4.420M (± 7.2%) i/s -     22.029M
Comparison:
project_report_rules with method cache:  4420054.3 i/s
project_report_rules without method cache:  1092509.6 i/s - 4.05x slower
```

https://gist.github.com/huacnlee/b04788ae6df42fe769e4
parent b95f7b18
......@@ -132,14 +132,14 @@ class Ability
end
def public_project_rules
project_guest_rules + [
@public_project_rules ||= project_guest_rules + [
:download_code,
:fork_project
]
end
def project_guest_rules
[
@project_guest_rules ||= [
:read_project,
:read_wiki,
:read_issue,
......@@ -157,7 +157,7 @@ class Ability
end
def project_report_rules
project_guest_rules + [
@project_report_rules ||= project_guest_rules + [
:create_commit_status,
:read_commit_statuses,
:download_code,
......@@ -170,7 +170,7 @@ class Ability
end
def project_dev_rules
project_report_rules + [
@project_dev_rules ||= project_report_rules + [
:admin_merge_request,
:create_merge_request,
:create_wiki,
......@@ -181,7 +181,7 @@ class Ability
end
def project_archived_rules
[
@project_archived_rules ||= [
:create_merge_request,
:push_code,
:push_code_to_protected_branches,
......@@ -191,7 +191,7 @@ class Ability
end
def project_master_rules
project_dev_rules + [
@project_master_rules ||= project_dev_rules + [
:push_code_to_protected_branches,
:update_project_snippet,
:update_merge_request,
......@@ -206,7 +206,7 @@ class Ability
end
def project_admin_rules
project_master_rules + [
@project_admin_rules ||= project_master_rules + [
:change_namespace,
:change_visibility_level,
:rename_project,
......
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