mirror of
https://github.com/go-gitea/gitea
synced 2024-11-09 11:31:34 +01:00
bd820aa9c5
To avoid duplicated load of the same data in an HTTP request, we can set
a context cache to do that. i.e. Some pages may load a user from a
database with the same id in different areas on the same page. But the
code is hidden in two different deep logic. How should we share the
user? As a result of this PR, now if both entry functions accept
`context.Context` as the first parameter and we just need to refactor
`GetUserByID` to reuse the user from the context cache. Then it will not
be loaded twice on an HTTP request.
But of course, sometimes we would like to reload an object from the
database, that's why `RemoveContextData` is also exposed.
The core context cache is here. It defines a new context
```go
type cacheContext struct {
ctx context.Context
data map[any]map[any]any
lock sync.RWMutex
}
var cacheContextKey = struct{}{}
func WithCacheContext(ctx context.Context) context.Context {
return context.WithValue(ctx, cacheContextKey, &cacheContext{
ctx: ctx,
data: make(map[any]map[any]any),
})
}
```
Then you can use the below 4 methods to read/write/del the data within
the same context.
```go
func GetContextData(ctx context.Context, tp, key any) any
func SetContextData(ctx context.Context, tp, key, value any)
func RemoveContextData(ctx context.Context, tp, key any)
func GetWithContextCache[T any](ctx context.Context, cacheGroupKey string, cacheTargetID any, f func() (T, error)) (T, error)
```
Then let's take a look at how `system.GetString` implement it.
```go
func GetSetting(ctx context.Context, key string) (string, error) {
return cache.GetWithContextCache(ctx, contextCacheKey, key, func() (string, error) {
return cache.GetString(genSettingCacheKey(key), func() (string, error) {
res, err := GetSettingNoCache(ctx, key)
if err != nil {
return "", err
}
return res.SettingValue, nil
})
})
}
```
First, it will check if context data include the setting object with the
key. If not, it will query from the global cache which may be memory or
a Redis cache. If not, it will get the object from the database. In the
end, if the object gets from the global cache or database, it will be
set into the context cache.
An object stored in the context cache will only be destroyed after the
context disappeared.
132 lines
5.4 KiB
Handlebars
132 lines
5.4 KiB
Handlebars
{{template "base/head" .}}
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<div role="main" aria-label="{{.Title}}" class="page-content repository new migrate">
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<div class="ui middle very relaxed page grid">
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<div class="column">
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<form class="ui form" action="{{.Link}}" method="post">
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{{template "base/disable_form_autofill"}}
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{{.CsrfTokenHtml}}
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<h3 class="ui top attached header">
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{{.locale.Tr "repo.migrate.migrate" .service.Title}}
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<input id="service_type" type="hidden" name="service" value="{{.service}}">
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</h3>
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<div class="ui attached segment">
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{{template "base/alert" .}}
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<div class="inline required field {{if .Err_CloneAddr}}error{{end}}">
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<label for="clone_addr">{{.locale.Tr "repo.migrate.clone_address"}}</label>
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<input id="clone_addr" name="clone_addr" value="{{.clone_addr}}" autofocus required>
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<span class="help">
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{{.locale.Tr "repo.migrate.clone_address_desc"}}{{if .ContextUser.CanImportLocal}} {{.locale.Tr "repo.migrate.clone_local_path"}}{{end}}
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</span>
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</div>
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<div class="inline field {{if .Err_Auth}}error{{end}}">
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<label for="auth_username">{{.locale.Tr "username"}}</label>
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<input id="auth_username" name="auth_username" value="{{.auth_username}}" {{if not .auth_username}}data-need-clear="true"{{end}}>
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</div>
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<div class="inline field {{if .Err_Auth}}error{{end}}">
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<label for="auth_password">{{.locale.Tr "password"}}</label>
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<input id="auth_password" name="auth_password" type="password" value="{{.auth_password}}">
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</div>
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{{template "repo/migrate/options" .}}
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<div class="inline field">
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<label>{{.locale.Tr "repo.migrate_items"}}</label>
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<div class="ui checkbox">
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<input name="wiki" type="checkbox" {{if .wiki}}checked{{end}}>
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<label>{{.locale.Tr "repo.migrate_items_wiki" | Safe}}</label>
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</div>
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</div>
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<div id="migrate_items">
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<span class="help">{{.locale.Tr "repo.migrate.migrate_items_options"}}</span>
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<div class="inline field">
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<label></label>
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<div class="ui checkbox">
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<input name="labels" type="checkbox" {{if .labels}}checked{{end}}>
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<label>{{.locale.Tr "repo.migrate_items_labels" | Safe}}</label>
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</div>
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<div class="ui checkbox">
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<input name="issues" type="checkbox" {{if .issues}}checked{{end}}>
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<label>{{.locale.Tr "repo.migrate_items_issues" | Safe}}</label>
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</div>
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</div>
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<div class="inline field">
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<label></label>
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<div class="ui checkbox">
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<input name="pull_requests" type="checkbox" {{if .pull_requests}}checked{{end}}>
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<label>{{.locale.Tr "repo.migrate_items_pullrequests" | Safe}}</label>
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</div>
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<div class="ui checkbox">
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<input name="releases" type="checkbox" {{if .releases}}checked{{end}}>
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<label>{{.locale.Tr "repo.migrate_items_releases" | Safe}}</label>
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</div>
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</div>
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<div class="inline field">
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<label></label>
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<div class="ui checkbox">
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<input name="milestones" type="checkbox" {{if .milestones}}checked{{end}}>
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<label>{{.locale.Tr "repo.migrate_items_milestones" | Safe}}</label>
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</div>
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</div>
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</div>
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<div class="ui divider"></div>
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<div class="inline required field {{if .Err_Owner}}error{{end}}">
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<label>{{.locale.Tr "repo.owner"}}</label>
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<div class="ui selection owner dropdown">
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<input type="hidden" id="uid" name="uid" value="{{.ContextUser.ID}}" required>
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<span class="text truncated-item-container" title="{{.ContextUser.Name}}">
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{{avatar $.Context .ContextUser 28 "mini"}}
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<span class="truncated-item-name">{{.ContextUser.ShortName 40}}</span>
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</span>
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{{svg "octicon-triangle-down" 14 "dropdown icon"}}
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<div class="menu" title="{{.SignedUser.Name}}">
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<div class="item truncated-item-container" data-value="{{.SignedUser.ID}}">
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{{avatar $.Context .SignedUser 28 "mini"}}
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<span class="truncated-item-name">{{.SignedUser.ShortName 40}}</span>
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</div>
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{{range .Orgs}}
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<div class="item truncated-item-container" data-value="{{.ID}}" title="{{.Name}}">
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{{avatar $.Context . 28 "mini"}}
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<span class="truncated-item-name">{{.ShortName 40}}</span>
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</div>
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{{end}}
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</div>
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</div>
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</div>
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<div class="inline required field {{if .Err_RepoName}}error{{end}}">
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<label for="repo_name">{{.locale.Tr "repo.repo_name"}}</label>
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<input id="repo_name" name="repo_name" value="{{.repo_name}}" required>
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</div>
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<div class="inline field">
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<label>{{.locale.Tr "repo.visibility"}}</label>
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<div class="ui checkbox">
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{{if .IsForcedPrivate}}
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<input name="private" type="checkbox" checked readonly>
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<label>{{.locale.Tr "repo.visibility_helper_forced" | Safe}}</label>
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{{else}}
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<input name="private" type="checkbox" {{if .private}}checked{{end}}>
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<label>{{.locale.Tr "repo.visibility_helper" | Safe}}</label>
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{{end}}
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</div>
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</div>
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<div class="inline field {{if .Err_Description}}error{{end}}">
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<label for="description">{{.locale.Tr "repo.repo_desc"}}</label>
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<textarea id="description" name="description">{{.description}}</textarea>
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</div>
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<div class="inline field">
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<label></label>
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<button class="ui green button">
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{{.locale.Tr "repo.migrate_repo"}}
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</button>
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</div>
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</div>
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</form>
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</div>
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</div>
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</div>
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{{template "base/footer" .}}
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