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6d5aa9218e
Introduce RequestContext: is a short-lived context that is used to store request-specific data. RequestContext could be used to clean form tmp files, close context git repo, and do some tracing in the future. Then a lot of legacy code could be removed or improved. For example: most `ctx.Repo.GitRepo.Close()` could be removed because the git repo could be closed when the request is done.
91 lines
3.0 KiB
Go
91 lines
3.0 KiB
Go
// Copyright 2020 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package context
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import (
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"context"
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"fmt"
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"net/http"
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"time"
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"code.gitea.io/gitea/modules/graceful"
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"code.gitea.io/gitea/modules/process"
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"code.gitea.io/gitea/modules/web"
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web_types "code.gitea.io/gitea/modules/web/types"
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)
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// PrivateContext represents a context for private routes
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type PrivateContext struct {
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*Base
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Override context.Context
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Repo *Repository
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}
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func init() {
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web.RegisterResponseStatusProvider[*PrivateContext](func(req *http.Request) web_types.ResponseStatusProvider {
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return req.Context().Value(privateContextKey).(*PrivateContext)
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})
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}
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// Deadline is part of the interface for context.Context and we pass this to the request context
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func (ctx *PrivateContext) Deadline() (deadline time.Time, ok bool) {
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if ctx.Override != nil {
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return ctx.Override.Deadline()
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}
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return ctx.Base.Deadline()
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}
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// Done is part of the interface for context.Context and we pass this to the request context
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func (ctx *PrivateContext) Done() <-chan struct{} {
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if ctx.Override != nil {
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return ctx.Override.Done()
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}
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return ctx.Base.Done()
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}
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// Err is part of the interface for context.Context and we pass this to the request context
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func (ctx *PrivateContext) Err() error {
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if ctx.Override != nil {
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return ctx.Override.Err()
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}
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return ctx.Base.Err()
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}
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var privateContextKey any = "default_private_context"
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// GetPrivateContext returns a context for Private routes
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func GetPrivateContext(req *http.Request) *PrivateContext {
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return req.Context().Value(privateContextKey).(*PrivateContext)
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}
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// PrivateContexter returns apicontext as middleware
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func PrivateContexter() func(http.Handler) http.Handler {
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return func(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
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base := NewBaseContext(w, req)
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ctx := &PrivateContext{Base: base}
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ctx.SetContextValue(privateContextKey, ctx)
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next.ServeHTTP(ctx.Resp, ctx.Req)
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})
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}
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}
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// OverrideContext overrides the underlying request context for Done() etc.
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// This function should be used when there is a need for work to continue even if the request has been cancelled.
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// Primarily this affects hook/post-receive and hook/proc-receive both of which need to continue working even if
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// the underlying request has timed out from the ssh/http push
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func OverrideContext() func(http.Handler) http.Handler {
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return func(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
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// We now need to override the request context as the base for our work because even if the request is cancelled we have to continue this work
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ctx := GetPrivateContext(req)
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var finished func()
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ctx.Override, _, finished = process.GetManager().AddTypedContext(graceful.GetManager().HammerContext(), fmt.Sprintf("PrivateContext: %s", ctx.Req.RequestURI), process.RequestProcessType, true)
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defer finished()
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next.ServeHTTP(ctx.Resp, ctx.Req)
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})
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}
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}
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