Make Requests Processes and create process hierarchy. Associate OpenRepository with context. (#17125)
This PR registers requests with the process manager and manages hierarchy within the processes. Git repos are then associated with a context, (usually the request's context) - with sub commands using this context as their base context. Signed-off-by: Andrew Thornton <art27@cantab.net>release
zeripath
GitHub
parent
d894c90b70
commit
01087e9eef
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// Copyright 2021 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package process
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import (
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"context"
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)
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// Context is a wrapper around context.Context and contains the current pid for this context
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type Context struct {
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context.Context
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pid IDType
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}
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// GetPID returns the PID for this context
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func (c *Context) GetPID() IDType {
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return c.pid
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}
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// GetParent returns the parent process context (if any)
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func (c *Context) GetParent() *Context {
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return GetContext(c.Context)
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}
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// Value is part of the interface for context.Context. We mostly defer to the internal context - but we return this in response to the ProcessContextKey
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func (c *Context) Value(key interface{}) interface{} {
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if key == ProcessContextKey {
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return c
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}
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return c.Context.Value(key)
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}
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// ProcessContextKey is the key under which process contexts are stored
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var ProcessContextKey interface{} = "process-context"
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// GetContext will return a process context if one exists
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func GetContext(ctx context.Context) *Context {
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if pCtx, ok := ctx.(*Context); ok {
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return pCtx
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}
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pCtxInterface := ctx.Value(ProcessContextKey)
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if pCtxInterface == nil {
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return nil
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}
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if pCtx, ok := pCtxInterface.(*Context); ok {
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return pCtx
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}
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return nil
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}
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// GetPID returns the PID for this context
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func GetPID(ctx context.Context) IDType {
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pCtx := GetContext(ctx)
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if pCtx == nil {
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return ""
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}
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return pCtx.GetPID()
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}
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// GetParentPID returns the ParentPID for this context
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func GetParentPID(ctx context.Context) IDType {
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var parentPID IDType
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if parentProcess := GetContext(ctx); parentProcess != nil {
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parentPID = parentProcess.GetPID()
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}
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return parentPID
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}
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@ -0,0 +1,66 @@
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// Copyright 2021 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package process
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import (
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"context"
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"sync"
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"time"
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)
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// Process represents a working process inheriting from Gitea.
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type Process struct {
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PID IDType // Process ID, not system one.
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ParentPID IDType
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Description string
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Start time.Time
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Cancel context.CancelFunc
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lock sync.Mutex
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children []*Process
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}
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// Children gets the children of the process
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// Note: this function will behave nicely even if p is nil
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func (p *Process) Children() (children []*Process) {
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if p == nil {
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return
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}
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p.lock.Lock()
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defer p.lock.Unlock()
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children = make([]*Process, len(p.children))
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copy(children, p.children)
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return children
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}
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// AddChild adds a child process
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// Note: this function will behave nicely even if p is nil
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func (p *Process) AddChild(child *Process) {
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if p == nil {
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return
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}
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p.lock.Lock()
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defer p.lock.Unlock()
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p.children = append(p.children, child)
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}
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// RemoveChild removes a child process
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// Note: this function will behave nicely even if p is nil
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func (p *Process) RemoveChild(process *Process) {
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if p == nil {
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return
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}
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p.lock.Lock()
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defer p.lock.Unlock()
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for i, child := range p.children {
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if child == process {
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p.children = append(p.children[:i], p.children[i+1:]...)
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return
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}
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}
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}
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@ -0,0 +1,20 @@
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<div class="item">
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<div class="df ac">
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<div class="content f1">
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<div class="header">{{.Process.Description}}</div>
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<div class="description"><span title="{{DateFmtLong .Process.Start}}">{{TimeSince .Process.Start .root.Lang}}</span></div>
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</div>
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<div>
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<a class="delete-button icon" href="" data-url="{{.root.Link}}/cancel/{{.Process.PID}}" data-id="{{.Process.PID}}" data-name="{{.Process.Description}}">{{svg "octicon-trash" 16 "text-red"}}</a>
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</div>
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</div>
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{{$children := .Process.Children}}
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{{if $children}}
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<div class="divided list">
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{{range $children}}
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{{template "admin/process-row" dict "Process" . "root" $.root}}
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{{end}}
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</div>
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{{end}}
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</div>
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@ -0,0 +1,10 @@
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<h4 class="ui top attached header">
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{{.i18n.Tr "admin.monitor.process"}}
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</h4>
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<div class="ui attached segment">
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<div class="ui relaxed divided list">
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{{range .Processes}}
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{{template "admin/process-row" dict "Process" . "root" $}}
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{{end}}
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</div>
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</div>
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