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forgejo/modules/process/context.go
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Make Requests Processes and create process hierarchy. Associate OpenRepository with context. ()
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>
2021-11-30 20:06:32 +00:00

69 lines
1.7 KiB
Go

// Copyright 2021 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package process
import (
"context"
)
// Context is a wrapper around context.Context and contains the current pid for this context
type Context struct {
context.Context
pid IDType
}
// GetPID returns the PID for this context
func (c *Context) GetPID() IDType {
return c.pid
}
// GetParent returns the parent process context (if any)
func (c *Context) GetParent() *Context {
return GetContext(c.Context)
}
// 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
func (c *Context) Value(key interface{}) interface{} {
if key == ProcessContextKey {
return c
}
return c.Context.Value(key)
}
// ProcessContextKey is the key under which process contexts are stored
var ProcessContextKey interface{} = "process-context"
// GetContext will return a process context if one exists
func GetContext(ctx context.Context) *Context {
if pCtx, ok := ctx.(*Context); ok {
return pCtx
}
pCtxInterface := ctx.Value(ProcessContextKey)
if pCtxInterface == nil {
return nil
}
if pCtx, ok := pCtxInterface.(*Context); ok {
return pCtx
}
return nil
}
// GetPID returns the PID for this context
func GetPID(ctx context.Context) IDType {
pCtx := GetContext(ctx)
if pCtx == nil {
return ""
}
return pCtx.GetPID()
}
// GetParentPID returns the ParentPID for this context
func GetParentPID(ctx context.Context) IDType {
var parentPID IDType
if parentProcess := GetContext(ctx); parentProcess != nil {
parentPID = parentProcess.GetPID()
}
return parentPID
}