60 lines
1.3 KiB
Go
60 lines
1.3 KiB
Go
/*
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Copyright 2020 VMware, Inc.
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SPDX-License-Identifier: Apache-2.0
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*/
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package controllerlib
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import (
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"context"
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"sync"
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"k8s.io/klog/v2"
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)
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type Manager interface {
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Start(ctx context.Context)
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WithController(controller Controller, workers int) Manager
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}
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func NewManager() Manager {
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return &controllerManager{}
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}
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// runnableController represents single controller runnable configuration.
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type runnableController struct {
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controller Controller
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workers int
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}
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type controllerManager struct {
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controllers []runnableController
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}
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var _ Manager = &controllerManager{}
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func (c *controllerManager) WithController(controller Controller, workers int) Manager {
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c.controllers = append(c.controllers, runnableController{
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controller: controller,
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workers: workers,
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})
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return c
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}
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// Start will run all managed controllers and block until all controllers shutdown.
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// When the context passed is cancelled, all controllers are signalled to shutdown.
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func (c *controllerManager) Start(ctx context.Context) {
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var wg sync.WaitGroup
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wg.Add(len(c.controllers))
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for i := range c.controllers {
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idx := i
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go func() {
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r := c.controllers[idx]
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defer klog.InfoS("controller terminated", "controller", r.controller.Name())
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defer wg.Done()
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r.controller.Run(ctx, r.workers)
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}()
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}
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wg.Wait()
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}
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