[DRAFT] Add network functions on the DPU side

[bn222]

No description provided.

[openshift-ci]

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[wizhaoredhat]

We might want to have a PullPolicy = Always for debugging here.

[wizhaoredhat]

This implementation does not work:

import (
	"errors"
	"fmt"
	"time"
)

func something(c chan error) {
	fmt.Println("HELLO1")
	c <- nil
}

func something3(c chan error) {
	fmt.Println("HELLO1")
	time.Sleep(5 * time.Second)
	c <- errors.New("an error")
}

func something2() error {
	c := make(chan error, 1)
	go something(c)
	go something3(c)
	return <-c
}
func main() {
	err := something2()
	fmt.Println(err)
}

It does not wait for all the go routines to finish, you need a wait group.

[wizhaoredhat]

Something like this works:

package main

import (
	"errors"
	"fmt"
	"sync"
	"time"
)

func test1(wg *sync.WaitGroup, c chan error) {
	defer wg.Done()
	fmt.Println("HELLO1")
	c <- nil
}

func test2(wg *sync.WaitGroup, c chan error) {
	defer wg.Done()
	fmt.Println("HELLO1")
	time.Sleep(5 * time.Second)
	c <- errors.New("an error")
}

func testing() chan error {
	c := make(chan error, 2)
	var wga sync.WaitGroup
	wga.Add(1)
	go test1(&wga, c)
	wga.Add(1)
	go test2(&wga, c)
	wga.Wait()
	close(c)
	return c
}
func main() {
	errors := testing()
	for err := range errors {
		fmt.Println(err)
	}
}

[wizhaoredhat]

Same comment as above.

[openshift-merge-robot]

PR needs rebase.

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[openshift-ci]

@bn222: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/unit	2d6dc9d	link	true	/test unit
ci/prow/e2e-dpu-operator-tests	2d6dc9d	link	true	/test e2e-dpu-operator-tests
ci/prow/make-test	2d6dc9d	link	true	/test make-test
ci/prow/make-fmt-check	2d6dc9d	link	true	/test make-fmt-check

Full PR test history. Your PR dashboard.

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