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Move PokeUDP() to e2e service subpkg

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PokeUDP() is used at e2e service subpackage only, so this moves the
function and the related code to the subpackage for making e2e core
framework small.
This commit is contained in:
Kenichi Omichi 2019-10-24 22:47:49 +00:00
parent 3f402534f3
commit a74b63d335
2 changed files with 137 additions and 136 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

130
test/e2e/framework/networking_utils.go
View File

@ -830,136 +830,6 @@ func httpGetNoConnectionPoolTimeout(url string, timeout time.Duration) (*http.Re
return client.Get(url)
}
// UDPPokeParams is a struct for UDP poke parameters.
type UDPPokeParams struct {
Timeout time.Duration
Response string
}
// UDPPokeResult is a struct for UDP poke result.
type UDPPokeResult struct {
Status UDPPokeStatus
Error error // if there was any error
Response []byte // if code != 0
}
// UDPPokeStatus is string for representing UDP poke status.
type UDPPokeStatus string
const (
// UDPSuccess is UDP poke status which is success.
UDPSuccess UDPPokeStatus = "Success"
// UDPError is UDP poke status which is error.
UDPError UDPPokeStatus = "UnknownError"
// UDPTimeout is UDP poke status which is timeout.
UDPTimeout UDPPokeStatus = "TimedOut"
// UDPRefused is UDP poke status which is connection refused.
UDPRefused UDPPokeStatus = "ConnectionRefused"
// UDPBadResponse is UDP poke status which is bad response.
UDPBadResponse UDPPokeStatus = "BadResponse"
// Any time we add new errors, we should audit all callers of this.
)
// PokeUDP tries to connect to a host on a port and send the given request. Callers
// can specify additional success parameters, if desired.
//
// The result status will be characterized as precisely as possible, given the
// known users of this.
//
// The result error will be populated for any status other than Success.
//
// The result response will be populated if the UDP transaction was completed, even
// if the other test params make this a failure).
func PokeUDP(host string, port int, request string, params *UDPPokeParams) UDPPokeResult {
hostPort := net.JoinHostPort(host, strconv.Itoa(port))
url := fmt.Sprintf("udp://%s", hostPort)
ret := UDPPokeResult{}
// Sanity check inputs, because it has happened. These are the only things
// that should hard fail the test - they are basically ASSERT()s.
if host == "" {
Failf("Got empty host for UDP poke (%s)", url)
return ret
}
if port == 0 {
Failf("Got port==0 for UDP poke (%s)", url)
return ret
}
// Set default params.
if params == nil {
params = &UDPPokeParams{}
}
Logf("Poking %v", url)
con, err := net.Dial("udp", hostPort)
if err != nil {
ret.Status = UDPError
ret.Error = err
Logf("Poke(%q): %v", url, err)
return ret
}
_, err = con.Write([]byte(fmt.Sprintf("%s\n", request)))
if err != nil {
ret.Error = err
neterr, ok := err.(net.Error)
if ok && neterr.Timeout() {
ret.Status = UDPTimeout
} else if strings.Contains(err.Error(), "connection refused") {
ret.Status = UDPRefused
} else {
ret.Status = UDPError
}
Logf("Poke(%q): %v", url, err)
return ret
}
if params.Timeout != 0 {
err = con.SetDeadline(time.Now().Add(params.Timeout))
if err != nil {
ret.Status = UDPError
ret.Error = err
Logf("Poke(%q): %v", url, err)
return ret
}
}
bufsize := len(params.Response) + 1
if bufsize == 0 {
bufsize = 4096
}
var buf = make([]byte, bufsize)
n, err := con.Read(buf)
if err != nil {
ret.Error = err
neterr, ok := err.(net.Error)
if ok && neterr.Timeout() {
ret.Status = UDPTimeout
} else if strings.Contains(err.Error(), "connection refused") {
ret.Status = UDPRefused
} else {
ret.Status = UDPError
}
Logf("Poke(%q): %v", url, err)
return ret
}
ret.Response = buf[0:n]
if params.Response != "" && string(ret.Response) != params.Response {
ret.Status = UDPBadResponse
ret.Error = fmt.Errorf("response does not match expected string: %q", string(ret.Response))
Logf("Poke(%q): %v", url, ret.Error)
return ret
}
ret.Status = UDPSuccess
Logf("Poke(%q): success", url)
return ret
}
// TestUnderTemporaryNetworkFailure blocks outgoing network traffic on 'node'. Then runs testFunc and returns its status.
// At the end (even in case of errors), the network traffic is brought back to normal.
// This function executes commands on a node so it will work only for some

143
test/e2e/framework/service/util.go
View File

@ -22,6 +22,7 @@ import (
"net"
"net/http"
"strconv"
"strings"
"time"
utilnet "k8s.io/apimachinery/pkg/util/net"
@ -90,11 +91,11 @@ func TestRejectedHTTP(host string, port int, timeout time.Duration) {
// TestReachableUDP tests that the given host serves UDP on the given port.
func TestReachableUDP(host string, port int, timeout time.Duration) {
pollfn := func() (bool, error) {
result := framework.PokeUDP(host, port, "echo hello", &framework.UDPPokeParams{
result := pokeUDP(host, port, "echo hello", &UDPPokeParams{
Timeout: 3 * time.Second,
Response: "hello",
})
if result.Status == framework.UDPSuccess {
if result.Status == UDPSuccess {
return true, nil
}
return false, nil // caller can retry
@ -108,8 +109,8 @@ func TestReachableUDP(host string, port int, timeout time.Duration) {
// TestNotReachableUDP tests that the given host doesn't serve UDP on the given port.
func TestNotReachableUDP(host string, port int, timeout time.Duration) {
pollfn := func() (bool, error) {
result := framework.PokeUDP(host, port, "echo hello", &framework.UDPPokeParams{Timeout: 3 * time.Second})
if result.Status != framework.UDPSuccess && result.Status != framework.UDPError {
result := pokeUDP(host, port, "echo hello", &UDPPokeParams{Timeout: 3 * time.Second})
if result.Status != UDPSuccess && result.Status != UDPError {
return true, nil
}
return false, nil // caller can retry
@ -122,8 +123,8 @@ func TestNotReachableUDP(host string, port int, timeout time.Duration) {
// TestRejectedUDP tests that the given host rejects a UDP request on the given port.
func TestRejectedUDP(host string, port int, timeout time.Duration) {
pollfn := func() (bool, error) {
result := framework.PokeUDP(host, port, "echo hello", &framework.UDPPokeParams{Timeout: 3 * time.Second})
if result.Status == framework.UDPRefused {
result := pokeUDP(host, port, "echo hello", &UDPPokeParams{Timeout: 3 * time.Second})
if result.Status == UDPRefused {
return true, nil
}
return false, nil // caller can retry
@ -211,3 +212,133 @@ func GetHTTPContent(host string, port int, timeout time.Duration, url string) by
}
return body
}
// UDPPokeParams is a struct for UDP poke parameters.
type UDPPokeParams struct {
Timeout time.Duration
Response string
}
// UDPPokeResult is a struct for UDP poke result.
type UDPPokeResult struct {
Status UDPPokeStatus
Error error // if there was any error
Response []byte // if code != 0
}
// UDPPokeStatus is string for representing UDP poke status.
type UDPPokeStatus string
const (
// UDPSuccess is UDP poke status which is success.
UDPSuccess UDPPokeStatus = "Success"
// UDPError is UDP poke status which is error.
UDPError UDPPokeStatus = "UnknownError"
// UDPTimeout is UDP poke status which is timeout.
UDPTimeout UDPPokeStatus = "TimedOut"
// UDPRefused is UDP poke status which is connection refused.
UDPRefused UDPPokeStatus = "ConnectionRefused"
// UDPBadResponse is UDP poke status which is bad response.
UDPBadResponse UDPPokeStatus = "BadResponse"
// Any time we add new errors, we should audit all callers of this.
)
// pokeUDP tries to connect to a host on a port and send the given request. Callers
// can specify additional success parameters, if desired.
//
// The result status will be characterized as precisely as possible, given the
// known users of this.
//
// The result error will be populated for any status other than Success.
//
// The result response will be populated if the UDP transaction was completed, even
// if the other test params make this a failure).
func pokeUDP(host string, port int, request string, params *UDPPokeParams) UDPPokeResult {
hostPort := net.JoinHostPort(host, strconv.Itoa(port))
url := fmt.Sprintf("udp://%s", hostPort)
ret := UDPPokeResult{}
// Sanity check inputs, because it has happened. These are the only things
// that should hard fail the test - they are basically ASSERT()s.
if host == "" {
framework.Failf("Got empty host for UDP poke (%s)", url)
return ret
}
if port == 0 {
framework.Failf("Got port==0 for UDP poke (%s)", url)
return ret
}
// Set default params.
if params == nil {
params = &UDPPokeParams{}
}
framework.Logf("Poking %v", url)
con, err := net.Dial("udp", hostPort)
if err != nil {
ret.Status = UDPError
ret.Error = err
framework.Logf("Poke(%q): %v", url, err)
return ret
}
_, err = con.Write([]byte(fmt.Sprintf("%s\n", request)))
if err != nil {
ret.Error = err
neterr, ok := err.(net.Error)
if ok && neterr.Timeout() {
ret.Status = UDPTimeout
} else if strings.Contains(err.Error(), "connection refused") {
ret.Status = UDPRefused
} else {
ret.Status = UDPError
}
framework.Logf("Poke(%q): %v", url, err)
return ret
}
if params.Timeout != 0 {
err = con.SetDeadline(time.Now().Add(params.Timeout))
if err != nil {
ret.Status = UDPError
ret.Error = err
framework.Logf("Poke(%q): %v", url, err)
return ret
}
}
bufsize := len(params.Response) + 1
if bufsize == 0 {
bufsize = 4096
}
var buf = make([]byte, bufsize)
n, err := con.Read(buf)
if err != nil {
ret.Error = err
neterr, ok := err.(net.Error)
if ok && neterr.Timeout() {
ret.Status = UDPTimeout
} else if strings.Contains(err.Error(), "connection refused") {
ret.Status = UDPRefused
} else {
ret.Status = UDPError
}
framework.Logf("Poke(%q): %v", url, err)
return ret
}
ret.Response = buf[0:n]
if params.Response != "" && string(ret.Response) != params.Response {
ret.Status = UDPBadResponse
ret.Error = fmt.Errorf("response does not match expected string: %q", string(ret.Response))
framework.Logf("Poke(%q): %v", url, ret.Error)
return ret
}
ret.Status = UDPSuccess
framework.Logf("Poke(%q): success", url)
return ret
}