NE-2839: Add HAProxy version upgrade tests

test/e2e/upgrade/upgrade.go

@@ -72,6 +72,9 @@ func AllTests() []upgrades.Test {
 		&prometheus.MetricsAvailableAfterUpgradeTest{},
 		&dns.UpgradeTest{},
 		&router.GatewayAPIUpgradeTest{},
+		&router.HAProxyVersionUpgradeTest{Mode: router.HAProxyUpgradeModeUnset},
+		&router.HAProxyVersionUpgradeTest{Mode: router.HAProxyUpgradeModeNonDefault},
+		&router.HAProxyVersionUpgradeTest{Mode: router.HAProxyUpgradeModeDefault},
 	}
 }
 

test/extended/router/haproxyversion_upgrade.go

@@ -0,0 +1,293 @@
+package router
+
+import (
+	"context"
+	"fmt"
+	"slices"
+	"strings"
+	"time"
+
+	g "github.com/onsi/ginkgo/v2"
+	o "github.com/onsi/gomega"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/kubernetes/test/e2e/framework"
+	"k8s.io/kubernetes/test/e2e/upgrades"
+
+	operatorv1 "github.com/openshift/api/operator/v1"
+	operatorv1client "github.com/openshift/client-go/operator/clientset/versioned"
+	exutil "github.com/openshift/origin/test/extended/util"
+)
+
+// HAProxyVersionUpgradeTest verifies that HAProxy version selection behaves
+// as expected during upgrades.
+// Mode is a test parameter that should define how the HAProxy version
+// should be configured before the upgrade.
+type HAProxyVersionUpgradeTest struct {
+	Mode HAProxyUpgradeMode
+
+	// internal state
+	oc             *exutil.CLI
+	operatorClient operatorv1client.Interface
+	controllers    *ingressControllers
+	versionConfig  haproxyVersionConfig
+	pinnedVersion  operatorv1.HAProxyVersion
+	precheckErr    error
+	ic             types.NamespacedName
+}
+
+// HAProxyUpgradeMode is the mode of the HAProxy upgrade.
+type HAProxyUpgradeMode string
+
+const (
+	// HAProxyUpgradeModeUnset defines the HAProxy version as unpinned before the upgrade.
+	HAProxyUpgradeModeUnset HAProxyUpgradeMode = "unset"
+	// HAProxyUpgradeModeDefault defines the HAProxy version with the default version before the upgrade.
+	HAProxyUpgradeModeDefault HAProxyUpgradeMode = "default"
+	// HAProxyUpgradeModeNonDefault defines the HAProxy version with a non default but supported version before the upgrade.
+	HAProxyUpgradeModeNonDefault HAProxyUpgradeMode = "non-default"
+)
+
+func (h *HAProxyVersionUpgradeTest) Name() string {
+	return "haproxy-version-upgrade-" + string(h.Mode)
+}
+
+func (h *HAProxyVersionUpgradeTest) DisplayName() string {
+	return fmt.Sprintf("[sig-network-edge][Feature:Router][apigroup:route.openshift.io] Verify HAProxy %s version state during upgrade", h.Mode)
+}
+
+// Skip returns true when the test cannot safely run: the API lacks the haproxyVersion field, the upgrade
+// is a multi-hop chain with a pinned version, or (for NonDefault) no safe non-default version is available.
+func (h *HAProxyVersionUpgradeTest) Skip(upgctx upgrades.UpgradeContext) bool {
+	framework.Logf("Upgrade config: %+v", upgctx)
+
+	if h.Mode != HAProxyUpgradeModeUnset && len(upgctx.Versions) > 2 {
+		// We could have a deprecation and dropping version in the middle of a
+		// multi-hop upgrade, so we cannot safely run the test having HAProxy pinned.
+		framework.Logf("skipping: cannot test a multi-hop upgrade with HAProxy pinned. mode=%q, versions=%d", h.Mode, len(upgctx.Versions))
+		return true
+	}
+
+	ctx := context.Background()
+
+	oc := exutil.NewCLIForMonitorTest(h.Name() + "-skip").AsAdmin()
+	hasField, err := apiHasHAProxyVersionField(ctx, oc)
+	if err != nil {
+		h.precheckErr = fmt.Errorf("error checking for HAProxy version API: %w", err)
+		return false
+	}
+	if !hasField {
+		framework.Logf("skipping: IngressController API is missing the haproxyVersion field")
+		return true
+	}
+
+	versions, err := getHAProxyVersionConfig(ctx, oc)
+	if err != nil {
+		h.precheckErr = fmt.Errorf("error getting HAProxy version config: %w", err)
+		return false
+	}
+	framework.Logf("HAProxy version config: %+v", versions)
+
+	if h.Mode == HAProxyUpgradeModeNonDefault && len(versions.getNonDefaultVersions()) == 0 {
+		framework.Logf("skipping: cannot use non default: there are no non default versions")
+		return true
+	}
+
+	if h.Mode == HAProxyUpgradeModeNonDefault && len(versions.getNonDefaultUpgradeableVersions()) == 0 {
+		// Strictly, only a y-stream upgrade could drop this version, but Skip() cannot
+		// reliably tell y-stream from z-stream before the upgrade completes (the target
+		// may be given as a pull-spec, not a parseable Version), so we skip conservatively
+		// regardless of upgrade type.
+		framework.Logf("skipping: cannot use non default: the only available non default version is deprecated")
+		return true
+	}
+
+	h.versionConfig = versions
+	h.precheckErr = nil
+	return false
+}
+
+// Setup configures all the test attributes and creates an IngressController
+// resource that should be verified after the upgrade.
+func (h *HAProxyVersionUpgradeTest) Setup(ctx context.Context, f *framework.Framework) {
+	o.Expect(h.precheckErr).NotTo(o.HaveOccurred(), "Skip() precheck failed: could not determine if HAProxy version upgrade test should run")
+
+	g.By("Setting up HAProxy version test")
+
+	h.oc = exutil.NewCLIWithFramework(f).AsAdmin()
+	h.operatorClient = h.oc.AdminOperatorClient()
+	h.controllers = &ingressControllers{}
+
+	var haproxyVersion operatorv1.HAProxyVersion
+	switch h.Mode {
+	case HAProxyUpgradeModeUnset:
+		haproxyVersion = ""
+	case HAProxyUpgradeModeDefault:
+		haproxyVersion = h.versionConfig.defaultVersion
+	case HAProxyUpgradeModeNonDefault:
+		haproxyVersion = h.versionConfig.getNonDefaultUpgradeableVersions()[0]
+	default:
+		framework.Failf("unsupported test mode: %q", h.Mode)
+	}
+
+	g.By("Creating the IngressController resource")
+
+	ic, err := h.controllers.createIngressController(ctx, h.oc, func(controller *operatorv1.IngressController) {
+		controller.Spec.HAProxyVersion = haproxyVersion
+	})
+	o.Expect(err).NotTo(o.HaveOccurred(), "error creating IngressController resource")
+	h.ic = types.NamespacedName{
+		Namespace: ic.Namespace,
+		Name:      ic.Name,
+	}
+	h.pinnedVersion = haproxyVersion
+
+	framework.Logf("Created IngressController %s with spec.haproxyVersion=%q", h.ic.String(), haproxyVersion)
+
+	g.By("Checking HAProxy version for Ingress " + h.ic.String())
+
+	waitingVersion := haproxyVersion
+	if waitingVersion == "" {
+		waitingVersion = h.versionConfig.defaultVersion
+	}
+	err = waitForHAProxyVersion(ctx, h.oc, ic.Name, waitingVersion)
+	o.Expect(err).NotTo(o.HaveOccurred(), "error getting HAProxy version from runtime API")
+}
+
+// Test verifies that the expected HAProxy version is found after the upgrade.
+// Current version is read from the IngressController status and from the
+// HAProxy's runtime API.
+func (h *HAProxyVersionUpgradeTest) Test(ctx context.Context, f *framework.Framework, done <-chan struct{}, upgrade upgrades.UpgradeType) {
+	g.By("Waiting for upgrade to complete")
+	<-done
+
+	err := waitForIngressControllerReady(h.oc, h.ic)
+	o.Expect(err).NotTo(o.HaveOccurred(), fmt.Sprintf("error waiting for IngressController %s to be ready", h.ic.String()))
+
+	g.By("Validating HAProxy version after upgrade")
+
+	versions, err := getHAProxyVersionConfig(ctx, h.oc)
+	o.Expect(err).NotTo(o.HaveOccurred(), "error getting HAProxy version config")
+	framework.Logf("HAProxy version config: %+v", versions)
+
+	var expectedVersion operatorv1.HAProxyVersion
+	switch h.Mode {
+	case HAProxyUpgradeModeUnset:
+		expectedVersion = versions.defaultVersion
+	case HAProxyUpgradeModeDefault, HAProxyUpgradeModeNonDefault:
+		expectedVersion = h.pinnedVersion
+	default:
+		framework.Failf("unsupported test mode: %q", h.Mode)
+	}
+
+	framework.Logf("Post-upgrade HAProxy version check: expected=%s", expectedVersion)
+
+	const rollingOutTimeout = 15 * time.Minute
+	err = waitForEffectiveHAProxyVersion(ctx, h.operatorClient, h.ic, expectedVersion, rollingOutTimeout)
+	o.Expect(err).NotTo(o.HaveOccurred(), "error waiting for EffectiveHAProxyVersion")
+
+	g.By("Validating HAProxy version from runtime API")
+
+	err = waitForHAProxyVersion(ctx, h.oc, h.ic.Name, expectedVersion)
+	o.Expect(err).NotTo(o.HaveOccurred(), "error getting HAProxy version from runtime API")
+}
+
+// Teardown removes the configured IngressController after the test runs.
+func (h *HAProxyVersionUpgradeTest) Teardown(ctx context.Context, f *framework.Framework) {
+	if h.operatorClient == nil {
+		framework.Logf("Skipping cleanup because setup did not initialize test resources")
+		return
+	}
+	if err := h.controllers.deleteAll(ctx, h.operatorClient); err != nil {
+		framework.Logf("error deleting IngressController resource: %s", err.Error())
+	}
+}
+
+// haproxyVersionConfig has HAProxy version configuration from the Ingress operator.
+type haproxyVersionConfig struct {
+	defaultVersion    operatorv1.HAProxyVersion
+	deprecatedVersion operatorv1.HAProxyVersion
+	availableVersions []operatorv1.HAProxyVersion
+}
+
+// getHAProxyVersionConfig parses the current Ingress operator configuration
+// and extracts the HAProxy version configuration.
+func getHAProxyVersionConfig(ctx context.Context, oc *exutil.CLI) (haproxyVersionConfig, error) {
+	operatorNamespace := "openshift-ingress-operator"
+	operatorName := "ingress-operator"
+	deploy, err := oc.AdminKubeClient().AppsV1().Deployments(operatorNamespace).Get(ctx, operatorName, metav1.GetOptions{})
+	if err != nil {
+		return haproxyVersionConfig{}, err
+	}
+
+	containers := deploy.Spec.Template.Spec.Containers
+	if len(containers) < 1 {
+		return haproxyVersionConfig{}, fmt.Errorf("ingress-operator deployment is missing the operator container")
+	}
+
+	operator := containers[0]
+	if operator.Name != operatorName {
+		return haproxyVersionConfig{}, fmt.Errorf("ingress-operator deployment has an unexpected container name: %s", operator.Name)
+	}
+
+	// Read default and deprecated versions from Env
+	var defaultVersion, deprecatedVersion operatorv1.HAProxyVersion
+	for _, env := range operator.Env {
+		switch env.Name {
+		case "DEFAULT_HAPROXY_VERSION":
+			defaultVersion = operatorv1.HAProxyVersion(env.Value)
+		case "DEPRECATED_HAPROXY_VERSION":
+			deprecatedVersion = operatorv1.HAProxyVersion(env.Value)
+		}
+	}
+	if defaultVersion == "" {
+		// envvar not found, so this is pre 4.23/5.0, assume "2.8"
+		defaultVersion = "2.8"
+	}
+
+	// Read available versions from Command.
+	// The available versions are configured this way:
+	//
+	// command:
+	// - ...
+	// - --haproxy-image
+	// - "2.8=$(HAPROXY_28_IMAGE)"
+	// - --haproxy-image
+	// - "3.2=$(HAPROXY_32_IMAGE)"
+	//
+	var availableVersions []operatorv1.HAProxyVersion
+	cmds := operator.Command
+	for i := range cmds {
+		if cmds[i] == "--haproxy-image" && len(cmds) > i+1 {
+			// "2.8=$(HAPROXY_28_IMAGE)"
+			value := cmds[i+1]
+			// ["2.8", "$(HAPROXY_28_IMAGE)"]
+			version := strings.Split(value, "=")
+			availableVersions = append(availableVersions, operatorv1.HAProxyVersion(version[0]))
+		}
+	}
+	if len(availableVersions) == 0 {
+		// --haproxy-image not configured, so this is pre 4.23/5.0, assume [defaultVersion]
+		availableVersions = []operatorv1.HAProxyVersion{defaultVersion}
+	}
+
+	return haproxyVersionConfig{
+		defaultVersion:    defaultVersion,
+		deprecatedVersion: deprecatedVersion,
+		availableVersions: availableVersions,
+	}, nil
+}
+
+// getNonDefaultVersions creates a list of non default versions, derived from the default and the available ones.
+func (h *haproxyVersionConfig) getNonDefaultVersions() []operatorv1.HAProxyVersion {
+	return slices.DeleteFunc(slices.Clone(h.availableVersions), func(v operatorv1.HAProxyVersion) bool {
+		return v == h.defaultVersion
+	})
+}
+
+// getNonDefaultUpgradeableVersions creates a list of non default and upgradeable versions, derived from the default, the deprecated, and the available ones.
+func (h *haproxyVersionConfig) getNonDefaultUpgradeableVersions() []operatorv1.HAProxyVersion {
+	return slices.DeleteFunc(slices.Clone(h.availableVersions), func(v operatorv1.HAProxyVersion) bool {
+		return v == h.defaultVersion || v == h.deprecatedVersion
+	})
+}