[YUNIKORN-2931] Create foreign pod e2e tests

Makefile

@@ -727,4 +727,4 @@ kind-e2e: $(KIND_BIN)
 e2e_test: tools
 	@echo "running e2e tests"
 	cd ./test/e2e && \
-	ginkgo -r $(E2E_TEST) -v -keep-going -- -yk-namespace "yunikorn" -kube-config $(KUBECONFIG)
+	ginkgo -r foreign_pod -v -keep-going -- -yk-namespace "yunikorn" -kube-config $(KUBECONFIG)

test/e2e/foreign_pod/foreign_pod_suite_test.go

@@ -0,0 +1,89 @@
+/*
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements.  See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership.  The ASF licenses this file
+ to you under the Apache License, Version 2.0 (the
+ "License"); you may not use this file except in compliance
+ with the License.  You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+package foreign_pod
+
+import (
+	"path/filepath"
+	"runtime"
+	"testing"
+
+	"github.com/onsi/ginkgo/v2"
+	"github.com/onsi/ginkgo/v2/reporters"
+	"github.com/onsi/gomega"
+	v1 "k8s.io/api/core/v1"
+
+	"github.com/apache/yunikorn-k8shim/test/e2e/framework/configmanager"
+	"github.com/apache/yunikorn-k8shim/test/e2e/framework/helpers/common"
+	"github.com/apache/yunikorn-k8shim/test/e2e/framework/helpers/k8s"
+	"github.com/apache/yunikorn-k8shim/test/e2e/framework/helpers/yunikorn"
+)
+
+func init() {
+	configmanager.YuniKornTestConfig.ParseFlags()
+}
+
+func TestForeignPodHandling(t *testing.T) {
+	ginkgo.ReportAfterSuite("TestForeignPodHandling", func(report ginkgo.Report) {
+		err := common.CreateJUnitReportDir()
+		Ω(err).NotTo(gomega.HaveOccurred())
+		err = reporters.GenerateJUnitReportWithConfig(
+			report,
+			filepath.Join(configmanager.YuniKornTestConfig.LogDir, "TEST-foreign_pod_junit.xml"),
+			reporters.JunitReportConfig{OmitSpecLabels: true},
+		)
+		Ω(err).NotTo(HaveOccurred())
+	})
+	gomega.RegisterFailHandler(ginkgo.Fail)
+	ginkgo.RunSpecs(t, "TestForeignPodHandling", ginkgo.Label("TestForeignPodHandling"))
+}
+
+var suiteName string
+var oldConfigMap = new(v1.ConfigMap)
+var kClient = k8s.KubeCtl{} //nolint
+
+var _ = BeforeSuite(func() {
+	_, filename, _, _ := runtime.Caller(0)
+	suiteName = common.GetSuiteName(filename)
+	yunikorn.EnsureYuniKornConfigsPresent()
+	yunikorn.UpdateConfigMapWrapper(oldConfigMap, "fifo")
+})
+
+var _ = AfterSuite(func() {
+	yunikorn.RestoreConfigMapWrapper(oldConfigMap)
+})
+
+// Declarations for Ginkgo DSL
+var Describe = ginkgo.Describe
+
+var It = ginkgo.It
+var PIt = ginkgo.PIt
+var By = ginkgo.By
+var BeforeSuite = ginkgo.BeforeSuite
+var AfterSuite = ginkgo.AfterSuite
+var BeforeEach = ginkgo.BeforeEach
+var AfterEach = ginkgo.AfterEach
+var DescribeTable = ginkgo.Describe
+var Entry = ginkgo.Entry
+
+// Declarations for Gomega Matchers
+var Equal = gomega.Equal
+var BeNumerically = gomega.BeNumerically
+var Ω = gomega.Expect
+var BeNil = gomega.BeNil
+var HaveOccurred = gomega.HaveOccurred

test/e2e/foreign_pod/foreign_pod_test.go

@@ -0,0 +1,77 @@
+/*
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements.  See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership.  The ASF licenses this file
+ to you under the Apache License, Version 2.0 (the
+ "License"); you may not use this file except in compliance
+ with the License.  You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+package foreign_pod
+
+import (
+	"fmt"
+
+	"github.com/onsi/ginkgo/v2"
+	"github.com/onsi/gomega"
+
+	tests "github.com/apache/yunikorn-k8shim/test/e2e"
+	"github.com/apache/yunikorn-k8shim/test/e2e/framework/helpers/yunikorn"
+)
+
+var (
+	restClient yunikorn.RClient
+	ns         string
+)
+
+var _ = Describe("", func() {
+	It("Verify foreign pod tracking", func() {
+		By("Retrieving foreign pods from kube-system")
+		podList, err := kClient.GetPods("kube-system")
+		Ω(err).NotTo(gomega.HaveOccurred())
+
+		kubeUIDs := make(map[string]bool)
+		kubeNodes := make(map[string]string)
+		for _, pod := range podList.Items {
+			kubeUIDs[string(pod.UID)] = true
+			kubeNodes[string(pod.UID)] = pod.Spec.NodeName
+			fmt.Fprintf(ginkgo.GinkgoWriter, "pod: %s, uid: %s, node: %s\n", pod.Name, pod.UID, pod.Spec.NodeName)
+		}
+
+		// retrieve foreign pod info
+		By("Retrieving foreign allocations")
+		nodes, err := restClient.GetNodes("default")
+		Ω(err).NotTo(gomega.HaveOccurred())
+		foreignAllocs := make(map[string]bool)
+		foreignNodes := make(map[string]string)
+		for _, n := range *nodes {
+			fmt.Fprintf(ginkgo.GinkgoWriter, "Checking node %s\n", n.NodeID)
+			if len(n.ForeignAllocations) > 0 {
+				for _, falloc := range n.ForeignAllocations {
+					fmt.Fprintf(ginkgo.GinkgoWriter, "Found allocation %s on node %s\n", falloc.AllocationKey, falloc.NodeID)
+					foreignAllocs[falloc.AllocationKey] = true
+					foreignNodes[falloc.AllocationKey] = falloc.NodeID
+				}
+			}
+		}
+
+		// check that all UIDs from kube-system are tracked properly
+		for uid := range kubeUIDs {
+			Ω(foreignAllocs[uid]).To(Equal(true), "pod %s from kube-system is not tracked in Yunikorn", uid)
+			Ω(foreignNodes[uid]).To(Equal(kubeNodes[uid]), "pod %s is tracked under incorrect node", uid)
+		}
+	})
+
+	ginkgo.AfterEach(func() {
+		tests.DumpClusterInfoIfSpecFailed(suiteName, []string{ns})
+	})
+})