274 lines
9.3 KiB
Go
274 lines
9.3 KiB
Go
package csi
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import (
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"fmt"
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"time"
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"github.com/hashicorp/nomad/e2e/e2eutil"
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"github.com/hashicorp/nomad/e2e/framework"
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"github.com/hashicorp/nomad/helper/uuid"
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"github.com/hashicorp/nomad/testutil"
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)
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// CSIControllerPluginEBSTest exercises the AWS EBS plugin, which is an
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// example of a plugin that supports most of the CSI Controller RPCs.
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type CSIControllerPluginEBSTest struct {
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framework.TC
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uuid string
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testJobIDs []string
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volumeIDs []string
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pluginJobIDs []string
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nodeIDs []string
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}
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const ebsPluginID = "aws-ebs0"
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// BeforeAll waits for the cluster to be ready, deploys the CSI plugins, and
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// creates two EBS volumes for use in the test.
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func (tc *CSIControllerPluginEBSTest) BeforeAll(f *framework.F) {
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e2eutil.WaitForLeader(f.T(), tc.Nomad())
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e2eutil.WaitForNodesReady(f.T(), tc.Nomad(), 2)
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tc.uuid = uuid.Generate()[0:8]
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// deploy the controller plugin job
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controllerJobID := "aws-ebs-plugin-controller-" + tc.uuid
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f.NoError(e2eutil.Register(controllerJobID, "csi/input/plugin-aws-ebs-controller.nomad"))
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tc.pluginJobIDs = append(tc.pluginJobIDs, controllerJobID)
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expected := []string{"running", "running"}
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f.NoError(
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e2eutil.WaitForAllocStatusExpected(controllerJobID, ns, expected),
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"job should be running")
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// deploy the node plugins job
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nodesJobID := "aws-ebs-plugin-nodes-" + tc.uuid
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f.NoError(e2eutil.Register(nodesJobID, "csi/input/plugin-aws-ebs-nodes.nomad"))
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tc.pluginJobIDs = append(tc.pluginJobIDs, nodesJobID)
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f.NoError(e2eutil.WaitForAllocStatusComparison(
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func() ([]string, error) { return e2eutil.AllocStatuses(nodesJobID, ns) },
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func(got []string) bool {
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for _, status := range got {
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if status != "running" {
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return false
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}
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}
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return true
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}, nil,
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))
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f.NoError(waitForPluginStatusControllerCount(ebsPluginID, 2, pluginWait),
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"aws-ebs0 controller plugins did not become healthy")
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f.NoError(waitForPluginStatusMinNodeCount(ebsPluginID, 2, pluginWait),
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"aws-ebs0 node plugins did not become healthy")
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// ideally we'd wait until after we check `nomad volume status -verbose`
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// to verify these volumes are ready, but the plugin doesn't support the
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// CSI ListVolumes RPC
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volID := "ebs-vol[0]"
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err := volumeRegister(volID, "csi/input/ebs-volume0.hcl", "create")
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requireNoErrorElseDump(f, err, "could not create volume", tc.pluginJobIDs)
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tc.volumeIDs = append(tc.volumeIDs, volID)
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volID = "ebs-vol[1]"
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err = volumeRegister(volID, "csi/input/ebs-volume1.hcl", "create")
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requireNoErrorElseDump(f, err, "could not create volume", tc.pluginJobIDs)
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tc.volumeIDs = append(tc.volumeIDs, volID)
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}
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func (tc *CSIControllerPluginEBSTest) AfterEach(f *framework.F) {
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// Ensure nodes are all restored
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for _, id := range tc.nodeIDs {
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_, err := e2eutil.Command("nomad", "node", "drain", "-disable", "-yes", id)
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f.Assert().NoError(err)
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_, err = e2eutil.Command("nomad", "node", "eligibility", "-enable", id)
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f.Assert().NoError(err)
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}
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tc.nodeIDs = []string{}
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// Stop all jobs in test
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for _, id := range tc.testJobIDs {
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err := e2eutil.StopJob(id, "-purge")
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f.Assert().NoError(err)
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}
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tc.testJobIDs = []string{}
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// Garbage collect
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out, err := e2eutil.Command("nomad", "system", "gc")
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f.Assert().NoError(err, out)
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}
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// AfterAll cleans up the volumes and plugin jobs created by the test.
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func (tc *CSIControllerPluginEBSTest) AfterAll(f *framework.F) {
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for _, volID := range tc.volumeIDs {
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err := waitForVolumeClaimRelease(volID, reapWait)
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f.Assert().NoError(err, "volume claims were not released")
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out, err := e2eutil.Command("nomad", "volume", "delete", volID)
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assertNoErrorElseDump(f, err,
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fmt.Sprintf("could not delete volume:\n%v", out), tc.pluginJobIDs)
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}
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// Deregister all plugin jobs in test
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for _, id := range tc.pluginJobIDs {
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err := e2eutil.StopJob(id, "-purge")
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f.Assert().NoError(err)
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}
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tc.pluginJobIDs = []string{}
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// Garbage collect
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out, err := e2eutil.Command("nomad", "system", "gc")
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f.Assert().NoError(err, out)
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}
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// TestVolumeClaim exercises the volume publish/unpublish workflows for the
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// EBS plugin.
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func (tc *CSIControllerPluginEBSTest) TestVolumeClaim(f *framework.F) {
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nomadClient := tc.Nomad()
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// deploy a job that writes to the volume
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writeJobID := "write-ebs-" + tc.uuid
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f.NoError(e2eutil.Register(writeJobID, "csi/input/use-ebs-volume.nomad"))
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f.NoError(
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e2eutil.WaitForAllocStatusExpected(writeJobID, ns, []string{"running"}),
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"job should be running")
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allocs, err := e2eutil.AllocsForJob(writeJobID, ns)
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f.NoError(err, "could not get allocs for write job")
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f.Len(allocs, 1, "could not get allocs for write job")
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writeAllocID := allocs[0]["ID"]
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// read data from volume and assert the writer wrote a file to it
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expectedPath := "/task/test/" + writeAllocID
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_, err = readFile(nomadClient, writeAllocID, expectedPath)
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f.NoError(err)
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// Shutdown (and purge) the writer so we can run a reader.
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// we could mount the EBS volume with multi-attach, but we
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// want this test to exercise the unpublish workflow.
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err = e2eutil.StopJob(writeJobID, "-purge")
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f.NoError(err)
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// wait for the volume unpublish workflow to complete
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for _, volID := range tc.volumeIDs {
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err := waitForVolumeClaimRelease(volID, reapWait)
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f.NoError(err, "volume claims were not released")
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}
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// deploy a job so we can read from the volume
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readJobID := "read-ebs-" + tc.uuid
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tc.testJobIDs = append(tc.testJobIDs, readJobID) // ensure failed tests clean up
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f.NoError(e2eutil.Register(readJobID, "csi/input/use-ebs-volume.nomad"))
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f.NoError(
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e2eutil.WaitForAllocStatusExpected(readJobID, ns, []string{"running"}),
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"job should be running")
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allocs, err = e2eutil.AllocsForJob(readJobID, ns)
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f.NoError(err, "could not get allocs for read job")
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f.Len(allocs, 1, "could not get allocs for read job")
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readAllocID := allocs[0]["ID"]
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// read data from volume and assert we can read the file the writer wrote
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expectedPath = "/task/test/" + readAllocID
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_, err = readFile(nomadClient, readAllocID, expectedPath)
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f.NoError(err)
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}
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// TestSnapshot exercises the snapshot commands.
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func (tc *CSIControllerPluginEBSTest) TestSnapshot(f *framework.F) {
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out, err := e2eutil.Command("nomad", "volume", "snapshot", "create",
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tc.volumeIDs[0], "snap-"+tc.uuid)
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requireNoErrorElseDump(f, err, "could not create volume snapshot", tc.pluginJobIDs)
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snaps, err := e2eutil.ParseColumns(out)
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defer func() {
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_, err := e2eutil.Command("nomad", "volume", "snapshot", "delete",
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ebsPluginID, snaps[0]["Snapshot ID"])
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requireNoErrorElseDump(f, err, "could not delete volume snapshot", tc.pluginJobIDs)
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}()
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f.NoError(err, fmt.Sprintf("could not parse output:\n%v", out))
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f.Len(snaps, 1, fmt.Sprintf("could not parse output:\n%v", out))
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// the snapshot we're looking for should be the first one because
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// we just created it, but give us some breathing room to allow
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// for concurrent test runs
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out, err = e2eutil.Command("nomad", "volume", "snapshot", "list",
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"-plugin", ebsPluginID, "-per-page", "10")
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requireNoErrorElseDump(f, err, "could not list volume snapshots", tc.pluginJobIDs)
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f.Contains(out, snaps[0]["ID"],
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fmt.Sprintf("volume snapshot list did not include expected snapshot:\n%v", out))
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}
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// TestNodeDrain exercises the remounting behavior in the face of a node drain
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func (tc *CSIControllerPluginEBSTest) TestNodeDrain(f *framework.F) {
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nomadClient := tc.Nomad()
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nodesJobID := "aws-ebs-plugin-nodes-" + tc.uuid
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pluginAllocs, err := e2eutil.AllocsForJob(nodesJobID, ns)
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f.NoError(err)
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expectedHealthyNodePlugins := len(pluginAllocs)
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// deploy a job that writes to the volume
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writeJobID := "write-ebs-for-drain" + tc.uuid
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f.NoError(e2eutil.Register(writeJobID, "csi/input/use-ebs-volume.nomad"))
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f.NoError(
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e2eutil.WaitForAllocStatusExpected(writeJobID, ns, []string{"running"}),
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"job should be running")
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tc.testJobIDs = append(tc.testJobIDs, writeJobID) // ensure failed tests clean up
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allocs, err := e2eutil.AllocsForJob(writeJobID, ns)
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f.NoError(err, "could not get allocs for write job")
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f.Len(allocs, 1, "could not get allocs for write job")
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writeAllocID := allocs[0]["ID"]
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// read data from volume and assert the writer wrote a file to it
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expectedPath := "/task/test/" + writeAllocID
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_, err = readFile(nomadClient, writeAllocID, expectedPath)
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f.NoError(err)
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// intentionally set a long deadline so we can check the plugins
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// haven't been moved
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nodeID := allocs[0]["Node ID"]
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out, err := e2eutil.Command("nomad", "node",
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"drain", "-enable",
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"-deadline", "10m",
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"-yes", "-detach", nodeID)
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f.NoError(err, fmt.Sprintf("'nomad node drain' failed: %v\n%v", err, out))
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tc.nodeIDs = append(tc.nodeIDs, nodeID)
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wc := &e2eutil.WaitConfig{}
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interval, retries := wc.OrDefault()
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testutil.WaitForResultRetries(retries, func() (bool, error) {
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time.Sleep(interval)
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allocs, err := e2eutil.AllocsForJob(writeJobID, ns)
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if err != nil {
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return false, err
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}
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for _, alloc := range allocs {
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if alloc["ID"] != writeAllocID {
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if alloc["Status"] == "running" {
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return true, nil
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}
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if alloc["Status"] == "failed" {
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// no point in waiting anymore if we hit this case
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f.T().Fatal("expected replacement alloc not to fail")
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}
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}
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}
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return false, fmt.Errorf("expected replacement alloc to be running")
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}, func(e error) {
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err = e
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})
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pluginAllocs, err = e2eutil.AllocsForJob(nodesJobID, ns)
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f.Lenf(pluginAllocs, expectedHealthyNodePlugins,
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"expected node plugins to be unchanged, got: %v", pluginAllocs)
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}
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