services/keepstore/pull_worker_integration_test.go

   1 package main
   2
   3 import (
   4         "bytes"
   5         "errors"
   6         "io"
   7         "io/ioutil"
   8         "os"
   9         "strings"
  10         "testing"
  11
  12         "git.curoverse.com/arvados.git/sdk/go/arvadosclient"
  13         "git.curoverse.com/arvados.git/sdk/go/arvadostest"
  14         "git.curoverse.com/arvados.git/sdk/go/keepclient"
  15 )
  16
  17 var keepClient *keepclient.KeepClient
  18
  19 type PullWorkIntegrationTestData struct {
  20         Name     string
  21         Locator  string
  22         Content  string
  23         GetError string
  24 }
  25
  26 func SetupPullWorkerIntegrationTest(t *testing.T, testData PullWorkIntegrationTestData, wantData bool) PullRequest {
  27         os.Setenv("ARVADOS_API_HOST_INSECURE", "true")
  28
  29         // start api and keep servers
  30         arvadostest.StartAPI()
  31         arvadostest.StartKeep(2, false)
  32
  33         // make arvadosclient
  34         arv, err := arvadosclient.MakeArvadosClient()
  35         if err != nil {
  36                 t.Error("Error creating arv")
  37         }
  38
  39         // keep client
  40         keepClient = &keepclient.KeepClient{
  41                 Arvados:       arv,
  42                 Want_replicas: 1,
  43         }
  44
  45         // discover keep services
  46         var servers []string
  47         if err := keepClient.DiscoverKeepServers(); err != nil {
  48                 t.Error("Error discovering keep services")
  49         }
  50         for _, host := range keepClient.LocalRoots() {
  51                 servers = append(servers, host)
  52         }
  53
  54         // Put content if the test needs it
  55         if wantData {
  56                 locator, _, err := keepClient.PutB([]byte(testData.Content))
  57                 if err != nil {
  58                         t.Errorf("Error putting test data in setup for %s %s %v", testData.Content, locator, err)
  59                 }
  60                 if locator == "" {
  61                         t.Errorf("No locator found after putting test data")
  62                 }
  63         }
  64
  65         // Create pullRequest for the test
  66         pullRequest := PullRequest{
  67                 Locator: testData.Locator,
  68                 Servers: servers,
  69         }
  70         return pullRequest
  71 }
  72
  73 // Do a get on a block that is not existing in any of the keep servers.
  74 // Expect "block not found" error.
  75 func TestPullWorkerIntegration_GetNonExistingLocator(t *testing.T) {
  76         testData := PullWorkIntegrationTestData{
  77                 Name:     "TestPullWorkerIntegration_GetLocator",
  78                 Locator:  "5d41402abc4b2a76b9719d911017c592",
  79                 Content:  "hello",
  80                 GetError: "Block not found",
  81         }
  82
  83         pullRequest := SetupPullWorkerIntegrationTest(t, testData, false)
  84         defer arvadostest.StopAPI()
  85         defer arvadostest.StopKeep(2)
  86
  87         performPullWorkerIntegrationTest(testData, pullRequest, t)
  88 }
  89
  90 // Do a get on a block that exists on one of the keep servers.
  91 // The setup method will create this block before doing the get.
  92 func TestPullWorkerIntegration_GetExistingLocator(t *testing.T) {
  93         testData := PullWorkIntegrationTestData{
  94                 Name:     "TestPullWorkerIntegration_GetLocator",
  95                 Locator:  "5d41402abc4b2a76b9719d911017c592",
  96                 Content:  "hello",
  97                 GetError: "",
  98         }
  99
 100         pullRequest := SetupPullWorkerIntegrationTest(t, testData, true)
 101         defer arvadostest.StopAPI()
 102         defer arvadostest.StopKeep(2)
 103
 104         performPullWorkerIntegrationTest(testData, pullRequest, t)
 105 }
 106
 107 // Perform the test.
 108 // The test directly invokes the "PullItemAndProcess" rather than
 109 // putting an item on the pullq so that the errors can be verified.
 110 func performPullWorkerIntegrationTest(testData PullWorkIntegrationTestData, pullRequest PullRequest, t *testing.T) {
 111
 112         // Override writePulledBlock to mock PutBlock functionality
 113         defer func(orig func(Volume, []byte, string)) { writePulledBlock = orig }(writePulledBlock)
 114         writePulledBlock = func(v Volume, content []byte, locator string) {
 115                 if string(content) != testData.Content {
 116                         t.Errorf("writePulledBlock invoked with unexpected data. Expected: %s; Found: %s", testData.Content, content)
 117                 }
 118         }
 119
 120         // Override GetContent to mock keepclient Get functionality
 121         defer func(orig func(string, *keepclient.KeepClient) (io.ReadCloser, int64, string, error)) {
 122                 GetContent = orig
 123         }(GetContent)
 124         GetContent = func(signedLocator string, keepClient *keepclient.KeepClient) (reader io.ReadCloser, contentLength int64, url string, err error) {
 125                 if testData.GetError != "" {
 126                         return nil, 0, "", errors.New(testData.GetError)
 127                 }
 128                 rdr := ioutil.NopCloser(bytes.NewBufferString(testData.Content))
 129                 return rdr, int64(len(testData.Content)), "", nil
 130         }
 131
 132         err := PullItemAndProcess(pullRequest, keepClient)
 133
 134         if len(testData.GetError) > 0 {
 135                 if (err == nil) || (!strings.Contains(err.Error(), testData.GetError)) {
 136                         t.Errorf("Got error %v, expected %v", err, testData.GetError)
 137                 }
 138         } else {
 139                 if err != nil {
 140                         t.Errorf("Got error %v, expected nil", err)
 141                 }
 142         }
 143 }