services/keepstore/pull_worker_integration_test.go

   1 package main
   2
   3 import (
   4         "bytes"
   5         "errors"
   6         "io"
   7         "net/http"
   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                 Client:        &http.Client{},
  44         }
  45
  46         // discover keep services
  47         var servers []string
  48         if err := keepClient.DiscoverKeepServers(); err != nil {
  49                 t.Error("Error discovering keep services")
  50         }
  51         for _, host := range keepClient.LocalRoots() {
  52                 servers = append(servers, host)
  53         }
  54
  55         // Put content if the test needs it
  56         if wantData {
  57                 locator, _, err := keepClient.PutB([]byte(testData.Content))
  58                 if err != nil {
  59                         t.Errorf("Error putting test data in setup for %s %s %v", testData.Content, locator, err)
  60                 }
  61                 if locator == "" {
  62                         t.Errorf("No locator found after putting test data")
  63                 }
  64         }
  65
  66         // Create pullRequest for the test
  67         pullRequest := PullRequest{
  68                 Locator: testData.Locator,
  69                 Servers: servers,
  70         }
  71         return pullRequest
  72 }
  73
  74 // Do a get on a block that is not existing in any of the keep servers.
  75 // Expect "block not found" error.
  76 func TestPullWorkerIntegration_GetNonExistingLocator(t *testing.T) {
  77         testData := PullWorkIntegrationTestData{
  78                 Name:     "TestPullWorkerIntegration_GetLocator",
  79                 Locator:  "5d41402abc4b2a76b9719d911017c592",
  80                 Content:  "hello",
  81                 GetError: "Block not found",
  82         }
  83
  84         pullRequest := SetupPullWorkerIntegrationTest(t, testData, false)
  85         defer arvadostest.StopAPI()
  86         defer arvadostest.StopKeep(2)
  87
  88         performPullWorkerIntegrationTest(testData, pullRequest, t)
  89 }
  90
  91 // Do a get on a block that exists on one of the keep servers.
  92 // The setup method will create this block before doing the get.
  93 func TestPullWorkerIntegration_GetExistingLocator(t *testing.T) {
  94         testData := PullWorkIntegrationTestData{
  95                 Name:     "TestPullWorkerIntegration_GetLocator",
  96                 Locator:  "5d41402abc4b2a76b9719d911017c592",
  97                 Content:  "hello",
  98                 GetError: "",
  99         }
 100
 101         pullRequest := SetupPullWorkerIntegrationTest(t, testData, true)
 102         defer arvadostest.StopAPI()
 103         defer arvadostest.StopKeep(2)
 104
 105         performPullWorkerIntegrationTest(testData, pullRequest, t)
 106 }
 107
 108 // Perform the test.
 109 // The test directly invokes the "PullItemAndProcess" rather than
 110 // putting an item on the pullq so that the errors can be verified.
 111 func performPullWorkerIntegrationTest(testData PullWorkIntegrationTestData, pullRequest PullRequest, t *testing.T) {
 112
 113         // Override writePulledBlock to mock PutBlock functionality
 114         defer func(orig func(Volume, []byte, string)) { writePulledBlock = orig }(writePulledBlock)
 115         writePulledBlock = func(v Volume, content []byte, locator string) {
 116                 if string(content) != testData.Content {
 117                         t.Errorf("writePulledBlock invoked with unexpected data. Expected: %s; Found: %s", testData.Content, content)
 118                 }
 119         }
 120
 121         // Override GetContent to mock keepclient Get functionality
 122         defer func(orig func(string, *keepclient.KeepClient) (io.ReadCloser, int64, string, error)) {
 123                 GetContent = orig
 124         }(GetContent)
 125         GetContent = func(signedLocator string, keepClient *keepclient.KeepClient) (
 126                 reader io.ReadCloser, contentLength int64, url string, err error) {
 127                 if testData.GetError != "" {
 128                         return nil, 0, "", errors.New(testData.GetError)
 129                 }
 130                 rdr := &ClosingBuffer{bytes.NewBufferString(testData.Content)}
 131                 return rdr, int64(len(testData.Content)), "", nil
 132         }
 133
 134         err := PullItemAndProcess(pullRequest, keepClient)
 135
 136         if len(testData.GetError) > 0 {
 137                 if (err == nil) || (!strings.Contains(err.Error(), testData.GetError)) {
 138                         t.Errorf("Got error %v, expected %v", err, testData.GetError)
 139                 }
 140         } else {
 141                 if err != nil {
 142                         t.Errorf("Got error %v, expected nil", err)
 143                 }
 144         }
 145 }