cri-o/vendor/cloud.google.com/go/logging/logging_test.go
Jacek J. Łakis bf51655a7b vendor: Update vendoring for the exec client and server implementations
Signed-off-by: Jacek J. Łakis <jacek.lakis@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-24 18:38:41 +02:00

509 lines
14 KiB
Go

// Copyright 2016 Google Inc. All Rights Reserved.
//
// Licensed 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.
// TODO(jba): test that OnError is getting called appropriately.
package logging_test
import (
"flag"
"fmt"
"log"
"os"
"reflect"
"strings"
"testing"
"time"
gax "github.com/googleapis/gax-go"
cinternal "cloud.google.com/go/internal"
"cloud.google.com/go/internal/testutil"
"cloud.google.com/go/logging"
"cloud.google.com/go/logging/internal"
ltesting "cloud.google.com/go/logging/internal/testing"
"cloud.google.com/go/logging/logadmin"
"golang.org/x/net/context"
"golang.org/x/oauth2"
"google.golang.org/api/iterator"
"google.golang.org/api/option"
mrpb "google.golang.org/genproto/googleapis/api/monitoredres"
"google.golang.org/grpc"
)
const testLogIDPrefix = "GO-LOGGING-CLIENT/TEST-LOG"
var (
client *logging.Client
aclient *logadmin.Client
testProjectID string
testLogID string
testFilter string
errorc chan error
ctx context.Context
// Adjust the fields of a FullEntry received from the production service
// before comparing it with the expected result. We can't correctly
// compare certain fields, like times or server-generated IDs.
clean func(*logging.Entry)
// Create a new client with the given project ID.
newClients func(ctx context.Context, projectID string) (*logging.Client, *logadmin.Client)
)
func testNow() time.Time {
return time.Unix(1000, 0)
}
// If true, this test is using the production service, not a fake.
var integrationTest bool
func TestMain(m *testing.M) {
flag.Parse() // needed for testing.Short()
ctx = context.Background()
testProjectID = testutil.ProjID()
errorc = make(chan error, 100)
if testProjectID == "" || testing.Short() {
integrationTest = false
if testProjectID != "" {
log.Print("Integration tests skipped in short mode (using fake instead)")
}
testProjectID = "PROJECT_ID"
clean = func(e *logging.Entry) {
// Remove the insert ID for consistency with the integration test.
e.InsertID = ""
}
addr, err := ltesting.NewServer()
if err != nil {
log.Fatalf("creating fake server: %v", err)
}
logging.SetNow(testNow)
newClients = func(ctx context.Context, projectID string) (*logging.Client, *logadmin.Client) {
conn, err := grpc.Dial(addr, grpc.WithInsecure())
if err != nil {
log.Fatalf("dialing %q: %v", addr, err)
}
c, err := logging.NewClient(ctx, projectID, option.WithGRPCConn(conn))
if err != nil {
log.Fatalf("creating client for fake at %q: %v", addr, err)
}
ac, err := logadmin.NewClient(ctx, projectID, option.WithGRPCConn(conn))
if err != nil {
log.Fatalf("creating client for fake at %q: %v", addr, err)
}
return c, ac
}
} else {
integrationTest = true
clean = func(e *logging.Entry) {
// We cannot compare timestamps, so set them to the test time.
// Also, remove the insert ID added by the service.
e.Timestamp = testNow().UTC()
e.InsertID = ""
}
ts := testutil.TokenSource(ctx, logging.AdminScope)
if ts == nil {
log.Fatal("The project key must be set. See CONTRIBUTING.md for details")
}
log.Printf("running integration tests with project %s", testProjectID)
newClients = func(ctx context.Context, projectID string) (*logging.Client, *logadmin.Client) {
c, err := logging.NewClient(ctx, projectID, option.WithTokenSource(ts))
if err != nil {
log.Fatalf("creating prod client: %v", err)
}
ac, err := logadmin.NewClient(ctx, projectID, option.WithTokenSource(ts))
if err != nil {
log.Fatalf("creating prod client: %v", err)
}
return c, ac
}
}
client, aclient = newClients(ctx, testProjectID)
client.OnError = func(e error) { errorc <- e }
exit := m.Run()
client.Close()
os.Exit(exit)
}
func initLogs(ctx context.Context) {
testLogID = ltesting.UniqueID(testLogIDPrefix)
testFilter = fmt.Sprintf(`logName = "projects/%s/logs/%s"`, testProjectID,
strings.Replace(testLogID, "/", "%2F", -1))
// TODO(jba): Clean up from previous aborted tests by deleting old logs; requires ListLogs RPC.
}
// Testing of Logger.Log is done in logadmin_test.go, TestEntries.
func TestLogSync(t *testing.T) {
initLogs(ctx) // Generate new testLogID
ctx := context.Background()
lg := client.Logger(testLogID)
err := lg.LogSync(ctx, logging.Entry{Payload: "hello"})
if err != nil {
t.Fatal(err)
}
err = lg.LogSync(ctx, logging.Entry{Payload: "goodbye"})
if err != nil {
t.Fatal(err)
}
// Allow overriding the MonitoredResource.
err = lg.LogSync(ctx, logging.Entry{Payload: "mr", Resource: &mrpb.MonitoredResource{Type: "global"}})
if err != nil {
t.Fatal(err)
}
want := []*logging.Entry{
entryForTesting("hello"),
entryForTesting("goodbye"),
entryForTesting("mr"),
}
var got []*logging.Entry
ok := waitFor(func() bool {
got, err = allTestLogEntries(ctx)
if err != nil {
t.Log("fetching log entries: ", err)
return false
}
return len(got) == len(want)
})
if !ok {
t.Fatalf("timed out; got: %d, want: %d\n", len(got), len(want))
}
if msg, ok := compareEntries(got, want); !ok {
t.Error(msg)
}
}
func TestLogAndEntries(t *testing.T) {
initLogs(ctx) // Generate new testLogID
ctx := context.Background()
payloads := []string{"p1", "p2", "p3", "p4", "p5"}
lg := client.Logger(testLogID)
for _, p := range payloads {
// Use the insert ID to guarantee iteration order.
lg.Log(logging.Entry{Payload: p, InsertID: p})
}
lg.Flush()
var want []*logging.Entry
for _, p := range payloads {
want = append(want, entryForTesting(p))
}
var got []*logging.Entry
ok := waitFor(func() bool {
var err error
got, err = allTestLogEntries(ctx)
if err != nil {
t.Log("fetching log entries: ", err)
return false
}
return len(got) == len(want)
})
if !ok {
t.Fatalf("timed out; got: %d, want: %d\n", len(got), len(want))
}
if msg, ok := compareEntries(got, want); !ok {
t.Error(msg)
}
}
// compareEntries compares most fields list of Entries against expected. compareEntries does not compare:
// - HTTPRequest
// - Operation
// - Resource
func compareEntries(got, want []*logging.Entry) (string, bool) {
if len(got) != len(want) {
return fmt.Sprintf("got %d entries, want %d", len(got), len(want)), false
}
for i := range got {
if !compareEntry(got[i], want[i]) {
return fmt.Sprintf("#%d:\ngot %+v\nwant %+v", i, got[i], want[i]), false
}
}
return "", true
}
func compareEntry(got, want *logging.Entry) bool {
if got.Timestamp.Unix() != want.Timestamp.Unix() {
return false
}
if got.Severity != want.Severity {
return false
}
if !reflect.DeepEqual(got.Payload, want.Payload) {
return false
}
if !reflect.DeepEqual(got.Labels, want.Labels) {
return false
}
if got.InsertID != want.InsertID {
return false
}
if got.LogName != want.LogName {
return false
}
return true
}
func entryForTesting(payload interface{}) *logging.Entry {
return &logging.Entry{
Timestamp: testNow().UTC(),
Payload: payload,
LogName: "projects/" + testProjectID + "/logs/" + testLogID,
Resource: &mrpb.MonitoredResource{Type: "global", Labels: map[string]string{"project_id": testProjectID}},
}
}
func countLogEntries(ctx context.Context, filter string) int {
it := aclient.Entries(ctx, logadmin.Filter(filter))
n := 0
for {
_, err := it.Next()
if err == iterator.Done {
return n
}
if err != nil {
log.Fatalf("counting log entries: %v", err)
}
n++
}
}
func allTestLogEntries(ctx context.Context) ([]*logging.Entry, error) {
var es []*logging.Entry
it := aclient.Entries(ctx, logadmin.Filter(testFilter))
for {
e, err := cleanNext(it)
switch err {
case nil:
es = append(es, e)
case iterator.Done:
return es, nil
default:
return nil, err
}
}
}
func cleanNext(it *logadmin.EntryIterator) (*logging.Entry, error) {
e, err := it.Next()
if err != nil {
return nil, err
}
clean(e)
return e, nil
}
func TestStandardLogger(t *testing.T) {
initLogs(ctx) // Generate new testLogID
ctx := context.Background()
lg := client.Logger(testLogID)
slg := lg.StandardLogger(logging.Info)
if slg != lg.StandardLogger(logging.Info) {
t.Error("There should be only one standard logger at each severity.")
}
if slg == lg.StandardLogger(logging.Debug) {
t.Error("There should be a different standard logger for each severity.")
}
slg.Print("info")
lg.Flush()
var got []*logging.Entry
ok := waitFor(func() bool {
var err error
got, err = allTestLogEntries(ctx)
if err != nil {
t.Log("fetching log entries: ", err)
return false
}
return len(got) == 1
})
if !ok {
t.Fatalf("timed out; got: %d, want: %d\n", len(got), 1)
}
if len(got) != 1 {
t.Fatalf("expected non-nil request with one entry; got:\n%+v", got)
}
if got, want := got[0].Payload.(string), "info\n"; got != want {
t.Errorf("payload: got %q, want %q", got, want)
}
if got, want := logging.Severity(got[0].Severity), logging.Info; got != want {
t.Errorf("severity: got %s, want %s", got, want)
}
}
func TestSeverity(t *testing.T) {
if got, want := logging.Info.String(), "Info"; got != want {
t.Errorf("got %q, want %q", got, want)
}
if got, want := logging.Severity(-99).String(), "-99"; got != want {
t.Errorf("got %q, want %q", got, want)
}
}
func TestParseSeverity(t *testing.T) {
for _, test := range []struct {
in string
want logging.Severity
}{
{"", logging.Default},
{"whatever", logging.Default},
{"Default", logging.Default},
{"ERROR", logging.Error},
{"Error", logging.Error},
{"error", logging.Error},
} {
got := logging.ParseSeverity(test.in)
if got != test.want {
t.Errorf("%q: got %s, want %s\n", test.in, got, test.want)
}
}
}
func TestErrors(t *testing.T) {
initLogs(ctx) // Generate new testLogID
// Drain errors already seen.
loop:
for {
select {
case <-errorc:
default:
break loop
}
}
// Try to log something that can't be JSON-marshalled.
lg := client.Logger(testLogID)
lg.Log(logging.Entry{Payload: func() {}})
// Expect an error.
select {
case <-errorc: // pass
case <-time.After(100 * time.Millisecond):
t.Fatal("expected an error but timed out")
}
}
type badTokenSource struct{}
func (badTokenSource) Token() (*oauth2.Token, error) {
return &oauth2.Token{}, nil
}
func TestPing(t *testing.T) {
// Ping twice, in case the service's InsertID logic messes with the error code.
ctx := context.Background()
// The global client should be valid.
if err := client.Ping(ctx); err != nil {
t.Errorf("project %s: got %v, expected nil", testProjectID, err)
}
if err := client.Ping(ctx); err != nil {
t.Errorf("project %s, #2: got %v, expected nil", testProjectID, err)
}
// nonexistent project
c, _ := newClients(ctx, testProjectID+"-BAD")
if err := c.Ping(ctx); err == nil {
t.Errorf("nonexistent project: want error pinging logging api, got nil")
}
if err := c.Ping(ctx); err == nil {
t.Errorf("nonexistent project, #2: want error pinging logging api, got nil")
}
// Bad creds. We cannot test this with the fake, since it doesn't do auth.
if integrationTest {
c, err := logging.NewClient(ctx, testProjectID, option.WithTokenSource(badTokenSource{}))
if err != nil {
t.Fatal(err)
}
if err := c.Ping(ctx); err == nil {
t.Errorf("bad creds: want error pinging logging api, got nil")
}
if err := c.Ping(ctx); err == nil {
t.Errorf("bad creds, #2: want error pinging logging api, got nil")
}
if err := c.Close(); err != nil {
t.Fatalf("error closing client: %v", err)
}
}
}
func TestDeleteLog(t *testing.T) {
initLogs(ctx) // Generate new testLogID
// Write some log entries.
ctx := context.Background()
payloads := []string{"p1", "p2"}
lg := client.Logger(testLogID)
for _, p := range payloads {
// Use the insert ID to guarantee iteration order.
lg.Log(logging.Entry{Payload: p, InsertID: p})
}
lg.Flush()
var got []*logging.Entry
ok := waitFor(func() bool {
var err error
got, err = allTestLogEntries(ctx)
if err != nil {
t.Log("fetching log entries: ", err)
return false
}
return len(got) == 2
})
if !ok {
t.Fatalf("timed out; got: %d, want: %d\n", len(got), 2)
}
// Sleep.
// Write timestamp uses client-provided timestamp, delete uses server
// timestamp. We sleep to reduce the possibility that the logs are never
// "deleted" because of clock skew.
// This is the recommended approach by Stackdriver team.
time.Sleep(3 * time.Second)
// Delete the log
err := aclient.DeleteLog(ctx, testLogID)
if err != nil {
log.Fatalf("error deleting log: %v", err)
}
// DeleteLog can take some time to happen, so we wait for the log to
// disappear. There is no direct way to determine if a log exists, so we
// just wait until there are no log entries associated with the ID.
filter := fmt.Sprintf(`logName = "%s"`, internal.LogPath("projects/"+testProjectID, testLogID))
ok = waitFor(func() bool { return countLogEntries(ctx, filter) == 0 })
if !ok {
t.Fatalf("timed out waiting for log entries to be deleted")
}
}
// waitFor calls f repeatedly with exponential backoff, blocking until it returns true.
// It returns false after a while (if it times out).
func waitFor(f func() bool) bool {
// TODO(shadams): Find a better way to deflake these tests.
ctx, cancel := context.WithTimeout(context.Background(), 2*time.Minute)
defer cancel()
err := cinternal.Retry(ctx,
gax.Backoff{Initial: time.Second, Multiplier: 2},
func() (bool, error) { return f(), nil })
return err == nil
}