mirror of https://github.com/minio/minio.git
517 lines
14 KiB
Go
517 lines
14 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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import (
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"context"
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"fmt"
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"io/ioutil"
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"os"
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"reflect"
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"sort"
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"strings"
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"testing"
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"time"
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)
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// Fixed volume name that could be used across tests
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const volume = "testvolume"
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// Test for filterMatchingPrefix.
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func TestFilterMatchingPrefix(t *testing.T) {
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entries := []string{"a", "aab", "ab", "abbbb", "zzz"}
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testCases := []struct {
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prefixEntry string
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result []string
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}{
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{
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// Empty prefix should match all entries.
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"",
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[]string{"a", "aab", "ab", "abbbb", "zzz"},
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},
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{
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"a",
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[]string{"a", "aab", "ab", "abbbb"},
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},
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{
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"aa",
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[]string{"aab"},
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},
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{
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// Does not match any of the entries.
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"c",
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[]string{},
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},
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}
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for i, testCase := range testCases {
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expected := testCase.result
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got := filterMatchingPrefix(entries, testCase.prefixEntry)
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if !reflect.DeepEqual(expected, got) {
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t.Errorf("Test %d : expected %v, got %v", i+1, expected, got)
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}
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}
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}
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// Helper function that creates a volume and files in it.
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func createNamespace(disk StorageAPI, volume string, files []string) error {
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// Make a volume.
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err := disk.MakeVol(context.Background(), volume)
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if err != nil {
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return err
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}
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// Create files.
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for _, file := range files {
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err = disk.AppendFile(context.Background(), volume, file, []byte{})
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if err != nil {
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return err
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}
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}
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return err
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}
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// Returns function "listDir" of the type listDirFunc.
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// disks - used for doing disk.ListDir()
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func listDirFactory(ctx context.Context, disk StorageAPI, isLeaf IsLeafFunc) ListDirFunc {
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return func(volume, dirPath, dirEntry string) (emptyDir bool, entries []string, delayIsLeaf bool) {
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entries, err := disk.ListDir(ctx, volume, dirPath, -1)
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if err != nil {
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return false, nil, false
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}
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if len(entries) == 0 {
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return true, nil, false
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}
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entries, delayIsLeaf = filterListEntries(volume, dirPath, entries, dirEntry, isLeaf)
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return false, entries, delayIsLeaf
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}
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}
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// Test if tree walker returns entries matching prefix alone are received
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// when a non empty prefix is supplied.
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func testTreeWalkPrefix(t *testing.T, listDir ListDirFunc, isLeaf IsLeafFunc, isLeafDir IsLeafDirFunc) {
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// Start the tree walk go-routine.
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prefix := "d/"
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endWalkCh := make(chan struct{})
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twResultCh := startTreeWalk(context.Background(), volume, prefix, "", true, listDir, isLeaf, isLeafDir, endWalkCh)
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// Check if all entries received on the channel match the prefix.
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for res := range twResultCh {
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if !HasPrefix(res.entry, prefix) {
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t.Errorf("Entry %s doesn't match prefix %s", res.entry, prefix)
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}
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}
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}
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// Test if entries received on tree walk's channel appear after the supplied marker.
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func testTreeWalkMarker(t *testing.T, listDir ListDirFunc, isLeaf IsLeafFunc, isLeafDir IsLeafDirFunc) {
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// Start the tree walk go-routine.
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prefix := ""
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endWalkCh := make(chan struct{})
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twResultCh := startTreeWalk(context.Background(), volume, prefix, "d/g", true, listDir, isLeaf, isLeafDir, endWalkCh)
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// Check if only 3 entries, namely d/g/h, i/j/k, lmn are received on the channel.
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expectedCount := 3
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actualCount := 0
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for range twResultCh {
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actualCount++
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}
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if expectedCount != actualCount {
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t.Errorf("Expected %d entries, actual no. of entries were %d", expectedCount, actualCount)
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}
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}
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// Test tree-walk.
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func TestTreeWalk(t *testing.T) {
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fsDir, err := ioutil.TempDir(globalTestTmpDir, "minio-")
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if err != nil {
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t.Fatalf("Unable to create tmp directory: %s", err)
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}
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defer os.RemoveAll(fsDir)
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endpoints := mustGetNewEndpoints(fsDir)
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disk, err := newStorageAPI(endpoints[0])
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if err != nil {
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t.Fatalf("Unable to create StorageAPI: %s", err)
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}
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files := []string{
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"d/e",
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"d/f",
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"d/g/h",
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"i/j/k",
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"lmn",
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}
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err = createNamespace(disk, volume, files)
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if err != nil {
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t.Fatal(err)
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}
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isLeaf := func(bucket, leafPath string) bool {
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return !strings.HasSuffix(leafPath, slashSeparator)
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}
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isLeafDir := func(bucket, leafPath string) bool {
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entries, _ := disk.ListDir(context.Background(), bucket, leafPath, 1)
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return len(entries) == 0
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}
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listDir := listDirFactory(context.Background(), disk, isLeaf)
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// Simple test for prefix based walk.
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testTreeWalkPrefix(t, listDir, isLeaf, isLeafDir)
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// Simple test when marker is set.
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testTreeWalkMarker(t, listDir, isLeaf, isLeafDir)
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}
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// Test if tree walk go-routine exits cleanly if tree walk is aborted because of timeout.
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func TestTreeWalkTimeout(t *testing.T) {
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fsDir, err := ioutil.TempDir(globalTestTmpDir, "minio-")
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if err != nil {
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t.Fatalf("Unable to create tmp directory: %s", err)
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}
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defer os.RemoveAll(fsDir)
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endpoints := mustGetNewEndpoints(fsDir)
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disk, err := newStorageAPI(endpoints[0])
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if err != nil {
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t.Fatalf("Unable to create StorageAPI: %s", err)
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}
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var myfiles []string
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// Create maxObjectsList+1 number of entries.
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for i := 0; i < maxObjectList+1; i++ {
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myfiles = append(myfiles, fmt.Sprintf("file.%d", i))
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}
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err = createNamespace(disk, volume, myfiles)
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if err != nil {
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t.Fatal(err)
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}
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isLeaf := func(bucket, leafPath string) bool {
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return !strings.HasSuffix(leafPath, slashSeparator)
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}
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isLeafDir := func(bucket, leafPath string) bool {
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entries, _ := disk.ListDir(context.Background(), bucket, leafPath, 1)
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return len(entries) == 0
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}
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listDir := listDirFactory(context.Background(), disk, isLeaf)
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// TreeWalk pool with 2 seconds timeout for tree-walk go routines.
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pool := NewTreeWalkPool(2 * time.Second)
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endWalkCh := make(chan struct{})
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prefix := ""
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marker := ""
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recursive := true
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resultCh := startTreeWalk(context.Background(), volume, prefix, marker, recursive, listDir, isLeaf, isLeafDir, endWalkCh)
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params := listParams{
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bucket: volume,
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recursive: recursive,
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}
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// Add Treewalk to the pool.
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pool.Set(params, resultCh, endWalkCh)
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// Wait for the Treewalk to timeout.
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<-time.After(3 * time.Second)
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// Read maxObjectList number of entries from the channel.
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// maxObjectsList number of entries would have been filled into the resultCh
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// buffered channel. After the timeout resultCh would get closed and hence the
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// maxObjectsList+1 entry would not be sent in the channel.
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i := 0
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for range resultCh {
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i++
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if i == maxObjectList {
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break
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}
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}
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// The last entry will not be received as the Treewalk goroutine would have exited.
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_, ok := <-resultCh
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if ok {
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t.Error("Tree-walk go routine has not exited after timeout.")
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}
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}
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// TestRecursiveWalk - tests if treeWalk returns entries correctly with and
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// without recursively traversing prefixes.
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func TestRecursiveTreeWalk(t *testing.T) {
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// Create a backend directories fsDir1.
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fsDir1, err := ioutil.TempDir(globalTestTmpDir, "minio-")
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if err != nil {
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t.Fatalf("Unable to create tmp directory: %s", err)
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}
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defer os.RemoveAll(fsDir1)
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endpoints := mustGetNewEndpoints(fsDir1)
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disk1, err := newStorageAPI(endpoints[0])
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if err != nil {
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t.Fatalf("Unable to create StorageAPI: %s", err)
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}
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isLeaf := func(bucket, leafPath string) bool {
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return !strings.HasSuffix(leafPath, slashSeparator)
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}
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isLeafDir := func(bucket, leafPath string) bool {
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entries, _ := disk1.ListDir(context.Background(), bucket, leafPath, 1)
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return len(entries) == 0
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}
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// Create listDir function.
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listDir := listDirFactory(context.Background(), disk1, isLeaf)
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// Create the namespace.
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files := []string{
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"d/e",
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"d/f",
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"d/g/h",
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"i/j/k",
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"lmn",
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}
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err = createNamespace(disk1, volume, files)
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if err != nil {
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t.Fatal(err)
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}
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endWalkCh := make(chan struct{})
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testCases := []struct {
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prefix string
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marker string
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recursive bool
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expected map[string]struct{}
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}{
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// with no prefix, no marker and no recursive traversal
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{"", "", false, map[string]struct{}{
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"d/": {},
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"i/": {},
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"lmn": {},
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}},
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// with no prefix, no marker and recursive traversal
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{"", "", true, map[string]struct{}{
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"d/f": {},
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"d/g/h": {},
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"d/e": {},
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"i/j/k": {},
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"lmn": {},
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}},
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// with no prefix, marker and no recursive traversal
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{"", "d/e", false, map[string]struct{}{
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"d/f": {},
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"d/g/": {},
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"i/": {},
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"lmn": {},
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}},
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// with no prefix, marker and recursive traversal
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{"", "d/e", true, map[string]struct{}{
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"d/f": {},
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"d/g/h": {},
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"i/j/k": {},
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"lmn": {},
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}},
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// with prefix, no marker and no recursive traversal
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{"d/", "", false, map[string]struct{}{
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"d/e": {},
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"d/f": {},
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"d/g/": {},
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}},
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// with prefix, no marker and no recursive traversal
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{"d/", "", true, map[string]struct{}{
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"d/e": {},
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"d/f": {},
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"d/g/h": {},
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}},
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// with prefix, marker and no recursive traversal
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{"d/", "d/e", false, map[string]struct{}{
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"d/f": {},
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"d/g/": {},
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}},
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// with prefix, marker and recursive traversal
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{"d/", "d/e", true, map[string]struct{}{
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"d/f": {},
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"d/g/h": {},
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}},
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}
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for i, testCase := range testCases {
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testCase := testCase
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t.Run(fmt.Sprintf("Test%d", i+1), func(t *testing.T) {
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for entry := range startTreeWalk(context.Background(), volume,
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testCase.prefix, testCase.marker, testCase.recursive,
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listDir, isLeaf, isLeafDir, endWalkCh) {
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if _, found := testCase.expected[entry.entry]; !found {
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t.Errorf("Expected %s, but couldn't find", entry.entry)
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}
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}
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})
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}
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}
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func TestSortedness(t *testing.T) {
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// Create a backend directories fsDir1.
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fsDir1, err := ioutil.TempDir(globalTestTmpDir, "minio-")
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if err != nil {
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t.Errorf("Unable to create tmp directory: %s", err)
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}
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defer os.RemoveAll(fsDir1)
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endpoints := mustGetNewEndpoints(fsDir1)
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disk1, err := newStorageAPI(endpoints[0])
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if err != nil {
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t.Fatalf("Unable to create StorageAPI: %s", err)
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}
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isLeaf := func(bucket, leafPath string) bool {
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return !strings.HasSuffix(leafPath, slashSeparator)
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}
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isLeafDir := func(bucket, leafPath string) bool {
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entries, _ := disk1.ListDir(context.Background(), bucket, leafPath, 1)
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return len(entries) == 0
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}
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// Create listDir function.
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listDir := listDirFactory(context.Background(), disk1, isLeaf)
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// Create the namespace.
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files := []string{
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"d/e",
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"d/f",
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"d/g/h",
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"i/j/k",
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"lmn",
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}
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err = createNamespace(disk1, volume, files)
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if err != nil {
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t.Fatal(err)
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}
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endWalkCh := make(chan struct{})
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testCases := []struct {
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prefix string
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marker string
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recursive bool
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}{
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// with no prefix, no marker and no recursive traversal
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{"", "", false},
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// with no prefix, no marker and recursive traversal
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{"", "", true},
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// with no prefix, marker and no recursive traversal
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{"", "d/e", false},
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// with no prefix, marker and recursive traversal
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{"", "d/e", true},
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// with prefix, no marker and no recursive traversal
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{"d/", "", false},
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// with prefix, no marker and no recursive traversal
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{"d/", "", true},
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// with prefix, marker and no recursive traversal
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{"d/", "d/e", false},
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// with prefix, marker and recursive traversal
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{"d/", "d/e", true},
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}
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for i, test := range testCases {
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var actualEntries []string
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for entry := range startTreeWalk(context.Background(), volume,
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test.prefix, test.marker, test.recursive,
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listDir, isLeaf, isLeafDir, endWalkCh) {
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actualEntries = append(actualEntries, entry.entry)
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}
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if !sort.IsSorted(sort.StringSlice(actualEntries)) {
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t.Error(i+1, "Expected entries to be sort, but it wasn't")
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}
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}
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}
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func TestTreeWalkIsEnd(t *testing.T) {
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// Create a backend directories fsDir1.
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fsDir1, err := ioutil.TempDir(globalTestTmpDir, "minio-")
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if err != nil {
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t.Errorf("Unable to create tmp directory: %s", err)
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}
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defer os.RemoveAll(fsDir1)
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endpoints := mustGetNewEndpoints(fsDir1)
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disk1, err := newStorageAPI(endpoints[0])
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if err != nil {
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t.Fatalf("Unable to create StorageAPI: %s", err)
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}
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isLeaf := func(bucket, leafPath string) bool {
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return !strings.HasSuffix(leafPath, slashSeparator)
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}
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isLeafDir := func(bucket, leafPath string) bool {
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entries, _ := disk1.ListDir(context.Background(), bucket, leafPath, 1)
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return len(entries) == 0
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}
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// Create listDir function.
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listDir := listDirFactory(context.Background(), disk1, isLeaf)
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// Create the namespace.
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files := []string{
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"d/e",
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"d/f",
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"d/g/h",
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"i/j/k",
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"lmn",
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}
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err = createNamespace(disk1, volume, files)
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if err != nil {
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t.Fatal(err)
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}
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endWalkCh := make(chan struct{})
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testCases := []struct {
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prefix string
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marker string
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recursive bool
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expectedEntry string
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}{
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// with no prefix, no marker and no recursive traversal
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{"", "", false, "lmn"},
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// with no prefix, no marker and recursive traversal
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{"", "", true, "lmn"},
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// with no prefix, marker and no recursive traversal
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{"", "d/e", false, "lmn"},
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// with no prefix, marker and recursive traversal
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{"", "d/e", true, "lmn"},
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// with prefix, no marker and no recursive traversal
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{"d/", "", false, "d/g/"},
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// with prefix, no marker and no recursive traversal
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{"d/", "", true, "d/g/h"},
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// with prefix, marker and no recursive traversal
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{"d/", "d/e", false, "d/g/"},
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// with prefix, marker and recursive traversal
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{"d/", "d/e", true, "d/g/h"},
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}
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for i, test := range testCases {
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var entry TreeWalkResult
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for entry = range startTreeWalk(context.Background(), volume, test.prefix,
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test.marker, test.recursive, listDir, isLeaf, isLeafDir, endWalkCh) {
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}
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if entry.entry != test.expectedEntry {
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t.Errorf("Test %d: Expected entry %s, but received %s with the EOF marker", i, test.expectedEntry, entry.entry)
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}
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if !entry.end {
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t.Errorf("Test %d: Last entry %s, doesn't have EOF marker set", i, entry.entry)
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}
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}
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}
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