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mirror of https://github.com/rclone/rclone synced 2024-11-01 21:49:35 +01:00
rclone/vfs/cache_test.go
2019-02-02 16:26:55 +00:00

625 lines
16 KiB
Go

package vfs
import (
"context"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"sort"
"testing"
"time"
"github.com/djherbis/times"
"github.com/ncw/rclone/fstest"
"github.com/spf13/pflag"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
// Check CacheMode it satisfies the pflag interface
var _ pflag.Value = (*CacheMode)(nil)
func TestCacheModeString(t *testing.T) {
assert.Equal(t, "off", CacheModeOff.String())
assert.Equal(t, "full", CacheModeFull.String())
assert.Equal(t, "CacheMode(17)", CacheMode(17).String())
}
func TestCacheModeSet(t *testing.T) {
var m CacheMode
err := m.Set("full")
assert.NoError(t, err)
assert.Equal(t, CacheModeFull, m)
err = m.Set("potato")
assert.Error(t, err, "Unknown cache mode level")
err = m.Set("")
assert.Error(t, err, "Unknown cache mode level")
}
func TestCacheModeType(t *testing.T) {
var m CacheMode
assert.Equal(t, "string", m.Type())
}
// convert c.item to a string
func itemAsString(c *cache) []string {
c.itemMu.Lock()
defer c.itemMu.Unlock()
var out []string
for name, item := range c.item {
out = append(out, fmt.Sprintf("name=%q isFile=%v opens=%d size=%d", name, item.isFile, item.opens, item.size))
}
sort.Strings(out)
return out
}
func TestCacheNew(t *testing.T) {
r := fstest.NewRun(t)
defer r.Finalise()
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Disable the cache cleaner as it interferes with these tests
opt := DefaultOpt
opt.CachePollInterval = 0
c, err := newCache(ctx, r.Fremote, &opt)
require.NoError(t, err)
assert.Contains(t, c.root, "vfs")
assert.Contains(t, c.f.Root(), filepath.Base(r.Fremote.Root()))
assert.Equal(t, []string(nil), itemAsString(c))
// mkdir
p, err := c.mkdir("potato")
require.NoError(t, err)
assert.Equal(t, "potato", filepath.Base(p))
assert.Equal(t, []string{
`name="" isFile=false opens=0 size=0`,
}, itemAsString(c))
fi, err := os.Stat(filepath.Dir(p))
require.NoError(t, err)
assert.True(t, fi.IsDir())
// get
item := c.get("potato")
item2 := c.get("potato")
assert.Equal(t, item, item2)
assert.WithinDuration(t, time.Now(), item.atime, time.Second)
// updateTime
//.. before
t1 := time.Now().Add(-60 * time.Minute)
c.updateStat("potato", t1, 0)
item = c.get("potato")
assert.NotEqual(t, t1, item.atime)
assert.Equal(t, 0, item.opens)
//..after
t2 := time.Now().Add(60 * time.Minute)
c.updateStat("potato", t2, 0)
item = c.get("potato")
assert.Equal(t, t2, item.atime)
assert.Equal(t, 0, item.opens)
// open
assert.Equal(t, []string{
`name="" isFile=false opens=0 size=0`,
`name="potato" isFile=true opens=0 size=0`,
}, itemAsString(c))
c.open("/potato")
assert.Equal(t, []string{
`name="" isFile=false opens=1 size=0`,
`name="potato" isFile=true opens=1 size=0`,
}, itemAsString(c))
item = c.get("potato")
assert.WithinDuration(t, time.Now(), item.atime, time.Second)
assert.Equal(t, 1, item.opens)
// write the file
err = ioutil.WriteFile(p, []byte("hello"), 0600)
require.NoError(t, err)
// read its atime
fi, err = os.Stat(p)
assert.NoError(t, err)
atime := times.Get(fi).AccessTime()
// updateAtimes
item = c.get("potato")
item.atime = time.Now().Add(-24 * time.Hour)
err = c.updateStats()
require.NoError(t, err)
assert.Equal(t, []string{
`name="" isFile=false opens=1 size=0`,
`name="potato" isFile=true opens=1 size=5`,
}, itemAsString(c))
item = c.get("potato")
assert.Equal(t, atime, item.atime)
// updateAtimes - not in the cache
oldItem := item
c.itemMu.Lock()
delete(c.item, "potato") // remove from cache
c.itemMu.Unlock()
err = c.updateStats()
require.NoError(t, err)
assert.Equal(t, []string{
`name="" isFile=false opens=1 size=0`,
`name="potato" isFile=true opens=0 size=5`,
}, itemAsString(c))
item = c.get("potato")
assert.Equal(t, atime, item.atime)
c.itemMu.Lock()
c.item["potato"] = oldItem // restore to cache
c.itemMu.Unlock()
// try purging with file open
c.purgeOld(10 * time.Second)
_, err = os.Stat(p)
assert.NoError(t, err)
// close
assert.Equal(t, []string{
`name="" isFile=false opens=1 size=0`,
`name="potato" isFile=true opens=1 size=5`,
}, itemAsString(c))
c.updateStat("potato", t2, 6)
assert.Equal(t, []string{
`name="" isFile=false opens=1 size=0`,
`name="potato" isFile=true opens=1 size=6`,
}, itemAsString(c))
c.close("potato/")
assert.Equal(t, []string{
`name="" isFile=false opens=0 size=0`,
`name="potato" isFile=true opens=0 size=5`,
}, itemAsString(c))
item = c.get("potato")
assert.WithinDuration(t, time.Now(), item.atime, time.Second)
assert.Equal(t, 0, item.opens)
// try purging with file closed
c.purgeOld(10 * time.Second)
// ...nothing should happend
_, err = os.Stat(p)
assert.NoError(t, err)
//.. purge again with -ve age
c.purgeOld(-10 * time.Second)
_, err = os.Stat(p)
assert.True(t, os.IsNotExist(err))
// clean - have tested the internals already
c.clean()
// cleanup
err = c.cleanUp()
require.NoError(t, err)
_, err = os.Stat(c.root)
assert.True(t, os.IsNotExist(err))
}
func TestCacheOpens(t *testing.T) {
r := fstest.NewRun(t)
defer r.Finalise()
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
c, err := newCache(ctx, r.Fremote, &DefaultOpt)
require.NoError(t, err)
assert.Equal(t, []string(nil), itemAsString(c))
c.open("potato")
assert.Equal(t, []string{
`name="" isFile=false opens=1 size=0`,
`name="potato" isFile=true opens=1 size=0`,
}, itemAsString(c))
c.open("potato")
assert.Equal(t, []string{
`name="" isFile=false opens=2 size=0`,
`name="potato" isFile=true opens=2 size=0`,
}, itemAsString(c))
c.close("potato")
assert.Equal(t, []string{
`name="" isFile=false opens=1 size=0`,
`name="potato" isFile=true opens=1 size=0`,
}, itemAsString(c))
c.close("potato")
assert.Equal(t, []string{
`name="" isFile=false opens=0 size=0`,
`name="potato" isFile=true opens=0 size=0`,
}, itemAsString(c))
c.open("potato")
c.open("a//b/c/d/one")
c.open("a/b/c/d/e/two")
c.open("a/b/c/d/e/f/three")
assert.Equal(t, []string{
`name="" isFile=false opens=4 size=0`,
`name="a" isFile=false opens=3 size=0`,
`name="a/b" isFile=false opens=3 size=0`,
`name="a/b/c" isFile=false opens=3 size=0`,
`name="a/b/c/d" isFile=false opens=3 size=0`,
`name="a/b/c/d/e" isFile=false opens=2 size=0`,
`name="a/b/c/d/e/f" isFile=false opens=1 size=0`,
`name="a/b/c/d/e/f/three" isFile=true opens=1 size=0`,
`name="a/b/c/d/e/two" isFile=true opens=1 size=0`,
`name="a/b/c/d/one" isFile=true opens=1 size=0`,
`name="potato" isFile=true opens=1 size=0`,
}, itemAsString(c))
c.close("potato")
c.close("a/b/c/d/one")
c.close("a/b/c/d/e/two")
c.close("a/b/c//d/e/f/three")
assert.Equal(t, []string{
`name="" isFile=false opens=0 size=0`,
`name="a" isFile=false opens=0 size=0`,
`name="a/b" isFile=false opens=0 size=0`,
`name="a/b/c" isFile=false opens=0 size=0`,
`name="a/b/c/d" isFile=false opens=0 size=0`,
`name="a/b/c/d/e" isFile=false opens=0 size=0`,
`name="a/b/c/d/e/f" isFile=false opens=0 size=0`,
`name="a/b/c/d/e/f/three" isFile=true opens=0 size=0`,
`name="a/b/c/d/e/two" isFile=true opens=0 size=0`,
`name="a/b/c/d/one" isFile=true opens=0 size=0`,
`name="potato" isFile=true opens=0 size=0`,
}, itemAsString(c))
}
// test the open, mkdir, purge, close, purge sequence
func TestCacheOpenMkdir(t *testing.T) {
r := fstest.NewRun(t)
defer r.Finalise()
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Disable the cache cleaner as it interferes with these tests
opt := DefaultOpt
opt.CachePollInterval = 0
c, err := newCache(ctx, r.Fremote, &opt)
require.NoError(t, err)
// open
c.open("sub/potato")
assert.Equal(t, []string{
`name="" isFile=false opens=1 size=0`,
`name="sub" isFile=false opens=1 size=0`,
`name="sub/potato" isFile=true opens=1 size=0`,
}, itemAsString(c))
// mkdir
p, err := c.mkdir("sub/potato")
require.NoError(t, err)
assert.Equal(t, "potato", filepath.Base(p))
assert.Equal(t, []string{
`name="" isFile=false opens=1 size=0`,
`name="sub" isFile=false opens=1 size=0`,
`name="sub/potato" isFile=true opens=1 size=0`,
}, itemAsString(c))
// test directory exists
fi, err := os.Stat(filepath.Dir(p))
require.NoError(t, err)
assert.True(t, fi.IsDir())
// clean the cache
c.purgeOld(-10 * time.Second)
// test directory still exists
fi, err = os.Stat(filepath.Dir(p))
require.NoError(t, err)
assert.True(t, fi.IsDir())
// close
c.close("sub/potato")
assert.Equal(t, []string{
`name="" isFile=false opens=0 size=0`,
`name="sub" isFile=false opens=0 size=0`,
`name="sub/potato" isFile=true opens=0 size=0`,
}, itemAsString(c))
// clean the cache
c.purgeOld(-10 * time.Second)
c.purgeEmptyDirs()
assert.Equal(t, []string(nil), itemAsString(c))
// test directory does not exist
fi, err = os.Stat(filepath.Dir(p))
require.True(t, os.IsNotExist(err))
}
func TestCacheCacheDir(t *testing.T) {
r := fstest.NewRun(t)
defer r.Finalise()
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
c, err := newCache(ctx, r.Fremote, &DefaultOpt)
require.NoError(t, err)
assert.Equal(t, []string(nil), itemAsString(c))
c.cacheDir("dir")
assert.Equal(t, []string{
`name="" isFile=false opens=0 size=0`,
`name="dir" isFile=false opens=0 size=0`,
}, itemAsString(c))
c.cacheDir("dir/sub")
assert.Equal(t, []string{
`name="" isFile=false opens=0 size=0`,
`name="dir" isFile=false opens=0 size=0`,
`name="dir/sub" isFile=false opens=0 size=0`,
}, itemAsString(c))
c.cacheDir("dir/sub2/subsub2")
assert.Equal(t, []string{
`name="" isFile=false opens=0 size=0`,
`name="dir" isFile=false opens=0 size=0`,
`name="dir/sub" isFile=false opens=0 size=0`,
`name="dir/sub2" isFile=false opens=0 size=0`,
`name="dir/sub2/subsub2" isFile=false opens=0 size=0`,
}, itemAsString(c))
}
func TestCachePurgeOld(t *testing.T) {
r := fstest.NewRun(t)
defer r.Finalise()
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
c, err := newCache(ctx, r.Fremote, &DefaultOpt)
require.NoError(t, err)
// Test funcs
var removed []string
removedDir := true
removeFile := func(name string) {
removed = append(removed, name)
}
removeDir := func(name string) bool {
if removedDir {
removed = append(removed, name+"/")
}
return removedDir
}
removed = nil
c._purgeOld(-10*time.Second, removeFile)
c._purgeEmptyDirs(removeDir)
assert.Equal(t, []string(nil), removed)
c.open("sub/dir2/potato2")
c.open("sub/dir/potato")
c.close("sub/dir2/potato2")
c.open("sub/dir/potato")
assert.Equal(t, []string{
`name="" isFile=false opens=2 size=0`,
`name="sub" isFile=false opens=2 size=0`,
`name="sub/dir" isFile=false opens=2 size=0`,
`name="sub/dir/potato" isFile=true opens=2 size=0`,
`name="sub/dir2" isFile=false opens=0 size=0`,
`name="sub/dir2/potato2" isFile=true opens=0 size=0`,
}, itemAsString(c))
removed = nil
removedDir = true
c._purgeOld(-10*time.Second, removeFile)
c._purgeEmptyDirs(removeDir)
assert.Equal(t, []string{
"sub/dir2/potato2",
"sub/dir2/",
}, removed)
c.close("sub/dir/potato")
removed = nil
removedDir = true
c._purgeOld(-10*time.Second, removeFile)
c._purgeEmptyDirs(removeDir)
assert.Equal(t, []string(nil), removed)
c.close("sub/dir/potato")
assert.Equal(t, []string{
`name="" isFile=false opens=0 size=0`,
`name="sub" isFile=false opens=0 size=0`,
`name="sub/dir" isFile=false opens=0 size=0`,
`name="sub/dir/potato" isFile=true opens=0 size=0`,
}, itemAsString(c))
removed = nil
removedDir = false
c._purgeOld(10*time.Second, removeFile)
c._purgeEmptyDirs(removeDir)
assert.Equal(t, []string(nil), removed)
assert.Equal(t, []string{
`name="" isFile=false opens=0 size=0`,
`name="sub" isFile=false opens=0 size=0`,
`name="sub/dir" isFile=false opens=0 size=0`,
`name="sub/dir/potato" isFile=true opens=0 size=0`,
}, itemAsString(c))
removed = nil
removedDir = true
c._purgeOld(-10*time.Second, removeFile)
c._purgeEmptyDirs(removeDir)
assert.Equal(t, []string{
"sub/dir/potato",
"sub/dir/",
"sub/",
"/",
}, removed)
assert.Equal(t, []string(nil), itemAsString(c))
}
func TestCachePurgeOverQuota(t *testing.T) {
r := fstest.NewRun(t)
defer r.Finalise()
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Disable the cache cleaner as it interferes with these tests
opt := DefaultOpt
opt.CachePollInterval = 0
c, err := newCache(ctx, r.Fremote, &opt)
require.NoError(t, err)
// Test funcs
var removed []string
remove := func(name string) {
removed = append(removed, name)
c.remove(name)
}
removed = nil
c._purgeOverQuota(-1, remove)
assert.Equal(t, []string(nil), removed)
removed = nil
c._purgeOverQuota(0, remove)
assert.Equal(t, []string(nil), removed)
removed = nil
c._purgeOverQuota(1, remove)
assert.Equal(t, []string(nil), removed)
// Make some test files
c.open("sub/dir/potato")
p, err := c.mkdir("sub/dir/potato")
require.NoError(t, err)
err = ioutil.WriteFile(p, []byte("hello"), 0600)
require.NoError(t, err)
p, err = c.mkdir("sub/dir2/potato2")
c.open("sub/dir2/potato2")
require.NoError(t, err)
err = ioutil.WriteFile(p, []byte("hello2"), 0600)
require.NoError(t, err)
assert.Equal(t, []string{
`name="" isFile=false opens=2 size=0`,
`name="sub" isFile=false opens=2 size=0`,
`name="sub/dir" isFile=false opens=1 size=0`,
`name="sub/dir/potato" isFile=true opens=1 size=0`,
`name="sub/dir2" isFile=false opens=1 size=0`,
`name="sub/dir2/potato2" isFile=true opens=1 size=0`,
}, itemAsString(c))
// Check nothing removed
removed = nil
c._purgeOverQuota(1, remove)
assert.Equal(t, []string(nil), removed)
// Close the files
c.close("sub/dir/potato")
c.close("sub/dir2/potato2")
assert.Equal(t, []string{
`name="" isFile=false opens=0 size=0`,
`name="sub" isFile=false opens=0 size=0`,
`name="sub/dir" isFile=false opens=0 size=0`,
`name="sub/dir/potato" isFile=true opens=0 size=5`,
`name="sub/dir2" isFile=false opens=0 size=0`,
`name="sub/dir2/potato2" isFile=true opens=0 size=6`,
}, itemAsString(c))
// Update the stats to read the total size
err = c.updateStats()
require.NoError(t, err)
assert.Equal(t, int64(11), c.used)
// make potato2 definitely after potato
t1 := time.Now().Add(10 * time.Second)
c.updateStat("sub/dir2/potato2", t1, 6)
// Check only potato removed to get below quota
removed = nil
c._purgeOverQuota(10, remove)
assert.Equal(t, []string{
"sub/dir/potato",
}, removed)
assert.Equal(t, int64(6), c.used)
assert.Equal(t, []string{
`name="" isFile=false opens=0 size=0`,
`name="sub" isFile=false opens=0 size=0`,
`name="sub/dir" isFile=false opens=0 size=0`,
`name="sub/dir2" isFile=false opens=0 size=0`,
`name="sub/dir2/potato2" isFile=true opens=0 size=6`,
}, itemAsString(c))
// Put potato back
c.open("sub/dir/potato")
p, err = c.mkdir("sub/dir/potato")
require.NoError(t, err)
err = ioutil.WriteFile(p, []byte("hello"), 0600)
require.NoError(t, err)
c.close("sub/dir/potato")
// Update the stats to read the total size
err = c.updateStats()
require.NoError(t, err)
assert.Equal(t, int64(11), c.used)
assert.Equal(t, []string{
`name="" isFile=false opens=0 size=0`,
`name="sub" isFile=false opens=0 size=0`,
`name="sub/dir" isFile=false opens=0 size=0`,
`name="sub/dir/potato" isFile=true opens=0 size=5`,
`name="sub/dir2" isFile=false opens=0 size=0`,
`name="sub/dir2/potato2" isFile=true opens=0 size=6`,
}, itemAsString(c))
// make potato definitely after potato2
t2 := t1.Add(20 * time.Second)
c.updateStat("sub/dir/potato", t2, 5)
// Check only potato2 removed to get below quota
removed = nil
c._purgeOverQuota(10, remove)
assert.Equal(t, []string{
"sub/dir2/potato2",
}, removed)
assert.Equal(t, int64(5), c.used)
c.purgeEmptyDirs()
assert.Equal(t, []string{
`name="" isFile=false opens=0 size=0`,
`name="sub" isFile=false opens=0 size=0`,
`name="sub/dir" isFile=false opens=0 size=0`,
`name="sub/dir/potato" isFile=true opens=0 size=5`,
}, itemAsString(c))
// Now purge everything
removed = nil
c._purgeOverQuota(1, remove)
assert.Equal(t, []string{
"sub/dir/potato",
}, removed)
assert.Equal(t, int64(0), c.used)
c.purgeEmptyDirs()
assert.Equal(t, []string(nil), itemAsString(c))
// Check nothing left behind
c.clean()
assert.Equal(t, int64(0), c.used)
assert.Equal(t, []string(nil), itemAsString(c))
}