func setUpBucket(
ctx context.Context,
flags *flagStorage,
conn gcs.Conn,
name string) (b gcs.Bucket, err error) {
// Extract the appropriate bucket.
b, err = conn.OpenBucket(ctx, name)
if err != nil {
err = fmt.Errorf("OpenBucket: %v", err)
return
}
// Enable rate limiting, if requested.
b, err = setUpRateLimiting(
b,
flags.OpRateLimitHz,
flags.EgressBandwidthLimitBytesPerSecond)
if err != nil {
err = fmt.Errorf("setUpRateLimiting: %v", err)
return
}
// Enable cached StatObject results, if appropriate.
if flags.StatCacheTTL != 0 {
const cacheCapacity = 4096
b = gcscaching.NewFastStatBucket(
flags.StatCacheTTL,
gcscaching.NewStatCache(cacheCapacity),
timeutil.RealClock(),
b)
}
return
}
// Configure a bucket based on the supplied flags.
//
// Special case: if the bucket name is canned.FakeBucketName, set up a fake
// bucket as described in that package.
func setUpBucket(
ctx context.Context,
flags *flagStorage,
conn gcs.Conn,
name string) (b gcs.Bucket, err error) {
// Set up the appropriate backing bucket.
if name == canned.FakeBucketName {
b = canned.MakeFakeBucket(ctx)
} else {
b, err = conn.OpenBucket(ctx, name)
if err != nil {
err = fmt.Errorf("OpenBucket: %v", err)
return
}
}
// Limit to a requested prefix of the bucket, if any.
if flags.OnlyDir != "" {
b, err = gcsx.NewPrefixBucket(path.Clean(flags.OnlyDir)+"/", b)
if err != nil {
err = fmt.Errorf("NewPrefixBucket: %v", err)
return
}
}
// Enable rate limiting, if requested.
b, err = setUpRateLimiting(
b,
flags.OpRateLimitHz,
flags.EgressBandwidthLimitBytesPerSecond)
if err != nil {
err = fmt.Errorf("setUpRateLimiting: %v", err)
return
}
// Enable cached StatObject results, if appropriate.
if flags.StatCacheTTL != 0 {
const cacheCapacity = 4096
b = gcscaching.NewFastStatBucket(
flags.StatCacheTTL,
gcscaching.NewStatCache(cacheCapacity),
timeutil.RealClock(),
b)
}
return
}
func (t *IntegrationTest) SetUp(ti *TestInfo) {
t.ctx = context.Background()
// Set up a fixed, non-zero time.
t.clock.SetTime(time.Date(2015, 4, 5, 2, 15, 0, 0, time.Local))
// Set up dependencies.
const cacheCapacity = 100
t.cache = gcscaching.NewStatCache(cacheCapacity)
t.wrapped = gcsfake.NewFakeBucket(&t.clock, "some_bucket")
t.bucket = gcscaching.NewFastStatBucket(
ttl,
t.cache,
&t.clock,
t.wrapped)
}
func (t *cachingTestCommon) SetUp(ti *TestInfo) {
// Wrap the bucket in a stat caching layer for the purposes of the file
// system.
t.uncachedBucket = gcsfake.NewFakeBucket(&t.clock, "some_bucket")
const statCacheCapacity = 1000
statCache := gcscaching.NewStatCache(statCacheCapacity)
t.bucket = gcscaching.NewFastStatBucket(
ttl,
statCache,
&t.clock,
t.uncachedBucket)
// Enable directory type caching.
t.serverCfg.DirTypeCacheTTL = ttl
// Call through.
t.fsTest.SetUp(ti)
}
func (t *StatCacheTest) SetUp(ti *TestInfo) {
t.cache.wrapped = gcscaching.NewStatCache(capacity)
}