cacher

package
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Published: Apr 27, 2015 License: Apache-2.0 Imports: 10 Imported by: 0

Documentation

Overview

Package cacher provides various blobref fetching caching mechanisms.

Index

Constants

This section is empty.

Variables

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Functions

This section is empty.

Types

type CachingFetcher

type CachingFetcher struct {
	// contains filtered or unexported fields
}

A CachingFetcher is a blob.Fetcher and a blob.SeekFetcher.

func NewCachingFetcher

func NewCachingFetcher(cache blobserver.Cache, fetcher blob.Fetcher) *CachingFetcher

NewCachingFetcher returns a CachingFetcher that fetches from fetcher and writes to and serves from cache.

func (*CachingFetcher) Fetch

func (cf *CachingFetcher) Fetch(br blob.Ref) (file io.ReadCloser, size uint32, err error)

type DiskCache

type DiskCache struct {
	*CachingFetcher

	// Root is the temp directory being used to store files.
	// It is available mostly for debug printing.
	Root string
	// contains filtered or unexported fields
}

A DiskCache is a blob.Fetcher that serves from a local temp directory and is backed by a another blob.Fetcher (usually the pkg/client HTTP client).

func NewDiskCache

func NewDiskCache(fetcher blob.Fetcher) (*DiskCache, error)

NewDiskCache returns a new DiskCache from a Fetcher, which is usually the pkg/client HTTP client (which typically has much higher latency and lower bandwidth than local disk).

func (*DiskCache) Clean

func (dc *DiskCache) Clean()

Clean cleans some or all of the DiskCache.

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