client

package
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 Go to latest Published: Oct 29, 2014 License: Apache-2.0 Imports: 42 Imported by: 0

Documentation

Overview

Package client implements a Camlistore client.

Index

Constants

This section is empty.

Variables

View Source 
var ErrNoSearchRoot = errors.New("client: server doesn't support search")

ErrNoSearchRoot is returned by SearchRoot if the server doesn't support search.

View Source 
var ErrNoSigning = fmt.Errorf("client: server doesn't support signing")

ErrNoSigning is returned by ServerKeyID if the server doesn't support signing.

View Source 
var ErrNoStorageGeneration = errors.New("client: server doesn't report a storage generation")

ErrNoStorageGeneration is returned by StorageGeneration if the server doesn't report a storage generation value.

View Source 
var ErrNoSync = errors.New("client: server has no sync handlers")

ErrNoSync is returned by SyncHandlers if the server does not advertise syncs.

Functions

func AddFlags 

func AddFlags()

func ExplicitServer 

func ExplicitServer() string

ExplicitServer returns the blobserver given in the flags, if any.

Types

type ByCountAndBytes 

type ByCountAndBytes struct {
	Blobs int
	Bytes int64
}

func (*ByCountAndBytes) String 

func (bb *ByCountAndBytes) String() string

type Client 

type Client struct {

	// if set, we also skip the check against trustedCerts
	InsecureTLS bool // TODO: hide this. add accessor?
	// contains filtered or unexported fields
}

A Client provides access to a Camlistore server.

func New 

func New(server string) *Client

New returns a new Camlistore Client. The provided server is either "host:port" (assumed http, not https) or a URL prefix, with or without a path, or a server alias from the client configuration file. A server alias should not be confused with a hostname, therefore it cannot contain any colon or period. Errors are not returned until subsequent operations.

func NewFromParams 

func NewFromParams(server string, mode auth.AuthMode) *Client

NewFromParams returns a Client that uses the specified server base URL and auth but does not use any on-disk config files or environment variables for its configuration. It may still use the disk for caches.

func NewFromShareRoot 

func NewFromShareRoot(shareBlobURL string, opts ...ClientOption) (c *Client, target blob.Ref, err error)

NewFromShareRoot uses shareBlobURL to set up and return a client that will be used to fetch shared blobs.

func NewOrFail 

func NewOrFail() *Client

func NewStorageClient 

func NewStorageClient(s blobserver.Storage) *Client

NewStorageClient returns a Client that doesn't use HTTP, but uses s directly. This exists mainly so all the convenience methods on Client (e.g. the Upload variants) are available against storage directly. When using NewStorageClient, callers should call Close when done, in case the storage wishes to do a cleaner shutdown.

func (*Client) BlobRoot 

func (c *Client) BlobRoot() (string, error)

BlobRoot returns the server's blobroot URL prefix. If the client was constructed with an explicit path, that path is used. Otherwise the server's default advertised blobRoot is used.

func (*Client) Close 

func (c *Client) Close() error

Close closes the client. In most cases, it's not necessary to close a Client. The exception is for Clients created using NewStorageClient, where the Storage might implement io.Closer.

func (*Client) Describe 

func (c *Client) Describe(req *search.DescribeRequest) (*search.DescribeResponse, error)

func (*Client) DialFunc 

func (c *Client) DialFunc() func(network, addr string) (net.Conn, error)

DialFunc returns the adequate dial function, depending on whether SSL is required, the client's config has some trusted certs, and we're on android. If the client's config has some trusted certs, the server's certificate will be checked against those in the config after the TLS handshake.

func (*Client) DiscoveryDoc 

func (c *Client) DiscoveryDoc() (io.Reader, error)

DiscoveryDoc returns the server's JSON discovery document. This method exists purely for the "camtool discovery" command. Clients shouldn't have to parse this themselves.

func (*Client) EnumerateBlobs 

func (c *Client) EnumerateBlobs(ctx *context.Context, dest chan<- blob.SizedRef, after string, limit int) error

func (*Client) EnumerateBlobsOpts 

func (c *Client) EnumerateBlobsOpts(ctx *context.Context, ch chan<- blob.SizedRef, opts EnumerateOpts) error

EnumerateBlobsOpts sends blobs to the provided channel, as directed by opts. The channel will be closed, regardless of whether an error is returned.

func (*Client) Fetch 

func (c *Client) Fetch(b blob.Ref) (io.ReadCloser, uint32, error)

func (*Client) FetchSchemaBlob 

func (c *Client) FetchSchemaBlob(b blob.Ref) (*schema.Blob, error)

func (*Client) FetchVia 

func (c *Client) FetchVia(b blob.Ref, v []blob.Ref) (body io.ReadCloser, size uint32, err error)

func (*Client) FileHasContents 

func (c *Client) FileHasContents(f, wholeRef blob.Ref) bool

FileHasContents returns true iff f refers to a "file" or "bytes" schema blob, the server is configured with a "download helper", and the server responds that all chunks of 'f' are available and match the digest of wholeRef.

func (*Client) GetClaims 

func (c *Client) GetClaims(req *search.ClaimsRequest) (*search.ClaimsResponse, error)

func (*Client) GetJSON 

func (c *Client) GetJSON(url string, data interface{}) error

GetJSON sends a GET request to url, and unmarshals the returned JSON response into data. The URL's host must match the client's configured server.

func (*Client) GetPermanodesWithAttr 

func (c *Client) GetPermanodesWithAttr(req *search.WithAttrRequest) (*search.WithAttrResponse, error)

func (*Client) GetRecentPermanodes 

func (c *Client) GetRecentPermanodes(req *search.RecentRequest) (*search.RecentResponse, error)

GetRecentPermanodes implements search.IGetRecentPermanodes against a remote server over HTTP.

func (*Client) HTTPClient 

func (c *Client) HTTPClient() *http.Client

HTTPClient returns the Client's underlying http.Client.

func (*Client) IsIgnoredFile 

func (c *Client) IsIgnoredFile(fullpath string) bool

IsIgnoredFile returns whether the file at fullpath should be ignored by camput. The fullpath is checked against the ignoredFiles list, trying the following rules in this order: 1) star-suffix style matching (.e.g *.jpg). 2) Shell pattern match as done by http://golang.org/pkg/path/filepath/#Match 3) If the pattern is an absolute path to a directory, fullpath matches if it is that directory or a child of it. 4) If the pattern is a relative path, fullpath matches if it has pattern as a path component (i.e the pattern is a part of fullpath that fits exactly between two path separators).

func (*Client) Post 

func (c *Client) Post(url string, bodyType string, body io.Reader) error

Post is like http://golang.org/pkg/net/http/#Client.Post but with implementation details like gated requests. The URL's host must match the client's configured server.

func (*Client) Query 

func (c *Client) Query(req *search.SearchQuery) (*search.SearchResult, error)

func (*Client) ReceiveBlob 

func (c *Client) ReceiveBlob(br blob.Ref, source io.Reader) (blob.SizedRef, error)

func (*Client) RemoveBlob 

func (c *Client) RemoveBlob(b blob.Ref) error

Remove the single blob. An error is returned if the server failed to remove the blob. Removing a non-existent blob isn't an error.

func (*Client) RemoveBlobs 

func (c *Client) RemoveBlobs(blobs []blob.Ref) error

Remove the list of blobs. An error is returned if the server failed to remove a blob. Removing a non-existent blob isn't an error.

func (*Client) SearchExistingFileSchema 

func (c *Client) SearchExistingFileSchema(wholeRef blob.Ref) (blob.Ref, error)

SearchExistingFileSchema does a search query looking for an existing file with entire contents of wholeRef, then does a HEAD request to verify the file still exists on the server. If so, it returns that file schema's blobref.

May return (zero, nil) on ENOENT. A non-nil error is only returned if there were problems searching.

func (*Client) SearchRoot 

func (c *Client) SearchRoot() (string, error)

SearchRoot returns the server's search handler. If the server isn't running an index and search handler, the error will be ErrNoSearchRoot.

func (*Client) SecretRingFile 

func (c *Client) SecretRingFile() string

SecretRingFile returns the filename to the user's GPG secret ring. The value comes from either the --secret-keyring flag, the CAMLI_SECRET_RING environment variable, the client config file's "identitySecretRing" value, or the operating system default location.

func (*Client) ServerKeyID 

func (c *Client) ServerKeyID() (string, error)

ServerKeyID returns the server's GPG public key ID. If the server isn't running a sign handler, the error will be ErrNoSigning.

func (*Client) SetHTTPClient 

func (c *Client) SetHTTPClient(client *http.Client)

SetHTTPClient sets the Camlistore client's HTTP client. If nil, the default HTTP client is used.

func (*Client) SetHaveCache 

func (c *Client) SetHaveCache(cache HaveCache)

func (*Client) SetLogger 

func (c *Client) SetLogger(logger *log.Logger)

func (*Client) SetupAuth 

func (c *Client) SetupAuth() error

SetupAuth sets the client's authMode. It tries from the environment first if we're on android or in dev mode, and then from the client configuration.

func (*Client) SetupAuthFromString 

func (c *Client) SetupAuthFromString(a string) error

SetupAuthFromString configures the clients authentication mode from an explicit auth string.

func (*Client) Signer 

func (c *Client) Signer() (*schema.Signer, error)

func (*Client) SignerPublicKeyBlobref 

func (c *Client) SignerPublicKeyBlobref() blob.Ref

SignerPublicKeyBlobref returns the blobref of signer's public key. The blobref may not be valid (zero blob.Ref) if e.g the configuration is invalid or incomplete.

func (*Client) SimpleEnumerateBlobs 

func (c *Client) SimpleEnumerateBlobs(ctx *context.Context, ch chan<- blob.SizedRef) error

SimpleEnumerateBlobs sends all blobs to the provided channel. The channel will be closed, regardless of whether an error is returned.

func (*Client) StatBlobs 

func (c *Client) StatBlobs(dest chan<- blob.SizedRef, blobs []blob.Ref) error

func (*Client) Stats 

func (c *Client) Stats() Stats

func (*Client) StorageGeneration 

func (c *Client) StorageGeneration() (string, error)

StorageGeneration returns the server's unique ID for its storage generation, reset whenever storage is reset, moved, or partially lost.

This is a value that can be used in client cache keys to add certainty that they're talking to the same instance as previously.

If the server doesn't return such a value, the error will be ErrNoStorageGeneration.

func (*Client) SyncHandlers 

func (c *Client) SyncHandlers() ([]*SyncInfo, error)

SyncHandlers returns the server's sync handlers "from" and "to" prefix URLs. If the server isn't running any sync handler, the error will be ErrNoSync.

func (*Client) TLSConfig 

func (c *Client) TLSConfig() (*tls.Config, error)

TLSConfig returns the correct tls.Config depending on whether SSL is required, the client's config has some trusted certs, and we're on android.

func (*Client) TransportForConfig 

func (c *Client) TransportForConfig(tc *TransportConfig) http.RoundTripper

TransportForConfig returns a transport for the client, setting the correct Proxy, Dial, and TLSClientConfig if needed. It does not mutate c. It is the caller's responsibility to then use that transport to set the client's httpClient with SetHTTPClient.

func (*Client) Upload 

func (c *Client) Upload(h *UploadHandle) (*PutResult, error)

Upload uploads a blob, as described by the provided UploadHandle parameters.

func (*Client) UploadAndSignBlob 

func (c *Client) UploadAndSignBlob(b schema.AnyBlob) (*PutResult, error)

func (*Client) UploadBlob 

func (c *Client) UploadBlob(b schema.AnyBlob) (*PutResult, error)

func (*Client) UploadNewPermanode 

func (c *Client) UploadNewPermanode() (*PutResult, error)

func (*Client) UploadPlannedPermanode 

func (c *Client) UploadPlannedPermanode(key string, sigTime time.Time) (*PutResult, error)

type ClientOption 

type ClientOption interface {
	// contains filtered or unexported methods
}

func OptionInsecure 

func OptionInsecure(v bool) ClientOption

func OptionTrustedCert 

func OptionTrustedCert(cert string) ClientOption

type EnumerateOpts 

type EnumerateOpts struct {
	After   string        // last blobref seen; start with ones greater than this
	MaxWait time.Duration // how long to poll for (second granularity), waiting for any blob, or 0 for no limit
	Limit   int           // if non-zero, the max blobs to return
}

EnumerateOpts are the options to Client.EnumerateBlobsOpts.

type HaveCache 

type HaveCache interface {
	StatBlobCache(br blob.Ref) (size uint32, ok bool)
	NoteBlobExists(br blob.Ref, size uint32)
}

A HaveCache caches whether a remote blobserver has a blob.

type PutResult 

type PutResult struct {
	BlobRef blob.Ref
	Size    uint32
	Skipped bool // already present on blobserver
}

func (*PutResult) SizedBlobRef 

func (pr *PutResult) SizedBlobRef() blob.SizedRef

type ResponseFormatError 

type ResponseFormatError error

type Stats 

type Stats struct {
	// The number of uploads that were requested, but perhaps
	// not actually performed if the server already had the items.
	UploadRequests ByCountAndBytes

	// The uploads which were actually sent to the blobserver
	// due to the server not having the blobs
	Uploads ByCountAndBytes
}

func (*Stats) String 

func (s *Stats) String() string

type SyncInfo 

type SyncInfo struct {
	From    string
	To      string
	ToIndex bool // whether this sync is from a blob storage to an index
}

SyncInfo holds the data that were acquired with a discovery and that are relevant to a syncHandler.

type TransportConfig 

type TransportConfig struct {
	// Proxy optionally specifies the Proxy for the transport. Useful with
	// camput for debugging even localhost requests.
	Proxy   func(*http.Request) (*url.URL, error)
	Verbose bool // Verbose enables verbose logging of HTTP requests.
}

TransportConfig contains options for SetupTransport.

type UploadHandle 

type UploadHandle struct {
	// BlobRef is the required blobref of the blob to upload.
	BlobRef blob.Ref

	// Contents is the blob data.
	Contents io.Reader

	// Size optionally specifies the size of Contents.
	// If <= 0, the Contents are slurped into memory to count the size.
	Size uint32

	// Vivify optionally instructs the server to create a
	// permanode for this blob. If used, the blob should be a
	// "file" schema blob. This is typically used by
	// lesser-trusted clients (such a mobile phones) which don't
	// have rights to do signing directly.
	Vivify bool

	// SkipStat indicates whether the stat check (checking whether
	// the server already has the blob) will be skipped and the
	// blob should be uploaded immediately. This is useful for
	// small blobs that the server is unlikely to already have
	// (e.g. new claims).
	SkipStat bool
}

UploadHandle contains the parameters is a request to upload a blob.

func NewUploadHandleFromString 

func NewUploadHandleFromString(data string) *UploadHandle

NewUploadHandleFromString returns an upload handle

Source Files

View all Source files

Directories

Path Synopsis
Package android contains code specific to running the Camlistore client code as a child process on Android.
 Package android contains code specific to running the Camlistore client code as a child process on Android.

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