shared

package
v0.0.0-...-04e5504 Latest Latest
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 Go to latest Published: Mar 3, 2021 License: Apache-2.0 Imports: 49 Imported by: 0

Documentation

Index

Constants

View Source 
const ABSTRACT_UNIX_SOCK_LEN int = C.ABSTRACT_UNIX_SOCK_LEN
View Source 
const DefaultPort = "8443"
View Source 
const POLLERR int = C.POLLERR
View Source 
const POLLHUP int = C.POLLHUP
View Source 
const POLLIN int = C.POLLIN
View Source 
const POLLNVAL int = C.POLLNVAL
View Source 
const POLLPRI int = C.POLLPRI
View Source 
const POLLRDHUP int = C.POLLRDHUP
View Source 
const SnapshotDelimiter = "/"

Variables

View Source 
var HugePageSizeKeys = [...]string{"limits.hugepages.64KB", "limits.hugepages.1MB", "limits.hugepages.2MB", "limits.hugepages.1GB"}

HugePageSizeKeys is a list of known hugepage size configuration keys.

View Source 
var HugePageSizeSuffix = [...]string{"64KB", "1MB", "2MB", "1GB"}

HugePageSizeSuffix contains the list of known hugepage size suffixes.

View Source 
var KnownInstanceConfigKeys = map[string]func(value string) error{
	"boot.autostart":             IsBool,
	"boot.autostart.delay":       IsInt64,
	"boot.autostart.priority":    IsInt64,
	"boot.stop.priority":         IsInt64,
	"boot.host_shutdown_timeout": IsInt64,

	"limits.cpu": func(value string) error {
		if value == "" {
			return nil
		}

		match, _ := regexp.MatchString("^[-,0-9]*$", value)
		if !match {
			return fmt.Errorf("Invalid CPU limit syntax")
		}

		if strings.HasPrefix(value, "-") || strings.HasPrefix(value, ",") {
			return fmt.Errorf("CPU limit can't start with a separator")
		}

		if strings.HasSuffix(value, "-") || strings.HasSuffix(value, ",") {
			return fmt.Errorf("CPU limit can't end with a separator")
		}

		return nil
	},
	"limits.cpu.allowance": func(value string) error {
		if value == "" {
			return nil
		}

		if strings.HasSuffix(value, "%") {

			_, err := strconv.Atoi(strings.TrimSuffix(value, "%"))
			if err != nil {
				return err
			}

			return nil
		}

		fields := strings.SplitN(value, "/", 2)
		if len(fields) != 2 {
			return fmt.Errorf("Invalid allowance: %s", value)
		}

		_, err := strconv.Atoi(strings.TrimSuffix(fields[0], "ms"))
		if err != nil {
			return err
		}

		_, err = strconv.Atoi(strings.TrimSuffix(fields[1], "ms"))
		if err != nil {
			return err
		}

		return nil
	},
	"limits.cpu.priority": IsPriority,

	"limits.disk.priority": IsPriority,

	"limits.hugepages.64KB": IsSize,
	"limits.hugepages.1MB":  IsSize,
	"limits.hugepages.2MB":  IsSize,
	"limits.hugepages.1GB":  IsSize,

	"limits.memory": func(value string) error {
		if value == "" {
			return nil
		}

		if strings.HasSuffix(value, "%") {
			_, err := strconv.ParseInt(strings.TrimSuffix(value, "%"), 10, 64)
			if err != nil {
				return err
			}

			return nil
		}

		_, err := units.ParseByteSizeString(value)
		if err != nil {
			return err
		}

		return nil
	},
	"limits.memory.enforce": func(value string) error {
		return IsOneOf(value, []string{"soft", "hard"})
	},
	"limits.memory.swap":          IsBool,
	"limits.memory.swap.priority": IsPriority,
	"limits.memory.hugepages":     IsBool,

	"limits.network.priority": IsPriority,

	"limits.processes": IsInt64,

	"linux.kernel_modules": IsAny,

	"migration.incremental.memory":            IsBool,
	"migration.incremental.memory.iterations": IsUint32,
	"migration.incremental.memory.goal":       IsUint32,

	"nvidia.runtime":             IsBool,
	"nvidia.driver.capabilities": IsAny,
	"nvidia.require.cuda":        IsAny,
	"nvidia.require.driver":      IsAny,

	"security.nesting":       IsBool,
	"security.privileged":    IsBool,
	"security.devlxd":        IsBool,
	"security.devlxd.images": IsBool,

	"security.protection.delete": IsBool,
	"security.protection.shift":  IsBool,

	"security.idmap.base":     IsUint32,
	"security.idmap.isolated": IsBool,
	"security.idmap.size":     IsUint32,

	"security.secureboot": IsBool,

	"security.syscalls.blacklist_default":       IsBool,
	"security.syscalls.blacklist_compat":        IsBool,
	"security.syscalls.blacklist":               IsAny,
	"security.syscalls.intercept.mknod":         IsBool,
	"security.syscalls.intercept.mount":         IsBool,
	"security.syscalls.intercept.mount.allowed": IsAny,
	"security.syscalls.intercept.mount.fuse":    IsAny,
	"security.syscalls.intercept.mount.shift":   IsBool,
	"security.syscalls.intercept.setxattr":      IsBool,
	"security.syscalls.whitelist":               IsAny,

	"snapshots.schedule": func(value string) error {
		if value == "" {
			return nil
		}

		if len(strings.Split(value, " ")) != 5 {
			return fmt.Errorf("Schedule must be of the form: <minute> <hour> <day-of-month> <month> <day-of-week>")
		}

		_, err := cron.Parse(fmt.Sprintf("* %s", value))
		if err != nil {
			return errors.Wrap(err, "Error parsing schedule")
		}

		return nil
	},
	"snapshots.schedule.stopped": IsBool,
	"snapshots.pattern":          IsAny,
	"snapshots.expiry": func(value string) error {

		_, err := GetSnapshotExpiry(time.Time{}, value)
		return err
	},

	"raw.apparmor": IsAny,
	"raw.idmap":    IsAny,
	"raw.lxc":      IsAny,
	"raw.qemu":     IsAny,
	"raw.seccomp":  IsAny,

	"volatile.apply_template":   IsAny,
	"volatile.base_image":       IsAny,
	"volatile.last_state.idmap": IsAny,
	"volatile.last_state.power": IsAny,
	"volatile.idmap.base":       IsAny,
	"volatile.idmap.current":    IsAny,
	"volatile.idmap.next":       IsAny,
	"volatile.apply_quota":      IsAny,
}

KnownInstanceConfigKeys maps all fully defined, well-known config keys to an appropriate checker function, which validates whether or not a given value is syntactically legal.

View Source 
var ObjectFound = fmt.Errorf("Found requested object")
View Source 
var WebsocketUpgrader = websocket.Upgrader{
	CheckOrigin: func(r *http.Request) bool { return true },
}

Functions

func AddSlash 

func AddSlash(path string) string

AddSlash adds a slash to the end of paths if they don't already have one. This can be useful for rsyncing things, since rsync has behavior present on the presence or absence of a trailing slash.

func AllocatePort 

func AllocatePort() (int, error)

AllocatePort asks the kernel for a free open port that is ready to use

func AtoiEmptyDefault 

func AtoiEmptyDefault(s string, def int) (int, error)

func CachePath 

func CachePath(path ...string) string

CachePath returns the directory that LXD should its cache under. If LXD_DIR is set, this path is $LXD_DIR/cache, otherwise it is /var/cache/lxd.

func CertFingerprint 

func CertFingerprint(cert *x509.Certificate) string

func CertFingerprintStr 

func CertFingerprintStr(c string) (string, error)

func ConfigKeyChecker 

func ConfigKeyChecker(key string) (func(value string) error, error)

ConfigKeyChecker returns a function that will check whether or not a provide value is valid for the associate config key. Returns an error if the key is not known. The checker function only performs syntactic checking of the value, semantic and usage checking must be done by the caller. User defined keys are always considered to be valid, e.g. user.* and environment.* keys.

func DebugJson 

func DebugJson(r *bytes.Buffer)

func DeepCopy 

func DeepCopy(src, dest interface{}) error

DeepCopy copies src to dest by using encoding/gob so its not that fast.

func DefaultWriter 

func DefaultWriter(conn *websocket.Conn, w io.WriteCloser, writeDone chan<- bool)

func DetectCompression 

func DetectCompression(fname string) ([]string, string, []string, error)

func DetectCompressionFile 

func DetectCompressionFile(f io.Reader) ([]string, string, []string, error)

DetectCompressionFile detects the compression type of a file and returns the tar arguments needed to unpack the file, compression type (in the form of a file extension), and the command needed to decompress the file to an uncompressed tarball.

func DeviceTotalMemory 

func DeviceTotalMemory() (int64, error)

func DirCopy 

func DirCopy(source string, dest string) error

DirCopy copies a directory recursively, overwriting the target if it exists.

func DownloadFileHash 

func DownloadFileHash(httpClient *http.Client, useragent string, progress func(progress ioprogress.ProgressData), canceler *cancel.Canceler, filename string, url string, hash string, hashFunc hash.Hash, target io.WriteSeeker) (int64, error)

func EscapePathFstab 

func EscapePathFstab(path string) string

EscapePathFstab escapes a path fstab-style. This ensures that getmntent_r() and friends can correctly parse stuff like /some/wacky path with spaces /some/wacky target with spaces

func ExecReaderToChannel 

func ExecReaderToChannel(r io.Reader, bufferSize int, exited <-chan bool, fd int) <-chan []byte

Extensively commented directly in the code. Please leave the comments! Looking at this in a couple of months noone will know why and how this works anymore.

func FileCopy 

func FileCopy(source string, dest string) error

FileCopy copies a file, overwriting the target if it exists.

func FileMove 

func FileMove(oldPath string, newPath string) error

FileMove tries to move a file by using os.Rename, if that fails it tries to copy the file and remove the source.

func FindOrGenCert 

func FindOrGenCert(certf string, keyf string, certtype bool, addHosts bool) error

FindOrGenCert generates a keypair if needed. The type argument is false for server, true for client.

func GenCert 

func GenCert(certf string, keyf string, certtype bool, addHosts bool) error

GenCert will create and populate a certificate file and a key file

func GenerateMemCert 

func GenerateMemCert(client bool, addHosts bool) ([]byte, []byte, error)

GenerateMemCert creates client or server certificate and key pair, returning them as byte arrays in memory.

func GetAllXattr 

func GetAllXattr(path string) (xattrs map[string]string, err error)

GetAllXattr retrieves all extended attributes associated with a file, directory or symbolic link.

func GetErrno 

func GetErrno(err error) (errno error, iserrno bool)

Detect whether err is an errno.

func GetFileStat 

func GetFileStat(p string) (uid int, gid int, major uint32, minor uint32, inode uint64, nlink int, err error)

func GetOwnerMode 

func GetOwnerMode(fInfo os.FileInfo) (os.FileMode, int, int)

func GetPathMode 

func GetPathMode(path string) (os.FileMode, error)

GetPathMode returns a os.FileMode for the provided path

func GetPollRevents 

func GetPollRevents(fd int, timeout int, flags int) (int, int, error)

func GetRemoteCertificate 

func GetRemoteCertificate(address string, useragent string) (*x509.Certificate, error)

func GetRootDiskDevice 

func GetRootDiskDevice(devices map[string]map[string]string) (string, map[string]string, error)

GetRootDiskDevice returns the container device that is configured as root disk

func GetSnapshotExpiry 

func GetSnapshotExpiry(refDate time.Time, s string) (time.Time, error)

func GetTLSConfig 

func GetTLSConfig(tlsClientCertFile string, tlsClientKeyFile string, tlsClientCAFile string, tlsRemoteCert *x509.Certificate) (*tls.Config, error)

func GetTLSConfigMem 

func GetTLSConfigMem(tlsClientCert string, tlsClientKey string, tlsClientCA string, tlsRemoteCertPEM string, insecureSkipVerify bool) (*tls.Config, error)

func GroupId 

func GroupId(name string) (int, error)

GroupId is an adaption from https://codereview.appspot.com/4589049.

func HostPath 

func HostPath(path string) string

HostPath returns the host path for the provided path On a normal system, this does nothing When inside of a snap environment, returns the real path

func HostPathFollow 

func HostPathFollow(path string) string

HostPathFollow takes a valid path (from HostPath) and resolves it all the way to its target or to the last which can be resolved.

func InitTLSConfig 

func InitTLSConfig() *tls.Config

InitTLSConfig returns a tls.Config populated with default encryption parameters. This is used as baseline config for both client and server certificates used by LXD.

func InstanceGetParentAndSnapshotName 

func InstanceGetParentAndSnapshotName(name string) (string, string, bool)

InstanceGetParentAndSnapshotName returns the parent instance name, snapshot name, and whether it actually was a snapshot name.

func Int64InSlice 

func Int64InSlice(key int64, list []int64) bool

func IntInSlice 

func IntInSlice(key int, list []int) bool

func IsAny 

func IsAny(value string) error

func IsBlockdev 

func IsBlockdev(fm os.FileMode) bool

func IsBlockdevPath 

func IsBlockdevPath(pathName string) bool

func IsBool 

func IsBool(value string) error

func IsDeviceID 

func IsDeviceID(value string) error

IsDeviceID validates string is four lowercase hex characters suitable as Vendor or Device ID.

func IsDir 

func IsDir(name string) bool

IsDir returns true if the given path is a directory.

func IsInt64 

func IsInt64(value string) error

func IsLoopback 

func IsLoopback(iface *net.Interface) bool

func IsMountPoint 

func IsMountPoint(name string) bool

func IsNotEmpty 

func IsNotEmpty(value string) error

func IsOneOf 

func IsOneOf(value string, valid []string) error

func IsPriority 

func IsPriority(value string) error

func IsRootDiskDevice 

func IsRootDiskDevice(device map[string]string) bool

IsRootDiskDevice returns true if the given device representation is configured as root disk for a container. It typically get passed a specific entry of api.Instance.Devices.

func IsSize 

func IsSize(value string) error

IsSize checks if string is valid size according to units.ParseByteSizeString.

func IsSnapshot 

func IsSnapshot(name string) bool

func IsTrue 

func IsTrue(value string) bool

func IsUint32 

func IsUint32(value string) error

func IsUint8 

func IsUint8(value string) error

func IsUnixDev 

func IsUnixDev(path string) bool

func IsUnixSocket 

func IsUnixSocket(path string) bool

IsUnixSocket returns true if the given path is either a Unix socket or a symbolic link pointing at a Unix socket.

func LogPath 

func LogPath(path ...string) string

LogPath returns the directory that LXD should put logs under. If LXD_DIR is set, this path is $LXD_DIR/logs, otherwise it is /var/log/lxd.

func LookupUUIDByBlockDevPath 

func LookupUUIDByBlockDevPath(diskDevice string) (string, error)

func MkdirAllOwner 

func MkdirAllOwner(path string, perm os.FileMode, uid int, gid int) error

func NetworkGetCounters 

func NetworkGetCounters(ifName string) api.NetworkStateCounters

func OpenPty 

func OpenPty(uid, gid int64) (master *os.File, slave *os.File, err error)

func ParseLXDFileHeaders 

func ParseLXDFileHeaders(headers http.Header) (uid int64, gid int64, mode int, type_ string, write string)

func ParseMetadata 

func ParseMetadata(metadata interface{}) (map[string]interface{}, error)

func ParseNumberFromFile 

func ParseNumberFromFile(file string) (int64, error)

func PathExists 

func PathExists(name string) bool

func PathIsEmpty 

func PathIsEmpty(path string) (bool, error)

PathIsEmpty checks if the given path is empty.

func Pipe 

func Pipe() (master *os.File, slave *os.File, err error)

func ProxyFromConfig 

func ProxyFromConfig(httpsProxy string, httpProxy string, noProxy string) func(req *http.Request) (*url.URL, error)

func ProxyFromEnvironment 

func ProxyFromEnvironment(req *http.Request) (*url.URL, error)

This is basically the same as golang's ProxyFromEnvironment, except it doesn't fall back to http_proxy when https_proxy isn't around, which is incorrect behavior. It still respects HTTP_PROXY, HTTPS_PROXY, and NO_PROXY.

func RFC3493Dialer 

func RFC3493Dialer(network, address string) (net.Conn, error)

func RandomCryptoString 

func RandomCryptoString() (string, error)

Returns a random base64 encoded string from crypto/rand.

func ReadCert 

func ReadCert(fpath string) (*x509.Certificate, error)

func ReadStdin 

func ReadStdin() ([]byte, error)

func ReadToJSON 

func ReadToJSON(r io.Reader, req interface{}) error

func ReaderToChannel 

func ReaderToChannel(r io.Reader, bufferSize int) <-chan []byte

func RemoveDuplicatesFromString 

func RemoveDuplicatesFromString(s string, sep string) string

RemoveDuplicatesFromString removes all duplicates of the string 'sep' from the specified string 's'. Leading and trailing occurrences of sep are NOT removed (duplicate leading/trailing are). Performs poorly if there are multiple consecutive redundant separators.

func RenderTemplate 

func RenderTemplate(template string, ctx pongo2.Context) (string, error)

RenderTemplate renders a pongo2 template.

func RunCommand 

func RunCommand(name string, arg ...string) (string, error)

RunCommand runs a command with optional arguments and returns stdout. If the command fails to start or returns a non-zero exit code then an error is returned containing the output of stderr.

func RunCommandCLocale 

func RunCommandCLocale(name string, arg ...string) (string, error)

RunCommandCLocale runs a command with a LANG=C.UTF-8 environment set with optional arguments and returns stdout. If the command fails to start or returns a non-zero exit code then an error is returned containing the output of stderr.

func RunCommandSplit 

func RunCommandSplit(env []string, name string, arg ...string) (string, string, error)

RunCommandSplit runs a command with a supplied environment and optional arguments and returns the resulting stdout and stderr output as separate variables. If the supplied environment is nil then the default environment is used. If the command fails to start or returns a non-zero exit code then an error is returned containing the output of stderr too.

func RunCommandWithFds 

func RunCommandWithFds(stdin io.Reader, stdout io.Writer, name string, arg ...string) error

func RunningInUserNS 

func RunningInUserNS() bool

func SetProgressMetadata 

func SetProgressMetadata(metadata map[string]interface{}, stage, displayPrefix string, percent, processed, speed int64)

func SetSize 

func SetSize(fd int, width int, height int) (err error)

func SplitExt 

func SplitExt(fpath string) (string, string)

func Statvfs 

func Statvfs(path string) (*unix.Statfs_t, error)

func StringInSlice 

func StringInSlice(key string, list []string) bool

func StringMapHasStringKey 

func StringMapHasStringKey(m map[string]string, keys ...string) bool

StringMapHasStringKey returns true if any of the supplied keys are present in the map.

func TextEditor 

func TextEditor(inPath string, inContent []byte) ([]byte, error)

Spawn the editor with a temporary YAML file for editing configs

func TimeIsSet 

func TimeIsSet(ts time.Time) bool

func TryRunCommand 

func TryRunCommand(name string, arg ...string) (string, error)

TryRunCommand runs the specified command up to 20 times with a 500ms delay between each call until it runs without an error. If after 20 times it is still failing then returns the error.

func URLEncode 

func URLEncode(path string, query map[string]string) (string, error)

URLEncode encodes a path and query parameters to a URL.

func Uint64InSlice 

func Uint64InSlice(key uint64, list []uint64) bool

func Unpack 

func Unpack(file string, path string, blockBackend bool, runningInUserns bool, tracker *ioprogress.ProgressTracker) error

func UserId 

func UserId(name string) (int, error)

UserId is an adaption from https://codereview.appspot.com/4589049.

func ValidHostname 

func ValidHostname(name string) error

ValidHostname checks the string is valid DNS hostname.

func VarPath 

func VarPath(path ...string) string

VarPath returns the provided path elements joined by a slash and appended to the end of $LXD_DIR, which defaults to /var/lib/lxd.

func WebsocketConsoleMirror 

func WebsocketConsoleMirror(conn *websocket.Conn, w io.WriteCloser, r io.ReadCloser) (chan bool, chan bool)

func WebsocketMirror 

func WebsocketMirror(conn *websocket.Conn, w io.WriteCloser, r io.ReadCloser, Reader WebSocketMirrorReader, Writer WebSocketMirrorWriter) (chan bool, chan bool)

func WebsocketProxy 

func WebsocketProxy(source *websocket.Conn, target *websocket.Conn) chan bool

func WebsocketRecvStream 

func WebsocketRecvStream(w io.Writer, conn *websocket.Conn) chan bool

func WebsocketSendStream 

func WebsocketSendStream(conn *websocket.Conn, r io.Reader, bufferSize int) chan bool

func WriteAll 

func WriteAll(w io.Writer, data []byte) error

func WriteTempFile 

func WriteTempFile(dir string, prefix string, content string) (string, error)

WriteTempFile creates a temp file with the specified content

Types

type BytesReadCloser 

type BytesReadCloser struct {
	Buf *bytes.Buffer
}

func (BytesReadCloser) Close 

func (r BytesReadCloser) Close() error

func (BytesReadCloser) Read 

func (r BytesReadCloser) Read(b []byte) (n int, err error)

type CertInfo 

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

CertInfo captures TLS certificate information about a certain public/private keypair and an optional CA certificate.

Given LXD's support for PKI setups, these two bits of information are normally used and passed around together, so this structure helps with that (see doc/security.md for more details).

func KeyPairAndCA 

func KeyPairAndCA(dir, prefix string, kind CertKind, addHosts bool) (*CertInfo, error)

KeyPairAndCA returns a CertInfo object with a reference to the key pair and (optionally) CA certificate located in the given directory and having the given name prefix

The naming conversion for the various files is:

<prefix>.crt -> public key <prefix>.key -> private key <prefix>.ca -> CA certificate

If no public/private key files are found, a new key pair will be generated and saved on disk.

If a CA certificate is found, it will be returned as well as second return value (otherwise it will be nil).

func TestingAltKeyPair 

func TestingAltKeyPair() *CertInfo

TestingAltKeyPair returns CertInfo object initialized with a test keypair which differs from the one returned by TestCertInfo. It's meant to be used only by tests.

func TestingKeyPair 

func TestingKeyPair() *CertInfo

TestingKeyPair returns CertInfo object initialized with a test keypair. It's meant to be used only by tests.

func (*CertInfo) CA 

func (c *CertInfo) CA() *x509.Certificate

CA returns the CA certificate.

func (*CertInfo) Fingerprint 

func (c *CertInfo) Fingerprint() string

Fingerprint returns the fingerprint of the public key.

func (*CertInfo) KeyPair 

func (c *CertInfo) KeyPair() tls.Certificate

KeyPair returns the public/private key pair.

func (*CertInfo) PrivateKey 

func (c *CertInfo) PrivateKey() []byte

PrivateKey is a convenience to encode the underlying private key.

func (*CertInfo) PublicKey 

func (c *CertInfo) PublicKey() []byte

PublicKey is a convenience to encode the underlying public key to ASCII.

type CertKind 

type CertKind int

CertKind defines the kind of certificate to generate from scratch in KeyPairAndCA when it's not there.

The two possible kinds are client and server, and they differ in the ext-key-usage bitmaps. See GenerateMemCert for more details. 

const (
	CertClient CertKind = iota
	CertServer
)

Possible kinds of certificates.

type InstanceAction 

type InstanceAction string
const (
	Stop     InstanceAction = "stop"
	Start    InstanceAction = "start"
	Restart  InstanceAction = "restart"
	Freeze   InstanceAction = "freeze"
	Unfreeze InstanceAction = "unfreeze"
)

type Jmap 

type Jmap map[string]interface{}

func (Jmap) GetBool 

func (m Jmap) GetBool(key string) (bool, error)

func (Jmap) GetInt 

func (m Jmap) GetInt(key string) (int, error)

func (Jmap) GetMap 

func (m Jmap) GetMap(key string) (Jmap, error)

func (Jmap) GetString 

func (m Jmap) GetString(key string) (string, error)

type ReadSeeker 

type ReadSeeker struct {
	io.Reader
	io.Seeker
}

func NewReadSeeker 

func NewReadSeeker(reader io.Reader, seeker io.Seeker) *ReadSeeker

func (*ReadSeeker) Read 

func (r *ReadSeeker) Read(p []byte) (n int, err error)

func (*ReadSeeker) Seek 

func (r *ReadSeeker) Seek(offset int64, whence int) (int64, error)

type RunError 

type RunError struct {
	Err    error
	Stdout string
	Stderr string
	// contains filtered or unexported fields
}

func (RunError) Error 

func (e RunError) Error() string

type Utsname 

type Utsname struct {
	Sysname    string
	Nodename   string
	Release    string
	Version    string
	Machine    string
	Domainname string
}

Utsname returns the same info as unix.Utsname, as strings

func Uname 

func Uname() (*Utsname, error)

Uname returns Utsname as strings

type WebSocketMirrorReader 

type WebSocketMirrorReader func(conn *websocket.Conn, r io.ReadCloser, readDone chan<- bool)

WebsocketMirror allows mirroring a reader to a websocket and taking the result and writing it to a writer. This function allows for multiple mirrorings and correctly negotiates stream endings. However, it means any websocket.Conns passed to it are live when it returns, and must be closed explicitly.

type WebSocketMirrorWriter 

type WebSocketMirrorWriter func(conn *websocket.Conn, w io.WriteCloser, writeDone chan<- bool)

type WebsocketIO 

type WebsocketIO struct {
	Conn *websocket.Conn
	// contains filtered or unexported fields
}

WebsocketIO is a wrapper implementing ReadWriteCloser on top of websocket

func (*WebsocketIO) Close 

func (w *WebsocketIO) Close() error

Close sends a control message indicating the stream is finished, but it does not actually close the socket.

func (*WebsocketIO) Read 

func (w *WebsocketIO) Read(p []byte) (n int, err error)

func (*WebsocketIO) Write 

func (w *WebsocketIO) Write(p []byte) (n int, err error)

Source Files

View all Source files

Directories

Path Synopsis
Package api contains Go structs for all LXD API objects Overview This package has Go structs for every API object, all the various structs are named after the object they represent and some variations of those structs exist for initial object creation, object update and object retrieval.
 Package api contains Go structs for all LXD API objects Overview This package has Go structs for every API object, all the various structs are named after the object they represent and some variations of those structs exist for initial object creation, object update and object retrieval.
Package dnsutil copied from coredns project https://github.com/coredns/coredns/blob/master/plugin/pkg/dnsutil/reverse.go
 Package dnsutil copied from coredns project https://github.com/coredns/coredns/blob/master/plugin/pkg/dnsutil/reverse.go
db
file
Package file contains helpers to write auto-generated Go source files.
 Package file contains helpers to write auto-generated Go source files.
lex
stack
Package stack implements utilities to capture, manipulate, and format call stacks.
 Package stack implements utilities to capture, manipulate, and format call stacks.
term
Package subtest provides a backwards-compatible way to run subtests.
 Package subtest provides a backwards-compatible way to run subtests.

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