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mdlayher/netlink
attribute.go
Uint8
func (ae *AttributeEncoder) Uint8(typ uint16, v uint8) { if ae.err != nil { return } ae.attrs = append(ae.attrs, Attribute{ Type: typ, Data: []byte{v}, }) }
go
func (ae *AttributeEncoder) Uint8(typ uint16, v uint8) { if ae.err != nil { return } ae.attrs = append(ae.attrs, Attribute{ Type: typ, Data: []byte{v}, }) }
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// Uint8 encodes uint8 data into an Attribute specified by typ.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/attribute.go#L331-L340
train
mdlayher/netlink
attribute.go
Uint16
func (ae *AttributeEncoder) Uint16(typ uint16, v uint16) { if ae.err != nil { return } b := make([]byte, 2) ae.ByteOrder.PutUint16(b, v) ae.attrs = append(ae.attrs, Attribute{ Type: typ, Data: b, }) }
go
func (ae *AttributeEncoder) Uint16(typ uint16, v uint16) { if ae.err != nil { return } b := make([]byte, 2) ae.ByteOrder.PutUint16(b, v) ae.attrs = append(ae.attrs, Attribute{ Type: typ, Data: b, }) }
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// Uint16 encodes uint16 data into an Attribute specified by typ.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/attribute.go#L343-L355
train
mdlayher/netlink
attribute.go
Uint32
func (ae *AttributeEncoder) Uint32(typ uint16, v uint32) { if ae.err != nil { return } b := make([]byte, 4) ae.ByteOrder.PutUint32(b, v) ae.attrs = append(ae.attrs, Attribute{ Type: typ, Data: b, }) }
go
func (ae *AttributeEncoder) Uint32(typ uint16, v uint32) { if ae.err != nil { return } b := make([]byte, 4) ae.ByteOrder.PutUint32(b, v) ae.attrs = append(ae.attrs, Attribute{ Type: typ, Data: b, }) }
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// Uint32 encodes uint32 data into an Attribute specified by typ.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/attribute.go#L358-L370
train
mdlayher/netlink
attribute.go
Uint64
func (ae *AttributeEncoder) Uint64(typ uint16, v uint64) { if ae.err != nil { return } b := make([]byte, 8) ae.ByteOrder.PutUint64(b, v) ae.attrs = append(ae.attrs, Attribute{ Type: typ, Data: b, }) }
go
func (ae *AttributeEncoder) Uint64(typ uint16, v uint64) { if ae.err != nil { return } b := make([]byte, 8) ae.ByteOrder.PutUint64(b, v) ae.attrs = append(ae.attrs, Attribute{ Type: typ, Data: b, }) }
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// Uint64 encodes uint64 data into an Attribute specified by typ.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/attribute.go#L373-L385
train
mdlayher/netlink
attribute.go
String
func (ae *AttributeEncoder) String(typ uint16, s string) { if ae.err != nil { return } ae.attrs = append(ae.attrs, Attribute{ Type: typ, Data: nlenc.Bytes(s), }) }
go
func (ae *AttributeEncoder) String(typ uint16, s string) { if ae.err != nil { return } ae.attrs = append(ae.attrs, Attribute{ Type: typ, Data: nlenc.Bytes(s), }) }
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// String encodes string s as a null-terminated string into an Attribute // specified by typ.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/attribute.go#L389-L398
train
mdlayher/netlink
attribute.go
Bytes
func (ae *AttributeEncoder) Bytes(typ uint16, b []byte) { if ae.err != nil { return } ae.attrs = append(ae.attrs, Attribute{ Type: typ, Data: b, }) }
go
func (ae *AttributeEncoder) Bytes(typ uint16, b []byte) { if ae.err != nil { return } ae.attrs = append(ae.attrs, Attribute{ Type: typ, Data: b, }) }
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// Bytes embeds raw byte data into an Attribute specified by typ.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/attribute.go#L401-L410
train
mdlayher/netlink
attribute.go
Encode
func (ae *AttributeEncoder) Encode() ([]byte, error) { if ae.err != nil { return nil, ae.err } return MarshalAttributes(ae.attrs) }
go
func (ae *AttributeEncoder) Encode() ([]byte, error) { if ae.err != nil { return nil, ae.err } return MarshalAttributes(ae.attrs) }
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// Encode returns the encoded bytes representing the attributes.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/attribute.go#L436-L442
train
mdlayher/netlink
conn.go
Dial
func Dial(family int, config *Config) (*Conn, error) { // Use OS-specific dial() to create Socket c, pid, err := dial(family, config) if err != nil { return nil, err } return NewConn(c, pid), nil }
go
func Dial(family int, config *Config) (*Conn, error) { // Use OS-specific dial() to create Socket c, pid, err := dial(family, config) if err != nil { return nil, err } return NewConn(c, pid), nil }
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// Dial dials a connection to netlink, using the specified netlink family. // Config specifies optional configuration for Conn. If config is nil, a default // configuration will be used.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn.go#L53-L61
train
mdlayher/netlink
conn.go
NewConn
func NewConn(sock Socket, pid uint32) *Conn { // Seed the sequence number using a random number generator. r := rand.New(rand.NewSource(time.Now().UnixNano())) seq := r.Uint32() // Configure a debugger if arguments are set. var d *debugger if len(debugArgs) > 0 { d = newDebugger(debugArgs) } return &Conn{ ...
go
func NewConn(sock Socket, pid uint32) *Conn { // Seed the sequence number using a random number generator. r := rand.New(rand.NewSource(time.Now().UnixNano())) seq := r.Uint32() // Configure a debugger if arguments are set. var d *debugger if len(debugArgs) > 0 { d = newDebugger(debugArgs) } return &Conn{ ...
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// NewConn creates a Conn using the specified Socket and PID for netlink // communications. // // NewConn is primarily useful for tests. Most applications should use // Dial instead.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn.go#L68-L85
train
mdlayher/netlink
conn.go
debug
func (c *Conn) debug(fn func(d *debugger)) { if c.d == nil { return } fn(c.d) }
go
func (c *Conn) debug(fn func(d *debugger)) { if c.d == nil { return } fn(c.d) }
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// debug executes fn with the debugger if the debugger is not nil.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn.go#L88-L94
train
mdlayher/netlink
conn.go
SendMessages
func (c *Conn) SendMessages(messages []Message) ([]Message, error) { // Wait for any concurrent calls to Execute to finish before proceeding. c.mu.RLock() defer c.mu.RUnlock() for idx, m := range messages { ml := nlmsgLength(len(m.Data)) // TODO(mdlayher): fine-tune this limit. if ml > (1024 * 32) { retu...
go
func (c *Conn) SendMessages(messages []Message) ([]Message, error) { // Wait for any concurrent calls to Execute to finish before proceeding. c.mu.RLock() defer c.mu.RUnlock() for idx, m := range messages { ml := nlmsgLength(len(m.Data)) // TODO(mdlayher): fine-tune this limit. if ml > (1024 * 32) { retu...
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// SendMessages sends multiple Messages to netlink. The handling of // a Header's Length, Sequence and PID fields is the same as when // calling Send.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn.go#L144-L175
train
mdlayher/netlink
conn.go
Send
func (c *Conn) Send(message Message) (Message, error) { // Wait for any concurrent calls to Execute to finish before proceeding. c.mu.RLock() defer c.mu.RUnlock() return c.lockedSend(message) }
go
func (c *Conn) Send(message Message) (Message, error) { // Wait for any concurrent calls to Execute to finish before proceeding. c.mu.RLock() defer c.mu.RUnlock() return c.lockedSend(message) }
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// Send sends a single Message to netlink. In most cases, a Header's Length, // Sequence, and PID fields should be set to 0, so they can be populated // automatically before the Message is sent. On success, Send returns a copy // of the Message with all parameters populated, for later validation. // // If Header.Leng...
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn.go#L190-L196
train
mdlayher/netlink
conn.go
lockedSend
func (c *Conn) lockedSend(message Message) (Message, error) { ml := nlmsgLength(len(message.Data)) // TODO(mdlayher): fine-tune this limit. if ml > (1024 * 32) { return Message{}, errors.New("netlink message data too large") } c.fixMsg(&message, ml) c.debug(func(d *debugger) { d.debugf(1, "send: %+v", mess...
go
func (c *Conn) lockedSend(message Message) (Message, error) { ml := nlmsgLength(len(message.Data)) // TODO(mdlayher): fine-tune this limit. if ml > (1024 * 32) { return Message{}, errors.New("netlink message data too large") } c.fixMsg(&message, ml) c.debug(func(d *debugger) { d.debugf(1, "send: %+v", mess...
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// lockedSend implements Send, but must be called with c.mu acquired for reading. // We rely on the kernel to deal with concurrent reads and writes to the netlink // socket itself.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn.go#L201-L224
train
mdlayher/netlink
conn.go
Receive
func (c *Conn) Receive() ([]Message, error) { // Wait for any concurrent calls to Execute to finish before proceeding. c.mu.RLock() defer c.mu.RUnlock() return c.lockedReceive() }
go
func (c *Conn) Receive() ([]Message, error) { // Wait for any concurrent calls to Execute to finish before proceeding. c.mu.RLock() defer c.mu.RUnlock() return c.lockedReceive() }
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// Receive receives one or more messages from netlink. Multi-part messages are // handled transparently and returned as a single slice of Messages, with the // final empty "multi-part done" message removed. // // If any of the messages indicate a netlink error, that error will be returned.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn.go#L231-L237
train
mdlayher/netlink
conn.go
lockedReceive
func (c *Conn) lockedReceive() ([]Message, error) { msgs, err := c.receive() if err != nil { c.debug(func(d *debugger) { d.debugf(1, "recv: err: %v", err) }) return nil, err } c.debug(func(d *debugger) { for _, m := range msgs { d.debugf(1, "recv: %+v", m) } }) // When using nltest, it's possib...
go
func (c *Conn) lockedReceive() ([]Message, error) { msgs, err := c.receive() if err != nil { c.debug(func(d *debugger) { d.debugf(1, "recv: err: %v", err) }) return nil, err } c.debug(func(d *debugger) { for _, m := range msgs { d.debugf(1, "recv: %+v", m) } }) // When using nltest, it's possib...
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// lockedReceive implements Receive, but must be called with c.mu acquired for reading. // We rely on the kernel to deal with concurrent reads and writes to the netlink // socket itself.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn.go#L242-L270
train
mdlayher/netlink
conn.go
receive
func (c *Conn) receive() ([]Message, error) { // NB: All non-nil errors returned from this function *must* be of type // OpError in order to maintain the appropriate contract with callers of // this package. // // This contract also applies to functions called within this function, // such as checkMessage. var ...
go
func (c *Conn) receive() ([]Message, error) { // NB: All non-nil errors returned from this function *must* be of type // OpError in order to maintain the appropriate contract with callers of // this package. // // This contract also applies to functions called within this function, // such as checkMessage. var ...
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// receive is the internal implementation of Conn.Receive, which can be called // recursively to handle multi-part messages.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn.go#L274-L316
train
mdlayher/netlink
conn.go
JoinGroup
func (c *Conn) JoinGroup(group uint32) error { conn, ok := c.sock.(groupJoinLeaver) if !ok { return notSupported("join-group") } return newOpError("join-group", conn.JoinGroup(group)) }
go
func (c *Conn) JoinGroup(group uint32) error { conn, ok := c.sock.(groupJoinLeaver) if !ok { return notSupported("join-group") } return newOpError("join-group", conn.JoinGroup(group)) }
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// JoinGroup joins a netlink multicast group by its ID.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn.go#L327-L334
train
mdlayher/netlink
conn.go
SetBPF
func (c *Conn) SetBPF(filter []bpf.RawInstruction) error { conn, ok := c.sock.(bpfSetter) if !ok { return notSupported("set-bpf") } return newOpError("set-bpf", conn.SetBPF(filter)) }
go
func (c *Conn) SetBPF(filter []bpf.RawInstruction) error { conn, ok := c.sock.(bpfSetter) if !ok { return notSupported("set-bpf") } return newOpError("set-bpf", conn.SetBPF(filter)) }
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// SetBPF attaches an assembled BPF program to a Conn.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn.go#L354-L361
train
mdlayher/netlink
conn.go
RemoveBPF
func (c *Conn) RemoveBPF() error { conn, ok := c.sock.(bpfSetter) if !ok { return notSupported("remove-bpf") } return newOpError("remove-bpf", conn.RemoveBPF()) }
go
func (c *Conn) RemoveBPF() error { conn, ok := c.sock.(bpfSetter) if !ok { return notSupported("remove-bpf") } return newOpError("remove-bpf", conn.RemoveBPF()) }
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// RemoveBPF removes a BPF filter from a Conn.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn.go#L364-L371
train
mdlayher/netlink
conn.go
SetDeadline
func (c *Conn) SetDeadline(t time.Time) error { conn, ok := c.sock.(deadlineSetter) if !ok { return notSupported("set-deadline") } return newOpError("set-deadline", conn.SetDeadline(t)) }
go
func (c *Conn) SetDeadline(t time.Time) error { conn, ok := c.sock.(deadlineSetter) if !ok { return notSupported("set-deadline") } return newOpError("set-deadline", conn.SetDeadline(t)) }
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// SetDeadline sets the read and write deadlines associated with the connection. // // Deadline functionality is only supported on Go 1.12+. Calling this function // on older versions of Go will result in an error.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn.go#L385-L392
train
mdlayher/netlink
conn.go
fixMsg
func (c *Conn) fixMsg(m *Message, ml int) { if m.Header.Length == 0 { m.Header.Length = uint32(nlmsgAlign(ml)) } if m.Header.Sequence == 0 { m.Header.Sequence = c.nextSequence() } if m.Header.PID == 0 { m.Header.PID = c.pid } }
go
func (c *Conn) fixMsg(m *Message, ml int) { if m.Header.Length == 0 { m.Header.Length = uint32(nlmsgAlign(ml)) } if m.Header.Sequence == 0 { m.Header.Sequence = c.nextSequence() } if m.Header.PID == 0 { m.Header.PID = c.pid } }
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// fixMsg updates the fields of m using the logic specified in Send.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn.go#L513-L525
train
mdlayher/netlink
conn.go
Validate
func Validate(request Message, replies []Message) error { for _, m := range replies { // Check for mismatched sequence, unless: // - request had no sequence, meaning we are probably validating // a multicast reply if m.Header.Sequence != request.Header.Sequence && request.Header.Sequence != 0 { return...
go
func Validate(request Message, replies []Message) error { for _, m := range replies { // Check for mismatched sequence, unless: // - request had no sequence, meaning we are probably validating // a multicast reply if m.Header.Sequence != request.Header.Sequence && request.Header.Sequence != 0 { return...
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// Validate validates one or more reply Messages against a request Message, // ensuring that they contain matching sequence numbers and PIDs.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn.go#L535-L555
train
mdlayher/netlink
errors.go
IsNotExist
func IsNotExist(err error) bool { switch err := err.(type) { case *OpError: // TODO(mdlayher): more error handling logic? // Unwrap the inner error and use the stdlib's logic. return os.IsNotExist(err.Err) default: return os.IsNotExist(err) } }
go
func IsNotExist(err error) bool { switch err := err.(type) { case *OpError: // TODO(mdlayher): more error handling logic? // Unwrap the inner error and use the stdlib's logic. return os.IsNotExist(err.Err) default: return os.IsNotExist(err) } }
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// IsNotExist determines if an error is produced as the result of querying some // file, object, resource, etc. which does not exist. Users of this package // should always use netlink.IsNotExist, rather than os.IsNotExist, when // checking for specific netlink-related errors. // // Errors types created by this packag...
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/errors.go#L35-L45
train
mdlayher/netlink
errors.go
Temporary
func (e *OpError) Temporary() bool { if ne, ok := e.Err.(*os.SyscallError); ok { t, ok := ne.Err.(temporary) return ok && t.Temporary() } t, ok := e.Err.(temporary) return ok && t.Temporary() }
go
func (e *OpError) Temporary() bool { if ne, ok := e.Err.(*os.SyscallError); ok { t, ok := ne.Err.(temporary) return ok && t.Temporary() } t, ok := e.Err.(temporary) return ok && t.Temporary() }
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// Temporary reports whether an operation may succeed if retried.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/errors.go#L112-L119
train
mdlayher/netlink
netns_linux.go
setThreadNetNS
func setThreadNetNS(fd int) error { return os.NewSyscallError("setns", unix.Setns(fd, unix.CLONE_NEWNET)) }
go
func setThreadNetNS(fd int) error { return os.NewSyscallError("setns", unix.Setns(fd, unix.CLONE_NEWNET)) }
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// setThreadNetNS sets the network namespace of the thread of the current goroutine to // the namespace described by the user-provided file descriptor.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/netns_linux.go#L25-L27
train
mdlayher/netlink
conn_linux.go
dial
func dial(family int, config *Config) (*conn, uint32, error) { // Prepare sysSocket's internal loop and create the socket. // // The conditional is inverted because a zero value of false is desired // if no config, but it's easier to interpret within this code when the // value is inverted. if config == nil { c...
go
func dial(family int, config *Config) (*conn, uint32, error) { // Prepare sysSocket's internal loop and create the socket. // // The conditional is inverted because a zero value of false is desired // if no config, but it's easier to interpret within this code when the // value is inverted. if config == nil { c...
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// dial is the entry point for Dial. dial opens a netlink socket using // system calls, and returns its PID.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn_linux.go#L49-L69
train
mdlayher/netlink
conn_linux.go
bind
func bind(s socket, config *Config) (*conn, uint32, error) { if config == nil { config = &Config{} } addr := &unix.SockaddrNetlink{ Family: unix.AF_NETLINK, Groups: config.Groups, } // Socket must be closed in the event of any system call errors, to avoid // leaking file descriptors. if err := s.Bind(ad...
go
func bind(s socket, config *Config) (*conn, uint32, error) { if config == nil { config = &Config{} } addr := &unix.SockaddrNetlink{ Family: unix.AF_NETLINK, Groups: config.Groups, } // Socket must be closed in the event of any system call errors, to avoid // leaking file descriptors. if err := s.Bind(ad...
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// bind binds a connection to netlink using the input socket, which may be // a system call implementation or a mocked one for tests.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn_linux.go#L73-L103
train
mdlayher/netlink
conn_linux.go
SendMessages
func (c *conn) SendMessages(messages []Message) error { var buf []byte for _, m := range messages { b, err := m.MarshalBinary() if err != nil { return err } buf = append(buf, b...) } addr := &unix.SockaddrNetlink{ Family: unix.AF_NETLINK, } return os.NewSyscallError("sendmsg", c.s.Sendmsg(buf, nil...
go
func (c *conn) SendMessages(messages []Message) error { var buf []byte for _, m := range messages { b, err := m.MarshalBinary() if err != nil { return err } buf = append(buf, b...) } addr := &unix.SockaddrNetlink{ Family: unix.AF_NETLINK, } return os.NewSyscallError("sendmsg", c.s.Sendmsg(buf, nil...
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// SendMessages serializes multiple Messages and sends them to netlink.
[ "SendMessages", "serializes", "multiple", "Messages", "and", "sends", "them", "to", "netlink", "." ]
b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn_linux.go#L106-L122
train
mdlayher/netlink
conn_linux.go
Send
func (c *conn) Send(m Message) error { b, err := m.MarshalBinary() if err != nil { return err } addr := &unix.SockaddrNetlink{ Family: unix.AF_NETLINK, } return os.NewSyscallError("sendmsg", c.s.Sendmsg(b, nil, addr, 0)) }
go
func (c *conn) Send(m Message) error { b, err := m.MarshalBinary() if err != nil { return err } addr := &unix.SockaddrNetlink{ Family: unix.AF_NETLINK, } return os.NewSyscallError("sendmsg", c.s.Sendmsg(b, nil, addr, 0)) }
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// Send sends a single Message to netlink.
[ "Send", "sends", "a", "single", "Message", "to", "netlink", "." ]
b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn_linux.go#L125-L136
train
mdlayher/netlink
conn_linux.go
Receive
func (c *conn) Receive() ([]Message, error) { b := make([]byte, os.Getpagesize()) for { // Peek at the buffer to see how many bytes are available. // // TODO(mdlayher): deal with OOB message data if available, such as // when PacketInfo ConnOption is true. n, _, _, _, err := c.s.Recvmsg(b, nil, unix.MSG_PEE...
go
func (c *conn) Receive() ([]Message, error) { b := make([]byte, os.Getpagesize()) for { // Peek at the buffer to see how many bytes are available. // // TODO(mdlayher): deal with OOB message data if available, such as // when PacketInfo ConnOption is true. n, _, _, _, err := c.s.Recvmsg(b, nil, unix.MSG_PEE...
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// Receive receives one or more Messages from netlink.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn_linux.go#L139-L184
train
mdlayher/netlink
conn_linux.go
JoinGroup
func (c *conn) JoinGroup(group uint32) error { return os.NewSyscallError("setsockopt", c.s.SetSockoptInt( unix.SOL_NETLINK, unix.NETLINK_ADD_MEMBERSHIP, int(group), )) }
go
func (c *conn) JoinGroup(group uint32) error { return os.NewSyscallError("setsockopt", c.s.SetSockoptInt( unix.SOL_NETLINK, unix.NETLINK_ADD_MEMBERSHIP, int(group), )) }
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// JoinGroup joins a multicast group by ID.
[ "JoinGroup", "joins", "a", "multicast", "group", "by", "ID", "." ]
b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn_linux.go#L202-L208
train
mdlayher/netlink
conn_linux.go
LeaveGroup
func (c *conn) LeaveGroup(group uint32) error { return os.NewSyscallError("setsockopt", c.s.SetSockoptInt( unix.SOL_NETLINK, unix.NETLINK_DROP_MEMBERSHIP, int(group), )) }
go
func (c *conn) LeaveGroup(group uint32) error { return os.NewSyscallError("setsockopt", c.s.SetSockoptInt( unix.SOL_NETLINK, unix.NETLINK_DROP_MEMBERSHIP, int(group), )) }
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// LeaveGroup leaves a multicast group by ID.
[ "LeaveGroup", "leaves", "a", "multicast", "group", "by", "ID", "." ]
b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn_linux.go#L211-L217
train
mdlayher/netlink
conn_linux.go
SetBPF
func (c *conn) SetBPF(filter []bpf.RawInstruction) error { prog := unix.SockFprog{ Len: uint16(len(filter)), Filter: (*unix.SockFilter)(unsafe.Pointer(&filter[0])), } return os.NewSyscallError("setsockopt", c.s.SetSockoptSockFprog( unix.SOL_SOCKET, unix.SO_ATTACH_FILTER, &prog, )) }
go
func (c *conn) SetBPF(filter []bpf.RawInstruction) error { prog := unix.SockFprog{ Len: uint16(len(filter)), Filter: (*unix.SockFilter)(unsafe.Pointer(&filter[0])), } return os.NewSyscallError("setsockopt", c.s.SetSockoptSockFprog( unix.SOL_SOCKET, unix.SO_ATTACH_FILTER, &prog, )) }
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// SetBPF attaches an assembled BPF program to a conn.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn_linux.go#L220-L231
train
mdlayher/netlink
conn_linux.go
RemoveBPF
func (c *conn) RemoveBPF() error { // 0 argument is ignored by SO_DETACH_FILTER. return os.NewSyscallError("setsockopt", c.s.SetSockoptInt( unix.SOL_SOCKET, unix.SO_DETACH_FILTER, 0, )) }
go
func (c *conn) RemoveBPF() error { // 0 argument is ignored by SO_DETACH_FILTER. return os.NewSyscallError("setsockopt", c.s.SetSockoptInt( unix.SOL_SOCKET, unix.SO_DETACH_FILTER, 0, )) }
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// RemoveBPF removes a BPF filter from a conn.
[ "RemoveBPF", "removes", "a", "BPF", "filter", "from", "a", "conn", "." ]
b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn_linux.go#L234-L241
train
mdlayher/netlink
conn_linux.go
SetWriteBuffer
func (c *conn) SetWriteBuffer(bytes int) error { return os.NewSyscallError("setsockopt", c.s.SetSockoptInt( unix.SOL_SOCKET, unix.SO_SNDBUF, bytes, )) }
go
func (c *conn) SetWriteBuffer(bytes int) error { return os.NewSyscallError("setsockopt", c.s.SetSockoptInt( unix.SOL_SOCKET, unix.SO_SNDBUF, bytes, )) }
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// SetReadBuffer sets the size of the operating system's transmit buffer // associated with the Conn.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn_linux.go#L287-L293
train
mdlayher/netlink
conn_linux.go
linuxOption
func linuxOption(o ConnOption) (int, bool) { switch o { case PacketInfo: return unix.NETLINK_PKTINFO, true case BroadcastError: return unix.NETLINK_BROADCAST_ERROR, true case NoENOBUFS: return unix.NETLINK_NO_ENOBUFS, true case ListenAllNSID: return unix.NETLINK_LISTEN_ALL_NSID, true case CapAcknowledge: ...
go
func linuxOption(o ConnOption) (int, bool) { switch o { case PacketInfo: return unix.NETLINK_PKTINFO, true case BroadcastError: return unix.NETLINK_BROADCAST_ERROR, true case NoENOBUFS: return unix.NETLINK_NO_ENOBUFS, true case ListenAllNSID: return unix.NETLINK_LISTEN_ALL_NSID, true case CapAcknowledge: ...
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// linuxOption converts a ConnOption to its Linux value.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn_linux.go#L296-L311
train
mdlayher/netlink
conn_linux.go
newSysSocket
func newSysSocket(config *Config) (*sysSocket, error) { g, err := newLockedNetNSGoroutine(config.NetNS) if err != nil { return nil, err } return &sysSocket{ g: g, }, nil }
go
func newSysSocket(config *Config) (*sysSocket, error) { g, err := newLockedNetNSGoroutine(config.NetNS) if err != nil { return nil, err } return &sysSocket{ g: g, }, nil }
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// newSysSocket creates a sysSocket that optionally locks its internal goroutine // to a single thread.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn_linux.go#L338-L346
train
mdlayher/netlink
conn_linux.go
do
func (s *sysSocket) do(f func()) error { // All operations handled by this function are assumed to only // read from s.done. s.mu.RLock() defer s.mu.RUnlock() if s.closed { return syscall.EBADF } s.g.run(f) return nil }
go
func (s *sysSocket) do(f func()) error { // All operations handled by this function are assumed to only // read from s.done. s.mu.RLock() defer s.mu.RUnlock() if s.closed { return syscall.EBADF } s.g.run(f) return nil }
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// do runs f in a worker goroutine which can be locked to one thread.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn_linux.go#L349-L361
train
mdlayher/netlink
conn_linux.go
read
func (s *sysSocket) read(f func(fd int) bool) error { s.mu.RLock() defer s.mu.RUnlock() if s.closed { return syscall.EBADF } var err error s.g.run(func() { err = fdread(s.fd, f) }) return err }
go
func (s *sysSocket) read(f func(fd int) bool) error { s.mu.RLock() defer s.mu.RUnlock() if s.closed { return syscall.EBADF } var err error s.g.run(func() { err = fdread(s.fd, f) }) return err }
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// read executes f, a read function, against the associated file descriptor.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn_linux.go#L364-L377
train
mdlayher/netlink
conn_linux.go
control
func (s *sysSocket) control(f func(fd int)) error { s.mu.RLock() defer s.mu.RUnlock() if s.closed { return syscall.EBADF } var err error s.g.run(func() { err = fdcontrol(s.fd, f) }) return err }
go
func (s *sysSocket) control(f func(fd int)) error { s.mu.RLock() defer s.mu.RUnlock() if s.closed { return syscall.EBADF } var err error s.g.run(func() { err = fdcontrol(s.fd, f) }) return err }
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// control executes f, a control function, against the associated file descriptor.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn_linux.go#L396-L409
train
mdlayher/netlink
conn_linux.go
run
func (g *lockedNetNSGoroutine) run(f func()) { done := make(chan struct{}) g.funcC <- func() { defer close(done) f() } <-done }
go
func (g *lockedNetNSGoroutine) run(f func()) { done := make(chan struct{}) g.funcC <- func() { defer close(done) f() } <-done }
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// run runs f on the worker goroutine.
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b540351f6c5108aa445eaa6677010703c7294f8d
https://github.com/mdlayher/netlink/blob/b540351f6c5108aa445eaa6677010703c7294f8d/conn_linux.go#L670-L677
train
looplab/eventhorizon
repo/version/repo.go
Find
func (r *Repo) Find(ctx context.Context, id uuid.UUID) (eh.Entity, error) { // If there is no min version set just return the item as normally. minVersion, ok := eh.MinVersionFromContext(ctx) if !ok || minVersion < 1 { return r.ReadWriteRepo.Find(ctx, id) } // Try to get the correct version, retry with exponent...
go
func (r *Repo) Find(ctx context.Context, id uuid.UUID) (eh.Entity, error) { // If there is no min version set just return the item as normally. minVersion, ok := eh.MinVersionFromContext(ctx) if !ok || minVersion < 1 { return r.ReadWriteRepo.Find(ctx, id) } // Try to get the correct version, retry with exponent...
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// Find implements the Find method of the eventhorizon.ReadModel interface. // If the context contains a min version set by WithMinVersion it will only // return an item if its version is at least min version. If a timeout or // deadline is set on the context it will repetedly try to get the item until // either the ve...
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/repo/version/repo.go#L48-L83
train
looplab/eventhorizon
repo/version/repo.go
findMinVersion
func (r *Repo) findMinVersion(ctx context.Context, id uuid.UUID, minVersion int) (eh.Entity, error) { entity, err := r.ReadWriteRepo.Find(ctx, id) if err != nil { return nil, err } versionable, ok := entity.(eh.Versionable) if !ok { return nil, eh.RepoError{ Err: eh.ErrEntityHasNoVersion, Namespac...
go
func (r *Repo) findMinVersion(ctx context.Context, id uuid.UUID, minVersion int) (eh.Entity, error) { entity, err := r.ReadWriteRepo.Find(ctx, id) if err != nil { return nil, err } versionable, ok := entity.(eh.Versionable) if !ok { return nil, eh.RepoError{ Err: eh.ErrEntityHasNoVersion, Namespac...
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// findMinVersion finds an item if it has a version and it is at least minVersion.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/repo/version/repo.go#L86-L108
train
looplab/eventhorizon
repo/version/repo.go
Repository
func Repository(repo eh.ReadRepo) *Repo { if repo == nil { return nil } if r, ok := repo.(*Repo); ok { return r } return Repository(repo.Parent()) }
go
func Repository(repo eh.ReadRepo) *Repo { if repo == nil { return nil } if r, ok := repo.(*Repo); ok { return r } return Repository(repo.Parent()) }
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// Repository returns a parent ReadRepo if there is one.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/repo/version/repo.go#L111-L121
train
looplab/eventhorizon
repo/mongodb/repo.go
NewRepoWithSession
func NewRepoWithSession(session *mgo.Session, dbPrefix, collection string) (*Repo, error) { if session == nil { return nil, ErrNoDBSession } r := &Repo{ session: session, dbPrefix: dbPrefix, collection: collection, } return r, nil }
go
func NewRepoWithSession(session *mgo.Session, dbPrefix, collection string) (*Repo, error) { if session == nil { return nil, ErrNoDBSession } r := &Repo{ session: session, dbPrefix: dbPrefix, collection: collection, } return r, nil }
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// NewRepoWithSession creates a new Repo with a session.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/repo/mongodb/repo.go#L64-L76
train
looplab/eventhorizon
repo/mongodb/repo.go
FindCustomIter
func (r *Repo) FindCustomIter(ctx context.Context, callback func(*mgo.Collection) *mgo.Query) (eh.Iter, error) { sess := r.session.Copy() if r.factoryFn == nil { return nil, eh.RepoError{ Err: ErrModelNotSet, Namespace: eh.NamespaceFromContext(ctx), } } collection := sess.DB(r.dbName(ctx)).C(r.col...
go
func (r *Repo) FindCustomIter(ctx context.Context, callback func(*mgo.Collection) *mgo.Query) (eh.Iter, error) { sess := r.session.Copy() if r.factoryFn == nil { return nil, eh.RepoError{ Err: ErrModelNotSet, Namespace: eh.NamespaceFromContext(ctx), } } collection := sess.DB(r.dbName(ctx)).C(r.col...
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// FindCustomIter returns a mgo cursor you can use to stream results of very large datasets
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/repo/mongodb/repo.go#L163-L187
train
looplab/eventhorizon
repo/mongodb/repo.go
FindCustom
func (r *Repo) FindCustom(ctx context.Context, callback func(*mgo.Collection) *mgo.Query) ([]interface{}, error) { sess := r.session.Copy() defer sess.Close() if r.factoryFn == nil { return nil, eh.RepoError{ Err: ErrModelNotSet, Namespace: eh.NamespaceFromContext(ctx), } } collection := sess.DB(...
go
func (r *Repo) FindCustom(ctx context.Context, callback func(*mgo.Collection) *mgo.Query) ([]interface{}, error) { sess := r.session.Copy() defer sess.Close() if r.factoryFn == nil { return nil, eh.RepoError{ Err: ErrModelNotSet, Namespace: eh.NamespaceFromContext(ctx), } } collection := sess.DB(...
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// FindCustom uses a callback to specify a custom query for returning models. // It can also be used to do queries that does not map to the model by executing // the query in the callback and returning nil to block a second execution of // the same query in FindCustom. Expect a ErrInvalidQuery if returning a nil // que...
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/repo/mongodb/repo.go#L194-L229
train
looplab/eventhorizon
repo/mongodb/repo.go
Collection
func (r *Repo) Collection(ctx context.Context, f func(*mgo.Collection) error) error { sess := r.session.Copy() defer sess.Close() c := sess.DB(r.dbName(ctx)).C(r.collection) if err := f(c); err != nil { return eh.RepoError{ Err: err, Namespace: eh.NamespaceFromContext(ctx), } } return nil }
go
func (r *Repo) Collection(ctx context.Context, f func(*mgo.Collection) error) error { sess := r.session.Copy() defer sess.Close() c := sess.DB(r.dbName(ctx)).C(r.collection) if err := f(c); err != nil { return eh.RepoError{ Err: err, Namespace: eh.NamespaceFromContext(ctx), } } return nil }
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// Collection lets the function do custom actions on the collection.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/repo/mongodb/repo.go#L273-L286
train
looplab/eventhorizon
repo/mongodb/repo.go
Clear
func (r *Repo) Clear(ctx context.Context) error { if err := r.session.DB(r.dbName(ctx)).C(r.collection).DropCollection(); err != nil { return eh.RepoError{ Err: ErrCouldNotClearDB, BaseErr: err, Namespace: eh.NamespaceFromContext(ctx), } } return nil }
go
func (r *Repo) Clear(ctx context.Context) error { if err := r.session.DB(r.dbName(ctx)).C(r.collection).DropCollection(); err != nil { return eh.RepoError{ Err: ErrCouldNotClearDB, BaseErr: err, Namespace: eh.NamespaceFromContext(ctx), } } return nil }
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// Clear clears the read model database.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/repo/mongodb/repo.go#L294-L303
train
looplab/eventhorizon
context.go
NamespaceFromContext
func NamespaceFromContext(ctx context.Context) string { if ns, ok := ctx.Value(namespaceKey).(string); ok { return ns } return DefaultNamespace }
go
func NamespaceFromContext(ctx context.Context) string { if ns, ok := ctx.Value(namespaceKey).(string); ok { return ns } return DefaultNamespace }
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// NamespaceFromContext returns the namespace from the context, or the default // namespace.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/context.go#L78-L83
train
looplab/eventhorizon
context.go
NewContextWithNamespace
func NewContextWithNamespace(ctx context.Context, namespace string) context.Context { return context.WithValue(ctx, namespaceKey, namespace) }
go
func NewContextWithNamespace(ctx context.Context, namespace string) context.Context { return context.WithValue(ctx, namespaceKey, namespace) }
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// NewContextWithNamespace sets the namespace to use in the context. The // namespace is used to determine which database.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/context.go#L87-L89
train
looplab/eventhorizon
context.go
MinVersionFromContext
func MinVersionFromContext(ctx context.Context) (int, bool) { minVersion, ok := ctx.Value(minVersionKey).(int) return minVersion, ok }
go
func MinVersionFromContext(ctx context.Context) (int, bool) { minVersion, ok := ctx.Value(minVersionKey).(int) return minVersion, ok }
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// MinVersionFromContext returns the min version from the context.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/context.go#L92-L95
train
looplab/eventhorizon
context.go
NewContextWithMinVersion
func NewContextWithMinVersion(ctx context.Context, minVersion int) context.Context { return context.WithValue(ctx, minVersionKey, minVersion) }
go
func NewContextWithMinVersion(ctx context.Context, minVersion int) context.Context { return context.WithValue(ctx, minVersionKey, minVersion) }
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// NewContextWithMinVersion returns the context with min version set.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/context.go#L98-L100
train
looplab/eventhorizon
context.go
NewContextWithMinVersionWait
func NewContextWithMinVersionWait(ctx context.Context, minVersion int) (c context.Context, cancel func()) { ctx = context.WithValue(ctx, minVersionKey, minVersion) return context.WithTimeout(ctx, DefaultMinVersionDeadline) }
go
func NewContextWithMinVersionWait(ctx context.Context, minVersion int) (c context.Context, cancel func()) { ctx = context.WithValue(ctx, minVersionKey, minVersion) return context.WithTimeout(ctx, DefaultMinVersionDeadline) }
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// NewContextWithMinVersionWait returns the context with min version and a // default deadline set.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/context.go#L104-L107
train
looplab/eventhorizon
context.go
RegisterContextMarshaler
func RegisterContextMarshaler(f ContextMarshalFunc) { contextMarshalFuncsMu.Lock() defer contextMarshalFuncsMu.Unlock() contextMarshalFuncs = append(contextMarshalFuncs, f) }
go
func RegisterContextMarshaler(f ContextMarshalFunc) { contextMarshalFuncsMu.Lock() defer contextMarshalFuncsMu.Unlock() contextMarshalFuncs = append(contextMarshalFuncs, f) }
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// RegisterContextMarshaler registers a marshaler function used by MarshalContext.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/context.go#L123-L127
train
looplab/eventhorizon
context.go
MarshalContext
func MarshalContext(ctx context.Context) map[string]interface{} { contextMarshalFuncsMu.RLock() defer contextMarshalFuncsMu.RUnlock() allVals := map[string]interface{}{} for _, f := range contextMarshalFuncs { vals := map[string]interface{}{} f(ctx, vals) for key, val := range vals { if _, ok := allVals...
go
func MarshalContext(ctx context.Context) map[string]interface{} { contextMarshalFuncsMu.RLock() defer contextMarshalFuncsMu.RUnlock() allVals := map[string]interface{}{} for _, f := range contextMarshalFuncs { vals := map[string]interface{}{} f(ctx, vals) for key, val := range vals { if _, ok := allVals...
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// MarshalContext marshals a context into a map.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/context.go#L130-L149
train
looplab/eventhorizon
context.go
RegisterContextUnmarshaler
func RegisterContextUnmarshaler(f ContextUnmarshalFunc) { contextUnmarshalFuncsMu.Lock() defer contextUnmarshalFuncsMu.Unlock() contextUnmarshalFuncs = append(contextUnmarshalFuncs, f) }
go
func RegisterContextUnmarshaler(f ContextUnmarshalFunc) { contextUnmarshalFuncsMu.Lock() defer contextUnmarshalFuncsMu.Unlock() contextUnmarshalFuncs = append(contextUnmarshalFuncs, f) }
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// RegisterContextUnmarshaler registers a marshaler function used by UnmarshalContext.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/context.go#L156-L160
train
looplab/eventhorizon
context.go
UnmarshalContext
func UnmarshalContext(vals map[string]interface{}) context.Context { contextUnmarshalFuncsMu.RLock() defer contextUnmarshalFuncsMu.RUnlock() ctx := context.Background() if vals == nil { return ctx } for _, f := range contextUnmarshalFuncs { ctx = f(ctx, vals) } return ctx }
go
func UnmarshalContext(vals map[string]interface{}) context.Context { contextUnmarshalFuncsMu.RLock() defer contextUnmarshalFuncsMu.RUnlock() ctx := context.Background() if vals == nil { return ctx } for _, f := range contextUnmarshalFuncs { ctx = f(ctx, vals) } return ctx }
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// UnmarshalContext unmarshals a context from a map.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/context.go#L163-L177
train
looplab/eventhorizon
middleware/commandhandler/validator/commandhandler.go
NewMiddleware
func NewMiddleware() eh.CommandHandlerMiddleware { return eh.CommandHandlerMiddleware(func(h eh.CommandHandler) eh.CommandHandler { return eh.CommandHandlerFunc(func(ctx context.Context, cmd eh.Command) error { // Call the validation method if it exists if c, ok := cmd.(Command); ok { err := c.Validate() ...
go
func NewMiddleware() eh.CommandHandlerMiddleware { return eh.CommandHandlerMiddleware(func(h eh.CommandHandler) eh.CommandHandler { return eh.CommandHandlerFunc(func(ctx context.Context, cmd eh.Command) error { // Call the validation method if it exists if c, ok := cmd.(Command); ok { err := c.Validate() ...
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// NewMiddleware returns a new async handling middleware that validate commands // with its own validation method.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/middleware/commandhandler/validator/commandhandler.go#L25-L40
train
looplab/eventhorizon
middleware/commandhandler/validator/commandhandler.go
CommandWithValidation
func CommandWithValidation(cmd eh.Command, v func() error) Command { return &command{Command: cmd, validate: v} }
go
func CommandWithValidation(cmd eh.Command, v func() error) Command { return &command{Command: cmd, validate: v} }
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// CommandWithValidation returns a wrapped command with a validation method.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/middleware/commandhandler/validator/commandhandler.go#L51-L53
train
looplab/eventhorizon
mocks/mocks.go
NewAggregate
func NewAggregate(id uuid.UUID) *Aggregate { return &Aggregate{ ID: id, Commands: []eh.Command{}, } }
go
func NewAggregate(id uuid.UUID) *Aggregate { return &Aggregate{ ID: id, Commands: []eh.Command{}, } }
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// NewAggregate returns a new Aggregate.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/mocks/mocks.go#L66-L71
train
looplab/eventhorizon
mocks/mocks.go
HandleCommand
func (a *Aggregate) HandleCommand(ctx context.Context, cmd eh.Command) error { if a.Err != nil { return a.Err } a.Commands = append(a.Commands, cmd) a.Context = ctx return nil }
go
func (a *Aggregate) HandleCommand(ctx context.Context, cmd eh.Command) error { if a.Err != nil { return a.Err } a.Commands = append(a.Commands, cmd) a.Context = ctx return nil }
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// HandleCommand implements the HandleCommand method of the eventhorizon.Aggregate interface.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/mocks/mocks.go#L86-L93
train
looplab/eventhorizon
mocks/mocks.go
Reset
func (m *EventHandler) Reset() { m.Events = []eh.Event{} m.Context = context.Background() m.Time = time.Time{} }
go
func (m *EventHandler) Reset() { m.Events = []eh.Event{} m.Context = context.Background() m.Time = time.Time{} }
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// Reset resets the mock data.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/mocks/mocks.go#L231-L235
train
looplab/eventhorizon
mocks/mocks.go
Wait
func (m *EventHandler) Wait(d time.Duration) bool { select { case <-m.Recv: return true case <-time.After(d): return false } }
go
func (m *EventHandler) Wait(d time.Duration) bool { select { case <-m.Recv: return true case <-time.After(d): return false } }
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// Wait is a helper to wait some duration until for an event to be handled.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/mocks/mocks.go#L238-L245
train
looplab/eventhorizon
mocks/mocks.go
Load
func (m *AggregateStore) Load(ctx context.Context, aggregateType eh.AggregateType, id uuid.UUID) (eh.Aggregate, error) { if m.Err != nil { return nil, m.Err } m.Context = ctx return m.Aggregates[id], nil }
go
func (m *AggregateStore) Load(ctx context.Context, aggregateType eh.AggregateType, id uuid.UUID) (eh.Aggregate, error) { if m.Err != nil { return nil, m.Err } m.Context = ctx return m.Aggregates[id], nil }
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// Load implements the Load method of the eventhorizon.AggregateStore interface.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/mocks/mocks.go#L258-L264
train
looplab/eventhorizon
mocks/mocks.go
Save
func (m *AggregateStore) Save(ctx context.Context, aggregate eh.Aggregate) error { if m.Err != nil { return m.Err } m.Context = ctx m.Aggregates[aggregate.EntityID()] = aggregate return nil }
go
func (m *AggregateStore) Save(ctx context.Context, aggregate eh.Aggregate) error { if m.Err != nil { return m.Err } m.Context = ctx m.Aggregates[aggregate.EntityID()] = aggregate return nil }
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// Save implements the Save method of the eventhorizon.AggregateStore interface.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/mocks/mocks.go#L267-L274
train
looplab/eventhorizon
mocks/mocks.go
Save
func (r *Repo) Save(ctx context.Context, entity eh.Entity) error { r.SaveCalled = true if r.SaveErr != nil { return r.SaveErr } r.Entity = entity return nil }
go
func (r *Repo) Save(ctx context.Context, entity eh.Entity) error { r.SaveCalled = true if r.SaveErr != nil { return r.SaveErr } r.Entity = entity return nil }
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// Save implements the Save method of the eventhorizon.ReadRepo interface.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/mocks/mocks.go#L387-L394
train
looplab/eventhorizon
mocks/mocks.go
Remove
func (r *Repo) Remove(ctx context.Context, id uuid.UUID) error { r.RemoveCalled = true if r.SaveErr != nil { return r.SaveErr } r.Entity = nil return nil }
go
func (r *Repo) Remove(ctx context.Context, id uuid.UUID) error { r.RemoveCalled = true if r.SaveErr != nil { return r.SaveErr } r.Entity = nil return nil }
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// Remove implements the Remove method of the eventhorizon.ReadRepo interface.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/mocks/mocks.go#L397-L404
train
looplab/eventhorizon
mocks/mocks.go
WithContextOne
func WithContextOne(ctx context.Context, val string) context.Context { return context.WithValue(ctx, contextKeyOne, val) }
go
func WithContextOne(ctx context.Context, val string) context.Context { return context.WithValue(ctx, contextKeyOne, val) }
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// WithContextOne sets a value for One one the context.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/mocks/mocks.go#L413-L415
train
looplab/eventhorizon
mocks/mocks.go
ContextOne
func ContextOne(ctx context.Context) (string, bool) { val, ok := ctx.Value(contextKeyOne).(string) return val, ok }
go
func ContextOne(ctx context.Context) (string, bool) { val, ok := ctx.Value(contextKeyOne).(string) return val, ok }
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// ContextOne returns a value for One from the context.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/mocks/mocks.go#L418-L421
train
looplab/eventhorizon
mocks/mocks.go
init
func init() { eh.RegisterContextMarshaler(func(ctx context.Context, vals map[string]interface{}) { if val, ok := ContextOne(ctx); ok { vals[contextKeyOneStr] = val } }) eh.RegisterContextUnmarshaler(func(ctx context.Context, vals map[string]interface{}) context.Context { if val, ok := vals[contextKeyOneStr]...
go
func init() { eh.RegisterContextMarshaler(func(ctx context.Context, vals map[string]interface{}) { if val, ok := ContextOne(ctx); ok { vals[contextKeyOneStr] = val } }) eh.RegisterContextUnmarshaler(func(ctx context.Context, vals map[string]interface{}) context.Context { if val, ok := vals[contextKeyOneStr]...
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// Register the marshalers and unmarshalers for ContextOne.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/mocks/mocks.go#L429-L441
train
looplab/eventhorizon
eventbus/local/eventbus.go
NewEventBus
func NewEventBus(g *Group) *EventBus { if g == nil { g = NewGroup() } return &EventBus{ group: g, registered: map[eh.EventHandlerType]struct{}{}, errCh: make(chan eh.EventBusError, 100), } }
go
func NewEventBus(g *Group) *EventBus { if g == nil { g = NewGroup() } return &EventBus{ group: g, registered: map[eh.EventHandlerType]struct{}{}, errCh: make(chan eh.EventBusError, 100), } }
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// NewEventBus creates a EventBus.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/eventbus/local/eventbus.go#L40-L49
train
looplab/eventhorizon
eventbus/local/eventbus.go
channel
func (b *EventBus) channel(m eh.EventMatcher, h eh.EventHandler, observer bool) <-chan evt { b.registeredMu.Lock() defer b.registeredMu.Unlock() if m == nil { panic("matcher can't be nil") } if h == nil { panic("handler can't be nil") } if _, ok := b.registered[h.HandlerType()]; ok { panic(fmt.Sprintf("mu...
go
func (b *EventBus) channel(m eh.EventMatcher, h eh.EventHandler, observer bool) <-chan evt { b.registeredMu.Lock() defer b.registeredMu.Unlock() if m == nil { panic("matcher can't be nil") } if h == nil { panic("handler can't be nil") } if _, ok := b.registered[h.HandlerType()]; ok { panic(fmt.Sprintf("mu...
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// Checks the matcher and handler and gets the event channel from the group.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/eventbus/local/eventbus.go#L93-L113
train
looplab/eventhorizon
eventbus/local/eventbus.go
Close
func (g *Group) Close() { for _, ch := range g.bus { close(ch) } g.bus = nil }
go
func (g *Group) Close() { for _, ch := range g.bus { close(ch) } g.bus = nil }
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// Close all the open channels
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/eventbus/local/eventbus.go#L170-L175
train
looplab/eventhorizon
middleware/commandhandler/scheduler/commandhandler.go
CommandWithExecuteTime
func CommandWithExecuteTime(cmd eh.Command, t time.Time) Command { return &command{Command: cmd, t: t} }
go
func CommandWithExecuteTime(cmd eh.Command, t time.Time) Command { return &command{Command: cmd, t: t} }
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// CommandWithExecuteTime returns a wrapped command with a execution time set.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/middleware/commandhandler/scheduler/commandhandler.go#L68-L70
train
looplab/eventhorizon
examples/guestlist/domain/saga.go
NewResponseSaga
func NewResponseSaga(guestLimit int) *ResponseSaga { return &ResponseSaga{ acceptedGuests: map[uuid.UUID]bool{}, guestLimit: guestLimit, } }
go
func NewResponseSaga(guestLimit int) *ResponseSaga { return &ResponseSaga{ acceptedGuests: map[uuid.UUID]bool{}, guestLimit: guestLimit, } }
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// NewResponseSaga returns a new ResponseSage with a guest limit.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/examples/guestlist/domain/saga.go#L38-L43
train
looplab/eventhorizon
examples/guestlist/domain/saga.go
RunSaga
func (s *ResponseSaga) RunSaga(ctx context.Context, event eh.Event) []eh.Command { switch event.EventType() { case InviteAcceptedEvent: // Do nothing for already accepted guests. s.acceptedGuestsMu.RLock() ok, _ := s.acceptedGuests[event.AggregateID()] s.acceptedGuestsMu.RUnlock() if ok { return nil } ...
go
func (s *ResponseSaga) RunSaga(ctx context.Context, event eh.Event) []eh.Command { switch event.EventType() { case InviteAcceptedEvent: // Do nothing for already accepted guests. s.acceptedGuestsMu.RLock() ok, _ := s.acceptedGuests[event.AggregateID()] s.acceptedGuestsMu.RUnlock() if ok { return nil } ...
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// RunSaga implements the Run saga method of the Saga interface.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/examples/guestlist/domain/saga.go#L51-L80
train
looplab/eventhorizon
examples/guestlist/domain/logger.go
LoggingMiddleware
func LoggingMiddleware(h eh.CommandHandler) eh.CommandHandler { return eh.CommandHandlerFunc(func(ctx context.Context, cmd eh.Command) error { log.Printf("command: %#v", cmd) return h.HandleCommand(ctx, cmd) }) }
go
func LoggingMiddleware(h eh.CommandHandler) eh.CommandHandler { return eh.CommandHandlerFunc(func(ctx context.Context, cmd eh.Command) error { log.Printf("command: %#v", cmd) return h.HandleCommand(ctx, cmd) }) }
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// LoggingMiddleware is a tiny command handle middleware for logging.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/examples/guestlist/domain/logger.go#L25-L30
train
looplab/eventhorizon
repo/cache/repo.go
Notify
func (r *Repo) Notify(ctx context.Context, event eh.Event) { // Bust the cache on entity updates. ns := r.namespace(ctx) r.cacheMu.Lock() delete(r.cache[ns], event.AggregateID()) r.cacheMu.Unlock() }
go
func (r *Repo) Notify(ctx context.Context, event eh.Event) { // Bust the cache on entity updates. ns := r.namespace(ctx) r.cacheMu.Lock() delete(r.cache[ns], event.AggregateID()) r.cacheMu.Unlock() }
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// Notify implements the Notify method of the eventhorizon.Observer interface.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/repo/cache/repo.go#L47-L53
train
looplab/eventhorizon
repo/cache/repo.go
Find
func (r *Repo) Find(ctx context.Context, id uuid.UUID) (eh.Entity, error) { ns := r.namespace(ctx) // First check the cache. r.cacheMu.RLock() entity, ok := r.cache[ns][id] r.cacheMu.RUnlock() if ok { return entity, nil } // Fetch and store the entity in the cache. entity, err := r.ReadWriteRepo.Find(ctx, ...
go
func (r *Repo) Find(ctx context.Context, id uuid.UUID) (eh.Entity, error) { ns := r.namespace(ctx) // First check the cache. r.cacheMu.RLock() entity, ok := r.cache[ns][id] r.cacheMu.RUnlock() if ok { return entity, nil } // Fetch and store the entity in the cache. entity, err := r.ReadWriteRepo.Find(ctx, ...
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// Find implements the Find method of the eventhorizon.ReadModel interface.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/repo/cache/repo.go#L61-L82
train
looplab/eventhorizon
commandhandler/aggregate/commandhandler.go
NewCommandHandler
func NewCommandHandler(t eh.AggregateType, store eh.AggregateStore) (*CommandHandler, error) { if store == nil { return nil, ErrNilAggregateStore } h := &CommandHandler{ t: t, store: store, } return h, nil }
go
func NewCommandHandler(t eh.AggregateType, store eh.AggregateStore) (*CommandHandler, error) { if store == nil { return nil, ErrNilAggregateStore } h := &CommandHandler{ t: t, store: store, } return h, nil }
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// NewCommandHandler creates a new CommandHandler for an aggregate type.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/commandhandler/aggregate/commandhandler.go#L42-L52
train
looplab/eventhorizon
commandhandler/aggregate/commandhandler.go
HandleCommand
func (h *CommandHandler) HandleCommand(ctx context.Context, cmd eh.Command) error { err := eh.CheckCommand(cmd) if err != nil { return err } a, err := h.store.Load(ctx, h.t, cmd.AggregateID()) if err != nil { return err } else if a == nil { return eh.ErrAggregateNotFound } if err = a.HandleCommand(ctx, ...
go
func (h *CommandHandler) HandleCommand(ctx context.Context, cmd eh.Command) error { err := eh.CheckCommand(cmd) if err != nil { return err } a, err := h.store.Load(ctx, h.t, cmd.AggregateID()) if err != nil { return err } else if a == nil { return eh.ErrAggregateNotFound } if err = a.HandleCommand(ctx, ...
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// HandleCommand handles a command with the registered aggregate. // Returns ErrAggregateNotFound if no aggregate could be found.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/commandhandler/aggregate/commandhandler.go#L56-L74
train
looplab/eventhorizon
event.go
NewEvent
func NewEvent(eventType EventType, data EventData, timestamp time.Time) Event { return event{ eventType: eventType, data: data, timestamp: timestamp, } }
go
func NewEvent(eventType EventType, data EventData, timestamp time.Time) Event { return event{ eventType: eventType, data: data, timestamp: timestamp, } }
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// NewEvent creates a new event with a type and data, setting its timestamp.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/event.go#L62-L68
train
looplab/eventhorizon
event.go
NewEventForAggregate
func NewEventForAggregate(eventType EventType, data EventData, timestamp time.Time, aggregateType AggregateType, aggregateID uuid.UUID, version int) Event { return event{ eventType: eventType, data: data, timestamp: timestamp, aggregateType: aggregateType, aggregateID: aggregateID, vers...
go
func NewEventForAggregate(eventType EventType, data EventData, timestamp time.Time, aggregateType AggregateType, aggregateID uuid.UUID, version int) Event { return event{ eventType: eventType, data: data, timestamp: timestamp, aggregateType: aggregateType, aggregateID: aggregateID, vers...
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// NewEventForAggregate creates a new event with a type and data, setting its // timestamp. It also sets the aggregate data on it.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/event.go#L72-L82
train
looplab/eventhorizon
event.go
String
func (e event) String() string { return fmt.Sprintf("%s@%d", e.eventType, e.version) }
go
func (e event) String() string { return fmt.Sprintf("%s@%d", e.eventType, e.version) }
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/event.go#L127-L129
train
looplab/eventhorizon
event.go
UnregisterEventData
func UnregisterEventData(eventType EventType) { if eventType == EventType("") { panic("eventhorizon: attempt to unregister empty event type") } eventDataFactoriesMu.Lock() defer eventDataFactoriesMu.Unlock() if _, ok := eventDataFactories[eventType]; !ok { panic(fmt.Sprintf("eventhorizon: unregister of non-re...
go
func UnregisterEventData(eventType EventType) { if eventType == EventType("") { panic("eventhorizon: attempt to unregister empty event type") } eventDataFactoriesMu.Lock() defer eventDataFactoriesMu.Unlock() if _, ok := eventDataFactories[eventType]; !ok { panic(fmt.Sprintf("eventhorizon: unregister of non-re...
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// UnregisterEventData removes the registration of the event data factory for // a type. This is mainly useful in mainenance situations where the event data // needs to be switched in a migrations.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/event.go#L161-L172
train
looplab/eventhorizon
event.go
CreateEventData
func CreateEventData(eventType EventType) (EventData, error) { eventDataFactoriesMu.RLock() defer eventDataFactoriesMu.RUnlock() if factory, ok := eventDataFactories[eventType]; ok { return factory(), nil } return nil, ErrEventDataNotRegistered }
go
func CreateEventData(eventType EventType) (EventData, error) { eventDataFactoriesMu.RLock() defer eventDataFactoriesMu.RUnlock() if factory, ok := eventDataFactories[eventType]; ok { return factory(), nil } return nil, ErrEventDataNotRegistered }
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// CreateEventData creates an event data of a type using the factory registered // with RegisterEventData.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/event.go#L176-L183
train
looplab/eventhorizon
examples/todomvc/internal/domain/aggregate.go
ApplyEvent
func (a *Aggregate) ApplyEvent(ctx context.Context, event eh.Event) error { switch event.EventType() { case Created: a.created = true case Deleted: a.created = false case ItemAdded: data, ok := event.Data().(*ItemAddedData) if !ok { return errors.New("invalid event data") } a.items = append(a.items, ...
go
func (a *Aggregate) ApplyEvent(ctx context.Context, event eh.Event) error { switch event.EventType() { case Created: a.created = true case Deleted: a.created = false case ItemAdded: data, ok := event.Data().(*ItemAddedData) if !ok { return errors.New("invalid event data") } a.items = append(a.items, ...
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// ApplyEvent implements the ApplyEvent method of the // eventhorizon.Aggregate interface.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/examples/todomvc/internal/domain/aggregate.go#L155-L206
train
looplab/eventhorizon
examples/todomvc/internal/domain/projector.go
Project
func (p *Projector) Project(ctx context.Context, event eh.Event, entity eh.Entity) (eh.Entity, error) { model, ok := entity.(*TodoList) if !ok { return nil, errors.New("model is of incorrect type") } switch event.EventType() { case Created: // Set the ID when first created. model.ID = event.AggregateID() ...
go
func (p *Projector) Project(ctx context.Context, event eh.Event, entity eh.Entity) (eh.Entity, error) { model, ok := entity.(*TodoList) if !ok { return nil, errors.New("model is of incorrect type") } switch event.EventType() { case Created: // Set the ID when first created. model.ID = event.AggregateID() ...
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// Project implements the Project method of the eventhorizon.Projector interface.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/examples/todomvc/internal/domain/projector.go#L36-L102
train
looplab/eventhorizon
eventhandler/waiter/eventhandler.go
NewEventHandler
func NewEventHandler() *EventHandler { h := EventHandler{ inbox: make(chan eh.Event, 1), register: make(chan *EventListener), unregister: make(chan *EventListener), } go h.run() return &h }
go
func NewEventHandler() *EventHandler { h := EventHandler{ inbox: make(chan eh.Event, 1), register: make(chan *EventListener), unregister: make(chan *EventListener), } go h.run() return &h }
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// NewEventHandler returns a new EventHandler.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/eventhandler/waiter/eventhandler.go#L34-L42
train
looplab/eventhorizon
eventhandler/waiter/eventhandler.go
HandleEvent
func (h *EventHandler) HandleEvent(ctx context.Context, event eh.Event) error { h.inbox <- event return nil }
go
func (h *EventHandler) HandleEvent(ctx context.Context, event eh.Event) error { h.inbox <- event return nil }
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// HandleEvent implements the HandleEvent method of the eventhorizon.EventHandler interface. // It forwards events to the waiters so that they can match the events.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/eventhandler/waiter/eventhandler.go#L51-L54
train
looplab/eventhorizon
eventhandler/waiter/eventhandler.go
Listen
func (h *EventHandler) Listen(match func(eh.Event) bool) *EventListener { l := &EventListener{ id: uuid.New(), inbox: make(chan eh.Event, 1), match: match, unregister: h.unregister, } // Register us to the in-flight listeners. h.register <- l return l }
go
func (h *EventHandler) Listen(match func(eh.Event) bool) *EventListener { l := &EventListener{ id: uuid.New(), inbox: make(chan eh.Event, 1), match: match, unregister: h.unregister, } // Register us to the in-flight listeners. h.register <- l return l }
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// Listen waits unil the match function returns true for an event, or the context // deadline expires. The match function can be used to filter or otherwise select // interesting events by analysing the event data.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/eventhandler/waiter/eventhandler.go#L59-L70
train
looplab/eventhorizon
eventhandler/waiter/eventhandler.go
Wait
func (l *EventListener) Wait(ctx context.Context) (eh.Event, error) { select { case event := <-l.inbox: return event, nil case <-ctx.Done(): return nil, ctx.Err() } }
go
func (l *EventListener) Wait(ctx context.Context) (eh.Event, error) { select { case event := <-l.inbox: return event, nil case <-ctx.Done(): return nil, ctx.Err() } }
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/eventhandler/waiter/eventhandler.go#L81-L88
train
looplab/eventhorizon
examples/guestlist/domain/setup.go
Setup
func Setup( eventStore eh.EventStore, eventBus eh.EventBus, commandBus *bus.CommandHandler, invitationRepo, guestListRepo eh.ReadWriteRepo, eventID uuid.UUID) { // Add a logger as an observer. eventBus.AddObserver(eh.MatchAny(), &Logger{}) // Create the aggregate repository. aggregateStore, err := events.New...
go
func Setup( eventStore eh.EventStore, eventBus eh.EventBus, commandBus *bus.CommandHandler, invitationRepo, guestListRepo eh.ReadWriteRepo, eventID uuid.UUID) { // Add a logger as an observer. eventBus.AddObserver(eh.MatchAny(), &Logger{}) // Create the aggregate repository. aggregateStore, err := events.New...
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// Setup configures the domain.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/examples/guestlist/domain/setup.go#L30-L83
train
looplab/eventhorizon
commandhandler.go
HandleCommand
func (h CommandHandlerFunc) HandleCommand(ctx context.Context, cmd Command) error { return h(ctx, cmd) }
go
func (h CommandHandlerFunc) HandleCommand(ctx context.Context, cmd Command) error { return h(ctx, cmd) }
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/commandhandler.go#L30-L32
train
looplab/eventhorizon
commandhandler.go
UseCommandHandlerMiddleware
func UseCommandHandlerMiddleware(h CommandHandler, middleware ...CommandHandlerMiddleware) CommandHandler { // Apply in reverse order. for i := len(middleware) - 1; i >= 0; i-- { m := middleware[i] h = m(h) } return h }
go
func UseCommandHandlerMiddleware(h CommandHandler, middleware ...CommandHandlerMiddleware) CommandHandler { // Apply in reverse order. for i := len(middleware) - 1; i >= 0; i-- { m := middleware[i] h = m(h) } return h }
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// UseCommandHandlerMiddleware wraps a CommandHandler in one or more middleware.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/commandhandler.go#L39-L46
train
looplab/eventhorizon
eventhandler/projector/eventhandler.go
Error
func (e Error) Error() string { errStr := e.Err.Error() if e.BaseErr != nil { errStr += ": " + e.BaseErr.Error() } return "projector: " + errStr + " (" + e.Namespace + ")" }
go
func (e Error) Error() string { errStr := e.Err.Error() if e.BaseErr != nil { errStr += ": " + e.BaseErr.Error() } return "projector: " + errStr + " (" + e.Namespace + ")" }
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// Error implements the Error method of the errors.Error interface.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/eventhandler/projector/eventhandler.go#L57-L63
train
looplab/eventhorizon
eventhandler/projector/eventhandler.go
HandleEvent
func (h *EventHandler) HandleEvent(ctx context.Context, event eh.Event) error { // Get or create the model, trying to use a waiting find with a min version // if the underlying repo supports it. findCtx, cancel := eh.NewContextWithMinVersionWait(ctx, event.Version()-1) defer cancel() entity, err := h.repo.Find(fin...
go
func (h *EventHandler) HandleEvent(ctx context.Context, event eh.Event) error { // Get or create the model, trying to use a waiting find with a min version // if the underlying repo supports it. findCtx, cancel := eh.NewContextWithMinVersionWait(ctx, event.Version()-1) defer cancel() entity, err := h.repo.Find(fin...
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/eventhandler/projector/eventhandler.go#L83-L151
train
looplab/eventhorizon
eventbus/gcp/eventbus.go
NewEventBus
func NewEventBus(projectID, appID string, opts ...option.ClientOption) (*EventBus, error) { ctx := context.Background() client, err := pubsub.NewClient(ctx, projectID, opts...) if err != nil { return nil, err } // Get or create the topic. name := appID + "_events" topic := client.Topic(name) if ok, err := to...
go
func NewEventBus(projectID, appID string, opts ...option.ClientOption) (*EventBus, error) { ctx := context.Background() client, err := pubsub.NewClient(ctx, projectID, opts...) if err != nil { return nil, err } // Get or create the topic. name := appID + "_events" topic := client.Topic(name) if ok, err := to...
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// NewEventBus creates an EventBus, with optional GCP connection settings.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/eventbus/gcp/eventbus.go#L47-L72
train
looplab/eventhorizon
eventbus/gcp/eventbus.go
subscription
func (b *EventBus) subscription(m eh.EventMatcher, h eh.EventHandler, observer bool) *pubsub.Subscription { b.registeredMu.Lock() defer b.registeredMu.Unlock() if m == nil { panic("matcher can't be nil") } if h == nil { panic("handler can't be nil") } if _, ok := b.registered[h.HandlerType()]; ok { panic(...
go
func (b *EventBus) subscription(m eh.EventMatcher, h eh.EventHandler, observer bool) *pubsub.Subscription { b.registeredMu.Lock() defer b.registeredMu.Unlock() if m == nil { panic("matcher can't be nil") } if h == nil { panic("handler can't be nil") } if _, ok := b.registered[h.HandlerType()]; ok { panic(...
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// Checks the matcher and handler and gets the event subscription.
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6fd1f17be266c5a217ff8c05dd1403d722cae7f2
https://github.com/looplab/eventhorizon/blob/6fd1f17be266c5a217ff8c05dd1403d722cae7f2/eventbus/gcp/eventbus.go#L131-L170
train