frontend

package

v0.0.0-...-97d4abd Latest Latest Go to latest Published: Apr 2, 2022 License: MIT Imports: 16 Imported by: 0

Details

Package frontend is responsible for handling connections to a postgres database.

This section is empty.

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var GlobalPreamble = []pgproto3.BackendMessage{}

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var GlobalPreambleLock = &sync.RWMutex{}

func LaunchAll()

type AttachChannels struct {
	Out     <-chan pgproto3.BackendMessage
	OutSync *misc.Cond
}

type FConn struct {
	In chan<- pgproto3.FrontendMessage
	// contains filtered or unexported fields
}

func (c *FConn) AttachBackend(terminator func()) AttachChannels

func (c *FConn) BackendTerminated()

func (c *FConn) ClearApplicationName()

func (c *FConn) Closed() bool

func (c *FConn) DetachBackend()

func (c *FConn) ReqPreamble()

func (c *FConn) SetApplicationName(applicationName string)

type Pool struct {
	Name string
	// contains filtered or unexported fields
}

var ReadPool *Pool

var WritePool *Pool

func NewPool(name string, size int, connMaxLifetime *time.Duration) *Pool

func (p *Pool) Active() int

func (p *Pool) Expired()

Expired is called when a member of the pool will not be returning

func (p *Pool) Len() int

func (p *Pool) Pop() *FConn

func (p *Pool) Push(v *FConn)

func (p *Pool) PushNew(v *FConn)

PushNew will push a connection onto the pool and increment active count

Path	Synopsis
preambler Package preambler contains an actor whose job is to send the Postgres preamble to each client on demand as clients connect to this particular Postgres frontend	Package preambler contains an actor whose job is to send the Postgres preamble to each client on demand as clients connect to this particular Postgres frontend
receiver Package receiver contains an actor that receives messages from Postgres and (usually) forwards those messages to the backend manager.	Package receiver contains an actor that receives messages from Postgres and (usually) forwards those messages to the backend manager.
sender Package sender receives messages from the backend manager and forwards them directly to Postgres	Package sender receives messages from the backend manager and forwards them directly to Postgres