135 lines
3.6 KiB
Go
135 lines
3.6 KiB
Go
package pgxpool
|
|
|
|
import (
|
|
"context"
|
|
"sync/atomic"
|
|
|
|
"github.com/jackc/pgx/v5"
|
|
"github.com/jackc/pgx/v5/pgconn"
|
|
"github.com/jackc/puddle/v2"
|
|
)
|
|
|
|
// Conn is an acquired *pgx.Conn from a Pool.
|
|
type Conn struct {
|
|
res *puddle.Resource[*connResource]
|
|
p *Pool
|
|
}
|
|
|
|
// Release returns c to the pool it was acquired from. Once Release has been called, other methods must not be called.
|
|
// However, it is safe to call Release multiple times. Subsequent calls after the first will be ignored.
|
|
func (c *Conn) Release() {
|
|
if c.res == nil {
|
|
return
|
|
}
|
|
|
|
conn := c.Conn()
|
|
res := c.res
|
|
c.res = nil
|
|
|
|
if c.p.releaseTracer != nil {
|
|
c.p.releaseTracer.TraceRelease(c.p, TraceReleaseData{Conn: conn})
|
|
}
|
|
|
|
if conn.IsClosed() || conn.PgConn().IsBusy() || conn.PgConn().TxStatus() != 'I' {
|
|
res.Destroy()
|
|
// Signal to the health check to run since we just destroyed a connections
|
|
// and we might be below minConns now
|
|
c.p.triggerHealthCheck()
|
|
return
|
|
}
|
|
|
|
// If the pool is consistently being used, we might never get to check the
|
|
// lifetime of a connection since we only check idle connections in checkConnsHealth
|
|
// so we also check the lifetime here and force a health check
|
|
if c.p.isExpired(res) {
|
|
atomic.AddInt64(&c.p.lifetimeDestroyCount, 1)
|
|
res.Destroy()
|
|
// Signal to the health check to run since we just destroyed a connections
|
|
// and we might be below minConns now
|
|
c.p.triggerHealthCheck()
|
|
return
|
|
}
|
|
|
|
if c.p.afterRelease == nil {
|
|
res.Release()
|
|
return
|
|
}
|
|
|
|
go func() {
|
|
if c.p.afterRelease(conn) {
|
|
res.Release()
|
|
} else {
|
|
res.Destroy()
|
|
// Signal to the health check to run since we just destroyed a connections
|
|
// and we might be below minConns now
|
|
c.p.triggerHealthCheck()
|
|
}
|
|
}()
|
|
}
|
|
|
|
// Hijack assumes ownership of the connection from the pool. Caller is responsible for closing the connection. Hijack
|
|
// will panic if called on an already released or hijacked connection.
|
|
func (c *Conn) Hijack() *pgx.Conn {
|
|
if c.res == nil {
|
|
panic("cannot hijack already released or hijacked connection")
|
|
}
|
|
|
|
conn := c.Conn()
|
|
res := c.res
|
|
c.res = nil
|
|
|
|
res.Hijack()
|
|
|
|
return conn
|
|
}
|
|
|
|
func (c *Conn) Exec(ctx context.Context, sql string, arguments ...any) (pgconn.CommandTag, error) {
|
|
return c.Conn().Exec(ctx, sql, arguments...)
|
|
}
|
|
|
|
func (c *Conn) Query(ctx context.Context, sql string, args ...any) (pgx.Rows, error) {
|
|
return c.Conn().Query(ctx, sql, args...)
|
|
}
|
|
|
|
func (c *Conn) QueryRow(ctx context.Context, sql string, args ...any) pgx.Row {
|
|
return c.Conn().QueryRow(ctx, sql, args...)
|
|
}
|
|
|
|
func (c *Conn) SendBatch(ctx context.Context, b *pgx.Batch) pgx.BatchResults {
|
|
return c.Conn().SendBatch(ctx, b)
|
|
}
|
|
|
|
func (c *Conn) CopyFrom(ctx context.Context, tableName pgx.Identifier, columnNames []string, rowSrc pgx.CopyFromSource) (int64, error) {
|
|
return c.Conn().CopyFrom(ctx, tableName, columnNames, rowSrc)
|
|
}
|
|
|
|
// Begin starts a transaction block from the *Conn without explicitly setting a transaction mode (see BeginTx with TxOptions if transaction mode is required).
|
|
func (c *Conn) Begin(ctx context.Context) (pgx.Tx, error) {
|
|
return c.Conn().Begin(ctx)
|
|
}
|
|
|
|
// BeginTx starts a transaction block from the *Conn with txOptions determining the transaction mode.
|
|
func (c *Conn) BeginTx(ctx context.Context, txOptions pgx.TxOptions) (pgx.Tx, error) {
|
|
return c.Conn().BeginTx(ctx, txOptions)
|
|
}
|
|
|
|
func (c *Conn) Ping(ctx context.Context) error {
|
|
return c.Conn().Ping(ctx)
|
|
}
|
|
|
|
func (c *Conn) Conn() *pgx.Conn {
|
|
return c.connResource().conn
|
|
}
|
|
|
|
func (c *Conn) connResource() *connResource {
|
|
return c.res.Value()
|
|
}
|
|
|
|
func (c *Conn) getPoolRow(r pgx.Row) *poolRow {
|
|
return c.connResource().getPoolRow(c, r)
|
|
}
|
|
|
|
func (c *Conn) getPoolRows(r pgx.Rows) *poolRows {
|
|
return c.connResource().getPoolRows(c, r)
|
|
}
|