66 lines
1.5 KiB
Go
66 lines
1.5 KiB
Go
package errorsx
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import (
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"context"
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"net"
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)
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// Dialer establishes network connections.
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type Dialer interface {
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// DialContext behaves like net.Dialer.DialContext.
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DialContext(ctx context.Context, network, address string) (net.Conn, error)
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}
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// ErrorWrapperDialer is a dialer that performs err wrapping.
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type ErrorWrapperDialer struct {
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Dialer
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}
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// DialContext implements Dialer.DialContext
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func (d *ErrorWrapperDialer) DialContext(ctx context.Context, network, address string) (net.Conn, error) {
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conn, err := d.Dialer.DialContext(ctx, network, address)
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err = SafeErrWrapperBuilder{
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Error: err,
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Operation: ConnectOperation,
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}.MaybeBuild()
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if err != nil {
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return nil, err
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}
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return &errorWrapperConn{Conn: conn}, nil
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}
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// errorWrapperConn is a net.Conn that performs error wrapping.
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type errorWrapperConn struct {
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net.Conn
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}
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// Read implements net.Conn.Read
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func (c *errorWrapperConn) Read(b []byte) (n int, err error) {
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n, err = c.Conn.Read(b)
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err = SafeErrWrapperBuilder{
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Error: err,
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Operation: ReadOperation,
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}.MaybeBuild()
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return
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}
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// Write implements net.Conn.Write
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func (c *errorWrapperConn) Write(b []byte) (n int, err error) {
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n, err = c.Conn.Write(b)
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err = SafeErrWrapperBuilder{
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Error: err,
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Operation: WriteOperation,
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}.MaybeBuild()
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return
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}
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// Close implements net.Conn.Close
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func (c *errorWrapperConn) Close() (err error) {
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err = c.Conn.Close()
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err = SafeErrWrapperBuilder{
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Error: err,
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Operation: CloseOperation,
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}.MaybeBuild()
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return
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}
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