167 lines
4.2 KiB
Go
167 lines
4.2 KiB
Go
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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package thrift
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import (
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"context"
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"net"
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"time"
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)
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type TSocket struct {
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conn net.Conn
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addr net.Addr
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timeout time.Duration
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}
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// NewTSocket creates a net.Conn-backed TTransport, given a host and port
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//
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// Example:
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// trans, err := thrift.NewTSocket("localhost:9090")
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func NewTSocket(hostPort string) (*TSocket, error) {
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return NewTSocketTimeout(hostPort, 0)
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}
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// NewTSocketTimeout creates a net.Conn-backed TTransport, given a host and port
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// it also accepts a timeout as a time.Duration
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func NewTSocketTimeout(hostPort string, timeout time.Duration) (*TSocket, error) {
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//conn, err := net.DialTimeout(network, address, timeout)
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addr, err := net.ResolveTCPAddr("tcp", hostPort)
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if err != nil {
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return nil, err
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}
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return NewTSocketFromAddrTimeout(addr, timeout), nil
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}
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// Creates a TSocket from a net.Addr
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func NewTSocketFromAddrTimeout(addr net.Addr, timeout time.Duration) *TSocket {
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return &TSocket{addr: addr, timeout: timeout}
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}
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// Creates a TSocket from an existing net.Conn
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func NewTSocketFromConnTimeout(conn net.Conn, timeout time.Duration) *TSocket {
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return &TSocket{conn: conn, addr: conn.RemoteAddr(), timeout: timeout}
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}
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// Sets the socket timeout
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func (p *TSocket) SetTimeout(timeout time.Duration) error {
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p.timeout = timeout
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return nil
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}
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func (p *TSocket) pushDeadline(read, write bool) {
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var t time.Time
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if p.timeout > 0 {
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t = time.Now().Add(time.Duration(p.timeout))
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}
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if read && write {
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p.conn.SetDeadline(t)
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} else if read {
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p.conn.SetReadDeadline(t)
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} else if write {
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p.conn.SetWriteDeadline(t)
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}
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}
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// Connects the socket, creating a new socket object if necessary.
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func (p *TSocket) Open() error {
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if p.IsOpen() {
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return NewTTransportException(ALREADY_OPEN, "Socket already connected.")
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}
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if p.addr == nil {
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return NewTTransportException(NOT_OPEN, "Cannot open nil address.")
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}
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if len(p.addr.Network()) == 0 {
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return NewTTransportException(NOT_OPEN, "Cannot open bad network name.")
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}
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if len(p.addr.String()) == 0 {
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return NewTTransportException(NOT_OPEN, "Cannot open bad address.")
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}
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var err error
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if p.conn, err = net.DialTimeout(p.addr.Network(), p.addr.String(), p.timeout); err != nil {
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return NewTTransportException(NOT_OPEN, err.Error())
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}
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return nil
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}
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// Retrieve the underlying net.Conn
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func (p *TSocket) Conn() net.Conn {
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return p.conn
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}
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// Returns true if the connection is open
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func (p *TSocket) IsOpen() bool {
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if p.conn == nil {
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return false
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}
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return true
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}
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// Closes the socket.
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func (p *TSocket) Close() error {
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// Close the socket
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if p.conn != nil {
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err := p.conn.Close()
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if err != nil {
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return err
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}
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p.conn = nil
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}
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return nil
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}
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//Returns the remote address of the socket.
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func (p *TSocket) Addr() net.Addr {
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return p.addr
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}
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func (p *TSocket) Read(buf []byte) (int, error) {
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if !p.IsOpen() {
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return 0, NewTTransportException(NOT_OPEN, "Connection not open")
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}
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p.pushDeadline(true, false)
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n, err := p.conn.Read(buf)
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return n, NewTTransportExceptionFromError(err)
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}
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func (p *TSocket) Write(buf []byte) (int, error) {
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if !p.IsOpen() {
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return 0, NewTTransportException(NOT_OPEN, "Connection not open")
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}
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p.pushDeadline(false, true)
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return p.conn.Write(buf)
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}
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func (p *TSocket) Flush(ctx context.Context) error {
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return nil
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}
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func (p *TSocket) Interrupt() error {
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if !p.IsOpen() {
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return nil
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}
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return p.conn.Close()
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}
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func (p *TSocket) RemainingBytes() (num_bytes uint64) {
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const maxSize = ^uint64(0)
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return maxSize // the thruth is, we just don't know unless framed is used
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}
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