* Inital routes to git refs api * Git refs API implementation * Update swagger * Fix copyright * Make swagger happy add basic test * Fix test * Fix test again :)
109 lines
2.6 KiB
Go
109 lines
2.6 KiB
Go
// Package git implements the git transport protocol.
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package git
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import (
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"fmt"
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"io"
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"net"
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"gopkg.in/src-d/go-git.v4/plumbing/format/pktline"
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"gopkg.in/src-d/go-git.v4/plumbing/transport"
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"gopkg.in/src-d/go-git.v4/plumbing/transport/internal/common"
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"gopkg.in/src-d/go-git.v4/utils/ioutil"
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)
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// DefaultClient is the default git client.
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var DefaultClient = common.NewClient(&runner{})
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const DefaultPort = 9418
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type runner struct{}
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// Command returns a new Command for the given cmd in the given Endpoint
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func (r *runner) Command(cmd string, ep *transport.Endpoint, auth transport.AuthMethod) (common.Command, error) {
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// auth not allowed since git protocol doesn't support authentication
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if auth != nil {
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return nil, transport.ErrInvalidAuthMethod
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}
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c := &command{command: cmd, endpoint: ep}
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if err := c.connect(); err != nil {
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return nil, err
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}
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return c, nil
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}
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type command struct {
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conn net.Conn
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connected bool
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command string
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endpoint *transport.Endpoint
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}
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// Start executes the command sending the required message to the TCP connection
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func (c *command) Start() error {
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cmd := endpointToCommand(c.command, c.endpoint)
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e := pktline.NewEncoder(c.conn)
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return e.Encode([]byte(cmd))
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}
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func (c *command) connect() error {
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if c.connected {
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return transport.ErrAlreadyConnected
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}
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var err error
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c.conn, err = net.Dial("tcp", c.getHostWithPort())
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if err != nil {
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return err
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}
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c.connected = true
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return nil
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}
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func (c *command) getHostWithPort() string {
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host := c.endpoint.Host
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port := c.endpoint.Port
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if port <= 0 {
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port = DefaultPort
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}
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return fmt.Sprintf("%s:%d", host, port)
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}
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// StderrPipe git protocol doesn't have any dedicated error channel
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func (c *command) StderrPipe() (io.Reader, error) {
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return nil, nil
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}
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// StdinPipe return the underlying connection as WriteCloser, wrapped to prevent
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// call to the Close function from the connection, a command execution in git
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// protocol can't be closed or killed
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func (c *command) StdinPipe() (io.WriteCloser, error) {
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return ioutil.WriteNopCloser(c.conn), nil
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}
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// StdoutPipe return the underlying connection as Reader
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func (c *command) StdoutPipe() (io.Reader, error) {
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return c.conn, nil
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}
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func endpointToCommand(cmd string, ep *transport.Endpoint) string {
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host := ep.Host
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if ep.Port != DefaultPort {
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host = fmt.Sprintf("%s:%d", ep.Host, ep.Port)
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}
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return fmt.Sprintf("%s %s%chost=%s%c", cmd, ep.Path, 0, host, 0)
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}
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// Close closes the TCP connection and connection.
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func (c *command) Close() error {
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if !c.connected {
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return nil
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}
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c.connected = false
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return c.conn.Close()
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}
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