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package sdk
import (
"crypto/tls"
"fmt"
"net"
"net/http"
"os"
)
const activatePath = "/Plugin.Activate"
// Handler is the base to create plugin handlers.
// It initializes connections and sockets to listen to.
type Handler struct {
mux *http.ServeMux
}
// NewHandler creates a new Handler with an http mux.
func NewHandler(manifest string) Handler {
mux := http.NewServeMux()
mux.HandleFunc(activatePath, func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", DefaultContentTypeV1_1)
fmt.Fprintln(w, manifest)
})
return Handler{mux: mux}
}
// Serve sets up the handler to serve requests on the passed in listener
func (h Handler) Serve(l net.Listener) error {
server := http.Server{
Addr: l.Addr().String(),
Handler: h.mux,
}
return server.Serve(l)
}
// ServeTCP makes the handler to listen for request in a given TCP address.
// It also writes the spec file in the right directory for docker to read.
// Due to constrains for running Docker in Docker on Windows, data-root directory
// of docker daemon must be provided. To get default directory, use
// WindowsDefaultDaemonRootDir() function. On Unix, this parameter is ignored.
func (h Handler) ServeTCP(pluginName, addr, daemonDir string, tlsConfig *tls.Config) error {
l, spec, err := newTCPListener(addr, pluginName, daemonDir, tlsConfig)
if err != nil {
return err
}
if spec != "" {
defer os.Remove(spec)
}
return h.Serve(l)
}
// ServeUnix makes the handler to listen for requests in a unix socket.
// It also creates the socket file in the right directory for docker to read.
func (h Handler) ServeUnix(addr string, gid int) error {
l, spec, err := newUnixListener(addr, gid)
if err != nil {
return err
}
if spec != "" {
defer os.Remove(spec)
}
return h.Serve(l)
}
// ServeWindows makes the handler to listen for request in a Windows named pipe.
// It also creates the spec file in the right directory for docker to read.
// Due to constrains for running Docker in Docker on Windows, data-root directory
// of docker daemon must be provided. To get default directory, use
// WindowsDefaultDaemonRootDir() function. On Unix, this parameter is ignored.
func (h Handler) ServeWindows(addr, pluginName, daemonDir string, pipeConfig *WindowsPipeConfig) error {
l, spec, err := newWindowsListener(addr, pluginName, daemonDir, pipeConfig)
if err != nil {
return err
}
if spec != "" {
defer os.Remove(spec)
}
return h.Serve(l)
}
// HandleFunc registers a function to handle a request path with.
func (h Handler) HandleFunc(path string, fn func(w http.ResponseWriter, r *http.Request)) {
h.mux.HandleFunc(path, fn)
}
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