http.go

//
// KULADO INC. CONFIDENTIAL
// __________________
//
// [2014] - [2018] KULADO INC.
// All Rights Reserved.
//
// NOTICE:  All information contained herein is, and remains
// the property of KULADO INC. and its suppliers,
// if any.  The intellectual and technical concepts contained
// herein are proprietary to KULADO INC.
// and its suppliers and may be covered by Russian Federation and Foreign Patents,
// patents in process, and are protected by trade secret or copyright law.
// Dissemination of this information or reproduction of this material
// is strictly forbidden unless prior written permission is obtained
// from KULADO INC..
//

package docker

import (
	"encoding/json"
	"errors"
	"net/http"

	"github.com/docker/docker/daemon/logger"
	"github.com/docker/go-plugins-helpers/sdk"
)

type StartLoggingRequest struct {
	File string
	Info logger.Info
}

type StopLoggingRequest struct {
	File string
}

type CapabilitiesResponse struct {
	Err string
	Cap logger.Capability
}

type ReadLogsRequest struct {
	Info   logger.Info
	Config logger.ReadConfig
}

func Handlers(h *sdk.Handler, d *driver) {

	h.HandleFunc("/LogDriver.StartLogging", func(w http.ResponseWriter, r *http.Request) {
		var req StartLoggingRequest
		if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
			http.Error(w, err.Error(), http.StatusBadRequest)
			return
		}
		if req.Info.ContainerID == "" {
			respond(errors.New("must provide container id in log context"), w)
			return
		}

		err := d.StartLogging(req.File, req.Info)
		respond(err, w)
	})

	h.HandleFunc("/LogDriver.StopLogging", func(w http.ResponseWriter, r *http.Request) {
		var req StopLoggingRequest
		if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
			http.Error(w, err.Error(), http.StatusBadRequest)
			return
		}
		err := d.StopLogging(req.File)
		respond(err, w)
	})

	h.HandleFunc("/LogDriver.Capabilities", func(w http.ResponseWriter, r *http.Request) {
		_ = json.NewEncoder(w).Encode(&CapabilitiesResponse{
			Cap: logger.Capability{ReadLogs: false},
		})
	})
}

type response struct {
	Err string
}

func respond(err error, w http.ResponseWriter) {
	var res response
	if err != nil {
		res.Err = err.Error()
	}
	if err := json.NewEncoder(w).Encode(&res); err != nil {
		return
	}
}