[#803]: feat(plugins): move plugins to a separate repositoryv2.5.0-alpha.2

[#803]: feat(plugins): move plugins to a separate repository

8 files changed, 0 insertions, 910 deletions

diff --git a/pkg/worker_handler/constants.go b/pkg/worker_handler/constants.go
deleted file mode 100644
index 3355d9c2..00000000
--- a/pkg/worker_handler/constants.go
+++ /dev/null
@@ -1,8 +0,0 @@
-package handler
-
-import "net/http"
-
-var http2pushHeaderKey = http.CanonicalHeaderKey("http2-push")
-
-// TrailerHeaderKey http header key
-var TrailerHeaderKey = http.CanonicalHeaderKey("trailer")
diff --git a/pkg/worker_handler/errors.go b/pkg/worker_handler/errors.go
deleted file mode 100644
index c3352a52..00000000
--- a/pkg/worker_handler/errors.go
+++ /dev/null
@@ -1,26 +0,0 @@
-//go:build !windows
-// +build !windows
-
-package handler
-
-import (
-	"errors"
-	"net"
-	"os"
-	"syscall"
-)
-
-// Broken pipe
-var errEPIPE = errors.New("EPIPE(32) -> connection reset by peer")
-
-// handleWriteError just check if error was caused by aborted connection on linux
-func handleWriteError(err error) error {
-	if netErr, ok2 := err.(*net.OpError); ok2 {
-		if syscallErr, ok3 := netErr.Err.(*os.SyscallError); ok3 {
-			if errors.Is(syscallErr.Err, syscall.EPIPE) {
-				return errEPIPE
-			}
-		}
-	}
-	return err
-}
diff --git a/pkg/worker_handler/errors_windows.go b/pkg/worker_handler/errors_windows.go
deleted file mode 100644
index 3c6c2186..00000000
--- a/pkg/worker_handler/errors_windows.go
+++ /dev/null
@@ -1,28 +0,0 @@
-//go:build windows
-// +build windows
-
-package handler
-
-import (
-	"errors"
-	"net"
-	"os"
-	"syscall"
-)
-
-//Software caused connection abort.
-//An established connection was aborted by the software in your host computer,
-//possibly due to a data transmission time-out or protocol error.
-var errEPIPE = errors.New("WSAECONNABORTED (10053) ->  an established connection was aborted by peer")
-
-// handleWriteError just check if error was caused by aborted connection on windows
-func handleWriteError(err error) error {
-	if netErr, ok2 := err.(*net.OpError); ok2 {
-		if syscallErr, ok3 := netErr.Err.(*os.SyscallError); ok3 {
-			if syscallErr.Err == syscall.WSAECONNABORTED {
-				return errEPIPE
-			}
-		}
-	}
-	return err
-}
diff --git a/pkg/worker_handler/handler.go b/pkg/worker_handler/handler.go
deleted file mode 100644
index fc03563b..00000000
--- a/pkg/worker_handler/handler.go
+++ /dev/null
@@ -1,246 +0,0 @@
-package handler
-
-import (
-	"net"
-	"net/http"
-	"strconv"
-	"strings"
-	"sync"
-	"time"
-
-	"github.com/spiral/errors"
-	"github.com/spiral/roadrunner/v2/pkg/events"
-	"github.com/spiral/roadrunner/v2/pkg/pool"
-	"github.com/spiral/roadrunner/v2/plugins/http/config"
-	"github.com/spiral/roadrunner/v2/plugins/logger"
-)
-
-// MB is 1024 bytes
-const MB uint64 = 1024 * 1024
-
-// ErrorEvent represents singular http error event.
-type ErrorEvent struct {
-	// Request contains client request, must not be stored.
-	Request *http.Request
-
-	// Error - associated error, if any.
-	Error error
-
-	// event timings
-	start   time.Time
-	elapsed time.Duration
-}
-
-// Elapsed returns duration of the invocation.
-func (e *ErrorEvent) Elapsed() time.Duration {
-	return e.elapsed
-}
-
-// ResponseEvent represents singular http response event.
-type ResponseEvent struct {
-	// Request contains client request, must not be stored.
-	Request *Request
-
-	// Response contains service response.
-	Response *Response
-
-	// event timings
-	start   time.Time
-	elapsed time.Duration
-}
-
-// Elapsed returns duration of the invocation.
-func (e *ResponseEvent) Elapsed() time.Duration {
-	return e.elapsed
-}
-
-// Handler serves http connections to underlying PHP application using PSR-7 protocol. Context will include request headers,
-// parsed files and query, payload will include parsed form dataTree (if any).
-type Handler struct {
-	maxRequestSize   uint64
-	uploads          config.Uploads
-	trusted          config.Cidrs
-	log              logger.Logger
-	pool             pool.Pool
-	mul              sync.Mutex
-	lsn              []events.Listener
-	internalHTTPCode uint64
-}
-
-// NewHandler return handle interface implementation
-func NewHandler(maxReqSize uint64, internalHTTPCode uint64, uploads config.Uploads, trusted config.Cidrs, pool pool.Pool) (*Handler, error) {
-	if pool == nil {
-		return nil, errors.E(errors.Str("pool should be initialized"))
-	}
-	return &Handler{
-		maxRequestSize:   maxReqSize * MB,
-		uploads:          uploads,
-		pool:             pool,
-		trusted:          trusted,
-		internalHTTPCode: internalHTTPCode,
-	}, nil
-}
-
-// AddListener attaches handler event controller.
-func (h *Handler) AddListener(l ...events.Listener) {
-	h.mul.Lock()
-	defer h.mul.Unlock()
-
-	h.lsn = l
-}
-
-// mdwr serve using PSR-7 requests passed to underlying application. Attempts to serve static files first if enabled.
-func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	const op = errors.Op("serve_http")
-	start := time.Now()
-
-	// validating request size
-	if h.maxRequestSize != 0 {
-		const op = errors.Op("http_handler_max_size")
-		if length := r.Header.Get("content-length"); length != "" {
-			// try to parse the value from the `content-length` header
-			size, err := strconv.ParseInt(length, 10, 64)
-			if err != nil {
-				// if got an error while parsing -> assign 500 code to the writer and return
-				http.Error(w, "", 500)
-				h.sendEvent(ErrorEvent{Request: r, Error: errors.E(op, errors.Str("error while parsing value from the `content-length` header")), start: start, elapsed: time.Since(start)})
-				return
-			}
-
-			if size > int64(h.maxRequestSize) {
-				h.sendEvent(ErrorEvent{Request: r, Error: errors.E(op, errors.Str("request body max size is exceeded")), start: start, elapsed: time.Since(start)})
-				http.Error(w, errors.E(op, errors.Str("request body max size is exceeded")).Error(), http.StatusBadRequest)
-				return
-			}
-		}
-	}
-
-	req, err := NewRequest(r, h.uploads)
-	if err != nil {
-		// if pipe is broken, there is no sense to write the header
-		// in this case we just report about error
-		if err == errEPIPE {
-			h.sendEvent(ErrorEvent{Request: r, Error: err, start: start, elapsed: time.Since(start)})
-			return
-		}
-
-		http.Error(w, errors.E(op, err).Error(), 500)
-		h.sendEvent(ErrorEvent{Request: r, Error: errors.E(op, err), start: start, elapsed: time.Since(start)})
-		return
-	}
-
-	// proxy IP resolution
-	h.resolveIP(req)
-
-	req.Open(h.log)
-	defer req.Close(h.log)
-
-	p, err := req.Payload()
-	if err != nil {
-		h.handleError(w, r, start, err)
-		h.sendEvent(ErrorEvent{Request: r, Error: errors.E(op, err), start: start, elapsed: time.Since(start)})
-		return
-	}
-
-	rsp, err := h.pool.Exec(p)
-	if err != nil {
-		h.handleError(w, r, start, err)
-		h.sendEvent(ErrorEvent{Request: r, Error: errors.E(op, err), start: start, elapsed: time.Since(start)})
-		return
-	}
-
-	resp, err := NewResponse(rsp)
-	if err != nil {
-		h.handleError(w, r, start, err)
-		h.sendEvent(ErrorEvent{Request: r, Error: errors.E(op, err), start: start, elapsed: time.Since(start)})
-		return
-	}
-
-	h.handleResponse(req, resp, start)
-	err = resp.Write(w)
-	if err != nil {
-		http.Error(w, errors.E(op, err).Error(), 500)
-		h.sendEvent(ErrorEvent{Request: r, Error: errors.E(op, err), start: start, elapsed: time.Since(start)})
-	}
-}
-
-// handleError will handle internal RR errors and return 500
-func (h *Handler) handleError(w http.ResponseWriter, r *http.Request, start time.Time, err error) {
-	const op = errors.Op("handle_error")
-	// internal error types, user should not see them
-	if errors.Is(errors.SoftJob, err) ||
-		errors.Is(errors.WatcherStopped, err) ||
-		errors.Is(errors.WorkerAllocate, err) ||
-		errors.Is(errors.NoFreeWorkers, err) ||
-		errors.Is(errors.ExecTTL, err) ||
-		errors.Is(errors.IdleTTL, err) ||
-		errors.Is(errors.TTL, err) ||
-		errors.Is(errors.Encode, err) ||
-		errors.Is(errors.Decode, err) ||
-		errors.Is(errors.Network, err) {
-		// write an internal server error
-		w.WriteHeader(int(h.internalHTTPCode))
-		h.sendEvent(ErrorEvent{Request: r, Error: errors.E(op, err), start: start, elapsed: time.Since(start)})
-	}
-}
-
-// handleResponse triggers response event.
-func (h *Handler) handleResponse(req *Request, resp *Response, start time.Time) {
-	h.sendEvent(ResponseEvent{Request: req, Response: resp, start: start, elapsed: time.Since(start)})
-}
-
-// sendEvent invokes event handler if any.
-func (h *Handler) sendEvent(event interface{}) {
-	if h.lsn != nil {
-		for i := range h.lsn {
-			// do not block the pipeline
-			// TODO not a good approach, redesign event bus
-			i := i
-			go func() {
-				h.lsn[i](event)
-			}()
-		}
-	}
-}
-
-// get real ip passing multiple proxy
-func (h *Handler) resolveIP(r *Request) {
-	if h.trusted.IsTrusted(r.RemoteAddr) == false { //nolint:gosimple
-		return
-	}
-
-	if r.Header.Get("X-Forwarded-For") != "" {
-		ips := strings.Split(r.Header.Get("X-Forwarded-For"), ",")
-		ipCount := len(ips)
-
-		for i := ipCount - 1; i >= 0; i-- {
-			addr := strings.TrimSpace(ips[i])
-			if net.ParseIP(addr) != nil {
-				r.RemoteAddr = addr
-				return
-			}
-		}
-
-		return
-	}
-
-	// The logic here is the following:
-	// In general case, we only expect X-Real-Ip header. If it exist, we get the IP address from header and set request Remote address
-	// But, if there is no X-Real-Ip header, we also trying to check CloudFlare headers
-	// True-Client-IP is a general CF header in which copied information from X-Real-Ip in CF.
-	// CF-Connecting-IP is an Enterprise feature and we check it last in order.
-	// This operations are near O(1) because Headers struct are the map type -> type MIMEHeader map[string][]string
-	if r.Header.Get("X-Real-Ip") != "" {
-		r.RemoteAddr = FetchIP(r.Header.Get("X-Real-Ip"))
-		return
-	}
-
-	if r.Header.Get("True-Client-IP") != "" {
-		r.RemoteAddr = FetchIP(r.Header.Get("True-Client-IP"))
-		return
-	}
-
-	if r.Header.Get("CF-Connecting-IP") != "" {
-		r.RemoteAddr = FetchIP(r.Header.Get("CF-Connecting-IP"))
-	}
-}
diff --git a/pkg/worker_handler/parse.go b/pkg/worker_handler/parse.go
deleted file mode 100644
index 2790da2a..00000000
--- a/pkg/worker_handler/parse.go
+++ /dev/null
@@ -1,149 +0,0 @@
-package handler
-
-import (
-	"net/http"
-
-	"github.com/spiral/roadrunner/v2/plugins/http/config"
-)
-
-// MaxLevel defines maximum tree depth for incoming request data and files.
-const MaxLevel = 127
-
-type dataTree map[string]interface{}
-type fileTree map[string]interface{}
-
-// parseData parses incoming request body into data tree.
-func parseData(r *http.Request) dataTree {
-	data := make(dataTree)
-	if r.PostForm != nil {
-		for k, v := range r.PostForm {
-			data.push(k, v)
-		}
-	}
-
-	if r.MultipartForm != nil {
-		for k, v := range r.MultipartForm.Value {
-			data.push(k, v)
-		}
-	}
-
-	return data
-}
-
-// pushes value into data tree.
-func (d dataTree) push(k string, v []string) {
-	keys := FetchIndexes(k)
-	if len(keys) <= MaxLevel {
-		d.mount(keys, v)
-	}
-}
-
-// mount mounts data tree recursively.
-func (d dataTree) mount(i []string, v []string) {
-	if len(i) == 1 {
-		// single value context (last element)
-		d[i[0]] = v[len(v)-1]
-		return
-	}
-
-	if len(i) == 2 && i[1] == "" {
-		// non associated array of elements
-		d[i[0]] = v
-		return
-	}
-
-	if p, ok := d[i[0]]; ok {
-		p.(dataTree).mount(i[1:], v)
-		return
-	}
-
-	d[i[0]] = make(dataTree)
-	d[i[0]].(dataTree).mount(i[1:], v)
-}
-
-// parse incoming dataTree request into JSON (including contentMultipart form dataTree)
-func parseUploads(r *http.Request, cfg config.Uploads) *Uploads {
-	u := &Uploads{
-		cfg:  cfg,
-		tree: make(fileTree),
-		list: make([]*FileUpload, 0),
-	}
-
-	for k, v := range r.MultipartForm.File {
-		files := make([]*FileUpload, 0, len(v))
-		for _, f := range v {
-			files = append(files, NewUpload(f))
-		}
-
-		u.list = append(u.list, files...)
-		u.tree.push(k, files)
-	}
-
-	return u
-}
-
-// pushes new file upload into it's proper place.
-func (d fileTree) push(k string, v []*FileUpload) {
-	keys := FetchIndexes(k)
-	if len(keys) <= MaxLevel {
-		d.mount(keys, v)
-	}
-}
-
-// mount mounts data tree recursively.
-func (d fileTree) mount(i []string, v []*FileUpload) {
-	if len(i) == 1 {
-		// single value context
-		d[i[0]] = v[0]
-		return
-	}
-
-	if len(i) == 2 && i[1] == "" {
-		// non associated array of elements
-		d[i[0]] = v
-		return
-	}
-
-	if p, ok := d[i[0]]; ok {
-		p.(fileTree).mount(i[1:], v)
-		return
-	}
-
-	d[i[0]] = make(fileTree)
-	d[i[0]].(fileTree).mount(i[1:], v)
-}
-
-// FetchIndexes parses input name and splits it into separate indexes list.
-func FetchIndexes(s string) []string {
-	var (
-		pos  int
-		ch   string
-		keys = make([]string, 1)
-	)
-
-	for _, c := range s {
-		ch = string(c)
-		switch ch {
-		case " ":
-			// ignore all spaces
-			continue
-		case "[":
-			pos = 1
-			continue
-		case "]":
-			if pos == 1 {
-				keys = append(keys, "")
-			}
-			pos = 2
-		default:
-			if pos == 1 || pos == 2 {
-				keys = append(keys, "")
-			}
-
-			keys[len(keys)-1] += ch
-			pos = 0
-		}
-	}
-
-	return keys
-}
diff --git a/pkg/worker_handler/request.go b/pkg/worker_handler/request.go
deleted file mode 100644
index 3d60897b..00000000
--- a/pkg/worker_handler/request.go
+++ /dev/null
@@ -1,189 +0,0 @@
-package handler
-
-import (
-	"fmt"
-	"io/ioutil"
-	"net"
-	"net/http"
-	"net/url"
-	"strings"
-
-	j "github.com/json-iterator/go"
-	"github.com/spiral/errors"
-	"github.com/spiral/roadrunner/v2/pkg/payload"
-	"github.com/spiral/roadrunner/v2/plugins/http/attributes"
-	"github.com/spiral/roadrunner/v2/plugins/http/config"
-	"github.com/spiral/roadrunner/v2/plugins/logger"
-)
-
-var json = j.ConfigCompatibleWithStandardLibrary
-
-const (
-	defaultMaxMemory = 32 << 20 // 32 MB
-	contentNone      = iota + 900
-	contentStream
-	contentMultipart
-	contentFormData
-)
-
-// Request maps net/http requests to PSR7 compatible structure and managed state of temporary uploaded files.
-type Request struct {
-	// RemoteAddr contains ip address of client, make sure to check X-Real-Ip and X-Forwarded-For for real client address.
-	RemoteAddr string `json:"remoteAddr"`
-
-	// Protocol includes HTTP protocol version.
-	Protocol string `json:"protocol"`
-
-	// Method contains name of HTTP method used for the request.
-	Method string `json:"method"`
-
-	// URI contains full request URI with scheme and query.
-	URI string `json:"uri"`
-
-	// Header contains list of request headers.
-	Header http.Header `json:"headers"`
-
-	// Cookies contains list of request cookies.
-	Cookies map[string]string `json:"cookies"`
-
-	// RawQuery contains non parsed query string (to be parsed on php end).
-	RawQuery string `json:"rawQuery"`
-
-	// Parsed indicates that request body has been parsed on RR end.
-	Parsed bool `json:"parsed"`
-
-	// Uploads contains list of uploaded files, their names, sized and associations with temporary files.
-	Uploads *Uploads `json:"uploads"`
-
-	// Attributes can be set by chained mdwr to safely pass value from Golang to PHP. See: GetAttribute, SetAttribute functions.
-	Attributes map[string]interface{} `json:"attributes"`
-
-	// request body can be parsedData or []byte
-	body interface{}
-}
-
-func FetchIP(pair string) string {
-	if !strings.ContainsRune(pair, ':') {
-		return pair
-	}
-
-	addr, _, _ := net.SplitHostPort(pair)
-	return addr
-}
-
-// NewRequest creates new PSR7 compatible request using net/http request.
-func NewRequest(r *http.Request, cfg config.Uploads) (*Request, error) {
-	req := &Request{
-		RemoteAddr: FetchIP(r.RemoteAddr),
-		Protocol:   r.Proto,
-		Method:     r.Method,
-		URI:        URI(r),
-		Header:     r.Header,
-		Cookies:    make(map[string]string),
-		RawQuery:   r.URL.RawQuery,
-		Attributes: attributes.All(r),
-	}
-
-	for _, c := range r.Cookies() {
-		if v, err := url.QueryUnescape(c.Value); err == nil {
-			req.Cookies[c.Name] = v
-		}
-	}
-
-	switch req.contentType() {
-	case contentNone:
-		return req, nil
-
-	case contentStream:
-		var err error
-		req.body, err = ioutil.ReadAll(r.Body)
-		return req, err
-
-	case contentMultipart:
-		if err := r.ParseMultipartForm(defaultMaxMemory); err != nil {
-			return nil, err
-		}
-
-		req.Uploads = parseUploads(r, cfg)
-		fallthrough
-	case contentFormData:
-		if err := r.ParseForm(); err != nil {
-			return nil, err
-		}
-
-		req.body = parseData(r)
-	}
-
-	req.Parsed = true
-	return req, nil
-}
-
-// Open moves all uploaded files to temporary directory so it can be given to php later.
-func (r *Request) Open(log logger.Logger) {
-	if r.Uploads == nil {
-		return
-	}
-
-	r.Uploads.Open(log)
-}
-
-// Close clears all temp file uploads
-func (r *Request) Close(log logger.Logger) {
-	if r.Uploads == nil {
-		return
-	}
-
-	r.Uploads.Clear(log)
-}
-
-// Payload request marshaled RoadRunner payload based on PSR7 data. values encode method is JSON. Make sure to open
-// files prior to calling this method.
-func (r *Request) Payload() (*payload.Payload, error) {
-	const op = errors.Op("marshal_payload")
-	p := &payload.Payload{}
-
-	var err error
-	if p.Context, err = json.Marshal(r); err != nil {
-		return nil, errors.E(op, errors.Encode, err)
-	}
-
-	if r.Parsed {
-		if p.Body, err = json.Marshal(r.body); err != nil {
-			return nil, errors.E(op, errors.Encode, err)
-		}
-	} else if r.body != nil {
-		p.Body = r.body.([]byte)
-	}
-
-	return p, nil
-}
-
-// contentType returns the payload content type.
-func (r *Request) contentType() int {
-	if r.Method == "HEAD" || r.Method == "OPTIONS" {
-		return contentNone
-	}
-
-	ct := r.Header.Get("content-type")
-	if strings.Contains(ct, "application/x-www-form-urlencoded") {
-		return contentFormData
-	}
-
-	if strings.Contains(ct, "multipart/form-data") {
-		return contentMultipart
-	}
-
-	return contentStream
-}
-
-// URI fetches full uri from request in a form of string (including https scheme if TLS connection is enabled).
-func URI(r *http.Request) string {
-	if r.URL.Host != "" {
-		return r.URL.String()
-	}
-	if r.TLS != nil {
-		return fmt.Sprintf("https://%s%s", r.Host, r.URL.String())
-	}
-
-	return fmt.Sprintf("http://%s%s", r.Host, r.URL.String())
-}
diff --git a/pkg/worker_handler/response.go b/pkg/worker_handler/response.go
deleted file mode 100644
index d22f09d4..00000000
--- a/pkg/worker_handler/response.go
+++ /dev/null
@@ -1,105 +0,0 @@
-package handler
-
-import (
-	"io"
-	"net/http"
-	"strings"
-
-	"github.com/spiral/errors"
-	"github.com/spiral/roadrunner/v2/pkg/payload"
-)
-
-// Response handles PSR7 response logic.
-type Response struct {
-	// Status contains response status.
-	Status int `json:"status"`
-
-	// Header contains list of response headers.
-	Headers map[string][]string `json:"headers"`
-
-	// associated Body payload.
-	Body interface{}
-}
-
-// NewResponse creates new response based on given pool payload.
-func NewResponse(p *payload.Payload) (*Response, error) {
-	const op = errors.Op("http_response")
-	r := &Response{Body: p.Body}
-	if err := json.Unmarshal(p.Context, r); err != nil {
-		return nil, errors.E(op, errors.Decode, err)
-	}
-
-	return r, nil
-}
-
-// Write writes response headers, status and body into ResponseWriter.
-func (r *Response) Write(w http.ResponseWriter) error {
-	// INFO map is the reference type in golang
-	p := handlePushHeaders(r.Headers)
-	if pusher, ok := w.(http.Pusher); ok {
-		for _, v := range p {
-			err := pusher.Push(v, nil)
-			if err != nil {
-				return err
-			}
-		}
-	}
-
-	handleTrailers(r.Headers)
-	for n, h := range r.Headers {
-		for _, v := range h {
-			w.Header().Add(n, v)
-		}
-	}
-
-	w.WriteHeader(r.Status)
-
-	if data, ok := r.Body.([]byte); ok {
-		_, err := w.Write(data)
-		if err != nil {
-			return handleWriteError(err)
-		}
-	}
-
-	if rc, ok := r.Body.(io.Reader); ok {
-		if _, err := io.Copy(w, rc); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func handlePushHeaders(h map[string][]string) []string {
-	var p []string
-	pushHeader, ok := h[http2pushHeaderKey]
-	if !ok {
-		return p
-	}
-
-	p = append(p, pushHeader...)
-
-	delete(h, http2pushHeaderKey)
-
-	return p
-}
-
-func handleTrailers(h map[string][]string) {
-	trailers, ok := h[TrailerHeaderKey]
-	if !ok {
-		return
-	}
-
-	for _, tr := range trailers {
-		for _, n := range strings.Split(tr, ",") {
-			n = strings.Trim(n, "\t ")
-			if v, ok := h[n]; ok {
-				h["Trailer:"+n] = v
-
-				delete(h, n)
-			}
-		}
-	}
-
-	delete(h, TrailerHeaderKey)
-}
diff --git a/pkg/worker_handler/uploads.go b/pkg/worker_handler/uploads.go
deleted file mode 100644
index e695000e..00000000
--- a/pkg/worker_handler/uploads.go
+++ /dev/null
@@ -1,159 +0,0 @@
-package handler
-
-import (
-	"github.com/spiral/roadrunner/v2/plugins/http/config"
-	"github.com/spiral/roadrunner/v2/plugins/logger"
-
-	"io"
-	"io/ioutil"
-	"mime/multipart"
-	"os"
-	"sync"
-)
-
-const (
-	// UploadErrorOK - no error, the file uploaded with success.
-	UploadErrorOK = 0
-
-	// UploadErrorNoFile - no file was uploaded.
-	UploadErrorNoFile = 4
-
-	// UploadErrorNoTmpDir - missing a temporary folder.
-	UploadErrorNoTmpDir = 6
-
-	// UploadErrorCantWrite - failed to write file to disk.
-	UploadErrorCantWrite = 7
-
-	// UploadErrorExtension - forbidden file extension.
-	UploadErrorExtension = 8
-)
-
-// Uploads tree manages uploaded files tree and temporary files.
-type Uploads struct {
-	// associated temp directory and forbidden extensions.
-	cfg config.Uploads
-
-	// pre processed data tree for Uploads.
-	tree fileTree
-
-	// flat list of all file Uploads.
-	list []*FileUpload
-}
-
-// MarshalJSON marshal tree tree into JSON.
-func (u *Uploads) MarshalJSON() ([]byte, error) {
-	return json.Marshal(u.tree)
-}
-
-// Open moves all uploaded files to temp directory, return error in case of issue with temp directory. File errors
-// will be handled individually.
-func (u *Uploads) Open(log logger.Logger) {
-	var wg sync.WaitGroup
-	for _, f := range u.list {
-		wg.Add(1)
-		go func(f *FileUpload) {
-			defer wg.Done()
-			err := f.Open(u.cfg)
-			if err != nil && log != nil {
-				log.Error("error opening the file", "err", err)
-			}
-		}(f)
-	}
-
-	wg.Wait()
-}
-
-// Clear deletes all temporary files.
-func (u *Uploads) Clear(log logger.Logger) {
-	for _, f := range u.list {
-		if f.TempFilename != "" && exists(f.TempFilename) {
-			err := os.Remove(f.TempFilename)
-			if err != nil && log != nil {
-				log.Error("error removing the file", "err", err)
-			}
-		}
-	}
-}
-
-// FileUpload represents singular file NewUpload.
-type FileUpload struct {
-	// ID contains filename specified by the client.
-	Name string `json:"name"`
-
-	// Mime contains mime-type provided by the client.
-	Mime string `json:"mime"`
-
-	// Size of the uploaded file.
-	Size int64 `json:"size"`
-
-	// Error indicates file upload error (if any). See http://php.net/manual/en/features.file-upload.errors.php
-	Error int `json:"error"`
-
-	// TempFilename points to temporary file location.
-	TempFilename string `json:"tmpName"`
-
-	// associated file header
-	header *multipart.FileHeader
-}
-
-// NewUpload wraps net/http upload into PRS-7 compatible structure.
-func NewUpload(f *multipart.FileHeader) *FileUpload {
-	return &FileUpload{
-		Name:   f.Filename,
-		Mime:   f.Header.Get("Content-Type"),
-		Error:  UploadErrorOK,
-		header: f,
-	}
-}
-
-// Open moves file content into temporary file available for PHP.
-// NOTE:
-// There is 2 deferred functions, and in case of getting 2 errors from both functions
-// error from close of temp file would be overwritten by error from the main file
-// STACK
-// DEFER FILE CLOSE (2)
-// DEFER TMP CLOSE  (1)
-func (f *FileUpload) Open(cfg config.Uploads) (err error) {
-	if cfg.Forbids(f.Name) {
-		f.Error = UploadErrorExtension
-		return nil
-	}
-
-	file, err := f.header.Open()
-	if err != nil {
-		f.Error = UploadErrorNoFile
-		return err
-	}
-
-	defer func() {
-		// close the main file
-		err = file.Close()
-	}()
-
-	tmp, err := ioutil.TempFile(cfg.TmpDir(), "upload")
-	if err != nil {
-		// most likely cause of this issue is missing tmp dir
-		f.Error = UploadErrorNoTmpDir
-		return err
-	}
-
-	f.TempFilename = tmp.Name()
-	defer func() {
-		// close the temp file
-		err = tmp.Close()
-	}()
-
-	if f.Size, err = io.Copy(tmp, file); err != nil {
-		f.Error = UploadErrorCantWrite
-	}
-
-	return err
-}
-
-// exists if file exists.
-func exists(path string) bool {
-	if _, err := os.Stat(path); os.IsNotExist(err) {
-		return false
-	}
-	return true
-}