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swarm/api/http: refactored http package (#17309)

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This commit is contained in:
Elad 2018-08-07 11:56:55 +02:00 committed by Balint Gabor
parent 64a4e89504
commit 93fe16b0a5
11 changed files with 822 additions and 1270 deletions
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3
swarm/api/api.go
View File

@ -339,8 +339,7 @@ func (a *API) Get(ctx context.Context, manifestAddr storage.Address, path string
if err != nil {
apiGetNotFound.Inc(1)
status = http.StatusNotFound
log.Warn(fmt.Sprintf("loadManifestTrie error: %v", err))
return
return nil, "", http.StatusNotFound, nil, err
}
log.Debug("trie getting entry", "key", manifestAddr, "path", path)

208
swarm/api/http/error.go
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@ -1,208 +0,0 @@
// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
/*
Show nicely (but simple) formatted HTML error pages (or respond with JSON
if the appropriate `Accept` header is set)) for the http package.
*/
package http
import (
"encoding/json"
"fmt"
"html/template"
"net/http"
"strings"
"time"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/metrics"
"github.com/ethereum/go-ethereum/swarm/api"
l "github.com/ethereum/go-ethereum/swarm/log"
)
//templateMap holds a mapping of an HTTP error code to a template
var templateMap map[int]*template.Template
var caseErrors []CaseError
//metrics variables
var (
htmlCounter = metrics.NewRegisteredCounter("api.http.errorpage.html.count", nil)
jsonCounter = metrics.NewRegisteredCounter("api.http.errorpage.json.count", nil)
)
//parameters needed for formatting the correct HTML page
type ResponseParams struct {
Msg string
Code int
Timestamp string
template *template.Template
Details template.HTML
}
//a custom error case struct that would be used to store validators and
//additional error info to display with client responses.
type CaseError struct {
Validator func(*Request) bool
Msg func(*Request) string
}
//we init the error handling right on boot time, so lookup and http response is fast
func init() {
initErrHandling()
}
func initErrHandling() {
//pages are saved as strings - get these strings
genErrPage := GetGenericErrorPage()
notFoundPage := GetNotFoundErrorPage()
multipleChoicesPage := GetMultipleChoicesErrorPage()
//map the codes to the available pages
tnames := map[int]string{
0: genErrPage, //default
http.StatusBadRequest: genErrPage,
http.StatusNotFound: notFoundPage,
http.StatusMultipleChoices: multipleChoicesPage,
http.StatusInternalServerError: genErrPage,
}
templateMap = make(map[int]*template.Template)
for code, tname := range tnames {
//assign formatted HTML to the code
templateMap[code] = template.Must(template.New(fmt.Sprintf("%d", code)).Parse(tname))
}
caseErrors = []CaseError{
{
Validator: func(r *Request) bool { return r.uri != nil && r.uri.Addr != "" && strings.HasPrefix(r.uri.Addr, "0x") },
Msg: func(r *Request) string {
uriCopy := r.uri
uriCopy.Addr = strings.TrimPrefix(uriCopy.Addr, "0x")
return fmt.Sprintf(`The requested hash seems to be prefixed with '0x'. You will be redirected to the correct URL within 5 seconds.<br/>
Please click <a href='%[1]s'>here</a> if your browser does not redirect you.<script>setTimeout("location.href='%[1]s';",5000);</script>`, "/"+uriCopy.String())
},
}}
}
//ValidateCaseErrors is a method that process the request object through certain validators
//that assert if certain conditions are met for further information to log as an error
func ValidateCaseErrors(r *Request) string {
for _, err := range caseErrors {
if err.Validator(r) {
return err.Msg(r)
}
}
return ""
}
//ShowMultipeChoices is used when a user requests a resource in a manifest which results
//in ambiguous results. It returns a HTML page with clickable links of each of the entry
//in the manifest which fits the request URI ambiguity.
//For example, if the user requests bzz:/<hash>/read and that manifest contains entries
//"readme.md" and "readinglist.txt", a HTML page is returned with this two links.
//This only applies if the manifest has no default entry
func ShowMultipleChoices(w http.ResponseWriter, req *Request, list api.ManifestList) {
msg := ""
if list.Entries == nil {
Respond(w, req, "Could not resolve", http.StatusInternalServerError)
return
}
//make links relative
//requestURI comes with the prefix of the ambiguous path, e.g. "read" for "readme.md" and "readinglist.txt"
//to get clickable links, need to remove the ambiguous path, i.e. "read"
idx := strings.LastIndex(req.RequestURI, "/")
if idx == -1 {
Respond(w, req, "Internal Server Error", http.StatusInternalServerError)
return
}
//remove ambiguous part
base := req.RequestURI[:idx+1]
for _, e := range list.Entries {
//create clickable link for each entry
msg += "<a href='" + base + e.Path + "'>" + e.Path + "</a><br/>"
}
Respond(w, req, msg, http.StatusMultipleChoices)
}
//Respond is used to show an HTML page to a client.
//If there is an `Accept` header of `application/json`, JSON will be returned instead
//The function just takes a string message which will be displayed in the error page.
//The code is used to evaluate which template will be displayed
//(and return the correct HTTP status code)
func Respond(w http.ResponseWriter, req *Request, msg string, code int) {
additionalMessage := ValidateCaseErrors(req)
switch code {
case http.StatusInternalServerError:
log.Output(msg, log.LvlError, l.CallDepth, "ruid", req.ruid, "code", code)
case http.StatusMultipleChoices:
log.Output(msg, log.LvlDebug, l.CallDepth, "ruid", req.ruid, "code", code)
listURI := api.URI{
Scheme: "bzz-list",
Addr: req.uri.Addr,
Path: req.uri.Path,
}
additionalMessage = fmt.Sprintf(`<a href="/%s">multiple choices</a>`, listURI.String())
default:
log.Output(msg, log.LvlDebug, l.CallDepth, "ruid", req.ruid, "code", code)
}
if code >= 400 {
w.Header().Del("Cache-Control") //avoid sending cache headers for errors!
w.Header().Del("ETag")
}
respond(w, &req.Request, &ResponseParams{
Code: code,
Msg: msg,
Details: template.HTML(additionalMessage),
Timestamp: time.Now().Format(time.RFC1123),
template: getTemplate(code),
})
}
//evaluate if client accepts html or json response
func respond(w http.ResponseWriter, r *http.Request, params *ResponseParams) {
w.WriteHeader(params.Code)
if r.Header.Get("Accept") == "application/json" {
respondJSON(w, params)
} else {
respondHTML(w, params)
}
}
//return a HTML page
func respondHTML(w http.ResponseWriter, params *ResponseParams) {
htmlCounter.Inc(1)
err := params.template.Execute(w, params)
if err != nil {
log.Error(err.Error())
}
}
//return JSON
func respondJSON(w http.ResponseWriter, params *ResponseParams) {
jsonCounter.Inc(1)
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(params)
}
//get the HTML template for a given code
func getTemplate(code int) *template.Template {
if val, tmpl := templateMap[code]; tmpl {
return val
}
return templateMap[0]
}

559
swarm/api/http/error_templates.go
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File diff suppressed because one or more lines are too long

95
swarm/api/http/middleware.go Normal file
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@ -0,0 +1,95 @@
package http
import (
"fmt"
"net/http"
"runtime/debug"
"strings"
"github.com/ethereum/go-ethereum/metrics"
"github.com/ethereum/go-ethereum/swarm/api"
"github.com/ethereum/go-ethereum/swarm/log"
"github.com/ethereum/go-ethereum/swarm/spancontext"
"github.com/pborman/uuid"
)
// Adapt chains h (main request handler) main handler to adapters (middleware handlers)
// Please note that the order of execution for `adapters` is FIFO (adapters[0] will be executed first)
func Adapt(h http.Handler, adapters ...Adapter) http.Handler {
for i := range adapters {
adapter := adapters[len(adapters)-1-i]
h = adapter(h)
}
return h
}
type Adapter func(http.Handler) http.Handler
func SetRequestID(h http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
r = r.WithContext(SetRUID(r.Context(), uuid.New()[:8]))
metrics.GetOrRegisterCounter(fmt.Sprintf("http.request.%s", r.Method), nil).Inc(1)
log.Info("created ruid for request", "ruid", GetRUID(r.Context()), "method", r.Method, "url", r.RequestURI)
h.ServeHTTP(w, r)
})
}
func ParseURI(h http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
uri, err := api.Parse(strings.TrimLeft(r.URL.Path, "/"))
if err != nil {
w.WriteHeader(http.StatusBadRequest)
RespondError(w, r, fmt.Sprintf("invalid URI %q", r.URL.Path), http.StatusBadRequest)
return
}
if uri.Addr != "" && strings.HasPrefix(uri.Addr, "0x") {
uri.Addr = strings.TrimPrefix(uri.Addr, "0x")
msg := fmt.Sprintf(`The requested hash seems to be prefixed with '0x'. You will be redirected to the correct URL within 5 seconds.<br/>
Please click <a href='%[1]s'>here</a> if your browser does not redirect you within 5 seconds.<script>setTimeout("location.href='%[1]s';",5000);</script>`, "/"+uri.String())
w.WriteHeader(http.StatusNotFound)
w.Write([]byte(msg))
return
}
ctx := r.Context()
r = r.WithContext(SetURI(ctx, uri))
log.Debug("parsed request path", "ruid", GetRUID(r.Context()), "method", r.Method, "uri.Addr", uri.Addr, "uri.Path", uri.Path, "uri.Scheme", uri.Scheme)
h.ServeHTTP(w, r)
})
}
func InitLoggingResponseWriter(h http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
writer := newLoggingResponseWriter(w)
h.ServeHTTP(writer, r)
})
}
func InstrumentOpenTracing(h http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
uri := GetURI(r.Context())
if uri == nil || r.Method == "" || (uri != nil && uri.Scheme == "") {
h.ServeHTTP(w, r) // soft fail
return
}
spanName := fmt.Sprintf("http.%s.%s", r.Method, uri.Scheme)
ctx, sp := spancontext.StartSpan(r.Context(), spanName)
defer sp.Finish()
h.ServeHTTP(w, r.WithContext(ctx))
})
}
func RecoverPanic(h http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
defer func() {
if err := recover(); err != nil {
log.Error("panic recovery!", "stack trace", debug.Stack(), "url", r.URL.String(), "headers", r.Header)
}
}()
h.ServeHTTP(w, r)
})
}

139
swarm/api/http/response.go Normal file
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@ -0,0 +1,139 @@
// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package http
import (
"encoding/json"
"fmt"
"html/template"
"net/http"
"strings"
"time"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/metrics"
"github.com/ethereum/go-ethereum/swarm/api"
)
//metrics variables
var (
htmlCounter = metrics.NewRegisteredCounter("api.http.errorpage.html.count", nil)
jsonCounter = metrics.NewRegisteredCounter("api.http.errorpage.json.count", nil)
plaintextCounter = metrics.NewRegisteredCounter("api.http.errorpage.plaintext.count", nil)
)
//parameters needed for formatting the correct HTML page
type ResponseParams struct {
Msg template.HTML
Code int
Timestamp string
template *template.Template
Details template.HTML
}
//ShowMultipeChoices is used when a user requests a resource in a manifest which results
//in ambiguous results. It returns a HTML page with clickable links of each of the entry
//in the manifest which fits the request URI ambiguity.
//For example, if the user requests bzz:/<hash>/read and that manifest contains entries
//"readme.md" and "readinglist.txt", a HTML page is returned with this two links.
//This only applies if the manifest has no default entry
func ShowMultipleChoices(w http.ResponseWriter, r *http.Request, list api.ManifestList) {
log.Debug("ShowMultipleChoices", "ruid", GetRUID(r.Context()), "uri", GetURI(r.Context()))
msg := ""
if list.Entries == nil {
RespondError(w, r, "Could not resolve", http.StatusInternalServerError)
return
}
requestUri := strings.TrimPrefix(r.RequestURI, "/")
uri, err := api.Parse(requestUri)
if err != nil {
RespondError(w, r, "Bad Request", http.StatusBadRequest)
}
uri.Scheme = "bzz-list"
//request the same url just with bzz-list
msg += fmt.Sprintf("Disambiguation:<br/>Your request may refer to multiple choices.<br/>Click <a class=\"orange\" href='"+"/"+uri.String()+"'>here</a> if your browser does not redirect you within 5 seconds.<script>setTimeout(\"location.href='%s';\",5000);</script><br/>", "/"+uri.String())
RespondTemplate(w, r, "error", msg, http.StatusMultipleChoices)
}
func RespondTemplate(w http.ResponseWriter, r *http.Request, templateName, msg string, code int) {
log.Debug("RespondTemplate", "ruid", GetRUID(r.Context()), "uri", GetURI(r.Context()))
respond(w, r, &ResponseParams{
Code: code,
Msg: template.HTML(msg),
Timestamp: time.Now().Format(time.RFC1123),
template: TemplatesMap[templateName],
})
}
func RespondError(w http.ResponseWriter, r *http.Request, msg string, code int) {
log.Debug("RespondError", "ruid", GetRUID(r.Context()), "uri", GetURI(r.Context()))
RespondTemplate(w, r, "error", msg, code)
}
//evaluate if client accepts html or json response
func respond(w http.ResponseWriter, r *http.Request, params *ResponseParams) {
w.WriteHeader(params.Code)
if params.Code >= 400 {
w.Header().Del("Cache-Control") //avoid sending cache headers for errors!
w.Header().Del("ETag")
}
acceptHeader := r.Header.Get("Accept")
// this cannot be in a switch form since an Accept header can be in the form of "Accept: */*, text/html, application/xhtml+xml, application/xml;q=0.9, */*;q=0.8"
if strings.Contains(acceptHeader, "application/json") {
if err := respondJSON(w, r, params); err != nil {
RespondError(w, r, "Internal server error", http.StatusInternalServerError)
}
} else if strings.Contains(acceptHeader, "text/html") {
respondHTML(w, r, params)
} else {
respondPlaintext(w, r, params) //returns nice errors for curl
}
}
//return a HTML page
func respondHTML(w http.ResponseWriter, r *http.Request, params *ResponseParams) {
htmlCounter.Inc(1)
log.Debug("respondHTML", "ruid", GetRUID(r.Context()))
err := params.template.Execute(w, params)
if err != nil {
log.Error(err.Error())
}
}
//return JSON
func respondJSON(w http.ResponseWriter, r *http.Request, params *ResponseParams) error {
jsonCounter.Inc(1)
log.Debug("respondJSON", "ruid", GetRUID(r.Context()))
w.Header().Set("Content-Type", "application/json")
return json.NewEncoder(w).Encode(params)
}
//return plaintext
func respondPlaintext(w http.ResponseWriter, r *http.Request, params *ResponseParams) error {
plaintextCounter.Inc(1)
log.Debug("respondPlaintext", "ruid", GetRUID(r.Context()))
w.Header().Set("Content-Type", "text/plain")
strToWrite := "Code: " + fmt.Sprintf("%d", params.Code) + "\n"
strToWrite += "Message: " + string(params.Msg) + "\n"
strToWrite += "Timestamp: " + params.Timestamp + "\n"
_, err := w.Write([]byte(strToWrite))
return err
}

2
swarm/api/http/error_test.go → swarm/api/http/response_test.go
View File

@ -44,7 +44,7 @@ func TestError(t *testing.T) {
defer resp.Body.Close()
respbody, err = ioutil.ReadAll(resp.Body)
if resp.StatusCode != 400 && !strings.Contains(string(respbody), "Invalid URI &#34;/this_should_fail_as_no_bzz_protocol_present&#34;: unknown scheme") {
if resp.StatusCode != 404 && !strings.Contains(string(respbody), "Invalid URI &#34;/this_should_fail_as_no_bzz_protocol_present&#34;: unknown scheme") {
t.Fatalf("Response body does not match, expected: %v, to contain: %v; received code %d, expected code: %d", string(respbody), "Invalid bzz URI: unknown scheme", 400, resp.StatusCode)
}

38
swarm/api/http/sctx.go Normal file
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@ -0,0 +1,38 @@
package http
import (
"context"
"github.com/ethereum/go-ethereum/swarm/api"
"github.com/ethereum/go-ethereum/swarm/sctx"
)
type contextKey int
const (
uriKey contextKey = iota
)
func GetRUID(ctx context.Context) string {
v, ok := ctx.Value(sctx.HTTPRequestIDKey).(string)
if ok {
return v
}
return "xxxxxxxx"
}
func SetRUID(ctx context.Context, ruid string) context.Context {
return context.WithValue(ctx, sctx.HTTPRequestIDKey, ruid)
}
func GetURI(ctx context.Context) *api.URI {
v, ok := ctx.Value(uriKey).(*api.URI)
if ok {
return v
}
return nil
}
func SetURI(ctx context.Context, uri *api.URI) context.Context {
return context.WithValue(ctx, uriKey, uri)
}

563
swarm/api/http/server.go
View File

@ -41,12 +41,9 @@ import (
"github.com/ethereum/go-ethereum/metrics"
"github.com/ethereum/go-ethereum/swarm/api"
"github.com/ethereum/go-ethereum/swarm/log"
"github.com/ethereum/go-ethereum/swarm/spancontext"
"github.com/ethereum/go-ethereum/swarm/storage"
"github.com/ethereum/go-ethereum/swarm/storage/mru"
opentracing "github.com/opentracing/opentracing-go"
"github.com/pborman/uuid"
"github.com/rs/cors"
)
@ -72,6 +69,17 @@ var (
getListFail = metrics.NewRegisteredCounter("api.http.get.list.fail", nil)
)
type methodHandler map[string]http.Handler
func (m methodHandler) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
v, ok := m[r.Method]
if ok {
v.ServeHTTP(rw, r)
return
}
rw.WriteHeader(http.StatusMethodNotAllowed)
}
func NewServer(api *api.API, corsString string) *Server {
var allowedOrigins []string
for _, domain := range strings.Split(corsString, ",") {
@ -84,20 +92,79 @@ func NewServer(api *api.API, corsString string) *Server {
AllowedHeaders: []string{"*"},
})
mux := http.NewServeMux()
server := &Server{api: api}
mux.HandleFunc("/bzz:/", server.WrapHandler(true, server.HandleBzz))
mux.HandleFunc("/bzz-raw:/", server.WrapHandler(true, server.HandleBzzRaw))
mux.HandleFunc("/bzz-immutable:/", server.WrapHandler(true, server.HandleBzzImmutable))
mux.HandleFunc("/bzz-hash:/", server.WrapHandler(true, server.HandleBzzHash))
mux.HandleFunc("/bzz-list:/", server.WrapHandler(true, server.HandleBzzList))
mux.HandleFunc("/bzz-resource:/", server.WrapHandler(true, server.HandleBzzResource))
mux.HandleFunc("/", server.WrapHandler(false, server.HandleRootPaths))
mux.HandleFunc("/robots.txt", server.WrapHandler(false, server.HandleRootPaths))
mux.HandleFunc("/favicon.ico", server.WrapHandler(false, server.HandleRootPaths))
defaultMiddlewares := []Adapter{
RecoverPanic,
SetRequestID,
InitLoggingResponseWriter,
ParseURI,
InstrumentOpenTracing,
}
mux := http.NewServeMux()
mux.Handle("/bzz:/", methodHandler{
"GET": Adapt(
http.HandlerFunc(server.HandleBzzGet),
defaultMiddlewares...,
),
"POST": Adapt(
http.HandlerFunc(server.HandlePostFiles),
defaultMiddlewares...,
),
"DELETE": Adapt(
http.HandlerFunc(server.HandleDelete),
defaultMiddlewares...,
),
})
mux.Handle("/bzz-raw:/", methodHandler{
"GET": Adapt(
http.HandlerFunc(server.HandleGet),
defaultMiddlewares...,
),
"POST": Adapt(
http.HandlerFunc(server.HandlePostRaw),
defaultMiddlewares...,
),
})
mux.Handle("/bzz-immutable:/", methodHandler{
"GET": Adapt(
http.HandlerFunc(server.HandleGet),
defaultMiddlewares...,
),
})
mux.Handle("/bzz-hash:/", methodHandler{
"GET": Adapt(
http.HandlerFunc(server.HandleGet),
defaultMiddlewares...,
),
})
mux.Handle("/bzz-list:/", methodHandler{
"GET": Adapt(
http.HandlerFunc(server.HandleGetList),
defaultMiddlewares...,
),
})
mux.Handle("/bzz-resource:/", methodHandler{
"GET": Adapt(
http.HandlerFunc(server.HandleGetResource),
defaultMiddlewares...,
),
"POST": Adapt(
http.HandlerFunc(server.HandlePostResource),
defaultMiddlewares...,
),
})
mux.Handle("/", methodHandler{
"GET": Adapt(
http.HandlerFunc(server.HandleRootPaths),
SetRequestID,
InitLoggingResponseWriter,
),
})
server.Handler = c.Handler(mux)
return server
}
@ -105,139 +172,6 @@ func (s *Server) ListenAndServe(addr string) error {
return http.ListenAndServe(addr, s)
}
func (s *Server) HandleRootPaths(w http.ResponseWriter, r *Request) {
switch r.Method {
case http.MethodGet:
if r.RequestURI == "/" {
if strings.Contains(r.Header.Get("Accept"), "text/html") {
err := landingPageTemplate.Execute(w, nil)
if err != nil {
log.Error(fmt.Sprintf("error rendering landing page: %s", err))
}
return
}
if strings.Contains(r.Header.Get("Accept"), "application/json") {
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode("Welcome to Swarm!")
return
}
}
if r.URL.Path == "/robots.txt" {
w.Header().Set("Last-Modified", time.Now().Format(http.TimeFormat))
fmt.Fprintf(w, "User-agent: *\nDisallow: /")
return
}
Respond(w, r, "Bad Request", http.StatusBadRequest)
default:
Respond(w, r, "Not Found", http.StatusNotFound)
}
}
func (s *Server) HandleBzz(w http.ResponseWriter, r *Request) {
switch r.Method {
case http.MethodGet:
log.Debug("handleGetBzz")
if r.Header.Get("Accept") == "application/x-tar" {
reader, err := s.api.GetDirectoryTar(r.Context(), r.uri)
if err != nil {
Respond(w, r, fmt.Sprintf("Had an error building the tarball: %v", err), http.StatusInternalServerError)
}
defer reader.Close()
w.Header().Set("Content-Type", "application/x-tar")
w.WriteHeader(http.StatusOK)
io.Copy(w, reader)
return
}
s.HandleGetFile(w, r)
case http.MethodPost:
log.Debug("handlePostFiles")
s.HandlePostFiles(w, r)
case http.MethodDelete:
log.Debug("handleBzzDelete")
s.HandleDelete(w, r)
default:
Respond(w, r, "Method not allowed", http.StatusMethodNotAllowed)
}
}
func (s *Server) HandleBzzRaw(w http.ResponseWriter, r *Request) {
switch r.Method {
case http.MethodGet:
log.Debug("handleGetRaw")
s.HandleGet(w, r)
case http.MethodPost:
log.Debug("handlePostRaw")
s.HandlePostRaw(w, r)
default:
Respond(w, r, "Method not allowed", http.StatusMethodNotAllowed)
}
}
func (s *Server) HandleBzzImmutable(w http.ResponseWriter, r *Request) {
switch r.Method {
case http.MethodGet:
log.Debug("handleGetHash")
s.HandleGetList(w, r)
default:
Respond(w, r, "Method not allowed", http.StatusMethodNotAllowed)
}
}
func (s *Server) HandleBzzHash(w http.ResponseWriter, r *Request) {
switch r.Method {
case http.MethodGet:
log.Debug("handleGetHash")
s.HandleGet(w, r)
default:
Respond(w, r, "Method not allowed", http.StatusMethodNotAllowed)
}
}
func (s *Server) HandleBzzList(w http.ResponseWriter, r *Request) {
switch r.Method {
case http.MethodGet:
log.Debug("handleGetHash")
s.HandleGetList(w, r)
default:
Respond(w, r, "Method not allowed", http.StatusMethodNotAllowed)
}
}
func (s *Server) HandleBzzResource(w http.ResponseWriter, r *Request) {
switch r.Method {
case http.MethodGet:
log.Debug("handleGetResource")
s.HandleGetResource(w, r)
case http.MethodPost:
log.Debug("handlePostResource")
s.HandlePostResource(w, r)
default:
Respond(w, r, "Method not allowed", http.StatusMethodNotAllowed)
}
}
func (s *Server) WrapHandler(parseBzzUri bool, h func(http.ResponseWriter, *Request)) http.HandlerFunc {
return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
defer metrics.GetOrRegisterResettingTimer(fmt.Sprintf("http.request.%s.time", r.Method), nil).UpdateSince(time.Now())
req := &Request{Request: *r, ruid: uuid.New()[:8]}
metrics.GetOrRegisterCounter(fmt.Sprintf("http.request.%s", r.Method), nil).Inc(1)
log.Info("serving request", "ruid", req.ruid, "method", r.Method, "url", r.RequestURI)
// wrapping the ResponseWriter, so that we get the response code set by http.ServeContent
w := newLoggingResponseWriter(rw)
if parseBzzUri {
uri, err := api.Parse(strings.TrimLeft(r.URL.Path, "/"))
if err != nil {
Respond(w, req, fmt.Sprintf("invalid URI %q", r.URL.Path), http.StatusBadRequest)
return
}
req.uri = uri
log.Debug("parsed request path", "ruid", req.ruid, "method", req.Method, "uri.Addr", req.uri.Addr, "uri.Path", req.uri.Path, "uri.Scheme", req.uri.Scheme)
}
h(w, req) // call original
log.Info("served response", "ruid", req.ruid, "code", w.statusCode)
})
}
// browser API for registering bzz url scheme handlers:
// https://developer.mozilla.org/en/docs/Web-based_protocol_handlers
// electron (chromium) api for registering bzz url scheme handlers:
@ -247,59 +181,81 @@ type Server struct {
api *api.API
}
// Request wraps http.Request and also includes the parsed bzz URI
type Request struct {
http.Request
func (s *Server) HandleBzzGet(w http.ResponseWriter, r *http.Request) {
log.Debug("handleBzzGet", "ruid", GetRUID(r.Context()))
if r.Header.Get("Accept") == "application/x-tar" {
uri := GetURI(r.Context())
reader, err := s.api.GetDirectoryTar(r.Context(), uri)
if err != nil {
RespondError(w, r, fmt.Sprintf("Had an error building the tarball: %v", err), http.StatusInternalServerError)
}
defer reader.Close()
uri *api.URI
ruid string // request unique id
w.Header().Set("Content-Type", "application/x-tar")
w.WriteHeader(http.StatusOK)
io.Copy(w, reader)
return
}
s.HandleGetFile(w, r)
}
func (s *Server) HandleRootPaths(w http.ResponseWriter, r *http.Request) {
switch r.RequestURI {
case "/":
RespondTemplate(w, r, "landing-page", "Swarm: Please request a valid ENS or swarm hash with the appropriate bzz scheme", 200)
return
case "/robots.txt":
w.Header().Set("Last-Modified", time.Now().Format(http.TimeFormat))
fmt.Fprintf(w, "User-agent: *\nDisallow: /")
case "/favicon.ico":
w.WriteHeader(http.StatusOK)
w.Write(faviconBytes)
default:
RespondError(w, r, "Not Found", http.StatusNotFound)
}
}
// HandlePostRaw handles a POST request to a raw bzz-raw:/ URI, stores the request
// body in swarm and returns the resulting storage address as a text/plain response
func (s *Server) HandlePostRaw(w http.ResponseWriter, r *Request) {
log.Debug("handle.post.raw", "ruid", r.ruid)
func (s *Server) HandlePostRaw(w http.ResponseWriter, r *http.Request) {
ruid := GetRUID(r.Context())
log.Debug("handle.post.raw", "ruid", ruid)
postRawCount.Inc(1)
ctx := r.Context()
var sp opentracing.Span
ctx, sp = spancontext.StartSpan(
ctx,
"http.post.raw")
defer sp.Finish()
toEncrypt := false
if r.uri.Addr == "encrypt" {
uri := GetURI(r.Context())
if uri.Addr == "encrypt" {
toEncrypt = true
}
if r.uri.Path != "" {
if uri.Path != "" {
postRawFail.Inc(1)
Respond(w, r, "raw POST request cannot contain a path", http.StatusBadRequest)
RespondError(w, r, "raw POST request cannot contain a path", http.StatusBadRequest)
return
}
if r.uri.Addr != "" && r.uri.Addr != "encrypt" {
if uri.Addr != "" && uri.Addr != "encrypt" {
postRawFail.Inc(1)
Respond(w, r, "raw POST request addr can only be empty or \"encrypt\"", http.StatusBadRequest)
RespondError(w, r, "raw POST request addr can only be empty or \"encrypt\"", http.StatusBadRequest)
return
}
if r.Header.Get("Content-Length") == "" {
postRawFail.Inc(1)
Respond(w, r, "missing Content-Length header in request", http.StatusBadRequest)
RespondError(w, r, "missing Content-Length header in request", http.StatusBadRequest)
return
}
addr, _, err := s.api.Store(ctx, r.Body, r.ContentLength, toEncrypt)
addr, _, err := s.api.Store(r.Context(), r.Body, r.ContentLength, toEncrypt)
if err != nil {
postRawFail.Inc(1)
Respond(w, r, err.Error(), http.StatusInternalServerError)
RespondError(w, r, err.Error(), http.StatusInternalServerError)
return
}
log.Debug("stored content", "ruid", r.ruid, "key", addr)
log.Debug("stored content", "ruid", ruid, "key", addr)
w.Header().Set("Content-Type", "text/plain")
w.WriteHeader(http.StatusOK)
@ -311,55 +267,49 @@ func (s *Server) HandlePostRaw(w http.ResponseWriter, r *Request) {
// (either a tar archive or multipart form), adds those files either to an
// existing manifest or to a new manifest under <path> and returns the
// resulting manifest hash as a text/plain response
func (s *Server) HandlePostFiles(w http.ResponseWriter, r *Request) {
log.Debug("handle.post.files", "ruid", r.ruid)
func (s *Server) HandlePostFiles(w http.ResponseWriter, r *http.Request) {
ruid := GetRUID(r.Context())
log.Debug("handle.post.files", "ruid", ruid)
postFilesCount.Inc(1)
var sp opentracing.Span
ctx := r.Context()
ctx, sp = spancontext.StartSpan(
ctx,
"http.post.files")
defer sp.Finish()
contentType, params, err := mime.ParseMediaType(r.Header.Get("Content-Type"))
if err != nil {
postFilesFail.Inc(1)
Respond(w, r, err.Error(), http.StatusBadRequest)
RespondError(w, r, err.Error(), http.StatusBadRequest)
return
}
toEncrypt := false
if r.uri.Addr == "encrypt" {
uri := GetURI(r.Context())
if uri.Addr == "encrypt" {
toEncrypt = true
}
var addr storage.Address
if r.uri.Addr != "" && r.uri.Addr != "encrypt" {
addr, err = s.api.Resolve(r.Context(), r.uri)
if uri.Addr != "" && uri.Addr != "encrypt" {
addr, err = s.api.Resolve(r.Context(), uri)
if err != nil {
postFilesFail.Inc(1)
Respond(w, r, fmt.Sprintf("cannot resolve %s: %s", r.uri.Addr, err), http.StatusInternalServerError)
RespondError(w, r, fmt.Sprintf("cannot resolve %s: %s", uri.Addr, err), http.StatusInternalServerError)
return
}
log.Debug("resolved key", "ruid", r.ruid, "key", addr)
log.Debug("resolved key", "ruid", ruid, "key", addr)
} else {
addr, err = s.api.NewManifest(r.Context(), toEncrypt)
if err != nil {
postFilesFail.Inc(1)
Respond(w, r, err.Error(), http.StatusInternalServerError)
RespondError(w, r, err.Error(), http.StatusInternalServerError)
return
}
log.Debug("new manifest", "ruid", r.ruid, "key", addr)
log.Debug("new manifest", "ruid", ruid, "key", addr)
}
newAddr, err := s.api.UpdateManifest(ctx, addr, func(mw *api.ManifestWriter) error {
newAddr, err := s.api.UpdateManifest(r.Context(), addr, func(mw *api.ManifestWriter) error {
switch contentType {
case "application/x-tar":
_, err := s.handleTarUpload(r, mw)
if err != nil {
Respond(w, r, fmt.Sprintf("error uploading tarball: %v", err), http.StatusInternalServerError)
RespondError(w, r, fmt.Sprintf("error uploading tarball: %v", err), http.StatusInternalServerError)
return err
}
return nil
@ -372,30 +322,31 @@ func (s *Server) HandlePostFiles(w http.ResponseWriter, r *Request) {
})
if err != nil {
postFilesFail.Inc(1)
Respond(w, r, fmt.Sprintf("cannot create manifest: %s", err), http.StatusInternalServerError)
RespondError(w, r, fmt.Sprintf("cannot create manifest: %s", err), http.StatusInternalServerError)
return
}
log.Debug("stored content", "ruid", r.ruid, "key", newAddr)
log.Debug("stored content", "ruid", ruid, "key", newAddr)
w.Header().Set("Content-Type", "text/plain")
w.WriteHeader(http.StatusOK)
fmt.Fprint(w, newAddr)
}
func (s *Server) handleTarUpload(r *Request, mw *api.ManifestWriter) (storage.Address, error) {
log.Debug("handle.tar.upload", "ruid", r.ruid)
func (s *Server) handleTarUpload(r *http.Request, mw *api.ManifestWriter) (storage.Address, error) {
log.Debug("handle.tar.upload", "ruid", GetRUID(r.Context()))
key, err := s.api.UploadTar(r.Context(), r.Body, r.uri.Path, mw)
key, err := s.api.UploadTar(r.Context(), r.Body, GetURI(r.Context()).Path, mw)
if err != nil {
return nil, err
}
return key, nil
}
func (s *Server) handleMultipartUpload(req *Request, boundary string, mw *api.ManifestWriter) error {
log.Debug("handle.multipart.upload", "ruid", req.ruid)
mr := multipart.NewReader(req.Body, boundary)
func (s *Server) handleMultipartUpload(r *http.Request, boundary string, mw *api.ManifestWriter) error {
ruid := GetRUID(r.Context())
log.Debug("handle.multipart.upload", "ruid", ruid)
mr := multipart.NewReader(r.Body, boundary)
for {
part, err := mr.NextPart()
if err == io.EOF {
@ -435,48 +386,52 @@ func (s *Server) handleMultipartUpload(req *Request, boundary string, mw *api.Ma
if name == "" {
name = part.FormName()
}
path := path.Join(req.uri.Path, name)
uri := GetURI(r.Context())
path := path.Join(uri.Path, name)
entry := &api.ManifestEntry{
Path: path,
ContentType: part.Header.Get("Content-Type"),
Size: size,
ModTime: time.Now(),
}
log.Debug("adding path to new manifest", "ruid", req.ruid, "bytes", entry.Size, "path", entry.Path)
contentKey, err := mw.AddEntry(req.Context(), reader, entry)
log.Debug("adding path to new manifest", "ruid", ruid, "bytes", entry.Size, "path", entry.Path)
contentKey, err := mw.AddEntry(r.Context(), reader, entry)
if err != nil {
return fmt.Errorf("error adding manifest entry from multipart form: %s", err)
}
log.Debug("stored content", "ruid", req.ruid, "key", contentKey)
log.Debug("stored content", "ruid", ruid, "key", contentKey)
}
}
func (s *Server) handleDirectUpload(req *Request, mw *api.ManifestWriter) error {
log.Debug("handle.direct.upload", "ruid", req.ruid)
key, err := mw.AddEntry(req.Context(), req.Body, &api.ManifestEntry{
Path: req.uri.Path,
ContentType: req.Header.Get("Content-Type"),
func (s *Server) handleDirectUpload(r *http.Request, mw *api.ManifestWriter) error {
ruid := GetRUID(r.Context())
log.Debug("handle.direct.upload", "ruid", ruid)
key, err := mw.AddEntry(r.Context(), r.Body, &api.ManifestEntry{
Path: GetURI(r.Context()).Path,
ContentType: r.Header.Get("Content-Type"),
Mode: 0644,
Size: req.ContentLength,
Size: r.ContentLength,
ModTime: time.Now(),
})
if err != nil {
return err
}
log.Debug("stored content", "ruid", req.ruid, "key", key)
log.Debug("stored content", "ruid", ruid, "key", key)
return nil
}
// HandleDelete handles a DELETE request to bzz:/<manifest>/<path>, removes
// <path> from <manifest> and returns the resulting manifest hash as a
// text/plain response
func (s *Server) HandleDelete(w http.ResponseWriter, r *Request) {
log.Debug("handle.delete", "ruid", r.ruid)
func (s *Server) HandleDelete(w http.ResponseWriter, r *http.Request) {
ruid := GetRUID(r.Context())
uri := GetURI(r.Context())
log.Debug("handle.delete", "ruid", ruid)
deleteCount.Inc(1)
newKey, err := s.api.Delete(r.Context(), r.uri.Addr, r.uri.Path)
newKey, err := s.api.Delete(r.Context(), uri.Addr, uri.Path)
if err != nil {
deleteFail.Inc(1)
Respond(w, r, fmt.Sprintf("could not delete from manifest: %v", err), http.StatusInternalServerError)
RespondError(w, r, fmt.Sprintf("could not delete from manifest: %v", err), http.StatusInternalServerError)
return
}
@ -519,27 +474,20 @@ func resourcePostMode(path string) (isRaw bool, frequency uint64, err error) {
//
// The POST request admits a JSON structure as defined in the mru package: `mru.updateRequestJSON`
// The requests can be to a) create a resource, b) update a resource or c) both a+b: create a resource and set the initial content
func (s *Server) HandlePostResource(w http.ResponseWriter, r *Request) {
log.Debug("handle.post.resource", "ruid", r.ruid)
var sp opentracing.Span
ctx := r.Context()
ctx, sp = spancontext.StartSpan(
ctx,
"http.post.resource")
defer sp.Finish()
func (s *Server) HandlePostResource(w http.ResponseWriter, r *http.Request) {
ruid := GetRUID(r.Context())
log.Debug("handle.post.resource", "ruid", ruid)
var err error
// Creation and update must send mru.updateRequestJSON JSON structure
body, err := ioutil.ReadAll(r.Body)
if err != nil {
Respond(w, r, err.Error(), http.StatusInternalServerError)
RespondError(w, r, err.Error(), http.StatusInternalServerError)
return
}
var updateRequest mru.Request
if err := updateRequest.UnmarshalJSON(body); err != nil { // decodes request JSON
Respond(w, r, err.Error(), http.StatusBadRequest) //TODO: send different status response depending on error
RespondError(w, r, err.Error(), http.StatusBadRequest) //TODO: send different status response depending on error
return
}
@ -548,7 +496,7 @@ func (s *Server) HandlePostResource(w http.ResponseWriter, r *Request) {
// to update this resource
// Check this early, to avoid creating a resource and then not being able to set its first update.
if err = updateRequest.Verify(); err != nil {
Respond(w, r, err.Error(), http.StatusForbidden)
RespondError(w, r, err.Error(), http.StatusForbidden)
return
}
}
@ -557,7 +505,7 @@ func (s *Server) HandlePostResource(w http.ResponseWriter, r *Request) {
err = s.api.ResourceCreate(r.Context(), &updateRequest)
if err != nil {
code, err2 := s.translateResourceError(w, r, "resource creation fail", err)
Respond(w, r, err2.Error(), code)
RespondError(w, r, err2.Error(), code)
return
}
}
@ -565,7 +513,7 @@ func (s *Server) HandlePostResource(w http.ResponseWriter, r *Request) {
if updateRequest.IsUpdate() {
_, err = s.api.ResourceUpdate(r.Context(), &updateRequest.SignedResourceUpdate)
if err != nil {
Respond(w, r, err.Error(), http.StatusInternalServerError)
RespondError(w, r, err.Error(), http.StatusInternalServerError)
return
}
}
@ -579,7 +527,7 @@ func (s *Server) HandlePostResource(w http.ResponseWriter, r *Request) {
// metadata chunk (rootAddr)
m, err := s.api.NewResourceManifest(r.Context(), updateRequest.RootAddr().Hex())
if err != nil {
Respond(w, r, fmt.Sprintf("failed to create resource manifest: %v", err), http.StatusInternalServerError)
RespondError(w, r, fmt.Sprintf("failed to create resource manifest: %v", err), http.StatusInternalServerError)
return
}
@ -589,7 +537,7 @@ func (s *Server) HandlePostResource(w http.ResponseWriter, r *Request) {
// \TODO update manifest key automatically in ENS
outdata, err := json.Marshal(m)
if err != nil {
Respond(w, r, fmt.Sprintf("failed to create json response: %s", err), http.StatusInternalServerError)
RespondError(w, r, fmt.Sprintf("failed to create json response: %s", err), http.StatusInternalServerError)
return
}
fmt.Fprint(w, string(outdata))
@ -604,17 +552,19 @@ func (s *Server) HandlePostResource(w http.ResponseWriter, r *Request) {
// bzz-resource://<id>/meta - get metadata and next version information
// <id> = ens name or hash
// TODO: Enable pass maxPeriod parameter
func (s *Server) HandleGetResource(w http.ResponseWriter, r *Request) {
log.Debug("handle.get.resource", "ruid", r.ruid)
func (s *Server) HandleGetResource(w http.ResponseWriter, r *http.Request) {
ruid := GetRUID(r.Context())
uri := GetURI(r.Context())
log.Debug("handle.get.resource", "ruid", ruid)
var err error
// resolve the content key.
manifestAddr := r.uri.Address()
manifestAddr := uri.Address()
if manifestAddr == nil {
manifestAddr, err = s.api.Resolve(r.Context(), r.uri)
manifestAddr, err = s.api.Resolve(r.Context(), uri)
if err != nil {
getFail.Inc(1)
Respond(w, r, fmt.Sprintf("cannot resolve %s: %s", r.uri.Addr, err), http.StatusNotFound)
RespondError(w, r, fmt.Sprintf("cannot resolve %s: %s", uri.Addr, err), http.StatusNotFound)
return
}
} else {
@ -625,25 +575,25 @@ func (s *Server) HandleGetResource(w http.ResponseWriter, r *Request) {
rootAddr, err := s.api.ResolveResourceManifest(r.Context(), manifestAddr)
if err != nil {
getFail.Inc(1)
Respond(w, r, fmt.Sprintf("error resolving resource root chunk for %s: %s", r.uri.Addr, err), http.StatusNotFound)
RespondError(w, r, fmt.Sprintf("error resolving resource root chunk for %s: %s", uri.Addr, err), http.StatusNotFound)
return
}
log.Debug("handle.get.resource: resolved", "ruid", r.ruid, "manifestkey", manifestAddr, "rootchunk addr", rootAddr)
log.Debug("handle.get.resource: resolved", "ruid", ruid, "manifestkey", manifestAddr, "rootchunk addr", rootAddr)
// determine if the query specifies period and version or it is a metadata query
var params []string
if len(r.uri.Path) > 0 {
if r.uri.Path == "meta" {
if len(uri.Path) > 0 {
if uri.Path == "meta" {
unsignedUpdateRequest, err := s.api.ResourceNewRequest(r.Context(), rootAddr)
if err != nil {
getFail.Inc(1)
Respond(w, r, fmt.Sprintf("cannot retrieve resource metadata for rootAddr=%s: %s", rootAddr.Hex(), err), http.StatusNotFound)
RespondError(w, r, fmt.Sprintf("cannot retrieve resource metadata for rootAddr=%s: %s", rootAddr.Hex(), err), http.StatusNotFound)
return
}
rawResponse, err := unsignedUpdateRequest.MarshalJSON()
if err != nil {
Respond(w, r, fmt.Sprintf("cannot encode unsigned UpdateRequest: %v", err), http.StatusInternalServerError)
RespondError(w, r, fmt.Sprintf("cannot encode unsigned UpdateRequest: %v", err), http.StatusInternalServerError)
return
}
w.Header().Add("Content-type", "application/json")
@ -653,7 +603,7 @@ func (s *Server) HandleGetResource(w http.ResponseWriter, r *Request) {
}
params = strings.Split(r.uri.Path, "/")
params = strings.Split(uri.Path, "/")
}
var name string
@ -689,17 +639,17 @@ func (s *Server) HandleGetResource(w http.ResponseWriter, r *Request) {
// any error from the switch statement will end up here
if err != nil {
code, err2 := s.translateResourceError(w, r, "mutable resource lookup fail", err)
Respond(w, r, err2.Error(), code)
RespondError(w, r, err2.Error(), code)
return
}
// All ok, serve the retrieved update
log.Debug("Found update", "name", name, "ruid", r.ruid)
log.Debug("Found update", "name", name, "ruid", ruid)
w.Header().Set("Content-Type", "application/octet-stream")
http.ServeContent(w, &r.Request, "", now, bytes.NewReader(data))
http.ServeContent(w, r, "", now, bytes.NewReader(data))
}
func (s *Server) translateResourceError(w http.ResponseWriter, r *Request, supErr string, err error) (int, error) {
func (s *Server) translateResourceError(w http.ResponseWriter, r *http.Request, supErr string, err error) (int, error) {
code := 0
defaultErr := fmt.Errorf("%s: %v", supErr, err)
rsrcErr, ok := err.(*mru.Error)
@ -725,46 +675,41 @@ func (s *Server) translateResourceError(w http.ResponseWriter, r *Request, supEr
// given storage key
// - bzz-hash://<key> and responds with the hash of the content stored
// at the given storage key as a text/plain response
func (s *Server) HandleGet(w http.ResponseWriter, r *Request) {
log.Debug("handle.get", "ruid", r.ruid, "uri", r.uri)
func (s *Server) HandleGet(w http.ResponseWriter, r *http.Request) {
ruid := GetRUID(r.Context())
uri := GetURI(r.Context())
log.Debug("handle.get", "ruid", ruid, "uri", uri)
getCount.Inc(1)
var sp opentracing.Span
ctx := r.Context()
ctx, sp = spancontext.StartSpan(
ctx,
"http.get")
defer sp.Finish()
var err error
addr := r.uri.Address()
addr := uri.Address()
if addr == nil {
addr, err = s.api.Resolve(r.Context(), r.uri)
addr, err = s.api.Resolve(r.Context(), uri)
if err != nil {
getFail.Inc(1)
Respond(w, r, fmt.Sprintf("cannot resolve %s: %s", r.uri.Addr, err), http.StatusNotFound)
RespondError(w, r, fmt.Sprintf("cannot resolve %s: %s", uri.Addr, err), http.StatusNotFound)
return
}
} else {
w.Header().Set("Cache-Control", "max-age=2147483648, immutable") // url was of type bzz://<hex key>/path, so we are sure it is immutable.
}
log.Debug("handle.get: resolved", "ruid", r.ruid, "key", addr)
log.Debug("handle.get: resolved", "ruid", ruid, "key", addr)
// if path is set, interpret <key> as a manifest and return the
// raw entry at the given path
if r.uri.Path != "" {
if uri.Path != "" {
walker, err := s.api.NewManifestWalker(r.Context(), addr, nil)
if err != nil {
getFail.Inc(1)
Respond(w, r, fmt.Sprintf("%s is not a manifest", addr), http.StatusBadRequest)
RespondError(w, r, fmt.Sprintf("%s is not a manifest", addr), http.StatusBadRequest)
return
}
var entry *api.ManifestEntry
walker.Walk(func(e *api.ManifestEntry) error {
// if the entry matches the path, set entry and stop
// the walk
if e.Path == r.uri.Path {
if e.Path == uri.Path {
entry = e
// return an error to cancel the walk
return errors.New("found")
@ -778,7 +723,7 @@ func (s *Server) HandleGet(w http.ResponseWriter, r *Request) {
// if the manifest's path is a prefix of the
// requested path, recurse into it by returning
// nil and continuing the walk
if strings.HasPrefix(r.uri.Path, e.Path) {
if strings.HasPrefix(uri.Path, e.Path) {
return nil
}
@ -786,7 +731,7 @@ func (s *Server) HandleGet(w http.ResponseWriter, r *Request) {
})
if entry == nil {
getFail.Inc(1)
Respond(w, r, fmt.Sprintf("manifest entry could not be loaded"), http.StatusNotFound)
RespondError(w, r, fmt.Sprintf("manifest entry could not be loaded"), http.StatusNotFound)
return
}
addr = storage.Address(common.Hex2Bytes(entry.Hash))
@ -796,23 +741,23 @@ func (s *Server) HandleGet(w http.ResponseWriter, r *Request) {
w.Header().Set("ETag", fmt.Sprintf("%q", etag)) // set etag to manifest key or raw entry key.
if noneMatchEtag != "" {
if bytes.Equal(storage.Address(common.Hex2Bytes(noneMatchEtag)), addr) {
Respond(w, r, "Not Modified", http.StatusNotModified)
w.WriteHeader(http.StatusNotModified)
return
}
}
// check the root chunk exists by retrieving the file's size
reader, isEncrypted := s.api.Retrieve(ctx, addr)
if _, err := reader.Size(ctx, nil); err != nil {
reader, isEncrypted := s.api.Retrieve(r.Context(), addr)
if _, err := reader.Size(r.Context(), nil); err != nil {
getFail.Inc(1)
Respond(w, r, fmt.Sprintf("root chunk not found %s: %s", addr, err), http.StatusNotFound)
RespondError(w, r, fmt.Sprintf("root chunk not found %s: %s", addr, err), http.StatusNotFound)
return
}
w.Header().Set("X-Decrypted", fmt.Sprintf("%v", isEncrypted))
switch {
case r.uri.Raw():
case uri.Raw():
// allow the request to overwrite the content type using a query
// parameter
contentType := "application/octet-stream"
@ -820,8 +765,8 @@ func (s *Server) HandleGet(w http.ResponseWriter, r *Request) {
contentType = typ
}
w.Header().Set("Content-Type", contentType)
http.ServeContent(w, &r.Request, "", time.Now(), reader)
case r.uri.Hash():
http.ServeContent(w, r, "", time.Now(), reader)
case uri.Hash():
w.Header().Set("Content-Type", "text/plain")
w.WriteHeader(http.StatusOK)
fmt.Fprint(w, addr)
@ -831,35 +776,30 @@ func (s *Server) HandleGet(w http.ResponseWriter, r *Request) {
// HandleGetList handles a GET request to bzz-list:/<manifest>/<path> and returns
// a list of all files contained in <manifest> under <path> grouped into
// common prefixes using "/" as a delimiter
func (s *Server) HandleGetList(w http.ResponseWriter, r *Request) {
log.Debug("handle.get.list", "ruid", r.ruid, "uri", r.uri)
func (s *Server) HandleGetList(w http.ResponseWriter, r *http.Request) {
ruid := GetRUID(r.Context())
uri := GetURI(r.Context())
log.Debug("handle.get.list", "ruid", ruid, "uri", uri)
getListCount.Inc(1)
var sp opentracing.Span
ctx := r.Context()
ctx, sp = spancontext.StartSpan(
ctx,
"http.get.list")
defer sp.Finish()
// ensure the root path has a trailing slash so that relative URLs work
if r.uri.Path == "" && !strings.HasSuffix(r.URL.Path, "/") {
http.Redirect(w, &r.Request, r.URL.Path+"/", http.StatusMovedPermanently)
if uri.Path == "" && !strings.HasSuffix(r.URL.Path, "/") {
http.Redirect(w, r, r.URL.Path+"/", http.StatusMovedPermanently)
return
}
addr, err := s.api.Resolve(r.Context(), r.uri)
addr, err := s.api.Resolve(r.Context(), uri)
if err != nil {
getListFail.Inc(1)
Respond(w, r, fmt.Sprintf("cannot resolve %s: %s", r.uri.Addr, err), http.StatusNotFound)
RespondError(w, r, fmt.Sprintf("cannot resolve %s: %s", uri.Addr, err), http.StatusNotFound)
return
}
log.Debug("handle.get.list: resolved", "ruid", r.ruid, "key", addr)
log.Debug("handle.get.list: resolved", "ruid", ruid, "key", addr)
list, err := s.api.GetManifestList(ctx, addr, r.uri.Path)
list, err := s.api.GetManifestList(r.Context(), addr, uri.Path)
if err != nil {
getListFail.Inc(1)
Respond(w, r, err.Error(), http.StatusInternalServerError)
RespondError(w, r, err.Error(), http.StatusInternalServerError)
return
}
@ -867,11 +807,11 @@ func (s *Server) HandleGetList(w http.ResponseWriter, r *Request) {
// HTML index with relative URLs
if strings.Contains(r.Header.Get("Accept"), "text/html") {
w.Header().Set("Content-Type", "text/html")
err := htmlListTemplate.Execute(w, &htmlListData{
err := TemplatesMap["bzz-list"].Execute(w, &htmlListData{
URI: &api.URI{
Scheme: "bzz",
Addr: r.uri.Addr,
Path: r.uri.Path,
Addr: uri.Addr,
Path: uri.Path,
},
List: &list,
})
@ -888,45 +828,40 @@ func (s *Server) HandleGetList(w http.ResponseWriter, r *Request) {
// HandleGetFile handles a GET request to bzz://<manifest>/<path> and responds
// with the content of the file at <path> from the given <manifest>
func (s *Server) HandleGetFile(w http.ResponseWriter, r *Request) {
log.Debug("handle.get.file", "ruid", r.ruid)
func (s *Server) HandleGetFile(w http.ResponseWriter, r *http.Request) {
ruid := GetRUID(r.Context())
uri := GetURI(r.Context())
log.Debug("handle.get.file", "ruid", ruid)
getFileCount.Inc(1)
var sp opentracing.Span
ctx := r.Context()
ctx, sp = spancontext.StartSpan(
ctx,
"http.get.file")
defer sp.Finish()
// ensure the root path has a trailing slash so that relative URLs work
if r.uri.Path == "" && !strings.HasSuffix(r.URL.Path, "/") {
http.Redirect(w, &r.Request, r.URL.Path+"/", http.StatusMovedPermanently)
if uri.Path == "" && !strings.HasSuffix(r.URL.Path, "/") {
http.Redirect(w, r, r.URL.Path+"/", http.StatusMovedPermanently)
return
}
var err error
manifestAddr := r.uri.Address()
manifestAddr := uri.Address()
if manifestAddr == nil {
manifestAddr, err = s.api.Resolve(r.Context(), r.uri)
manifestAddr, err = s.api.Resolve(r.Context(), uri)
if err != nil {
getFileFail.Inc(1)
Respond(w, r, fmt.Sprintf("cannot resolve %s: %s", r.uri.Addr, err), http.StatusNotFound)
RespondError(w, r, fmt.Sprintf("cannot resolve %s: %s", uri.Addr, err), http.StatusNotFound)
return
}
} else {
w.Header().Set("Cache-Control", "max-age=2147483648, immutable") // url was of type bzz://<hex key>/path, so we are sure it is immutable.
}
log.Debug("handle.get.file: resolved", "ruid", r.ruid, "key", manifestAddr)
reader, contentType, status, contentKey, err := s.api.Get(r.Context(), manifestAddr, r.uri.Path)
log.Debug("handle.get.file: resolved", "ruid", ruid, "key", manifestAddr)
reader, contentType, status, contentKey, err := s.api.Get(r.Context(), manifestAddr, uri.Path)
etag := common.Bytes2Hex(contentKey)
noneMatchEtag := r.Header.Get("If-None-Match")
w.Header().Set("ETag", fmt.Sprintf("%q", etag)) // set etag to actual content key.
if noneMatchEtag != "" {
if bytes.Equal(storage.Address(common.Hex2Bytes(noneMatchEtag)), contentKey) {
Respond(w, r, "Not Modified", http.StatusNotModified)
w.WriteHeader(http.StatusNotModified)
return
}
}
@ -935,10 +870,10 @@ func (s *Server) HandleGetFile(w http.ResponseWriter, r *Request) {
switch status {
case http.StatusNotFound:
getFileNotFound.Inc(1)
Respond(w, r, err.Error(), http.StatusNotFound)
RespondError(w, r, err.Error(), http.StatusNotFound)
default:
getFileFail.Inc(1)
Respond(w, r, err.Error(), http.StatusInternalServerError)
RespondError(w, r, err.Error(), http.StatusInternalServerError)
}
return
}
@ -946,28 +881,28 @@ func (s *Server) HandleGetFile(w http.ResponseWriter, r *Request) {
//the request results in ambiguous files
//e.g. /read with readme.md and readinglist.txt available in manifest
if status == http.StatusMultipleChoices {
list, err := s.api.GetManifestList(ctx, manifestAddr, r.uri.Path)
list, err := s.api.GetManifestList(r.Context(), manifestAddr, uri.Path)
if err != nil {
getFileFail.Inc(1)
Respond(w, r, err.Error(), http.StatusInternalServerError)
RespondError(w, r, err.Error(), http.StatusInternalServerError)
return
}
log.Debug(fmt.Sprintf("Multiple choices! --> %v", list), "ruid", r.ruid)
log.Debug(fmt.Sprintf("Multiple choices! --> %v", list), "ruid", ruid)
//show a nice page links to available entries
ShowMultipleChoices(w, r, list)
return
}
// check the root chunk exists by retrieving the file's size
if _, err := reader.Size(ctx, nil); err != nil {
if _, err := reader.Size(r.Context(), nil); err != nil {
getFileNotFound.Inc(1)
Respond(w, r, fmt.Sprintf("file not found %s: %s", r.uri, err), http.StatusNotFound)
RespondError(w, r, fmt.Sprintf("file not found %s: %s", uri, err), http.StatusNotFound)
return
}
w.Header().Set("Content-Type", contentType)
http.ServeContent(w, &r.Request, "", time.Now(), newBufferedReadSeeker(reader, getFileBufferSize))
http.ServeContent(w, r, "", time.Now(), newBufferedReadSeeker(reader, getFileBufferSize))
}
// The size of buffer used for bufio.Reader on LazyChunkReader passed to

68
swarm/api/http/server_test.go
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432
swarm/api/http/templates.go
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7
swarm/sctx/sctx.go Normal file
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@ -0,0 +1,7 @@
package sctx
type ContextKey int
const (
HTTPRequestIDKey ContextKey = iota
)