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swarm: network rewrite merge

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This commit is contained in:
ethersphere
2018-06-20 14:06:27 +02:00
parent 574378edb5
commit e187711c65
201 changed files with 39605 additions and 9921 deletions
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54
swarm/api/http/error.go
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@ -31,6 +31,7 @@ import (
"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
@ -44,7 +45,7 @@ var (
)
//parameters needed for formatting the correct HTML page
type ErrorParams struct {
type ResponseParams struct {
Msg string
Code int
Timestamp string
@ -113,45 +114,49 @@ func ValidateCaseErrors(r *Request) string {
//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 *Request, list api.ManifestList) {
func ShowMultipleChoices(w http.ResponseWriter, req *Request, list api.ManifestList) {
msg := ""
if list.Entries == nil {
ShowError(w, r, "Could not resolve", http.StatusInternalServerError)
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(r.RequestURI, "/")
idx := strings.LastIndex(req.RequestURI, "/")
if idx == -1 {
ShowError(w, r, "Internal Server Error", http.StatusInternalServerError)
Respond(w, req, "Internal Server Error", http.StatusInternalServerError)
return
}
//remove ambiguous part
base := r.RequestURI[:idx+1]
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, &r.Request, &ErrorParams{
Code: http.StatusMultipleChoices,
Details: template.HTML(msg),
Timestamp: time.Now().Format(time.RFC1123),
template: getTemplate(http.StatusMultipleChoices),
})
Respond(w, req, msg, http.StatusMultipleChoices)
}
//ShowError is used to show an HTML error page to a client.
//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 ShowError(w http.ResponseWriter, r *Request, msg string, code int) {
additionalMessage := ValidateCaseErrors(r)
if code == http.StatusInternalServerError {
log.Error(msg)
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)
default:
log.Output(msg, log.LvlDebug, l.CallDepth, "ruid", req.ruid, "code", code)
}
respond(w, &r.Request, &ErrorParams{
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),
@ -161,17 +166,17 @@ func ShowError(w http.ResponseWriter, r *Request, msg string, code int) {
}
//evaluate if client accepts html or json response
func respond(w http.ResponseWriter, r *http.Request, params *ErrorParams) {
func respond(w http.ResponseWriter, r *http.Request, params *ResponseParams) {
w.WriteHeader(params.Code)
if r.Header.Get("Accept") == "application/json" {
respondJson(w, params)
respondJSON(w, params)
} else {
respondHtml(w, params)
respondHTML(w, params)
}
}
//return a HTML page
func respondHtml(w http.ResponseWriter, params *ErrorParams) {
func respondHTML(w http.ResponseWriter, params *ResponseParams) {
htmlCounter.Inc(1)
err := params.template.Execute(w, params)
if err != nil {
@ -180,7 +185,7 @@ func respondHtml(w http.ResponseWriter, params *ErrorParams) {
}
//return JSON
func respondJson(w http.ResponseWriter, params *ErrorParams) {
func respondJSON(w http.ResponseWriter, params *ResponseParams) {
jsonCounter.Inc(1)
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(params)
@ -190,7 +195,6 @@ func respondJson(w http.ResponseWriter, params *ErrorParams) {
func getTemplate(code int) *template.Template {
if val, tmpl := templateMap[code]; tmpl {
return val
} else {
return templateMap[0]
}
return templateMap[0]
}