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Merge pull request #90 from tendermint/endpoints

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rpc endpoint / lists available endpoints
This commit is contained in:
ebuchman 2015-06-16 22:19:10 -04:00
commit ad70ce4067
1 changed files with 55 additions and 5 deletions
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60
rpc/server/handlers.go
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@ -5,15 +5,17 @@ import (
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"net/http"
"reflect"
"sort"
"sync/atomic"
"time"
"github.com/tendermint/tendermint/Godeps/_workspace/src/github.com/gorilla/websocket"
"github.com/tendermint/tendermint/binary"
"github.com/tendermint/tendermint/events"
. "github.com/tendermint/tendermint/rpc/types"
"io/ioutil"
"net/http"
"reflect"
"sync/atomic"
"time"
)
func RegisterRPCFuncs(mux *http.ServeMux, funcMap map[string]*RPCFunc) {
@ -87,6 +89,14 @@ func makeJSONRPCHandler(funcMap map[string]*RPCFunc) http.HandlerFunc {
return
}
b, _ := ioutil.ReadAll(r.Body)
// if its an empty request (like from a browser),
// just display a list of functions
if len(b) == 0 {
writeListOfEndpoints(w, r, funcMap)
return
}
var request RPCRequest
err := json.Unmarshal(b, &request)
if err != nil {
@ -393,3 +403,43 @@ func unreflectResponse(returns []reflect.Value) (interface{}, error) {
}
return returns[0].Interface(), nil
}
// writes a list of available rpc endpoints as an html page
func writeListOfEndpoints(w http.ResponseWriter, r *http.Request, funcMap map[string]*RPCFunc) {
noArgNames := []string{}
argNames := []string{}
for name, funcData := range funcMap {
if len(funcData.args) == 0 {
noArgNames = append(noArgNames, name)
} else {
argNames = append(argNames, name)
}
}
sort.Strings(noArgNames)
sort.Strings(argNames)
buf := new(bytes.Buffer)
buf.WriteString("<html><body>")
buf.WriteString("<br>Available endpoints:<br>")
for _, name := range noArgNames {
link := fmt.Sprintf("http://%s/%s", r.Host, name)
buf.WriteString(fmt.Sprintf("<a href=\"%s\">%s</a></br>", link, link))
}
buf.WriteString("<br>Endpoints that require arguments:<br>")
for _, name := range argNames {
link := fmt.Sprintf("http://%s/%s?", r.Host, name)
funcData := funcMap[name]
for i, argName := range funcData.argNames {
link += argName + "=_"
if i < len(funcData.argNames)-1 {
link += "&"
}
}
buf.WriteString(fmt.Sprintf("<a href=\"%s\">%s</a></br>", link, link))
}
buf.WriteString("</body></html>")
w.Header().Set("Content-Type", "text/html")
w.WriteHeader(200)
w.Write(buf.Bytes())
}