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handler_node_info.go
160 lines (128 loc) · 3.53 KB
/
handler_node_info.go
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package digest
import (
"context"
isaacnetwork "github.com/ProtoconNet/mitum2/isaac/network"
"github.com/ProtoconNet/mitum2/network/quicmemberlist"
"github.com/ProtoconNet/mitum2/network/quicstream"
quicstreamheader "github.com/ProtoconNet/mitum2/network/quicstream/header"
"github.com/ProtoconNet/mitum2/util"
"github.com/ProtoconNet/mitum2/util/encoder"
"github.com/pkg/errors"
"net/http"
"time"
)
func (hd *Handlers) SetNodeInfoHandler(handler NodeInfoHandler) *Handlers {
hd.nodeInfoHandler = handler
return hd
}
func (hd *Handlers) handleNodeInfo(w http.ResponseWriter, r *http.Request) {
//if hd.nodeInfoHandler == nil {
// HTTP2NotSupported(w, nil)
//
// return
//}
cachekey := CacheKeyPath(r)
if err := LoadFromCache(hd.cache, cachekey, w); err == nil {
return
}
if v, err, shared := hd.rg.Do(cachekey, hd.handleNodeInfoInGroup); err != nil {
hd.Log().Err(err).Msg("get node info")
HTTP2HandleError(w, err)
} else {
HTTP2WriteHalBytes(hd.enc, w, v.([]byte), http.StatusOK)
if !shared {
HTTP2WriteCache(w, cachekey, time.Second*3)
}
}
}
func (hd *Handlers) handleNodeInfoInGroup() (interface{}, error) {
client, memberList, nodeList, err := hd.client()
var nodeInfoList []isaacnetwork.NodeInfo
switch {
case err != nil:
return nil, err
default:
connInfo := make(map[string]quicstream.ConnInfo)
memberList.Members(func(node quicmemberlist.Member) bool {
connInfo[node.ConnInfo().String()] = node.ConnInfo()
return true
})
for _, c := range nodeList {
connInfo[c.String()] = c
}
for i := range connInfo {
nodeInfo, err := NodeInfo(client, connInfo[i])
if err != nil {
return nil, util.ErrFound.Wrap(err)
}
nodeInfoList = append(nodeInfoList, *nodeInfo)
}
}
if i, err := hd.buildNodeInfoHal(nodeInfoList); err != nil {
return nil, err
} else {
return hd.enc.Marshal(i)
}
}
func (hd *Handlers) buildNodeInfoHal(ni []isaacnetwork.NodeInfo) (Hal, error) {
var hal Hal = NewBaseHal(ni, NewHalLink(HandlerPathNodeInfo, nil))
return hal, nil
}
func NodeInfo(client *isaacnetwork.BaseClient, connInfo quicstream.ConnInfo) (*isaacnetwork.NodeInfo, error) {
ctx, cancel := context.WithTimeout(context.Background(), time.Second*9)
defer cancel()
stream, _, err := client.Dial(ctx, connInfo)
if err != nil {
return nil, err
}
defer func() {
_ = client.Close()
}()
header := isaacnetwork.NewNodeInfoRequestHeader()
var nodeInfo *isaacnetwork.NodeInfo
err = stream(ctx, func(ctx context.Context, broker *quicstreamheader.ClientBroker) error {
if err := broker.WriteRequestHead(ctx, header); err != nil {
return err
}
var enc encoder.Encoder
switch rEnc, rh, err := broker.ReadResponseHead(ctx); {
case err != nil:
return err
case !rh.OK():
return errors.Errorf("Not ok")
case rh.Err() != nil:
return rh.Err()
default:
enc = rEnc
}
switch bodyType, bodyLength, r, err := broker.ReadBodyErr(ctx); {
case err != nil:
return err
case bodyType == quicstreamheader.EmptyBodyType,
bodyType == quicstreamheader.FixedLengthBodyType && bodyLength < 1:
return errors.Errorf("Empty body")
default:
var v interface{}
if err := enc.StreamDecoder(r).Decode(&v); err != nil {
return err
}
b, err := enc.Marshal(v)
if err != nil {
return err
}
h, err := enc.Decode(b)
if err != nil {
}
ni, ok := h.(isaacnetwork.NodeInfo)
if !ok {
return errors.Errorf("expected isaacnetwork.NodeInfo, not %T", v)
}
nodeInfo = &ni
return nil
}
})
if err != nil {
return nil, err
}
return nodeInfo, nil
}