forked from couchbase/cbgt
/
rest_log.go
65 lines (58 loc) · 1.6 KB
/
rest_log.go
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// Copyright (c) 2014 Couchbase, Inc.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the
// License. You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an "AS
// IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
// express or implied. See the License for the specific language
// governing permissions and limitations under the License.
package rest
import (
"encoding/json"
"net/http"
"github.com/couchbase/cbgt"
)
// TODO: Need to give the codebase a scrub of its log
// messages and fmt.Errorf()'s.
// LogGetHandler is a REST handler that retrieves recent log messages.
type LogGetHandler struct {
mgr *cbgt.Manager
mr *cbgt.MsgRing
}
func NewLogGetHandler(
mgr *cbgt.Manager, mr *cbgt.MsgRing) *LogGetHandler {
return &LogGetHandler{mgr: mgr, mr: mr}
}
func (h *LogGetHandler) ServeHTTP(
w http.ResponseWriter, req *http.Request) {
w.Write([]byte(`{"messages":[`))
if h.mr != nil {
for i, message := range h.mr.Messages() {
buf, err := json.Marshal(string(message))
if err == nil {
if i > 0 {
w.Write(cbgt.JsonComma)
}
w.Write(buf)
}
}
}
w.Write([]byte(`],"events":[`))
if h.mgr != nil {
first := true
h.mgr.Lock()
p := h.mgr.Events().Front()
for p != nil {
if !first {
w.Write(cbgt.JsonComma)
}
first = false
w.Write(p.Value.([]byte))
p = p.Next()
}
h.mgr.Unlock()
}
w.Write([]byte(`]}`))
}