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server.go
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server.go
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/*
* Copyright (C) 2016 Red Hat, Inc.
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 flow
import (
"encoding/json"
shttp "github.com/skydive-project/skydive/http"
"github.com/skydive-project/skydive/logging"
)
const (
Namespace = "Flow"
)
type TableServer struct {
shttp.DefaultWSClientEventHandler
WSAsyncClient *shttp.WSAsyncClient
TableAllocator *TableAllocator
}
func (s *TableServer) OnMessage(msg shttp.WSMessage) {
if msg.Namespace != Namespace {
return
}
var query TableQuery
// decode query obj depending on the msg type
switch msg.Type {
case "FlowSearchQuery":
query.Obj = &FlowSearchQuery{}
err := json.Unmarshal([]byte(*msg.Obj), &query)
if err != nil {
logging.GetLogger().Errorf("Unable to decode search flow message %v", msg)
return
}
}
b, _ := json.Marshal(s.TableAllocator.QueryTable(&query))
raw := json.RawMessage(b)
reply := shttp.WSMessage{
Namespace: Namespace,
Type: msg.Type,
UUID: msg.UUID,
Obj: &raw,
}
s.WSAsyncClient.SendWSMessage(reply)
}
func NewServer(allocator *TableAllocator, client *shttp.WSAsyncClient) *TableServer {
s := &TableServer{
TableAllocator: allocator,
WSAsyncClient: client,
}
client.AddEventHandler(s)
return s
}