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all_channels.go
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/
all_channels.go
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// Copyright (c) 2015 Uber Technologies, Inc.
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package tchannel
import (
"fmt"
"sync"
)
// channelMap is used to ensure that applications don't create multiple channels with
// the same service name in a single process.
var channelMap = struct {
sync.Mutex
existing map[string][]*Channel
}{
existing: make(map[string][]*Channel),
}
func registerNewChannel(ch *Channel) {
serviceName := ch.ServiceName()
ch.createdStack = string(getStacks(false /* all */))
ch.log.WithFields(
LogField{"channelPtr", fmt.Sprintf("%p", ch)},
LogField{"createdStack", ch.createdStack},
).Info("Created new channel.")
channelMap.Lock()
defer channelMap.Unlock()
existing := channelMap.existing[serviceName]
channelMap.existing[serviceName] = append(existing, ch)
}
func removeClosedChannel(ch *Channel) {
channelMap.Lock()
defer channelMap.Unlock()
channels := channelMap.existing[ch.ServiceName()]
for i, v := range channels {
if v != ch {
continue
}
// Replace current index with the last element, and truncate channels.
channels[i] = channels[len(channels)-1]
channels = channels[:len(channels)-1]
break
}
channelMap.existing[ch.ServiceName()] = channels
}
func findChannelByID(id uint32) (*Channel, bool) {
channelMap.Lock()
defer channelMap.Unlock()
for _, channels := range channelMap.existing {
for _, ch := range channels {
if ch.chID == id {
return ch, true
}
}
}
return nil, false
}