go语言nsq源码解读九 tcp和http中channel、topic的增删

通过前面多篇文章，nsqlookupd基本已经解读完毕了，不过在关于channel和topic的增删上还比较模糊，所以本篇将站在宏观的角度来总结一下，tcp.go和http.go两个文件中关于channel和topic的操作有哪些。

总结如下表：

模块	文件	所在方法名	调用方法	Registration
				Category	Key	SubKey
TCP	lookup_protocol_v1.go	REGISTER	AddProducer	“channel”	topic	channel
			AddProducer	“topic”	topic	“”
		UNREGISTER	RemoveProducer	“channel”	topic	channel
			RemoveProducer	“channel”	topic	“*”
			RemoveProducer	“topic”	topic	“”
		IDENTIFY	AddProducer	“client”	“”	“”
HTTP	http.go	topicsHandler	FindRegistrations	“topic”	“*”	“”
		channelsHandler	FindRegistrations	“channel”	topicName	“*”
		lookupHandler	FindRegistrations	“channel”	topicName	“*”
			FindRegistrations	“topic”	topicName	“”
		createTopicHandler	AddRegistration	“topic”	topicName	“”
		deleteTopicHandler	RemoveRegistration	“channel”	topicName	“*”
			RemoveRegistration	“topic”	topicName	“”
		tombstoneTopicProducerHandler	FindProducers	“topic”	topicName	“”
		createChannelHandler	AddRegistration	“channel”	topicName	channelName
			AddRegistration	“topic”	topicName	“”
		deleteChannelHandler	RemoveRegistration	“channel”	topicName	channelName
		nodesHandler	FindProducers	“client”	“”	“”
			LookupRegistrations	“topic”	“*”	“”
			FindProducers	“topic”	t	“”