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main.go
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main.go
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package main
import (
"fmt"
"log"
"net"
"net/http"
"os"
)
type stCached struct {
hs *httpServer
opts *options
log *log.Logger
cm *cacheManager
raft *raftNodeInfo
}
type stCachedContext struct {
st *stCached
}
func main() {
st := &stCached{
opts: NewOptions(),
log: log.New(os.Stderr, "stCached: ", log.Ldate|log.Ltime),
cm: NewCacheManager(),
}
ctx := &stCachedContext{st}
var l net.Listener
var err error
l, err = net.Listen("tcp", st.opts.httpAddress)
if err != nil {
st.log.Fatal(fmt.Sprintf("listen %s failed: %s", st.opts.httpAddress, err))
}
st.log.Printf("http server listen:%s", l.Addr())
logger := log.New(os.Stderr, "httpserver: ", log.Ldate|log.Ltime)
httpServer := NewHttpServer(ctx, logger)
st.hs = httpServer
go func() {
http.Serve(l, httpServer.mux)
}()
raft, err := newRaftNode(st.opts, ctx)
if err != nil {
st.log.Fatal(fmt.Sprintf("new raft node failed:%v", err))
}
st.raft = raft
if st.opts.joinAddress != "" {
err = joinRaftCluster(st.opts)
if err != nil {
st.log.Fatal(fmt.Sprintf("join raft cluster failed:%v", err))
}
}
// monitor leadership
for {
select {
case leader := <-st.raft.leaderNotifyCh:
if leader {
st.log.Println("become leader, enable write api")
st.hs.setWriteFlag(true)
} else {
st.log.Println("become follower, close write api")
st.hs.setWriteFlag(false)
}
}
}
}