From 9b20c0ec159bf3a74621a4208d3bbe79c6372c1a Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Tue, 16 May 2017 02:19:14 +0200
Subject: first test with multiple append workers

---
 src/hub/src/spreadspace.org/sfive/s5srv.go | 44 ++++++++++++++++--------------
 1 file changed, 24 insertions(+), 20 deletions(-)

(limited to 'src')

diff --git a/src/hub/src/spreadspace.org/sfive/s5srv.go b/src/hub/src/spreadspace.org/sfive/s5srv.go
index 7690e11..1df4f07 100644
--- a/src/hub/src/spreadspace.org/sfive/s5srv.go
+++ b/src/hub/src/spreadspace.org/sfive/s5srv.go
@@ -34,6 +34,7 @@ package sfive
 
 import (
 	"errors"
+	"sync"
 )
 
 type appendToken struct {
@@ -50,7 +51,7 @@ type Server struct {
 	store          Store
 	anonymization  AnonymizationAlgo
 	quit           chan bool
-	done           chan bool
+	done           sync.WaitGroup
 	appendChan     chan appendToken
 	appendManyChan chan appendManyToken
 }
@@ -78,8 +79,7 @@ func (srv Server) AnonymizeMany(updates []UpdateFull) []UpdateFull {
 	return anonymized
 }
 
-func (srv Server) appendActor() {
-	defer func() { srv.done <- true }()
+func (srv Server) appendWorker() {
 	for {
 		select {
 		case <-srv.quit:
@@ -113,38 +113,42 @@ func (srv Server) AppendMany(updates []UpdateFull) error {
 }
 
 func (srv Server) Close() {
-	s5l.Printf("server: shutting down\n")
-	srv.quit <- true
-	<-srv.done
+	s5l.Printf("server: shutting down")
 	close(srv.quit)
-	close(srv.done)
+	srv.done.Wait()
 	close(srv.appendChan)
 	close(srv.appendManyChan)
 	srv.store.Close()
-	s5l.Printf("server: finished\n")
+	s5l.Printf("server: finished")
 }
 
-func NewServer(dbPath string, readOnly, anonymize bool, anonKeyfile string) (server *Server, err error) {
+func NewServer(dbPath string, readOnly, anonymize bool, anonKeyfile string) (srv *Server, err error) {
 	// TODO read configuration and create instance with correct settings
-	server = &Server{}
-	server.store, err = NewStore(dbPath, readOnly)
-	if err != nil {
+	srv = &Server{}
+	if srv.store, err = NewStore(dbPath, readOnly); err != nil {
 		return
 	}
 
 	if anonymize {
-		if server.anonymization, err = NewCryptopanAnonymization(anonKeyfile); err != nil {
+		if srv.anonymization, err = NewCryptopanAnonymization(anonKeyfile); err != nil {
 			err = errors.New("failed to initialize IP address anonymization: " + err.Error())
 			return
 		}
-		s5l.Printf("using IP address anonymization: %s", server.anonymization)
+		s5l.Printf("using IP address anonymization: %s", srv.anonymization)
 	}
 
-	server.quit = make(chan bool)
-	server.done = make(chan bool)
-	server.appendChan = make(chan appendToken, 32)
-	server.appendManyChan = make(chan appendManyToken, 32)
-	go server.appendActor()
-	s5l.Printf("server: started\n")
+	srv.quit = make(chan bool)
+	srv.appendChan = make(chan appendToken, 32)
+	srv.appendManyChan = make(chan appendManyToken, 32)
+	for i := 0; i < 8; i = i + 1 {
+		srv.done.Add(1)
+		go func(idx int) {
+			defer srv.done.Done()
+			s5l.Printf("server: worker %d started", idx)
+			srv.appendWorker()
+			s5l.Printf("server: worker %d stopped", idx)
+		}(i)
+	}
+	s5l.Printf("server: started")
 	return
 }
-- 
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