checkpoint before major refactoring

api.go

@@ -48,19 +48,19 @@ func (a *TootArchiverAPIServer) getRouter() *gin.Engine {
 	})
 
 	r.GET("/", func(c *gin.Context) {
+		ir := a.archiver.locator.instanceReport()
 		c.JSON(200, gin.H{
 			// FIXME(sneak) add more stuff here
 			"status": "ok",
 			"now":    time.Now().UTC().Format(time.RFC3339),
 			"uptime": a.archiver.Uptime().String(),
-			"instances": gin.H{
-				"total":      a.archiver.locator.instanceReport().total,
-				"up":         a.archiver.locator.instanceReport().up,
-				"identified": a.archiver.locator.instanceReport().identified,
+			"instanceSummary": gin.H{
+				"total":      ir.total,
+				"up":         ir.up,
+				"identified": ir.identified,
 			},
 		})
 	})
-	// FIXME(sneak) add more status routes here
 
 	return r
 }

archiver.go

@@ -2,11 +2,11 @@ package main
 
 import "time"
 
-type InstanceHostName string
+type InstanceHostname string
 
 type TootArchiver struct {
 	locator *InstanceLocator
-	instances map[InstanceHostName]*Instance
+	manager *InstanceManager
 	startup *time.Time
 }
 
@@ -19,15 +19,28 @@ func (a *TootArchiver) Uptime() time.Duration {
 	return time.Since(*a.startup)
 }
 
-func (a *TootArchiver) RunForever() int {
+func (a *TootArchiver) RunForever() {
 	t := time.Now()
 	a.startup = &t
+
+	newInstanceHostnameNotifications := make(chan InstanceHostname)
+
 	a.locator = NewInstanceLocator()
+
+	a.manager = NewInstanceManager()
+
+	a.locator.AddInstanceNotificationChannel(newInstanceHostnameNotifications)
+	a.manager.AddInstanceNotificationChannel(newInstanceHostnameNotifications)
+
+	// locator goroutine:
 	go a.locator.Locate()
 
+	// manager goroutine:
+	go a.manager.Manage()
+
+	// this goroutine (main) does nothing until we handle signals
+	// FIXME(sneak)
 	for {
 		time.Sleep(1 * time.Second)
 	}
-
-	return 0
 }

instance.go

@@ -43,6 +43,7 @@ type Instance struct {
 	hostName      string
 	identified    bool
 	impl          InstanceImplementation
+	backend       *InstanceBackend
 	status        InstanceStatus
 	nextCheck     *time.Time
 	nodeInfoUrl   string
@@ -264,6 +265,7 @@ func (i *Instance) fetchNodeInfo() {
 	return
 }
 
+/*
 func (i *Instance) fetchRecentToots() ([]byte, error) {
 	i.Lock()
 	impl := i.impl
@@ -277,13 +279,16 @@ func (i *Instance) fetchRecentToots() ([]byte, error) {
 		panic("unimplemented")
 	}
 }
+*/
 
-func (i *Instance) fetchRecentTootsJsonFromPleroma() ([]byte, error) {
+/*
+func (self *PleromaBackend) fetchRecentToots() ([]byte, error) {
 	//url := fmt.Sprintf("https://%s/api/statuses/public_and_external_timeline.json?count=100", i.hostName)
 	return nil, nil
 }
 
-func (i *Instance) fetchRecentTootsJsonFromMastodon() ([]byte, error) {
+func (self *MastodonBackend) fetchRecentTootsJsonFromMastodon() ([]byte, error) {
 	//url := fmt.Sprintf("https://%s/api/v1/timelines/public?limit=40&local=true", i.hostName)
 	return nil, nil
 }
+*/

instancelocator.go

@@ -4,8 +4,8 @@ import "encoding/json"
 import "fmt"
 import "io/ioutil"
 import "net/http"
-import "sync"
 import "time"
+import "sync"
 
 import "github.com/rs/zerolog/log"
 
@@ -17,12 +17,15 @@ var INDEX_CHECK_INTERVAL = time.Second * 60 * 60
 // check with indices after 10 mins if they failed
 var INDEX_ERROR_INTERVAL = time.Second * 60 * 10
 
+var LOG_REPORT_INTERVAL = time.Second * 60
+
 const mastodonIndexUrl = "https://instances.social/list.json?q%5Busers%5D=&q%5Bsearch%5D=&strict=false"
 const pleromaIndexUrl = "https://distsn.org/cgi-bin/distsn-pleroma-instances-api.cgi"
 
 type InstanceLocator struct {
 	pleromaIndexNextRefresh  *time.Time
 	mastodonIndexNextRefresh *time.Time
+	reportInstanceVia        chan InstanceHostname
 	instances                map[string]*Instance
 	sync.Mutex
 }
@@ -36,44 +39,49 @@ func NewInstanceLocator() *InstanceLocator {
 	return i
 }
 
-func (i *InstanceLocator) addInstance(hostname string) {
-	i.Lock()
-	defer i.Unlock()
+func (self *InstanceLocator) AddInstanceNotificationChannel(via chan InstanceHostname) {
+	self.Lock()
+	defer self.Unlock()
+	self.reportInstanceVia = via
+}
+
+func (self *InstanceLocator) addInstance(hostname string) {
+	self.Lock()
+	defer self.Unlock()
 	// only add it if we haven't seen the hostname before
-	if i.instances[hostname] == nil {
+	if self.instances[hostname] == nil {
 		log.Info().Str("hostname", hostname).Msgf("adding discovered instance")
-		i.instances[hostname] = NewInstance(hostname)
+		self.instances[hostname] = NewInstance(hostname)
 	}
 
 }
 
-func (i *InstanceLocator) Locate() {
-	x := 0
+func (self *InstanceLocator) Locate() {
+	x := time.Now()
 	for {
-		if i.pleromaIndexNextRefresh.Before(time.Now()) {
-			i.locatePleroma()
+		if self.pleromaIndexNextRefresh.Before(time.Now()) {
+			self.locatePleroma()
 		}
-		if i.mastodonIndexNextRefresh.Before(time.Now()) {
-			i.locateMastodon()
+		if self.mastodonIndexNextRefresh.Before(time.Now()) {
+			self.locateMastodon()
 		}
 		time.Sleep(1 * time.Second)
-		x++
-		if x == 60 {
-			x = 0
+		if time.Now().After(x.Add(LOG_REPORT_INTERVAL)) {
+			x = time.Now()
 			log.Debug().
-				Str("nextmastodonupdate", i.mastodonIndexNextRefresh.Format(time.RFC3339)).
+				Str("nextMastodonIndexFetch", self.mastodonIndexNextRefresh.Format(time.RFC3339)).
 				Send()
 			log.Debug().
-				Str("nextpleromaupdate", i.pleromaIndexNextRefresh.Format(time.RFC3339)).
+				Str("nextPleromaIndexFetch", self.pleromaIndexNextRefresh.Format(time.RFC3339)).
 				Send()
-			i.logInstanceReport()
+			self.logInstanceReport()
 		}
 	}
 
 }
 
-func (i *InstanceLocator) logInstanceReport() {
-	r := i.instanceReport()
+func (self *InstanceLocator) logInstanceReport() {
+	r := self.instanceReport()
 	log.Info().
 		Uint("up", r.up).
 		Uint("total", r.total).
@@ -91,18 +99,18 @@ func (r *InstanceLocatorReport) String() string {
 	return fmt.Sprintf("up=%d identified=%d total=%d", r.up, r.identified, r.total)
 }
 
-func (i *InstanceLocator) NumInstances() uint {
-	return i.instanceReport().total
+func (self *InstanceLocator) NumInstances() uint {
+	return self.instanceReport().total
 }
 
-func (i *InstanceLocator) instanceReport() *InstanceLocatorReport {
-	i.Lock()
-	defer i.Unlock()
+func (self *InstanceLocator) instanceReport() *InstanceLocatorReport {
+	self.Lock()
+	defer self.Unlock()
 	r := new(InstanceLocatorReport)
 
-	r.total = uint(len(i.instances))
+	r.total = uint(len(self.instances))
 
-	for _, elem := range i.instances {
+	for _, elem := range self.instances {
 		if elem.identified == true {
 			r.identified = r.identified + 1
 		}
@@ -115,7 +123,7 @@ func (i *InstanceLocator) instanceReport() *InstanceLocatorReport {
 	return r
 }
 
-func (i *InstanceLocator) locateMastodon() {
+func (self *InstanceLocator) locateMastodon() {
 	var c = &http.Client{
 		Timeout: INDEX_API_TIMEOUT,
 	}
@@ -124,9 +132,9 @@ func (i *InstanceLocator) locateMastodon() {
 	if err != nil {
 		log.Error().Msgf("unable to fetch mastodon instance list: %s", err)
 		t := time.Now().Add(INDEX_ERROR_INTERVAL)
-		i.Lock()
-		i.mastodonIndexNextRefresh = &t
-		i.Unlock()
+		self.Lock()
+		self.mastodonIndexNextRefresh = &t
+		self.Unlock()
 		return
 	}
 
@@ -136,9 +144,9 @@ func (i *InstanceLocator) locateMastodon() {
 	if err != nil {
 		log.Error().Msgf("unable to fetch mastodon instance list: %s", err)
 		t := time.Now().Add(INDEX_ERROR_INTERVAL)
-		i.Lock()
-		i.mastodonIndexNextRefresh = &t
-		i.Unlock()
+		self.Lock()
+		self.mastodonIndexNextRefresh = &t
+		self.Unlock()
 		return
 	}
 
@@ -147,23 +155,23 @@ func (i *InstanceLocator) locateMastodon() {
 	if err != nil {
 		log.Error().Msgf("unable to parse mastodon instance list: %s", err)
 		t := time.Now().Add(INDEX_ERROR_INTERVAL)
-		i.Lock()
-		i.mastodonIndexNextRefresh = &t
-		i.Unlock()
+		self.Lock()
+		self.mastodonIndexNextRefresh = &t
+		self.Unlock()
 		return
 	}
 
 	for _, instance := range mi.Instances {
-		i.addInstance(instance.Name)
+		self.addInstance(instance.Name)
 	}
 
 	t := time.Now().Add(INDEX_CHECK_INTERVAL)
-	i.Lock()
-	i.mastodonIndexNextRefresh = &t
-	i.Unlock()
+	self.Lock()
+	self.mastodonIndexNextRefresh = &t
+	self.Unlock()
 }
 
-func (i *InstanceLocator) locatePleroma() {
+func (self *InstanceLocator) locatePleroma() {
 	var c = &http.Client{
 		Timeout: INDEX_API_TIMEOUT,
 	}
@@ -172,9 +180,9 @@ func (i *InstanceLocator) locatePleroma() {
 	if err != nil {
 		log.Error().Msgf("unable to fetch pleroma instance list: %s", err)
 		t := time.Now().Add(INDEX_ERROR_INTERVAL)
-		i.Lock()
-		i.pleromaIndexNextRefresh = &t
-		i.Unlock()
+		self.Lock()
+		self.pleromaIndexNextRefresh = &t
+		self.Unlock()
 		return
 	}
 
@@ -184,9 +192,9 @@ func (i *InstanceLocator) locatePleroma() {
 	if err != nil {
 		log.Error().Msgf("unable to fetch pleroma instance list: %s", err)
 		t := time.Now().Add(INDEX_ERROR_INTERVAL)
-		i.Lock()
-		i.pleromaIndexNextRefresh = &t
-		i.Unlock()
+		self.Lock()
+		self.pleromaIndexNextRefresh = &t
+		self.Unlock()
 		return
 	}
 
@@ -196,17 +204,17 @@ func (i *InstanceLocator) locatePleroma() {
 	if err != nil {
 		log.Warn().Msgf("unable to parse pleroma instance list: %s", err)
 		t := time.Now().Add(INDEX_ERROR_INTERVAL)
-		i.Lock()
-		i.pleromaIndexNextRefresh = &t
-		i.Unlock()
+		self.Lock()
+		self.pleromaIndexNextRefresh = &t
+		self.Unlock()
 		return
 	}
 
 	for _, instance := range *pi {
-		i.addInstance(instance.Domain)
+		self.addInstance(instance.Domain)
 	}
 	t := time.Now().Add(INDEX_CHECK_INTERVAL)
-	i.Lock()
-	i.pleromaIndexNextRefresh = &t
-	i.Unlock()
+	self.Lock()
+	self.pleromaIndexNextRefresh = &t
+	self.Unlock()
 }

instancemanager.go

@@ -0,0 +1,34 @@
+package main
+
+import "sync"
+import "time"
+
+//import "github.com/rs/zerolog/log"
+
+type InstanceBackend interface {
+	//FIXME
+}
+
+type InstanceManager struct {
+	sync.Mutex
+	instances                map[InstanceHostname]*Instance
+	newInstanceNotifications chan InstanceHostname
+}
+
+func NewInstanceManager() *InstanceManager {
+	i := new(InstanceManager)
+	return i
+}
+
+func (self *InstanceManager) AddInstanceNotificationChannel(via chan InstanceHostname) {
+	self.Lock()
+	defer self.Unlock()
+	self.newInstanceNotifications = via
+}
+
+func (self *InstanceManager) Manage() {
+	for {
+		// FIXME(sneak)
+		time.Sleep(1 * time.Second)
+	}
+}