@@ -1,1 +1,2 @@ 
 cascade
+*.prof

@@ -4,3 +4,9 @@ 
     cascade is a cli-based fully
     masterless distributed computing
     thing
+
+              development
+	-----------------------
+
+    CASCADE_NAME=hewo CASCADE_BIND='127.0.0.1' go run .
+    CASCADE_NAME=hai CASCADE_BIND='127.0.0.2' CASCADE_JOIN='127.0.0.1' go run .

@@ -8,17 +8,10 @@ 
 	"github.com/hashicorp/serf/serf"
 )
 
-// Agent starts and manages a Serf & adds
-// service discovery
+// Agent starts and manages a Serf & adds service discovery (TODO)
 type Agent struct {
-//	conf     *Config
 	serfConf *serf.Config
 	eventCh  chan serf.Event
-
-	// i doubt we care about handling events,
-	// but i'm leaving this here just in case
-	//	eventHandlerList  []EventHandler
-	//	eventHandlersLock sync.Mutex
 
 	// This is the underlying Serf we are wrapping
 	serf *serf.Serf
@@ -53,7 +46,7 @@ case e := <-a.eventCh:
 			log.Printf("[INFO] cascade: Received event: %s", e.String())
 
 		case <-serfShutdownCh:
-			log.Printf("[WARN] cascade: Serf shutdown detected, quitting")
+			log.Printf("[INFO] cascade: serf shutdown detected, quitting eventloop")
 			a.Shutdown()
 			return
 

@@ -3,13 +3,20 @@ 
 import (
 	"fmt"
 	"net"
+	"os"
 )
 
 const DefaultBindPort int = 4449
 
 func DefaultConfig() *Config {
+	hostname, err := os.Hostname()
+	if err != nil {
+		panic(err)
+	}
+
 	return &Config{
 		BindAddr: "0.0.0.0",
+		NodeName: hostname,
 	}
 }
 

@@ -66,8 +66,7 @@ }
 
 	// Bail fast if not doing a graceful leave
 	if !graceful {
-		log.Printf("[WARN] cascade: non-graceful leave detected")
-		return nil
+		log.Fatal("[WARN] cascade: non-graceful leave detected")
 	}
 
 	// Attempt a graceful leave
@@ -129,31 +128,31 @@ bindIP, bindPort, err := config.AddrParts(config.BindAddr)
 	if err != nil {
 		log.Panic(err)
 	}
+
 	serfConfig := serf.DefaultConfig()
 	serfConfig.NodeName = config.NodeName
 	serfConfig.ProtocolVersion = uint8(serf.ProtocolVersionMax)
-	serfConfig.CoalescePeriod = 3 * time.Second
-	serfConfig.QuiescentPeriod = time.Second
-	serfConfig.QueryResponseSizeLimit = 1024
-	serfConfig.QuerySizeLimit = 1024
-	serfConfig.UserEventSizeLimit = 512
-	serfConfig.UserCoalescePeriod = 3 * time.Second
-	serfConfig.UserQuiescentPeriod = time.Second
-	// TODO: look at reconnect/tombstone settings w more scrutiny
-	serfConfig.ReconnectInterval = 0
-	serfConfig.ReconnectTimeout = 0
-	serfConfig.TombstoneTimeout = 0
-	serfConfig.BroadcastTimeout = 0
-	// TODO: what are the implications of true here o_O
-	serfConfig.EnableNameConflictResolution = true
-	// hardcode DefaultWANConfig because cascade is designed to be
-	// used as a single global system.
+	// TODO: how should cascade handle name conflicts?
+	//       defaulting to just blowing up for now, but
+	//       we _could_ take the tailscale route & append
+	//       -1 or whatever to the node. that would be more user friendly.
+	// TODO: some of these serf settings were pulled
+	// from consul[1]. re-examine them eventually.
+	serfConfig.EnableNameConflictResolution = false
+	serfConfig.ReconnectTimeout = 3 * 24 * time.Hour
+	serfConfig.QueueDepthWarning = 1000000
+	serfConfig.MinQueueDepth = 4096
+	serfConfig.LeavePropagateDelay = 3 * time.Second
+
 	serfConfig.MemberlistConfig = memberlist.DefaultWANConfig()
+	serfConfig.MemberlistConfig.DeadNodeReclaimTime = 30 * time.Second
 	serfConfig.MemberlistConfig.BindAddr = bindIP
 	serfConfig.MemberlistConfig.BindPort = bindPort
-	serfConfig.MemberlistConfig.AdvertiseAddr = ""
-	serfConfig.MemberlistConfig.AdvertisePort = 0
 
 	agent := Create(serfConfig)
 	return agent
 }
+
+// [1]: sources for consul serf tweaks
+//      https://github.com/hashicorp/consul/blob/v1.14.4/agent/consul/config.go
+//      https://github.com/hashicorp/consul/blob/v1.14.4/lib/serf/serf.go