log hostcache stats

host-cache/src/main/groovy/com/muwire/hostcache/HostCache.groovy

@@ -64,6 +64,9 @@ public class HostCache {
 		Timer timer = new Timer("timer", true)
 		timer.schedule({hostPool.age()} as TimerTask, 1000,1000)
 		timer.schedule({crawler.startCrawl()} as TimerTask, 10000, 10000)
+        File verified = new File("verified.json")
+        File unverified = new File("unverified.json")
+        timer.schedule({hostPool.serialize(verified, unverified)} as TimerTask, 10000, 60 * 60 * 1000)
 		
         session.addMuxedSessionListener(new Listener(hostPool: hostPool, toReturn: 2, crawler: crawler), 
             I2PSession.PROTO_DATAGRAM, I2PSession.PORT_ANY)

host-cache/src/main/groovy/com/muwire/hostcache/HostPool.groovy

@@ -2,6 +2,8 @@ package com.muwire.hostcache
 
 import java.util.stream.Collectors
 
+import groovy.json.JsonOutput
+
 class HostPool {
     
     final def maxFailures
@@ -74,4 +76,25 @@ class HostPool {
             }
         }
     }
+    
+    synchronized void serialize(File verifiedFile, File unverifiedFile) {
+        write(verifiedFile, verified.values())
+        write(unverifiedFile, unverified.values())
+    }
+    
+    private void write(File target, Collection hosts) {
+        JsonOutput jsonOutput = new JsonOutput()
+        target.withPrintWriter { writer ->
+            hosts.each { 
+                def json = [:]
+                json.destination = it.destination.toBase64()
+                json.verifyTime = it.verifyTime
+                json.leafSlots = it.leafSlots
+                json.peerSlots = it.peerSlots
+                json.verificationFailures = it.verificationFailures
+                def str = jsonOutput.toJson(json)
+                writer.println(str)
+            } 
+        }
+    }
 }