Rolling log file location (#1846)

* Rolling log file location

* Fix file name

app/server/src/main/resources/logback.xml

@@ -24,7 +24,16 @@
     </appender>
 
     <appender name="FILE" class="ch.qos.logback.core.FileAppender">
-        <file>${bitcoins.log.location}</file>
+        <file>${bitcoins.log.location}/bitcoin-s.log</file>
+        <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
+            <!-- hourly rollover -->
+            <fileNamePattern>${bitcoins.log.location}/logs/bitcoin-s-%d{yyyy-MM-dd_HH}.%i.log</fileNamePattern>
+
+            <!-- each file should be at most 100MB, keep 2 days of history, and at most 2GB in the archive -->
+            <maxFileSize>100MB</maxFileSize>
+            <maxHistory>48</maxHistory>
+            <totalSizeCap>2GB</totalSizeCap>
+        </rollingPolicy>
         <encoder>
             <pattern>%date{yyyy-MM-dd'T'HH:mm:ss,SSXXX} %level [%logger{0}] %msg%n</pattern>
         </encoder>

app/server/src/main/scala/org/bitcoins/server/Main.scala

@@ -76,8 +76,7 @@ object Main extends App with BitcoinSLogger {
       datadirPath.resolve(lastDirname)
     }
 
-    System.setProperty("bitcoins.log.location",
-                       datadir.resolve("bitcoin-s.log").toAbsolutePath.toString)
+    System.setProperty("bitcoins.log.location", datadir.toAbsolutePath.toString)
 
     implicit val system: ActorSystem = ActorSystem("bitcoin-s", baseConfig)
     implicit val ec: ExecutionContext = system.dispatcher

db-commons/src/main/scala/org/bitcoins/db/AppConfig.scala

@@ -161,8 +161,8 @@ abstract class AppConfig extends LoggerConfig with StartStopAsync[Unit] {
     baseDatadir.resolve(lastDirname)
   }
 
-  override val logFile: Path = {
-    val path = datadir.resolve("bitcoin-s.log")
+  override val logLocation: Path = {
+    val path = datadir
     // Set property for loggers
     System.setProperty("bitcoins.log.location", path.toAbsolutePath.toString)
     path