make download sequential ratio a property

core/src/main/groovy/com/muwire/core/Constants.groovy

@@ -9,7 +9,5 @@ class Constants {
     public static final int MAX_HEADER_SIZE = 0x1 << 14
     public static final int MAX_HEADERS = 16
     
-    public static final float DOWNLOAD_SEQUENTIAL_RATIO = 0.8f
-    
     public static final String SPLIT_PATTERN = "[\\+\\-,\\.:;\\(\\)=_/\\\\\\!\\\"\\\'\\\$%\\|]"
 }

core/src/main/groovy/com/muwire/core/Core.groovy

@@ -173,7 +173,7 @@ public class Core {
 		eventBus.register(SearchEvent.class, fileManager)
         
         log.info("initializing mesh manager")
-        MeshManager meshManager = new MeshManager(fileManager, home)
+        MeshManager meshManager = new MeshManager(fileManager, home, props)
         eventBus.register(SourceDiscoveredEvent.class, meshManager)
 		
 		log.info "initializing persistence service"

core/src/main/groovy/com/muwire/core/MuWireSettings.groovy

@@ -18,6 +18,7 @@ class MuWireSettings {
     CrawlerResponse crawlerResponse
     boolean shareDownloadedFiles
     Set<String> watchedDirectories
+    float downloadSequentialRatio
     
 	MuWireSettings() {
         this(new Properties())
@@ -33,6 +34,7 @@ class MuWireSettings {
         downloadRetryInterval = Integer.parseInt(props.getProperty("downloadRetryInterval","1"))
         updateCheckInterval = Integer.parseInt(props.getProperty("updateCheckInterval","24"))
         shareDownloadedFiles = Boolean.parseBoolean(props.getProperty("shareDownloadedFiles","true"))
+        downloadSequentialRatio = Float.valueOf(props.getProperty("downloadSequentialRatio","0.8"))
         
         watchedDirectories = new HashSet<>()
         if (props.containsKey("watchedDirectories")) {
@@ -52,6 +54,7 @@ class MuWireSettings {
         props.setProperty("downloadRetryInterval", String.valueOf(downloadRetryInterval))
         props.setProperty("updateCheckInterval", String.valueOf(updateCheckInterval))
         props.setProperty("shareDownloadedFiles", String.valueOf(shareDownloadedFiles))
+        props.setProperty("downloadSequentialRatio", String.valueOf(downloadSequentialRatio))
         
         if (!watchedDirectories.isEmpty()) {
             String encoded = watchedDirectories.stream().

core/src/main/groovy/com/muwire/core/mesh/MeshManager.groovy

@@ -4,6 +4,7 @@ import java.util.stream.Collectors
 
 import com.muwire.core.Constants
 import com.muwire.core.InfoHash
+import com.muwire.core.MuWireSettings
 import com.muwire.core.Persona
 import com.muwire.core.download.Pieces
 import com.muwire.core.download.SourceDiscoveredEvent
@@ -21,10 +22,12 @@ class MeshManager {
     private final Map<InfoHash, Mesh> meshes = Collections.synchronizedMap(new HashMap<>())
     private final FileManager fileManager
     private final File home
+    private final MuWireSettings settings
     
-    MeshManager(FileManager fileManager, File home) {
+    MeshManager(FileManager fileManager, File home, MuWireSettings settings) {
         this.fileManager = fileManager
         this.home = home
+        this.settings = settings
         load()
     }
     
@@ -36,7 +39,7 @@ class MeshManager {
         synchronized(meshes) {
             if (meshes.containsKey(infoHash))
                 return meshes.get(infoHash)
-            Pieces pieces = new Pieces(nPieces, Constants.DOWNLOAD_SEQUENTIAL_RATIO)
+            Pieces pieces = new Pieces(nPieces, settings.downloadSequentialRatio)
             if (fileManager.rootToFiles.containsKey(infoHash)) {
                 for (int i = 0; i < nPieces; i++)
                     pieces.markDownloaded(i)
@@ -83,7 +86,7 @@ class MeshManager {
             if (now - json.timestamp > EXPIRATION)
                 return
             InfoHash infoHash = new InfoHash(Base64.decode(json.infoHash))
-            Pieces pieces = new Pieces(json.nPieces, Constants.DOWNLOAD_SEQUENTIAL_RATIO)
+            Pieces pieces = new Pieces(json.nPieces, settings.downloadSequentialRatio)
             
             Mesh mesh = new Mesh(infoHash, pieces)
             json.sources.each { source ->