213 lines
6.0 KiB
C#
213 lines
6.0 KiB
C#
using System;
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using System.IO;
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using System.Collections.Generic;
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using System.Threading.Tasks;
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using System.Diagnostics;
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using System.Linq;
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using Nibriboard.Utilities;
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namespace Nibriboard.RippleSpace
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{
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public class RippleSpaceManager
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{
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/// <summary>
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/// The temporary directory in which we are strong out data.
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/// </summary>
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public string SourceDirectory { get; set; }
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/// <summary>
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/// The master list of planes that this PlaneManager is in charge of.
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/// </summary>
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public List<Plane> Planes = new List<Plane>();
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/// <summary>
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/// The number of milliseconds between each maintenance run.
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/// </summary>
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public readonly int MaintenanceInternal = 5000;
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/// <summary>
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/// The number of milliseconds the last maintenance run took.
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/// </summary>
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public long LastMaintenanceDuration = 0;
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public int DefaultChunkSize { get; set; } = 512;
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/// <summary>
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/// The size of the last save, in bytes.
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/// Returns 0 if this RippleSpace hasn't been saved yet.
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/// </summary>
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/// <value>The last size of the save file.</value>
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public long LastSaveSize {
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get {
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if(!Directory.Exists(SourceDirectory))
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return 0;
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return (new DirectoryInfo(SourceDirectory))
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.GetFiles("*", SearchOption.AllDirectories)
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.Sum(file => file.Length);
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}
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}
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public RippleSpaceManager(string inSourceDirectory)
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{
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SourceDirectory = inSourceDirectory;
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// Make sure that the source directory exists
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if (!Directory.Exists(SourceDirectory)) {
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Directory.CreateDirectory(SourceDirectory);
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Log.WriteLine("[RippleSpace] New blank ripplespace initialised.");
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}
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}
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/// <summary>
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/// Gets the plane with the specified name from this RippleSpace.
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/// </summary>
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/// <param name="planeName">The plane name to retrieve.</param>
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public Plane this[string planeName] {
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get {
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return GetById(planeName);
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}
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}
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/// <summary>
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/// Gets the plane with the specified name from this RippleSpace.
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/// </summary>
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/// <param name="targetName">The plane name to retrieve.</param>
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/// <returns>The plane wwith the specified name.</returns>
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protected Plane GetById(string targetName)
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{
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foreach (Plane plane in Planes)
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{
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if (plane.Name == targetName)
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return plane;
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}
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return null;
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}
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/// <summary>
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/// Creates a new plane, adds it to this RippleSpaceManager, and then returns it.
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/// </summary>
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/// <param name="newPlaneInfo">The settings for the new plane to create.</param>
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/// <returns>The newly created plane.</returns>
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public Plane CreatePlane(PlaneInfo newPlaneInfo)
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{
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if(this[newPlaneInfo.Name] != null)
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throw new InvalidOperationException($"Error: A plane with the name '{newPlaneInfo.Name}' already exists in this RippleSpaceManager.");
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Log.WriteLine("[RippleSpace] Creating plane {0}", newPlaneInfo.Name);
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Plane newPlane = new Plane(
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newPlaneInfo,
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CalcPaths.PlaneDirectory(SourceDirectory, newPlaneInfo.Name)
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);
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Planes.Add(newPlane);
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return newPlane;
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}
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public Plane GetByName(string targetPlaneName)
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{
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foreach(Plane plane in Planes) {
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if(plane.Name == targetPlaneName)
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return plane;
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}
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return null;
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}
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public async Task StartMaintenanceMonkey()
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{
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Log.WriteLine("[RippleSpace/Maintenance] Automated maintenance monkey created.");
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while (true)
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{
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Stopwatch maintenanceStopwatch = Stopwatch.StartNew();
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foreach (Plane plane in Planes)
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await plane.PerformMaintenance();
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LastMaintenanceDuration = maintenanceStopwatch.ElapsedMilliseconds;
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await Task.Delay(MaintenanceInternal);
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}
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}
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public async Task<long> Save()
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{
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Stopwatch timer = Stopwatch.StartNew();
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// Save the planes to disk
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List<Task<long>> planeSavers = new List<Task<long>>();
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StreamWriter indexWriter = new StreamWriter(Path.Combine(SourceDirectory, "index.list"));
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foreach(Plane currentPlane in Planes)
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{
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// Add the plane to the index
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await indexWriter.WriteLineAsync(currentPlane.Name);
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// Ask the plane to save to the directory
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planeSavers.Add(currentPlane.Save());
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}
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indexWriter.Close();
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await Task.WhenAll(planeSavers);
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long totalBytesWritten = planeSavers.Sum((Task<long> saver) => saver.Result);
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Log.WriteLine(
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"[Command/Save] Save complete - {0} written in {1}ms",
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Formatters.HumanSize(totalBytesWritten),
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timer.ElapsedMilliseconds
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);
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return totalBytesWritten;
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}
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public static async Task<RippleSpaceManager> FromDirectory(string sourceDirectory)
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{
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RippleSpaceManager rippleSpace = new RippleSpaceManager(sourceDirectory);
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if (!Directory.Exists(sourceDirectory)) {
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Log.WriteLine($"[Core] Creating new ripplespace in {sourceDirectory}.");
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return rippleSpace;
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}
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Log.WriteLine($"[Core] Loading ripplespace from {sourceDirectory}.");
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// Load the planes in
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if (!File.Exists(Path.Combine(rippleSpace.SourceDirectory, "index.list"))) {
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Log.WriteLine($"[Core] Warning: The ripplespace at {sourceDirectory} doesn't appear to contain an index file.");
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return rippleSpace;
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}
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Log.WriteLine("[Core] Importing planes");
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Stopwatch timer = Stopwatch.StartNew();
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StreamReader planeList = new StreamReader(Path.Combine(sourceDirectory, "index.list"));
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List<Task<Plane>> planeLoaders = new List<Task<Plane>>();
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string nextPlaneName = string.Empty;
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while ((nextPlaneName = await planeList.ReadLineAsync()) != null)
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{
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string nextPlaneDirectory = CalcPaths.PlaneDirectory(sourceDirectory, nextPlaneName);
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if (!Directory.Exists(nextPlaneDirectory)) {
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Log.WriteLine($"[Core] Warning: Couldn't find listed plane {nextPlaneName} when loading ripplespace.");
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continue;
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}
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planeLoaders.Add(Plane.FromDirectory(nextPlaneDirectory));
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}
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await Task.WhenAll(planeLoaders);
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rippleSpace.Planes.AddRange(
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planeLoaders.Select((Task<Plane> planeLoader) => planeLoader.Result)
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);
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long msTaken = timer.ElapsedMilliseconds;
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Log.WriteLine($"[Core] done! {rippleSpace.Planes.Count} plane{(rippleSpace.Planes.Count != 1?"s":"")} loaded in {msTaken}ms.");
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return rippleSpace;
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}
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}
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}
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