mirror of
https://github.com/SquidDev-CC/CC-Tweaked
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932f8a44fc
- Move all HTTP tasks to a unified "MonitoredResource" model. This
provides a uniform way of tracking object's lifetimes and disposing
of them when complete.
- Rewrite HTTP requests to use Netty instead of standard Java. This
offers several advantages:
- We have access to more HTTP verbs (mostly PATCH).
- We can now do http -> https redirects.
- We no longer need to spawn in a new thread for each HTTP request.
While we do need to run some tasks off-thread in order to resolve
IPs, it's generally a much shorter task, and so is less likely to
inflate the thread pool.
- Introduce several limits for the http API:
- There's a limit on how many HTTP requests and websockets may exist
at the same time. If the limit is reached, additional ones will be
queued up until pending requests have finished.
- HTTP requests may upload a maximum of 4Mib and download a maximum
of 16Mib (configurable).
- .getResponseCode now returns the status text, as well as the status
code.
114 lines
3.3 KiB
Java
114 lines
3.3 KiB
Java
/*
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* This file is part of ComputerCraft - http://www.computercraft.info
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* Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
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* Send enquiries to dratcliffe@gmail.com
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*/
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package dan200.computercraft.shared.util;
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import dan200.computercraft.ComputerCraft;
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import java.io.*;
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import java.nio.charset.StandardCharsets;
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public class IDAssigner
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{
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private IDAssigner()
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{
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}
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public static int getNextIDFromDirectory( File dir )
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{
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return getNextID( dir, true );
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}
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public static int getNextIDFromFile( File file )
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{
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return getNextID( file, false );
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}
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private static int getNextID( File location, boolean directory )
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{
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// Determine where to locate ID file
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File lastidFile;
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if( directory )
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{
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location.mkdirs();
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lastidFile = new File( location, "lastid.txt" );
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}
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else
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{
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location.getParentFile().mkdirs();
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lastidFile = location;
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}
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// Try to determine the id
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int id = 0;
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if( !lastidFile.exists() )
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{
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// If an ID file doesn't exist, determine it from the file structure
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if( directory && location.exists() && location.isDirectory() )
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{
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String[] contents = location.list();
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for( String content : contents )
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{
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try
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{
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int number = Integer.parseInt( content );
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id = Math.max( number + 1, id );
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}
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catch( NumberFormatException e )
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{
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ComputerCraft.log.error( "Unexpected file '" + content + "' in '" + location.getAbsolutePath() + "'", e );
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}
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}
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}
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}
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else
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{
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// If an ID file does exist, parse the file to get the ID string
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String idString;
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try
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{
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FileInputStream in = new FileInputStream( lastidFile );
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InputStreamReader isr;
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isr = new InputStreamReader( in, StandardCharsets.UTF_8 );
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try( BufferedReader br = new BufferedReader( isr ) )
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{
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idString = br.readLine();
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}
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}
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catch( IOException e )
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{
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ComputerCraft.log.error( "Cannot open ID file '" + lastidFile + "'", e );
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return 0;
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}
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try
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{
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id = Integer.parseInt( idString ) + 1;
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}
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catch( NumberFormatException e )
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{
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ComputerCraft.log.error( "Cannot parse ID file '" + lastidFile + "', perhaps it is corrupt?", e );
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return 0;
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}
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}
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// Write the lastID file out with the new value
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try
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{
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BufferedWriter out = new BufferedWriter( new FileWriter( lastidFile, false ) );
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out.write( Integer.toString( id ) );
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out.newLine();
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out.close();
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}
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catch( IOException e )
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{
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ComputerCraft.log.error( "An error occured while trying to create the computer folder. Please check you have relevant permissions.", e );
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}
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return id;
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}
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}
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