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Implement support for plugin hard dependencies.

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Steve Anton 2013-04-10 13:54:57 -07:00 committed by md_5
parent 51be33dbd7
commit c8c1028bd9
2 changed files with 73 additions and 2 deletions
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5
api/src/main/java/net/md_5/bungee/api/plugin/PluginDescription.java
View File

@ -1,5 +1,6 @@
package net.md_5.bungee.api.plugin;
import java.util.Set;
import lombok.AllArgsConstructor;
import lombok.Data;
@ -27,6 +28,10 @@ public class PluginDescription
* Plugin author.
*/
private String author;
/**
* Plugin hard dependencies.
*/
private Set<String> depends;
public PluginDescription()
{

70
api/src/main/java/net/md_5/bungee/api/plugin/PluginManager.java
View File

@ -11,6 +11,7 @@ import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.Stack;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.logging.Level;
@ -136,21 +137,86 @@ public class PluginManager
*/
public void enablePlugins()
{
Map<Plugin, Boolean> pluginStatuses = new HashMap<>();
for ( Map.Entry<String, Plugin> entry : plugins.entrySet() )
{
Plugin plugin = entry.getValue();
if ( !this.enablePlugin( pluginStatuses, new Stack<Plugin>(), plugin ) )
{
ProxyServer.getInstance().getLogger().warning( "Failed to enable " + entry.getKey() );
}
}
}
private boolean enablePlugin(Map<Plugin, Boolean> pluginStatuses, Stack<Plugin> dependStack, Plugin plugin)
{
if ( pluginStatuses.containsKey(plugin) )
{
return pluginStatuses.get(plugin);
}
// success status
boolean status = true;
// try to load dependencies first
for ( String dependName : plugin.getDescription().getDepends() )
{
Plugin depend = this.plugins.get(dependName);
Boolean dependStatus = depend != null ? pluginStatuses.get(depend) : Boolean.FALSE;
if ( dependStatus == null ) {
if ( dependStack.contains(depend) )
{
StringBuilder dependencyGraph = new StringBuilder();
for ( Plugin element : dependStack )
{
dependencyGraph.append(element.getDescription().getName()).append(" -> ");
}
dependencyGraph.append(plugin.getDescription().getName()).append(" -> ").append(dependName);
ProxyServer.getInstance().getLogger().log( Level.WARNING, "Circular dependency detected: " + dependencyGraph );
status = false;
} else
{
dependStack.push( plugin );
dependStatus = this.enablePlugin( pluginStatuses, dependStack, depend );
dependStack.pop();
}
}
if ( dependStatus == Boolean.FALSE )
{
ProxyServer.getInstance().getLogger().log( Level.WARNING, "{0} (required by {1}) is unavailable", new Object[]
{
depend.getDescription().getName(), plugin.getDescription().getName()
} );
status = false;
}
if ( !status )
{
break;
}
}
// do actual loading
if ( status )
{
try
{
plugin.onEnable();
ProxyServer.getInstance().getLogger().log( Level.INFO, "Enabled plugin {0} version {1} by {2}", new Object[]
{
entry.getKey(), plugin.getDescription().getVersion(), plugin.getDescription().getAuthor()
plugin.getDescription().getName(), plugin.getDescription().getVersion(), plugin.getDescription().getAuthor()
} );
} catch ( Exception ex )
{
ProxyServer.getInstance().getLogger().log( Level.WARNING, "Exception encountered when loading plugin: " + entry.getKey(), ex );
ProxyServer.getInstance().getLogger().log( Level.WARNING, "Exception encountered when loading plugin: " + plugin.getDescription().getName(), ex );
status = false;
}
}
pluginStatuses.put( plugin, status );
return status;
}
/**