Mercurial > hg > release > thermostat-0.9
view launcher/src/main/java/com/redhat/thermostat/launcher/internal/CommandSource.java @ 1067:f0f0027e0724
Hide CommandInfo and reduce Command interface
Reviewed-by: vanaltj
Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2013-April/006349.html
author | Omair Majid <omajid@redhat.com> |
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date | Wed, 17 Apr 2013 14:34:38 -0400 |
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package com.redhat.thermostat.launcher.internal; import java.util.Arrays; import java.util.logging.Logger; import org.osgi.framework.BundleContext; import org.osgi.framework.Constants; import org.osgi.framework.InvalidSyntaxException; import org.osgi.framework.ServiceReference; import com.redhat.thermostat.common.cli.Command; import com.redhat.thermostat.common.cli.CommandRegistryImpl; import com.redhat.thermostat.common.utils.LoggingUtils; /** * Provides {@link Command} and {@link CommandInfo} objects for a given command * name. * * @see CommandRegistryImpl */ public class CommandSource { private static final Logger logger = LoggingUtils.getLogger(CommandSource.class); private final BundleContext context; public CommandSource(BundleContext context) { this.context = context; } public Command getCommand(String name) { try { ServiceReference[] refs = context.getAllServiceReferences(Command.class.getName(), "(" + Command.NAME + "=" + name + ")"); if (refs == null) { return null; } else if (refs.length > 1) { logger.warning("More than one matching command implementation found for " + name); for (int i = 0; i < refs.length; i++) { logger.warning(name + " is provided by + " + Arrays.toString((String[])refs[i].getProperty(Constants.OBJECTCLASS))); } } ServiceReference ref = refs[0]; return (Command) context.getService(ref); } catch (InvalidSyntaxException e) { throw new IllegalArgumentException("bad name for command: " + name, e); } } }