Example usage for java.lang LinkageError toString

Introduction

In this page you can find the example usage for java.lang LinkageError toString.

Prototype

public String toString() 

Source Link

Document

Returns a short description of this throwable.

Usage

From source file:org.hyperic.hq.agent.server.CommandDispatcher.java

/**
 * Dispatch a method after verifying that the version APIs
 * match up./* www . j a v a2 s  . c o  m*/
 *
 * @param cmd        Method to invoke
 * @param inStream   Stream which can read from the client
 * @param outStream  Stream which can write to the client
 *
 * @return the return value from the dispatched method
 * @throws AgentRemoteException indicating some error occurred dispatching
 *                              the method.
 */
public AgentRemoteValue processRequest(AgentCommand cmd, InputStream inStream, OutputStream outStream)
        throws AgentRemoteException {
    final long start = now();
    final String command = cmd.getCommand();
    boolean legalCommand = false;
    try {
        AgentServerHandler handler;
        AgentAPIInfo apiInfo;
        Object val;
        if ((val = commands.get(cmd.getCommand())) == null) {
            throw new AgentRemoteException("Unknown command, '" + cmd.getCommand() + "'");
        }
        handler = (AgentServerHandler) val;
        apiInfo = handler.getAPIInfo();
        if (!apiInfo.isCompatible(cmd.getCommandVersion())) {
            throw new AgentRemoteException(
                    "Client API mismatch: " + cmd.getCommandVersion() + " vs. " + apiInfo.getVersion());
        }
        legalCommand = true;
        if (log.isDebugEnabled()) {
            log.debug("processing cmd=" + cmd.getCommand() + ", arg=" + cmd.getCommandArg());
        }
        return handler.dispatchCommand(cmd.getCommand(), cmd.getCommandArg(), inStream, outStream);
    } catch (AgentRemoteException exc) {
        throw exc;
    } catch (Exception exc) {
        log.error("Error while processing request", exc);
        throw new AgentRemoteException(exc.toString(), exc);
    } catch (LinkageError err) {
        AgentRemoteException e = new AgentRemoteException(err.toString());
        e.initCause(err);
        throw e;
    } finally {
        long end = now();
        if (legalCommand) {
            statsCollector.addStat(end - start, COMMAND_DISPATCHER_INCOMING_COMMAND);
            statsCollector.addStat(end - start,
                    COMMAND_DISPATCHER_INCOMING_COMMAND + "_" + command.toUpperCase());
        } else {
            statsCollector.addStat(1, COMMAND_DISPATCHER_ILLEGAL_COMMAND);
        }
    }
}

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