/*

 * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package sun.tracing;

import java.lang.reflect.Method;

import java.io.PrintStream;

import java.util.HashMap;

import com.sun.tracing.ProviderFactory;

import com.sun.tracing.Provider;

import com.sun.tracing.ProviderName;

import com.sun.tracing.Probe;

import com.sun.tracing.ProbeName;

/**

 * Factory class to create tracing Providers.

 *

 * This factory will create tracing instances that print to a PrintStream

 * when activated.

 *

 * @since 1.7

 */

public class PrintStreamProviderFactory extends ProviderFactory {

    private PrintStream stream;

    public PrintStreamProviderFactory(PrintStream stream) {

        this.stream = stream;

    }

    public <T extends Provider> T createProvider(Class<T> cls) {

        PrintStreamProvider provider = new PrintStreamProvider(cls, stream);

        provider.init();

        return provider.newProxyInstance();

    }

}

class PrintStreamProvider extends ProviderSkeleton {

    private PrintStream stream;

    private String providerName;

    protected ProbeSkeleton createProbe(Method m) {

        String probeName = getAnnotationString(m, ProbeName.class, m.getName());

        return new PrintStreamProbe(this, probeName, m.getParameterTypes());

    }

    PrintStreamProvider(Class<? extends Provider> type, PrintStream stream) {

        super(type);

        this.stream = stream;

        this.providerName = getProviderName();

    }

    PrintStream getStream() {

        return stream;

    }

    String getName() {

        return providerName;

    }

}

class PrintStreamProbe extends ProbeSkeleton {

    private PrintStreamProvider provider;

    private String name;

    PrintStreamProbe(PrintStreamProvider p, String name, Class<?>[] params) {

        super(params);

        this.provider = p;

        this.name = name;

    }

    public boolean isEnabled() {

        return true;

    }

    public void uncheckedTrigger(Object[] args) {

        StringBuffer sb = new StringBuffer();

        sb.append(provider.getName());

        sb.append(".");

        sb.append(name);

        sb.append("(");

        boolean first = true;

        for (Object o : args) {

            if (first == false) {

                sb.append(",");

            } else {

                first = false;

            }

            sb.append(o.toString());

        }

        sb.append(")");

        provider.getStream().println(sb.toString());

    }

}