SocketExternalResourceAnalyzer.java

/**
 * Copyright (c) 2009-2011 VMware, Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.springsource.insight.plugin.socket;

import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;

import com.springsource.insight.intercept.operation.Operation;
import com.springsource.insight.intercept.operation.OperationFields;
import com.springsource.insight.intercept.topology.AbstractExternalResourceAnalyzer;
import com.springsource.insight.intercept.topology.ExternalResourceDescriptor;
import com.springsource.insight.intercept.topology.ExternalResourceType;
import com.springsource.insight.intercept.topology.MD5NameGenerator;
import com.springsource.insight.intercept.trace.Frame;
import com.springsource.insight.intercept.trace.Trace;
import com.springsource.insight.util.ListUtil;

/**
 * Extracts {@link SocketDefinitions#CONNECT_ACTION} target addresses as
 * {@link ExternalResourceType#SERVER} {@link ExternalResourceDescriptor}-s
 */
public class SocketExternalResourceAnalyzer extends AbstractExternalResourceAnalyzer {
    private static final SocketExternalResourceAnalyzer INSTANCE = new SocketExternalResourceAnalyzer();

    private SocketExternalResourceAnalyzer() {
        super(SocketDefinitions.TYPE);
    }

    public static final SocketExternalResourceAnalyzer getInstance() {
        return INSTANCE;
    }

    public Collection<ExternalResourceDescriptor> locateExternalResourceName(Trace trace, Collection<Frame> framesList) {
        if (ListUtil.size(framesList) <= 0) {
            return Collections.emptyList();
        }

        Set<ExternalResourceDescriptor> resSet = new HashSet<ExternalResourceDescriptor>(framesList.size());
        for (Frame frame : framesList) {
            ExternalResourceDescriptor res = extractExternalResourceDescriptor(frame);
            if (res == null) {  // can happen if failed to parse the URI somehow
                continue;
            }

            if (!resSet.add(res))
                continue;   // debug breakpoint
        }

        return resSet;
    }

    ExternalResourceDescriptor extractExternalResourceDescriptor(Frame frame) {
        Operation op = (frame == null) ? null : frame.getOperation();
        String action = (op == null) ? null : op.get(SocketDefinitions.ACTION_ATTR, String.class);
        if (!SocketDefinitions.CONNECT_ACTION.equals(action)) {
            return null;
        }

        String addr = op.get(SocketDefinitions.ADDRESS_ATTR, String.class);
        int port = op.getInt(SocketDefinitions.PORT_ATTR, (-1));
        String uri = op.get(OperationFields.URI, String.class);
        ExternalResourceType type = (uri == null) ? ExternalResourceType.SERVER : ExternalResourceType.WEB_SERVER;
        String color = colorManager.getColor(op);

        return new ExternalResourceDescriptor(frame,
                MD5NameGenerator.getName(addr + ":" + port),
                op.getLabel(),
                type.name(),
                null,
                addr,
                port,
                color, false);
    }
}