RedisExternalResourceAnalyzer.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.redis;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;

import com.springsource.insight.intercept.operation.Operation;
import com.springsource.insight.intercept.operation.OperationType;
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;

/**
 *
 */
public class RedisExternalResourceAnalyzer extends AbstractExternalResourceAnalyzer {
    public static final OperationType TYPE = OperationType.valueOf("redis-client-method");
    private static final RedisExternalResourceAnalyzer INSTANCE = new RedisExternalResourceAnalyzer();

    private RedisExternalResourceAnalyzer() {
        super(TYPE);
    }

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

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

        List<ExternalResourceDescriptor> dbDescriptors = new ArrayList<ExternalResourceDescriptor>(dbFrames.size());
        for (Frame dbFrame : dbFrames) {
            Operation op = dbFrame.getOperation();
            String host = op.get("host", String.class);
            int port = op.getInt("port", (-1));
            String color = colorManager.getColor(op);
            String dbName = op.get("dbName", String.class);

            String redisHash = MD5NameGenerator.getName(dbName + host + port);

            dbDescriptors.add(new ExternalResourceDescriptor(dbFrame,
                    "redis:" + redisHash,
                    dbName,
                    ExternalResourceType.KVSTORE.name(),
                    "Redis",
                    host,
                    port,
                    color, false));
        }

        return dbDescriptors;
    }

}