com.spotify.apollo.meta.model.CallsInfo.java Source code

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Here is the source code for com.spotify.apollo.meta.model.CallsInfo.java

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/*
 * -\-\-
 * Spotify Apollo API Implementations
 * --
 * Copyright (C) 2013 - 2015 Spotify AB
 * --
 * 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.spotify.apollo.meta.model;

import com.google.common.collect.Lists;
import com.google.common.collect.Maps;

import java.util.List;
import java.util.concurrent.ConcurrentMap;

/**
* Tracks information about calls made to different endpoints.
*/
class CallsInfo implements MetaGatherer.CallsGatherer {
    private int sizeLimit;
    private Model.EndpointsInfo endpointsInfo = new Model.EndpointsInfo();
    private ConcurrentMap<String, EndpointInfoGatherer> endpoints = Maps.newConcurrentMap();

    public CallsInfo(int sizeLimit) {
        this.sizeLimit = sizeLimit;
    }

    Model.EndpointsInfo getEndpointsInfo() {
        endpointsInfo.endpoints = Lists.newArrayListWithCapacity(endpoints.size());
        for (EndpointInfoGatherer endpoint : endpoints.values()) {
            endpointsInfo.endpoints.add(endpoint.endpointInfo());
        }
        return endpointsInfo;
    }

    @Override
    public void setDocstring(String docstring) {
        this.endpointsInfo.docstring = docstring;
    }

    @Override
    public MetaGatherer.EndpointGatherer namedEndpointGatherer(String key) {
        if (!endpoints.containsKey(key)) {
            if (endpoints.size() < sizeLimit) {
                endpoints.putIfAbsent(key, new EndpointInfoGatherer(key, sizeLimit));
            } else {
                if (!endpoints.containsKey(DefaultMetaGatherer.OVER_SIZE_KEY)) {
                    endpoints.putIfAbsent(DefaultMetaGatherer.OVER_SIZE_KEY,
                            new EndpointInfoGatherer(DefaultMetaGatherer.OVER_SIZE_KEY, sizeLimit));
                }
                return endpoints.get(DefaultMetaGatherer.OVER_SIZE_KEY);
            }
        }
        return endpoints.get(key);
    }

    @Override
    public MetaGatherer.EndpointGatherer uriMethodsEndpointGatherer(String uri, List<String> methods) {
        StringBuilder key = new StringBuilder(uri);
        key.append('[');
        boolean first = true;
        for (String method : methods) {
            if (first) {
                first = false;
            } else {
                key.append(',');
            }
            key.append(method);
        }
        key.append(']');
        return namedEndpointGatherer(key.toString());
    }

    @Override
    public MetaGatherer.EndpointGatherer uriEndpointGatherer(String uri) {
        return namedEndpointGatherer(uri);
    }
}