org.jclouds.cloudwatch.binders.GetMetricStatisticsBinder.java Source code

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Here is the source code for org.jclouds.cloudwatch.binders.GetMetricStatisticsBinder.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.jclouds.cloudwatch.binders;

import static com.google.common.base.Preconditions.checkNotNull;

import javax.inject.Inject;

import org.jclouds.cloudwatch.domain.Dimension;
import org.jclouds.cloudwatch.domain.GetMetricStatistics;
import org.jclouds.cloudwatch.domain.Statistics;
import org.jclouds.date.DateService;
import org.jclouds.http.HttpRequest;

import com.google.common.annotations.Beta;
import com.google.common.collect.ImmutableMultimap;

/**
 * Binds the metrics request to the http request
 * 
 * @see <a href="http://docs.amazonwebservices.com/AmazonCloudWatch/latest/APIReference/API_GetMetricStatistics.html"
 *      />
 * 
 * @author Jeremy Whitlock, Adrian Cole
 */
@Beta
public class GetMetricStatisticsBinder implements org.jclouds.rest.Binder {

    private final DateService dateService;

    @Inject
    protected GetMetricStatisticsBinder(DateService dateService) {
        this.dateService = dateService;
    }

    @SuppressWarnings("unchecked")
    @Override
    public <R extends HttpRequest> R bindToRequest(R request, Object payload) {
        GetMetricStatistics getRequest = GetMetricStatistics.class
                .cast(checkNotNull(payload, "GetMetricStatistics must be set!"));
        int dimensionIndex = 1;
        int statisticIndex = 1;
        ImmutableMultimap.Builder<String, String> formParameters = ImmutableMultimap.builder();

        for (Dimension dimension : getRequest.getDimensions()) {
            formParameters.put("Dimensions.member." + dimensionIndex + ".Name", dimension.getName());
            formParameters.put("Dimensions.member." + dimensionIndex + ".Value", dimension.getValue());
            dimensionIndex++;
        }

        if (getRequest.getEndTime().isPresent()) {
            formParameters.put("EndTime", dateService.iso8601SecondsDateFormat(getRequest.getEndTime().get()));
        }
        formParameters.put("MetricName", getRequest.getMetricName());
        formParameters.put("Namespace", getRequest.getNamespace());
        formParameters.put("Period", Integer.toString(getRequest.getPeriod()));
        if (getRequest.getStartTime().isPresent()) {
            formParameters.put("StartTime", dateService.iso8601SecondsDateFormat(getRequest.getStartTime().get()));
        }

        for (Statistics statistic : getRequest.getStatistics()) {
            formParameters.put("Statistics.member." + statisticIndex, statistic.toString());
            statisticIndex++;
        }

        if (getRequest.getUnit().isPresent()) {
            formParameters.put("Unit", getRequest.getUnit().get().toString());
        }

        return (R) request.toBuilder().replaceFormParams(formParameters.build()).build();
    }

}