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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   *
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 * 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    *
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package org.apache.james.webadmin.data.jmap;

import java.util.Optional;

import spark.Request;

public class RunningOptionsParser {
    public static RunningOptions parse(Request request) {
        return intQueryParameter(request, "messagesPerSecond")
            .map(RunningOptions::withMessageRatePerSecond)
            .orElse(RunningOptions.DEFAULT);
    }

    public static Optional<Integer> intQueryParameter(Request request, String queryParameter) {
        try {
            return Optional.ofNullable(request.queryParams(queryParameter))
                .map(Integer::parseInt);
        } catch (NumberFormatException e) {
            throw new IllegalArgumentException(String.format("Illegal value supplied for query parameter '%s', expecting a " +
                "strictly positive optional integer", queryParameter), e);
        }
    }
}
