io.gatling.http.client.body.form.FormUrlEncodedRequestBody.java Source code

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Here is the source code for io.gatling.http.client.body.form.FormUrlEncodedRequestBody.java

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/*
 * Copyright 2011-2018 GatlingCorp (https://gatling.io)
 *
 * 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 io.gatling.http.client.body.form;

import io.gatling.http.client.Param;
import io.gatling.http.client.body.RequestBody;
import io.gatling.http.client.body.RequestBodyBuilder;
import io.gatling.http.client.body.WritableContent;
import io.gatling.netty.util.ahc.StringBuilderPool;
import io.gatling.netty.util.ahc.Utf8UrlEncoder;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufAllocator;
import io.netty.buffer.ByteBufUtil;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.nio.charset.Charset;
import java.util.List;

import static java.nio.charset.StandardCharsets.UTF_8;

public class FormUrlEncodedRequestBody extends RequestBody<List<Param>> {

    public FormUrlEncodedRequestBody(List<Param> content, String contentType, Charset charset) {
        super(content, contentType, charset);
    }

    @Override
    public WritableContent build(boolean zeroCopy, ByteBufAllocator alloc) {

        StringBuilder sb = encode();

        ByteBuf bb = ByteBufUtil.writeAscii(alloc, sb);
        return new WritableContent(bb, bb.readableBytes());
    }

    private StringBuilder encode() {
        StringBuilder sb = StringBuilderPool.DEFAULT.get();

        for (Param param : content) {
            encodeAndAppendFormParam(sb, param.getName(), param.getValue(), charset);
        }
        sb.setLength(sb.length() - 1);
        return sb;
    }

    private static void encodeAndAppendFormParam(StringBuilder sb, String name, String value, Charset charset) {
        encodeAndAppendFormField(sb, name, charset);
        if (value != null) {
            sb.append('=');
            encodeAndAppendFormField(sb, value, charset);
        }
        sb.append('&');
    }

    private static void encodeAndAppendFormField(StringBuilder sb, String field, Charset charset) {
        if (charset.equals(UTF_8)) {
            Utf8UrlEncoder.encodeAndAppendFormElement(sb, field);
        } else {
            try {
                // TODO there's probably room for perf improvements
                sb.append(URLEncoder.encode(field, charset.name()));
            } catch (UnsupportedEncodingException e) {
                // can't happen, as Charset was already resolved
            }
        }
    }

    @Override
    public RequestBodyBuilder<List<Param>> newBuilder() {
        return new FormUrlEncodedRequestBodyBuilder(content);
    }

    @Override
    public byte[] getBytes() {
        return encode().toString().getBytes();
    }

    @Override
    public String toString() {
        return "FormUrlEncodedRequestBody{" + "content=" + content + ", contentType=" + contentType + ", charset="
                + charset + '}';
    }
}